CN115019745A - Voltage determination method and voltage determination device - Google Patents
Voltage determination method and voltage determination device Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3607—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
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Abstract
The application provides a voltage determination method and a voltage determination device, the method only needs to obtain n first optical data of a main pixel area through experiments, then n second optical data of an auxiliary pixel area can be obtained through calculation according to the area ratio of the main pixel area to the auxiliary pixel area, then m total optical data of sub-pixels can be obtained through calculation, after the total optical data are obtained, m groups of test performance data can be obtained through direct simulation according to the total optical data, finally, required target test performance data are selected from the test performance data, and finally, required target gamma voltage and target sharing voltage can be determined.
Description
Technical Field
The present disclosure relates to the field of display technologies, and in particular, to a voltage determination method and a voltage determination device.
Background
With the rapid development of panel technology, the industry has put higher requirements on the characteristics of panel viewing angle and the like. For a liquid crystal display panel in a Vertical Alignment (VA) display mode, each sub-pixel is usually set to have 8 domains in two parts in a main pixel region and an auxiliary pixel region to improve a viewing angle, each sub-pixel performs display by a gamma voltage, and further compensates for large viewing angle brightness and chromaticity by adjusting a liquid crystal deflection angle of the auxiliary pixel region by adjusting a shared voltage of the auxiliary pixel region, that is, an SHB voltage. When the values of the gamma voltage and the shared voltage are set at present, after the visual angles and the penetration rates under different combinations of the gamma voltage and the shared voltage are obtained through actual measurement by an experimental method, a group of voltages with comprehensive data meeting the requirement are selected from the visual angles and the penetration rates, but the mode has high labor and time costs, so that the efficiency is low.
Therefore, the conventional liquid crystal display panel has a problem that the efficiency is low when the voltage satisfying the viewing angle condition is determined, and needs to be improved.
Disclosure of Invention
The embodiment of the application provides a voltage determining method and a voltage determining device, which are used for solving the technical problem of low efficiency in determining the voltage meeting the viewing angle condition in the existing liquid crystal display panel.
The embodiment of the application provides a voltage determining method, which is applied to a liquid crystal display panel, wherein the liquid crystal display panel comprises a plurality of sub-pixels, the sub-pixels comprise a main pixel area and an auxiliary pixel area, and the voltage determining method comprises the following steps:
when each sub-pixel in the liquid crystal display panel displays a preset gray scale, acquiring n first optical data of the main pixel region under the control of n gamma voltages respectively, wherein n is an integer greater than 1;
acquiring the area ratio of the main pixel area and the auxiliary pixel area, taking the n gamma voltages as n shared voltages respectively, and acquiring n second optical data of the auxiliary pixel area when each sub-pixel in the liquid crystal display panel displays the preset gray scale and is controlled by the n shared voltages respectively according to the n first optical data and the area ratio;
obtaining m total optical data when each sub-pixel in the liquid crystal display panel is controlled by a gamma voltage and a sharing voltage when displaying the preset gray scale according to the n first optical data and the n second optical data, wherein m is an integer greater than 1;
according to the m total optical data, simulating to obtain m groups of test performance data of the liquid crystal display panel, wherein the test performance data comprises visual angle data and penetration rate data;
and determining required target test performance data from the m groups of test performance data, determining target gamma voltages from the n gamma voltages according to the target test performance data, and determining target shared voltages from the n shared voltages.
In one embodiment, the first optical data, the second optical data, and the total optical data each include tristimulus values.
In one embodiment, the step of acquiring n first optical data of the main pixel region when each sub-pixel in the liquid crystal display panel displays a preset gray scale and is respectively controlled by n gamma voltages includes:
inputting a preset gray scale voltage, a gamma voltage and an initial sharing voltage to the liquid crystal display panel so that each main pixel area displays a preset gray scale and each auxiliary pixel area has the brightness of 0 to obtain k preset pictures, wherein k is a positive integer;
when each gamma voltage is input, acquiring the tristimulus values of the target area of the liquid crystal display panel under a first visual angle and the tristimulus values under a second visual angle when each preset picture is displayed respectively to obtain first optical data.
In one embodiment, the step of obtaining an area ratio between the main pixel area and the auxiliary pixel area, taking the n gamma voltages as n shared voltages respectively, and obtaining n second optical data of the auxiliary pixel area when each sub-pixel in the liquid crystal display panel displays the preset gray scale according to the n first optical data and the area ratio, when the auxiliary pixel area is controlled by the n shared voltages respectively, includes:
acquiring the area ratio of the main pixel area to the auxiliary pixel area;
and dividing the tristimulus value of each first optical data by the area ratio to obtain the corresponding tristimulus value of the second optical data.
In one embodiment, the step of obtaining m total optical data of the liquid crystal display panel when each sub-pixel is controlled by a gamma voltage and a common voltage when displaying the preset gray scale according to the n first optical data and the n second optical data includes:
obtaining a first data set according to the n first optical data, and obtaining a second data set according to the n second optical data;
and traversing and combining the ith first optical data in the first data set and the jth second optical data in the second data set to obtain m total optical data when each sub-pixel in the liquid crystal display panel is controlled by the ith gamma voltage and the jth shared voltage when displaying the preset gray scale, wherein i and j are integers, i is more than or equal to 1 and less than or equal to n, and j is more than or equal to 1 and less than or equal to n.
In one embodiment, the step of obtaining m total optical data when each sub-pixel in the lcd panel is controlled by the ith gamma voltage and the jth sharing voltage when displaying the preset gray scale by traversing and combining the ith first optical data in the first data set and the jth second optical data in the second data set includes:
and superposing the tristimulus values of the ith first optical data and the tristimulus values of the jth second optical data respectively to obtain the corresponding tristimulus values of the total optical data.
In one embodiment, the viewing angle data includes seixi viewing angle data and/or VAI viewing angle data, and the step of obtaining m sets of test performance data of the liquid crystal display panel according to the m total optical data includes:
converting the tristimulus values at the first visual angle into first color coordinates in a preset chromaticity space and converting the tristimulus values at the second visual angle into second color coordinates in the preset chromaticity space in the total optical data of each preset picture;
and obtaining the visual angle data according to the first color coordinate and the second color coordinate.
In an embodiment, the transmittance data includes white frame transmittance data, the preset frame is a white frame, and the step of obtaining m sets of test performance data of the lcd panel through simulation according to the m total optical data includes:
obtaining the actual brightness of the white picture according to the total optical data of the white picture;
and obtaining the white picture penetration rate data according to the actual brightness and the ideal brightness of the white picture.
In one embodiment, the step of determining the desired target test performance data from the m sets of test performance data comprises:
acquiring expected performance data;
and comparing the m groups of test performance data with the expected performance data, and determining target test performance data from the m groups of test performance data according to a comparison result.
The present application further provides a voltage determination device applied to a liquid crystal display panel, the liquid crystal display panel includes a plurality of sub-pixels, the sub-pixels include a main pixel area and an auxiliary pixel area, and the voltage determination device includes:
the first acquisition module is used for acquiring n first optical data of the main pixel region under the control of n gamma voltages respectively when each sub-pixel in the liquid crystal display panel displays a preset gray scale, wherein n is an integer greater than 1;
a second obtaining module, configured to obtain an area ratio between the main pixel area and the auxiliary pixel area, use the n gamma voltages as n shared voltages, and obtain n second optical data of the auxiliary pixel area when the auxiliary pixel area is controlled by the n shared voltages when each sub-pixel in the liquid crystal display panel displays the preset gray scale according to the n first optical data and the area ratio;
an obtaining module, configured to obtain m total optical data when each sub-pixel in the liquid crystal display panel displays the preset gray scale and is controlled by a gamma voltage and a shared voltage at the same time according to the n first optical data and the n second optical data, where m is an integer greater than 1;
the simulation module is used for simulating and obtaining m groups of test performance data of the liquid crystal display panel according to the m total optical data, wherein the test performance data comprises visual angle data and penetration rate data;
a determining module, configured to determine required target test performance data from the m sets of test performance data, determine a target gamma voltage from the n gamma voltages according to the target test performance data, and determine a target shared voltage from the n shared voltages.
Has the advantages that: the application provides a voltage determination method and a voltage determination device, which are applied to a liquid crystal display panel, wherein the liquid crystal display panel comprises a plurality of sub-pixels, each sub-pixel comprises a main pixel area positioned in a main pixel area and an auxiliary pixel area positioned in an auxiliary pixel area, the method comprises the steps of firstly, when each sub-pixel in the liquid crystal display panel displays a preset gray scale, acquiring n first optical data when the main pixel area is respectively controlled by n gamma voltages, wherein n is an integer larger than 1, then acquiring the area ratio of the main pixel area and the auxiliary pixel area, respectively using the n gamma voltages as n shared voltages, acquiring n second optical data when each sub-pixel in the liquid crystal display panel displays the preset gray scale according to the n first optical data and the area ratio, respectively controlling the auxiliary pixel area by the n shared voltages, and then according to the n first optical data and the n second optical data, obtaining m total optical data when each sub-pixel in the liquid crystal display panel displays a preset gray scale and is simultaneously controlled by a gamma voltage and a sharing voltage, wherein m is an integer larger than 1, simulating and obtaining m groups of test performance data of the liquid crystal display panel according to the m total optical data, wherein the test performance data comprises visual angle data and penetration rate data, finally determining required target test performance data from the m groups of test performance data, determining a target gamma voltage from the n gamma voltages according to the target test performance data, and determining a target sharing voltage from the n sharing voltages. According to the method, only n first optical data of the main pixel area need to be obtained through experiments, subsequently, n second optical data of the auxiliary pixel area can be obtained through calculation directly according to the area ratio of the main pixel area to the auxiliary pixel area, m total optical data of the sub-pixels can be obtained through calculation, after the total optical data are obtained, m groups of test performance data can be obtained through direct simulation according to the total optical data, finally, required target test performance data are selected from the test performance data, and required target gamma voltage and target shared voltage can be finally determined.
Drawings
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 schematic plan view of a voltage determination method in the prior art.
Fig. 2 is a flowchart of a voltage determining method in an embodiment of the present application.
Fig. 3 is a schematic plan view of a sub-pixel in the embodiment of the present application.
Fig. 4 is a schematic diagram of a process of acquiring total optical data in an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a voltage determination device in 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, electrically 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 statement that a first feature is "on" or "under" a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but are in contact with each other through additional features between them. 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. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements 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 provides a voltage determining method and a voltage determining device, which are used for relieving the technical problem of low efficiency in determining the voltage meeting the visual angle condition in the existing liquid crystal display panel.
As shown in fig. 1, the voltage determining method of the present application is applied to a liquid crystal display panel including a plurality of sub-pixels including a main pixel region and an auxiliary pixel region, the method including the steps of:
s1: when each sub-pixel in the liquid crystal display panel displays a preset gray scale, n first optical data of a main pixel area under the control of n gamma voltages are obtained, wherein n is an integer larger than 1.
As shown in fig. 2, the liquid crystal display panel in the embodiment of the present application is a VA-mode liquid crystal display panel, and the liquid crystal display panel includes a plurality of sub-pixels, specifically, a red sub-pixel R, a green sub-pixel G, and a blue sub-pixel B.
The liquid crystal display panel generally includes a substrate, a buffer layer, an active layer, a first gate insulating layer, a first metal layer, a second gate insulating layer, a second metal layer, an interlayer dielectric layer, a source/drain layer, a planarization layer, a pixel electrode layer, and the like, which are stacked from bottom to top. As shown in fig. 3, for each sub-pixel, the first metal layer is patterned to form the gate electrode of each thin film transistor in the pixel driving circuit for driving the sub-pixel, the first plate of the storage capacitor, the scan line 201 and the shielding electrode 202, and the gate electrodes of the sub-pixels in the same row of pixels can be connected to the same scan line 201. The second metal layer is patterned to form a second plate of the storage capacitor. The source and drain electrode layers are patterned to form a source electrode and a drain electrode of each thin film transistor, a data line 301 and a shared electrode line 302, and the drain electrode of each thin film transistor in the same column of sub-pixels can be connected with the data lines 301 of two left and right columns of the sub-pixels. The pixel electrode layer 103 is patterned to form a pixel electrode 401 and a common electrode line 402. The liquid crystal display panel comprises a plurality of data lines 301, a plurality of data lines 301 and a plurality of scanning lines 201, wherein the data lines 301 are distributed at intervals along the vertical direction, the scanning lines 201 are distributed at intervals along the horizontal direction, the data lines 301 and the scanning lines 201 are arranged in a crossed and vertical mode, and the shared electrode lines 302 are parallel to the data lines 301 and are located between the adjacent data lines 301.
The sub-pixel includes a main pixel area 100 and an auxiliary pixel area 200, the main pixel area 100 is an area above the scan line 201, and the auxiliary pixel area 200 is an area below the scan line 201. The pixel electrode 401 includes two portions located in the main pixel region 100 and the auxiliary pixel region 200, each portion includes a main portion in a cross shape and a branch portion connected to the main portion, the main portion divides each portion of the pixel electrode 401 into four display domains, and the two portions of the main pixel region 100 and the auxiliary pixel region 200 include eight display domains in total.
The scanning line 201 and the data line 301 control the display of the main pixel area 100 and the auxiliary pixel area 200 through the first transistor 10, and the shared electrode line 302 controls the auxiliary pixel area in the auxiliary pixel area 200 through the second transistor 20, so that the potential of the auxiliary pixel area is reduced, and the differential display of the main pixel area and the auxiliary pixel area is realized, thereby improving the viewing angle. When a signal is input to the data line 301, a gamma reference voltage is generated in a gamma circuit on the Tcon board, and then the gamma reference voltage is input to the source driver ic, and a gray scale voltage corresponding to the gamma voltage and the display data is generated in the source driver ic and provided to the data line 301, so that each sub-pixel displays a different gray scale. The shared electrode line 302 is also called sharebar, and provides a shared voltage, i.e. SHB voltage.
In S1, the same gamma voltage is input to all main pixel regions, and a predetermined gray scale voltage is input to each sub-pixel, so that the liquid crystal display panel displays a predetermined image, and then the data collection device collects first optical data of all main pixel regions in the predetermined image under the control of the gamma voltage. When another gamma voltage is changed, another first optical data can be obtained, the above process is repeated n times, and each time the value of the gamma voltage is different, n first optical data can be obtained in total.
In one embodiment, the first optical data specifically includes tristimulus values of the main pixel area. A red sub-pixel R, a green sub-pixel G and a blue sub-pixel B in a liquid crystal display panel respectively display red light, green light and blue light, the three colors are three primary colors, and tristimulus values refer to the amount of three primary color stimuli required by color matching with light to be detected in a CIE 1931XYZ chromaticity system and specifically comprise a red primary color stimulus value X, a green primary color stimulus value Y and a blue primary color stimulus value Z. As shown in fig. 4, when red light, green light and blue light emitted from each of the red, green and blue sub-pixels R, G and B are mixed under the driving of the gamma voltage 1, a 1 st group of tristimulus values may be sensed as (X) 11 ，Y 11 ，Z 11 ) To express that under the driving of gamma voltage 2, the 2 nd group of the third stimulus values can be sensed, which is expressed by (X) 12 ，Y 12 ，Z 12 ) To express, and by analogy, under the driving of gamma voltage n, the nth group of tristimulus values can be sensed, and is used as (X) 1n ，Y 1n ，Z 1n ) To indicate.
In an embodiment, S1 specifically includes: inputting a preset gray scale voltage, a gamma voltage and an initial sharing voltage to the liquid crystal display panel so that each main pixel area displays the preset gray scale and each auxiliary pixel area has the brightness of 0 to obtain k preset pictures, wherein k is a positive integer; when each gamma voltage is input, acquiring the tristimulus values of the target area of the liquid crystal display panel under a first visual angle and the tristimulus values under a second visual angle when each preset picture is displayed respectively to obtain first optical data. For a complete sub-pixel, when a gamma voltage and a preset gray scale voltage are input, the main pixel area and the auxiliary pixel area emit light, in order to acquire first optical data of the independent main pixel area and avoid interference caused by light emission of the auxiliary pixel area, an initial shared voltage can be input through the shared electrode line 302, so that the main pixel area displays the preset gray scale, and the brightness of the auxiliary pixel area is always 0. According to the requirement of subsequent tests, when only one preset picture is needed, only the first optical data of the preset picture is needed to be acquired for the same gamma voltage, when a plurality of preset pictures are needed, a plurality of first optical data are needed to be acquired for the same gamma voltage, and the first optical data jointly form the first optical data corresponding to the gamma voltage. When the first optical data corresponding to another gamma voltage needs to be acquired, the same one or more groups of preset gray scale voltages are input again to acquire one or more preset pictures, and then the first optical data corresponding to the replaced gamma voltage is acquired. Repeating the above process n times to obtain n first optical data, wherein each first optical data comprises the first optical data under k preset pictures.
The first optical data for each preset frame includes tristimulus values at a first viewing angle and tristimulus values at a second viewing angle, wherein the first viewing angle can be a front view and the second application can be a side view. In order to enable the test result to be accurate, the central area of the liquid crystal display panel is taken as a target area, and the tristimulus values of the central area are measured by a tristimulus value colorimeter or a spectroradiometer according to a first visual angle and a second visual angle respectively to obtain first optical data under the preset picture.
S2: the area ratio of the main pixel area to the auxiliary pixel area is obtained, the n gamma voltages are respectively used as n shared voltages, and according to the n first optical data and the area ratio, n second optical data of the auxiliary pixel area when the auxiliary pixel area is respectively controlled by the n shared voltages when each sub-pixel in the liquid crystal display panel displays the preset gray scale are obtained.
Generally, the larger the area to be displayed under the same voltage, the smaller the corresponding optical data value, and vice versa, i.e. the value of the optical data is inversely related to the area of the display surface. On this premise, if an equal voltage is input to the main pixel region and the sub pixel region, respectively, the optical data of the main pixel region and the optical data of the sub pixel region can be converted by the area ratio therebetween.
Specifically, after first optical data of the main pixel region under control of n different gamma voltages is acquired in S1, the n gamma voltages are respectively regarded as n shared voltages, as shown in fig. 4, the gamma voltages 1 to n respectively correspond to the shared voltages 1 to n, first optical data acquired when the gamma voltage 1 is independently input to the main pixel region may be converted to obtain second optical data acquired when the shared voltage 1 is independently input to the auxiliary pixel region, first optical data acquired when the gamma voltage 2 is independently input to the main pixel region may be converted to obtain second optical data acquired when the shared voltage 2 is independently input to the auxiliary pixel region, and so on.
For each sub-pixel, the initial shared voltage can be adjusted to make the light emission of the auxiliary pixel area be 0, so that the first optical data of the main pixel area can be acquired independently, while for the auxiliary pixel area, the light emission of the main pixel area is 0, and the light emission of the auxiliary pixel area is not 0, so that the second optical data can be acquired independently. In the embodiment of the application, the second optical data when the auxiliary pixel area independently inputs the shared voltage can be directly obtained by converting the area ratio of the main pixel area to the auxiliary pixel area, so that the defect that direct measurement is difficult is overcome, the labor cost and the time cost are reduced by a direct calculation mode, and the data processing efficiency is improved.
In one embodiment, the second optical data specifically includes tristimulus values for the secondary pixel regions, and then the 1 st set of tristimulus values (X) for the primary pixel region 11 ，Y 11 ，Z 11 ) The 1 st set of tristimulus values (X) of the auxiliary pixel region can be obtained by calculation 21 ，Y 21 ，Z 21 ) For the 2 nd set of tristimulus values (X) of the main pixel region 12 ，Y 12 ，Z 12 ) The 2 nd set of tristimulus values (X) of the auxiliary pixel region can be obtained by calculation 22 ，Y 22 ，Z 22 ) By analogy, for the nth set of tristimulus values (X) of the main pixel region 1n ，Y 1n ，Z 1n ) The nth set of tristimulus values (X) of the auxiliary pixel region can be obtained by calculation 2n ，Y 2n ，Z 2n )。
In an embodiment, S2 specifically includes: acquiring the area ratio of the main pixel area to the auxiliary pixel area; and dividing the tristimulus value of each first optical data by the area ratio to obtain the corresponding tristimulus value of the second optical data. Since the numerical value of the optical data is inversely related to the area ratio, the tristimulus value in each first optical data can be directly divided by the area ratio, and the tristimulus value of each second optical data can be obtained.
S3: and obtaining m total optical data when each sub-pixel in the liquid crystal display panel displays a preset gray scale and is simultaneously controlled by a gamma voltage and a sharing voltage according to the n first optical data and the n second optical data, wherein m is an integer greater than 1.
Since the first optical data corresponds to the main pixel region and the second optical data corresponds to the auxiliary pixel region, the combination of the two can obtain total optical data, and the total optical data can reflect the optical characteristics of all the sub-pixels in the liquid crystal display panel when controlled by the gamma voltage and the shared voltage.
In an embodiment, S3 specifically includes: obtaining a first data set according to the n first optical data, and obtaining a second data set according to the n second optical data; and traversing and combining the ith first optical data in the first data set and the jth second optical data in the second data set to obtain m total optical data of all sub-pixels in the liquid crystal display panel when the sub-pixels are simultaneously controlled by the ith gamma voltage and the jth shared voltage, wherein i and j are integers, i is more than or equal to 1 and less than or equal to n, and j is more than or equal to 1 and less than or equal to n. The method comprises the steps of putting n first optical data into the same set to obtain a first data set, putting n second optical data into the same set to obtain a second data set, after two sets are obtained, selecting one first optical data from the first data set, selecting one second optical data from the second data set, combining the first optical data and the second optical data to obtain total optical data, traversing and combining elements in each data set in the process to enable all the elements to be obtained, and finally obtaining m total optical data, wherein m is equal to n 2 The traversing combination operation enables the data volume of the total optical data to be larger, and the space available for reference to be larger.
In one embodiment, the total optical data includes tristimulus values when the sub-pixels are controlled by both the gamma voltage and the shared voltage, and the traversing combination yields m total optical numbersThe method specifically comprises the following steps: and superposing the tristimulus values of the ith first optical data and the jth second optical data respectively to obtain the corresponding tristimulus values of the total optical data. As shown in FIG. 4, with (X) 1i ，Y 1i ，Z 1i ) A tristimulus value representing the ith first optical data, represented by (X) 2j ，Y 2j ，Z 2j ) A tristimulus value representing the jth second optical data, represented by (X) t ，Y t ，Z t ) A tristimulus value (t is an integer and 1. ltoreq. t.ltoreq.m) representing the t-th total optical data after superposition satisfies (X) t ，Y t ，Z t )＝(X 1i +X 2j ，Y 1i +Y 2j ，Z 1i +Z 2j )。
S4: and according to the m total optical data, simulating to obtain m groups of test performance data of the liquid crystal display panel, wherein the test performance data comprises visual angle data and penetration rate data.
After obtaining the total optical data, calculation and simulation can be performed according to a formula related to the optical data to obtain test performance data of the liquid crystal display panel, wherein the viewing angle data comprises Sessie viewing angle data and/or VAI viewing angle data, and the penetration rate data comprises white picture penetration rate data. The seich viewing angle data specifically includes an average color difference in a preset chromaticity space when the liquid crystal display panel displays 9 preset seich images in each combination of the gamma voltage and the shared voltage. The SONY VAI viewing angle data specifically includes saturation difference and hue difference in a preset chromaticity space when the liquid crystal display panel displays 4 preset images in each combination of the gamma voltage and the shared voltage. The white frame transmittance data specifically includes a ratio of an actual luminance value to an ideal luminance value of the liquid crystal display panel when displaying a white frame, at each combination of the gamma voltage and the shared voltage. One skilled in the art can choose to simulate and calculate any one or more of the indices according to the testing requirements.
In an embodiment, when the perspective data needs to be acquired, S4 specifically includes: converting tristimulus values at a first view angle into first color coordinates in a preset chromaticity space and converting tristimulus values at a second view angle into second color coordinates in the preset chromaticity space in the total optical data of each preset picture; and obtaining the visual angle data according to the first color coordinate and the second color coordinate.
The saixi viewing angle data specifically includes an average color difference when the liquid crystal display panel displays 9 preset images when the preset chromaticity space is CIE 1931L u v chromaticity space under each combination of the gamma voltage and the shared voltage. In the CIE 1931XYZ chromaticity diagram, each color has a specific color coordinate, but human eyes have recognition sensitivity, that is, when the color coordinate changes very little, human eyes cannot distinguish the difference of the color change, the change range of the color difference which is not sensed by human eyes in colorimetry is called the latitude of the color, and in order to overcome the shortcoming of the latitude, the CIE 1931XYZ chromaticity system is improved to obtain the CIE 1976L u v chromaticity space. CIE 1976L u v color space the relationship of color coordinates (u, v) to tristimulus values XYZ is:
when Sessie visual angle data are obtained, each combination of gamma voltage and shared voltage corresponds to 9 preset pictures, all red sub-pixels in each preset picture display red light with a specific gray scale, all green sub-pixels display green light with a specific gray scale, all blue sub-pixels also display blue light with a specific gray scale, and the three colors are mixed to enable the whole Sessie picture to display a specific color, such as light skin color, dark skin color, red color, gray color and the like, wherein the preset gray scales corresponding to the preset pictures are different.
Specifically, the gray scale values of the 9 preset pictures may have different value manners, and the preset pictures 1 to 9 respectively display a black skin color (dark skin), a light skin color (light skin), a blue color (blue), a green color (green), a red color (red), a yellow color (yellow), a magenta color (magenta), a cyan color (blue), and a gray color (gray) according to the different gray scale values. When the preset gray scale is input through the analog interface, the gray scale value of each sub-pixel ranges from 0 to 255 gray scale, for example, the preset gray scales of the sub-pixels of the colors in the preset frame 1 are 115, 82 and 68, the preset gray scales of the sub-pixels of the colors in the preset frame 2 are 194, 150 and 130, the preset gray scales of the sub-pixels of the colors in the preset frame 3 are 56, 61 and 150, the preset gray scales of the sub-pixels of the colors in the preset frame 4 are 70, 148 and 73, the preset gray scales of the sub-pixels of the colors in the preset frame 5 are 175, 54 and 60, the preset gray scales of the sub-pixels of the colors in the preset frame 6 are 231, 199 and 31, the preset gray scales of the sub-pixels of the colors in the preset frame 7 are 187, 86 and 149, the preset gray scales of the sub-pixels of the colors in the preset frame 8 are 8, 133 and 161, and the preset gray scales of the sub-pixels of the colors in the preset frame 9 are 122, respectively, 122, and 121. When the preset gray scale is input through the digital interface, the gray scale value of each sub-pixel is in the range of 16 to 235 gray scales, the gray scales of the sub-pixels of various colors in the preset pictures 1 to 9 are slightly different, but the mixed preset picture still displays the 9 colors.
The tristimulus values of the total optical data corresponding to each preset picture can be obtained through S1 to S3, 9 tristimulus values can be obtained by 9 preset pictures, and the tristimulus values corresponding to each preset picture are different due to different gray scales displayed by each preset western picture. After obtaining tristimulus values of the total optical data of each preset frame, the color coordinates (u, v) in CIE 1976L u v chromaticity space thereof can be obtained through the above formula 1 and formula 2, wherein the color coordinates include a first color coordinate (u, v) at a first viewing angle 0 ，v 0 ) And a second color coordinate (u) at a second viewing angle 1 ，v 1 ) Then, the color difference Δ E in CIE 1976L u v chromaticity space of each preset picture satisfies:
averaging 9 delta E values obtained from 9 preset pictures under the same combination of gamma voltage and shared voltage to obtain average chromatic aberration, so that Sessie view angle data corresponding to one total optical data can be obtained, and m average chromatic aberrations are obtained from m total optical data.
The SONY VAI viewing angle data specifically includes data such as saturation difference dc and hue difference dh of each preset image when the preset chromaticity space is CIE 1931L C h chromaticity space under each combination of the gamma voltage and the shared voltage. The color includes chroma and lightness, and chroma includes hue and saturation, and the color difference reflects the chroma difference of the color without considering the lightness difference of the color, so that the CIE 1976L A B chroma space is further obtained on the basis of the CIE 1976L U V chroma space, L is lightness, and (a B) is chroma. The method comprises the steps of providing 4 preset pictures under an SONY VAI viewing angle, wherein gray scales of sub-pixels in each preset picture are preset values, the gray scales of the 4 preset pictures are unequal, and the 4 preset pictures respectively display different skin colors through different preset gray scales. Specifically, the gray scales of the red, green and blue sub-pixels of the preset screen 1 are 133, 101 and 75, respectively, the gray scales of the red, green and blue sub-pixels of the preset screen 2 are 192, 156 and 129, respectively, the gray scales of the red, green and blue sub-pixels of the preset screen 3 are 186, 161 and 143, respectively, and the gray scales of the red, green and blue sub-pixels of the preset screen 4 are 211, 153 and 126, respectively. Similarly, the tristimulus values of the total optical data corresponding to each preset frame can be obtained through S1 to S3, 4 tristimulus values can be obtained for 4 preset frames, and the tristimulus values corresponding to each preset frame are different because the gray scale displayed by each preset frame is different.
Let the tristimulus value of the standard light source be (X) n ，Y n ，Z n ) Then, for each preset frame, the tristimulus values (X, Y, Z) of the total optical data, which satisfy L, a, b in CIE 1976L a b chromaticity space:
L*＝116f(Y/Y n ) -16 (equation 4);
a*＝500[f(X/X n )-f(Y/Y n )](equation 5);
b*＝200[f(Y/Y n )-f(Z/Z n )](equation 6).
In the above formulas, when X/X n When > 0.008856, f (X/X) n )＝(X/X n ) 1/3 When X/X n When the ratio is less than or equal to 0.008856, f (X/X) n )＝7.787(X/X n ) + 16/116; when Y/Y n When > 0.008856, f (Y/Y) n )＝(Y/Y n ) 1/3 When Y/Y is n When f is less than or equal to 0.008856, (Y/Y) n ) 7.787(Y/Yn) + 16/116; when Z/Z is n When > 0.008856, f (Z/Z) n )＝(Z/Z n ) 1/3 When Z/Z is n When f is less than or equal to 0.008856, f (Z/Z) n )＝7.787(Z/Z n )+16/116。
After obtaining the tristimulus values of the total optical data of each preset frame, the color coordinates (L, a, b) in CIE 1976L a b chromaticity space can be obtained through the above formulas 4 to 6, wherein the color coordinates include a first color coordinate (L, a, b) at a first viewing angle 0 ，a 0 ，b 0 ) And a second color coordinate (L) at a second viewing angle 1 ，a 1 ，b 1 ) And the chromaticity difference delta a, delta b and the lightness difference delta L of each preset picture satisfy:
ΔL＝L 1 -L 0 (equation 7);
Δa＝a 1 -a 0 (equation 8);
Δb＝b 1 -b 0 (equation 9).
On the basis of the above, the color difference Δ E of each preset picture in CIE 1976L α b chromaticity space can be obtained, where Δ E satisfies:
after Δ L, Δ a, Δ b, and Δ E are obtained by the above calculation, data such as a saturation difference dc and a hue difference dh in the L × C × h chromaticity space can be obtained from a conversion relationship between the L × a × b chromaticity space and the L × C × h chromaticity space according to CIE 1976.
In one embodiment, when the white picture transmittance data needs to be acquired, S4 specifically includes: obtaining the actual brightness of the white picture according to the total optical data of the white picture; and obtaining the white picture penetration rate data according to the actual brightness and the ideal brightness of the white picture. For the white picture transmittance data, for the same combination of the gamma voltage and the shared voltage, the liquid crystal display panel displays the white picture by controlling the gray-scale values of the red sub-pixel, the green sub-pixel and the blue sub-pixel in the liquid crystal display panel. The tristimulus values of the total optical data corresponding to the white picture can be obtained through steps S1 to S3, and then converted to obtain the actual luminance Lv of the white picture. For different combinations of gamma voltages and shared voltages, the corresponding tristimulus values are different, and the actual brightness value Lv of the white picture is also different. And converting the tristimulus value of each total optical data into an actual brightness value Lv of the white picture, acquiring an ideal brightness value of the liquid crystal display panel when the white picture is displayed, and dividing the ideal brightness value by the actual brightness value to obtain corresponding white picture transmittance data, so that m total optical data can obtain m white picture transmittance data.
S5: determining required target test performance data from the m sets of test performance data, determining a target gamma voltage from the n gamma voltages according to the target test performance data, and determining a target shared voltage from the n shared voltages.
And comprehensively comparing and considering the m groups of test performance data, and selecting a group of test performance data which best meets the expectation as target test performance data, wherein the gamma voltage required by the target test performance data is obtained in the process and is used as a target gamma voltage, the required shared voltage is a target shared voltage, and the combination of the target gamma voltage and the target shared voltage can ensure that the liquid crystal display panel has better visual angle and penetration rate.
In an embodiment, S5 specifically includes: acquiring expected performance data; and comparing the m groups of test performance data with the expected performance data, and determining target test performance data from the m groups of test performance data according to the comparison result. When determining the target test performance data, expected performance data may be obtained first, where the expected performance data refers to a viewing angle and a transmittance that a developer expects a liquid crystal display panel of the current specification to have, the m sets of test performance data and the expected performance data are respectively compared, and according to a comparison result, a set of test performance data having a composite index closest to the expected performance data may be used as the target test performance data.
After the target gamma voltage and the target shared voltage are finally obtained through the processes, in the subsequent use process of the liquid crystal display panel with the same specification, the target gamma voltage can be input to all the sub-pixels of the liquid crystal display panel, and the target shared voltage is input to all the auxiliary pixel areas, so that the liquid crystal display panel has the same display effect as that in the target test performance data, and the liquid crystal display panel with better image quality is obtained.
When the related test performance data of the visual angle and the penetration rate are obtained currently, different sharing voltages are mainly adjusted through experiments, the visual angle and the penetration rate data of the liquid crystal display panel are actually measured, and then the appropriate sharing voltage is determined, so that the efficiency is low. In the voltage determination method, only n first optical data of the main pixel area need to be obtained through experiments, then n second optical data of the auxiliary pixel area can be obtained through calculation according to the area ratio of the main pixel area to the auxiliary pixel area, then m total optical data of the sub-pixels can be obtained through calculation, after the total optical data are obtained, m groups of test performance data can be obtained through direct simulation according to the total optical data, finally, required target test performance data are selected from the test performance data, and finally, required target gamma voltage and target shared voltage can be determined.
As shown in fig. 5, an embodiment of the present application further provides a voltage determining apparatus, where the apparatus is applied to a liquid crystal display panel, the liquid crystal display panel includes a plurality of sub-pixels, and each sub-pixel includes a main pixel area and an auxiliary pixel area, and the apparatus specifically includes:
a first obtaining module 110, configured to obtain n first optical data of the main pixel region when each sub-pixel in the liquid crystal display panel displays a preset gray scale, where n is an integer greater than 1, and the n is controlled by n gamma voltages respectively;
a second obtaining module 120, configured to obtain an area ratio between the main pixel area and the auxiliary pixel area, use the n gamma voltages as n shared voltages, and obtain n second optical data of the auxiliary pixel area when the auxiliary pixel area is controlled by the n shared voltages when each sub-pixel in the liquid crystal display panel displays the preset gray scale according to the n first optical data and the area ratio;
an obtaining module 130, configured to obtain m total optical data when each sub-pixel in the liquid crystal display panel is controlled by a gamma voltage and a sharing voltage when displaying the preset gray scale according to the n first optical data and the n second optical data, where m is an integer greater than 1;
the simulation module 140 is configured to obtain m sets of test performance data of the liquid crystal display panel through simulation according to the m total optical data, where the test performance data includes viewing angle data and transmittance data;
the determining module 150 is configured to determine required target test performance data from the m sets of test performance data, determine a target gamma voltage from the n gamma voltages according to the target test performance data, and determine a target shared voltage from the n shared voltages.
In one embodiment, the first optical data, the second optical data, and the total optical data each include tristimulus values.
In one embodiment, the first obtaining module 110 includes:
the first input submodule is used for inputting preset gray scale voltage, gamma voltage and initial sharing voltage to the liquid crystal display panel so that each main pixel area displays the preset gray scale and each auxiliary pixel area has the brightness of 0 to obtain k preset pictures, wherein k is a positive integer;
the first obtaining submodule is used for respectively obtaining the tristimulus values of the target area of the liquid crystal display panel under a first visual angle and the tristimulus values under a second visual angle when each preset picture is displayed when each gamma voltage is input, so as to obtain first optical data.
In one embodiment, the second obtaining module 120 includes:
the second acquisition submodule is used for acquiring the area ratio of the main pixel area to the auxiliary pixel area;
and the first obtaining submodule is used for dividing the tristimulus value of each first optical data by the area ratio to obtain the corresponding tristimulus value of the second optical data.
In one embodiment, the obtaining module 130 includes:
the second obtaining submodule is used for obtaining a first data set according to the n first optical data and obtaining a second data set according to the n second optical data;
and the third obtaining submodule is used for traversing and combining the ith first optical data in the first data set and the jth second optical data in the second data set to obtain m total optical data when each sub-pixel in the liquid crystal display panel is controlled by the ith gamma voltage and the jth shared voltage when displaying the preset gray scale, wherein i and j are integers, i is more than or equal to 1 and less than or equal to n, and j is more than or equal to 1 and less than or equal to n.
In an embodiment, the third obtaining submodule is configured to superimpose the tristimulus values of the ith first optical data and the tristimulus values of the jth second optical data respectively to obtain corresponding tristimulus values of the total optical data.
In one embodiment, the view data includes seixie view data and/or VAI view data, and the simulation module 140 includes:
the conversion sub-module is used for converting the tristimulus values at the first visual angle into first color coordinates in a preset chromaticity space and converting the tristimulus values at the second visual angle into second color coordinates in the preset chromaticity space in the total optical data of each preset picture;
and the fourth obtaining submodule is used for obtaining the visual angle data according to the first color coordinate and the second color coordinate.
In one embodiment, the transmittance data includes white frame transmittance data, and the simulation module 140 includes:
a fifth obtaining submodule, configured to obtain actual brightness of the white picture according to the total optical data of the white picture;
and the sixth obtaining submodule is used for obtaining the white picture penetration rate data according to the actual brightness and the ideal brightness of the white picture.
In one embodiment, the determination module 150 includes:
a third obtaining submodule, configured to obtain expected performance data;
and the determining submodule is used for comparing the m groups of test performance data with the expected performance data and determining target test performance data from the m groups of test performance data according to the comparison result.
In one embodiment, the voltage determining apparatus further includes an input module for inputting the target gamma voltage to all sub-pixels of the liquid crystal display panel and inputting the target shared voltage to all sub-pixel regions.
The voltage determination device of the application, through setting up above-mentioned each module, only need obtain n first optical data of main pixel district through the experiment, it is follow-up can directly obtain n second optical data of assisting the pixel district according to the area ratio calculation of main pixel district and assistance pixel district, and then calculate m total optical data that obtain the sub-pixel, and after obtaining total optical data, can directly simulate according to each total optical data again and obtain m groups of test performance data, select required target test performance data from it at last, and can confirm required target gamma voltage and target shared voltage finally, only need carry out experimental operation in the in-process that obtains first optical data at this in-process, each subsequent step all can be obtained through calculation and simulation, therefore manpower and time cost all obtain reducing, efficiency obtains showing and promotes.
According to the above embodiment:
the application provides a voltage determination method and a voltage determination device, the method and the device only need to obtain n first optical data of a main pixel area through experiments, subsequently, n second optical data of an auxiliary pixel area can be obtained through calculation directly according to the area ratio of the main pixel area to the auxiliary pixel area, m total optical data of sub-pixels can be obtained through calculation, after the total optical data are obtained, m groups of test performance data can be obtained through direct simulation according to the total optical data, finally, required target test performance data are selected from the test performance data, and finally, required target gamma voltage and target sharing voltage can be determined.
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 voltage determining method and the voltage determining apparatus provided by the embodiments of the present application are described in detail above, and the principles and embodiments of the present application are explained herein by applying specific examples, and the description of the embodiments above is only used to help understand the technical solutions and core ideas 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 (10)
1. A voltage determination method applied to a liquid crystal display panel including a plurality of sub-pixels including a main pixel area and an auxiliary pixel area, the voltage determination method comprising:
when each sub-pixel in the liquid crystal display panel displays a preset gray scale, acquiring n first optical data of the main pixel region under the control of n gamma voltages respectively, wherein n is an integer greater than 1;
acquiring the area ratio of the main pixel area and the auxiliary pixel area, taking the n gamma voltages as n shared voltages respectively, and acquiring n second optical data of the auxiliary pixel area when each sub-pixel in the liquid crystal display panel displays the preset gray scale and is controlled by the n shared voltages respectively according to the n first optical data and the area ratio;
obtaining m total optical data when each sub-pixel in the liquid crystal display panel is controlled by a gamma voltage and a sharing voltage when displaying the preset gray scale according to the n first optical data and the n second optical data, wherein m is an integer greater than 1;
according to the m total optical data, simulating to obtain m groups of test performance data of the liquid crystal display panel, wherein the test performance data comprises visual angle data and penetration rate data;
and determining required target test performance data from the m groups of test performance data, determining target gamma voltages from the n gamma voltages according to the target test performance data, and determining target shared voltages from the n shared voltages.
2. The voltage determination method of claim 1, wherein the first optical data, the second optical data, and the total optical data each comprise a tristimulus value.
3. The voltage determining method of claim 2, wherein the step of acquiring n first optical data of the main pixel region when controlled by n gamma voltages respectively while each sub-pixel in the liquid crystal display panel displays a preset gray scale comprises:
inputting a preset gray scale voltage, a gamma voltage and an initial sharing voltage to the liquid crystal display panel so that each main pixel area displays a preset gray scale and each auxiliary pixel area has the brightness of 0 to obtain k preset pictures, wherein k is a positive integer;
when each gamma voltage is input, acquiring the tristimulus values of the target area of the liquid crystal display panel under a first visual angle and the tristimulus values under a second visual angle when each preset picture is displayed respectively to obtain first optical data.
4. The voltage determining method of claim 3, wherein the step of obtaining the area ratio of the main pixel area and the auxiliary pixel area, and using the n gamma voltages as n sharing voltages respectively, and obtaining n second optical data of the auxiliary pixel area when each sub-pixel in the liquid crystal display panel displays the preset gray scale according to the n first optical data and the area ratio, when the sub-pixel is controlled by the n sharing voltages respectively, comprises:
acquiring the area ratio of the main pixel area to the auxiliary pixel area;
and dividing the tristimulus value of each first optical data by the area ratio to obtain the corresponding tristimulus value of the second optical data.
5. The method of claim 3, wherein the step of obtaining m total optical data of the sub-pixels of the LCD panel controlled by the gamma voltage and the common voltage when displaying the preset gray scale according to the n first optical data and the n second optical data comprises:
obtaining a first data set according to the n first optical data, and obtaining a second data set according to the n second optical data;
and traversing and combining the ith first optical data in the first data set and the jth second optical data in the second data set to obtain m total optical data when each sub-pixel in the liquid crystal display panel is controlled by the ith gamma voltage and the jth shared voltage when displaying the preset gray scale, wherein i and j are integers, i is more than or equal to 1 and less than or equal to n, and j is more than or equal to 1 and less than or equal to n.
6. The voltage determining method as claimed in claim 5, wherein the step of obtaining m total optical data of the sub-pixels in the liquid crystal display panel when the sub-pixels display the preset gray scale and are simultaneously controlled by the ith gamma voltage and the jth sharing voltage by traversing and combining the ith first optical data in the first data set and the jth second optical data in the second data set comprises:
and superposing the tristimulus values of the ith first optical data and the tristimulus values of the jth second optical data respectively to obtain the corresponding tristimulus values of the total optical data.
7. The voltage determination method according to claim 3, wherein the viewing angle data includes Sessie viewing angle data and/or VAI viewing angle data, and the step of obtaining m sets of test performance data of the liquid crystal display panel based on the m total optical data includes:
converting the tristimulus values at the first view angle into first color coordinates in a preset chromaticity space and converting the tristimulus values at the second view angle into second color coordinates in the preset chromaticity space in the total optical data of each preset picture;
and obtaining the visual angle data according to the first color coordinate and the second color coordinate.
8. The voltage determination method according to claim 3, wherein the transmittance data comprises a white frame transmittance data, the preset frame is a white frame, and the step of obtaining m sets of test performance data of the LCD panel according to the m total optical data comprises:
obtaining the actual brightness of the white picture according to the total optical data of the white picture;
and obtaining the white picture penetration rate data according to the actual brightness and the ideal brightness of the white picture.
9. The voltage determination method of claim 1, wherein the step of determining the desired target test performance data from the m sets of test performance data comprises:
acquiring expected performance data;
and comparing the m groups of test performance data with the expected performance data, and determining target test performance data from the m groups of test performance data according to a comparison result.
10. A voltage determination device applied to a liquid crystal display panel including a plurality of sub-pixels including a main pixel region and an auxiliary pixel region, the voltage determination device comprising:
the first acquisition module is used for acquiring n first optical data of the main pixel region under the control of n gamma voltages respectively when each sub-pixel in the liquid crystal display panel displays a preset gray scale, wherein n is an integer greater than 1;
a second obtaining module, configured to obtain an area ratio between the main pixel area and the auxiliary pixel area, use the n gamma voltages as n shared voltages, and obtain, according to the n first optical data and the area ratio, n second optical data when each sub-pixel in the liquid crystal display panel displays the preset gray scale and the auxiliary pixel area is controlled by the n shared voltages;
an obtaining module, configured to obtain m total optical data when each sub-pixel in the liquid crystal display panel is controlled by a gamma voltage and a sharing voltage when displaying the preset gray scale according to the n first optical data and the n second optical data, where m is an integer greater than 1;
the simulation module is used for simulating and obtaining m groups of test performance data of the liquid crystal display panel according to the m total optical data, wherein the test performance data comprises visual angle data and penetration rate data;
a determining module, configured to determine required target test performance data from the m sets of test performance data, determine a target gamma voltage from the n gamma voltages according to the target test performance data, and determine a target shared voltage from the n shared voltages.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115019744A (en) * | 2022-07-07 | 2022-09-06 | Tcl华星光电技术有限公司 | Voltage determination method and voltage determination device |
| CN115019744B (en) * | 2022-07-07 | 2023-11-28 | Tcl华星光电技术有限公司 | Voltage determination method and voltage determination device |
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