WO2022002208A1 - 动态背光控制方法、动态背光模组及存储介质 - Google Patents

动态背光控制方法、动态背光模组及存储介质 Download PDF

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Publication number
WO2022002208A1
WO2022002208A1 PCT/CN2021/104059 CN2021104059W WO2022002208A1 WO 2022002208 A1 WO2022002208 A1 WO 2022002208A1 CN 2021104059 W CN2021104059 W CN 2021104059W WO 2022002208 A1 WO2022002208 A1 WO 2022002208A1
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WIPO (PCT)
Prior art keywords
blue
chip
signal
chips
dynamic backlight
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Ceased
Application number
PCT/CN2021/104059
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English (en)
French (fr)
Inventor
杨宇琦
刘金龙
李健林
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Huizhou Vision New Technology Co Ltd
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Huizhou Vision New Technology Co Ltd
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Priority to EP21832799.7A priority Critical patent/EP4177878A4/en
Priority to US18/003,902 priority patent/US12131709B2/en
Publication of WO2022002208A1 publication Critical patent/WO2022002208A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • G09G3/3413—Details of control of colour illumination sources
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133603—Direct backlight with LEDs
    • 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
    • G09G2320/0242—Compensation of deficiencies in the appearance of colours
    • 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
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0666—Adjustment of display parameters for control of colour parameters, e.g. colour temperature

Definitions

  • the present application relates to the field of computer technology, and in particular, to a dynamic backlight control method, a dynamic backlight module and a storage medium.
  • the backlight mode of the LCD screen includes static backlight and color dynamic backlight, and color dynamic backlight includes blue-green dynamic backlight, red, green, and blue RGB dynamic backlight.
  • static backlight means that the backlight is white;
  • color dynamic backlight means that different color chips are used together to emit light (sometimes phosphors are also used).
  • the color dynamic backlight can guarantee the blue point color purity compared with the static backlight.
  • the main purpose of the embodiments of the present application is to provide a dynamic backlight control method, a dynamic backlight module and a storage medium, which aim to solve the problem that the blue field brightness is reduced in the dynamic backlight while ensuring the blue point color purity.
  • an embodiment of the present application proposes a dynamic backlight control method, the dynamic backlight control method is applied to a dynamic backlight module, and the lamp beads of the dynamic backlight module include a green chip and at least two blue chips,
  • the dynamic backlight control method includes:
  • the green chip When the source signal is a pure blue signal, the green chip is turned off, and more than two blue chips are driven to output blue light.
  • the lamp beads of the dynamic backlight module further include red phosphors
  • the red phosphor includes at least one of nitride, fluoride and silicate.
  • the lamp beads of the dynamic backlight module include at least three blue chips,
  • the steps of turning off the green chip and driving two or more blue chips to output blue light include:
  • the source signal is a pure blue signal
  • obtain brightness demand information according to the pure blue signal and determine a first driving number of blue chips according to the brightness demand information, where the first driving number is two or more ;
  • the green chips are turned off, and a corresponding number of blue chips are driven to output blue light according to the first driving number.
  • the lamp beads of the dynamic backlight module include at least three blue chips,
  • the steps of turning off the green chip and driving two or more blue chips to output blue light include:
  • the source signal is a pure blue signal
  • obtain the first receiving time for receiving the pure blue signal and determine the second driving quantity of the blue chip according to the first receiving time, and the second driving quantity is more than two;
  • the green chips are turned off, and a corresponding number of blue chips are driven to output blue light according to the second driving number.
  • step of receiving the source signal further comprising:
  • the source signal is a mixed color signal
  • the target chip is driven to output blue light, and other blue chips other than the target chip are turned off.
  • the step of determining a target chip from each blue chip includes:
  • the source signal is a mixed color signal
  • the accumulated usage time of each blue chip is acquired, and a target chip is determined from each blue chip according to the accumulated usage time of each blue chip.
  • the step of determining a target chip from each blue chip includes:
  • the source signal is a color-mixing signal
  • a second receiving time for receiving the color-mixing signal is acquired, and a target chip is determined from each blue chip according to the second receiving time.
  • an embodiment of the present application further proposes a dynamic backlight module
  • the lamp beads of the dynamic backlight module include a green chip and at least two blue chips
  • the dynamic backlight module further includes a processor and a memory , the memory stores a computer program, and when the computer program is executed by the processor, the steps of the dynamic backlight control method described above are implemented.
  • an embodiment of the present application further provides a display device, where the display device includes the dynamic backlight module as described above.
  • a green chip and two or more blue chips are arranged in the lamp beads of the dynamic backlight module.
  • the obtained signal source signal is a pure blue signal
  • the green chip is turned off, and more than two blue chips are driven.
  • the overall brightness of the blue field can be improved; and the actual blue light composition has not changed, and the color coordinates will not be deviated due to the increase in brightness, thus ensuring the blue point. color purity.
  • FIG. 2 is a schematic flowchart of the first embodiment of the dynamic backlight control method of the present application
  • FIG. 3 is a schematic diagram of a blue-green dynamic backlight module lamp bead involved in the first embodiment of the dynamic backlight control method of the present application.
  • the directional indications are only used to explain that under a certain posture If the relative positional relationship, movement situation, etc. of the components changes, if the specific posture changes, the directional indication also changes accordingly.
  • FIG. 1 is a schematic diagram of the structure of a dynamic backlight module according to an embodiment of the present application.
  • the dynamic backlight module includes a processor 1001 (for example, a central processing unit, Central Processing Unit, CPU), a communication bus 1002 , and a memory 1003 .
  • the communication bus 1002 is used to realize the connection and communication between these components;
  • the memory 1003 may be a high-speed random access memory (RAM), or a stable memory (non-volatile memory), such as a disk memory,
  • the memory 1003 may also be a storage device independent of the aforementioned processor 1001 .
  • the dynamic backlight module includes lamp beads, and each lamp bead includes a green chip and more than two blue chips (not shown in FIG. 1 ) to output corresponding pure color light.
  • each lamp bead includes a green chip and more than two blue chips (not shown in FIG. 1 ) to output corresponding pure color light.
  • the memory 1003 as a readable storage medium in FIG. 1 may include an operating system and a computer program.
  • the processor 1001 can call the computer program stored in the memory 1003, and implement the dynamic backlight control method of the embodiment of the present application.
  • the embodiment of the present application provides a dynamic backlight control method.
  • FIG. 2 is a schematic flowchart of the first embodiment of the dynamic backlight control method of the present application.
  • the dynamic backlight control method is applied to a dynamic backlight module, the dynamic backlight module includes a green chip and at least two blue chips, the dynamic backlight module and the liquid crystal switch of the liquid crystal glass color resistance layer connected, the dynamic backlight control includes the following steps:
  • Step S10 receiving a source signal
  • the backlight mode of the LCD screen includes static backlight and color dynamic backlight, and color dynamic backlight includes blue-green dynamic backlight, red, green, and blue RGB dynamic backlight.
  • static backlight means that the backlight is white
  • color dynamic backlight means that different color chips are used together to emit light.
  • the red, green, and blue RGB dynamic backlight uses three chips of red, green, and blue together, and each color chip can independently drive and output the corresponding color light
  • the blue-green dynamic backlight uses two chips of blue and green, and used together
  • the red phosphor powder and the blue and green chips can independently drive and output the corresponding color light.
  • the red phosphor includes at least one of nitride, fluoride (KSF) and silicate, and of course other types of red phosphor are also possible.
  • KSF fluoride
  • the blue field signal needs to be output, for the static backlight, due to the wide passband range of the blue-green filter, when only the blue liquid crystal switch is turned on, the green light in the static backlight will also pass through the Blue pixel output, resulting in blue-green crosstalk; and for color dynamic backlight, only the blue chip is driven in the backlight, and the green chip is turned off, there is no blue-green crosstalk, and the purity of the blue field color point is improved, thereby improving the whole machine.
  • Table 1 is the color field brightness comparison table of the static backlight and the blue-green dynamic backlight:
  • Table 1 Color field brightness comparison table of static backlight and blue-green dynamic backlight
  • the present embodiment proposes a dynamic backlight control method.
  • a green chip and two or more blue chips are arranged in the lamp beads of the dynamic backlight module.
  • the green chip drives more than two blue chips to output blue light. Since multiple blue chips jointly output blue light, the overall brightness of the blue field can be improved; and the actual blue light composition has not changed, and will not be affected by the increase in brightness. As a result, the color coordinates are deviated, thereby ensuring the color purity of the blue point.
  • the dynamic backlight control method of this embodiment is applied to a dynamic backlight module.
  • the dynamic backlight module may be disposed on a liquid crystal display screen, and the blue-green dynamic backlight module is taken as an example for description.
  • the lamp beads of the traditional blue-green dynamic backlight module are composed of a green chip, a blue chip and red phosphor to emit light; in this embodiment, the lamp beads of the blue-green dynamic backlight module are There are more than two blue chips (here "above” includes the number, the same below), while the green chip is kept as one (of course, it can also be set as more than two), and red phosphors are provided, for the convenience of description , the lamp beads of the blue-green dynamic backlight module in this embodiment are described by taking two blue chips as an example, and the red phosphor is KSF phosphor; Schematic diagram of the blue-green dynamic backlight module lamp bead.
  • the lamp bead of the blue-green dynamic backlight module includes two blue chips and one green chip, and also includes KSF phosphors (not shown in the figure); each chip can be driven independently to Output the corresponding color light.
  • the placement of the chips may be set according to the actual situation, and the placement manner of FIG. 3 does not constitute a limitation on this solution.
  • the blue-green dynamic backlight module after the blue-green dynamic backlight module is activated, it will receive a source signal, and the source signal is triggered based on the image to be displayed on the LCD screen; when the source signal is obtained, the source signal can be determined. According to the type of the source signal, it can be determined whether to drive/close each chip.
  • Step S20 when the source signal is a pure blue signal, the green chip is turned off, and more than two blue chips are driven to output blue light.
  • the blue-green dynamic backlight module when the type of the source signal is a pure blue signal, it can be determined that the display screen is to display a blue field picture.
  • the blue-green dynamic backlight module will turn off the green chip, stop the green light output of the green chip, and avoid the occurrence of blue-green crosstalk; at the same time, more than two blue chips are driven to output blue light.
  • the blue light that normally participates in color-light mixing has an 8-bit gray scale, in the case of non-pure blue field, only one blue chip can be driven; in the pure blue field, the maximum gray scale can reach 24 bits, so it can be seen that at least an additional one is required.
  • the blue chip compensates for the brightness of the pure blue field, and the blue light is jointly output by multiple blue chips, so that the overall brightness of the blue field can be improved, and the actual blue light component has not changed, and the color coordinates will not be deviated due to the increase in brightness. , thus ensuring the blue point color purity.
  • the lamp beads of the dynamic backlight module include at least three blue chips
  • step S20 includes:
  • Step A21 when the source signal is a pure blue signal, obtain brightness demand information according to the pure blue signal, and determine the first driving number of the blue chip according to the brightness demand information, where the first driving number is: more than two;
  • the lamp beads of the dynamic backlight module include at least three blue chips.
  • the compensation of the blue field brightness can be achieved by two blue chips.
  • a higher blue field brightness can be required.
  • the user can set the brightness requirement of the blue field through a remote control or other device, and when a pure blue signal is triggered, the pure blue signal includes brightness requirement information.
  • the dynamic backlight module obtains the pure blue signal, it will obtain the brightness demand information according to the pure blue signal, and determine the first driving number of the blue chip according to the brightness demand information.
  • the color chip outputs blue light.
  • the number of the first drivers is more than two, otherwise the blue field brightness cannot be guaranteed.
  • Step A22 Turn off the green chips, and drive a corresponding number of blue chips to output blue light according to the first driving number.
  • the green chip when the first driving number is determined, the green chip will be turned off, the green light output of the green chip will be stopped, and a corresponding number of blue chips will be driven to output blue light according to the first driving number.
  • the lamp beads of the dynamic backlight module include at least three blue chips and one green chip.
  • the first driving number is two, the green chip can be turned off, the two blue chips can be driven to output blue light, and the other blue chip can be driven. Can be closed.
  • a corresponding number of blue chips can be driven to output blue light according to the brightness requirements, and on the basis of ensuring the brightness of the blue field, different brightness requirements can also be met.
  • the lamp beads of the dynamic backlight module include at least three blue chips
  • step S20 includes:
  • Step A23 when the source signal is a pure blue signal, obtain the first receiving time for receiving the pure blue signal, and determine the second driving quantity of the blue chip according to the first receiving time, and the second The number of drivers is more than two;
  • the lamp beads of the dynamic backlight module include at least three blue chips.
  • the compensation of the blue field brightness can be achieved by two blue chips.
  • a higher blue field brightness can be required.
  • different blue field brightness requirements can be set for different time periods, and different brightness requirements correspond to different numbers of blue chip drivers. For example, from 20 o'clock in the evening to 6 o'clock in the next day, the blue field brightness requirements are higher. , at least three blue chips need to be driven, and from 6:00 in the day to 20:00 in the evening, the demand for blue field brightness is relatively low, and two blue chips can be driven.
  • the corresponding relationship between the time period and the number of blue chips can be preset.
  • the first receiving time of receiving the pure blue signal will be obtained, and then determined according to the corresponding relationship between the first receiving time and the setting.
  • the second driving quantity of the blue chip can be used to determine how many blue chips to drive to output blue light subsequently.
  • the second driving quantity is more than two, otherwise the blue field brightness cannot be guaranteed.
  • Step A24 Turn off the green chips, and drive a corresponding number of blue chips to output blue light according to the second driving number.
  • the green chip when the first driving number is determined, the green chip will be turned off, the green light output of the green chip will be stopped, and a corresponding number of blue chips will be driven to output blue light according to the first driving number.
  • the lamp beads of the dynamic backlight module include at least three blue chips and one green chip. If the second driving number is two, the green chip can be turned off, the two blue chips can be driven to output blue light, and the other blue chip can be driven. Can be closed.
  • this embodiment can drive a corresponding number of blue chips to output blue light according to the receiving time of the pure blue signal, and on the basis of ensuring the brightness of the blue field, it can also meet the brightness requirements at different times.
  • step S10 after the step S10, it further includes:
  • Step A40 when the source signal is a color mixing signal, determine a target chip from each blue chip;
  • the type of the source signal when the type of the source signal is a color-mixing signal, it can be determined that the display screen is to display a color-mixing picture, that is, blue light is mixed with light of other colors; When mixing, it can be considered that the brightness of the blue light will be compensated by other color lights, so it is enough to drive a blue chip to output blue light.
  • a target chip when the type of the source signal is a mixed-color signal, a target chip can be determined from each blue chip, and the determination process can be implemented in different ways, for example, one can be randomly selected from each blue chip.
  • the blue chip is determined as the target chip, or the target chip is determined according to the accumulated usage time of each blue chip, or the target chip is determined according to the receiving time of the mixed color signal, and the like.
  • step A40 includes:
  • Step A41 when the source signal is a mixed color signal, obtain the accumulated usage time of each blue chip, and determine a target chip from each blue chip according to the accumulated usage time of each blue chip.
  • the target chip may be determined according to the accumulated usage time of each blue chip. Specifically, the accumulated usage time of each blue chip may be obtained, and then, according to the accumulated usage time of each blue chip, a blue chip with the shortest accumulated usage time is selected from the blue chips as a target chip. In this way, the usage time of each blue chip can be balanced to avoid excessive loss of a certain blue chip.
  • step A40 also includes:
  • Step A42 when the source signal is a color mixing signal, obtain a second receiving time for receiving the color mixing signal, and determine a target chip from each blue chip according to the second receiving time.
  • the target chip can also be determined according to the receiving time of the mixed color signal. Specifically, the corresponding relationship between the time period and each blue chip can be set, that is, which blue chip is used as the target chip for each time period is preset.
  • the dynamic backlight module includes three blue chips , denoted as B1, B2 and B3 respectively, of which 0:00 to 8:00 correspond to B1 (that is, use B1 as the target chip during this time period), and 8:00 to 16:00 correspond to B2 (that is, during this time period Take B2 as the target chip), 16:00 to 24:00 corresponds to B3 (that is, take B3 as the target chip during this time period).
  • the second receiving time of receiving the pure blue signal will be obtained, and then the target chip will be determined from each blue chip according to the corresponding relationship between the second receiving time and the setting. If the mixed color signal is received at 18:00, then B3 can be determined as the target chip. In this way, different blue chips can be determined as target chips in different time periods, which is beneficial to balance the allocation of the usage periods of each blue chip and avoid excessive loss of a certain blue chip.
  • the target chip may also be determined in other ways.
  • Step A50 driving the target chip to output blue light, and turning off other blue chips other than the target chip.
  • the target chip when the target chip is determined, the target chip can be driven to output blue light, and the blue chips other than the target chip can be turned off.
  • the blue chips other than the target chip can be turned off.
  • they can be driven or turned off according to the specific type of the color mixing signal.
  • the obtained source signal is a color mixing signal
  • one of the blue chips can be selected as the target chip, and the target chip can be driven to output blue light, so as to meet the needs of color mixing.
  • an embodiment of the present application further provides a display device, and the display device includes the dynamic backlight module of the above-mentioned embodiment.
  • the specific functions of the display device and the implemented method may refer to the various embodiments of the dynamic backlight control method of the present application, which will not be repeated here.
  • an embodiment of the present application further provides a storage medium.
  • a computer program is stored on the storage medium of the present application, wherein when the computer program is executed by the processor, the steps of the dynamic backlight control method described above are implemented.

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Abstract

一种动态背光控制方法、动态背光模组及存储介质，动态背光模组的灯珠包括绿色芯片和至少两个蓝色芯片，动态背光控制方法包括：接收信源信号；当信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光。

Description

动态背光控制方法、动态背光模组及存储介质
本申请要求于2020年07月01日提交中国专利局、申请号为202010625653.4、发明名称为“动态背光控制方法、动态背光模组、显示装置及存储介质”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及计算机技术领域，特别涉及一种动态背光控制方法、动态背光模组及存储介质。
 背景技术
液晶显示屏的背光方式包括静态背光和彩色动态背光，而彩色动态背光又包括蓝绿动态背光、红绿蓝RGB动态背光等。其中，静态背光是指背光为白色；彩色动态背光是将不同颜色芯片配合使用进行发光（有时候还会使用荧光粉）。
在需要输出蓝场信号时，彩色动态背光与静态背光相比，可以保证蓝点色纯度。
 技术问题
本申请实施例的主要目的是提供一种动态背光控制方法、动态背光模组及存储介质，旨在解决动态背光在保证蓝点色纯度的情况下蓝场亮度降低的问题。
 技术解决方案
第一方面，本申请实施例提出了一种动态背光控制方法，所述动态背光控制方法应用于动态背光模组，所述动态背光模组的灯珠包括绿色芯片和至少两个蓝色芯片，所述动态背光控制方法包括：
接收信源信号；
当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光。
可选地，所述动态背光模组的灯珠还包括红色荧光粉，
所述红色荧光粉包括氮化物、氟化物和硅酸盐中的至少一种。
可选地，所述动态背光模组的灯珠包括至少三个蓝色芯片，
相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
当所述信源信号为纯蓝信号时，根据所述纯蓝信号获取亮度需求信息，并根据所述亮度需求信息确定蓝色芯片的第一驱动数量，所述第一驱动数量为两个以上；
关闭绿色芯片，并根据所述第一驱动数量驱动对应数量的蓝色芯片输出蓝光。
可选地，所述动态背光模组的灯珠包括至少三个蓝色芯片，
相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
当所述信源信号为纯蓝信号时，获取接收所述纯蓝信号的第一接收时间，并根据所述第一接收时间确定蓝色芯片的第二驱动数量，所述第二驱动数量为两个以上；
关闭绿色芯片，并根据所述第二驱动数量驱动对应数量的蓝色芯片输出蓝光。
可选地，所述接收信源信号的步骤之后，还包括：
当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片；
驱动所述目标芯片输出蓝光，并关闭所述目标芯片之外的其它蓝色芯片。
可选地，所述当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片的步骤包括：
当所述信源信号为混色信号时，获取各蓝色芯片的累计使用时长，并根据各蓝色芯片的累计使用时长从各蓝色芯片中确定一个目标芯片。
可选地，所述当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片的步骤包括：
当所述信源信号为混色信号时，获取接收所述混色信号的第二接收时间，并根据所述第二接收时间从各蓝色芯片中确定一个目标芯片。
第二方面，本申请实施例还提出了一种动态背光模组，所述动态背光模组的灯珠包括绿色芯片和至少两个蓝色芯片，所述动态背光模组还包括处理器、存储器，所述存储器存储有计算机程序，所述计算机程序被处理器执行时实现如上述的动态背光控制方法的步骤。
第三方面，本申请实施例还提出了一种显示装置，所述显示装置包括如上述的动态背光模组。
 有益效果
本申请实施例在动态背光模组的灯珠中设置绿色芯片和两个以上的蓝色芯片，当获取到的信源信号为纯蓝信号时，关闭绿色芯片，驱动两个以上的蓝色芯片输出蓝光，由于是多个蓝色芯片共同输出蓝光，从而可以提高蓝场的整体亮度；而且实际的蓝光成分并没有发生改变，不会因亮度的提升而导致色坐标偏离，从而保证了蓝点色纯度。
 附图说明
图1为本申请实施例方案涉及的动态背光模组结构示意图；
图2为本申请动态背光控制方法第一实施例的流程示意图；
图3为本申请动态背光控制方法第一实施例涉及的蓝绿动态背光模组灯珠示意图。
本申请目的的实现、功能特点及优点将结合实施例，参照附图做进一步说明。
 本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整的描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，若本申请实施例中有涉及方向性指示（诸如上、下、左、右、前、后......），则该方向性指示仅用于解释在某一特定姿态下个部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
本申请实施例涉及的动态背光控制方法应用于动态背光模组，该动态背光模组可以是设置于显示屏。参照图1，图1为本申请实施例方案中动态背光模组架构示意图。本申请实施例中，动态背光模组包括处理器1001（例如中央处理器Central Processing Unit，CPU），通信总线1002，存储器1003。其中，通信总线1002用于实现这些组件之间的连接通信；存储器1003可以是高速随机存取存储器（random access memory，RAM），也可以是稳定的存储器（non-volatile memory），例如磁盘存储器，存储器1003可选的还可以是独立于前述处理器1001的存储装置。此外，动态背光模组包括有灯珠，每个灯珠包括绿色芯片和两个以上的蓝色芯片（图1中未示出），用以输出对应的纯色光。当然，本领域技术人员可以理解，图1中示出的硬件结构并不构成对本申请的限定。
继续参照图1，图1中作为一种可读存储介质的存储器1003可以包括操作系统以及计算机程序。处理器1001可以调用存储器1003中存储的计算机程序，并实现本申请实施例的动态背光控制方法。
本申请实施例提供了一种动态背光控制方法。
参照图2，图2为本申请动态背光控制方法第一实施例的流程示意图。
本实施例中，所述动态背光控制方法应用于动态背光模组，所述动态背光模组包括绿色芯片和至少两个蓝色芯片，所述动态背光模组与液晶玻璃色阻层的液晶开关连接，所述动态背光控制包括以下步骤：
步骤S10，接收信源信号；
液晶显示屏的背光方式包括静态背光和彩色动态背光，而彩色动态背光又包括蓝绿动态背光、红绿蓝RGB动态背光等。其中，静态背光是指背光为白色；彩色动态背光是将不同颜色芯片配合使用进行发光。例如，红绿蓝RGB动态背光是将红、绿、蓝三种芯片配合使用，每种颜色的芯片可独立驱动输出对应的色光；蓝绿动态背光则是蓝、绿两种芯片，并配合使用红色荧光粉，蓝绿芯片可独立驱动输出对应的色光。其中，红色荧光粉包括氮化物、氟化物（KSF）和硅酸盐中的至少一种，当然也可以是其它类型的红色荧光粉。在需要输出蓝场信号时，对静态背光而言，由于蓝绿滤光片的通带范围较广，这就会导致只打开蓝色液晶开关时，静态背光中的绿光也会透过该蓝色像素输出，从而出现蓝绿串扰；而于彩色动态背光而言，背光中只驱动蓝色芯片，绿色芯片关闭，不存在蓝绿串扰，蓝场色点纯度因此提升，进而提升了整机色域，但是由于绿光被抑制，而人眼对绿光又较为敏感，因此对用户而言亮度会有所降低，从而影响了用户观感。具体的，以蓝绿动态背光为例，如表1所示，表1为静态背光和蓝绿动态背光的色场亮度对比表：
表1 静态背光和蓝绿动态背光的色场亮度对比表
  红场亮度 绿场亮度 蓝场亮度 混合色场亮度
静态背光 145.07 381.53 85.512 621.29
蓝绿动态背光 141.65 368.52 23.845 534.015
亮度差异 2.36% 3.41% 72.12% 14.05%
通过表1可知，在蓝场下，蓝绿动态背光与静态背光相比，蓝场亮度明显下降。对此，本实施例提出一种动态背光控制方法，在动态背光模组的灯珠中设置有绿色芯片和两个以上的蓝色芯片，当获取到的信源信号为纯蓝信号时，关闭绿色芯片，驱动两个以上的蓝色芯片输出蓝光，由于是多个蓝色芯片共同输出蓝光，从而可以提高蓝场的整体亮度；而且实际的蓝光成分并没有发生改变，不会因亮度的提升而导致色坐标偏离，从而保证了蓝点色纯度。
本实施例的动态背光控制方法应用于动态背光模组，该动态背光模组可以是设置于液晶显示屏，且以蓝绿动态背光模组为例进行说明。值得注意的是，传统的蓝绿动态背光模组的灯珠由一个绿色芯片、一个蓝色芯片和红色荧光粉的方式配合发光；本实施例中，蓝绿动态背光模组的灯珠则是设置了两个以上（此处“以上”包括本数，下同）的蓝色芯片，而绿色芯片保持为一个（当然也可以是设置为两个以上），并设置有红色荧光粉，为说明方便，本实施例中的蓝绿动态背光模组的灯珠以两个蓝色芯片为例进行说明，而红色荧光粉则采用KSF荧光粉；具体可参见图3，图3为本实施例涉及的蓝绿动态背光模组灯珠示意图，蓝绿动态背光模组的灯珠包括两个蓝色芯片和一个绿色芯片，还包括有KSF荧光粉（图中未示出）；各芯片可独立驱动以输出对应的色光。芯片的摆放可以是根据实际情况进行设置，图3的摆放方式并不构成对本方案的限制。
本实施例中，蓝绿动态背光模组启动后，将会接收信源信号，该信源信号是基于液晶显示屏将要显示的图像而触发的；在得到信源信号时，可确定信源信号的类型，根据信源信号的类型可确定是否驱动/关闭各芯片。
步骤S20，当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光。
本实施例中，当信源信号的类型为纯蓝信号时，可确定显示屏是要显示蓝场画面。根据该纯蓝信号，蓝绿动态背光模组将关闭绿色芯片，停止绿色芯片的绿光输出，避免发生蓝绿串扰的情况；同时驱动两个以上的蓝色芯片输出蓝光。若正常参与色光混合的蓝光有8bit的灰阶，在非纯蓝场的情况下，只驱动一个蓝色芯片即可；在纯蓝场下最大灰阶可达24bit，可见至少需额外使用多一个蓝色芯片来补偿纯蓝场亮度，通过多个蓝色芯片共同输出蓝光，从而可以提高蓝场的整体亮度，而且实际的蓝光成分并没有发生改变，不会因亮度的提升而导致色坐标偏离，从而保证了蓝点色纯度。
基于上述动态背光控制方法第一实施例，提出本申请动态背光控制方法第二实施例。
本实施例中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
相应的，所述步骤S20包括：
步骤A21，当所述信源信号为纯蓝信号时，根据所述纯蓝信号获取亮度需求信息，并根据所述亮度需求信息确定蓝色芯片的第一驱动数量，所述第一驱动数量为两个以上；
本实施例中，动态背光模组的灯珠包括至少三个蓝色芯片。一般而言，通过两个蓝色芯片即可实现蓝场亮度的补偿，当然在实际中，可以要求更高的蓝场亮度。具体的，用户可通过遥控器或其它设备设置蓝场的亮度需求，当触发纯蓝信号时，该纯蓝信号中包括有亮度需求信息。动态背光模组在获取到纯蓝信号时，将根据纯蓝信号获取亮度需求信息，并根据亮度需求信息确定蓝色芯片的第一驱动数量，通过第一驱动数量可确定后续要驱动多少个蓝色芯片输出蓝光，当然该第一驱动数量为两个以上，否则将无法保证蓝场亮度。
步骤A22，关闭绿色芯片，并根据所述第一驱动数量驱动对应数量的蓝色芯片输出蓝光。
本实施例中，当确定第一驱动数量时，将关闭绿色芯片，停止绿色芯片的绿光输出，并根据第一驱动数量驱动对应数量的蓝色芯片输出蓝光。例如，动态背光模组的灯珠包括至少三个蓝色芯片和一个绿色芯片，第一驱动数量为二，则可关闭绿色芯片，驱动两个的蓝色芯片输出蓝光，而另外一个蓝色芯片可关闭。
通过上述方式，本实施例可根据亮度需求驱动对应数量的蓝色芯片输出蓝光，在保证蓝场亮度的基础上，还可满足不同的亮度需求。
基于上述动态背光控制方法第一实施例，提出本申请动态背光控制方法第三实施例。
本实施例中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
相应的，所述步骤S20包括：
步骤A23，当所述信源信号为纯蓝信号时，获取接收所述纯蓝信号的第一接收时间，并根据所述第一接收时间确定蓝色芯片的第二驱动数量，所述第二驱动数量为两个以上；
本实施例中，动态背光模组的灯珠包括至少三个蓝色芯片。一般而言，通过两个蓝色芯片即可实现蓝场亮度的补偿，当然在实际中，可以要求更高的蓝场亮度。具体的，对于不同的时间段可以设置不同的蓝场亮度需求，不同的亮度需求对应了不同的蓝色芯片驱动数量，例如在晚上20点到第二天白天6点，蓝场亮度需求更高，至少需要驱动三个蓝色芯片，而在白天6点到晚上20点，蓝场亮度需求相对不高，驱动两个蓝色芯片即可。对此，可预先设置时间段与蓝色芯片驱动数量的对应关系，当接收到纯蓝信号时，将获取接收纯蓝信号的第一接收时间，然后根据第一接收时间和设置的对应关系确定蓝色芯片的第二驱动数量，通过第二驱动数量可确定后续要驱动多少个蓝色芯片输出蓝光，当然该第二驱动数量为两个以上，否则将无法保证蓝场亮度。
步骤A24，关闭绿色芯片，并根据所述第二驱动数量驱动对应数量的蓝色芯片输出蓝光。
本实施例中，当确定第一驱动数量时，将关闭绿色芯片，停止绿色芯片的绿光输出，并根据第一驱动数量驱动对应数量的蓝色芯片输出蓝光。例如，动态背光模组的灯珠包括至少三个蓝色芯片和一个绿色芯片，第二驱动数量为二，则可关闭绿色芯片，驱动两个的蓝色芯片输出蓝光，而另外一个蓝色芯片可关闭。
通过上述方式，本实施例可根据纯蓝信号的接收时间驱动对应数量的蓝色芯片输出蓝光，在保证蓝场亮度的基础上，还可满足不同时间的亮度需求。
基于上述动态背光控制方法第一实施例，提出本申请动态背光控制方法第四实施例。
本实施例中，所述步骤S10之后，还包括：
步骤A40，当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片；
本实施例中，当信源信号的类型为混色信号时，可确定显示屏是要显示混色画面，也即是蓝色光与其它颜色的光进行混合；而在将蓝色光与其它颜色的光进行混合时，可认为蓝色光的亮度将得到了其它色光的补偿，因此驱动一个蓝色芯片输出蓝光即可。对此，当信源信号的类型为混色信号时，可从各蓝色芯片中确定一个目标芯片，该确定的过程可以是通过不同的方式实现，例如可以是从各蓝色芯片中随机选取一个蓝色芯片确定为目标芯片，又或者是根据各蓝色芯片的累计使用时长确定目标芯片，又或者是根据混色信号的接收时间确定目标芯片等。
进一步的，所述步骤A40包括：
步骤A41，当所述信源信号为混色信号时，获取各蓝色芯片的累计使用时长，并根据各蓝色芯片的累计使用时长从各蓝色芯片中确定一个目标芯片。
当信源信号的类型为混色信号时，可以是根据各蓝色芯片的累计使用时长确定目标芯片。具体的，可获取各蓝色芯片的累计使用时长，然后根据各蓝色芯片的累计使用时长从各蓝色芯片中选择累计使用时长最短的一个蓝色芯片作为目标芯片。通过这样的方式，可以平衡各蓝色芯片的使用时长，避免某一个蓝色芯片过度损耗。
进一步的，所述步骤A40还包括：
步骤A42，当所述信源信号为混色信号时，获取接收所述混色信号的第二接收时间，并根据所述第二接收时间从各蓝色芯片中确定一个目标芯片。
当信源信号的类型为混色信号时，还可以根据混色信号的接收时间确定目标芯片。具体的，可以设置时间段与各蓝色芯片之间的对应关系，也即预先设置好每个时间段是将哪一个蓝色芯片作为目标芯片，例如，动态背光模组包括三个蓝色芯片，分别记为B1、B2和B3，其中0点到8点是与B1对应（即在这个时间段时将B1作为目标芯片），8点到16点是与B2对应（即在这个时间段时将B2作为目标芯片），16点到24点是与B3对应（即在这个时间段时将B3作为目标芯片）。当接收到混色信号时，将获取接收纯蓝信号的第二接收时间，然后根据第二接收时间和设置的对应关系从各蓝色芯片中确定目标芯片，如是在18点接收到混色信号，则可将B3确定为目标芯片。通过这样的方式，可以在不同的时间段将不同的蓝色芯片确定为目标芯片，有利于平衡分配各蓝色芯片的使用时段，避免某一个蓝色芯片过度损耗。
当然，除了上述举例外，还可以是通过其它方式确定目标芯片。
步骤A50，驱动所述目标芯片输出蓝光，并关闭所述目标芯片之外的其它蓝色芯片。
本实施例中，当确定目标芯片时，可驱动该目标芯片输出蓝光，并关闭目标芯片以外的蓝色芯片。当然，对于其他颜色的芯片，可根据混色信号的具体类型，对其进行驱动或关闭。
通过上述方式，在获取到的信源信号为混色信号时，可从各蓝色芯片中选择一个作为目标芯片，并驱动目标芯片输出蓝光，从而满足混色需要。
此外，本申请实施例还提供一种显示装置，所述显示装置包括如上述实施例的动态背光模组。
其中，显示装置的具体功能和所实现的方法可参照本申请动态背光控制方法的各个实施例，此处不再赘述。
此外，本申请实施例还提供一种存储介质。
本申请存储介质上存储有计算机程序，其中所述计算机程序被处理器执行时，实现如上述的动态背光控制方法的步骤。
其中，计算机程序被执行时所实现的方法可参照本申请动态背光控制方法的各个实施例，此处不再赘述。
上述本申请实施例序号仅仅为了描述，不代表实施例的优劣。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本申请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，该计算机软件产品存储在如上所述的一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本申请各个实施例所述的方法。
以上所述仅为本申请的优选实施例，并非因此限制本申请的专利范围，凡是在本申请的构思下，利用本申请说明书及附图内容所作的等效结构变换，或直接/间接运用在其他相关的技术领域均包括在本申请的专利保护范围内。

Claims (20)

  1. 一种动态背光控制方法，其中，所述动态背光控制方法应用于动态背光模组，所述动态背光模组的灯珠包括绿色芯片和至少两个蓝色芯片，所述动态背光控制方法包括：
    接收信源信号；
    当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光。
  2. 如权利要求1所述的动态背光控制方法，其中，所述动态背光模组的灯珠还包括红色荧光粉，所述红色荧光粉包括氮化物、氟化物和硅酸盐中的至少一种。
  3. 如权利要求1所述的动态背光控制方法，其中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
    相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
    当所述信源信号为纯蓝信号时，根据所述纯蓝信号获取亮度需求信息，并根据所述亮度需求信息确定蓝色芯片的第一驱动数量，所述第一驱动数量为两个以上；
    关闭绿色芯片，并根据所述第一驱动数量驱动对应数量的蓝色芯片输出蓝光。
  4. 如权利要求1所述的动态背光控制方法，其中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
    相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
    当所述信源信号为纯蓝信号时，获取接收所述纯蓝信号的第一接收时间，并根据所述第一接收时间确定蓝色芯片的第二驱动数量，所述第二驱动数量为两个以上；
    关闭绿色芯片，并根据所述第二驱动数量驱动对应数量的蓝色芯片输出蓝光。
  5. 如权利要求1所述的动态背光控制方法，其中，所述接收信源信号的步骤之后，还包括：
    当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片；
    驱动所述目标芯片输出蓝光，并关闭所述目标芯片之外的其它蓝色芯片。
  6. 如权利要求5所述的动态背光控制方法，其中，所述当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片的步骤包括：
    当所述信源信号为混色信号时，获取各蓝色芯片的累计使用时长，并根据各蓝色芯片的累计使用时长从各蓝色芯片中确定一个目标芯片。
  7. 如权利要求6所述的动态背光控制方法，其中，所述当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片的步骤包括：
    当所述信源信号为混色信号时，获取接收所述混色信号的第二接收时间，并根据所述第二接收时间从各蓝色芯片中确定一个目标芯片。
  8. 一种动态背光模组，其中，所述动态背光模组的灯珠包括绿色芯片和至少两个蓝色芯片，所述动态背光模组还包括处理器、存储器，所述存储器存储有计算机程序，所述计算机程序被处理器执行时实现如下步骤：
    接收信源信号；
    当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光。
  9. 如权利要求8所述的动态背光模组，其中，所述动态背光模组的灯珠还包括红色荧光粉，所述红色荧光粉包括氮化物、氟化物和硅酸盐中的至少一种。
  10. 如权利要求8所述的动态背光模组，其中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
    相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
    当所述信源信号为纯蓝信号时，根据所述纯蓝信号获取亮度需求信息，并根据所述亮度需求信息确定蓝色芯片的第一驱动数量，所述第一驱动数量为两个以上；
    关闭绿色芯片，并根据所述第一驱动数量驱动对应数量的蓝色芯片输出蓝光。
  11. 如权利要求8所述的动态背光模组，其中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
    相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
    当所述信源信号为纯蓝信号时，获取接收所述纯蓝信号的第一接收时间，并根据所述第一接收时间确定蓝色芯片的第二驱动数量，所述第二驱动数量为两个以上；
    关闭绿色芯片，并根据所述第二驱动数量驱动对应数量的蓝色芯片输出蓝光。
  12. 如权利要求8所述的动态背光模组，其中，所述接收信源信号的步骤之后，还包括以下步骤：
    当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片；
    驱动所述目标芯片输出蓝光，并关闭所述目标芯片之外的其它蓝色芯片。
  13. 如权利要求12所述的动态背光模组，其中，所述当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片的步骤包括：
    当所述信源信号为混色信号时，获取各蓝色芯片的累计使用时长，并根据各蓝色芯片的累计使用时长从各蓝色芯片中确定一个目标芯片。
  14. 如权利要求13所述的动态背光模组，其中，所述当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片的步骤包括：
    当所述信源信号为混色信号时，获取接收所述混色信号的第二接收时间，并根据所述第二接收时间从各蓝色芯片中确定一个目标芯片。
  15. 一种存储介质，其中，所述存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如下步骤：
    接收信源信号；
    当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光。
  16. 如权利要求15所述的存储介质，其中，所述动态背光模组的灯珠还包括红色荧光粉，所述红色荧光粉包括氮化物、氟化物和硅酸盐中的至少一种。
  17. 如权利要求15所述的存储介质，其中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
    相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
    当所述信源信号为纯蓝信号时，根据所述纯蓝信号获取亮度需求信息，并根据所述亮度需求信息确定蓝色芯片的第一驱动数量，所述第一驱动数量为两个以上；
    关闭绿色芯片，并根据所述第一驱动数量驱动对应数量的蓝色芯片输出蓝光。
  18. 如权利要求15所述的存储介质，其中，所述动态背光模组的灯珠包括至少三个蓝色芯片，
    相应的，所述当所述信源信号为纯蓝信号时，关闭绿色芯片，并驱动两个以上的蓝色芯片输出蓝光的步骤包括：
    当所述信源信号为纯蓝信号时，获取接收所述纯蓝信号的第一接收时间，并根据所述第一接收时间确定蓝色芯片的第二驱动数量，所述第二驱动数量为两个以上；
    关闭绿色芯片，并根据所述第二驱动数量驱动对应数量的蓝色芯片输出蓝光。
  19. 如权利要求15所述的存储介质，其中，所述接收信源信号的步骤之后，还包括以下步骤：
    当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片；
    驱动所述目标芯片输出蓝光，并关闭所述目标芯片之外的其它蓝色芯片。
  20. 如权利要求19所述的存储介质，其中，所述当所述信源信号为混色信号时，从各蓝色芯片中确定一个目标芯片的步骤包括：
    当所述信源信号为混色信号时，获取各蓝色芯片的累计使用时长，并根据各蓝色芯片的累计使用时长从各蓝色芯片中确定一个目标芯片。
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