CN111583876B - Backlight module preparation method and device - Google Patents
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- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
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Abstract
The embodiment of the application provides a backlight module preparation method and a device, wherein the backlight module preparation method comprises the steps of obtaining a target color saturation visual angle of a display module; the display module comprises a liquid crystal display panel and a backlight module; obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle, and preparing a backlight module according to the target backlight brightness visual angle; when the color saturation visual angle of the liquid crystal display panel needs to be changed, a target color saturation visual angle is obtained, then a target backlight brightness visual angle is obtained according to the target color saturation visual angle, and then the backlight module is prepared according to the target backlight brightness visual angle, so that the color saturation visual angle can be changed and the color cast can be improved by changing the backlight brightness visual angle in the backlight module without changing the manufacturing process of the display panel, and the technical problems of complex manufacturing process and low yield of the existing VA type liquid crystal display panel improvement method are solved.
Description
Technical Field
The present disclosure relates to display technologies, and in particular, to a method and an apparatus for manufacturing a backlight module.
Background
The display modes of the conventional liquid crystal display panel include TN (Twisted Nematic), IPS (In-Plane Switching), and VA (Vertical Alignment), which are widely used due to high contrast, fast response time, and no rubbing Alignment, but the VA liquid crystal display panel has a color shift problem and poor picture quality In a side view, and during the use of the VA liquid crystal display panel, there is a requirement on a viewing angle, and the color saturation viewing angle of the liquid crystal display panel needs to be modified, so the VA liquid crystal display panel needs to be improved, but the conventional improvement process is complicated, and the yield is low.
Therefore, the conventional method for improving the VA type liquid crystal display panel has the technical problems of complex manufacturing process and low yield.
Disclosure of Invention
The embodiment of the application provides a method and a device for preparing a backlight module, which are used for solving the technical problems of complex manufacturing process and low yield in the existing method for improving a VA type liquid crystal display panel.
The embodiment of the application provides a backlight module preparation method, which comprises the following steps:
acquiring a target color saturation visual angle of the display module; the display module comprises a liquid crystal display panel and a backlight module;
obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle;
and preparing a backlight module according to the target backlight brightness visual angle.
In some embodiments, the step of obtaining a target color saturation viewing angle of the display module includes:
acquiring the target side-looking color saturation of the liquid crystal display panel;
acquiring the target front vision color saturation of the liquid crystal display panel;
and obtaining the target color saturation visual angle according to the target side view color saturation and the target front view color saturation.
In some embodiments, the step of obtaining a target backlight brightness viewing angle corresponding to the target color saturation viewing angle according to the target color saturation viewing angle includes:
acquiring a backlight factor in a backlight module;
adjusting the backlight factors to obtain color saturation visual angles corresponding to the backlight factors;
obtaining a backlight brightness visual angle having a specific relation with the color saturation visual angle according to the variation relation between the backlight factor and the color saturation visual angle;
and obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle and the specific relation.
In some embodiments, the step of obtaining a backlight brightness viewing angle having a specific relationship with a color saturation viewing angle according to a variation relationship between the backlight factor and the color saturation viewing angle includes:
setting at least two different skin color combinations; the skin color combination comprises red sub-pixels, green sub-pixels and blue sub-pixels with different gray scales;
testing the variation relation between the backlight factor and the color saturation visual angle by using the skin color combination;
determining a backlight brightness visual angle having a specific relation with the color saturation visual angle according to the change relation between the backlight factor and the color saturation visual angle;
and obtaining the specific relation according to the change of the backlight brightness visual angle and the color saturation visual angle.
In some embodiments, the step of testing the backlight factor for a varying relationship to color saturation viewing angle using the skin tone combination comprises:
changing a backlight factor corresponding to each skin color combination to obtain a color saturation visual angle corresponding to the backlight factor;
and obtaining the change relation between the backlight factor and the color saturation visual angle according to the backlight factor and the color saturation visual angle corresponding to the backlight factor.
In some embodiments, the step of deriving the specific relationship based on the change in the backlight brightness viewing angle and the color saturation viewing angle comprises:
changing the backlight brightness visual angle to obtain a color saturation visual angle corresponding to the backlight brightness visual angle;
obtaining the influence proportion of the color saturation visual angle according to the color saturation visual angle corresponding to the backlight brightness visual angle;
according to the influence ratio of the backlight brightness visual angle and the color saturation visual angle, performing formula fitting on the backlight brightness visual angle and the color saturation visual angle;
and obtaining the specific relation between the backlight brightness visual angle and the color saturation visual angle according to formula fitting of the backlight brightness visual angle and the color saturation visual angle.
In some embodiments, the step of preparing a backlight module according to the target backlight brightness viewing angle includes:
obtaining change parameters of a diffusion sheet in the backlight module according to the target backlight brightness visual angle;
and changing the diffusion sheet according to the changed parameters of the diffusion sheet, and preparing the backlight module.
In some embodiments, the step of preparing a backlight module according to the target backlight brightness viewing angle includes:
obtaining the change parameters of the prism lens in the backlight module according to the target backlight brightness visual angle;
and changing the prism sheet according to the change parameters of the prism sheet, and preparing the backlight module.
In some embodiments, the step of preparing a backlight module according to the target backlight brightness viewing angle includes:
determining that the backlight brightness visual angle needs to be reduced or increased according to the target backlight brightness visual angle;
when the backlight brightness visual angle needs to be reduced, the prism sheet in the backlight module is changed to prepare the backlight module;
and when the backlight brightness visual angle needs to be improved, changing the diffusion sheet in the backlight module to prepare the backlight module.
Meanwhile, an embodiment of the present application provides a backlight unit manufacturing apparatus, which includes:
the first acquisition module is used for acquiring a target color saturation visual angle of the display module; the display module comprises a liquid crystal display panel and a backlight module;
the second acquisition module is used for obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle;
and the preparation module is used for preparing the backlight module according to the target backlight brightness visual angle.
Has the advantages that: the embodiment of the application provides a backlight module preparation method and a device, wherein the backlight module preparation method comprises the steps of obtaining a target color saturation visual angle of a display module; the display module comprises a liquid crystal display panel and a backlight module; obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle, and preparing a backlight module according to the target backlight brightness visual angle; when the color saturation visual angle of the liquid crystal display panel needs to be changed, a target color saturation visual angle is obtained, then a target backlight brightness visual angle is obtained according to the target color saturation visual angle, and then the backlight module is prepared according to the target backlight brightness visual angle, so that the color saturation visual angle can be changed and the color cast can be improved by changing the backlight brightness visual angle in the backlight module without changing the manufacturing process of the display panel, and the technical problems of complex manufacturing process and low yield of the existing VA type liquid crystal display panel improvement method are solved.
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The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a flowchart of a method for manufacturing a backlight module according to an embodiment of the present disclosure.
Fig. 2 is a graph showing standard luminance and gray scale in front view and side view of a conventional liquid crystal display panel.
FIG. 3 is a diagram of a system for characterizing color saturation of a liquid crystal display device according to an embodiment of the present application.
Fig. 4 is a first comparison diagram of a color saturation viewing angle of a first skin color combination in an existing liquid crystal display panel and a color saturation viewing angle of a first skin color combination in a liquid crystal display device in an embodiment of the present application.
Fig. 5 is a first comparison diagram of a color saturation viewing angle of a third skin color combination in an existing liquid crystal display panel and a color saturation viewing angle of a third skin color combination in a liquid crystal display device in an embodiment of the present application.
Fig. 6 is a second comparison graph of the color saturation viewing angle of the first skin color combination of the conventional liquid crystal display panel and the color saturation viewing angle of the first skin color combination of the liquid crystal display device in the embodiment of the present application.
Fig. 7 is a second comparison diagram of a color saturation viewing angle of a third skin color combination in a conventional liquid crystal display panel and a color saturation viewing angle of a third skin color combination in a liquid crystal display device in an embodiment of the present application.
Fig. 8 is a comparison diagram of an influence ratio of a backlight luminance viewing angle to a color saturation viewing angle of a liquid crystal display device according to an embodiment of the present application.
Fig. 9 is a diagram illustrating a relationship between a viewing angle change ratio of backlight brightness and a viewing angle change ratio of color saturation according to an embodiment of the present application.
Fig. 10 is a schematic view of a backlight module manufacturing apparatus according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. 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, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
The embodiment of the application aims at the technical problems of complex manufacturing process and low yield existing in the existing VA type liquid crystal display panel improving method, and the embodiment of the application is used for solving the problems.
As shown in fig. 1, an embodiment of the present application provides a method for manufacturing a backlight module, including:
s1, acquiring a target color saturation visual angle of the display module; the display module comprises a liquid crystal display panel and a backlight module;
s2, obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle;
and S3, preparing the backlight module according to the target backlight brightness visual angle.
The embodiment of the application provides a backlight module preparation method and a device, wherein the backlight module preparation method comprises the steps of obtaining a target color saturation visual angle of a display module; the display module comprises a liquid crystal display panel and a backlight module; obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle, and preparing a backlight module according to the target backlight brightness visual angle; when the color saturation visual angle of the liquid crystal display panel needs to be changed, a target color saturation visual angle is obtained, then a target backlight brightness visual angle is obtained according to the target color saturation visual angle, and then the backlight module is prepared according to the target backlight brightness visual angle, so that the color saturation visual angle can be changed and the color cast can be improved by changing the backlight brightness visual angle in the backlight module without changing the manufacturing process of the display panel, and the technical problems of complex manufacturing process and low yield of the existing VA type liquid crystal display panel improvement method are solved.
As shown in fig. 2, among the standard luminance and gray scale curves of the conventional lcd panel in front and side views, curve 1 is the standard luminance and gray scale curve of the lcd panel in front view, curve 2 is the standard luminance and gray scale curve of the lcd panel, the abscissa in fig. 2 is the gray scale, the size is from 0 to 255, and the ordinate in fig. 2 is the standard luminance, the size is from 0 to 1; any picture is selected, the gray scale of the red sub-pixel is 220, the gray scale of the green sub-pixel is 150, the gray scale of the blue sub-pixel is 100 in front view, the gray scale of the red sub-pixel is 215 in side view, the gray scale of the green sub-pixel is 192 in side view, and the gray scale of the blue sub-pixel is 176 in side view, so that color cast occurs on the picture seen in front view and side view, and as can be seen from fig. 2, when the gray scale is low, the color cast of the front view and the side view is larger, and the yellow color in side view is whitened, so that the color saturation viewing angle of the liquid crystal display panel needs to be modified in the using process of the VA type liquid crystal display panel.
As shown in FIG. 3, the color saturation of the LCD device in the embodiment of the present application is characterized by using the CIE1976Lab system, wherein L represents the psychological brightness, a and b represent the psychological chromaticity, in the coordinate system, + a represents red, -a represents green, -b represents yellow, -b represents blue, curve 1 in FIG. 3 is a side-view saturation curve, curve 2 in FIG. 3 is a front-view saturation curve, and the side-view saturation is represented by CSide viewExpressed in the normal visual saturation degree of CFront viewWhen it is expressed, the saturation C is (a)2+b2)0.5Color saturation viewing angle Dc ═ CSide view/CFront view。
In an embodiment, the step of obtaining a target color saturation viewing angle of the display module includes:
acquiring the target side-looking color saturation of the liquid crystal display panel;
acquiring the target front vision color saturation of the liquid crystal display panel;
obtaining a target color saturation visual angle according to the target side view color saturation and the target front view color saturation; the target saturation visual angle can be obtained by acquiring the target side-looking color saturation firstly, then acquiring the target front-looking color saturation, and dividing the target side-looking color saturation by the target front-looking color saturation according to the target side-looking color saturation and the target front-looking color saturation.
In an embodiment, the step of obtaining a target backlight brightness viewing angle corresponding to the target color saturation viewing angle according to the target color saturation viewing angle includes:
acquiring a backlight factor in a backlight module;
adjusting the backlight factors to obtain color saturation visual angles corresponding to the backlight factors;
obtaining a backlight brightness visual angle having a specific relation with the color saturation visual angle according to the variation relation between the backlight factor and the color saturation visual angle;
obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle and the specific relation; when the target backlight brightness corresponding to the target color saturation visual angle is obtained, the specific relation between the backlight brightness visual angle and the color saturation visual angle needs to be determined firstly, the backlight brightness visual angle with the specific relation with the color saturation can be found out according to the changing relation between the backlight factor and the color saturation visual angle by testing each backlight factor in the backlight module and adjusting the backlight factor and checking how the color saturation visual angle changes when the backlight factor changes, and the target backlight brightness visual angle is obtained according to the target color saturation visual angle and the specific relation, so that the target backlight brightness visual angle can be obtained by changing the backlight brightness visual angle when the color saturation visual angle needs to be changed.
In an embodiment, the step of obtaining a backlight luminance viewing angle having a specific relationship with a color saturation viewing angle according to a variation relationship between the backlight factor and the color saturation viewing angle includes:
setting at least two different skin color combinations; the skin color combination comprises red sub-pixels, green sub-pixels and blue sub-pixels with different gray scales;
testing the variation relation between the backlight factor and the color saturation visual angle by using the skin color combination;
determining a backlight brightness visual angle having a specific relation with the color saturation visual angle according to the change relation between the backlight factor and the color saturation visual angle;
obtaining the specific relation according to the change of the backlight brightness visual angle and the color saturation visual angle; when a backlight brightness visual angle having a specific relation with a color saturation visual angle needs to be found, at least two different skin color combinations can be set, namely a red sub-pixel, a green sub-pixel and a blue sub-pixel of different gray scales are set, then a backlight factor and the color saturation visual angle are correspondingly tested according to the skin color combinations to obtain the backlight factor having the specific relation with the color saturation visual angle, and then the specific relation is obtained according to the change of the backlight brightness visual angle and the color saturation visual angle.
In one embodiment, the step of setting at least two different combinations of skin tones comprises:
setting a first skin color combination, wherein the first skin color combination comprises a red sub-pixel with a gray scale of 133, a green sub-pixel with a gray scale of 101 and a blue sub-pixel with a gray scale of 75;
setting a second skin color combination, wherein the second skin color combination comprises a red sub-pixel with a gray scale of 192, a green sub-pixel with a gray scale of 156 and a blue sub-pixel with a gray scale of 129;
setting a third skin color combination, wherein the third skin color combination comprises a red sub-pixel with a gray scale of 186, a green sub-pixel with a gray scale of 161 and a blue sub-pixel with a gray scale of 143;
setting a fourth skin color combination, wherein the fourth skin color combination comprises a red sub-pixel with a gray scale of 211, a green sub-pixel with a gray scale of 153 and a blue sub-pixel with a gray scale of 126;
| red sub-pixel gray scale | Green sub-pixel gray scale | Blue sub-pixel gray scale | |
| First skin color combination | 133 | 101 | 75 |
| Second |
192 | 156 | 129 |
| Third skin color combination | 186 | 161 | 143 |
| Fourth skin color combination | 211 | 153 | 126 |
As shown in table one, four skin color combinations are set, and then the relationship between the backlight factor of the four skin color combinations and the color saturation viewing angle is analyzed, so as to obtain the backlight factor having a specific relationship with the color saturation viewing angle.
In one embodiment, the step of testing the backlight factor versus color saturation viewing angle variation using the skin tone combination comprises:
changing a backlight factor corresponding to each skin color combination to obtain a color saturation visual angle corresponding to the backlight factor;
obtaining a change relation between the backlight factor and the color saturation visual angle according to the backlight factor and the color saturation visual angle corresponding to the backlight factor; and obtaining a color saturation visual angle corresponding to the backlight factor by changing the backlight factor corresponding to each skin color combination, thereby obtaining the change relation between each backlight factor and the color saturation visual angle according to the change of the backlight factor and the color saturation visual angle.
In one embodiment, the step of obtaining, according to the skin color combination, a backlight factor corresponding to the skin color combination and a color saturation viewing angle corresponding to the backlight factor corresponding to the skin color combination includes:
according to the first skin color combination, acquiring a first backlight factor corresponding to the first skin color combination and a first color saturation visual angle corresponding to the first backlight factor;
according to the third skin color combination, a third backlight factor corresponding to the third skin color combination and a third color saturation visual angle corresponding to the third backlight factor are obtained; corresponding to the first skin color combination, a first backlight factor and a first color saturation visual angle can be obtained; and corresponding to the third skin color combination, a third backlight factor and a third color saturation visual angle can be obtained, so that corresponding analysis is carried out to obtain the backlight factor having a specific relation with the color saturation visual angle.
In one embodiment, the step of obtaining the backlight factor having a specific relationship with the color saturation viewing angle according to the relationship between the color saturation viewing angle and the backlight factor comprises:
obtaining a first backlight brightness visual angle having a specific relation with a first color saturation visual angle according to the first color saturation visual angle corresponding to the first skin color combination and a first backlight factor corresponding to the first skin color combination;
obtaining a third backlight brightness visual angle having a specific relation with a third color saturation visual angle according to a third color saturation visual angle corresponding to the third skin color combination and a third backlight factor corresponding to the third skin color combination; and respectively obtaining a first backlight brightness visual angle having a specific relation with the first color saturation visual angle and a third backlight brightness visual angle having a specific relation with the third color saturation visual angle by analyzing the first skin color combination and the third skin color combination, thereby determining that the backlight brightness visual angle has the specific relation with the color saturation.
In an embodiment, the step of obtaining the specific relationship according to the change of the backlight brightness viewing angle and the color saturation viewing angle includes:
changing the backlight brightness visual angle to obtain a color saturation visual angle corresponding to the backlight brightness visual angle;
obtaining the influence proportion of the color saturation visual angle according to the color saturation visual angle corresponding to the backlight brightness visual angle;
according to the influence ratio of the backlight brightness visual angle and the color saturation visual angle, performing formula fitting on the backlight brightness visual angle and the color saturation visual angle;
obtaining a specific relation between the backlight brightness visual angle and the color saturation visual angle according to formula fitting of the backlight brightness visual angle and the color saturation visual angle; when a specific relation needs to be determined, changing a backlight brightness visual angle, then obtaining a color saturation visual angle corresponding to the backlight brightness visual angle, then obtaining the influence proportion of the backlight brightness visual angle to the color saturation visual angle according to the change of the color saturation visual angle, and then carrying out formula fitting on the backlight brightness visual angle and the color saturation visual angle according to the influence proportion of the backlight brightness visual angle and the backlight brightness visual angle to the color saturation visual angle, thereby obtaining the specific relation between the backlight brightness visual angle and the color saturation visual angle.
It should be noted that the influence ratio of the color saturation viewing angle refers to the influence ratio of the backlight brightness viewing angle to the color saturation viewing angle.
In one embodiment, the step of obtaining a first backlight brightness viewing angle having a specific relationship with a first color saturation viewing angle according to a first color saturation viewing angle corresponding to the first skin color combination and a first backlight factor corresponding to the first skin color combination includes:
changing the first backlight brightness visual angle to obtain a second color saturation visual angle corresponding to the first backlight brightness visual angle;
obtaining an influence proportion of a first color saturation visual angle corresponding to a first backlight brightness visual angle according to the second color saturation visual angle;
obtaining a specific relation between the first backlight brightness visual angle and the first color saturation visual angle according to the influence ratio of the first backlight brightness visual angle and the first color saturation visual angle; after the specific relation between the backlight brightness visual angle and the color saturation is determined, the specific relation between the backlight brightness visual angle and the color saturation visual angle needs to be found out, and the specific relation between the first backlight brightness visual angle and the first color saturation visual angle is obtained by analyzing the influence proportion of the first backlight brightness visual angle and the first color saturation visual angle.
In an embodiment, the third skin color combination may be further analyzed to obtain a specific relationship between a third backlight luminance viewing angle and a third color saturation viewing angle, thereby determining the relationship between the color saturation and the backlight luminance viewing angle.
In one embodiment, as shown in fig. 4, the present application provides a comparison graph of the color saturation viewing angle of the first skin color combination in the existing liquid crystal display panel and the color saturation viewing angle of the first skin color combination of the liquid crystal display device of the present application, wherein the abscissa a in fig. 4 is the viewing angle of the liquid crystal display device viewed by the viewer, the viewing angle is 0 degree when viewing the front panel, the viewing angle is 0 to 90 degrees when viewing the liquid crystal display device from the right side, the viewing angle is 0 to-90 degrees when viewing the liquid crystal display device from the left side, the ordinate Dc in fig. 4 is the color saturation viewing angle in the above embodiment, the broken line 1 in fig. 4 is the broken line of the first color saturation viewing angle of the first skin color combination in the existing liquid crystal display panel, the broken line 2 in fig. 4 is the broken line of the first color saturation viewing angle of the first skin color combination in the liquid crystal display device of the present application, in the present application, the first backlight brightness visual angle of the first skin color combination is reduced, namely the light type is narrowed, and the first color saturation visual angle Dc can be seen to be reduced, namely the color saturation in the side view is reduced, so that the color cast in the side view is serious;
as shown in fig. 5, the present embodiment provides a comparison graph of the color saturation viewing angle of the third skin color combination in the conventional liquid crystal display panel and the third color saturation viewing angle of the third skin color combination of the liquid crystal display device of the present application, where the abscissa a in fig. 5 is the viewing angle of the liquid crystal display device viewed by the viewer, the viewing angle is 0 degree when viewing the front panel, the viewing angle is 0 to 90 degrees when viewing the liquid crystal display device from the right side, the viewing angle is 0 to-90 degrees when viewing the liquid crystal display device from the left side, the ordinate Dc in fig. 5 is the color saturation viewing angle in the above-described embodiment, the broken line 1 in fig. 5 is the broken line of the color saturation viewing angle of the third skin color combination in the conventional liquid crystal display panel, the broken line 2 in fig. 5 is the broken line of the third color saturation viewing angle of the third skin color combination of the liquid crystal display device of the present application, in the present embodiment, the third backlight brightness visual angle of the third skin color combination is reduced, namely the light type is narrowed, and the third color saturation visual angle Dc is seen to be reduced, namely the color saturation in the side view is reduced, so that the color cast in the side view is serious;
it should be noted that the curve contrast of the second skin color combination and the fourth skin color combination is similar to that of fig. 5, and therefore, as can be seen from fig. 4 and 5, when the backlight brightness viewing angle is reduced, that is, the light pattern is narrowed, the color saturation viewing angle is reduced, that is, the color saturation of the side view is reduced, and the color shift is serious in the side view.
In one embodiment, as shown in fig. 6, the present application provides a comparison graph of the color saturation viewing angle of the first skin color combination in the existing liquid crystal display panel and the color saturation viewing angle of the first skin color combination of the liquid crystal display device of the present application, where the abscissa a in fig. 6 is the viewing angle of the liquid crystal display device viewed by the viewer, the viewing angle is 0 degree when the panel is viewed frontally, the viewing angle is 0 to 90 degrees when the liquid crystal display device is viewed on the right side, the viewing angle is 0 to-90 degrees when the liquid crystal display device is viewed on the left side, the ordinate Dc in fig. 6 is the color saturation viewing angle in the above embodiment, the broken line 1 in fig. 6 is the broken line of the color saturation viewing angle of the first skin color combination in the existing liquid crystal display panel, the broken line 2 in fig. 6 is the broken line of the first color saturation viewing angle of the first skin color combination of the liquid crystal display device of the present application, in the present application, by reducing the first backlight brightness viewing angle of the first skin color combination, namely widening the light type, the first color saturation viewing angle Dc can be seen to be enlarged, namely the color saturation of the side view is enlarged, and the side view color cast problem is reduced;
as shown in fig. 7, the present embodiment provides a comparison graph of the color saturation viewing angle of the third skin color combination in the conventional liquid crystal display panel and the color saturation viewing angle of the third skin color combination of the liquid crystal display device of the present application, where an abscissa a in fig. 7 is a viewing angle at which a viewer views the liquid crystal display device, a viewing angle at which the viewer views the liquid crystal display device is 0 degree when viewing the front panel, a viewing angle at which the viewer views the liquid crystal display device is 0 to 90 degrees when viewing the liquid crystal display device on the right side, a viewing angle at which the viewer views the liquid crystal display device on the left side is 0 to-90 degrees, an ordinate Dc in fig. 7 is the color saturation viewing angle in the above-described embodiment, a broken line 1 in fig. 7 is a broken line of the color saturation viewing angle of the third skin color combination in the conventional liquid crystal display panel, a broken line 2 in fig. 7 is a broken line of the third color saturation viewing angle of the third skin color combination of the liquid crystal display device, that is, the light pattern becomes wider, and it can be seen that the third color saturation viewing angle Dc becomes larger, that is, the color saturation in the side view becomes larger, and the problem of color shift in the side view becomes smaller.
It should be noted that the curve contrast of the second skin color combination and the fourth skin color combination is similar to that of fig. 7, and therefore, as can be seen from fig. 6 and 7, when the backlight brightness viewing angle is increased, that is, the light pattern is widened, the color saturation viewing angle is increased, that is, the color saturation of the side view is increased, and the color shift of the side view is reduced.
As shown in fig. 8, the embodiment of the present application provides a broken line diagram of the influence ratio of the backlight luminance viewing angle to the color saturation viewing angle of the liquid crystal display device, where an abscissa a in fig. 8 is a viewing angle at which a viewer views the liquid crystal display device, a viewing angle at which a front view panel is viewed is 0 degree, a viewing angle at which a right side views the liquid crystal display device is 0 to 90 degrees, a viewing angle at which a left side views the liquid crystal display device is 0 to-90 degrees, an influence ratio of a ordinate to Dc in fig. 8 is an influence ratio of the backlight luminance viewing angle to the color saturation viewing angle, since the influence ratios of the backlight luminance viewing angles to the color saturation viewing angles of the respective skin color combinations are the same, only fig. 8 is shown, where a broken line 1 in fig. 8 is a broken line of the influence ratio of the backlight luminance viewing angle to the color saturation viewing angle when the backlight luminance viewing angle becomes 1.5 times smaller, and a broken line 2 in fig. 8 is a broken line, a broken line of the influence ratio of the backlight brightness visual angle to the color saturation visual angle, a broken line 3 in fig. 8 is a broken line of the influence ratio of the backlight brightness visual angle to the color saturation visual angle when the backlight brightness visual angle is not changed, a broken line 4 in fig. 8 is a broken line of the influence ratio of the backlight brightness visual angle to the color saturation visual angle when the backlight brightness visual angle is increased by 0.8 times, a broken line 5 in fig. 8 is a broken line of the influence ratio of the backlight brightness visual angle to the color saturation visual angle when the backlight brightness visual angle is increased by 0.667 times, then a formula fitting is carried out on the backlight brightness visual angle and the color saturation visual angle by analyzing fig. 8 to obtain a relational expression in fig. 9 and a specific relation between the backlight brightness visual angle and the color saturation visual angle, an abscissa in fig. 9 is the change ratio of the backlight brightness visual angle, an ordinate in fig. 9 is the change ratio of the color saturation visual angle, a curve 1 in fig. 9 is a, the relation of the curve 1 is that y is 0.3239x +0.6669, where x is the change ratio of the backlight brightness viewing angle and y is the change ratio of the color saturation viewing angle, so that when the VA liquid crystal display panel needs to be changed, the change ratio of the backlight brightness viewing angle is changed according to the change ratio of the color saturation viewing angle which needs to be changed, and thus, the color saturation viewing angle can be changed by changing the backlight brightness viewing angle only, thereby improving the color cast.
In an embodiment, the step of preparing a backlight module according to the target backlight brightness viewing angle includes:
obtaining change parameters of a diffusion sheet in the backlight module according to the target backlight brightness visual angle;
changing the diffusion sheet according to the changed parameters of the diffusion sheet, and preparing a backlight module; when the backlight module needs to be prepared according to the target backlight brightness visual angle, the diffusion sheet can be changed, so that the backlight brightness visual angle is changed, specifically, the change parameters of the diffusion sheet, namely the target parameters of the diffusion sheet, can be obtained according to the target backlight brightness visual angle, and then the diffusion sheet is modified according to the change parameters of the diffusion sheet to prepare the backlight module, so that the color cast can be improved.
In an embodiment, the step of preparing a backlight module according to the target backlight brightness viewing angle includes:
obtaining the change parameters of the prism lens in the backlight module according to the target backlight brightness visual angle;
changing the prism sheet according to the change parameters of the prism sheet, and preparing a backlight module; when the backlight module is required to be prepared according to the target backlight brightness visual angle, the prism sheet can be changed, so that the backlight brightness visual angle is changed, specifically, the change parameters of the prism sheet, namely the target parameters of the prism sheet, can be obtained according to the target backlight brightness visual angle, and then the diffusion sheet is modified according to the change parameters of the prism sheet to prepare the backlight module, so that the color cast can be improved.
In an embodiment, the step of preparing a backlight module according to the target backlight brightness viewing angle includes:
determining that the backlight brightness visual angle needs to be reduced or increased according to the target backlight brightness visual angle;
when the backlight brightness visual angle needs to be reduced, the prism sheet in the backlight module is changed to prepare the backlight module;
when the backlight brightness visual angle needs to be improved, changing a diffusion sheet in the backlight module to prepare the backlight module; when the backlight brightness visual angle needs to be changed to obtain the target backlight brightness visual angle, the backlight brightness visual angle can be reduced through the prism sheet, and the backlight brightness visual angle is improved through the diffusion sheet, so that the backlight module with the target backlight brightness visual angle is obtained, and the color cast is improved.
As shown in fig. 10, an embodiment of the present application provides a backlight module manufacturing apparatus, including:
a first obtaining module 1001, configured to obtain a target color saturation viewing angle of a display module; the display module comprises a liquid crystal display panel and a backlight module;
a second obtaining module 1002, configured to obtain a target backlight brightness viewing angle corresponding to the target color saturation viewing angle according to the target color saturation viewing angle;
and the preparation module 1003 is used for preparing the backlight module according to the target backlight brightness visual angle.
The embodiment of the application provides a backlight module preparation device, and a backlight module preparation method used by the backlight module preparation device comprises the steps of obtaining a target color saturation visual angle of a display module; the display module comprises a liquid crystal display panel and a backlight module; obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle, and preparing a backlight module according to the target backlight brightness visual angle; when the color saturation visual angle of the liquid crystal display panel needs to be changed, a target color saturation visual angle is obtained, then a target backlight brightness visual angle is obtained according to the target color saturation visual angle, and then the backlight module is prepared according to the target backlight brightness visual angle, so that the color saturation visual angle can be changed and the color cast can be improved by changing the backlight brightness visual angle in the backlight module without changing the manufacturing process of the display panel, and the technical problems of complex manufacturing process and low yield of the existing VA type liquid crystal display panel improvement method are solved.
According to the above embodiment:
the embodiment of the application provides a backlight module preparation method and a device, wherein the backlight module preparation method comprises the steps of obtaining a target color saturation visual angle of a display module; the display module comprises a liquid crystal display panel and a backlight module; obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle, and preparing a backlight module according to the target backlight brightness visual angle; when the color saturation visual angle of the liquid crystal display panel needs to be changed, a target color saturation visual angle is obtained, then a target backlight brightness visual angle is obtained according to the target color saturation visual angle, and then the backlight module is prepared according to the target backlight brightness visual angle, so that the color saturation visual angle can be changed and the color cast can be improved by changing the backlight brightness visual angle in the backlight module without changing the manufacturing process of the display panel, and the technical problems of complex manufacturing process and low yield of the existing VA type liquid crystal display panel improvement method are solved.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The method and the device for manufacturing the backlight module provided by the embodiment of the present application are described in detail, and the principle and the implementation manner of the present application are explained by applying specific examples, and the description of the embodiment is only used to help understanding the technical scheme and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (9)
1. A method for manufacturing a backlight module is characterized by comprising the following steps:
acquiring a target color saturation visual angle of the display module; the display module comprises a liquid crystal display panel and a backlight module; the color saturation visual angle is the ratio of the side-looking saturation to the front-looking saturation;
obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle; the method comprises the following steps: acquiring a backlight factor in a backlight module; adjusting the backlight factors to obtain color saturation visual angles corresponding to the backlight factors; obtaining a backlight brightness visual angle having a specific relation with the color saturation visual angle according to the variation relation between the backlight factor and the color saturation visual angle; obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle and the specific relation;
and preparing a backlight module according to the target backlight brightness visual angle.
2. The method of claim 1, wherein the step of obtaining a target color saturation viewing angle of the display module comprises:
acquiring the target side-looking color saturation of the liquid crystal display panel;
acquiring the target front vision color saturation of the liquid crystal display panel;
and obtaining the target color saturation visual angle according to the target side view color saturation and the target front view color saturation.
3. The method for preparing a backlight module according to claim 1, wherein the step of obtaining a backlight luminance viewing angle having a specific relationship with a color saturation viewing angle according to the variation relationship between the backlight factor and the color saturation viewing angle comprises:
setting at least two different skin color combinations; the skin color combination comprises red sub-pixels, green sub-pixels and blue sub-pixels with different gray scales;
testing the variation relation between the backlight factor and the color saturation visual angle by using the skin color combination;
determining a backlight brightness visual angle having a specific relation with the color saturation visual angle according to the change relation between the backlight factor and the color saturation visual angle;
and obtaining the specific relation according to the change of the backlight brightness visual angle and the color saturation visual angle.
4. The method of claim 3, wherein the step of using the skin color combination to test the relationship between the backlight factor and the change in color saturation viewing angle comprises:
changing a backlight factor corresponding to each skin color combination to obtain a color saturation visual angle corresponding to the backlight factor;
and obtaining the change relation between the backlight factor and the color saturation visual angle according to the backlight factor and the color saturation visual angle corresponding to the backlight factor.
5. The method of claim 3, wherein the step of obtaining the specific relationship based on the change in the backlight brightness viewing angle and the color saturation viewing angle comprises:
changing the backlight brightness visual angle to obtain a color saturation visual angle corresponding to the backlight brightness visual angle;
obtaining the influence proportion of the color saturation visual angle according to the color saturation visual angle corresponding to the backlight brightness visual angle;
according to the influence ratio of the backlight brightness visual angle and the color saturation visual angle, performing formula fitting on the backlight brightness visual angle and the color saturation visual angle;
and obtaining the specific relation between the backlight brightness visual angle and the color saturation visual angle according to formula fitting of the backlight brightness visual angle and the color saturation visual angle.
6. The method of claim 1, wherein the step of preparing a backlight module according to the target backlight brightness viewing angle comprises:
obtaining change parameters of a diffusion sheet in the backlight module according to the target backlight brightness visual angle;
and changing the diffusion sheet according to the changed parameters of the diffusion sheet, and preparing the backlight module.
7. The method of claim 1, wherein the step of preparing a backlight module according to the target backlight brightness viewing angle comprises:
obtaining the change parameters of the prism lens in the backlight module according to the target backlight brightness visual angle;
and changing the prism sheet according to the change parameters of the prism sheet, and preparing the backlight module.
8. The method of claim 1, wherein the step of preparing a backlight module according to the target backlight brightness viewing angle comprises:
determining that the backlight brightness visual angle needs to be reduced or increased according to the target backlight brightness visual angle;
when the backlight brightness visual angle needs to be reduced, the prism sheet in the backlight module is changed to prepare the backlight module;
and when the backlight brightness visual angle needs to be improved, changing the diffusion sheet in the backlight module to prepare the backlight module.
9. A backlight module preparation device is characterized by comprising:
the first acquisition module is used for acquiring a target color saturation visual angle of the display module; the display module comprises a liquid crystal display panel and a backlight module; the color saturation visual angle is the ratio of the side-looking saturation to the front-looking saturation;
the second acquisition module is used for obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle; the method comprises the steps of specifically obtaining a backlight factor in a backlight module; adjusting the backlight factors to obtain color saturation visual angles corresponding to the backlight factors; obtaining a backlight brightness visual angle having a specific relation with the color saturation visual angle according to the variation relation between the backlight factor and the color saturation visual angle; obtaining a target backlight brightness visual angle corresponding to the target color saturation visual angle according to the target color saturation visual angle and the specific relation;
and the preparation module is used for preparing the backlight module according to the target backlight brightness visual angle.
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| JP2000250045A (en) * | 1999-02-26 | 2000-09-14 | Sharp Corp | Liquid crystal display device and its production |
| SG153630A1 (en) * | 2003-04-18 | 2009-07-29 | Sharp Kk | Color display device, color compensation method, color compensation program, and storage medium readable by computer |
| JP4337454B2 (en) * | 2003-07-24 | 2009-09-30 | 日本ゼオン株式会社 | Optical compensation film, optical compensation film manufacturing method, optical laminate, and liquid crystal display device |
| CN101435963A (en) * | 2007-11-13 | 2009-05-20 | 奇美电子股份有限公司 | Visual angle adjustable liquid crystal display |
| CN101620833B (en) * | 2008-06-30 | 2011-07-13 | 中华映管股份有限公司 | Display method of liquid crystal display device |
| TWI388220B (en) * | 2009-03-23 | 2013-03-01 | Chunghwa Picture Tubes Ltd | Image processing method capable of reducing color shift |
| CN102460556B (en) * | 2009-06-11 | 2014-07-16 | 夏普株式会社 | Liquid crystal display device having a plurality of pixel electrodes |
| JP5612323B2 (en) * | 2010-01-28 | 2014-10-22 | 株式会社ジャパンディスプレイ | Driving method of image display device |
| CN102621739A (en) * | 2012-03-31 | 2012-08-01 | 深圳市华星光电技术有限公司 | Liquid crystal display device and manufacturing method thereof |
| CN106652950B (en) * | 2016-12-27 | 2017-12-22 | 惠科股份有限公司 | Display visual angle chromatic aberration compensation method and device and liquid crystal display |
| CN106773216A (en) * | 2017-01-13 | 2017-05-31 | 深圳市华星光电技术有限公司 | A kind of liquid crystal display and preparation method thereof |
| KR20180092330A (en) * | 2017-02-08 | 2018-08-20 | 삼성디스플레이 주식회사 | Display apparatus and method of driving the same |
| CN108010492B (en) * | 2017-12-20 | 2019-09-13 | 惠科股份有限公司 | Backlight adjusting method and device of display panel and display device |
| CN208969381U (en) * | 2018-10-29 | 2019-06-11 | 深圳市汇凌信息技术有限公司 | Compensate visual perspective, the TN mould group of color saturation |
| CN109559692B (en) * | 2018-12-11 | 2020-06-23 | 惠科股份有限公司 | Driving method and driving system of display module and display device |
| CN110189717B (en) * | 2019-04-08 | 2021-06-11 | 重庆惠科金渝光电科技有限公司 | Driving method and driving system of display module and display device |
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