CN112951169B - Backlight control method and device of display module and display module - Google Patents
Backlight control method and device of display module and display module Download PDFInfo
- Publication number
- CN112951169B CN112951169B CN202110181231.7A CN202110181231A CN112951169B CN 112951169 B CN112951169 B CN 112951169B CN 202110181231 A CN202110181231 A CN 202110181231A CN 112951169 B CN112951169 B CN 112951169B
- Authority
- CN
- China
- Prior art keywords
- backlight
- target
- display
- partitions
- panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
- G09G3/3406—Control of illumination source
- G09G3/3413—Details of control of colour illumination sources
Abstract
The embodiment of the invention relates to a backlight control method and device of a display module and the display module, wherein the display module at least comprises the following components: the display device comprises a display panel, a backlight panel and a control unit, wherein the backlight panel comprises a plurality of backlight partitions, and each backlight partition corresponds to one backlight driving circuit; the method comprises the following steps: and under the condition that the display module is configured to start a screen saver mode, the control unit controls the display panel to display a preset screen saver image, and performs backlight control on one or more backlight partitions based on the screen saver image. Thus, energy saving in the screen saver mode can be achieved.
Description
Technical Field
The embodiment of the invention relates to the technical field of display control, in particular to a backlight control method and device of a display module and the display module.
Background
The display principle of CRT (Cathode Ray Tube) display is mainly that a filament heats a Cathode, the Cathode emits electrons, then under the action of an accelerating electric field, the electrons are focused into very thin electron beams by a focusing electrode, under the action of anode high voltage, huge energy is obtained to bombard a fluorescent powder layer at extremely high speed, so that a complete image is displayed on a display screen. Further, when the user stops operating the computer, the screen display will be fixed on the same picture, so that the electron beam will continuously bombard the same area of the phosphor layer, and the display screen will be aged, even the kinescope will be broken down, due to fatigue effect of the phosphor layer of the display screen.
Therefore, a screen protection mode is proposed in the prior art, and in the screen protection mode, a fixed area on the fluorescent powder layer is not bombarded for a long time by continuously changing picture display, so that the damage of a screen is avoided.
It follows that the screen saver mode is designed to protect the screen, and energy saving cannot be achieved in the screen saver mode.
Disclosure of Invention
In view of this, in order to achieve energy saving in the screen saver mode, embodiments of the present invention provide a backlight control method and apparatus for a display module, and a display module.
In a first aspect, an embodiment of the present invention provides a backlight control method of a display module, where the display module at least includes: the display device comprises a display panel, a backlight panel and a control unit, wherein the backlight panel comprises a plurality of backlight partitions, and each backlight partition corresponds to one backlight driving circuit; the method comprises the following steps:
and under the condition that the display module is configured to start a screen saver mode, the control unit controls the display panel to display a preset screen saver image, and performs backlight control on one or more backlight partitions based on the screen saver image.
In a second aspect, an embodiment of the present invention provides a backlight control apparatus for a display module, including:
the display control module is used for controlling the display panel to display a preset screen saver image under the condition that the display module is configured to start a screen saver mode;
and the backlight control module is used for carrying out backlight control on each backlight subarea based on the screen saver image under the condition that the display module is configured to start the screen saver mode.
In a third aspect, an embodiment of the present invention provides a display module, including: a display panel, a backlight panel, and a control unit;
the backlight panel comprises a plurality of backlight partitions, and each backlight partition corresponds to one backlight driving circuit;
the control unit is used for controlling the display panel to display a preset screen protection image under the condition that the display module is configured to start a screen protection mode, and carrying out backlight control on each backlight partition based on the screen protection image.
According to the technical scheme provided by the embodiment of the invention, under the condition that the display module is configured to start the screen protection mode, the backlight control is performed on one or more backlight subareas based on the screen protection image, so that the backlight control can be performed by taking the backlight subareas as granularity in the screen protection mode, the on-off states of different backlight subareas can be different, and the brightness levels can be different, and compared with the prior art, the whole backlight panel is in the on-state in the screen protection mode, and the brightness levels of all the backlight lamps are consistent, the energy can be effectively saved.
Drawings
Fig. 1 is a flowchart of an embodiment of a backlight control method of a display module according to an embodiment of the invention;
FIG. 2 is a top view of screen saver software according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a screen saver image according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a setting interface of screen saver according to an embodiment of the present invention;
FIG. 5 is an exemplary diagram of a display screen of a display panel in a screen saver mode according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a wallpaper selection interface according to an embodiment of the present invention;
FIG. 7 is a schematic diagram showing a backlight control effect of a plurality of backlight partitions in a backlight panel according to an embodiment of the present invention;
FIG. 8 is a schematic diagram showing a backlight control effect of a plurality of backlight partitions in another backlight panel according to an embodiment of the present invention;
fig. 9 is a schematic diagram of a display screen of a display panel according to an embodiment of the present invention;
fig. 10 is a block diagram of an embodiment of a backlight control device of a display module according to an embodiment of the invention;
fig. 11 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes the backlight control method of the display module according to the present invention with specific embodiments by referring to the accompanying drawings, and the embodiments do not limit the embodiments of the present invention.
Referring to fig. 1, a flowchart of an embodiment of a backlight control method of a display module according to an embodiment of the invention is provided, and as an embodiment, the display module at least includes: the display device comprises a display panel, a backlight panel and a control unit, wherein the backlight panel comprises a plurality of backlight partitions, each backlight partition comprises one or more backlight lamps, such as 4 backlight lamps, and the number of the backlight lamps in the backlight partitions is not limited in the embodiment of the invention. Furthermore, each backlight partition corresponds to a backlight driving circuit, so that each backlight partition can independently perform backlight control without mutual influence. As shown in fig. 1, the method comprises the steps of:
step 101, the control unit configures the display module to be in a screen saver mode.
As one embodiment, the control unit configures the display module to be in a screen saver mode in response to the received control operation. Specifically, a user may trigger screen saver software installed in a display module by double-click or right-click operation, and referring to fig. 2, a top page schematic diagram of the screen saver software is provided in an embodiment of the present invention. Based on the home page illustrated in fig. 2, a user may select a screen saver image, for example, select a screen saver image named "obsidian starry sky", and when detecting that the user selects any screen saver image, a schematic diagram of the screen saver image is displayed, see fig. 3, which is a schematic diagram of a screen saver image provided by an embodiment of the present invention. Based on the schematic diagram illustrated in fig. 3, the user may click on the "play" icon, and when the "play" icon is detected to be triggered, this means that a control operation for indicating to start the screen saver mode is detected, and the control unit configures the display module to start the screen saver mode in response to the received control operation.
It can be understood that the screen saver image is a dynamic image, so that the purpose of protecting the display screen can be achieved.
As another embodiment, the control unit configures the display module to turn on the screen saver mode in response to not receiving any control operation for a set period of time. Specifically, based on the schematic diagram illustrated in fig. 3, the user may click on the "set" icon, and when the "set" icon is detected to be triggered, the setting interface of the screen saver software illustrated in fig. 4 is further displayed. Based on the setup interface illustrated in fig. 4, the user may select a duration in a "time setup" input box, selectable options including, but not limited to: never, 5 minutes, 10 minutes, 30 minutes. Wherein when the user selects never, it means that the display module is never automatically configured to activate the screen saver mode, and when the user selects a specific time period, such as 10 minutes, it means that if no control operation is detected within 10 minutes, the display module is automatically configured to activate the screen saver mode. Therefore, the control unit can configure the display module to be in the screen protection starting mode in response to the fact that any control operation is not received within the set time length.
Referring to fig. 5, an example of a display screen of the display panel in the screen saver mode is shown.
Furthermore, based on the schematic illustrated in fig. 4, the user may click on the "dynamic wallpaper selection" icon, and when the "dynamic wallpaper selection" icon is detected to be triggered, the wallpaper selection interface illustrated in fig. 6 is further displayed. As shown in FIG. 6, the wallpaper selection interface presents a plurality of alternative dynamic wallpaper, one of which is selectable by the user as a screen saver image.
Step 202, the control unit controls the display panel to display a preset screen saver image, and performs backlight control on one or more backlight partitions based on the screen saver image.
First, the screen saver image is a dynamic image, and thus, the above-mentioned backlight control of one or more backlight partitions based on the screen saver image means: one or more backlight partitions are backlight controlled based on a screen saver picture currently displayed on the display panel.
In the embodiment of the invention, one or more backlight partitions (hereinafter referred to as target backlight partitions) can be determined among a plurality of backlight partitions on a backlight panel, and for each target backlight partition, a display area (hereinafter referred to as target display area) corresponding to the target backlight partition is determined in a display panel, and backlight control is performed on the target backlight partition based on a picture displayed in the target display area. It will be appreciated that the screen referred to herein is a portion of a screen saver screen and that the screen displayed in all display areas of the display panel constitutes a complete screen saver screen.
In the following description, first, a display area corresponding to a target backlight partition is determined in a display panel will be described:
as an embodiment, the display panel may be divided into a plurality of display areas according to an arrangement format of a plurality of backlight partitions in the backlight panel, where the number of the plurality of display areas is the same as that of the plurality of backlight partitions, which means that one display area corresponds to one backlight partition, and the relative positions of the display area and the corresponding backlight partition are the same, where the relative positions of the display areas refer to the positions of the display areas relative to the display panel, and the relative positions of the backlight partitions refer to the positions of the backlight partitions relative to the backlight panel. Based on this, a target display area corresponding to the target backlight panel may be determined among a plurality of display areas included in the display panel based on the positional information of the target backlight partition in the backlight panel.
For example, assuming that the backlight panel includes m×n backlight partitions, the display panel is also divided into m×n display areas, and assuming that the position information of the backlight partitions in the backlight panel is represented by the number of rows and the number of columns, and similarly, the position information of the display areas in the display panel is represented by the number of rows and the number of columns. Taking the backlight partition located in the 1 st row and the 100 st column in the target backlight panel as an example, the position information of the target backlight partition in the backlight panel may be denoted as (1, 100), and based on the position information, the display area located in the 1 st row and the 100 st column in the display panel may be determined as the target display area corresponding to the target backlight partition.
Next, in the above description, the backlight control of the target backlight section based on the screen displayed in the target display area will be described:
as one example, in a picture displayed in a target display area, an RGB value of each pixel is used to determine a characteristic value of the picture, a luminance level of a target backlight partition (hereinafter referred to as a target luminance level) is determined based on the characteristic value, and the target backlight partition is adjusted to the target luminance level. The characteristic value comprises one or more of the following: brightness value, contrast, saturation.
In this embodiment, taking a luminance value as an example, determining a feature value of a picture according to RGB values of each pixel point in the picture displayed in a target display area includes: for each pixel point in a picture displayed by a target display area, determining the brightness value of the pixel point according to RGB of the pixel point, then averaging the brightness values of all the pixel points, and determining the average value as the brightness value of the picture.
In this embodiment, as an optional implementation manner, determining, according to the feature value, a brightness level of a backlight partition corresponding to the display partition includes: searching a characteristic value from a preset backlight brightness adjustment table, wherein the backlight brightness adjustment table comprises a plurality of corresponding relations between characteristic value ranges and brightness levels, and determining the brightness level corresponding to the characteristic value range to which the characteristic value belongs as the target brightness level. The brightness level ranges from 0 to 128 stages.
As an alternative implementation, in an application, the luminance value is positively correlated with the luminance level, i.e. the higher the luminance value, the higher the corresponding luminance level, the lower the luminance value, the lower the corresponding luminance level. Through the processing, the backlight corresponding to the area with higher brightness in the picture is brighter, and the backlight corresponding to the area with lower brightness is darker, so that the visual experience of a user is improved.
Similarly, in an application, the contrast is positively correlated with the brightness level, i.e., the higher the contrast, the higher the corresponding brightness level, the lower the contrast, and the lower the corresponding brightness level. Through the processing, the backlight corresponding to the area with higher contrast in the picture is brighter, and the backlight corresponding to the area with lower contrast is darker, so that the visual experience of a user is improved.
Again similarly, in an application, saturation is positively correlated with the brightness level, i.e., the higher the saturation, the higher the corresponding brightness level, the lower the saturation, and the lower the corresponding brightness level. Through the processing, the backlight corresponding to the region with rich colors in the picture is brighter, so that the visual experience of a user is improved.
Finally, in the above description, determining one or more target backlight partitions from a plurality of backlight partitions on a backlight panel is described:
as one embodiment, each backlight partition is determined to be a target backlight partition.
In this embodiment, referring to fig. 7, a schematic view of the backlight control effect of a plurality of backlight partitions in a backlight panel is shown in combination with the screen saver image illustrated in fig. 3. As shown in fig. 7, among the plurality of backlight partitions of the backlight panel, only a small number of the backlight partitions are in the lit state, and the other backlight partitions are in the extinguished state. Thereby saving energy in the screen saver mode.
As another embodiment, N backlight partitions of the plurality of backlight partitions are determined as target backlight partitions, where N is a natural number greater than 0 and N is less than a total number of the plurality of backlight partitions in the backlight panel.
Further, in this embodiment, for each other backlight partition except for the target backlight partition among the plurality of backlight partitions included in the backlight panel, each other backlight partition is adjusted to the set brightness level.
As can be seen from this, in this embodiment, the local dimming method is adopted for the target division to perform backlight control, and the backlight control is uniformly performed for each of the other backlight divisions other than the target division.
For example, as shown in fig. 8, the backlight panel is divided into left and right two areas, and all backlight partitions in the left area are determined as target backlight partitions. In combination with the screen saver image illustrated in fig. 3, as shown in fig. 8, all the backlight partitions in the right area are in the lit state, while only a small number of the backlight partitions in the left area are in the lit state, and the others are in the extinguished state. Thereby saving energy in the screen saver mode.
Further, as shown in fig. 9, an example of a display screen of the display panel based on the backlight control effect shown in fig. 8 is shown. Based on the display screen illustrated in fig. 9, the user can visually and intuitively understand the energy saving effect achieved by the technical scheme provided by the embodiment of the invention compared with the prior art.
Further, in the application, as an embodiment, in the normal screen saver mode, each backlight partition is determined as the target backlight partition, and the display screen of the display panel may be as shown in fig. 5. Further, based on the display screen illustrated in fig. 5, when the "obsidian contrast mode" icon is detected to be triggered, N backlight partitions of the plurality of backlight partitions are determined as target backlight partitions according to a set manner, and the display screen of the display panel may be as illustrated in fig. 9. Further, the invention can also exit from the 'contrast mode' to the normal screen protection mode, and the invention is not limited to specific operation implementation.
According to the technical scheme provided by the embodiment of the invention, under the condition that the display module is configured to start the screen protection mode, the backlight control is performed on one or more backlight subareas based on the screen protection image, so that the backlight control can be performed by taking the backlight subareas as granularity in the screen protection mode, the on-off states of different backlight subareas can be different, and the brightness levels can be different, and compared with the prior art, the whole backlight panel is in the on-state in the screen protection mode, and the brightness levels of all the backlight lamps are consistent, the energy can be effectively saved.
The invention also provides an embodiment of a backlight control device of the display module, corresponding to the embodiment of the backlight control method of the display module.
Referring to fig. 10, a block diagram of an embodiment of a backlight control device of a display module according to an embodiment of the invention is provided. As shown in fig. 10, the apparatus includes: a display control module 1001 and a backlight control module 1002.
The display control module 1001 is configured to control the display panel to display a preset screen saver image when the display module is configured to start a screen saver mode;
and a backlight control module 1002, configured to perform backlight control on each backlight partition based on the screen saver image when the display module is configured to turn on a screen saver mode.
Optionally, the backlight control module 1002 includes (not shown in fig. 10):
a target backlight partition determination sub-module for determining one or more target backlight partitions among a plurality of the backlight partitions;
a target display area determining sub-module, configured to determine, for each of the target backlight partitions, a target display area corresponding to the target backlight partition in the display panel;
and the control sub-module is used for carrying out backlight control on the target backlight partition based on the image displayed in the target display area.
Optionally, the apparatus further comprises (not shown in fig. 10):
the display area dividing module is used for dividing the display panel into a plurality of display areas according to the arrangement format of the backlight partitions in the backlight panel, wherein the number of the display areas is the same as that of the backlight partitions;
the target display area determining submodule is specifically configured to:
the target display area is determined among the plurality of display areas based on positional information of the target backlight partition in the backlight panel.
Optionally, the control submodule includes: (not shown in fig. 10):
the characteristic value determining submodule is used for determining characteristic values of the picture according to RGB values of all pixel points in the picture displayed by the target display area;
a brightness level determining sub-module, configured to determine a target brightness level of the target backlight partition according to the feature value;
and the adjusting sub-module is used for adjusting the target backlight subarea to the target brightness level.
Optionally, the luminance level determination submodule is specifically configured to:
searching the characteristic values from a preset backlight brightness adjustment table, wherein the backlight brightness adjustment table comprises a plurality of corresponding relations between characteristic value ranges and brightness levels; and determining the brightness level corresponding to the characteristic value range to which the characteristic value belongs as the target brightness level.
Optionally, the characteristic value includes one or several of the following:
brightness value, contrast, saturation.
Optionally, the target backlight partition determination submodule is specifically configured to:
determining each of the backlight partitions as the target backlight partition; or alternatively, the process may be performed,
n backlight partitions of the plurality of backlight partitions are determined as the target backlight partition, the N being a natural number greater than 0 and the N being less than a total number of the plurality of backlight partitions.
Optionally, the apparatus further comprises (not shown in fig. 10):
and the brightness adjustment module is used for adjusting each other backlight subarea except the target backlight subarea to a set brightness level.
Optionally, the apparatus further comprises (not shown in fig. 10):
the mode starting module is used for responding to the received control operation and configuring the display module to start the screen protection mode; or alternatively, the process may be performed,
and responding to the condition that any control operation is not received within a set time length, and configuring the display module to start the screen protection mode.
The following describes a display module provided by an embodiment of the present invention with reference to a backlight control method of the display module illustrated in fig. 1:
referring to fig. 11, a schematic structural diagram of a display module according to an embodiment of the invention is provided.
As shown in fig. 11, the display module 110 includes: a display panel 111, a backlight panel 112, and a control unit 113.
Wherein the display panel 111 may include (not shown in fig. 11): display screens, touch sensors, touch controllers, registers, processors, drivers, etc.
The backlight panel 112 includes a plurality of backlight partitions, each including one or more backlight lamps, such as 4 backlight lamps, and the number of backlight lamps in the backlight partition is not limited in the embodiment of the present invention. Further, each backlight partition corresponds to a backlight driving circuit (not shown in fig. 11), so that each backlight partition can independently perform backlight control without affecting each other.
The control unit 113 may include: a signal processor 1131, a backlight control module 1132, and a display control module 1133.
As shown in fig. 11, the output end of the signal processor 1131 is respectively connected with the backlight control module 1132 and the display control module 1133. Based on this, in the embodiment of the present invention, when the image signal is transmitted to the control unit 113, the signal processor 1131 first analyzes the image signal, and then sends a backlight control instruction to the backlight control module 1132 according to the analysis result, where the backlight control instruction may carry the target brightness level corresponding to each backlight partition, so that the backlight control module 1133 performs backlight control on each backlight partition in response to the received backlight control instruction; meanwhile, the signal processor 1131 forwards the image signal to the display control module 1133, so that the display control module 1133 controls the display panel 111 to display the screen saver image in response to the image signal. The signal processor 1131 may be a chip, an FPGA (Field-Programmable Gate Array, field programmable gate array), or the like, which is not limited in this regard by the present invention.
Specifically, the control unit 113 controls the display panel 111 to display a preset screen saver image and performs backlight control on one or more backlight partitions based on the screen saver image in a case where the display module 110 is configured to turn on the screen saver mode.
Optionally, the control unit 113 determines one or more target backlight partitions among the plurality of backlight partitions; for each target backlight partition, determining a target display area corresponding to the target backlight partition in the display panel 111; and performing backlight control on the target backlight partition based on the picture displayed in the target display area.
Optionally, the control unit 113 divides the display panel 111 into a plurality of display areas according to an arrangement format of a plurality of backlight partitions in the backlight panel 112, the plurality of display areas being the same as the plurality of backlight partitions;
the target display area is determined among the plurality of display areas based on the positional information of the target backlight partition in the backlight panel 112.
Optionally, the control unit 113 determines a feature value of the picture according to RGB values of each pixel point in the picture displayed in the target display area; determining a target brightness level of the target backlight partition according to the characteristic value; the target backlight partition is adjusted to a target brightness level.
Optionally, the control unit 113 searches for a feature value from a preset backlight brightness adjustment table, where the backlight brightness adjustment table includes a plurality of correspondence between a feature value range and a brightness level; and determining the brightness level corresponding to the characteristic value range to which the characteristic value belongs as a target brightness level.
Optionally, the control unit 113 determines each backlight partition as a target backlight partition; alternatively, N backlight partitions of the plurality of backlight partitions are determined as target backlight partitions, N being a natural number greater than 0 and N being less than a total number of the plurality of backlight partitions.
Alternatively, the control unit 113 adjusts each of the other backlight partitions other than the target backlight partition to the set brightness level in the case where N backlight partitions among the plurality of the backlight partitions are determined as the target backlight partition.
Optionally, the control unit 113 configures the display module 110 to open a screen saver mode in response to the received control operation; or, in response to not receiving any control operation within a set period of time, the display module 110 is configured to turn on the screen saver mode.
The embodiment of the invention also provides a storage medium (computer readable storage medium). The storage medium here stores one or more programs. Wherein the storage medium may comprise volatile memory, such as random access memory; the memory may also include non-volatile memory, such as read-only memory, flash memory, hard disk, or solid state disk; the memory may also comprise a combination of the above types of memories.
When one or more programs in the storage medium are executable by one or more processors, the backlight control method of the display module is implemented.
The processor is used for executing a backlight control program of the display module stored in the memory so as to realize the following steps of the backlight control method of the display module:
and under the condition that the display module is configured to start a screen saver mode, the control unit controls the display panel to display a preset screen saver image, and performs backlight control on one or more backlight partitions based on the screen saver image.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of function in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, in a software module executed by a processor, or in a combination of the two. The software modules may be disposed in Random Access Memory (RAM), memory, read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (14)
1. The backlight control method of the display module is characterized in that the display module at least comprises the following steps: a display panel, a backlight panel and a control unit, wherein the backlight panel comprises a plurality of backlight partitions; the method comprises the following steps:
in the case that the display module is configured to start a screen saver mode, the control unit controls the display panel to display a preset screen saver image, and performs backlight control on one or more backlight partitions based on the screen saver image; the performing backlight control on one or more of the backlight partitions based on the screen saver image includes: determining one or more target backlight partitions among a plurality of the backlight partitions; wherein N backlight partitions of the plurality of backlight partitions are determined as the target backlight partition, the N being a natural number greater than 0 and the N being less than a total number of the plurality of backlight partitions; the backlight panel is divided into a left area and a right area, all backlight partitions in the left area are determined to be target backlight partitions, all the backlight partitions in the right area are in a lighting state, and only a small number of the backlight partitions in the left area are in a lighting state, and the other backlight partitions are in a extinguishing state;
for each target backlight partition, determining a target display area corresponding to the target backlight partition in the display panel; performing backlight control on the target backlight partition based on the image displayed in the target display area;
and adjusting each other backlight subarea except the target backlight subarea to a set brightness level.
2. The method according to claim 1, wherein the method further comprises:
dividing the display panel into a plurality of display areas according to the arrangement format of the backlight partitions in the backlight panel, wherein the display areas are the same as the backlight partitions in number;
the determining, in the display panel, a target display area corresponding to the target backlight partition includes:
the target display area is determined among the plurality of display areas based on positional information of the target backlight partition in the backlight panel.
3. The method of claim 1, wherein the backlighting the target backlight partition based on the displayed image in the target display area comprises:
determining the characteristic value of the picture according to the RGB value of each pixel point in the picture displayed by the target display area;
determining a target brightness level of the target backlight partition according to the characteristic value;
and adjusting the target backlight subarea to the target brightness level.
4. The method of claim 3, wherein said determining a target brightness level for the target backlight partition based on the characteristic value comprises:
searching the characteristic values from a preset backlight brightness adjustment table, wherein the backlight brightness adjustment table comprises a plurality of corresponding relations between characteristic value ranges and brightness levels;
and determining the brightness level corresponding to the characteristic value range to which the characteristic value belongs as the target brightness level.
5. A method according to claim 3, wherein the characteristic values comprise one or more of the following:
brightness value, contrast, saturation.
6. The method of claim 1, wherein said determining one or more target backlight partitions among a plurality of said backlight partitions further comprises:
each of the backlight partitions is determined to be the target backlight partition.
7. The method according to claim 1, wherein the method further comprises:
the control unit responds to the received control operation and configures the display module to start the screen protection mode; or alternatively, the process may be performed,
and responding to the condition that any control operation is not received within a set time length, and configuring the display module to start the screen protection mode.
8. The utility model provides a display module assembly's backlight control device which characterized in that, display module assembly includes at least: a display panel, a backlight panel, the backlight panel comprising a plurality of backlight partitions; the device comprises:
the display control module is used for controlling the display panel to display a preset screen saver image under the condition that the display module is configured to start a screen saver mode;
a backlight control module, configured to perform backlight control on each of the backlight partitions based on the screen saver image when the display module is configured to turn on a screen saver mode; the performing backlight control on each backlight partition based on the screen saver image includes: determining one or more target backlight partitions among a plurality of the backlight partitions; wherein N backlight partitions of the plurality of backlight partitions are determined as the target backlight partition, the N being a natural number greater than 0 and the N being less than a total number of the plurality of backlight partitions; the backlight panel is divided into a left area and a right area, all backlight partitions in the left area are determined to be target backlight partitions, all the backlight partitions in the right area are in a lighting state, and only a small number of the backlight partitions in the left area are in a lighting state, and the other backlight partitions are in a extinguishing state;
for each target backlight partition, determining a target display area corresponding to the target backlight partition in the display panel; performing backlight control on the target backlight partition based on the image displayed in the target display area;
the backlight control module is further configured to adjust each of the plurality of backlight partitions, except for the target backlight partition, to a set brightness level.
9. A display module, comprising: a display panel, a backlight panel, and a control unit;
the backlight panel comprises a plurality of backlight partitions, and each backlight partition corresponds to one backlight driving circuit;
the control unit is used for controlling the display panel to display a preset screen saver image and controlling one or more backlight partitions to backlight based on the screen saver image under the condition that the display module is configured to start a screen saver mode; the performing backlight control on one or more of the backlight partitions based on the screen saver image includes: determining one or more target backlight partitions among a plurality of the backlight partitions; wherein N backlight partitions of the plurality of backlight partitions are determined as the target backlight partition, the N being a natural number greater than 0 and the N being less than a total number of the plurality of backlight partitions; the backlight panel is divided into a left area and a right area, all backlight partitions in the left area are determined to be target backlight partitions, all the backlight partitions in the right area are in a lighting state, and only a small number of the backlight partitions in the left area are in a lighting state, and the other backlight partitions are in a extinguishing state;
for each target backlight partition, determining a target display area corresponding to the target backlight partition in the display panel; performing backlight control on the target backlight partition based on the image displayed in the target display area;
and adjusting each other backlight subarea except the target backlight subarea to a set brightness level.
10. The display module assembly of claim 9, wherein the display module assembly comprises,
the control unit divides the display panel into a plurality of display areas according to the arrangement format of a plurality of backlight partitions in the backlight panel, wherein the number of the display areas is the same as that of the backlight partitions;
the target display area is determined among the plurality of display areas based on positional information of the target backlight partition in the backlight panel.
11. The display module assembly of claim 9, wherein the display module assembly comprises,
the control unit determines the characteristic value of the picture according to the RGB value of each pixel point in the picture displayed by the target display area;
determining a target brightness level of the target backlight partition according to the characteristic value;
and adjusting the target backlight subarea to the target brightness level.
12. The display module assembly of claim 11, wherein the display module assembly comprises,
the control unit searches the characteristic value from a preset backlight brightness adjustment table, and the backlight brightness adjustment table comprises a plurality of corresponding relations between characteristic value ranges and brightness levels;
and determining the brightness level corresponding to the characteristic value range to which the characteristic value belongs as the target brightness level.
13. The display module assembly of claim 9, wherein the display module assembly comprises,
the control unit determines each of the backlight partitions as the target backlight partition.
14. The display module assembly of claim 9, wherein the display module assembly comprises,
the control unit responds to the received control operation and configures the display module to start the screen protection mode; or alternatively, the process may be performed,
and responding to the condition that any control operation is not received within a set time length, and configuring the display module to start the screen protection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181231.7A CN112951169B (en) | 2021-02-08 | 2021-02-08 | Backlight control method and device of display module and display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181231.7A CN112951169B (en) | 2021-02-08 | 2021-02-08 | Backlight control method and device of display module and display module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112951169A CN112951169A (en) | 2021-06-11 |
| CN112951169B true CN112951169B (en) | 2023-08-15 |
Family
ID=76245121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110181231.7A Active CN112951169B (en) | 2021-02-08 | 2021-02-08 | Backlight control method and device of display module and display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112951169B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114530128B (en) * | 2022-03-11 | 2024-02-06 | 武汉华星光电技术有限公司 | Backlight driving system and display terminal |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002351420A (en) * | 2001-05-25 | 2002-12-06 | Nec Mitsubishi Denki Visual Systems Kk | Display device |
| JP2003271107A (en) * | 2002-03-14 | 2003-09-25 | Nec Mitsubishi Denki Visual Systems Kk | Display controller, display device, computer system, and program for performing display control |
| CN1601443A (en) * | 2003-09-25 | 2005-03-30 | 株式会社东芝 | Information processing apparatus and power saving control method |
| CN101686590A (en) * | 2008-09-27 | 2010-03-31 | 比亚迪股份有限公司 | Led dynamic backlight source control algorithm |
| CN103377624A (en) * | 2012-04-17 | 2013-10-30 | 宇龙计算机通信科技(深圳)有限公司 | Method and apparatus for adjusting luminance |
| JP2014044292A (en) * | 2012-08-27 | 2014-03-13 | Canon Inc | Display device and method for controlling the same |
| CN105979097A (en) * | 2016-06-29 | 2016-09-28 | 努比亚技术有限公司 | Mobile terminal and method for adjusting backlight brightness of display screen of mobile terminal |
| CN110164385A (en) * | 2019-05-31 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of adjusting method of back light source brightness |
| CN111599320A (en) * | 2020-06-22 | 2020-08-28 | 京东方科技集团股份有限公司 | Backlight adjusting method and device of display device and display device |
-
2021
- 2021-02-08 CN CN202110181231.7A patent/CN112951169B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002351420A (en) * | 2001-05-25 | 2002-12-06 | Nec Mitsubishi Denki Visual Systems Kk | Display device |
| JP2003271107A (en) * | 2002-03-14 | 2003-09-25 | Nec Mitsubishi Denki Visual Systems Kk | Display controller, display device, computer system, and program for performing display control |
| CN1601443A (en) * | 2003-09-25 | 2005-03-30 | 株式会社东芝 | Information processing apparatus and power saving control method |
| CN101686590A (en) * | 2008-09-27 | 2010-03-31 | 比亚迪股份有限公司 | Led dynamic backlight source control algorithm |
| CN103377624A (en) * | 2012-04-17 | 2013-10-30 | 宇龙计算机通信科技(深圳)有限公司 | Method and apparatus for adjusting luminance |
| JP2014044292A (en) * | 2012-08-27 | 2014-03-13 | Canon Inc | Display device and method for controlling the same |
| CN105979097A (en) * | 2016-06-29 | 2016-09-28 | 努比亚技术有限公司 | Mobile terminal and method for adjusting backlight brightness of display screen of mobile terminal |
| CN110164385A (en) * | 2019-05-31 | 2019-08-23 | 厦门天马微电子有限公司 | A kind of adjusting method of back light source brightness |
| CN111599320A (en) * | 2020-06-22 | 2020-08-28 | 京东方科技集团股份有限公司 | Backlight adjusting method and device of display device and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112951169A (en) | 2021-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8189013B2 (en) | Video signal processing device and method of processing gradation | |
| US8933975B2 (en) | Display device and display control method | |
| JP5460435B2 (en) | Image display device and control method of image display device | |
| WO2008026066A1 (en) | Adjusting brightness of a display image in a display having an adjustable intensity light source | |
| CN112951169B (en) | Backlight control method and device of display module and display module | |
| CN110322833B (en) | Display driving method, method for controlling light emission of display panel and display panel | |
| JP2001306026A (en) | Plasma display device | |
| US7193598B2 (en) | Noise suppressing method for switching on/off flat panel display | |
| US20170010845A1 (en) | Light control device, display device, multiscreen display system, light control method, and program | |
| CN110164385B (en) | Backlight brightness adjusting method | |
| CN104460940A (en) | Energy-saving display method and system of screen of smart phone or tablet personal computer | |
| JP2019159252A5 (en) | Display devices, control methods and programs | |
| JP2006301049A (en) | Display device and method | |
| JP2013225722A (en) | Information processing device, display control method, and display control program | |
| US6879326B1 (en) | Apparatus and method for highlighting selected portions of a display screen | |
| KR20150021753A (en) | Display device | |
| CN115083342A (en) | Display device and screen brightness adjusting method | |
| CN112863441A (en) | Display method and device | |
| KR20030088295A (en) | Method and apparatus of driving plasma display panel | |
| KR20030084198A (en) | display apparatus and method for adjusting the brightness thereof | |
| CN101488315A (en) | Plasma display device and method of driving the same | |
| KR100453893B1 (en) | Apparatus to control driving power automatically for plasma display panel and the method thereof | |
| KR20070071650A (en) | Apparatus and method for removing image sticking, and plasma display panel having function of removing image sticking | |
| KR20030088540A (en) | Apparatus and method of driving plasma display panel | |
| CN114550639B (en) | Control method, device and medium for improving coupling of LED display screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |