Flashing value-seeking method, driving control method, value-seeking device and readable storage medium

Abstract

The present invention discloses a flicker value-finding method, comprising the steps of: detecting the screen flicker of a display to be detected within a preset common voltage range, obtaining an initial curve and a fitting straight line about the common voltage-screen flicker corresponding to the display to be detected; determining the minimum screen flicker in the initial curve, and generating a horizontal straight line corresponding to the minimum screen flicker according to the minimum screen flicker; determining the target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line. The present invention also discloses a drive control method, a value-finding device and a readable storage medium. By applying the flicker value-finding method of the present invention to the value-finding device, the time for finding the target common voltage can be greatly shortened, thereby improving the production efficiency of the display and the work efficiency of the staff.

Description

Technical Field

[0001] The present invention relates to the field of liquid crystal displays, and in particular to a flashing value-seeking method, a driving control method, a value-seeking device and a readable storage medium. Background Art

[0002] As the mainstream display medium in various fields of today's society, liquid crystal displays are becoming more and more popular. With the improvement of people's quality of life, the display quality of liquid crystal displays is also receiving more and more attention. Screen flicker (Flicker), as a problem that is difficult to eradicate for liquid crystal displays, not only reduces the display quality, but also causes physiological discomfort to the human body in severe cases. This is mainly because the liquid crystal needs to always maintain a fixed flip angle in an alternating electric field. Each time the liquid crystal display completes a frame scan, the electric field changes once, which is the root cause of the screen flicker. For an LCD display, the lower the percentage of screen flicker, the better the display effect, the less harm to the human body, and the better the quality of the LCD display. Therefore, how to reduce the screen flicker of LCD is a technical issue that all display manufacturers focus on. There is a high correlation between screen flicker and common voltage (VCOM). By determining the target common voltage corresponding to the LCD, the screen flicker of the LCD can be minimized to the greatest extent. In order to find the target common voltage, the current solutions mainly include segmentation method, simulation curve, cyclic value search, full measurement method, etc. However, the biggest technical defect of the above solutions is that the value search process is time-consuming. In the current production field that attaches great importance to efficiency, it has seriously affected the production efficiency of LCD. Therefore, there is an urgent need for a technical solution to quickly find the target common voltage so as to minimize the screen flicker. Summary of the invention

[0003] The present invention provides a flashing value-seeking method, a driving control method, a value-seeking device and a readable storage medium, aiming to shorten the value-seeking time of a target common voltage of a display.

[0004] To achieve the above object, the present invention provides a flicker value search method, comprising the following steps:

[0005] Detecting screen flicker of the display to be detected within a preset common voltage range, and obtaining an initial curve and a fitting straight line about common voltage-screen flicker corresponding to the display to be detected;

[0006] Determine the minimum screen flicker in the initial curve, and generate a horizontal straight line corresponding to the minimum screen flicker according to the minimum screen flicker;

[0007] The target common voltage of the display to be detected is determined according to the minimum screen flicker, the fitting straight line and the horizontal straight line.

[0008] Optionally, the step of detecting screen flicker of the display to be detected within a preset common voltage range and obtaining an initial curve and a fitting straight line about common voltage-screen flicker corresponding to the display to be detected includes:

[0009] Detecting screen flicker of the display to be detected within a preset common voltage range, and obtaining an initial curve of common voltage-screen flicker corresponding to the display to be detected;

[0010] According to the lowest point of the initial curve, determine the right coordinate point of the initial curve;

[0011] The discrete coordinate points in the right coordinate points are filtered, and a fitting straight line corresponding to the display to be detected is obtained by fitting.

[0012] Optionally, after the step of filtering the discrete coordinate points in the right coordinate points and fitting to obtain a fitting straight line corresponding to the display to be detected, the method further comprises:

[0013] Extracting two arbitrary sampling coordinate points of the fitting straight line, and calculating the slope of the fitting straight line;

[0014] Determine a maximum common voltage within the common voltage range, and determine a target screen flicker corresponding to the maximum common voltage;

[0015] According to the slope, the maximum common voltage and the corresponding target screen flicker are input into a straight line formula to obtain a first straight line formula corresponding to the fitting straight line.

[0016] Optionally, the step of determining the target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line includes:

[0017] Determine a common voltage corresponding to the minimum screen flicker;

[0018] Obtaining an intersection point between the fitting straight line and the horizontal straight line, and determining an intersection point voltage corresponding to the intersection point;

[0019] Taking the common voltage as the minimum value of the interval and the intersection voltage as the maximum value of the interval, generating a target common voltage interval;

[0020] The target common voltage of the display to be detected is determined according to the target common voltage interval.

[0021] Optionally, the step of obtaining the intersection point between the fitting straight line and the horizontal straight line includes:

[0022] Determine a second straight line formula for the horizontal straight line;

[0023] The intersection point between the fitting straight line and the horizontal straight line is calculated according to the first straight line formula and the second straight line formula.

[0024] Optionally, the step of determining the target common voltage of the display to be detected according to the target common voltage interval includes:

[0025] Detecting a display to be verified corresponding to the display to be detected, wherein the display to be detected and the display to be verified are displays from the same batch;

[0026] The minimum screen flicker of the display to be verified is determined within the target common voltage interval, and the common voltage corresponding to the minimum screen flicker of the display to be verified is used as the target common voltage.

[0027] Optionally, the step of detecting screen flicker of the display to be detected within a preset common voltage range and obtaining an initial curve and a fitting straight line about common voltage-screen flicker corresponding to the display to be detected includes:

[0028] Within the preset common voltage range, detection is performed once at every preset voltage interval to obtain all sampling coordinate points, and an initial curve of common voltage-screen flicker corresponding to the display to be detected is obtained according to all sampling coordinate points.

[0029] In addition, to achieve the above objectives, the present invention also provides a driving control method, which is applied to an IC chip, and the IC chip sends a driving signal and display data to a display panel with the target common voltage as the output voltage to drive the display panel.

[0030] In addition, to achieve the above-mentioned purpose, the present invention also provides a value-seeking device, which includes a memory, a processor, and a screen flickering value-seeking program stored in the memory and run on the processor, wherein: when the screen flickering value-seeking program is executed by the processor, the steps of the flickering value-seeking method as described above are implemented.

[0031] In addition, to achieve the above-mentioned purpose, the present invention also provides a readable storage medium, on which a screen flicker value search program is stored, and when the screen flicker value search program is executed by a processor, the steps of the flicker value search method described above are implemented.

[0032] The flicker value search method of the present invention first detects the screen flicker of the display to be detected within a preset common voltage range, obtains the initial curve and fitting straight line corresponding to the display to be detected about the common voltage-screen flicker, and initially limits the original common voltage interval to a smaller common voltage range and selects a smaller number of displays to be detected, which can greatly shorten the detection sampling time of the display, improve the sampling efficiency, and simply, intuitively and efficiently present the screen flicker detected by sampling to the technician in the form of a curve graph, which is convenient for evaluating the screen flicker of the liquid crystal display and is conducive to the subsequent search for the target common voltage. In addition, by determining the minimum screen flicker in the initial curve, generating a horizontal straight line corresponding to the minimum screen flicker according to the minimum screen flicker, and determining the target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line, the target common voltage can be obtained simply and quickly through the intersection between the curve and the straight line, shortening the time required for the search for the target common voltage, thereby improving the work efficiency of the liquid crystal display and the technician. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the terminal structure of the hardware operating environment of the value-seeking device involved in the embodiment of the present invention;

[0034] Figure 2 It is a flow chart of the first embodiment of the flashing value search method of the present invention;

[0035] Figure 3 A schematic diagram of a common voltage-screen flicker sampling method according to a first embodiment of the present invention;

[0036] Figure 4 It is a framework structure diagram of the flicker value-seeking method device involved in the flicker value-seeking method of the present invention. DETAILED DESCRIPTION

[0037] It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0038] like Figure 1 As shown, Figure 1 It is a schematic diagram of the terminal structure of the hardware operating environment of the value-seeking device involved in the embodiment of the present invention.

[0039] like Figure 1As shown, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display (Display), an input unit such as a control panel, and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a 5G interface). The memory 1005 may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may optionally be a storage device independent of the aforementioned processor 1001. The memory 1005 as a computer storage medium may include a screen flashing value search program.

[0040] Optionally, the terminal may further include a microphone, a speaker, an RF (Radio Frequency) circuit, a sensor, an audio circuit, a wireless module, etc. Among them, sensors such as infrared sensors, image sensors, acceleration sensors and other sensors are not described in detail here.

[0041] Those skilled in the art will understand that Figure 1 The terminal structure shown in the figure does not constitute a limitation on the terminal, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0042] like Figure 2 As shown, Figure 2 : is a flow chart of a first embodiment of a flashing value search method of the present invention. In this embodiment, the method includes:

[0043] Step S10, detecting screen flicker of the display to be detected within a preset common voltage range, and obtaining an initial curve and a fitting straight line about common voltage-screen flicker corresponding to the display to be detected;

[0044] In this embodiment, as the demand for image quality increases, customers want display products with wide viewing angles, high contrast, clearer screen quality, and smaller screen flicker (FLICKER). Due to the dynamic flipping of LCD products, the smaller the FLICKER of static images, the better the viewing experience of users when the product displays images, so FLICKER is currently an indicator that everyone pays close attention to.

[0045] Source of FLICKER:

[0046] The LCD display is realized by flipping the liquid crystal to see whether the light is transmitted. The transmittance of light is related to the flip (rotation) angle of the liquid crystal. The LCD displays realize the grayscale effect of a picture through the flip angle of the liquid crystal. When a static picture is displayed, the liquid crystal will also maintain a flip (rotation) angle unchanged. At the same time, in order to prevent the liquid crystal from being polarized, the electric field that makes the liquid crystal flip (rotate) is not a DC electric field, but an AC electric field with the same positive and negative half-cycle time and the same amplitude, so that the liquid crystal maintains a fixed flip (rotation) angle in an AC electric field. Every time the LCD completes a frame scan, the electric field will change once. In actual situations, this makes the positive and negative electric fields of the liquid crystal flip (rotation) angle usually cannot be guaranteed to be exactly the same, and when the flip (rotation) angle of the liquid crystal in these two electric fields is different, FLICKER is generated. Taking DC VCOM as an example, when the difference between the following grayscale positive pressure---VCOM and the difference between the negative pressure---VCOM are not equal, Flicker is generated.

[0047] In order to ensure that each product has the minimum FLICKER, each module manufacturer now performs OTP (One Time Programmable) FLICKER burning for each product. By changing the setting of the VCOM voltage register, the most suitable VCOM voltage for each product is found and the optimal setting is burned into the driver IC. Each time the module displays, it will call the previously burned value to obtain the best FLICKER for the product.

[0048] Each product needs to be programmed. The time for programming each chip is 18 to 25 seconds. Of this time, 12 to 15 seconds is spent on finding the best value. If the range is too small, the best value may not be found. If the range is too large, the time for finding the value will be longer. An adaptive range is prone to bugs, which may lead to abnormal finding. Regardless of the segmentation method, simulation curve, or loop finding method used by each manufacturer, time means cost, so we really want to reduce the time for the entire programming.

[0049] This embodiment is mainly applicable to liquid crystal displays made of a-Si (amorphous silicon). If liquid crystal displays made of other materials can also shorten the target common voltage search time by applying the present invention, they should also fall within the protection of the present invention.

[0050] In this embodiment, the liquid crystal display mainly includes two parts: a panel and an IC chip. Since the common voltage of the IC chip is in a relatively large rated voltage range, it is necessary to take a smaller voltage range in the rated voltage range of the IC chip to determine the preset common voltage range. The specific determination of the preset common voltage range can be configured according to actual needs. In this embodiment, the preset common voltage range can be determined according to the middle value of the rated voltage range. Specifically, the middle value is used as a reference value, the difference between the middle value and the preset value is used as the minimum value of the preset common voltage range, and the sum of the middle value and the preset value is used as the maximum value of the preset common voltage. The preset common voltage range is determined according to the above minimum and maximum values. For example, if the preset value is 10 and the rated voltage range of the IC chip is (0,50), then the middle value is 25, and (15,35) can be taken as the preset common voltage range.

[0051] The preset number of displays to be tested can be determined according to actual needs. For example, 10 displays to be tested from the same production batch are selected.

[0052] The LCD display can be tested and sampled within a preset common voltage range by the comparison method and the JEITA method. All the sampling coordinate points are first obtained in a value-seeking device such as a computer, and then a V-shaped initial curve is obtained based on all the sampling coordinate points. Based on the initial curve, part of the curve in the initial curve is fitted into a fitting straight line.

[0053] Specifically, in one embodiment, the step S10 includes:

[0054] Step a, detecting screen flicker of a display to be detected within a preset common voltage range, and obtaining an initial curve of common voltage-screen flicker corresponding to the display to be detected;

[0055] Step b, determining the right coordinate point of the initial curve according to the lowest point of the initial curve;

[0056] Step c: filtering the discrete coordinate points in the right coordinate points, and fitting to obtain a fitting straight line corresponding to the display to be detected.

[0057] You can continue to refer to Figure 3 , Figure 3 FIG. 1 is a schematic diagram of a common voltage-screen flicker sampling method according to the first embodiment of the flicker value search method of the present invention. Figure 3 As shown, Figure 3It is the common voltage-screen flicker coordinate system, the horizontal axis is marked with VCOM voltage value, the vertical axis is marked with flicker value, and the original VCOM voltage range value is the preset common voltage range. There are three lines in the coordinate system, namely the original flicker curve (initial curve), the theoretical optimal flicker value Y1 straight line, and the fitting straight line Y=KX+B obtained by fitting the initial curve.

[0058] exist Figure 3 It is easy to determine the lowest point of the initial curve in the coordinate system. According to the lowest point, the initial curve is divided into two parts, the left and the right. The curve in the right part is filtered by discrete sampling coordinate points and approximately fitted to a fitting straight line of Y=KX+B.

[0059] In one embodiment, after step c, the following steps are included:

[0060] Step d, extracting two arbitrary sampling coordinate points of the fitting straight line, and calculating the slope of the fitting straight line;

[0061] Step e, determining a maximum common voltage within the common voltage range, and determining a target screen flicker corresponding to the maximum common voltage;

[0062] Step f: inputting the maximum common voltage and the corresponding target screen flicker into a preset straight line formula according to the slope to obtain a first straight line formula corresponding to the fitting straight line.

[0063] Reference Figure 3 The fitting line covers multiple sampling coordinate points. By taking any two sampling coordinate points in the fitting line, the slope K value of the fitting line Y=KX+B can be calculated. The maximum common voltage in the common voltage range, i.e., the horizontal coordinate corresponding to the right end point of the fitting line, is determined, and the screen flicker corresponding to the maximum common voltage is determined. The screen flicker here is directly obtained by sampling and testing the LCD display.

[0064] On the premise that the slope is known, the maximum common voltage and the screen flashing corresponding to the maximum common voltage, that is, the coordinates of the right endpoint of the fitting straight line are substituted into Y=KX+B, and the offset of the fitting straight line is obtained, thereby obtaining the actual straight line formula of the fitting straight line, that is, the first straight line formula in this embodiment.

[0065] Step S20, determining the minimum screen flicker in the initial curve, and generating a horizontal straight line corresponding to the minimum screen flicker according to the minimum screen flicker;

[0066] You can continue to refer to Figure 3, the minimum screen flicker in the initial curve can be the lowest point of the initial curve in the coordinate system, determine the ordinate of the lowest point, and use the ordinate as the linear formula of the horizontal line. For example, the ordinate of the lowest point is 6, and the corresponding linear formula of the horizontal line is Y1=6. In addition, because the initial curve is also generated based on the sampling coordinate points directly obtained by sampling the liquid crystal display, the coordinate point corresponding to the lowest screen flicker in the sampling coordinate points can also be used as the minimum screen flicker of the initial curve, and the sum of the minimum screen flicker and the preset horizontal offset value is calculated according to the preset horizontal offset value, and the horizontal line corresponding to the minimum screen flicker is generated according to the sum. The preset horizontal offset is 0.5, for example, the minimum screen flicker is 5, then the corresponding horizontal line Y1=5.5.

[0067] Step S30 , determining a target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line.

[0068] Specifically, step S30 includes:

[0069] Step g, determining the common voltage corresponding to the minimum screen flicker;

[0070] Step h, obtaining the intersection point between the fitting straight line and the horizontal straight line, and determining the intersection point voltage corresponding to the intersection point;

[0071] Step i, taking the common voltage as the minimum value of the interval and the intersection voltage as the maximum value of the interval to generate a target common voltage interval;

[0072] Step j: determining the target common voltage of the display to be detected according to the target common voltage interval.

[0073] Among them, the common voltage corresponding to the minimum screen flicker has been detected when sampling the liquid crystal display. According to the linear formula of the fitted straight line and the linear formula of the horizontal line, the intersection between the two can be obtained. Specifically, the linear formulas of the two are made equal, and the coordinates of the intersection are calculated. Determining the intersection coordinates determines the common voltage corresponding to the intersection (intersection voltage), and taking the common voltage corresponding to the minimum screen flicker as the minimum value of the target common voltage interval, and the intersection voltage as the minimum value of the target common voltage interval, the target common voltage of the liquid crystal display to be detected is obtained. In this way, the common voltage range required for detection is further greatly reduced in the preset common voltage, achieving Figure 3 VCOM voltage range value in the optimization algorithm.

[0074] In another embodiment, the step of obtaining the intersection point between the fitting straight line and the horizontal straight line includes:

[0075] Step k, determining a second straight line formula of the horizontal straight line;

[0076] Step 1: Calculate the intersection point between the fitting straight line and the horizontal straight line according to the first straight line formula and the second straight line formula.

[0077] As described above, the linear formula of the horizontal line can be determined based on the screen flicker (ordinate) corresponding to the lowest point of the initial curve, or based on the ordinate of the coordinate point corresponding to the lowest screen flicker among the sampled coordinate points.

[0078] By making the linear formula of the fitted straight line equal to the horizontal straight line formula, that is, Y1=Y, the coordinates of the intersection point between the fitted straight line and the horizontal straight line are obtained.

[0079] The target common voltage range can be determined quickly and easily by simply using mathematical formulas and the common voltage-screen flickering coordinates.

[0080] The flicker value search method of the present invention first detects the screen flicker of the display to be detected within a preset common voltage range, obtains the initial curve and fitting straight line corresponding to the display to be detected about the common voltage-screen flicker, and initially limits the original common voltage interval to a smaller common voltage range and selects a smaller number of displays to be detected, which can greatly shorten the detection sampling time of the display, improve the sampling efficiency, and simply, intuitively and efficiently present the screen flicker detected by sampling to the technician in the form of a curve graph, which is convenient for evaluating the screen flicker of the liquid crystal display and is conducive to the subsequent search for the target common voltage. In addition, by determining the minimum screen flicker in the initial curve, generating a horizontal straight line corresponding to the minimum screen flicker according to the minimum screen flicker, and determining the target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line, the target common voltage can be obtained simply and quickly through the intersection between the curve and the straight line, shortening the time required for the search for the target common voltage, thereby improving the work efficiency of the liquid crystal display and the technician.

[0081] Furthermore, based on the first embodiment of the flicker value-finding method of the present invention, a second embodiment of the flicker value-finding method of the present invention is proposed. In this embodiment, the step of determining the target common voltage of the display to be detected according to the target common voltage interval includes:

[0082] Step m, detecting a display to be checked corresponding to the display to be detected, wherein the display to be detected and the display to be checked are displays from the same batch;

[0083] Step n, determining the minimum screen flicker of the display to be checked within the target common voltage interval, and taking the common voltage corresponding to the minimum screen flicker of the display to be checked as the target common voltage.

[0084] The display to be checked refers to a liquid crystal display of the same production or product batch as the above-mentioned display to be checked, and the number of displays to be checked can be set according to actual needs. In order to further obtain an accurate target common voltage, the display to be checked is subjected to a secondary test in the target common voltage interval after the preset common voltage range is greatly narrowed, so as to quickly determine the minimum screen flicker in the target common voltage interval, that is, the best screen flicker, thereby determining the target common voltage corresponding to the best screen flicker. Finally, it is only necessary to burn the target common voltage into the register to ensure that the screen flicker of the liquid crystal display is in the best state when displaying, which can prevent the human body from being damaged by the screen flicker to the greatest extent. The whole process of finding the value of the target common voltage is greatly shortened in time compared with the traditional value-seeking method, thereby improving the production efficiency of the liquid crystal display.

[0085] In one embodiment, the step S10 includes:

[0086] Within the preset common voltage range, detection is performed once at every preset voltage interval to obtain all sampling coordinate points, and an initial curve corresponding to the display to be detected is obtained according to all the sampling coordinate points.

[0087] The preset voltage interval can be configured according to the characteristics of different IC chips, for example, 0.1, that is, the LCD display is sampled once every 0.1 value interval within the preset common voltage range, so that each sampling coordinate point is first obtained, the horizontal coordinate of each sampling coordinate point represents the common voltage, and the vertical coordinate represents the screen flicker. Connecting the sampling coordinate points into a line forms the initial curve corresponding to the display to be tested. The entire process has been automated, saving technicians' time and improving work efficiency.

[0088] In addition, to achieve the above objectives, the present invention also provides a driving control method, which is applied to an IC chip, and the IC chip uses the target common voltage in the above embodiment as the output voltage to send a driving signal and display data to a display panel to drive the display panel.

[0089] In addition, the present invention also provides a display, characterized in that the display includes a liquid crystal display panel, an IC chip and a light sensor, the IC chip is integrated with a common voltage regulation circuit and a screen flicker statistics circuit, wherein the common voltage regulation circuit is used to make the common voltage output by the IC chip a preset fixed value. The screen flicker statistics circuit is used to count the detected screen flicker data and output the screen flicker data to a storage device electrically connected to the display.

[0090] like Figure 4 As shown, Figure 4 The present invention also provides a flicker value-seeking method device, the flicker value-seeking method device comprising:

[0091] The screen flicker sampling module A10 is used to detect the screen flicker of the display to be detected within a preset common voltage range, and obtain an initial curve and a fitting straight line about the common voltage-screen flicker corresponding to the display to be detected;

[0092] The common voltage value finding module A20 is used to determine the minimum screen flicker in the initial curve, generate a horizontal straight line corresponding to the minimum screen flicker according to the minimum screen flicker; and determine the target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line.

[0093] Optionally, the picture flicker sampling module A10 is further used for:

[0094] Detecting screen flicker of the display to be detected within a preset common voltage range, and obtaining an initial curve of common voltage-screen flicker corresponding to the display to be detected;

[0095] According to the lowest point of the initial curve, determine the right coordinate point of the initial curve;

[0096] The discrete coordinate points in the right coordinate points are filtered, and a fitting straight line corresponding to the display to be detected is obtained by fitting.

[0097] Optionally, the picture flicker sampling module A10 is further used for:

[0098] Extracting two arbitrary sampling coordinate points of the fitting straight line, and calculating the slope of the fitting straight line;

[0099] Determine a maximum common voltage within the common voltage range, and determine a target screen flicker corresponding to the maximum common voltage;

[0100] According to the slope, the maximum common voltage and the corresponding target screen flicker are input into a straight line formula to obtain a first straight line formula corresponding to the fitting straight line.

[0101] Optionally, the common voltage value finding module A20 is further used for:

[0102] Determine a common voltage corresponding to the minimum screen flicker;

[0103] Obtaining an intersection point between the fitting straight line and the horizontal straight line, and determining an intersection point voltage corresponding to the intersection point;

[0104] Taking the common voltage as the minimum value of the interval and the intersection voltage as the maximum value of the interval, generating a target common voltage interval;

[0105] The target common voltage of the display to be detected is determined according to the target common voltage interval.

[0106] Optionally, the common voltage value finding module A20 is further used for:

[0107] Determine a second straight line formula for the horizontal straight line;

[0108] The intersection point between the fitting straight line and the horizontal straight line is calculated according to the first straight line formula and the second straight line formula.

[0109] Optionally, the common voltage value finding module A20 is further used for:

[0110] Detecting a display to be verified corresponding to the display to be detected, wherein the display to be detected and the display to be verified are displays from the same batch;

[0111] The best picture flicker of the display to be verified is determined within the target common voltage interval, and the common voltage corresponding to the best picture flicker is used as the target common voltage.

[0112] Optionally, the picture flicker sampling module A10 is further used for:

[0113] Within the preset common voltage range, detection is performed once at every preset voltage interval to obtain all sampling coordinate points, and an initial curve corresponding to the display to be detected is obtained according to all the sampling coordinate points.

[0114] The specific implementation of the flickering value-seeking method device of the present invention is basically the same as the above-mentioned flickering value-seeking method embodiments, and will not be repeated here.

[0115] In addition, the present invention also proposes a value-seeking device, which includes a memory, a processor, and a screen flickering value-seeking program stored in the memory and executable on the processor, and when the processor executes the screen flickering value-seeking program, the steps of the flickering value-seeking method described in the above embodiment are implemented.

[0116] The specific implementation of the value-seeking device of the present invention is basically the same as the embodiments of the above-mentioned flashing value-seeking method, and will not be described in detail here.

[0117] In addition, the present invention also proposes a readable storage medium, characterized in that the readable storage medium can be a computer-readable storage medium, including a screen flicker value search program, and when the screen flicker value search program is executed by a processor, it implements the steps of the flicker value search method described in the above embodiment.

[0118] The specific implementation of the readable storage medium of the present invention is basically the same as the above-mentioned embodiments of the flashing value-seeking method, and will not be described in detail here.

[0119] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0120] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a TV, mobile phone, computer, server, car machine, or network device, etc.) to execute the methods described in each embodiment of the present invention.

[0121] In the present invention, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0122] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0123] Although the embodiments of the present invention have been shown and described above, the scope of protection of the present invention is not limited thereto. It is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art can change, modify and replace the above embodiments within the scope of the present invention, and these changes, modifications and replacements should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. A flashing value search method, characterized in that: The following steps are involved: Detecting screen flicker of the display to be detected within a preset common voltage range, and obtaining an initial curve and a fitting straight line about common voltage-screen flicker corresponding to the display to be detected; Determine the minimum screen flicker in the initial curve, and generate a horizontal straight line corresponding to the minimum screen flicker according to the minimum screen flicker; Determining a target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line; The step of detecting the screen flicker of the display to be detected within a preset common voltage range and obtaining an initial curve and a fitting straight line about the common voltage-screen flicker corresponding to the display to be detected includes: Detecting screen flicker of the display to be detected within a preset common voltage range, and obtaining an initial curve of common voltage-screen flicker corresponding to the display to be detected; According to the lowest point of the initial curve, determine the right coordinate point of the initial curve; The discrete coordinate points in the right coordinate points are filtered, and a fitting straight line corresponding to the display to be detected is obtained by fitting.

2. The flashing value-seeking method according to claim 1, characterized in that: After the step of filtering the discrete coordinate points in the right coordinate points and fitting to obtain a fitting straight line corresponding to the display to be detected, the method includes: Extracting two arbitrary sampling coordinate points of the fitting straight line, and calculating the slope of the fitting straight line; Determine a maximum common voltage within the common voltage range, and determine a target screen flicker corresponding to the maximum common voltage; According to the slope, the maximum common voltage and the corresponding target screen flicker are input into a straight line formula to obtain a first straight line formula corresponding to the fitting straight line.

3. The flashing value-seeking method according to claim 2, characterized in that: The step of determining the target common voltage of the display to be detected according to the minimum screen flicker, the fitting straight line and the horizontal straight line comprises: Determine a common voltage corresponding to the minimum screen flicker; Obtaining an intersection point between the fitting straight line and the horizontal straight line, and determining an intersection point voltage corresponding to the intersection point; Taking the common voltage as the minimum value of the interval and the intersection voltage as the maximum value of the interval, generating a target common voltage interval; The target common voltage of the display to be detected is determined according to the target common voltage interval.

4. The flashing value-seeking method according to claim 3, characterized in that: The step of obtaining the intersection point between the fitting straight line and the horizontal straight line comprises: Determine a second straight line formula for the horizontal straight line; The intersection point between the fitting straight line and the horizontal straight line is calculated according to the first straight line formula and the second straight line formula.

5. The flashing value-seeking method according to claim 4, characterized in that: The step of determining the target common voltage of the display to be detected according to the target common voltage interval includes: Detecting a display to be verified corresponding to the display to be detected, wherein the display to be detected and the display to be verified are displays from the same batch; The minimum screen flicker of the display to be verified is determined within the target common voltage interval, and the common voltage corresponding to the minimum screen flicker of the display to be verified is used as the target common voltage.

6. The flashing value-finding method according to claim 1, characterized in that: The step of detecting the screen flicker of the display to be detected within a preset common voltage range and obtaining an initial curve and a fitting straight line about the common voltage-screen flicker corresponding to the display to be detected includes: Within the preset common voltage range, detection is performed once at every preset voltage interval to obtain all sampling coordinate points, and an initial curve of common voltage-screen flicker corresponding to the display to be detected is obtained according to all sampling coordinate points.

7. A drive control method, characterized in that: The driving control method is applied to an IC chip, and the IC chip uses the target common voltage described in claims 1 to 6 as an output voltage to send a driving signal and display data to a display panel to drive the display panel.

8. A value-seeking device, characterized in that: The value-seeking device includes a memory, a processor, and a screen flicker value-seeking program stored in the memory and executable on the processor, wherein: when the screen flicker value-seeking program is executed by the processor, the steps of the flicker value-seeking method as described in any one of claims 1 to 6 are implemented.

9. A readable storage medium, characterized in that: The readable storage medium stores a screen flicker value-seeking program, and when the screen flicker value-seeking program is executed by a processor, the steps of the flicker value-seeking method according to any one of claims 1 to 6 are implemented.

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