WO2017113326A1 - 显示屏背光控制方法、装置及终端 - Google Patents

显示屏背光控制方法、装置及终端 Download PDF

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Publication number
WO2017113326A1
WO2017113326A1 PCT/CN2015/100184 CN2015100184W WO2017113326A1 WO 2017113326 A1 WO2017113326 A1 WO 2017113326A1 CN 2015100184 W CN2015100184 W CN 2015100184W WO 2017113326 A1 WO2017113326 A1 WO 2017113326A1
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WO
WIPO (PCT)
Prior art keywords
area
backlight
display screen
light source
display
Prior art date
Application number
PCT/CN2015/100184
Other languages
English (en)
French (fr)
Inventor
赵凡凡
赵京
Original Assignee
华为技术有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to US16/067,006 priority Critical patent/US10720111B2/en
Priority to CN201580071347.8A priority patent/CN107124902B/zh
Priority to PCT/CN2015/100184 priority patent/WO2017113326A1/zh
Publication of WO2017113326A1 publication Critical patent/WO2017113326A1/zh

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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
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3265—Power saving in display device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • 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
    • G09G3/2092—Details of a display terminals using a flat panel, the details relating to the control arrangement of the display terminal and to the interfaces thereto
    • G09G3/2096—Details of the interface to the display terminal specific for a flat panel
    • 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
    • G09G3/3426—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines the different display panel areas being distributed in two dimensions, e.g. matrix
    • 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
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0613—The adjustment depending on the type of the information to be displayed
    • G09G2320/062—Adjustment of illumination source parameters
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0626—Adjustment of display parameters for control of overall brightness
    • 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
    • G09G2320/08—Arrangements within a display terminal for setting, manually or automatically, display parameters of the display terminal
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation
    • G09G2330/021—Power management, e.g. power saving
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2354/00—Aspects of interface with display user
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management

Definitions

  • the present application relates to the field of terminals, and in particular, to a display backlight control method, apparatus, and terminal.
  • the LCD (Liquid-Crystal Display) display is a display device that controls the direction of rotation of liquid crystal molecules by voltage change, thereby realizing image display. Since the LCD display has the advantages of low power consumption and long service life, in the prior art, more and more LCD displays are used as display devices for terminals such as mobile phones and tablet computers.
  • the core of the LCD display is an LCD optical module, which includes an upper glass substrate, a lower glass substrate, and a liquid crystal cell disposed in the two glass substrates, wherein the lower glass substrate is provided with a thin film transistor, A color filter is disposed on the upper glass substrate.
  • the LCD optical module does not emit light by itself, so if light is to be emitted from the upper glass substrate of the LCD display, the light source is used to provide backlight for the LCD display, so that the light emitted by the light source is incident from the lower glass substrate of the LCD display. .
  • LEDs Light Emitting Diodes
  • LEDs are commonly used in the prior art to provide backlights for LCD optical modules. Since the LED is a point light source, in order to make the backlight brightness provided by the LED uniform, it is also necessary to use a light guide plate to diffuse the LED light, thereby converting the LED from a point light source to a surface light source, thereby using the surface light source as the LCD optical module. Provide backlighting.
  • the area of LCD displays has also increased, and the area of corresponding LCD optical modules has also increased.
  • the area of the surface light source converted by the LED point light source is limited, as the area of the LCD display screen continues to increase, the number of LEDs used to provide backlighting for the LCD optical module in the LCD display screen is also increasing. The increase in the number of LEDs will increase the power consumption of the LCD display.
  • the embodiment of the present application provides a display backlight control method, device, and terminal, which can reduce the power consumption of the display.
  • the embodiment of the present application provides a display backlight control method, the method includes: the terminal first determining a backlight open area of the display screen; and then determining a specified light source to be lit according to the backlight open area; Specify the light source.
  • the terminal can only illuminate part of the light source of the display screen, thereby reducing the power consumption of the light source and reducing the power consumption of the display screen.
  • the terminal may determine the backlight open area according to a contact condition of the display screen and the object.
  • the terminal may first determine a contact area where the display screen meets the object, and then the area of the contact area and the display screen When the ratio of the area is greater than or equal to the threshold, the area of the display screen except the contact area is used as the backlight opening area; or the terminal may first determine the contact area where the display screen meets the object; When the contact area does not change within the first duration, the area of the display screen other than the contact area is used as the backlight opening area.
  • the terminal can determine the backlight opening area according to the contact condition between the display screen and the object, so that different backlight opening areas can be determined according to different requirements.
  • the terminal may also determine the backlight open area according to the user interface image. For example, when the display screen is used to display a specified user interface, the terminal may use the display screen to display a specified user interface element area in the specified user interface as the backlight open area. With this implementation manner, the terminal can determine different backlight opening areas according to different requirements.
  • the terminal may further correct the backlight open area according to the specified light source. Displays the chroma of the image. The terminal corrects the chromaticity of the image displayed by the backlight opening area according to the specified light source, so that the brightness of the image displayed by the backlight opening area can be made uniform.
  • the present application also provides a backlight control apparatus for a liquid crystal display, the apparatus comprising means for performing the steps included in the various implementations of the first aspect.
  • the application further provides a terminal, where the terminal includes a processor, a display screen, and a memory.
  • the processor can execute the program or instructions stored in the memory to effect control of the backlight of the display screen in the manner described in various implementations of the first aspect.
  • the present application further provides a storage medium that can store a program that, when executed, can implement some or all of the steps in various embodiments of the data transmission method provided by the present invention.
  • the method, the device and the terminal provided by the embodiment of the present application are used when the display screen needs to display an image to the user. Only a part of the light source of the display screen can be illuminated, so that the power consumption of the light source can be reduced, and the power consumption of the display screen can be reduced.
  • FIG. 1 is a schematic structural diagram of an embodiment of a terminal according to the present invention.
  • FIG. 2 is a schematic view showing the position relationship between a light source and a display screen according to the present invention
  • FIG. 3 is a flow chart of an embodiment of a display backlight control method according to the present invention.
  • Figure 4 is a schematic view showing the window opening area of the holster of the present invention.
  • FIG. 5 is a schematic structural view of an embodiment of a display backlight providing apparatus according to the present invention.
  • FIG. 1 is a schematic structural diagram of an embodiment of a terminal according to the present application.
  • the terminal may include a mobile phone, a tablet computer, a personal digital assistant (PDA), a point of sales (POS), a car computer, and the like.
  • PDA personal digital assistant
  • POS point of sales
  • the terminal may include a radio frequency (RF) circuit 110 , a memory 130 , an input unit 130 , a display unit 140 , a sensor 150 , an audio circuit 160 , and a wireless fidelity ( WiFi ).
  • RF radio frequency
  • Module 170, processor 180, and power supply 190 and the like It will be understood by those skilled in the art that the structure of the handset shown in FIG. 1 does not constitute a limitation to the handset, and may include more or less components than those illustrated, or some components may be combined, or different components may be arranged.
  • the RF circuit 110 can be used for transmitting and receiving information or during a call, and receiving and transmitting the signal. Specifically, after receiving the downlink information of the base station, the processor 180 processes the data. In addition, the uplink data is designed to be sent to the base station.
  • RF circuits include, but are not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a Low Noise Amplifier (LNA), a duplexer, and the like.
  • RF circuitry 110 can also communicate with the network and other devices via wireless communication.
  • the wireless communication may use any communication standard or protocol, including but not limited to Global System of Mobile communication (GSM), Using General Packet Radio Service (GPRS), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (Long Term Evolution) , LTE), email, Short Messaging Service (SMS), etc.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • LTE Long Term Evolution
  • SMS Short Messaging Service
  • the memory 130 can be used to store software programs and modules, and the processor 180 executes various functional applications and data processing of the terminals by running software programs and modules stored in the memory 130.
  • the memory 130 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may be stored. Data created according to the use of the terminal (such as audio data, phone book, etc.).
  • memory 130 can include high speed random access memory, and can also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
  • the input unit 130 can be configured to receive input numeric or character information and to generate key signal inputs related to user settings and function control of the terminal.
  • the input unit 130 may include a touch panel 131 and other input devices 132.
  • the touch panel 131 also referred to as a touch screen, can collect touch operations on or near the user (such as a user using a finger, a stylus, or the like on the touch panel 131 or near the touch panel 131. Operation), and drive the corresponding connecting device according to a preset program.
  • the touch panel 131 may include two parts: a touch detection device and a touch controller.
  • the touch detection device detects the touch orientation of the user, and detects a signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts the touch information into contact coordinates, and sends the touch information.
  • the processor 180 is provided and can receive commands from the processor 180 and execute them.
  • the touch panel 131 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the input unit 130 may also include other input devices 132.
  • other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackballs, mice, joysticks, and the like.
  • the display unit 140 can be used to display information input by the user or information provided to the user as well as various menus of the terminal.
  • the display unit 140 may include a display screen 141.
  • the touch panel 131 can cover the display screen 141.
  • the touch panel 131 detects a touch operation on or near the touch panel 131, the touch panel 131 transmits to the processor 180 to determine the type of the touch event, and then the processor 180 according to the touch event.
  • the type provides a corresponding visual output on display 141.
  • the touch panel 131 and the display screen 141 are two independent components to implement the input and input functions of the terminal, in some embodiments, the touch panel 131 and the display screen 141 may be The input and output functions of the terminal are implemented by integration.
  • the terminal may also include at least one type of sensor 150, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor may include an ambient light sensor and a proximity sensor, wherein the ambient light sensor may adjust the brightness of the display screen 141 according to the brightness of the ambient light, and the proximity sensor may close the display screen 141 when the terminal moves to the ear. And / or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (usually three axes). When it is stationary, it can detect the magnitude and direction of gravity.
  • the terminal can also be configured with gyroscopes, barometers, hygrometers, thermometers, infrared sensors and other sensors.
  • An audio circuit 160, a speaker 161, and a microphone 162 can provide an audio interface between the user and the terminal.
  • the audio circuit 160 can transmit the converted electrical data of the received audio data to the speaker 161 for conversion to the sound signal output by the speaker 161; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal by the audio circuit 160. After receiving, it is converted into audio data, and then the audio data is output to the RF circuit 108 for transmission to, for example, another mobile phone, or the audio data is output to the memory 130 for further processing.
  • WiFi is a short-range wireless transmission technology
  • the terminal can help users to send and receive emails, browse web pages, and access streaming media through the WiFi module 170, which provides wireless broadband Internet access for users.
  • FIG. 1 shows the WiFi module 170, it can be understood that it does not belong to the essential configuration of the terminal, and may be omitted as needed within the scope of not changing the essence of the invention.
  • the processor 180 is the control center of the terminal, connecting various portions of the entire handset with various interfaces and lines, by running or executing software programs and/or modules stored in the memory 130, and recalling data stored in the memory 130. Performing various functions and processing data of the terminal to perform overall monitoring on the mobile phone.
  • the processor 180 may include one or more processing units; preferably, the processor 180 may integrate an application processor and a modem processor, where the application processor mainly processes an operating system, a user interface, an application, and the like.
  • the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 180.
  • the terminal further includes a power source 190 (such as a battery) for supplying power to the various components.
  • a power source 190 such as a battery
  • the power source can be logically connected to the processor 180 through the power management system to manage functions such as charging, discharging, and power consumption through the power management system.
  • the terminal may further include a camera, a Bluetooth module, and the like, and details are not described herein again.
  • the display screen may refer to a non-self-illuminating display screen, for example, an edge-backlit LCD display, a direct-lit backlight LCD display, an electronic ink screen, and the like.
  • Backlit for the display The backlight source can be a point source, a line source or a surface source.
  • the display screen can be divided into a plurality of regions, and different regions can be backlighted by different light sources.
  • the light source can be an LED light strip.
  • Each of the light sources can be used to provide backlighting for an area of the display screen, and can also be used to provide backlighting for multiple areas of the display screen; and each area of the display screen can be provided by only one light source
  • the backlight can also be backlit by multiple light sources at the same time.
  • the LED strip that provides backlight for the LCD optical module may be disposed on at least one side of the display screen.
  • the LED light bar can be two sides of the display screen, the M1 to M4 and the N1 value N3 respectively represent different LED light bars, and the A1 to D3 represent different areas of the display screen. .
  • M1 is used to provide backlights for A1, A2, and A3; M2 is used to provide backlights for B1, B2, and B3; M3 is used to provide backlights for C1, C2, and C3; and M3 is used to provide backlights for D1, D2, and D3; N1 is used to provide backlights for A1, B1, C1, and D1; N2 is used to provide backlights for A2, B2, C2, and D2; and N3 is used to provide backlights for A3, B3, C3, and D3.
  • M3 provides backlighting for three regions, while N1 to N3 provide backlighting for four regions.
  • A1 to D3 are backlit by two light sources. Wherein each area may include at least one pixel.
  • the user of the terminal usually provides various types of screen protectors such as a holster for the terminal.
  • the holster can cover the display to provide protection to the display from scratches or chipping. Since the display screen is covered by the holster, in order to prevent the user from opening the holster every time to view the time displayed on the display, caller information, etc., the existing holster usually covers the display time, caller information, etc. The position of the content is set to open the window, so that the user can directly view the information displayed on the display by opening the window without opening the holster.
  • the area of the display screen corresponding to the window opening may be referred to as a holster window opening area; when the display screen is in a lock screen state, a display manner of displaying a specific image in the holster window opening area may be referred to as For the holster mode.
  • the user can only see the image displayed in the holster window area, while the images displayed in other areas are not visible to the user. Therefore, in the holster mode, simultaneously illuminating all the light sources of the display does not have any effect on the user viewing the image displayed on the display, but may cause unnecessary power consumption, so the terminal can only illuminate in the holster mode.
  • a backlit light source for the holster window area to reduce power consumption.
  • FIG. 3 is a schematic flow chart of an embodiment of a display backlight control method according to the present application. This embodiment can be performed by the terminal for controlling the backlight of the display of the terminal.
  • the present application will be further described below in conjunction with FIG.
  • Step 301 determining a backlight opening area of the display screen.
  • the backlight open area is an area in the display screen that needs to be turned on.
  • the backlight opening area refers to an area where the display screen is not blocked by an object such as a holster and can be seen by a user.
  • the backlight opening area may be a holster window opening area in the holster mode.
  • the terminal may determine the backlight opening area in different manners according to actual usage conditions.
  • the terminal may directly use a preset area in the display screen as the backlight open area. Since the holster matches the terminal, and the fenestration of the same holster is also in a position on the holster, the terminal can directly use a specific area of the display as the holster window opening area. For example, as shown in FIG. 4, a schematic diagram of the effect of covering the front side of the terminal cover for the holster, wherein the dotted line frame indicates the position of the display screen, the oblique line portion indicates the area covered by the holster, and the blank portion indicates that the display screen is not covered by the holster. The area, the holster window area. When the terminal detects that the display screen is covered by the holster, the hood opening area may be directly used as the backlight opening area.
  • the terminal may also determine the backlight open area according to a user interface image displayed on the display screen as needed.
  • the terminal may use, as the backlight open area, an area in the display screen for displaying a specified interface element, where the specified interface element may be part of an interface element included in the user interface image, such as a user interface.
  • the plugin widget
  • the terminal may use an area for displaying a weather plug-in in the display screen as a backlight open area.
  • the terminal may also determine the backlight open area according to the contact condition of the display screen and the object.
  • the object may refer to an object other than the terminal, and may be a holster in general.
  • the position and size of the hood window opening area may vary depending on the holster used.
  • the terminal may also determine the backlight opening area according to the contact state of the display screen and the object.
  • the terminal can determine the area where the display screen contacts the holster through the pressure detected by the pressure touch unit of the display screen, or determine the display screen and the holster according to the capacitance of the capacitive touch unit of the display screen. The area of contact, and then the area where the display screen is not in contact with the holster is used as the backlight opening area.
  • the holster may be a holster capable of causing a change in the electric field of the capacitive touch unit after being in contact with the display screen, or may be capable of being Show the holster that creates pressure.
  • the holster when the display screen is a capacitive touch screen, the holster is in contact with the capacitive touch screen.
  • One side can be a conductor.
  • the capacitive touch unit of the capacitive touch screen can generate a coupling capacitance, so that the terminal can determine the contact position of the display screen in contact with the object according to the coupling capacitance and Contact area.
  • a side of the holster that contacts the display screen has a convex structure.
  • the raised structure can create pressure on the pressure-sensitive touch screen when the edge of the holster is attracted to the edge of the front side of the handset.
  • the pressure sensor in the pressure-sensitive touch screen can detect the pressure, thereby enabling the terminal to determine the contact position and contact area of the display screen in contact with the object based on the pressure.
  • the terminal can determine whether the contact between the display screen and the object is caused by the holster cover or by the user's operation.
  • the display screen can be determined by the size of the contact area. It is in contact with the holster or in contact with the object. Specifically, the terminal may first determine a contact area where the display screen meets the object, and determine an area of the contact area; when a ratio of an area of the contact area to an area of the display screen is greater than or equal to a threshold The area of the display screen other than the contact area is used as the backlight opening area.
  • the contact area may be one or more. When the contact area is a plurality of discontinuous areas, a continuous area may be determined according to the predetermined rule according to a predetermined rule, and then the continuous area may be The area outside is used as a backlight opening area.
  • the terminal can also determine whether the display screen is in contact with the holster or is in contact with the object by detecting whether the contact area changes. Specifically, the terminal may first determine a contact area where the display screen meets the object according to the pressure received by the display screen, and detect whether the contact area changes within the first time period. If the contact area does not change within the first duration, the terminal may use the area of the display screen other than the contact area as the backlight-on area.
  • the change in the contact area may include a change in the position, area, and pressure of the contact area.
  • the backlight opening area may be the entire area of the display screen or a partial area of the display screen; when the backlight opening area is a partial area of the display screen, The backlight opening area may be one or more.
  • Step 302 Determine, according to the backlight opening area, a specified light source that needs to be lit among all the light sources of the display screen.
  • each of the light sources is only used to provide backlighting for a partial area of the display screen, different areas are provided with backlights by different light sources, and a backlight source is provided for each area.
  • Each light source also provides backlighting only for a fixed area. Therefore, after the backlight on region is determined, it can be easily determined which light sources provide backlight for the backlight-on region, and thus a light source that provides backlight for the backlight-on region can be used as the designated light source.
  • M1 and N2 that provide backlight for the A2 region are designated light sources.
  • M1, N1 and N2 are designated light sources.
  • Step 303 lighting the specified light source.
  • the terminal may illuminate only the designated light source among all the light sources of the display screen by the control of the driver or the controller, etc., without lighting other light sources other than the specified light source, thereby Reduce the amount of light that the light source is lit.
  • the terminal can determine that only M1 and N2 need to be illuminated without illuminating other light sources. In this case, the terminal can cause only the M1 and N2 of all the light sources to be illuminated by removing the power supply voltages other than M1 and N2 for the determination program or controller.
  • the terminal when the terminal displays an image, only a part of the light source can be illuminated, so that the power consumption of the light source can be reduced, and the power consumption of the display screen can be reduced.
  • the backlight of the display screen is usually formed by the light emitted by the point light source diffusing through the light guide plate. Therefore, if only the specified light source is illuminated, although the backlight can be provided with a backlight, since some of the light sources are not turned on, it is possible to make the backlight intensities of different sub-regions in the backlight-on region different, thereby causing display in the backlight display area.
  • the brightness of the image is uneven.
  • the specified light source When the specified light source is located on the left side of the backlight opening area, only the specified light source is turned on, which may cause the backlight on the left side of the area to be turned on to be weaker than the backlight on the right side, thereby causing the backlight to be opened.
  • the displayed image is uneven in brightness, resulting in uneven color of the image displayed in the backlight area.
  • the method may further include:
  • Step 304 Correct the chromaticity of the image displayed by the backlight opening area according to the specified light source.
  • the brightness of the backlight in the backlight-on region changes stepwise, that is, the backlight-on region gradually dims from the side far from the light source to the side close to the light source, and the backlight brightness of the backlight-on region is stepped.
  • the change since the color of the image is determined by the chromaticity and the brightness, the chromaticity of the image displayed by the backlight opening area can be adjusted to offset the difference between the brightness value of the backlight and the image displayed by the backlight opening area. The effect of color.
  • the terminal may first acquire a reference brightness value, and then adjust a chromaticity of an image displayed by each sub-area of the backlight-on region according to the reference brightness value.
  • Each of the sub-regions may include at least one pixel; the reference luminance value may be a preset value, or may be an average luminance value of the backlight-on region, or may be a certain sub-region of the backlight-on region. Brightness value.
  • the chromaticity of the image displayed by the sub-area may be correspondingly lowered; and when the backlight brightness value of a certain sub-area is lower than the reference brightness value , the chromaticity of the image displayed by the sub-area can be adjusted accordingly.
  • the amplitude of the chromaticity increase or decrease may be equal to the difference between the luminance value of the sub-region and the reference luminance value.
  • the terminal may first determine an average brightness value of the backlight-on region, and when the brightness value of a certain sub-area in the backlight-on region is greater than the average brightness value, the chromaticity of the image displayed in the sub-area may be lowered.
  • the amplitude of the chromaticity reduction is the same as the amplitude of the luminance value greater than the average luminance value; when the luminance value of the sub-region is smaller than the average luminance value, the color of the image displayed in the sub-region may be increased Degree, wherein the magnitude of the chrominance reduction is the same as the magnitude of the luminance value greater than the average luminance value.
  • each sub-area has a plurality of pixels
  • the backlight brightness of each sub-area can be determined by the brightness calculation of each pixel in the sub-area. Since the light source of the display screen and the relative position of each pixel are fixed, the brightness value of each pixel in the case of lighting different light sources can be determined by pre-measurement or calculation.
  • a backlight-on area of the display screen is determined, where the backlight-on area is an area to be displayed to a user in the display screen, and the backlight-on area refers to a backlight that needs to be turned on in the display screen. a region; determining a specified light source to be lit according to the backlight opening region; lighting the specified light source.
  • FIG. 5 it is a schematic structural diagram of an embodiment of a display backlight control device of the present application.
  • the device includes: an area determining unit 501, a light source determining unit 502, and a light source control. Unit 503.
  • the area determining unit 501 is configured to determine a backlight-on area of the display screen, where the backlight-on area is an area to be displayed to the user in the display screen, and the light source determining unit 502 is configured to open the area according to the backlight. Determining a specified light source that needs to be illuminated; a light source control unit 503 that illuminates the specified light source.
  • the area determining unit 501 is specifically configured to determine the backlight open area according to a contact condition of the display screen and an object.
  • the area determining unit 501 includes: a first contact area determining subunit, configured to determine a contact area where the display screen meets an object; and a first backlight opening area determining subunit, configured to When the ratio of the area of the contact area to the area of the display screen is greater than or equal to a threshold value, an area other than the contact area of the display screen is used as the backlight opening area.
  • the area determining unit 501 includes: a second contact area determining subunit, configured to determine a contact area where the display screen meets an object; and a second backlight opening area determining subunit, configured to When the contact area does not change within the first duration, the area of the display screen other than the contact area is used as the backlight opening area.
  • the area determining unit 501 is specifically configured to determine the backlight open area according to the user interface image.
  • the area determining unit 501 is configured to: when the display screen is used to display a specified user interface, use the display screen to display a specified user interface element area in the specified user interface as the backlight Open the area.
  • the light source determining unit 502 includes: a partition determining subunit, configured to determine a light source corresponding to each partition of the display screen, wherein each partition is provided with a backlight by a set of light sources; and the specified light source determining subunit is configured to: A light source that provides backlighting for the partition that coincides with the backlight opening area is used as the designated light source.
  • the device further includes: a chroma correction unit, configured to correct a chroma of the image displayed by the backlight on region according to the specified light source.
  • a chroma correction unit configured to correct a chroma of the image displayed by the backlight on region according to the specified light source.
  • the correction unit includes: a reference brightness acquisition sub-unit, configured to acquire a reference brightness value; and a chromaticity adjustment sub-unit, configured to adjust an image displayed by each sub-area of the backlight-on region according to the reference brightness value Chroma.
  • the chroma adjustment subunit is specifically configured to use a backlight brightness value in the sub-area higher than the base
  • the chromaticity of the image displayed by the sub-area is lowered, or when the backlight brightness value of the sub-area is lower than the reference brightness value, the image displayed by the sub-area is raised Chroma.
  • the processor is configured to determine a backlight open area of the display screen, determine a specified light source to be lit according to the backlight open area, and illuminate the designated light source.
  • the processor 180 may be configured to determine the backlight open area according to a contact condition of the LCD display screen 141 with an object.
  • the processor 180 may first determine a contact area where the LCD display screen 141 is in contact with an object; then when the ratio of the area of the contact area to the area of the LCD display screen 141 is greater than or equal to a threshold, The LCD display screen 141 is used as the backlight open area except for the contact area; or, the LCD display screen 141 may be removed when the contact area does not change within the first time period. An area other than the contact area is used as the backlight open area.
  • the processor 180 may be configured to determine the backlight open area according to the user interface image.
  • the processor 180 may use the LCD display screen 141 to display a specified user interface element area in the specified user interface as the backlight open area when the LCD display screen 141 is used to display a specified user interface.
  • the processor 180 may determine a light source corresponding to each partition of the LCD display screen 141, wherein each partition is provided with a backlight by a group of light sources; The overlapping regions provide a source of backlight as the designated source.
  • the processor 180 is further configured to correct chromaticity of an image displayed by the backlight open area according to the specified light source.
  • the processor 180 may preferentially acquire a reference brightness value; and then adjust a chromaticity of an image displayed by each sub-area of the backlight-on region according to the reference brightness value. Specifically, when the backlight luminance value of the sub-region is higher than the reference luminance value, the processor 180 may lower the chroma of the image displayed by the sub-region; when the backlight of the sub-region is When the brightness value is lower than the reference brightness value, the processor 180 may increase the chrominance of the image displayed by the sub-area.
  • the present application further provides a computer storage medium, wherein the computer storage medium may store a program, and the program may include some or all of the steps in the embodiments of the display backlight control method provided by the present application.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
  • the technology in the embodiment of the present application can be added by software.
  • the way to a common hardware platform is implemented.
  • the technical solution in the embodiments of the present application may be embodied in the form of a software product in essence or in the form of a software product, and the computer software product may be stored in a storage medium such as a ROM/RAM. , a diskette, an optical disk, etc., including instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present application or portions of the embodiments.
  • a computer device which may be a personal computer, server, or network device, etc.

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Abstract

提供了显示屏背光控制方法、显示屏背光控制装置及终端。显示屏背光控制方法包括：确定显示屏的背光开启区域(301)；根据所述背光开启区域确定需要点亮的指定光源(302)；点亮所述指定光源(303)。采用所提供的显示屏背光控制方法、显示屏背光控制装置及终端，终端可以仅点亮显示屏的部分光源，从而可以减小光源的耗电量，降低显示屏的耗电量。

Description

显示屏背光控制方法、装置及终端 技术领域
本申请涉及终端领域，尤其涉及显示屏背光控制方法、装置及终端。
背景技术
LCD(Liquid-Crystal Display)显示屏是通过电压改变来控制液晶分子的转动方向，从而实现图像显示的一种显示设备。由于LCD显示屏由于具有耗电量低、使用寿命长等优点，因此现有技术中，开始越来越多的采用LCD显示屏作为手机、平板电脑等终端的显示装置。
LCD显示屏的核心为LCD光学模组，所述LCD光学模组包括上层玻璃基板、下层玻璃基板以及设置在这两层玻璃基板中的液晶盒，所述下层玻璃基板上设置薄膜晶体管，所述上层玻璃基板上设置彩色滤光片。通过改变薄膜晶体管上的信号与电压，可以通过控制液晶盒中液晶分子的转动方向，控制从下层玻璃基板射入的光线从上层玻璃基板射出的情况，从而达到实现图像显示的效果。
由LCD光学模组自身不发光，因此如果要实现有光线从LCD显示屏的上层玻璃基板射出，使用光源为LCD显示屏提供背光，从而是光源所发射的光线从LCD显示屏下层玻璃基板射入。由于LED(Light Emitting Diode)就有体积小、耗电量低等优点，因此现有技术中通常使用LED为LCD光学模组提供背光。由于LED为点光源，为使LED所提供的背光亮度均匀，还需要使用导光板对LED的发光进行扩散，从而将LED从一个点光源转变为一个面光源，从而使用面光源为LCD光学模组提供背光。
随着科技的不断进步，LCD显示屏的面积也随之不断增大，相应的LCD光学模组的面积也在不断增大。由于随着LED点光源所转化成的面光源面积有限，随LCD显示屏面积的不断增大，LCD显示屏中用于为LCD光学模组提供背光的LED数量也随之不断增多。而LED的数量增多，会导致LCD显示屏的耗电量增大。
发明内容
本申请实施例提供了显示屏背光控制方法、装置及终端，可以降低显示屏的耗电量。
第一方面，本申请实施例提供了显示屏背光控制方法，该方法包括：终端首先确定显示屏的背光开启区域；然后根据所述背光开启区域确定需要点亮的指定光源；再点亮所述指定光源。采用本实现方式，终端可以仅点亮所述显示屏的部分光源，从而可以减小光源的耗电量，降低显示屏的耗电量。
结合第一方面，在第一方面第一种可能的实现方式中，终端可以根据所述显示屏与物体的接触状况确定所述背光开启区域。在根据所述显示屏与物体的接触状况确定所述背光开启区域时，终端可以首先确定所述显示屏与物体相接处的接触区域，然后在所述接触区域的面积与所述显示屏的面积之比大于或等于阈值时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域；或者，终端也可以首先确定所述显示屏与物体相接处的接触区域；然后在所述接触区域在第一时长内未发生变化时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。采用本实现方式，终端可以根据显示屏与物体的接触状况确定所述背光开启区域，从而可以根据需求不同确定不同的背光开启区域。
结合第一方面，在第一方面第二种可能的实现方式中，终端也可以根据用户界面图像确定所述背光开启区域。例如，当所述显示屏用于显示指定用户界面时，终端可以将所述显示屏用于显示所述指定用户界面中指定用户界面元素区域作为所述背光开启区域。采用本实现方式，终端可以根据需求不同确定不同的背光开启区域。
结合第一方面或第一方面第一至二种可能的实现方式其中任意一种，在第一方面第三种可能的实现方式中，所述终端还可以根据所述指定光源校正背光开启区域所显示图像的色度。终端根据所述指定光源校正背光开启区域所显示图像的色度，可以使所述背光开启区域所显示的图像亮度均匀。
第二方面，本申请还提供了一种液晶显示屏的背光控制装置，所述装置包括用于执行第一方面各种实现方式所包括步骤的单元。
第三方面，本申请还提供了一种终端，所述终端包括处理器、显示屏及存储器。所述处理器可以执行所述存储器中所存储的程序或指令，从而实现以第一方面各种实现方式所述的方法控制显示屏的背光。
第四方面，本申请还提供了一种存储介质，该计算机存储介质可存储有程序，该程序执行时可实现包括本发明提供的数据传输方法各实施例中的部分或全部步骤。
采用本申请实施例所提供方法、装置及终端，在显示屏需要向用户展示图像时， 可以仅点亮所述显示屏的部分光源，从而可以减小光源的耗电量，降低显示屏的耗电量。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，对于本领域普通技术人员而言，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1为本发明终端一个实施例的结构示意图；
图2为本发明光源与显示屏位置关系示意图；
图3为本发明显示屏背光控制方法一个实施例的流程；
图4为本发明皮套开窗区域示意图；
图5为本发明显示屏背光提供装置一个实施例的结构示意图。
具体实施方式
参见图1，为本申请终端一个实施例的结构示意图。
所述终端可以包括手机、平板电脑、个人数字助理(Personal Digital Assistant，PDA)、销售终端(Point of Sales，简称POS)、车载电脑等。
如图1所示，所述终端可以包括射频(Radio Frequency，简称RF)电路110、存储器130、输入单元130、显示单元140、传感器150、音频电路160、无线保真(Wireless Fidelity，简称WiFi)模块170、处理器180、以及电源190等部件。本领域技术人员可以理解，图1中示出的手机结构并不构成对手机的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面结合图1对所述终端的各个构成部件进行具体的介绍：
RF电路110可用于收发信息或通话过程中，信号的接收和发送，特别地，将基站的下行信息接收后，给处理器180处理；另外，将设计上行的数据发送给基站。通常，RF电路包括但不限于天线、至少一个放大器、收发信机、耦合器、低噪声放大器(Low Noise Amplifier，简称LNA)、双工器等。此外，RF电路110还可以通过无线通信与网络和其他设备通信。所述无线通信可以使用任一通信标准或协议，包括但不限于全球移动通讯系统(Global System of Mobile communication，简称GSM)、通 用分组无线服务(General Packet Radio Service，简称GPRS)、码分多址(Code Division Multiple Access，简称CDMA)、宽带码分多址(Wideband Code Division Multiple Access，简称WCDMA)、长期演进(Long Term Evolution，LTE)、电子邮件、短消息服务(Short Messaging Service，简称)SMS等。
存储器130可用于存储软件程序以及模块，处理器180通过运行存储在存储器130的软件程序以及模块，从而执行所述终端的各种功能应用以及数据处理。存储器130可主要包括存储程序区和存储数据区，其中，存储程序区可存储操作系统、至少一个功能所需的应用程序(比如声音播放功能、图象播放功能等)等；存储数据区可存储根据所述终端的使用所创建的数据(比如音频数据、电话本等)等。此外，存储器130可以包括高速随机存取存储器，还可以包括非易失性存储器，例如至少一个磁盘存储器件、闪存器件、或其他易失性固态存储器件。
输入单元130可用于接收输入的数字或字符信息，以及产生与所述终端的用户设置以及功能控制有关的键信号输入。具体地，输入单元130可包括触控面板131以及其他输入设备132。触控面板131，也称为触摸屏，可收集用户在其上或附近的触摸操作(比如用户使用手指、触笔等任何适合的物体或附件在触控面板131上或在触控面板131附近的操作)，并根据预先设定的程式驱动相应的连接装置。可选的，触控面板131可包括触摸检测装置和触摸控制器两个部分。其中，触摸检测装置检测用户的触摸方位，并检测触摸操作带来的信号，将信号传送给触摸控制器；触摸控制器从触摸检测装置上接收触摸信息，并将它转换成触点坐标，再送给处理器180，并能接收处理器180发来的命令并加以执行。此外，可以采用电阻式、电容式、红外线以及表面声波等多种类型实现触控面板131。除了触控面板131，输入单元130还可以包括其他输入设备132。具体地，其他输入设备132可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆等中的一种或多种。
显示单元140可用于显示由用户输入的信息或提供给用户的信息以及所述终端的各种菜单。显示单元140可包括显示屏141。进一步的，触控面板131可覆盖显示屏141，当触控面板131检测到在其上或附近的触摸操作后，传送给处理器180以确定触摸事件的类型，随后处理器180根据触摸事件的类型在显示屏141上提供相应的视觉输出。虽然在图1中，触控面板131与显示屏141是作为两个独立的部件来实现所述终端的输入和输入功能，但是在某些实施例中，可以将触控面板131与显示屏141集成而实现所述终端的输入和输出功能。
所述终端还可包括至少一种传感器150，比如光传感器、运动传感器以及其他传感器。具体地，光传感器可包括环境光传感器及接近传感器，其中，环境光传感器可根据环境光线的明暗来调节显示屏141的亮度，接近传感器可在所述终端移动到耳边时，关闭显示屏141和/或背光。作为运动传感器的一种，加速计传感器可检测各个方向上(一般为三轴)加速度的大小，静止时可检测出重力的大小及方向，可用于识别手机姿态的应用(比如横竖屏切换、相关游戏、磁力计姿态校准)、振动识别相关功能(比如计步器、敲击)等；至于所述终端还可配置的陀螺仪、气压计、湿度计、温度计、红外线传感器等其他传感器。
音频电路160、扬声器161，麦克风162可提供用户与所述终端之间的音频接口。音频电路160可将接收到的音频数据转换后的电信号，传输到扬声器161，由扬声器161转换为声音信号输出；另一方面，麦克风162将收集的声音信号转换为电信号，由音频电路160接收后转换为音频数据，再将音频数据输出至RF电路108以发送给比如另一手机，或者将音频数据输出至存储器130以便进一步处理。
WiFi属于短距离无线传输技术，所述终端通过WiFi模块170可以帮助用户收发电子邮件、浏览网页和访问流式媒体等，它为用户提供了无线的宽带互联网访问。虽然图1示出了WiFi模块170，但是可以理解的是，其并不属于所述终端的必须构成，完全可以根据需要在不改变发明的本质的范围内而省略。
处理器180是所述终端的控制中心，利用各种接口和线路连接整个手机的各个部分，通过运行或执行存储在存储器130内的软件程序和/或模块，以及调用存储在存储器130内的数据，执行所述终端的各种功能和处理数据，从而对手机进行整体监控。可选的，处理器180可包括一个或多个处理单元；优选的，处理器180可集成应用处理器和调制解调处理器，其中，应用处理器主要处理操作系统、用户界面和应用程序等，调制解调处理器主要处理无线通信。可以理解的是，上述调制解调处理器也可以不集成到处理器180中。
所述终端还包括给各个部件供电的电源190(比如电池)，优选的，电源可以通过电源管理系统与处理器180逻辑相连，从而通过电源管理系统实现管理充电、放电、以及功耗等功能。
尽管未示出，所述终端还可以包括摄像头、蓝牙模块等，在此不再赘述。
在本申请各个实施例中，所述显示屏可以是指非自发光显示屏，例如，边缘背光型LCD显示屏、直下背光型LCD显示屏、电子墨水屏等。为所显示屏的提供背光的 背光光源可以为点光源、线光源或面光源。所述显示屏可以被划分为多个区域，不同的区域可以由不同的光源提背光。
通常情况下，所述光源可以为LED灯条。每一个所述光源可以用于为所述显示屏的一个区域提供背光，也可以用于为所述显示屏的多个区域提供背光；而所述显示屏的每一个区域可以只由一个光源提供背光，也可以同时由多个光源提供背光。
以边缘背光型LCD为例，所述为LCD光学模组提供背光的LED灯条可以设置在所所述显示屏的至少一个侧边。如图2所示，LED灯条可以所述显示屏的两个侧边，所述M1至M4以及N1值N3分别表示不同的LED灯条，所述A1至D3表示所述显示屏的不同区域。其中，M1用于为A1、A2及A3提供背光；M2用于为B1、B2及B3提供背光；M3用于为C1、C2及C3提供背光；M3用于为D1、D2及D3提供背光；N1用于为A1、B1、C1及D1提供背光；N2用于为A2、B2、C2及D2提供背光；N3用于为A3、B3、C3及D3提供背光。至M3分别为三个区域提供背光，而N1至N3则分别为四个区域提供背光。相应的，A1至D3均由两个光源提供背光。其中，每一个区域可以包括至少一个像素。
出于保护显示屏的目的，终端的用户通常会为终端配备皮套等各类屏幕保护套。所述皮套可以覆盖显示屏，从而为显示屏提供保护，避免显示屏出现划伤或碎裂。由于显示屏被皮套所覆盖，为避免用户每次都要打开皮套才能查看显示屏上所显示的时间、来电信息等内容，现有皮套上通常都会覆盖显示屏显示时间、来电信息等内容的位置设置开窗，从而使用户可以不用翻开皮套，通过开窗就直接查看显示屏上所显示的信息。显示屏中与所述开窗相对应的区域可以被称作皮套开窗区域；当所述显示屏处于锁屏状态时，在皮套开窗区域显示特定的图像的显示方式则可以被称为皮套模式。
在皮套模式下，用户只能看到皮套开窗区域所显示的图像，而其他区域所显示的图像并不能被用户所看到。因此在皮套模式下，同时点亮显示屏的全部光源并不能对用户查看显示屏所显示的图像产生任何效果，反而会导致不必要的电量消耗，因此在皮套模式下终端可以仅点亮为皮套开窗区域提供背光的光源，从而减小电量消耗。
参见图3，为本申请显示屏背光控制方法一个实施例的流程示意图。该实施例可以由终端执行，用于控制终端的显示屏的背光。下面结合图3对本申请做进一步说明。
步骤301，确定所述显示屏的背光开启区域。
其中，所述背光开启区域为显示屏中需要开启背光的区域。通常情况下所述背光开启区域是指所述显示屏未被皮套等物体遮挡能够被用户看到的区域。例如，当显示屏被皮套所覆盖时，所述背光开启区域可以为皮套模式下的皮套开窗区域。
终端可以根据实际使用状况不同采用不同的方式确定所述背光开启区域。
可选的，终端可以直接将所述显示屏中的预设区域作为所述背光开启区域。由于皮套与终端相匹配，而同一类皮套的开窗也处于所述皮套上的一个位置，因此，终端可以直接将所述显示屏的特定区域作为皮套开窗区域。例如，如图4所示，为皮套覆盖终端正面的效果示意图，其中，虚线框表示显示屏的位置，斜线部分表示皮套覆盖的区域，空白部分表示所述显示屏未被皮套覆盖的区域，即皮套开窗区域。当终端检测到所述显示屏的被皮套所覆盖时，可以直接将与所述皮套开窗区域作为所述背光开启区域。
可选的，终端也可以根据需要在所述显示屏上显示的用户界面图像确定所述背光开启区域。所述终端可以将所述显示屏中用于显示指定界面元素的区域作为所述背光开启区域，其中，所述指定界面元素可以为所述用户界面图像所包含界面元素中的一部分，例如用户界面中的插件(widget)。
例如，在所述显示屏用于显示锁屏界面时，所述终端可以将显示屏中用于显示天气插件的区域作为背光开启区域
可选的，终端也可以根据所述显示屏与物体的接触状况确定所述背光开启区域。其中，所述物体可以是指除终端之外的其他物体，通常情况下可以为皮套。
由于在采用不同的皮套时，皮套开窗区域的位置和大小可能各不相同。当所述显示屏为触控屏(touch screen)时，终端也可以跟所述显示屏与物体的接触状况确定所述背光开启区域。终端可以通过显示屏的压力触控单元所检测到的压力确定所述显示屏与皮套相接触的区域，或者根据所述显示屏的电容触控单元的电容确定所述显示屏与皮套相接触的区域，然后将所述显示屏未与皮套相接触的区域作为所述背光开启区域。
为使终端能够检测到皮套与显示屏是否接触，所述皮套可以是能够在与所述显示屏接触后能引起电容触控单元的电场发生变化的皮套，或者可以是能够在所述显示上产生压力的皮套。
例如，当所述显示屏为电容式触控屏时，所述皮套与所述电容式触控屏相接触的 一侧可以为导体。当所述皮套与所述显示屏相接触时，能够使电容式触控屏的电容触控单元产生耦合电容，从而使终端可以根据所述耦合电容确定显示屏与物体相接触的接触位置及接触面积。
又如，当所述显示屏为压力感应式触摸屏时，所述皮套与所述显示屏相接触的一侧存在凸起状结构。当所述皮套的边缘吸附在所述手机正面的边缘时，所述凸起状结构可以在所述压力感应式触摸屏上产生压力。压力感应式触摸屏中的压力传感器能检测到所述压力，从而使终端能够根据所述压力确定显示屏与物体相接触的接触位置及接触面积。
由于用户在进行触控操作时，也会与显示屏发生接触。因此为避免发生误判。终端可以通过接触区域的面积来判定显示屏与物体的接触是因为被皮套覆盖所造成还是由用户操作所造成。
由于所述皮套与显示屏相接触时的接触区域要远大于用户在进行触控操作时手指或触控笔与显示屏相接触的接触区域，因此可以通过接触区域的面积大小来判定显示屏是与皮套相接触或者是与物体相接触。具体来说，终端可以首先确定所述显示屏与物体相接处的接触区域，并确定所述接触区域的面积；当所述接触区域的面积与所述显示屏的面积之比大于或等于阈值时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。其中，所述接触区域可以为一个也可以为多，当所述接触区域为多个不连续的区域时，可以按照预定规则根据所述多个接触区域确定一个连续区域，然后将所述连续区域之外的区域作为背光开启区域。
当显示屏与物体的接触由用户操作导致时，随着用户操作的变化，接触区域的大小及位置也会随之发生变化。而当显示屏与皮套接触时，接触区域的大小及位置会在一段时间内保持不变。因此终端也可以通过检测所述接触区域是否发生变化来判定显示屏是与皮套相接触或者是与物体相接触。具体来说，终端可以首先根据显示屏受到的压力确定所述显示屏与物体相接处的接触区域，并检测所述接触区域在第一时长内是否发生变化。如果当所述接触区域在第一时长内未发生变化，终端可以将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。其中所述接触区域发生变化可以包括所述接触区域的位置、面积及压力大小发生变化。
在此需要说明的是，所述背光开启区域可以为所述显示屏的全部区域，也可以为所述显示屏的部分区域；当所述背光开启区域为所述显示屏的部分区域时，所述背光开启区域可以为一个也可以为多个。
步骤302，根据所述背光开启区域确定所述显示屏所有光源中需要点亮的指定光源。
由于显示屏的背光通常由多个光源提供，每一个光源仅用于为所述显示屏的部分区域提供背光，不同的区域则由不同的光源提供背光，并且为每个区域提供背光的光源固定，每个光源也只为固定的区域提供背光。因此在所述背光开启区域确定之后，可以很容易确定由哪些光源为背光开启区域提供背光，进而可以将为所述背光开启区域提供背光的光源作为所述指定光源。
如图2所示，当所述背光开启区域在所述A2区域范围内时，则为A2区域提供背光的M1及N2即为指定光源。当所述背光开启区域与A1及A2均有重合时，则M1、N1及N2均为指定光源。
步骤303，点亮所述指定光源。
在所述指定光源确定之后，终端可以通过驱动程序或控制器等的控制，仅点亮所述显示屏所有光源中的指定光源，而不点亮所述指定光源的之外的其他光源，从而减少光源点亮的数量。
例如，当仅所述M1及N2为指定光源时，终端可以确定仅需点亮M1及N2，而不用点亮其他的光源。在此情况下，终端可以通过为确定程序或控制器撤除除M1及N2之外其他光源供电电压，从而使所有光源中仅M1及N2被点亮。
采用本申请实施，在终端在显示图像时，可以仅点亮部分光源，从而可以减小光源的耗电量，降低显示屏的耗电量。
由于显示屏的光源通常为点光源，显示屏的背光通常由点光源所发射光线经过导光板扩散后形成。因此如果仅点亮指定光源，虽然能够为背光开启区域提供背光，但是由于部分光源未开启，因此有可能使背光开启区域中不同子区域的背光强度不同，从而导致在所述背光显示区域所显示的图像亮度不均匀。
当指定光源位于所述背光开启区域左侧时，仅开启所述之指定光源的话，可能会导致所述待开启背光的区域左侧的背光强度弱于右侧的背光，进而导致背光开启区域所显示的图像亮度不均匀，从而使背光区域所显示的图像色彩不均匀。
为使所述背光开启区域所显示的图像色彩均匀，可选的，所述方法还可以包括：
步骤304，所述根据所述指定光源校正背光开启区域所显示图像的色度。
通常情况下，所述背光开启区域的背光亮度呈现阶梯式变化，即，背光开启区的会从远离光源的一侧到靠近光源的一侧逐渐变暗，由于背光开启区域的背光亮度呈现阶梯式变化，由于图像的色彩由色度和亮度共同决定，因此可以通过调整所述背光开启区域所显示图像的色度(chromaticity)，以抵消所述背光开启的亮度值差异对背光开启区域所显示图像色彩的影响。
终端可以首先获取基准亮度值，然后根据所述基准亮度值调整所述背光开启区域各个子区域所显示图像的色度。其中，每一个所述子区域可以包括至少一个像素；所述基准亮度值可以是预设值，也可以是背光开启区域的平均亮度值，或者也可以是所述背光开启区域中某个子区域的亮度值。
当某个子区域的背光亮度值高于所述基准亮度值时，可以对应调低该子区域所显示图像的色度；而当某个子区域所述的背光亮度值低于所述基准亮度值时，则可以对应调高该子区域所显示图像的色度。其中，色度调高或调低的幅度可以与所述子区域的亮度值与基准亮度值相差的幅度相等。
例如，终端可以首先确定背光开启区域的平均亮度值，当所述背光开启区域中某子区域的亮度值大于所述平均亮度值时，则可以调低在该子区域所显示图像的色度，其中，色度调低的幅度与所述亮度值大于平均亮度值的幅度相同；当所述子区域的亮度值小于所述平均亮度值时，则可以调高在该子区域所显示图像的色度，其中，色度调低的幅度与所述亮度值大于平均亮度值的幅度相同。
在此需要说明的是，由于每一个子区域都有若干个像素组成，因此每一个子区域的背光亮度都可以通过该子区域内各个像素的亮度计算确定。由于所述显示屏的光源及每一个像素的相对位置固定，因此每一个像素在点亮不同光源情况下的亮度值可以通过预先测量或计算确定。
在本实施例中，确定所述显示屏的背光开启区域，所述背光开启区域为所述显示屏中需向用户展示的区域，所述背光开启区域是指所述显示屏中需要开启背光的区域；根据所述背光开启区域确定需要点亮的指定光源；点亮所述指定光源。采用本实施例，在终端在显示图像时，可以仅点亮部分光源，从而可以减小光源的耗电量，降低显示屏的耗电量。
参见图5，为本申请显示屏背光控制装置一个实施例的结构示意图。
如图5所示，所述装置包括：区域确定单元501，光源确定单元502及光源控制 单元503。
其中，区域确定单元501，用于确定所述显示屏的背光开启区域，所述背光开启区域为所述显示屏中需向用户展示的区域；光源确定单元502，用于根据所述背光开启区域确定需要点亮的指定光源；光源控制单元503，点亮所述指定光源。
可选的，所述区域确定单元501，具体用于根据所述显示屏与物体的接触状况确定所述背光开启区域。
可选的，所述区域确定单元501包括：第一接触区域确定子单元，用于确定所述显示屏与物体相接处的接触区域；第一背光开启区域确定子单元，用于在所述接触区域的面积与所述显示屏的面积之比大于或等于阈值时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
可选的，所述区域确定单元501包括：第二接触区域确定子单元，用于确定所述显示屏与物体相接处的接触区域；第二背光开启区域确定子单元，用于在所述接触区域在第一时长内未发生变化时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
可选的，所述区域确定单元501，具体用于根据用户界面图像确定所述背光开启区域。
可选的，所述区域确定单元501，具体用于在所述显示屏用于显示指定用户界面时，将所述显示屏用于显示所述指定用户界面中指定用户界面元素区域作为所述背光开启区域。
可选的，所述光源确定单元502包括：分区确定子单元，用于确定所述显示屏各个分区对应的光源，其中，每一个分区由一组光源提供背光；指定光源确定子单元，用于将为与所述背光开启区域存在重合的所述分区提供背光的光源，作为所述指定光源。
可选的，所述装置还包括：色度校正单元，用于根据所述指定光源校正背光开启区域所显示图像的色度。
可选的，所述校正单元包括：基准亮度获取子单元，用于获取基准亮度值；色度调整子单元，用于根据所述基准亮度值调整所述背光开启区域各个子区域所显示图像的色度。
可选的，所述色度调整子单元，具体用于在所述子区域的背光亮度值高于所述基 准亮度值时，调低所述子区域所显示图像的色度，或者，在所述子区域所述的背光亮度值低于所述基准亮度值时，调高所述子区域所显示图像的色度。
在本申请实施例中，所述处理器，用于确定所述显示屏的背光开启区域；根据所述背光开启区域确定需要点亮的指定光源；点亮所述指定光源。
可选的，在确定指定光源时，所述处理器180，可以用于根据所述LCD显示屏141与物体的接触状况确定所述背光开启区域。所述处理器180可以首先确定所述LCD显示屏141与物体相接处的接触区域；然后在当所述接触区域的面积与所述LCD显示屏141的面积之比大于或等于阈值时，将所述LCD显示屏141除所述接触区域之外的区域作为所述背光开启区域；或者，也可以在所述接触区域在第一时长内未发生变化时，将所述LCD显示屏141除所述接触区域之外的区域作为所述背光开启区域。
可选的，在确定指定光源时，所述处理器180，可以用于根据用户界面图像确定所述背光开启区域。所述处理器180可以在所述LCD显示屏141用于显示指定用户界面时，将所述LCD显示屏141用于显示所述指定用户界面中指定用户界面元素区域作为所述背光开启区域。
可选的，在确定指定光源时，所述处理器180可以确定所述LCD显示屏141各个分区对应的光源，其中，每一个分区由一组光源提供背光；将为与所述背光开启区域存在重合的所述分区提供背光的光源，作为所述指定光源。
可选的，所述处理器180，还可以用于根据所述指定光源校正背光开启区域所显示图像的色度。所述处理器180可以首选获取基准亮度值；然后根据所述基准亮度值调整所述背光开启区域各个子区域所显示图像的色度。具体来说，当所述子区域的背光亮度值高于所述基准亮度值时，所述处理器180可以调低所述子区域所显示图像的色度；当所述子区域所述的背光亮度值低于所述基准亮度值时，所述处理器180可以调高所述子区域所显示图像的色度。
具体实现中，本申请还提供一种计算机存储介质，其中，该计算机存储介质可存储有程序，该程序执行时可包括本申请提供的显示屏背光控制方法各实施例中的部分或全部步骤。所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，简称ROM)或随机存储记忆体(Random Access Memory，简称RAM)等。
本领域的技术人员可以清楚地了解到本申请实施例中的技术可借助软件加必需 的通用硬件平台的方式来实现。基于这样的理解，本申请实施例中的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例或者实施例的某些部分所述的方法。
本说明书中的各个实施例均采用递进的方式描述，各个实施例之间相同相似的部分互相参见即可。以上所述的本申请实施方式，并不构成对本申请保护范围的限定。

Claims (24)

  1. 一种液晶显示屏的背光控制方法，其特征在于，所述方法包括：
    确定显示屏的背光开启区域；
    根据所述背光开启区域确定需要点亮的指定光源；
    点亮所述指定光源。
  2. 如权利要求1所述的方法，其特征在于，所述确定显示屏的背光开启区域包括：
    根据所述显示屏与物体的接触状况确定所述背光开启区域。
  3. 如权利要求2所述的方法，其特征在于，所述根据所述显示屏与物体的接触状况确定所述背光开启区域包括：
    确定所述显示屏与物体相接处的接触区域；
    当所述接触区域的面积与所述显示屏的面积之比大于或等于阈值时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
  4. 如权利要求2所述的方法，其特征在于，所述根据所述显示屏与物体的接触状况确定所述背光开启区域包括：
    确定所述显示屏与物体相接处的接触区域；
    当所述接触区域在第一时长内未发生变化时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
  5. 如权利要求1所述的方法，其特征在于，所述确定背光开启区域包括：
    根据用户界面图像确定所述背光开启区域。
  6. 如权利要求5所述的方法，其特征在于，所述根据用户界面图像确定背光开启区域包括：
    当所述显示屏用于显示指定用户界面时，将所述显示屏用于显示所述指定用户界面中指定用户界面元素区域作为所述背光开启区域。
  7. 如权利要求1至6任一项所述的方法，其特征在于，所述方法还包括：
    根据所述指定光源校正背光开启区域所显示图像的色度。
  8. 如权利要求7所述的方法，其特征在于，所述根据所述指定光源校正背光开启区域所显示图像的色度包括：
    获取基准亮度值；
    根据所述基准亮度值调整所述背光开启区域各个子区域所显示图像的色度。
  9. 一种液晶显示屏的背光控制装置，其特征在于，所述装置包括：
    区域确定单元，用于确定所述显示屏的背光开启区域；
    光源确定单元，用于根据所述背光开启区域确定需要点亮的指定光源；
    光源控制单元，点亮所述指定光源。
  10. 如权利要求9所述的装置，其特征在于，
    所述区域确定单元，具体用于根据所述显示屏与物体的接触状况确定所述背光开启区域。
  11. 如权利要求10所述的装置，其特征在于，所述区域确定单元包括：
    第一接触区域确定子单元，用于确定所述显示屏与物体相接处的接触区域；
    第一背光开启区域确定子单元，用于在所述接触区域的面积与所述显示屏的面积之比大于或等于阈值时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
  12. 如权利要求10所述的装置，其特征在于，所述区域确定单元包括：
    第二接触区域确定子单元，用于确定所述显示屏与物体相接处的接触区域；
    第二背光开启区域确定子单元，用于在所述接触区域在第一时长内未发生变化时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
  13. 如权利要求9所述的装置，其特征在于，
    所述区域确定单元，具体用于根据用户界面图像确定所述背光开启区域。
  14. 如权利要求13所述的装置，其特征在于，
    所述区域确定单元，具体用于在所述显示屏用于显示指定用户界面时，将所 述显示屏用于显示所述指定用户界面中指定用户界面元素区域作为所述背光开启区域。
  15. 如权利要求9至14任一项所述的装置，其特征在于，所述装置还包括：
    色度校正单元，用于根据所述指定光源校正背光开启区域所显示图像的色度。
  16. 如权利要求15所述的装置，其特征在于，所述校正单元包括：
    基准亮度获取子单元，用于获取基准亮度值；
    色度调整子单元，用于根据所述基准亮度值调整所述背光开启区域各个子区域所显示图像的色度。
  17. 一种终端，其特征在于，包括：处理器及显示屏；
    所述处理器，用于确定所述显示屏的背光开启区域；根据所述背光开启区域确定需要点亮的指定光源；点亮所述指定光源。
  18. 如权利要求17所述的终端，其特征在于，
    所述处理器，具体用于根据所述显示屏与物体的接触状况确定所述背光开启区域。
  19. 如权利要求18所述的终端，其特征在于，
    所述处理器，具体用于确定所述显示屏与物体相接处的接触区域；以及在所述接触区域的面积与所述显示屏的面积之比大于或等于阈值时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
  20. 如权利要求18所述的终端，其特征在于，
    所述处理器，具体用于确定所述显示屏与物体相接处的接触区域；以及在所述接触区域在第一时长内未发生变化时，将所述显示屏除所述接触区域之外的区域作为所述背光开启区域。
  21. 如权利要求17所述的装置，其特征在于，
    所述处理器，具体用于根据用户界面图像确定所述背光开启区域。
  22. 如权利要求21所述的装置，其特征在于，
    所述处理器，具体用于在所述显示屏用于显示指定用户界面时，将所述显示屏用于显示所述指定用户界面中指定用户界面元素区域作为所述背光开启区域。
  23. 如权利要求17至22任一项所述的装置，其特征在于，
    所述处理器，还用于根据所述指定光源校正背光开启区域所显示图像的色度。
  24. 如权利要求23所述的装置，其特征在于，
    所述处理器，具体用于获取基准亮度值；根据所述基准亮度值调整所述背光开启区域各个子区域所显示图像的色度。
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