Methods, devices, storage media, and servers for adjusting the output voltage of display panels.

Abstract

This application provides a method, apparatus, server, and storage medium for adjusting the output voltage of a display panel. The adjustment method includes: acquiring the measured brightness of the display panel; obtaining an adjustment coefficient based on the measured brightness; acquiring a lookup table, wherein the lookup table has a preset mapping relationship between the adjustment coefficient and a reference voltage; and adjusting the output voltage of the display panel to the reference voltage corresponding to the adjustment coefficient based on the adjustment coefficient and the lookup table. This application aims to solve the technical problem of slow output voltage adjustment speed of display panels in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of LCD, in particular to a display panel output voltage adjustment method and device and storage medium. BACKGROUND

[0002] An important link in the production process of LCD liquid crystal display is output voltage automatic adjustment. The brightness of the LCD is detected and compensated by an external sensor to improve the output voltage. The detection and compensation time in the production process will affect the manufacturing cost of the product. For example, the Auto gamma adjustment time of the current conventional non-bypass LCD is about 28s, of which the gamma adjustment time is 21s. Therefore, the LCD liquid crystal display in the prior art has the problem of slow output voltage adjustment speed. SUMMARY

[0003] The present application provides a display panel output voltage adjustment method, device, storage medium and server, aiming to solve the technical problem of slow display panel output voltage adjustment speed in the prior art.

[0004] To this end, the present application provides a display panel output voltage adjustment method, characterized in that it comprises:

[0005] Obtaining the measured brightness of the display panel;

[0006] Based on the measured brightness, obtaining a target adjustment coefficient corresponding to the measured brightness;

[0007] Obtaining a call-up table, wherein the call-up table has a preset mapping relationship between different adjustment coefficients and reference voltages;

[0008] Based on the target adjustment coefficient and the call-up table, adjusting the output voltage of the display panel to the reference voltage corresponding to the target adjustment coefficient.

[0009] Optionally,

[0010] The obtaining of the measured brightness of the display panel comprises:

[0011] Obtaining the measured brightness corresponding to different gray scales of the display panel respectively;

[0012] Based on the measured brightness, obtaining a target adjustment coefficient comprises:

[0013] Based on the measured brightness corresponding to different gray scales, obtaining a plurality of target adjustment coefficients corresponding to the plurality of measured brightnesses;

[0014] The adjustment of the reference voltage of the display panel to the reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the call-up table comprises:

[0015] adjust the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient when displaying different gray scales based on the target adjustment coefficient and a calling reference table.

[0016] Optionally, the measured luminance, the gray scale and the target adjustment coefficient satisfy the following relationship:

[0017]

[0018] wherein γ is the target adjustment coefficient; x is the gray scale; L x is the measured luminance; L0 is the standard luminance of 0 gray scale; L 255 is the standard luminance of 255 gray scale.

[0019] Optionally, the calling reference table comprises a plurality of standard coefficient ranges and a plurality of reference voltages; wherein each of the standard coefficient ranges corresponds to one of the reference voltages.

[0020] adjusting the output voltage of the display panel to an output voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and a calling reference table comprises:

[0021] adjusting the output voltage of the display panel to a reference voltage of a standard coefficient range corresponding to the target adjustment coefficient based on the standard coefficient range and the target adjustment coefficient.

[0022] Optionally, the step of adjusting the output voltage of the display panel to a reference voltage of a standard coefficient range corresponding to the target adjustment coefficient based on the standard coefficient range and the target adjustment coefficient comprises:

[0023] if the target adjustment coefficient is not within any of the standard coefficient ranges, determining that the display panel is a defective product;

[0024] if the target adjustment coefficient is within any of the standard coefficient ranges, adjusting the output voltage of the display panel to a reference voltage of a standard coefficient range corresponding to the target adjustment coefficient.

[0025] Optionally, the calling reference table comprises a plurality of progression values and a plurality of groups of calling sub-tables; each of the progression values corresponds to one of the groups of calling sub-tables.

[0026] the obtaining of the calling reference table, wherein the calling reference table has a preset mapping relationship between different adjustment coefficients and reference voltages comprises:

[0027] obtain a first calling sub-table corresponding to the first advanced value, wherein the first calling sub-table is pre-stored with a first mapping relationship between different adjustment coefficients corresponding to the first advanced value and reference voltages;

[0028] adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the calling reference table comprises:

[0029] adjusting the output voltage of the display panel to a first reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the first calling sub-table;

[0030] driving the display panel with the first reference voltage corresponding to the target adjustment coefficient to determine whether the display effect of the display panel meets the standard;

[0031] if not, the obtaining of the calling reference table, wherein the calling reference table is pre-stored with a mapping relationship between different adjustment coefficients and reference voltages further comprises:

[0032] obtaining a second calling sub-table corresponding to a second advanced value, wherein the second calling sub-table is pre-stored with a second mapping relationship between different adjustment coefficients corresponding to the second advanced value and reference voltages; and the second advanced value is less than the first advanced value;

[0033] adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the calling reference table comprises:

[0034] adjusting the output voltage of the display panel to a second reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the second calling sub-table;

[0035] driving the display panel with the second reference voltage corresponding to the target adjustment coefficient to determine whether the display effect of the display panel meets the standard; and if so, using the second reference voltage as the output voltage of the display panel.

[0036] Optionally, after the step of adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the calling reference table, the adjusting method further comprises:

[0037] writing the reference voltage corresponding to the target adjustment coefficient into the memory of the display panel for driving the display panel with the reference voltage when the display panel is started.

[0038] The application also provides an adjusting device for the output voltage of a display panel, comprising:

[0039] an obtaining module adapted to obtain the measured brightness of the display panel and a calling reference table;

[0040] a calculation module, adapted to obtain a target adjustment coefficient based on the measured brightness;

[0041] an adjustment module, adapted to adjust the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the calling lookup table.

[0042] The application also provides a server, comprising:

[0043] one or more processors;

[0044] a memory; and

[0045] one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the adjustment method of the output voltage of the display panel.

[0046] The application also provides a computer readable storage medium, which stores a computer program, wherein the computer program is loaded by a processor to execute the steps in the adjustment method of the output voltage of the display panel.

[0047] In the technical scheme of the application, the measured brightness of the display panel is obtained to obtain an adjustment coefficient, and the reference voltage corresponding to the adjustment coefficient is obtained according to the mapping relationship between the adjustment coefficient and the reference voltage, and the reference voltage is used as the adjusted output voltage of the display panel to achieve the compensation purpose. Compared with the prior art, the technical scheme of the application can shorten the automatic adjustment time by brightness detection and calling the corresponding lookup table, so as to expand the production capacity. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical scheme in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative effort.

[0049] Figure 1 is one of the logic diagrams of the adjustment method of the output voltage of the display panel provided by the embodiments of the application;

[0050] Figure 2 is another of the logic diagrams of the adjustment method of the output voltage of the display panel provided by the embodiments of the application;

[0051] Figure 3 is a third of the logic diagrams of the adjustment method of the output voltage of the display panel provided by the embodiments of the application;

[0052] Figure 4 This is a fourth logic diagram of the method for adjusting the output voltage of the display panel provided in the embodiments of this application;

[0053] Figure 5 This is a fifth logic diagram of the method for adjusting the output voltage of a display panel provided in the embodiments of this application;

[0054] Figure 6 This is a sixth logic diagram of the method for adjusting the output voltage of a display panel provided in the embodiments of this application;

[0055] Figure 7 This is a schematic diagram of the structure of the display panel output voltage adjustment device provided in the embodiments of this application. Detailed Implementation

[0056] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0058] In this application, the term "exemplary" is used to mean "serving as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use the invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the invention can be made without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the invention with unnecessary detail. Therefore, the invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0059] This application provides a method, apparatus, storage medium, and server for adjusting the output voltage of a display panel, aiming to solve the technical problem of slow output voltage adjustment speed of existing display panels.

[0060] First, such as Figure 1 As shown, this application discloses a method for adjusting the output voltage of a display panel, comprising:

[0061] S100, Obtain the measured brightness of the display panel;

[0062] S200, Based on the measured brightness, obtain the adjustment coefficient corresponding to the measured brightness;

[0063] S300, Obtain the reference table, which has a preset mapping relationship between different adjustment coefficients and reference voltage;

[0064] S400, based on the adjustment coefficient and the lookup table, adjust the output voltage of the display panel to the reference voltage corresponding to the adjustment coefficient.

[0065] In the technical solution of this application embodiment, the measured brightness of the display panel is obtained, and an adjustment coefficient corresponding to the measured brightness is obtained; according to the mapping relationship between the adjustment coefficient and the reference voltage, the reference voltage corresponding to the adjustment coefficient is obtained, and this reference voltage is used as the adjusted output voltage of the display panel to achieve the purpose of compensation. Compared with the prior art, the technical solution of this application can shorten the automatic adjustment time by detecting brightness and calling the corresponding lookup table, thereby increasing production capacity.

[0066] The technical solution of this application embodiment is to adjust the output voltage of a display panel during its quality inspection process while it is in production. In the embodiment, the brightness of the display panel is generally detected by a brightness detection device (such as an optical detection instrument CA410), and then the processor obtains the measured brightness of the display panel. After obtaining the measured brightness, the processor calculates an adjustment coefficient. By calling the mapping relationship between the adjustment coefficient and the reference voltage in the lookup table, the reference voltage corresponding to the adjustment coefficient is obtained, and then this reference voltage is used as the output voltage of the display panel.

[0067] As an optional implementation of the above embodiment, as shown in the figure, after the step of adjusting the output voltage of the display panel to a reference voltage corresponding to the adjustment coefficient based on the adjustment coefficient and the lookup table, the adjustment method further includes: S500, writing the reference voltage corresponding to the adjustment coefficient into the memory of the display panel, so that the display panel can be driven by the reference voltage when the display panel is started. That is, after obtaining the reference voltage of the display panel, the reference voltage is written into the memory of the display panel, so that the reference voltage can be used as its operating voltage to drive the display panel to work when the display panel is started, thereby achieving the purpose of adjustment.

[0068] In this embodiment, the lookup table is typically pre-installed in a device containing a processor, such as in the software for the PG LED. The lookup table is a mapping table between a reference voltage and an adjustment factor (brightness) derived after calibration of a standard panel. The process of creating the lookup table includes:

[0069] Enable the comparison and restoration function, use a PG LED to light it, adjust the flicker mode, and then enable voltage adjustment to ensure optimal voltage. Taking a 223 grayscale level as an example, light the LED with an initial reference voltage value of gamma3, and use a CA410 to detect the brightness, denoted as L. 223 Calculate the adjustment coefficient γ 223 Adjusting coefficient γ 223 The corresponding preset reference voltage value gamma3 is recorded in a mapping manner; the reference voltage is adjusted so that the adjustment coefficient changes according to the preset step value; multiple sets of debugging are completed, and multiple sets of adjustment coefficients and corresponding reference voltages are recorded to obtain the mapping relationship between the adjustment coefficients and corresponding reference voltages of the 223 grayscale. After completing the 223 grayscale, the same steps can be followed to obtain the mapping relationship between the adjustment coefficients and corresponding reference voltages of grayscales such as 255, 254, 127, 31, 15, and 0. The mapping relationships between the adjustment coefficients and corresponding reference voltages of each grayscale are then organized to obtain multiple sets of call-to-reference tables. The obtained call-to-reference tables can be placed in the PG lighting software.

[0070] As an optional implementation of the above embodiments, the display panel can display at multiple gray levels, thus the display panel has different measured brightness when displayed at different gray levels. For example, the gray levels include 255 gray level, 254 gray level, 223 gray level, 127 gray level, 31 gray level, 15 gray level, and 0 gray level. During the test, a PG lamp is used to light up the display panel, and each gray level in the display panel corresponds to a measured brightness.

[0071] like Figure 2 As shown, obtaining the measured brightness of the display panel includes: S110, obtaining the measured brightness corresponding to different grayscale levels of the display panel. For example, 255 grayscale, 254 grayscale, 223 grayscale, 127 grayscale, 31 grayscale, 15 grayscale, and 0 grayscale correspond to measured brightness L respectively. 255 L 254 L 223 L 127 L 31 L 15 And L0.

[0072] Based on the measured brightness, the adjustment coefficients are obtained as follows: S210, based on multiple measured brightness values ​​corresponding to different grayscale displays, multiple target adjustment coefficients are obtained corresponding to the multiple measured brightness values. For example, based on the measured brightness L corresponding to 255 grayscale, 254 grayscale, 223 grayscale, 127 grayscale, 31 grayscale, 15 grayscale, and 0 grayscale respectively... 255 L 254 L 223 L 127 L 31 L 15 The corresponding adjustment coefficient γ is obtained from L0. 255 γ 254 γ 223 γ 127 γ 31 γ 15 And γ0.

[0073] The step of adjusting the reference voltage of the display panel to a reference voltage corresponding to the adjustment coefficient based on the adjustment coefficient and the lookup table includes: S410, adjusting the output voltage of the display panel when displaying different grayscale levels to a reference voltage corresponding to the target adjustment coefficient for the corresponding grayscale display, based on the multiple target adjustment coefficients and the lookup table. According to the adjustment coefficient γ 255 γ 254 γ 223 γ 127 γ 31 γ 15By referring to the lookup table with γ0, the reference voltages gamma1, gamma2, gamma3, gamma4, gamma5, gamma6, and gamma7 corresponding to gray levels of 255, 254, 223, 127, 31, 15, and 0 are obtained, respectively. These are then used as the output voltages corresponding to gray levels of 255, 254, 223, 127, 31, 15, and 0.

[0074] In the above embodiments, by calling multiple grayscale reference tables, the output voltage of different grayscales can be obtained simultaneously, thereby improving the adjustment efficiency of the display panel output voltage.

[0075] It should be noted that the display panel has 0 to 255 gray levels. In this embodiment, the gray level is selected based on specific product requirements.

[0076] As an optional implementation of the above embodiments, the measured brightness, the grayscale, and the adjustment coefficient satisfy the following relationship:

[0077]

[0078] In the formula, γ x L is the adjustment coefficient; x is the gray level; L x L0 represents the measured brightness; L0 represents the standard brightness at grayscale 0; L 255 The standard brightness is 255 gray levels.

[0079] For example, for grayscale 223, its adjustment coefficient γ 223 It can be calculated using the following formula:

[0080]

[0081] In the formula, γ 223 The adjustment coefficient for grayscale 223; L 223 L1 represents the measured brightness at grayscale level 223; L0 represents the standard brightness at grayscale level 0; L 255 The standard brightness is 255 gray levels.

[0082] As an optional implementation of the above embodiments, the call lookup table includes multiple standard coefficient ranges and multiple reference voltages. Each standard coefficient range corresponds to one reference voltage. In some specific embodiments, based on debugging experiments, multiple sets of call sub-tables (with an increment value of 0.1) are obtained, as shown in the table below.

[0083]

[0084] As can be seen from the table, when γ xThe value is [2.1, 2.3], and the corresponding grayscale output voltage is determined as the initial set value; while when γ x If the value is not in [2.1,2.3], the output voltage of the corresponding grayscale is determined by adding an increment to the initial setting value as voltage compensation, thereby enabling brightness compensation.

[0085] like Figure 3 As shown, adjusting the output voltage of the display panel to the output voltage corresponding to the adjustment coefficient based on the adjustment coefficient and the lookup table includes: S420, adjusting the output voltage of the display panel to a reference voltage within the standard coefficient range corresponding to the adjustment coefficient based on the standard coefficient range and the adjustment coefficient. In an embodiment, when the adjustment coefficient γ x When the voltage is within the standard coefficient range, the preset value of the corresponding gray level is used as the reference voltage. For example, when γ is calculated using the formula... 223 When γ = 2.08, it falls within the range of [2.0, 2.1), and its corresponding reference voltage is Gamma3 = g_3 - b1. For example, when γ is calculated using the formula... 223 When γ = 2.25, it falls within the range of [2.1, 2.3], and its corresponding reference voltage is Gamma3 = g_3. For example, when γ is calculated using the formula... 15 When = 1.85, it falls within the range of [1.8, 1.9), and its corresponding reference voltage is Gamma6 = g_6 - e3.

[0086] As an optional implementation of the above embodiments, such as Figure 4 As shown, the step of adjusting the output voltage of the display panel to a reference voltage within the standard coefficient range corresponding to the adjustment coefficient, based on the standard coefficient range and the adjustment coefficient, includes: S430, if the adjustment coefficient is not within any of the standard coefficient ranges, the display panel is determined to be defective; if the adjustment coefficient is within any of the plurality of standard coefficient ranges, the output voltage of the display panel is adjusted to a reference voltage within the standard coefficient range corresponding to the adjustment coefficient. In an embodiment, for example, when γ is calculated by a formula... 223 When γ = 2.08, it falls within the range of [2.0, 2.1), and its corresponding reference voltage is Gamma3 = g_3 - b1. In an embodiment, for example, when γ is calculated using the formula... 223 If the value is 2.85, then it is not within the range of any standard coefficient in the reference table, and the display panel is determined to be defective.

[0087] In this embodiment, the call lookup table includes multiple progressive values ​​and multiple sets of call sub-tables; each progressive value corresponds to a set of call sub-tables. For example, in the table above, the progressive value is 0.1, meaning that a reference voltage is determined every 0.1, and then a corresponding reference voltage is determined for each standard coefficient range to form the call sub-table corresponding to 0.1. Similarly, the progressive value can also be set to 0.05, 0.02, 0.15, 0.2, etc., to correspond to multiple sets of call sub-tables respectively. The progressive value is used to represent the length of the standard coefficient range, indicating the adjustment precision. The value of the progressive value is determined according to the quality requirements of the QLED panel. For example, the smaller the progressive value, the higher the quality required for the QLED panel.

[0088] The process of obtaining the reference table, wherein the reference table contains preset mapping relationships between different adjustment coefficients and reference voltages, includes:

[0089] S310, Obtain the first call sub-table corresponding to the first advanced value. The first call sub-table has a first mapping relationship between different adjustment coefficients corresponding to the first advanced value and the reference voltage.

[0090] The step of adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the reference table includes:

[0091] S440, based on the target adjustment coefficient and the first call sub-table, adjust the output voltage of the display panel to the first reference voltage corresponding to the target adjustment coefficient;

[0092] S610, drive the display panel with the first reference voltage corresponding to the target adjustment coefficient, and determine whether the display effect of the display panel meets the standard;

[0093] In the above embodiments, a step-up value of 0.1 can be used as the first step-up value, and the corresponding first call sub-table is shown in the table above. In some embodiments, it is known that the range of γ specification coefficients used in factory production is: 2.1 ≤ γ x ≤2.3. The adjustment coefficient corresponding to the brightness is γ. x γ x The mapping relationship with the corresponding reference voltage is as follows:

[0094] When 2.1≤γ x When the value is ≤2.3, bypass and directly call the preset gamma value;

[0095] When 2.0≤γ x When <2.1, call multiple sets of gamma values ​​corresponding to γ+0.1 in the reference table;

[0096] When 1.9≤γ xWhen <2.0, call multiple sets of gamma values ​​corresponding to γ+0.2 in the reference table;

[0097] When 1.8≤γ x When <1.9, call multiple sets of gamma values ​​corresponding to γ+0.3 in the reference table;

[0098] When 1.7≤γ x When <1.8, call multiple sets of gamma values ​​corresponding to γ+0.4 in the reference table;

[0099] When 2.3 < γ x When ≤2.4, call the gamma value corresponding to γ-0.1 in the multiple gamma call reference table;

[0100] When 2.4 < γ x When ≤2.5, call the gamma value corresponding to γ-0.2 in the multiple gamma call reference table;

[0101] When 2.5 < γ x When ≤2.6, call the gamma value corresponding to γ-0.3 in the multiple gamma call reference table;

[0102] When 2.6 < γ x When the value is ≤2.7, multiple gamma values ​​are called from the reference table corresponding to γ-0.4.

[0103] If γ x If it is not within the above range, the display panel will determine it as NG.

[0104] For example, taking a 5-point adjustable model as an example, the calculated adjustment points for automatic voltage regulation are L254, L223, L127, L31, and L15 (L255 and L0 are not adjusted; their initial values ​​are directly called). Where:

[0105] L 254 Grayscale, γ is calculated by detection 254 =2.2;

[0106] L 223 Grayscale, γ is calculated by detection 223 =2.0;

[0107] L 127 Grayscale, γ is calculated by detection 127 =2.4;

[0108] L 31 Grayscale, γ is calculated by detection 31 =1.9;

[0109] L 15 Grayscale, γ is calculated by detection15 =2.5.

[0110] Finally, based on the adjustment coefficient γ corresponding to each gray level... x The reference voltage obtained by calling the lookup table is:

[0111] Luminance [[ L 255 ]]> [[ L 254 ]]> [[ L 223 ]]> [[ L 127 ]]> [[ L 31 ]]> [[ L 15 ]]> ​ Voltage Gamma1 Gamma2 Gamma3 Gamma4 Gamma5 Gamma6 Gamma7 Reference voltage g_1 g_2 g_3-b2 g_4+c8 g_5-d3 g_6+e7 g_7

[0112] If the display effect obtained by driving the display panel with the above reference voltage meets the requirements, then the reference voltage is used as the output voltage of the display panel, and the set of output voltages is written into the memory corresponding to the display panel. When using the display panel, the set of output voltages is directly called to drive the display panel. If the display effect obtained by driving the display panel with the above reference voltage does not meet the requirements, then the second call sub-table corresponding to a smaller step value can be called again to redetermine the reference voltage, and the display panel can be driven according to the redetermined reference voltage.

[0113] Following the above embodiments, if not, the step of obtaining the reference table, wherein the reference table has a preset mapping relationship between different adjustment coefficients and reference voltage, further includes:

[0114] S320, obtain the second call sub-table corresponding to the second advanced value, the second call sub-table has a preset second mapping relationship between different adjustment coefficients and reference voltage; wherein, the second advanced value is less than the first advanced value;

[0115] The step of adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient based on the target adjustment coefficient and the reference table includes:

[0116] S450, based on the target adjustment coefficient and the second call sub-table, adjust the output voltage of the display panel to the second reference voltage corresponding to the target adjustment coefficient;

[0117] S620, drive the display panel with the second reference voltage corresponding to the target adjustment coefficient, and determine whether the display effect of the display panel meets the standard;

[0118] If so, then in S630, the second reference voltage is used as the output voltage of the display panel.

[0119] In the above embodiments, the second advance value can be 0.05, and the corresponding second call sub-table is shown in the table below.

[0120]

[0121]

[0122] In some embodiments, it is known that the range of γ specification coefficients used in factory production is: 2.1 ≤ γx ≤2.3. The adjustment coefficient corresponding to the brightness is γ. x γ x The mapping relationship with the corresponding reference voltage is as follows:

[0123] When 2.1≤γ x When the value is ≤2.3, bypass and directly call the preset gamma value;

[0124] When 2.05≤γ x When <2.1, call multiple sets of gamma values ​​corresponding to γ+0.05 in the gamma reference table;

[0125] When 2.0≤γ x When <2.05, call the gamma value corresponding to γ+0.1 in the multiple gamma call reference table;

[0126] When 1.95≤γ x When <2.0, call multiple sets of gamma values ​​corresponding to γ+0.15 in the gamma reference table;

[0127] When 1.9≤γ x When <1.95, call multiple sets of gamma values ​​corresponding to γ+0.2 in the reference table;

[0128] …

[0129] When 2.3 < γ x When ≤2.35, call the gamma value corresponding to γ-0.05 in the multiple gamma call reference table;

[0130] When 2.35 < γ x When ≤2.4, call the gamma value corresponding to γ-0.1 in the multiple gamma call reference table;

[0131] When 2.4 < γ x When ≤2.45, call the gamma value corresponding to γ-0.15 in the multiple gamma call reference table;

[0132] When 2.45 < γ x When the value is ≤2.5, multiple gamma values ​​are called from the reference table corresponding to γ-0.2.

[0133] …

[0134] For example, taking a 5-point adjustable model as an example, the calculated adjustment points for automatic voltage regulation are L254, L223, L127, L31, and L15 (L255 and L0 are not adjusted; their initial values ​​are directly called). Where:

[0135] L 254Grayscale, γ is calculated by detection 254 =2.2;

[0136] L223 grayscale, the detection calculation yields γ223=2.0;

[0137] L127 grayscale, the detection calculation yields γ127=2.4;

[0138] L31 grayscale, the detection calculation yields γ31=1.9;

[0139] L15 grayscale, the detection calculation yields γ15 = 2.5.

[0140] Finally, based on the adjustment coefficient γ corresponding to each gray level... x The reference voltage obtained by calling the lookup table is:

[0141] Luminance [[ L 255 ]]> [[ L 254 ]]> L 223 ]]> [[ L 127 ]]> L 31 ]]> L 15 ]]> ​ Voltage Gamma1 Gamma2 Gamma3 Gamma4 Gamma5 Gamma6 Gamma7 Reference voltage g_1 g_2 g_3-h2 g_4+i6 g_5-j4 g_6+k8 g_7

[0142] If the display effect driven by the redefined reference voltage meets the standard, then the redefined reference voltage is used as the output voltage of the display panel. If the display effect driven by the redefined reference voltage still meets the standard, then the third call sub-table corresponding to the next smaller progressive value is called again, and the above steps are repeated until the display effect meets the standard. If the display effect still does not meet the standard after calling all call sub-tables, then the display panel is judged to be NG (not good) or needs to be returned for repair.

[0143] This application also proposes a device for adjusting the output voltage of a display panel, such as... Figure 7 As shown, it includes:

[0144] The acquisition module 100 is adapted to acquire the measured brightness of the display panel and call up a lookup table;

[0145] Calculation module 200 is adapted to obtain adjustment coefficients based on the measured brightness;

[0146] The adjustment module 300 is adapted to adjust the output voltage of the display panel to a reference voltage corresponding to the adjustment coefficient based on the adjustment coefficient and a lookup table.

[0147] As an optional implementation of the above embodiments, the display panel includes multiple gray levels; the acquisition module 100 is further adapted to acquire multiple measured brightness corresponding to the multiple gray levels of the display panel respectively;

[0148] The calculation module 200 is further adapted to obtain multiple adjustment coefficients corresponding to the multiple measured brightness values ​​based on the multiple measured brightness values;

[0149] The adjustment module 300 is further adapted to adjust the output voltage of multiple gray levels of the display panel to a reference voltage corresponding to the adjustment coefficient of each gray level, based on the multiple adjustment coefficients and the reference table.

[0150] As an optional implementation of the above embodiments, the reference table includes multiple standard coefficient ranges and multiple reference voltages; wherein each standard coefficient range corresponds to one reference voltage. The adjustment module 300 is further adapted to adjust the output voltage of the display panel to a reference voltage of the standard coefficient range corresponding to the adjustment coefficient, based on the standard coefficient range and the adjustment coefficient.

[0151] The adjustment module 300 is further adapted to determine that the display panel is defective if the adjustment coefficient is not within any of the standard coefficient ranges; and to adjust the output voltage of the display panel to a reference voltage within the standard coefficient range corresponding to the adjustment coefficient if the adjustment coefficient is within any of the plurality of standard coefficient ranges.

[0152] The reference table includes multiple advanced values; each advanced value corresponds to a standard coefficient range; the adjustment module 300 is further adapted to determine the advanced value corresponding to the adjustment coefficient based on the standard coefficient range and the adjustment coefficient; and adjust the output voltage of the display panel to a reference voltage corresponding to the advanced value based on the advanced value corresponding to the adjustment coefficient.

[0153] This application also proposes a server, comprising:

[0154] One or more processors;

[0155] Memory; and

[0156] One or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the method for adjusting the output voltage of the display panel.

[0157] This application also proposes a computer-readable storage medium having a computer program stored thereon, the computer program being loaded by a processor to execute the steps in the method for adjusting the output voltage of the display panel.

[0158] This application also proposes a server, including: one or more processors; a memory; and one or more applications, wherein the one or more applications are stored in the memory and configured to be executed by the processor to implement the adjustment method as described above.

[0159] A processor may include one or more processing cores, such as a quad-core processor or an octa-core processor. The processor can be implemented using at least one hardware form of DSP (Digital Signal Processing), FPGA (Field-Programmable Gate Array), or PLA (Programmable Logic Array). The processor may also include a main processor and coprocessors. The main processor, also known as the CPU (Central Processing Unit), is used to process data in the wake-up state; the coprocessor is a low-power processor used to process data in the standby state. In some embodiments, the processor may integrate a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content to be displayed on the screen. The processor may also include an AI (Artificial Intelligence) processor.

[0160] The memory may include one or more computer-readable storage media, which may be non-transitory. The memory may also include high-speed random access memory and non-volatile memory, such as one or more disk storage devices or flash memory devices. In some embodiments, the non-transitory computer-readable storage media in the memory are used to store at least one instruction, which is executed by a processor to implement the server adjustment method provided in the method embodiments of this application.

[0161] The above provides a detailed description of a method, apparatus, storage medium, and server for adjusting the output voltage of a display panel according to embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will recognize that there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A method for adjusting the output voltage of a display panel, characterized in that, The method comprises the following steps: obtaining a measured luminance of the display panel; based on the measured luminance, obtaining a target adjustment coefficient corresponding to the measured luminance; obtaining a calling table, wherein different adjustment coefficients and reference voltages are preconfigured in the calling table; based on the target adjustment coefficient and the calling table, adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient; wherein the step of obtaining the measured luminance of the display panel comprises: obtaining the measured luminance corresponding to different gray scale displays of the display panel respectively; based on the measured luminance, obtaining the target adjustment coefficient comprises: based on the multiple measured luminances corresponding to different gray scale displays, obtaining multiple target adjustment coefficients corresponding to the multiple measured luminances; based on the multiple target adjustment coefficients and the calling table, adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient of the corresponding gray scale display. The measured luminance, the gray scale and the target adjustment coefficient satisfy the following relationship:

2. The adjustment method of claim 1, wherein, wherein γx is the target adjustment coefficient; x is the gray scale; Lx is the measured luminance; L0 is the standard luminance of 0 gray scale; L255 is the standard luminance of 255 gray scale. The calling table comprises multiple standard coefficient ranges and multiple reference voltages; wherein each standard coefficient range corresponds to a reference voltage; 3. The adjustment method of claim 1, wherein, based on the standard coefficient range and the target adjustment coefficient, adjusting the output voltage of the display panel to a reference voltage corresponding to the standard coefficient range corresponding to the target adjustment coefficient. based on the standard coefficient range and the target adjustment coefficient, adjusting the output voltage of the display panel to a reference voltage corresponding to the standard coefficient range corresponding to the target adjustment coefficient. If the target adjustment coefficient is not in any of the standard coefficient ranges, it is determined that the display panel is a defective product; 4. The adjustment method of claim 3, wherein, If the target adjustment coefficient is in any of the multiple standard coefficient ranges, the output voltage of the display panel is adjusted to a reference voltage corresponding to the standard coefficient range corresponding to the target adjustment coefficient. The calling table comprises multiple advanced values and multiple groups of calling sub-tables; each advanced value corresponds to a group of calling sub-tables; obtaining a first calling sub-table corresponding to a first advanced value, wherein a first mapping relationship between different adjustment coefficients corresponding to the first advanced value and reference voltages is preconfigured in the first calling sub-table; 5. The adjustment method of claim 1, wherein, based on the target adjustment coefficient and the calling table, adjusting the output voltage of the display panel to a reference voltage corresponding to the target adjustment coefficient comprises: ​ ​ ​ adjusting, based on the target adjustment coefficient and the first calling sub-table, an output voltage of the display panel to a first reference voltage corresponding to the target adjustment coefficient; driving the display panel with the first reference voltage corresponding to the target adjustment coefficient to determine whether the display effect of the display panel meets the standard; if not, obtaining a calling contrast table, the calling contrast table having a preset mapping relationship between different adjustment coefficients and reference voltages further comprising: obtaining a second calling sub-table corresponding to a second progressive value, the second calling sub-table having a second preset mapping relationship between different adjustment coefficients and reference voltages corresponding thereto; wherein the second progressive value is smaller than the first progressive value; the adjusting, based on the target adjustment coefficient and the calling contrast table, the output voltage of the display panel to the reference voltage corresponding to the target adjustment coefficient further comprising: adjusting, based on the target adjustment coefficient and the second calling sub-table, the output voltage of the display panel to a second reference voltage corresponding to the target adjustment coefficient; driving the display panel with the second reference voltage corresponding to the target adjustment coefficient to determine whether the display effect of the display panel meets the standard; if yes, taking the second reference voltage as the output voltage of the display panel.

6. The adjustment method of claim 1, wherein, after the adjusting, based on the target adjustment coefficient and the calling contrast table, the output voltage of the display panel to the reference voltage corresponding to the target adjustment coefficient, the adjusting method further comprising: writing the reference voltage corresponding to the target adjustment coefficient into the memory of the display panel for driving the display panel with the reference voltage when the display panel is started.

7. A device for adjusting the output voltage of a display panel, characterized in that, comprising: an obtaining module configured to obtain measured luminances corresponding to different gray scale displays of the display panel respectively, and to obtain a calling contrast table; wherein the calling contrast table has a preset mapping relationship between adjustment coefficients and reference voltages; a calculating module configured to obtain a plurality of target adjustment coefficients corresponding to the plurality of measured luminances based on the plurality of measured luminances corresponding to different gray scale displays; an adjusting module configured to adjust, based on the plurality of target adjustment coefficients and the calling contrast table, output voltages of the display panel in different gray scale displays to reference voltages corresponding to target adjustment coefficients in corresponding gray scale displays.

8. A server, characterized by comprising: one or more processors; a memory; and one or more application programs, wherein the one or more application programs are stored in the memory and configured to be executed by the processor to implement the adjusting method of the output voltage of the display panel according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, a computer program is stored thereon, the computer program is loaded by a processor to execute the steps in the adjusting method of the output voltage of the display panel according to any one of claims 1 to 6.

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