CN113267928A

CN113267928A - Backlight module, display module, color correction method, system and equipment

Info

Publication number: CN113267928A
Application number: CN202110477242.XA
Authority: CN
Inventors: 鹿堃; 柏玲; 陈芪飞; 周星; 徐迪
Original assignee: BOE Technology Group Co Ltd; Beijing BOE Display Technology Co Ltd
Current assignee: BOE Technology Group Co Ltd; Beijing BOE Display Technology Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-08-17
Anticipated expiration: 2041-04-29
Also published as: CN113267928B

Abstract

The application discloses backlight module, display module and color correction method, system and equipment, wherein the backlight module comprises: the LED light source device comprises a light bar, a light source module and a light source module, wherein at least two LED light sources with different colors are arranged on the light bar, each LED light source emits light with one color, the LED light sources with the same color are connected in series to form an LED string, and the LED light sources with different colors are arranged in a mixed manner; and the control IC comprises at least two current control units, each current control unit is connected with one LED string, and the driving current of the LED string is adjusted through the current control units. The backlight module provided by the embodiment of the application meets the lateral entering type backlight type of the display device, and improves the chromatic aberration among individual displays through the color correction of the backlight source; meanwhile, the color number reduction and the transmittance loss caused by gray scale color correction can be avoided.

Description

Backlight module, display module, color correction method, system and equipment

Technical Field

The present application relates generally to the field of display technologies, and in particular, to a backlight module, a display module, and a method, a system, and an apparatus for color correction.

Background

At present, an LCD panel is mostly used in a liquid crystal display to match with an LED backlight source, and color differences inevitably exist among individuals of the liquid crystal panel due to the fluctuation of the thickness of a color film and the fluctuation of LED fluorescent powder and a chip in the manufacturing process.

The conventional display usually has a color correction function, and the full white picture before color correction usually uses R255/G255/B255 gray scales, and the number of colors that can be displayed is 256 × 256 to 16.8M.

After color correction, the R/G/B gray scale of the full white picture is adjusted according to the individual color coordinate level of the display panel, for example, a certain display with reddish initial color adjusts the gray scale to the R224/G255/B255 gray scale which is initially set. After color correction, the number of colors actually displayable on the display is 224 × 256 — 14.7M, the number of colors decreases, and the panel transmittance of the full white screen is also lost to some extent.

Disclosure of Invention

In view of the above-mentioned defects or shortcomings in the prior art, it is desirable to provide a backlight module, a display module, a color correction method, a system and a device, which can avoid the loss of gray scales and the reduction of brightness caused by the conventional gray scale color correction, and improve the product specification.

In a first aspect, the present application provides a backlight module, comprising:

the LED light source device comprises a light bar, a light source module and a light source module, wherein at least two LED light sources with different colors are arranged on the light bar, each LED light source emits light with one color, the LED light sources with the same color are connected in series to form an LED string, and the LED light sources with different colors are arranged in a mixed manner;

and the control IC comprises at least two current control units, each current control unit is connected with one LED string, and the driving current of the LED string is adjusted through the current control units.

Preferably, the LED light source is a light source of three colors, and includes a first color LED, a second color LED, and a third color LED, and the first color LED, the second color LED, and the third color LED are alternately arranged in sequence.

Further, at least two different colors of the LED light sources are distributed around a color point corresponding to the central color patch.

In a second aspect, the present application provides a display module, including a display screen and a backlight module, the backlight module provides light to the display screen so that the display screen displays a picture, wherein the backlight module is a side-in type backlight source, and the backlight module is any one of the above backlight modules.

Further, the number of the LED light sources and the proportion of the LED light sources in each color are determined according to the chromatic value of the display screen.

In a third aspect, the present application provides a color correction method for a display module, the method including:

acquiring a display module to be color-corrected, wherein the display module is the display module in any one of claims 4-5;

simultaneously lightening each LED string to enable the display screen to display a picture, and acquiring a chromatic value of the display screen;

and respectively adjusting the driving parameters of the LED strings to enable the chromatic value of the display screen to reach a target chromatic value.

Further, before the simultaneously lighting the LED strings, the method further includes:

and independently lighting the LED strings corresponding to different colors to enable the display screen to display pictures, and respectively obtaining the chromatic values of the display screen correspondingly lighting the LED strings of different colors.

Further, the adjusting the driving parameters of the LED strings respectively includes:

setting up a correction function based on the chromaticity value of the display screen of the correspondingly lighted LED string of each color and the target chromaticity value;

solving the correction function to obtain a correction coefficient of the LED string;

and correcting the driving parameters of the LED strings based on the correction coefficients, wherein the driving parameters are one or more of current ratio, duty ratio and brightness ratio among the LED strings.

In a fourth aspect, the present application provides a color correction system for a display module, configured to execute the color correction method for a display module described above, including:

the chromaticity measuring device is used for acquiring the chromaticity value of the display screen;

the main control device is used for receiving data of the colorimetric measurement system; calculating the correction coefficient and calculating a correction value of a drive parameter of each of the LED strings;

and the burning IC device is used for receiving the correction value of the driving parameter of each LED string sent by the main control device and burning the control IC on the backlight module.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

according to the backlight module provided by the embodiment of the application, the LED light sources with various colors are arranged in series, and the driving current of each LED string can be regulated and controlled through the control IC, so that the LEDs with different colors can realize the control of different brightness; the lateral entering type backlight type of the display device is met, and the chromatic aberration between the individual displays is improved through the color correction of the backlight source; meanwhile, the color number reduction and the transmittance loss caused by gray scale color correction can be avoided.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present application;

fig. 2 is a circuit schematic diagram of a backlight module according to an embodiment of the present disclosure;

FIG. 3 is a schematic diagram of a color block distribution of an LED light source provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of a display module according to an embodiment of the present disclosure;

fig. 5 is a flowchart of a color correction method of a display module according to an embodiment of the present disclosure;

fig. 6 is a flowchart of a method for adjusting driving parameters of each LED string according to an embodiment of the present application;

fig. 7 is a flowchart of a color correction method of a display module according to an embodiment of the present disclosure;

fig. 8 is a schematic diagram of color coordinates of three color blocks in a mixed manner according to an embodiment of the present application;

fig. 9 is a flowchart of a color correction method of a display module according to a second embodiment of the present application;

FIG. 10 is a first schematic diagram of color coordinates of a two-color patch mixture provided in example two of the present application;

FIG. 11 is a second schematic diagram of color coordinates of a two-color patch mixture provided in example two of the present application;

FIG. 12 is a third schematic color coordinate diagram of a two-color patch blend provided in example two of the present application;

FIG. 13 is a schematic diagram of color coordinates of a two-color patch mixture provided in example two of the present application;

FIG. 14 is a schematic diagram of color coordinates of a two-color block mixture provided in example two of the present application;

fig. 15 is a schematic structural diagram of a color correction system of a display module according to an embodiment of the present disclosure;

fig. 16 is a schematic structural diagram of a computer device according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1 in detail, in a first aspect, the present application provides a backlight module comprising

The LED light source device comprises a light bar 1, wherein at least two LED light sources 101 with different colors are arranged on the light bar, each LED light source emits light with one color, the LED light sources with the same color are connected in series to form an LED string 10, and the LED light sources with different colors are arranged in a mixed manner;

and the control IC 2 comprises at least two current control units 20, each current control unit is connected with one LED string, and the driving current of the LED string is adjusted through the current control units.

It should be noted that, in this embodiment of the application, the LED light sources of different colors are arranged on the light bar in a mixed manner, and the arrangement manner may be arranged according to a certain sequence or may be arranged randomly, but all the LED light sources on the LED string of each color are distributed on the whole length of the light bar, and by the arrangement of the different colors in a distribution staggered manner, the colors of the light bar can be fully mixed when the light bar is mixed and illuminated, so that the whole color rendering is more uniform.

In one embodiment, the LED light source 101 is a three-color light source, and includes a first color LED, a second color LED, and a third color LED, which are alternately arranged in sequence.

In this embodiment, three color patches a/B/C are taken as an exemplary illustration, the first color LED is an a color patch, the second color LED is a B color patch, and the third color LED is a C color patch, and the arrangement is a/B/C/a/B/C … a/B/C.

In another embodiment, the LED light source 101 is a two-color light source, and includes first color LEDs and second color LEDs, which are alternately arranged in sequence.

In this embodiment, two color patches a/B are taken as an example, the first color LED is an a color patch, and the second color LED is a B color patch, and the arrangement is a/B/a/B … a/B.

It should be noted that the arrangement manner of the color blocks in the embodiment of the present application is sequentially and alternately arranged, the arrangement order of the colors is not specifically limited, but two adjacent colors are different colors. Preferably, the color patches of the same color are arranged at the same interval, and the colors are fully mixed after light enters the light guide plate.

Further, at least two different colors of the LED light sources are distributed around a color point corresponding to the central color patch. The color distribution is shown in fig. 3, and fig. 3 is a schematic diagram of three colors, and the same two colors are also distributed in two opposite directions of the color point corresponding to the central color block. By selecting the colors distributed in different directions of the central color block, the color development of the display can be more balanced, and the brightness can be more uniform.

For example, the color of the color block can be selected from red and blue; red, green, blue; or red, green, blue, white; the application does not limit the selection of color block colors, and in other embodiments, the selection can be performed according to the color gamut requirements of different displays.

In a second aspect, please refer to fig. 4 in detail, the present application provides a display module, which includes a display screen 200 and a backlight module 100, where the backlight module provides light to the display screen to enable the display screen to display a picture, and is characterized in that the backlight module is a side-in type backlight source, and the backlight module is any one of the above backlight modules.

If the display device is of the RGB type, the color LED strings may include red, green, and blue color patches. For another example, if the display device is RGBW type, the LED strings of multiple colors may further include a white color block. In this embodiment, an RGB type display device is taken as an example.

In order to meet the requirements of performance parameters of different displays, the number of the LED light sources, the color ratio and the like can be specifically adjusted.

acquiring a display module to be subjected to color correction, wherein the display module is any one of the display modules;

s2, simultaneously lightening the LED strings to enable the display screen to display pictures and obtain the chromatic value of the display screen;

s4, respectively adjusting the driving parameters of the LED strings to make the chromatic value of the display screen reach a target chromatic value.

The color coordinates (chromaticity coordinates) are the coordinates of the color. Based on the RGB color system, CIE uses three imaginary primary colors XYZ to establish a new chromaticity system, matches it with the tristimulus values of the isoenergetic spectrum, and designates the tristimulus values of the spectrum of a CIE1931 standard chromaticity observer as the XYZ color system for short. After transformation, the chromaticity coordinates are all positive values, and the XY coordinates are subjected to normalization processing to obtain x-Y chromaticity coordinates, also called CIExyY chromaticity diagram, wherein the Y axis is used for representing brightness.

In the present application, the colorimetric values refer to specific values of x and y corresponding to color coordinates (x, y), and in the present embodiment, the color coordinates obtained by a colorimeter are represented as (x, y, L).

In addition, in the embodiments of the present application, the chromaticity value reaches the target chromaticity value, which means that the values of the color coordinates x and y both reach the target chromaticity value.

In this embodiment, before the step S2 of simultaneously lighting the LED strings, the method further includes:

s1, the LED strings corresponding to different colors are independently lightened, so that the display screen displays pictures, and the chromatic values of the display screen correspondingly lightening the LED strings of the colors are respectively obtained.

In the embodiment of the present application, the driving parameters input to the LED strings when individually lighting are the same as the driving parameters of the corresponding LED strings when simultaneously lighting. By testing the color coordinates of the display screen when the LED strings of different colors are lighted respectively, the corresponding relation of the color coordinates during mixed color display can be obtained.

It should be noted that, in other embodiments, the driving parameters during the independent lighting and the driving parameters during the simultaneous lighting are different, and the relationship between the parameters during the independent lighting and the parameters during the simultaneous lighting is further obtained by performing conversion according to the CIE1931 standard chromaticity system. For convenience of explanation, the present embodiment is exemplified in a scheme in which the driving parameters of the individual lighting and the simultaneous lighting are the same.

As shown in fig. 6, the adjusting the driving parameters of the LED strings in step S4 includes:

s401, setting up a correction function based on the colorimetric values of the display screens of the correspondingly lighted LED strings of the colors and the target colorimetric values;

s402, solving the correction function to obtain a correction coefficient of the LED string;

and S403, correcting the driving parameters of the LED strings based on the correction coefficients, wherein the driving parameters are one or more of current ratio, duty ratio and brightness ratio among the LED strings.

The current ratio refers to a ratio of drive currents in the LED strings; duty cycle is the proportion of the time of energization to the total time within a pulse cycle; since the brightness of the LED is approximately proportional to the current, the brightness ratio in this application is equal to the current ratio.

When the display screen is corrected, one or more of the driving parameters can be adjusted, and a certain parameter or a plurality of parameters can be specifically selected for correction according to correction equipment during specific operation. Based on the same principle, the current ratio is exemplarily described in the embodiments of the present application.

Example one

The LED light source is a light source with three colors, the first color LED is an A color block, the second color LED is a B color block, the third color LED is a C color block, and the arrangement mode is A/B/C/A/B/C … A/B/C.

The application provides a color correction method of a display module, as shown in fig. 7, the method comprises the following steps:

ST1, independently lighting the LED strings corresponding to the A \ B \ C colors respectively, so that the display screen displays pictures and the chromatic values of the display screen correspondingly lighting the LED strings of the colors are obtained respectively.

Obtaining and recording color coordinates of the display screen when one color LED string is independently lightened through a colorimeter, wherein the color coordinates corresponding to the first color LED are (x)_A,y_A,L_A) The second color LED has a color coordinate of (x)_B,y_B,L_B) The color coordinate corresponding to the third color LED is (x)_C, y_C,L_C)。

Obtaining tristimulus values through a CIE1931 standard chromaticity system and through color coordinates; wherein the tristimulus value corresponding to the first color LED is (X)_A,Y_A,Z_A) The second color LED has a tristimulus value of (X)_B,Y_B,Z_B) The tristimulus value corresponding to the third color LED is (X)_C,Y_C,Z_C)。

According to the CIE1931 standard, XYZ chromaticity coordinates are calculated from XYZ tristimulus values according to the following formula:

wherein x + y + z is 1.

In addition, the relationship between tristimulus and luminance is expressed as:

in step ST1, when lighting alone, the drive currents in the LED strings are:

the drive current on the first LED string corresponding to the color block A is I_AThe driving current on the second LED string corresponding to the color block B is I_BAnd the driving current on the third LED string corresponding to the C color block is I_C。

ST2, simultaneously lightening each LED string, enabling the display screen to display pictures, and obtaining the chromatic value of the display screen. The principle of mixing three colors is shown in fig. 8.

When the LED strings are simultaneously lighted, the driving current of the LED strings with the corresponding colors is the same as that of the LED strings with the corresponding colors when the LED strings are singly lighted.

In the embodiment of the present application, the current ratio is taken as an exemplary illustration, and it is assumed that the adjustment ratios of the driving currents of the LED strings are respectively 1: m: n is the same as the formula (I).

Establishing a current relation:

wherein in the expression, I_A、I_B、I_CThe driving currents of the LED strings are respectively used when the LED strings are independently lightened; i is_A′、I_B′、I_C' are the drive currents on the LED strings when simultaneously lit.

ST3, establishing a relation between lighting the LED strings simultaneously and lighting the LED strings separately:

in equation (3), the tristimulus value (X) of the display screen when the LED strings are simultaneously lit_w，Y_w，Z_w) The tristimulus value corresponding to the single lighting of the first color LED is (X)_A,Y_A, Z_A) The tristimulus value of (X) for lighting the second color LED alone_B,Y_B,Z_B) The tristimulus value corresponding to the independent lighting of the third color LED is (X)_C,Y_C,Z_C)。

The relationship between the luminances is obtained by equation (2):

in the formula (3), L_A，L_B，L_CThe brightness values of the display screen when the LED strings are independently lightened are respectively; l is_wThe brightness value of the display screen when the LED strings are simultaneously lighted.

ST4, establishing a correction function expression:

in conjunction with equation (1), one can obtain:

substituting the formulas (4), (5) into the formula (3) yields:

the correction function is obtained by equation (6):

ST5, solving the correction function to obtain the correction coefficient of the LED string;

according to the formula (7) x_w、y_wThe value of (b) is set as the target colorimetric value, i.e., the values of the correction coefficients m, n can be calculated. In some embodiments, w (0.313,0.329), i.e., x_w＝0.313； y_w＝0.329。

In other embodiments, the target chromaticity value may be other values, specifically adjusted according to specific requirements for the display.

ST6, the drive current of each LED string is adjusted based on the correction coefficient.

The driving current of the LED string can be adjusted by substituting the values of m and n into the formula (2).

In the embodiment of the present application, although each display device has a color difference due to the influence of raw materials and production processes, the color coordinates and the brightness values set for each display device are the same through setting on the CIE1931 color space chromaticity diagram corresponding to each display device.

The color correction method of the embodiment realizes color correction of the liquid crystal module, adds a color correction link in the production process of the liquid crystal module, realizes the consistency of the shipment color of the liquid crystal module, avoids gray scale loss and brightness reduction caused by traditional gray scale color correction, and improves the product specification.

Example two

The LED light source is a light source with two colors, the first color LED is an A color block, the second color LED is a B color block, and the arrangement mode is A/B/A/B … A/B.

The application provides a color correction method of a display module, as shown in fig. 9, the method comprises the following steps:

ST10, independently lighting the LED strings corresponding to the A \ B colors respectively, so that the display screen displays the picture, and the colorimetric values of the display screen corresponding to the LED strings of the various colors are obtained respectively.

Obtaining and recording color coordinates of the display screen when one color LED string is independently lightened through a colorimeter, wherein the color coordinates corresponding to the first color LED are (x)₁,y₁,L₁) The second color LED has a color coordinate of (x)₂,y₂,L₂)。

Obtaining tristimulus values through a CIE1931 standard chromaticity system and through color coordinates; wherein the tristimulus value corresponding to the first color LED is (X)₁,Y₁,Z₁) The second color LED has a tristimulus value of (X)₁,Y₁,Z₁)。

wherein x + y + z is 1.

In addition, the relationship between the tristimulus value and the luminance is expressed as:

in step ST1, when lighting alone, the drive currents in the LED strings are:

the drive current on the first LED string corresponding to the color block A is I_AThe driving current on the second LED string corresponding to the color block B is I_B。

ST20, simultaneously lightening each LED string, enabling the display screen to display pictures, and obtaining the chromatic value of the display screen.

In the embodiment of the present application, the current ratio is taken as an exemplary illustration, and it is assumed that the adjustment ratios of the driving currents of the LED strings are respectively 1: k.

establishing a current relation:

wherein in the expression, I_A、I_BThe driving currents of the LED strings are respectively used when the LED strings are independently lightened; i is_A′、I_B' are the drive currents on the LED strings when simultaneously lit. ST30, establishing a relation between lighting the LED strings simultaneously and lighting the LED strings separately:

X_T＝X₁+X₂ (3)

in equation (3), the tristimulus value (X) of the ideal color point when the LED strings are simultaneously lit_T， Y_T，Z_T) The tristimulus value corresponding to the single lighting of the first color LED is (X)₁,Y₁,Z₁) The tristimulus value of (X) for lighting the second color LED alone₂,Y₂,Z₂)。

ST40, a correction function expression is established.

In the embodiment of the present application, since there are only two color blocks, the color point after mixing can only be located on the connecting line of the two color points, which may result in that the color point T (x) after mixing cannot be guaranteed_T,y_T) Perfectly coinciding with the ideal value W (0.313,0.329) can only be as close as possible.

It should be noted that there are several characteristic situations when selecting color blocks, (a) two selected color blocks are located at two sides of the target color coordinate, as shown in fig. 10; (b) the two color patches selected are located on the same side of the target color coordinates, where point a is closer to the target color coordinates, as shown in fig. 11; (c) the two color patches selected are located on the same side of the target color coordinates, where point a is closer to the target color coordinates, as shown in fig. 12; (d) the color coordinate values x of the two selected color blocks coincide as shown in fig. 13; (e) the color coordinate values y of the selected two color patches are overlapped as shown in fig. 14.

In establishing the correction function expression, the above cases need to be considered, and therefore, in the concrete judgment, it is assumed that the point C is a point on the extension line of AB, CW is perpendicular to AB, and the above case is judged according to the coordinate position of the point C.

The color coordinate corresponding to the first color LED is A (x)₁,y₁,L₁) The color coordinates of the second color LED are B (x)₂,y₂,L₂) Target color point is W (x)_w,y_w,L_w)。

Let C point coordinate be (x)_O,y_O,L_O) AB is perpendicular to WO, and A/B/O is collinear, the formula can be obtained:

the color coordinate C (x) can be obtained from the formula (4)₀,y₀)

For the case of (a): min (y)₁,y₂)≤y₀≤max(y₁,y₂)

As can be seen from the schematic diagram of FIG. 10, the coordinates of the vertical intersection C of FIG. 10 are located on the line AB, and only the mixed color point T (x)_T,y_T,L_T) At the position of point C, the distance between T and W is shortest.

The color coordinates of the T-point:

for the case of (b): y is₀≤min(y₁,y₂) It can be seen from the schematic diagram of fig. 11 that the vertical intersection C in fig. 11(i), (ii) is located on the extension of the BA direction, and only the mixed color point T (x)_T,y_T,L_T) At the position of A or B point, the distance between T and W is shortest.

The color coordinates of the T-point:

for the case of (c): y is₀≥max(y₁,y₂)

As can be seen from the schematic diagram of FIG. 12, the vertical intersection C in FIGS. 12(i), (ii) is located on the extension of the AB direction, and only the mixed color point T (x)_T,y_T,L_T) At the position of A or B point, the distance between T and W is shortest.

The color coordinates of the T-point:

for the case of (d): x is the number of₁＝x₂

From the principle of fig. 13As can be seen, in FIG. 13, the x values of the target color coordinates of the selected two color patches are the same, the coordinates of the vertical intersection C are located on the line AB, and only the mixed color point T (x) is shown_T, y_T,L_T) At the position of point C, the distance between T and W is shortest.

The color coordinates of the T-point:

for the case of (e): y is₁＝y₂

As can be seen from the schematic diagram of FIG. 13, the y values of the target color coordinates of the two color blocks selected in FIG. 13 are the same, the coordinate of the vertical intersection C is located on the AB line, and only the mixed color point T (x) is shown_T, y_T,L_T) At the position of point C, the distance between T and W is shortest.

The color coordinates of the T-point:

from the equations (1) and (3) and from the different cases the choice of (6), (6'), can be obtained:

from equation (7), a correction function can be obtained:

ST50, solving the correction function to obtain the correction coefficient of the LED string.

According to the formula (8) x_w、y_wIs set as a target chromatic value, namely, a mixed color point T (x) can be obtained by calculation_T,y_T) The value of (c). In some embodimentsW (0.313,0.329), i.e. x_w＝0.313；y_w＝0.329。

The value of the correction function k can be obtained by substituting the calculated (7) into the formula (8).

ST60, the drive current of each LED string is adjusted based on the correction coefficient.

The value of k is substituted into equation (2), and the driving current of the LED string can be adjusted.

According to the color correction method, the LED strings with two combined colors are adopted, so that the color correction of the liquid crystal module is realized, the color correction link is added in the production process of the liquid crystal module, the consistence of the shipment colors of the liquid crystal module is realized, the gray scale loss and the brightness reduction caused by the traditional gray scale color correction are avoided, and the product specification is improved.

In a fourth aspect, please refer to fig. 15 in detail, the present application provides a color calibration system for a display module, configured to perform the color calibration method for the display module, including:

the chromaticity measuring device 400 is used for acquiring the chromaticity value of the display screen;

a main control device 500 for receiving data of the colorimetric measurement system; calculating the correction coefficient and an adjustment value of the driving current of each LED string;

and the burning IC device 600 is configured to receive the adjustment value of the driving current of each LED string sent by the main control device, and burn the control IC on the backlight module.

Referring now to FIG. 16, the present application provides a computer device. FIG. 16 shows a schematic block diagram of a computer device suitable for use in implementing embodiments of the present application. Comprising a processor and a memory, said processor and said memory being interconnected, wherein said memory is adapted to store a computer program comprising program instructions, said processor being configured to invoke said program instructions to perform a method according to any of the above.

In the embodiment of the present application, the processor is a processing device having a function of performing a logic operation, for example, a Central Processing Unit (CPU), a field programmable logic array (FPGA), a Digital Signal Processor (DSP), a single chip Microcomputer (MCU), an application specific logic circuit (ASIC), an image processor (GPU), and the like having a data processing capability and/or a program execution capability. It will be readily appreciated that the processor is typically communicatively coupled to the memory, on which any combination of one or more computer program products is stored, and that the memory may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. Volatile memory can include, for example, Random Access Memory (RAM), cache memory (or the like). The non-volatile memory may include, for example, Read Only Memory (ROM), a hard disk, an Erasable Programmable Read Only Memory (EPROM), USB memory, flash memory, and the like. One or more computer instructions may be stored on the memory and executed by the processor to implement the associated analysis functions. Various applications and various data, such as various data used and/or generated by the applications, may also be stored in the computer-readable storage medium.

In the embodiment of the present application, the modules may be implemented by a processor executing relevant computer instructions, for example, the image processing module may be implemented by a processor executing instructions of an image transformation algorithm, the machine learning module may be implemented by a processor executing instructions of a machine learning algorithm, and the neural network may be implemented by a processor executing instructions of a neural network algorithm.

In the embodiment of the present application, each module may run on the same processor, or may run on multiple processors; the modules can run on a processor of the same architecture, such as a processor of an X86 architecture, or run on a processor of a different architecture, such as an image processing module running on a CPU of an X86 architecture, and a machine learning module running on a GPU. Each module can be packaged in one computer product, for example, each module is packaged in one computer software and runs on one computer (server), or can be packaged in different computer products respectively or partially, for example, the image processing module is packaged in one computer software and runs on one computer (server), and the machine learning modules are packaged in separate computer software and runs on another computer (server); the computing platform for executing each module can be local computing, cloud computing, or hybrid computing formed by local computing and cloud computing.

As shown in fig. 16, the computer system includes a Central Processing Unit (CPU)901, which can perform various appropriate actions and processes in accordance with a program stored in a Read Only Memory (ROM)902 or a program loaded from a storage section 908 into a Random Access Memory (RAM) 903. In the RAM903, various programs and data necessary for operation instructions of the system are also stored. The CPU901, ROM902, and RAM903 are connected to each other via a bus 904. An input/output (I/O) interface 905 is also connected to bus 904.

The following components are connected to the I/O interface 905; an input portion 906 including a keyboard, a mouse, and the like; an output section 907 including components such as a Cathode Ray Tube (CRT), a Liquid Crystal Display (LCD), and the like, and a speaker; a storage portion 908 including a hard disk and the like; and a communication section 909 including a network interface card such as a LAN card, a modem, or the like. The communication section 909 performs communication processing via a network such as the internet. The drive 910 is also connected to the I/O interface 905 as necessary. A removable medium 911 such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, or the like is mounted on the drive 910 as necessary, so that a computer program read out therefrom is mounted into the storage section 908 as necessary.

In particular, according to embodiments of the present application, the process described above with reference to the flowchart fig. 1 may be implemented as a computer software program. For example, embodiments of the present application include a computer program product comprising a computer program embodied on a computer readable medium, the computer program comprising program code for performing the method illustrated by the flow chart. In such an embodiment, the computer program comprises program code for performing the method illustrated in the flow chart. In such an embodiment, the computer program may be downloaded and installed from a network through the communication section 909, and/or installed from the removable medium 911. The above-described functions defined in the system of the present application are executed when the computer program is executed by a Central Processing Unit (CPU) 901.

The present application also provides a computer readable storage medium having stored thereon a computer program for execution by a processor to implement a method as claimed in any one of the above.

It should be noted that the computer readable medium shown in the present application may be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present application, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. In this application, however, a computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take many forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device. Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, RF, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operational instructions of possible implementations of systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.

The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the scope of the described embodiments. It will be appreciated by those skilled in the art that many variations and modifications may be made to the teachings of the invention, which fall within the scope of the invention as claimed.

Claims

1. A backlight module, comprising:

2. The backlight module of claim 1, wherein the LED light sources are three-color light sources including a first-color LED, a second-color LED and a third-color LED, and the first-color LED, the second-color LED and the third-color LED are alternately arranged in sequence.

3. The backlight module of claim 1, wherein at least two different colors of the LED light sources are distributed around a color point corresponding to a center color patch.

4. A display module, comprising a display screen and a backlight module, wherein the backlight module provides light to the display screen to make the display screen display pictures, characterized in that the backlight module is a side-in type backlight source, and the backlight module is the backlight module of any one of claims 1 to 3.

5. The display module assembly according to claim 4, wherein the number of the LED light sources and the ratio of the LED light sources of each color are determined according to the chromaticity value of the display screen.

6. A color correction method of a display module is characterized by comprising the following steps:

7. The method of claim 6, further comprising, before the simultaneously lighting the LED strings:

8. The method according to claim 7, wherein the adjusting the driving parameters of the LED strings respectively comprises:

9. A color correction system for a display module, for performing the color correction method for the display module according to claims 6-8, comprising:

10. A computer device comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing a color correction method of a display module according to any one of claims 6 to 8 when executing the computer program.