Brightness configuration method and device, liquid crystal display equipment and readable storage medium

Abstract

The invention relates to a brightness configuration method and device, liquid crystal display equipment and a readable storage medium. The method comprises the steps that candidate LCD color coordinates and standard C light color coordinates of a reference picture displayed by an LCD under a backlight source and reference LCD color coordinates of the reference picture displayed under standard C light are obtained, and candidate backlight source color coordinates corresponding to the reference picture are determined according to the candidate LCD color coordinates, the standard C light color coordinates and the reference LCD color coordinates; according to the candidate backlight color coordinate and the standard backlight color coordinate, determining a candidate backlight light effect of the backlight; according to the candidate backlight light efficiency of the backlight source and the transmittance of the LCD to the backlight source, determining the candidate liquid crystal display light efficiency of the LCD; and determining a target liquid crystal display lighting effect based on the candidate liquid crystal display lighting effect, and configuring target brightness corresponding to the liquid crystal display equipment based on the target LCD color coordinate corresponding to the target liquid crystal display lighting effect and the target backlight color coordinate of the backlight. By adopting the method, the accuracy of brightness configuration can be improved.

Description

Technical Field

[0001] The present application relates to the field of liquid crystal display technology, and in particular to a brightness configuration method, device, computer equipment, computer-readable storage medium, and computer program product. Background Art

[0002] LCD (Liquid Crystal Display) is a type of liquid crystal display device that uses a liquid crystal display screen to display images. The basic structure of an LCD light machine can include three parts: a liquid crystal display screen, a backlight unit, and a power control system. Among them, the liquid crystal display screen is the core part of the LCD light machine, which realizes image display by rotating liquid crystal molecules under the action of an electric field. The rotation of liquid crystal molecules controls the transmission and reflection of light, thereby forming an image. The backlight unit provides a light source for the liquid crystal display screen, and a cold cathode fluorescent lamp (CCFL) or LED (Light Emitting Diode) can be used as a light source. These light sources emit light, which can evenly illuminate the liquid crystal display screen through components such as reflectors and lenses. The power control system can provide power to the LCD light machine and can control the voltage and current of the liquid crystal display screen, thereby controlling the rotation of liquid crystal molecules and the light source of the backlight unit.

[0003] In LCD light engines, if LED is used as the backlight source, the accuracy of the LED color coordinates will directly affect the color coordinate performance of the LCD screen. At the same time, the color coordinate adjustment of the LCD screen will also affect the overall color effect of the LED backlight. Therefore, when designing and manufacturing LCD light engines, it is necessary to comprehensively consider the matching and adjustment of the LCD color coordinates and the LED color coordinates to configure the corresponding light engine brightness. Summary of the invention

[0004] Based on this, it is necessary to provide a brightness configuration method, device, computer equipment, computer-readable storage medium and computer program product that can improve the accuracy of brightness configuration in order to solve the above technical problems.

[0005] In a first aspect, the present application provides a brightness configuration method, which is applied to a liquid crystal display device, wherein the liquid crystal display device includes a liquid crystal display (LCD) and a backlight source, and the method includes:

[0006] Acquire candidate LCD color coordinates, standard C light color coordinates, and reference LCD color coordinates of the reference picture displayed by the LCD under the backlight source, and determine candidate backlight color coordinates corresponding to the reference picture according to the candidate LCD color coordinates, the standard C light color coordinates, and the reference LCD color coordinates;

[0007] Determining a candidate backlight effect of the backlight source according to the candidate backlight source color coordinates and the standard backlight source color coordinates;

[0008] Determining a candidate liquid crystal display light effect of the LCD according to the candidate backlight light effects of the backlight source and the transmittance of the LCD to the backlight source;

[0009] A target liquid crystal display light effect is determined based on the candidate liquid crystal display light effects, and a target brightness corresponding to the liquid crystal display device is configured based on a target LCD color coordinate corresponding to the target liquid crystal display light effect and a target backlight color coordinate of the backlight source.

[0010] In one embodiment, determining the candidate backlight source color coordinates corresponding to the reference picture according to the candidate LCD color coordinates, the standard C light color coordinates and the reference LCD color coordinates includes:

[0011] Determine the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in each coordinate axis direction to obtain each color coordinate ratio;

[0012] The candidate backlight source color coordinates corresponding to the reference picture are determined according to the color coordinate ratios and the standard C light color coordinates.

[0013] In one embodiment, determining the candidate backlight source color coordinates corresponding to the reference picture according to the color coordinate ratios and the standard C light color coordinates includes:

[0014] Determine the tristimulus values ​​corresponding to the standard C light color coordinates;

[0015] The product of each color coordinate ratio and the tristimulus value corresponding to the standard C light color coordinate in the corresponding coordinate axis direction is used as the coordinate value of the candidate backlight source color coordinate corresponding to the reference picture in the corresponding coordinate axis direction.

[0016] In one embodiment, determining the candidate backlight effect of the backlight source according to the candidate backlight source color coordinates and the standard backlight source color coordinates includes:

[0017] Determine the standard backlight effect corresponding to the standard backlight source color coordinates;

[0018] Based on the standard backlight effect, the standard backlight source color coordinates and the candidate backlight source color coordinates, a candidate backlight effect of the backlight source is determined.

[0019] In one embodiment, determining the candidate liquid crystal display light effect of the LCD according to the candidate backlight light effect of the backlight source and the transmittance of the LCD to the backlight source includes:

[0020] The product of the candidate backlight effect of the backlight source and the transmittance of the LCD to the backlight source is used as the candidate liquid crystal display effect of the LCD.

[0021] In one embodiment, determining a target liquid crystal display light effect based on the candidate liquid crystal display light effect comprises:

[0022] A maximum candidate liquid crystal display light effect is selected from all candidate liquid crystal display light effects, and the maximum candidate liquid crystal display light effect is used as a target liquid crystal display light effect.

[0023] In a second aspect, the present application further provides a brightness configuration device, comprising:

[0024] a backlight color coordinate determination module, configured to obtain candidate LCD color coordinates, standard C light color coordinates, and reference LCD color coordinates for displaying the reference picture under the standard C light of the LCD when the LCD displays the reference picture under the backlight, and determine candidate backlight color coordinates corresponding to the reference picture according to the candidate LCD color coordinates, the standard C light color coordinates, and the reference LCD color coordinates;

[0025] A backlight effect determination module, used to determine the candidate backlight effect of the backlight source according to the candidate backlight color coordinates and the standard backlight color coordinates;

[0026] A liquid crystal display light effect determination module, used to determine a candidate liquid crystal display light effect of the LCD according to the candidate backlight light effects of the backlight source and the transmittance of the LCD to the backlight source;

[0027] A brightness configuration module is used to determine a target liquid crystal display light effect based on the candidate liquid crystal display light effects, and to configure a target brightness corresponding to the liquid crystal display device based on a target LCD color coordinate corresponding to the target liquid crystal display light effect and a target backlight color coordinate of the backlight source.

[0028] In a third aspect, the present application further provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the steps of the brightness configuration method provided in the first aspect are implemented.

[0029] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the steps of the brightness configuration method provided in the first aspect are implemented.

[0030] In a fifth aspect, the present application further provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the brightness configuration method provided in the first aspect.

[0031] The brightness configuration method, device, computer equipment, computer-readable storage medium and computer program product obtain and determine the candidate backlight color coordinates corresponding to the reference picture based on the candidate LCD color coordinates of the LCD displaying the reference picture under the backlight, the standard C light color coordinates and the reference LCD color coordinates of the LCD displaying the reference picture under the standard C light, determine the candidate backlight light effect of the backlight source according to the candidate backlight color coordinates and the standard backlight color coordinates, determine the candidate liquid crystal display light effect of the LCD according to the candidate backlight light effect of the candidate backlight source and the transmittance of the LCD to the backlight source, and then determine the target liquid crystal display light effect based on the candidate liquid crystal display light effect, configure the target brightness of the liquid crystal display device according to the target LCD color coordinates corresponding to the target liquid crystal display light effect and the target backlight color coordinates of the backlight source, so as to achieve the determination of the candidate liquid crystal display light effect corresponding to the candidate LCD color coordinates on the basis of the standard C light, determine the target liquid crystal display light effect from the candidate liquid crystal display light effects, obtain the corresponding matching backlight color coordinates based on the LCD color coordinates corresponding to the target liquid crystal display light effect, and accurately configure the brightness corresponding to the target liquid crystal display light effect based on the matching LCD color coordinates and the backlight color coordinates, thereby improving the accuracy of the brightness configuration. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] FIG1 is a diagram showing an application environment of a brightness configuration method according to an embodiment;

[0034] FIG2 is a schematic diagram of a flow chart of a brightness configuration method in one embodiment;

[0035] FIG3 is a schematic diagram of a flow chart of step 202 in one embodiment;

[0036] FIG4 is a schematic diagram of a flow chart of a brightness configuration method in another embodiment;

[0037] FIG5 is a structural block diagram of a brightness configuration device in one embodiment;

[0038] FIG. 6 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0040] At present, most of the LCD color and transmittance data on the market use standard C light as the backlight source. The spectrum of standard C light passing through LCD is based on the product of the standard C light spectrum and the transmittance of LCD to standard C light. In actual LCD optical machine design, the backlight source is often not standard C light, so it is necessary to adjust the backlight source to the actual backlight source spectrum according to the color requirements of the display screen.

[0041] The brightness configuration method provided in the embodiment of the present application can be applied to the liquid crystal display device 100 as shown in FIG1. ​​The liquid crystal display device includes an LCD 20, a backlight source 30 and a power control component 40. The light emitted by the backlight source 30 is uniformly illuminated on the LCD 20 through components such as a reflector and a lens. The arrangement state of the liquid crystal molecules in the LCD 20 will change under the action of the electric field, affecting the transmittance of the light and realizing the display of the image. The power control component 40 controls the voltage and current of the LCD 20, thereby controlling the rotation of the liquid crystal molecules and the intensity of the backlight source. Among them, the liquid crystal display device can be, but is not limited to, various personal computers, laptops, smart phones, game consoles, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things devices can be smart speakers, smart TVs, smart air conditioners, smart car-mounted devices, projection devices, etc. Portable wearable devices can be smart watches, smart bracelets, head-mounted devices, etc. The head-mounted device can be a virtual reality (VR) device, an augmented reality (AR) device, smart glasses, etc. The liquid crystal display device can be a server or a terminal.

[0042] In some exemplary embodiments, as shown in FIG2 , a brightness configuration method is provided, including the following steps 202 to 208. In which:

[0043] Step 202, obtain the candidate LCD color coordinates of the LCD displaying the reference picture under the backlight, the standard C light color coordinates, and the reference LCD displaying the reference picture under the standard C light, and determine the candidate backlight color coordinates corresponding to the reference picture based on the candidate LCD color coordinates, the standard C light color coordinates, and the reference LCD color coordinates.

[0044] Among them, the reference picture refers to the picture used as a reference for adjusting the picture brightness. The reference picture is, for example, a white field, which is a benchmark for evaluating the color accuracy of a liquid crystal display device. Different types of light sources have different effects on the projection white field. The reference picture is the picture displayed by the LCD under the backlight. The candidate LCD color coordinates of the LCD displaying the white field under the backlight are, for example, (0.29, 0.31) or (0.30, 0.33). The backlight source can be realized by LED or laser, and the backlight source is usually not standard C light. Standard C light is a standard light source specified by CIE (International Commission on Illumination) to unify the lighting conditions for color measurement. The light color is equivalent to the sky light with clouds, which can provide users with a comfortable and natural lighting environment. It is easy to understand that the color coordinates, color temperature and other parameters of standard C light are easy to obtain. For example, the color coordinates of standard C light are (0.313, 0.337), and the color temperature is about 6774K (Kelvin). The reference LCD color coordinates of the reference picture displayed under standard C light refer to the LCD color coordinates corresponding to the reference picture displayed when standard C light is used as the backlight source.

[0045] Optionally, the candidate LCD color coordinates may include multiple ones, and the candidate backlight color coordinates corresponding to the reference picture may be determined based on each candidate LCD color coordinate, the standard C light color coordinate and the reference LCD color coordinate. The candidate LCD color coordinate may be any color coordinate in the chromaticity diagram. Among them, the candidate backlight color coordinate is used to characterize the color coordinate of the backlight corresponding to the candidate LCD color coordinate. If the backlight source is an LED, the candidate backlight color coordinate is used to represent the LED color coordinate.

[0046] Optionally, a proportional relationship between the candidate LCD color coordinates and the reference LCD color coordinates may be determined, and based on the proportional relationship and the standard C light color coordinates, the candidate backlight color coordinates corresponding to the reference picture may be determined.

[0047] Step 204: Determine a candidate backlight light effect of the backlight source according to the candidate backlight source color coordinates and the standard backlight source color coordinates.

[0048] Among them, the candidate backlight light effect is used to characterize the light effect of the backlight source. The light effect can also be called the luminous efficiency of the light source or the power factor of the light source. The light effect of the light source refers to the ratio of the total luminous flux emitted by the light source to the electrical power (watts) consumed by the light source. When the light source consumes electrical energy, it will convert part of it into light energy, and the light effect measures the efficiency of this conversion. The higher the luminous efficiency value, the stronger the ability of the lighting equipment to convert electrical energy into light energy. The standard backlight color coordinates refer to the color coordinates of the standard backlight. The standard backlight is the backlight used for reference to calculate the light effect of the candidate backlight. For example, the standard backlight color coordinates are the standard LED color coordinates (0.26, 0.23).

[0049] Optionally, a standard backlight effect corresponding to the standard backlight source color coordinates may be determined, and then a candidate backlight effect of the backlight source may be determined according to the standard backlight effect and the candidate backlight source color coordinates. The candidate backlight effect is positively correlated with the green primary color stimulus value.

[0050] Step 206 , determining candidate liquid crystal display light effects of the LCD according to the candidate backlight light effects of the backlight source and the transmittance of the LCD to the backlight source.

[0051] Among them, the transmittance of the LCD to the backlight refers to the proportion of the backlight light that passes through the LCD. Optionally, the color coordinates of the backlight source to be selected corresponding to the transmittance of the LCD to the backlight source is 1 can be determined first, the difference between the candidate backlight source color coordinates and the color coordinates of the backlight source to be selected is calculated, and the transmittance of the LCD to the backlight source is determined based on the difference and the transmittance 1. For example, the difference between the green primary color coordinates of the candidate backlight source color coordinates and the green primary color coordinates in the backlight source color coordinates to be selected can be calculated, and then the transmittance of the LCD to the backlight source can be determined based on the difference and the transmittance 1.

[0052] Exemplarily, the difference between the green primary color coordinates of the candidate backlight source color coordinates and the green primary color coordinates of the candidate backlight source color coordinates is determined, the product between the difference and the transmittance coefficient is calculated, and the sum of the product and the transmittance 1 is used as the transmittance of the LCD to the backlight source. The transmittance coefficient is used to characterize the change ratio between the color coordinates and the transmittance. It can be calculated by the following formula (1).

[0053] Formula (1)

[0054] Among them, the green primary color coordinate in the selected backlight color coordinate is 0.34, that is, when the y coordinate of the backlight color coordinate is 0.34, the LCD transmittance is 1. It represents the transmittance of LCD when the y coordinate is 0.34, 0.317*k2 represents the green primary color coordinate of the candidate backlight color coordinate, and K1 represents the transmittance coefficient.

[0055] Optionally, the candidate liquid crystal display light effect of the LCD is determined according to the product relationship between the candidate backlight light effect of the backlight source and the transmittance of the LCD to the backlight source. The candidate liquid crystal display light effect is used to characterize the light effect corresponding to the candidate LCD color coordinate. For example, the product of the candidate backlight light effect of the backlight source and the transmittance of the LCD to the backlight source and the product or sum of the correction coefficient can be used to obtain the candidate liquid crystal display light effect of the LCD, and the correction coefficient can be set according to the actual application scenario.

[0056] Step 208 , determining a target LCD light effect based on the candidate LCD light effects, and configuring a target brightness corresponding to the LCD device based on a target LCD color coordinate corresponding to the target LCD light effect and a target backlight color coordinate of the backlight source.

[0057] Among them, the candidate liquid crystal display light effects may include multiple ones, and each candidate LCD color coordinate may correspond to a candidate liquid crystal display light effect. A candidate liquid crystal display light effect may be selected from multiple candidate liquid crystal display light effects as the target liquid crystal display light effect, and then the target backlight source color coordinates of the corresponding backlight source may be calculated based on the target LCD color coordinates corresponding to the target liquid crystal display light effect, and the target brightness corresponding to the liquid crystal display device is configured according to the target LCD color coordinates and the target backlight source color coordinates. It can be understood that the same target liquid crystal display light effect may correspond to multiple target LCD color coordinates and multiple backlight source color coordinates. Therefore, after determining the target liquid crystal display light effect, the LCD color coordinate range and the backlight source color coordinate range corresponding to the target brightness corresponding to the target liquid crystal display light effect may be obtained. In other words, based on any set of LCD color coordinates and backlight source color coordinates in the LCD color coordinate range and the backlight source color coordinate range, the corresponding target brightness can be configured.

[0058] Optionally, the largest or smallest candidate liquid crystal display light effect may be selected from a plurality of candidate liquid crystal display light effects as the target liquid crystal display light effect. Alternatively, any candidate liquid crystal display light effect other than the largest and the smallest may be selected as the target liquid crystal display light effect. The specific target liquid crystal display light effect may be selected according to the actual application scenario.

[0059] In the above brightness configuration method, by acquiring and determining the candidate backlight color coordinates corresponding to the reference picture based on the candidate LCD color coordinates of the LCD displaying the reference picture under the backlight source, the standard C light color coordinates, and the reference LCD color coordinates of the LCD displaying the reference picture under the standard C light, the candidate backlight color coordinates corresponding to the reference picture are determined, the candidate backlight light effects of the backlight source are determined according to the candidate backlight color coordinates and the standard backlight color coordinates, the candidate liquid crystal display light effects of the LCD are determined according to the candidate backlight light effects of the candidate backlight source and the transmittance of the LCD to the backlight source, and then the target liquid crystal display light effect is determined based on the candidate liquid crystal display light effect, and the target brightness of the liquid crystal display device is obtained according to the target LCD color coordinates corresponding to the target liquid crystal display light effect and the target backlight color coordinates of the backlight source. It can be achieved that on the basis of the standard C light, the candidate liquid crystal display light effect corresponding to the candidate LCD color coordinates is determined, the target liquid crystal display light effect is determined from the candidate liquid crystal display light effects, the corresponding matching backlight color coordinates can be obtained based on the LCD color coordinates corresponding to the target liquid crystal display light effect, and the brightness corresponding to the target liquid crystal display light effect can be accurately configured based on the matching LCD color coordinates and the backlight color coordinates, thereby improving the accuracy of the brightness configuration.

[0060] In some embodiments, as shown in FIG. 3 , determining candidate backlight color coordinates corresponding to the reference picture according to candidate LCD color coordinates, standard C light color coordinates and reference LCD color coordinates in step 202 includes the following steps 302 to 304 .

[0061] Step 302, determining the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in the directions of each coordinate axis, and obtaining each color coordinate ratio.

[0062] After the candidate LCD color coordinates and the reference LCD color coordinates are obtained, the proportional relationship between the candidate LCD color coordinates and the reference LCD color coordinates in the direction of the corresponding coordinate axes is determined.

[0063] Exemplarily, if the candidate LCD color coordinates are (x, y, z) and the reference LCD color coordinates are (x1, y1, z1), then the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in the x direction is k1=x / x1, the ratio in the y direction is k2=y / y1, and the ratio in the z direction is k3=z / z1, that is, the ratios of the color coordinates are k1, k2 and k3.

[0064] Step 304 : Determine the candidate backlight source color coordinates corresponding to the reference picture according to the color coordinate ratios and the standard C light color coordinates.

[0065] Optionally, the candidate backlight source color coordinates corresponding to the reference picture may be determined according to the product relationship between each color coordinate ratio and the standard C light color coordinate in the direction of the corresponding coordinate axis.

[0066] In this embodiment, the candidate backlight color coordinates corresponding to the reference picture can be quickly and accurately determined through the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in each coordinate axis direction and the standard C light color coordinates, that is, the candidate backlight color coordinates matching the candidate LCD color coordinates can be quickly and accurately determined.

[0067] In some embodiments, step 304 of determining the candidate backlight source color coordinates corresponding to the reference picture according to the color coordinate ratios and the standard C light color coordinates includes:

[0068] Determine the tristimulus values ​​corresponding to the standard C light color coordinates; multiply the product of each color coordinate ratio and the tristimulus values ​​corresponding to the standard C light color coordinates in the corresponding coordinate axis direction as the coordinate value of the candidate backlight source color coordinates corresponding to the reference picture in the corresponding coordinate axis direction.

[0069] Among them, the tristimulus values ​​are the expression of the degree of stimulation of the three primary colors that cause the human retina to perceive a certain color. The tristimulus values ​​refer to the three reference color standard quantities required to achieve color matching with the color stimulus to be tested in the red, green and blue color system. They can be expressed by X (red primary color stimulation quantity), Y (green color stimulation quantity) and Z (blue color stimulation quantity).

[0070] Optionally, the product of each color coordinate ratio and the tristimulus value of the standard C light color coordinate in the corresponding coordinate axis direction is used as the candidate backlight color coordinate. For example, if the standard C light color coordinate is (0.31, 0.317) and the tristimulus value of the standard C light is (0.31, 0.317, 0.373), then the corresponding candidate backlight color coordinate is (0.31*k1, 0.317*k2, 0.373*k3).

[0071] In this embodiment, by multiplying the product of each color coordinate ratio with the three stimulus values ​​corresponding to the standard C light color coordinates in the corresponding coordinate axis direction as the coordinate value of the candidate backlight source color coordinates corresponding to the reference picture in the corresponding coordinate axis direction, the matching between the candidate backlight source color coordinates and the candidate LCD color coordinates can be improved, and the accuracy of the candidate backlight source color coordinates can be improved.

[0072] In an exemplary embodiment, step 204 of determining a candidate backlight effect of a backlight source according to the candidate backlight source color coordinates and the standard backlight source color coordinates includes:

[0073] Determine a standard backlight effect corresponding to the standard backlight source color coordinates; and determine a candidate backlight effect of the backlight source based on the standard backlight effect, the standard backlight source color coordinates, and the candidate backlight source color coordinates.

[0074] The standard backlight effect refers to the light effect of the standard backlight source corresponding to the standard backlight source color coordinates. Optionally, the standard backlight effect can be calculated based on the luminous flux emitted by the standard backlight source and the electric energy consumed by the standard backlight source. The luminous flux emitted by the standard backlight source can be measured by a photometric measuring device, and the electric energy consumed by the standard backlight source can be calculated based on the corresponding voltage or current.

[0075] Optionally, the candidate backlight effect of the backlight source may be determined based on the product of the coordinate value relationship between the standard backlight source color coordinates and the candidate backlight source color coordinates and the standard backlight effect, wherein the coordinate value relationship is, for example, the difference between the corresponding green primary color coordinate difference and the red primary color coordinate difference.

[0076] For example, the standard backlight color coordinates are (0.26, 0.23), E 0.26,0.23It represents the standard backlight effect corresponding to the standard backlight source, and the standard backlight effect can be obtained by measurement. The green-red difference between the candidate backlight source color coordinates and the corresponding green primary color coordinate difference and red primary color coordinate difference in the standard backlight source color coordinates can be determined, and the candidate backlight effect can be determined according to the product between the green-red difference and the standard backlight effect. For example, the sum of the product between the green-red difference and the standard backlight effect and the standard backlight effect can be used as the candidate backlight effect. The product between the green-red difference and the standard backlight effect can also be multiplied by the light effect variation coefficient, and then summed with the backlight effect to obtain the candidate backlight effect. The calculation formula of the candidate backlight effect is shown in the following formula (2).

[0077] Formula (2)

[0078] Wherein, (0.31*k1, 0.317*k2) represents the candidate backlight color coordinates, K is used to represent the coefficient of the proportional relationship between the color coordinates and the light effect change, and K can be determined based on experience or experiments.

[0079] In this embodiment, the candidate backlight effect of the backlight source is determined by using the standard backlight effect, the standard backlight source color coordinates and the candidate backlight source color coordinates, so that the accuracy of the candidate backlight effect can be improved.

[0080] In some embodiments, step 206 of determining a candidate liquid crystal display light effect of the LCD according to the candidate backlight light effect of the backlight source and the transmittance of the LCD to the backlight source includes:

[0081] The product of the candidate backlight effect of the backlight source and the transmittance of the LCD to the backlight source is used as the candidate liquid crystal display effect of the LCD.

[0082] The meaning and calculation method of the transmittance of the LCD to the backlight source can be found in the description of the aforementioned embodiment, and will not be repeated here.

[0083] Exemplarily, the product of the candidate backlight effect of the backlight source and the transmittance of the LCD to the backlight source is used as the candidate liquid crystal display effect of the LCD. The candidate liquid crystal display effect E of the LCD can be calculated by the following formula (3).

[0084] Formula (3)

[0085] In this embodiment, by taking the product of the candidate backlight effect of the backlight source and the transmittance of the LCD to the backlight source as the candidate liquid crystal display effect of the LCD, the accuracy of the candidate liquid crystal display effect can be improved.

[0086] In some embodiments, determining the target liquid crystal display light effect based on the candidate liquid crystal display light effects in step 208 includes:

[0087] A maximum candidate liquid crystal display light effect is selected from all candidate liquid crystal display light effects, and the maximum candidate liquid crystal display light effect is used as a target liquid crystal display light effect.

[0088] There may be multiple candidate liquid crystal display light effects, and the largest candidate liquid crystal display light effect is selected from the multiple candidate liquid crystal display light effects as the target liquid crystal display light effect. Then, the target liquid crystal display light effect corresponds to the maximum brightness of the liquid crystal display device.

[0089] Optionally, the same target liquid crystal display light effect may correspond to multiple candidate LCD color coordinates, and the candidate LCD color coordinates corresponding to the target liquid crystal display light effect are used as the target LCD color coordinates, that is, the target LCD color coordinates may correspond to multiple. According to each target LCD color coordinate, the corresponding target backlight color coordinates can be calculated, and the calculation method of calculating the corresponding target backlight color coordinates according to the target LCD color coordinates can refer to the calculation method of calculating the candidate backlight color coordinates according to the candidate LCD color coordinates in the aforementioned embodiment. Alternatively, the candidate backlight color coordinates corresponding to the target LCD color coordinates can be directly obtained as the target backlight color coordinates. According to each target LCD color coordinate and the corresponding target backlight color coordinate, the brightness corresponding to the target liquid crystal display light effect can be configured. That is to say, after determining the target liquid crystal display light effect, the target LCD color coordinate range and the corresponding target backlight color coordinate range corresponding to the target liquid crystal display light effect can be determined. For example, the target LCD color coordinate range includes the x-coordinate range and y-coordinate range of the LCD, the x-coordinate range of the LCD includes [0.272, 0.275] or [0.285, 0.289], the y-coordinate range of the LCD includes [0.341, 0.345] or [0.361, 0.365], etc. The corresponding target backlight color coordinates include the x-coordinate range and y-coordinate range of the LED, the x-coordinate range of the LED includes [0.261, 0.267], the y-coordinate range of the LED includes [0.195, 0.20] or [0.226, 0.232], etc.

[0090] In this embodiment, by selecting the largest candidate liquid crystal display light effect from all candidate liquid crystal display light effects and taking the largest candidate liquid crystal display light effect as the target liquid crystal display light effect, the color coordinate range of the corresponding LCD and backlight source can be determined to configure the maximum brightness of the liquid crystal display device, thereby maximizing the brightness of the liquid crystal display device.

[0091] In an exemplary embodiment, as shown in FIG. 4 , the brightness configuration method includes the following steps 402 to 416 .

[0092] Step 402 , obtaining candidate LCD color coordinates of a reference picture displayed by the LCD under a backlight source, standard C light color coordinates, and reference LCD color coordinates of a reference picture displayed under standard C light.

[0093] Step 404, determining the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in the directions of each coordinate axis, and obtaining each color coordinate ratio.

[0094] Step 406, determine the tristimulus values ​​corresponding to the standard C light color coordinates; and use the product of each color coordinate ratio and the tristimulus values ​​corresponding to the standard C light color coordinates in the corresponding coordinate axis direction as the coordinate value of the candidate backlight source color coordinates corresponding to the reference picture in the corresponding coordinate axis direction.

[0095] Step 408: Determine the standard backlight effect corresponding to the standard backlight source color coordinates.

[0096] Step 410 : determining a candidate backlight effect of the backlight source based on the standard backlight effect, the standard backlight source color coordinates, and the candidate backlight source color coordinates.

[0097] Step 412: taking the product of the candidate backlight effect of the backlight source and the transmittance of the LCD to the backlight source as the candidate liquid crystal display effect of the LCD.

[0098] Step 414 , selecting the largest candidate liquid crystal display light effect from all candidate liquid crystal display light effects, and taking the largest candidate liquid crystal display light effect as the target liquid crystal display light effect.

[0099] Step 416 , configuring the maximum brightness corresponding to the liquid crystal display device based on the target LCD color coordinates corresponding to the target liquid crystal display light effect and the target backlight color coordinates of the backlight source.

[0100] For example, if the candidate LCD color coordinates are (x, y, z) and the reference LCD color coordinates are (x1, y1, z1), then the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in the x direction is k1=x / x1, the ratio in the y direction is k2=y / y1, and the ratio in the z direction is k3=z / z1, that is, the ratios of the color coordinates are k1, k2, and k3. If the standard C light color coordinates are (0.31, 0.317), and the tristimulus values ​​of the standard C light are (0.31, 0.317, 0.373), then the corresponding candidate backlight color coordinates are (0.31*k1, 0.317*k2, 0.373*k3). If the standard backlight color coordinates are (0.26, 0.23), E 0.26,0.23 The standard backlight effect corresponding to the standard backlight source is represented by the calculation formula of the candidate backlight effect as shown in the following formula (4).

[0101] Formula (4)

[0102] Wherein, K is used to represent the coefficient of the proportional relationship between the color coordinate and the light effect change, and K can be determined based on experience or experiments.

[0103] Assuming that the y coordinate of the backlight color coordinate is 0.34, the LCD transmittance is 1. Indicates the transmittance of the LCD when the y coordinate is 0.34, the transmittance of the LCD to the backlight source It can be calculated by the following formula (5).

[0104] Formula (5)

[0105] The product of the candidate backlight effect of the backlight source and the transmittance of the LCD to the backlight source is used as the candidate liquid crystal display effect of the LCD. The candidate liquid crystal display effect E of the LCD can be calculated by the following formula (6).

[0106] Formula (6)

[0107] According to the above formula (6), the candidate LCD display light effects corresponding to all the candidate LCD color coordinates can be calculated, and then the maximum value is determined from all the candidate LCD display light effects as the target LCD display light effect. Based on the candidate LCD color coordinates and the candidate backlight color coordinates corresponding to the target LCD display light effect, the maximum brightness of the LCD display device can be configured.

[0108] In the above embodiment, the candidate backlight color coordinates corresponding to the candidate LCD color coordinates are calculated, the candidate backlight lighting effects of the backlight source are determined according to the candidate backlight color coordinates and the standard backlight color coordinates, the candidate liquid crystal display lighting effects of the LCD are determined according to the candidate backlight lighting effects, and then the target liquid crystal display lighting effect with the maximum lighting effect is determined from multiple candidate liquid crystal display lighting effects. Based on the candidate LCD color coordinates corresponding to the target liquid crystal display lighting effect and the candidate backlight color coordinates matching the candidate LCD color coordinates, the maximum brightness of the liquid crystal display device can be accurately configured, thereby achieving accurate configuration of the brightness.

[0109] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a part of the steps or stages in other steps.

[0110] Based on the same inventive concept, the embodiment of the present application also provides a brightness configuration device for implementing the brightness configuration method involved above. The implementation solution provided by the device to solve the problem is similar to the implementation solution recorded in the above method, so the specific limitations in one or more brightness configuration device embodiments provided below can refer to the limitations on the brightness configuration method above, and will not be repeated here.

[0111] In an exemplary embodiment, as shown in FIG5 , a brightness configuration device is provided, including: a backlight color coordinate determination module 502, a backlight light effect determination module 504, a liquid crystal display light effect determination module 506 and a brightness configuration module 508, wherein:

[0112] The backlight color coordinate determination module 502 is used to obtain the candidate LCD color coordinates of the LCD displaying the reference picture under the backlight, the standard C light color coordinates, and the reference LCD color coordinates of the reference picture displayed under the standard C light, and determine the candidate backlight color coordinates corresponding to the reference picture according to the candidate LCD color coordinates, the standard C light color coordinates, and the reference LCD color coordinates;

[0113] A backlight effect determination module 504 is used to determine a candidate backlight effect of the backlight source according to the candidate backlight color coordinates and the standard backlight color coordinates;

[0114] The liquid crystal display light effect determination module 506 is used to determine the candidate liquid crystal display light effects of the LCD according to the candidate backlight light effects of the backlight source and the transmittance of the LCD to the backlight source;

[0115] The brightness configuration module 508 is used to determine the target LCD display light effect based on the candidate LCD display light effects, and configure the target brightness corresponding to the LCD display device based on the target LCD color coordinates corresponding to the target LCD display light effect and the target backlight color coordinates of the backlight source.

[0116] In some embodiments, the backlight source color coordinate determination module 502 is further used to determine the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in each coordinate axis direction to obtain each color coordinate ratio; and determine the candidate backlight source color coordinates corresponding to the reference picture according to each color coordinate ratio and the standard C light color coordinates.

[0117] In some embodiments, the backlight source color coordinate determination module 502 is further used to determine the tristimulus values ​​corresponding to the standard C light color coordinates; and the product of each color coordinate ratio and the tristimulus values ​​corresponding to the standard C light color coordinates in the direction of the corresponding coordinate axis is used as the coordinate value of the candidate backlight source color coordinates corresponding to the reference picture in the direction of the corresponding coordinate axis.

[0118] In some embodiments, the backlight effect determination module 504 is further used to determine the standard backlight effect corresponding to the standard backlight color coordinates; and determine the candidate backlight effect of the backlight source based on the standard backlight effect, the standard backlight color coordinates and the candidate backlight color coordinates.

[0119] In some embodiments, the liquid crystal display light effect determination module 506 is further configured to use the product of the candidate backlight light effect of the backlight source and the transmittance of the LCD to the backlight source as the candidate liquid crystal display light effect of the LCD.

[0120] In some embodiments, the brightness configuration module 508 is further configured to select the largest candidate liquid crystal display light effect from all candidate liquid crystal display light effects, and use the largest candidate liquid crystal display light effect as the target liquid crystal display light effect.

[0121] Each module in the brightness configuration device can be implemented in whole or in part by software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in the form of hardware, or can be stored in a memory in a computer device in the form of software, so that the processor can call and execute operations corresponding to each module.

[0122] In an exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be shown in FIG6. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, the memory, and the input / output interface are connected via a system bus, and the communication interface, the display unit, and the input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner may be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a brightness configuration method is implemented. The display unit of the computer device is used to form a visually visible picture, which may be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device shell, or an external keyboard, touchpad or mouse.

[0123] Those skilled in the art will understand that the structure shown in FIG. 6 is merely a block diagram of a partial structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different arrangement of components.

[0124] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the steps of the brightness configuration method in the above embodiment are implemented.

[0125] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the brightness configuration method in the above embodiment are implemented.

[0126] In one embodiment, a computer program product is provided, including a computer program, which implements the steps of the brightness configuration method in the above embodiment when executed by a processor.

[0127] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0128] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0129] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0130] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A brightness configuration method, characterized in that: Applied to a liquid crystal display device, the liquid crystal display device includes a liquid crystal display LCD and a backlight source, and the method includes: Acquire candidate LCD color coordinates, standard C light color coordinates, and reference LCD color coordinates of the reference picture displayed by the LCD under the backlight source, and determine candidate backlight color coordinates corresponding to the reference picture according to the candidate LCD color coordinates, the standard C light color coordinates, and the reference LCD color coordinates; Determining a candidate backlight effect of the backlight source according to the candidate backlight source color coordinates and the standard backlight source color coordinates; Determining a candidate liquid crystal display light effect of the LCD according to the candidate backlight light effects of the backlight source and the transmittance of the LCD to the backlight source; A target liquid crystal display light effect is determined based on the candidate liquid crystal display light effects, and a target brightness corresponding to the liquid crystal display device is configured based on a target LCD color coordinate corresponding to the target liquid crystal display light effect and a target backlight color coordinate of the backlight source.

2. The method according to claim 1, characterized in that The step of determining the candidate backlight source color coordinates corresponding to the reference picture according to the candidate LCD color coordinates, the standard C light color coordinates and the reference LCD color coordinates includes: Determine the ratio of the candidate LCD color coordinates to the reference LCD color coordinates in each coordinate axis direction to obtain each color coordinate ratio; The candidate backlight source color coordinates corresponding to the reference picture are determined according to the color coordinate ratios and the standard C light color coordinates.

3. The method according to claim 2, characterized in that The step of determining the candidate backlight source color coordinates corresponding to the reference picture according to the color coordinate ratios and the standard C light color coordinates includes: Determine the tristimulus values ​​corresponding to the standard C light color coordinates; The product of each color coordinate ratio and the tristimulus value corresponding to the standard C light color coordinate in the corresponding coordinate axis direction is used as the coordinate value of the candidate backlight source color coordinate corresponding to the reference picture in the corresponding coordinate axis direction.

4. The method according to claim 1, characterized in that: The step of determining the candidate backlight effect of the backlight source according to the candidate backlight source color coordinates and the standard backlight source color coordinates includes: Determine the standard backlight effect corresponding to the standard backlight source color coordinates; Based on the standard backlight effect, the standard backlight source color coordinates and the candidate backlight source color coordinates, a candidate backlight effect of the backlight source is determined.

5. The method according to claim 1, characterized in that The step of determining a candidate liquid crystal display light effect of the LCD according to the candidate backlight light effect of the backlight source and the transmittance of the LCD to the backlight source comprises: The product of the candidate backlight effect of the backlight source and the transmittance of the LCD to the backlight source is used as the candidate liquid crystal display effect of the LCD.

6. The method according to claim 1, characterized in that The determining a target liquid crystal display light effect based on the candidate liquid crystal display light effect comprises: A maximum candidate liquid crystal display light effect is selected from all candidate liquid crystal display light effects, and the maximum candidate liquid crystal display light effect is used as a target liquid crystal display light effect.

7. A brightness configuration device, characterized in that: The device comprises: a backlight color coordinate determination module, configured to obtain candidate LCD color coordinates, standard C light color coordinates, and reference LCD color coordinates for displaying the reference picture under the standard C light of the LCD when the LCD displays the reference picture under the backlight, and determine candidate backlight color coordinates corresponding to the reference picture according to the candidate LCD color coordinates, the standard C light color coordinates, and the reference LCD color coordinates; A backlight effect determination module, used to determine the candidate backlight effect of the backlight source according to the candidate backlight color coordinates and the standard backlight color coordinates; A liquid crystal display light effect determination module, used to determine a candidate liquid crystal display light effect of the LCD according to the candidate backlight light effects of the backlight source and the transmittance of the LCD to the backlight source; A brightness configuration module is used to determine a target liquid crystal display light effect based on the candidate liquid crystal display light effects, and to configure a target brightness corresponding to the liquid crystal display device based on a target LCD color coordinate corresponding to the target liquid crystal display light effect and a target backlight color coordinate of the backlight source.

8. A liquid crystal display device, comprising a memory and a processor, wherein the memory stores a computer program, characterized in that: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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