Display screen calibration method, device and terminal equipment

Abstract

The application belongs to the technical field of display screen calibration, and provides a display screen calibration method, a display screen calibration device and a terminal device. The display screen calibration method is applied to a display screen comprising a plurality of optical waveguide structure units, and comprises the following steps: detecting the influence caused by the deformation of the optical waveguide structure units to obtain a detection result; and selecting a corresponding calibration strategy according to the detection result to calibrate the display screen. Through the above method, accurate calibration of the display screen can be realized.

Description

Technical Field

[0001] This application belongs to the technical field of display screen calibration, and particularly relates to display screen calibration methods, apparatus, terminal equipment, and computer-readable storage media. Background Technology

[0002] In recent years, with the development of display devices and people's pursuit of aesthetics, the structure of display screens has been constantly changing. For example, when the light transmission medium is changed, the structure of the display screen will also be changed accordingly.

[0003] When the structure of a display screen changes, it is usually necessary to calibrate the screen to ensure that it can display information accurately. Summary of the Invention

[0004] This application provides a calibration method, apparatus, and terminal device for a display screen, which can solve the calibration problem of a display screen including an optical waveguide structure unit.

[0005] In a first aspect, embodiments of this application provide a calibration method for a display screen, applied to a display screen including multiple optical waveguide structure units, the calibration method for the display screen including:

[0006] The effects of deformation of the optical waveguide structure unit are detected, and the detection results are obtained.

[0007] The display screen is calibrated by selecting the corresponding calibration strategy based on the test results.

[0008] Secondly, embodiments of this application provide a calibration device for a display screen, applied to a display screen including multiple optical waveguide structure units, the calibration device for the display screen including:

[0009] The detection result determination module is used to detect the impact caused by the deformation of the optical waveguide structure unit and obtain the detection result;

[0010] The calibration module is used to select the corresponding calibration strategy to calibrate the display screen based on the detection results.

[0011] Thirdly, embodiments of this application provide a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method described in the first aspect.

[0012] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the method described in the first aspect.

[0013] Fifthly, embodiments of this application provide a computer program product that, when run on a terminal device, causes the terminal device to execute the method described in the first aspect above.

[0014] The beneficial effects of the embodiments in this application compared with the prior art are:

[0015] In this embodiment, the effect of deformation of the optical waveguide structure unit is detected to obtain the detection result. Since the display screen is calibrated according to the corresponding calibration strategy selected based on the above detection result, the selected calibration strategy is more closely matched with the effect of deformation of the optical waveguide structure unit, thereby improving the accuracy of calibration. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0017] Figure 1 This is a flowchart of a first display screen calibration method provided in an embodiment of this application;

[0018] Figure 2 This is a schematic diagram of a deformation-free optical waveguide structure unit provided in one embodiment of this application;

[0019] Figure 3 This is a schematic diagram of a deformable optical waveguide structure unit provided in one embodiment of this application;

[0020] Figure 4 This is a flowchart of a second display screen calibration method provided in an embodiment of this application;

[0021] Figure 5 This is a flowchart of a method for calibrating a display screen when light energy loss occurs, provided in another embodiment of this application;

[0022] Figure 6 This application provides a checkerboard pattern in one embodiment.

[0023] Figure 7 This is a flowchart of a method for calibrating a display screen when crosstalk occurs, provided in another embodiment of this application;

[0024] Figure 8 This is a structural block diagram of a display calibration device provided in an embodiment of this application;

[0025] Figure 9 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Detailed Implementation

[0026] In the following description, specific details such as particular system architectures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of this application. However, those skilled in the art will understand that this application may also be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods have been omitted so as not to obscure the description of this application with unnecessary detail.

[0027] It should be understood that, when used in this application specification and the appended claims, the term "comprising" indicates the presence of the described features, integrals, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or a collection thereof.

[0028] It should also be understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0029] References to "one embodiment" or "some embodiments" in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized.

[0030] Example 1:

[0031] During the manufacturing process, the optical waveguide structural unit may deform. Therefore, when a display screen includes an optical waveguide structural unit, if this deformation occurs, especially if the end face of the optical waveguide structural unit is not perpendicular to the cylindrical surface, it will cause image shift, thus affecting the display image observed by the user. However, attempting to resolve the deformation problem of the optical waveguide structural unit and thus the image shift issue by improving the manufacturing process is extremely difficult.

[0032] To address the problems caused by deformation of the optical waveguide structural unit when displaying information on a screen, this application provides a screen calibration method. In this calibration method, the impact of deformation of the optical waveguide structural unit is first determined, and then a corresponding calibration strategy is selected to calibrate the screen based on the detection results. That is, by adaptively selecting a corresponding calibration strategy based on the impact of deformation of the optical waveguide structural unit, the accuracy of the calibration is improved.

[0033] The calibration method for the display screen provided in the embodiments of this application will now be described with reference to the accompanying drawings.

[0034] Figure 1 A flowchart illustrating a first display screen calibration method provided in an embodiment of this application is shown below:

[0035] Step S11: Detect the impact caused by the deformation of the optical waveguide structure unit and obtain the detection results.

[0036] The display screen in this embodiment includes multiple optical waveguide structure units, such as... Figure 2 and Figure 3 As shown. Figure 2 The display screen includes pixels 21 composed of three sub-pixels (Red, Green, Blue, RGB), a black matrix (BM) 22, a hybrid layer (containing an upper glass, an upper polarizer, and a special adhesive (Optically Clear Adhesive, OCA) for bonding transparent optical elements) 23, and an optical waveguide structure 24. The optical waveguide structure 24 includes multiple optical waveguide structural units (each vertical line in the optical waveguide structure 24 corresponds to one optical waveguide structural unit). Figure 3 The display screen includes pixels 21, BM 22, hybrid layer 23, optical waveguide structure, and deformed optical waveguide structure units. Figure 2 (No deformable optical waveguide structure unit)25.

[0037] In this embodiment, the effects of deformation of the optical waveguide structure unit in the display screen can be detected using equipment such as a microscope. The effects of deformation of the optical waveguide structure unit include: affecting a single sub-pixel, and affecting multiple sub-pixels. For example, when one sub-pixel corresponds to multiple optical waveguide structure units, the effect of deformation of the optical waveguide structure unit is within one sub-pixel. That is, when the optical waveguide structure unit deforms, it will not cause crosstalk with other sub-pixels (not the sub-pixel corresponding to the deformed optical waveguide structure unit) and thus affect the display of information. When multiple sub-pixels correspond to one optical waveguide structure unit, the effect of deformation of the optical waveguide structure unit is between different sub-pixels. That is, when the optical waveguide structure unit deforms, crosstalk will occur between the multiple sub-pixels corresponding to the optical waveguide structure unit, thus affecting the display of information.

[0038] Step S12: Select the corresponding calibration strategy to calibrate the display screen based on the above test results.

[0039] In this embodiment, since the detection results reflect the effects caused by the deformation of the optical waveguide structure unit, selecting the corresponding calibration strategy to calibrate the display screen based on the detection results is equivalent to making corresponding adjustments to the display screen based on the deformation of the optical waveguide structure unit.

[0040] In this embodiment, the effect of deformation of the optical waveguide structure unit is detected to obtain the detection result. Since the display screen is calibrated according to the corresponding calibration strategy selected based on the above detection result, the selected calibration strategy is more closely matched with the effect of deformation of the optical waveguide structure unit, thereby improving the accuracy of calibration.

[0041] Figure 4 A flowchart of a second display screen calibration method provided in this application embodiment is shown. In this embodiment, the display screen is calibrated for cases where the effect of deformation of the optical waveguide structure unit is within one sub-pixel. Step S41 is the same as step S11 and will not be repeated here. Steps S42 and S43 are refinements of step S12, detailed below:

[0042] Step S41: Detect the effect caused by the deformation of the optical waveguide structure unit and obtain the detection result.

[0043] Step S42: If the above detection result indicates that the effect caused by the deformation of the above optical waveguide structure unit is within a sub-pixel, then determine the brightness value of the sub-pixel before and after the brightness is conducted in the display screen.

[0044] Since the optical waveguide structure unit is used to transmit information (such as brightness) from the sub-pixel units (hereinafter referred to as sub-pixels) in the display screen from the bottom of the display screen to the surface of the display screen, if the optical waveguide structure unit is deformed, the information of the transmitted sub-pixel will also be deformed after transmission. Specifically, when the effect of the deformation of the optical waveguide structure unit is within a sub-pixel (for example, if a sub-pixel corresponds to one or more optical waveguide structure units, if a certain optical waveguide structure unit is deformed, it will only affect its corresponding sub-pixel), light energy loss will occur, that is, the brightness of the sub-pixel will decrease after being transmitted by the deformed optical waveguide structure unit.

[0045] In this embodiment, the brightness value of the sub-pixel before the brightness is transmitted and the brightness value of the sub-pixel after the brightness is transmitted are determined to obtain the brightness value of the sub-pixel before and after deformation.

[0046] Step S43: The display screen is calibrated based on the brightness values ​​of the sub-pixels before and after the brightness is transmitted.

[0047] Specifically, for a sub-pixel corresponding to a deformed optical waveguide structure unit, since the brightness of the sub-pixel is an undeformed brightness value before it is transmitted, and a deformed brightness value after it is transmitted, the light energy loss of the sub-pixel can be known based on the brightness value before and after the brightness of the sub-pixel is transmitted, and the display screen can be calibrated based on the light energy loss of the sub-pixel.

[0048] In this embodiment of the application, since the analysis shows that when the effect of the deformation of the optical waveguide structure unit occurs within a sub-pixel, only the loss of light energy will occur, that is, only the brightness value of the sub-pixel will be affected. Therefore, in this deformation case, the display screen is calibrated based on the brightness value of the sub-pixel before and after the brightness is conducted, which can improve the accuracy of the calibration.

[0049] In some embodiments, determining the brightness values ​​of the sub-pixels in the display screen before and after the brightness is transmitted in step S42 above includes:

[0050] A1. Obtain the brightness value of the first information, which is the brightness value of the sub-pixel in the above display screen before it is transmitted. The first information is the information that the user wants to see.

[0051] The brightness value of the first information includes the brightness values ​​of each position that makes up the first information, and each position corresponds to a sub-pixel of the display screen. Specifically, the brightness values ​​of each position in the first information can be obtained from the device that generates the first information, or the brightness values ​​of each position in the first information can be obtained from the brightness information carried in the first information itself.

[0052] Specifically, assuming the user wants to see the first information, the display screen, after acquiring the first information, can obtain the brightness values ​​of each position within that first information. Each sub-pixel unit (hereinafter also referred to as a sub-pixel) within the display screen will set its brightness value according to the brightness values ​​of each position in the acquired first information (for example, setting them to equal brightness values). Then, through multiple optical waveguide structure units within the display screen, the brightness of each sub-pixel unit in the display screen is transmitted from the bottom of the display screen to the surface of the display screen. The resulting brightness values ​​are the brightness values ​​of each position in the subsequent second information.

[0053] A2. Obtain the brightness value of the second information as the brightness value of the sub-pixel in the above display screen after it is transmitted. The second information is the information obtained by the optical waveguide structure unit after transmitting the first information from the bottom of the above display screen to the surface of the above display screen.

[0054] A3. Compare the brightness value of the first information and the brightness value of the second information to obtain the position information of the brightness distortion in the first information. The sub-pixel corresponding to the position information of the brightness distortion on the display screen is the first target sub-pixel.

[0055] The first target sub-pixel is the sub-pixel that is deformed after the brightness is transmitted.

[0056] In this embodiment, the brightness value at a certain position in the first information is compared with the brightness value at the corresponding position in the second information. When the two brightness values ​​are different, it indicates that the brightness of the sub-pixel corresponding to that position on the display screen is distorted after being conducted. In this embodiment, for ease of explanation, the sub-pixel corresponding to the distorted brightness after being conducted on the display screen is named the first target sub-pixel.

[0057] A4. Determine the brightness values ​​of the first target sub-pixel before and after its brightness is transmitted, based on the above.

[0058] Since only some of the optical waveguide structural units in the display screen may be deformed, and the calibration strategies that can be selected are different depending on whether some optical waveguide structural units are deformed or all optical waveguide structural units are deformed, the above A1 to A4 first determine the sub-pixels whose brightness is deformed after being conducted, which is beneficial to improve the accuracy of subsequent calibration of the display screen.

[0059] In some embodiments, when the effect caused by the deformation of the optical waveguide structure unit is within a sub-pixel, it only leads to the loss of light energy in that sub-pixel, that is, it only leads to a decrease in the brightness of the information displayed on the display screen at the position corresponding to that sub-pixel. In this case, step S43 above includes:

[0060] B1. Adjust the brightness of the sub-pixels of the display screen according to the brightness values ​​of the sub-pixels before and after the brightness is transmitted, so as to calibrate the display screen.

[0061] In this embodiment, considering that the purpose of adjusting the brightness of the sub-pixels is to make the brightness of the information displayed on the display screen more balanced, the above purpose can be achieved by increasing the brightness of the first target sub-pixel while maintaining the brightness of the sub-pixels on the display screen that are not the first target sub-pixels, or by decreasing the brightness of the sub-pixels on the display screen that are not the first target sub-pixels while maintaining the brightness of the first target sub-pixel, or by increasing the brightness of the first target sub-pixel while decreasing the brightness of the sub-pixels on the display screen that are not the first target sub-pixels.

[0062] Specifically, such as Figure 5As shown, the brightness value of each sub-pixel before its brightness is transmitted is compared with the brightness value of the sub-pixel after its brightness is transmitted (i.e., the brightness value obtained after the brightness is transmitted through the optical waveguide structure unit) to obtain a brightness difference value. It is determined whether this brightness difference value is within a preset brightness difference threshold range. If it is within the preset brightness difference threshold range, the brightness of each sub-pixel on the display screen is determined to meet the requirements. In this case, there is no need to adjust the brightness displayed by each sub-pixel. Otherwise, the brightness of the first target sub-pixel is increased and / or the brightness of the sub-pixels on the display screen that are not the first target sub-pixel is decreased (the sub-pixels that are not the first target sub-pixel on the display screen can be all sub-pixels on the display screen that are not the first target sub-pixel, or sub-pixels on the display screen that are not the first target sub-pixel but are adjacent to the first target sub-pixel). Afterwards, the process returns to the step of comparing the brightness value of each sub-pixel before its brightness is transmitted with the brightness value of the sub-pixel after its brightness is transmitted, and subsequent steps are executed. It should be noted that when the brightness value of a sub-pixel is adjusted and the resulting brightness difference value is within the preset brightness difference threshold range, the brightness value corresponding to the sub-pixel whose brightness value has been adjusted is recorded on the display screen. Alternatively, the brightness value corresponding to each sub-pixel on the display screen is recorded so that the sub-pixels can be set accordingly based on the recorded brightness values ​​later.

[0063] or,

[0064] B2. Adjust the backlight brightness of the display screen according to the brightness values ​​of the sub-pixels before and after the brightness is conducted, so as to calibrate the display screen.

[0065] In this embodiment, considering that the brightness of the information displayed on the screen varies depending on the brightness of the backlight, the brightness of the information displayed on the screen can be adjusted to achieve a more balanced brightness. For example, this can be achieved by increasing the brightness of the backlight corresponding to the first target sub-pixel while maintaining the brightness of the backlight corresponding to sub-pixels that are not the first target sub-pixel; or by decreasing the brightness of the backlight corresponding to sub-pixels that are not the first target sub-pixel while maintaining the brightness of the backlight corresponding to the first target sub-pixel; or by increasing the brightness of the backlight corresponding to the first target sub-pixel while decreasing the brightness of the backlight corresponding to sub-pixels that are not the first target sub-pixel.

[0066] In some scenarios, when multiple sub-pixels correspond to one optical waveguide structure unit, deformation of one optical waveguide structure unit will cause crosstalk between its corresponding multiple sub-pixels. Crosstalk will cause blurring or the formation of uneven edges at the boundaries of interfaces displaying different colors. In this case, step S12 above includes:

[0067] C1. If the above detection results indicate that the effect caused by the deformed optical waveguide structure unit is between different sub-pixels, then a second target sub-pixel is determined, and the second target sub-pixel is the sub-pixel in the display screen that is affected.

[0068] In this embodiment, the deformation of the optical waveguide structure unit in the display screen can be detected using equipment such as a microscope to determine the corresponding second target sub-pixel. Alternatively, the information that the display screen will display (assumed to be the first information) and the information that the display screen actually displays (assumed to be the second information) can be obtained first, and then the first information and the second information can be compared to determine the second target sub-pixel.

[0069] C2. Adjust the display mode of the second target sub-pixel to calibrate the display screen.

[0070] In this embodiment, considering that the deformation of the optical waveguide structure unit is fixed relative to the screen position, the calibration can be performed only on the area where crosstalk occurs. That is, by adjusting the display mode of the sub-pixels in the area where crosstalk occurs (or the deformed area), the accurate calibration of the display screen can be achieved.

[0071] In some embodiments, determining the second target sub-pixel in step C1 above includes:

[0072] D1. Obtain the color value of the first information, which is the information the user wants to see.

[0073] In this embodiment, the color values ​​of the first information at each position are obtained. Each position corresponds to a sub-pixel on the display screen, that is, the color value at that position is represented by the color value of the corresponding sub-pixel on the display screen.

[0074] D2. Obtain the color value of the second information, which is the information obtained by the optical waveguide structure unit after transmitting the first information from the bottom of the display screen to the surface of the display screen.

[0075] D3. Compare the color value of the first information and the color value of the second information to obtain the location information of the color value distortion in the first information. The sub-pixel corresponding to the location information of the color value distortion on the display screen is the second target sub-pixel.

[0076] In this embodiment, the corner points of the second information can be determined by comparing the color values ​​of each position in the first information and the color values ​​of each position in the second information. Then, the corner points of the first information are compared with the corner points of the second information to obtain the distorted corner points. The sub-pixels corresponding to these distorted corner points are the second target sub-pixels. Since there is usually a difference between the color values ​​of the first information and the second information at corresponding positions when there is crosstalk between sub-pixels, the second target sub-pixels can be accurately determined by comparing their color values.

[0077] In some embodiments, when determining a distorted corner point, the degree of distortion is also determined. Specifically, the degree of distortion of the corner point is determined based on its position information in the first information and its position information in the second information. For example, if the position information of the corner point in the first information is far from its position information in the second information, it indicates that the degree of distortion of the corner point is higher; otherwise, it indicates that the degree of distortion of the corner point is lower.

[0078] Correspondingly, step C2 above includes:

[0079] If the degree of distortion is not within the preset distortion threshold range, the display mode of the second target sub-pixel is adjusted to calibrate the display screen.

[0080] In some embodiments, such as Figure 6 As shown, the first piece of information mentioned above is the image corresponding to the checkerboard pattern. Since corner points are easier to distinguish in the image of the checkerboard pattern, using the image corresponding to the checkerboard pattern as the first piece of information can more accurately and quickly determine the second target sub-pixel.

[0081] In some embodiments, step C2 above includes:

[0082] C21. The second target sub-pixel in the aforementioned display screen is turned off. Since the second target sub-pixel is turned off, it does not contain colors that would cause crosstalk with other sub-pixels, thus achieving display screen calibration. Further, to reduce the amount of lost information, the color value of the information to be displayed on the display screen is first obtained. Based on the color value, the grayscale value corresponding to each sub-pixel in the display screen is determined. If the color of a pixel adjacent to the second target sub-pixel is the same as the type of the second target sub-pixel, then the second target sub-pixel is turned on; otherwise, the second target sub-pixel is turned off. (Reference) Figure 3 If the pixel adjacent to the green (G) sub-pixel in the dotted frame is green, then the second target sub-pixel is enabled; otherwise, the second target sub-pixel is disabled to prevent it from affecting the normal display of the adjacent pixels.

[0083] or,

[0084] C21' Obtain the color value of the information to be displayed on the display screen, determine the gray value corresponding to each sub-pixel in the display screen based on the color value, determine the sub-pixel of the same type as the second target sub-pixel from the sub-pixels around the second target sub-pixel, and replace the gray value of the second target sub-pixel with the determined gray value on the display screen.

[0085] refer to Figure 3 In a dotted frame, three sub-pixels form a single pixel. If the rightmost sub-pixel in the dotted frame is of type G, then the grayscale value of the rightmost G-type sub-pixel in the dotted frame is replaced by the grayscale value of the G-type sub-pixel in the pixel adjacent to it on the left, and displayed on the screen. Since the replaced sub-pixel is closest to the replaced sub-pixel, distortion of the displayed information can be reduced.

[0086] To more clearly describe the solution for calibrating the display screen when crosstalk occurs, the following section combines... Figure 7 Please provide an explanation.

[0087] exist Figure 7 In this process, a checkerboard image is acquired after the light passes through the optical waveguide structure unit. Specifically, a high-precision camera can be used to photograph the screen of the display screen covering the optical waveguide structure unit to obtain the checkerboard image after the light passes through the optical waveguide structure unit.

[0088] By comparing the two checkerboard images before and after the optical waveguide structure unit, the coordinates of the checkerboard corner points are determined.

[0089] By comparing the coordinates of the corner points of each chessboard square, we can determine the abnormal coordinates and the degree of distortion.

[0090] During the initial assessment, if the distortion level is determined to be within an acceptable range (i.e., within the preset distortion threshold range), the calibration mode is exited.

[0091] During the initial assessment, if the distortion level is determined to be outside the acceptable range, the sub-pixel is enabled based on the colors of surrounding pixels at the abnormal coordinates. For example, if the colors of surrounding pixels match the type of the sub-pixel corresponding to the abnormal coordinate, the sub-pixel is enabled; otherwise, it is disabled. Alternatively, the grayscale value of the sub-pixel corresponding to the abnormal coordinate is replaced by the grayscale value of a neighboring sub-pixel. After adjusting the sub-pixel display method, the new distortion level is calculated, and it is determined whether the new distortion level is within the acceptable range. If so, the current display parameters are recorded, such as information about the sub-pixels whose values ​​have been adjusted, including whether the sub-pixel is enabled or disabled, and which sub-pixel's grayscale value replaced the original sub-pixel's grayscale value.

[0092] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0093] Example 2:

[0094] Corresponding to the display calibration method described in the above embodiments, Figure 8 This diagram illustrates a structural block diagram of a display calibration device according to an embodiment of this application. For ease of explanation, only the parts relevant to the embodiment of this application are shown.

[0095] Reference Figure 8 The calibration device 8 for the display screen is applied to a display screen including multiple optical waveguide structural units. The calibration device 8 includes a detection result determination module 81 and a calibration module 82. Wherein:

[0096] The detection result determination module 81 is used to detect the effects caused by the deformation of the optical waveguide structure unit and obtain the detection result.

[0097] The calibration module 82 is used to select the corresponding calibration strategy to calibrate the display screen based on the detection results.

[0098] In this embodiment, the effect of deformation of the optical waveguide structure unit is detected to obtain the detection result. Since the display screen is calibrated according to the corresponding calibration strategy selected based on the above detection result, the selected calibration strategy is more closely matched with the effect of deformation of the optical waveguide structure unit, thereby improving the accuracy of calibration.

[0099] In some embodiments, the calibration module 82 includes:

[0100] The brightness value determination unit before and after brightness conduction is used to determine the brightness value of the sub-pixel in the display screen before and after brightness conduction if the detection result indicates that the effect caused by the deformed optical waveguide structure unit is within a sub-pixel.

[0101] The brightness value calibration unit is used to calibrate the display screen based on the brightness values ​​of the sub-pixels before and after the brightness is transmitted.

[0102] In some embodiments, the brightness value determination unit before and after brightness conduction is specifically used to determine the brightness values ​​of sub-pixels in the display screen before and after brightness conduction when determining the brightness values ​​of sub-pixels in the display screen before and after brightness conduction:

[0103] The brightness value of the first information is obtained as the brightness value of the sub-pixel in the display screen before it is transmitted. The first information is the information that the user wants to see.

[0104] The brightness value of the second information is obtained as the brightness value of the sub-pixel in the display screen after it has been transmitted. The second information is the information obtained by the optical waveguide structure unit after transmitting the first information from the bottom of the display screen to the surface of the display screen.

[0105] The brightness values ​​of the first information and the second information are compared to obtain the location information of the brightness distortion in the first information. The sub-pixel corresponding to the location information of the brightness distortion on the display screen is the first target sub-pixel.

[0106] The brightness values ​​of the target sub-pixel before and after its brightness is transmitted are determined based on the first target sub-pixel.

[0107] In some embodiments, the calibration unit based on brightness value is specifically used for:

[0108] The brightness values ​​of the sub-pixels of the display screen are adjusted based on the brightness values ​​of the sub-pixels before and after the brightness is transmitted, so as to calibrate the display screen.

[0109] or,

[0110] The brightness value of the backlight of the display screen is adjusted according to the brightness value of the sub-pixel before and after the brightness is conducted, so as to calibrate the display screen.

[0111] In some embodiments, the calibration module 82 includes:

[0112] The second target sub-pixel determination unit is used to determine a second target sub-pixel if the detection result indicates that the effect caused by the deformed optical waveguide structure unit is among different sub-pixels. The second target sub-pixel is the sub-pixel in the display screen that is affected.

[0113] The display mode adjustment unit is used to adjust the display mode of the second target sub-pixel in order to calibrate the display screen.

[0114] In some embodiments, when determining the second target sub-pixel, the second target sub-pixel determining unit is specifically used for:

[0115] Obtain the color value of the first piece of information, which is the information the user wants to see.

[0116] The color value of the second information is obtained, which is the information obtained after the optical waveguide structure unit transmits the first information from the bottom of the display screen to the surface of the display screen.

[0117] The color values ​​of the first information and the second information are compared to obtain the location information of the color value distortion in the first information. The sub-pixel corresponding to the location information of the color value distortion on the display screen is the second target sub-pixel.

[0118] In some embodiments, the display mode adjustment unit is specifically used for:

[0119] Turn off the second target sub-pixel in the display screen.

[0120] or,

[0121] Obtain the color value of the information to be displayed on the display screen, determine the gray value corresponding to each sub-pixel in the display screen based on the color value, and if there is a sub-pixel of the same type as the second target sub-pixel among the sub-pixels around the second target sub-pixel, then use the gray value of the existing sub-pixel to replace the gray value of the second target sub-pixel in the display screen.

[0122] It should be noted that the information interaction and execution process between the above-mentioned devices / units are based on the same concept as the method embodiments of this application. For details on their specific functions and technical effects, please refer to the method embodiments section, and they will not be repeated here.

[0123] Example 3:

[0124] Figure 9 This is a schematic diagram of the structure of a terminal device provided in an embodiment of this application. Figure 9 As shown, the terminal device 9 of this embodiment includes: at least one processor 90 ( Figure 9 The diagram shows only one processor, a memory 91, and a computer program 92 stored in the memory 91 and executable on the at least one processor 90, wherein the processor 90 executes the computer program 92 to implement the steps in any of the above method embodiments.

[0125] The terminal device 9 can be a desktop computer, laptop, handheld computer, or cloud server, etc., with a display screen having an optical waveguide structure unit. This terminal device may include, but is not limited to, a processor 90 and a memory 91. Those skilled in the art will understand that... Figure 9 This is merely an example of terminal device 9 and does not constitute a limitation on terminal device 9. It may include more or fewer components than shown in the figure, or combine certain components, or different components, such as input / output devices, network access devices, etc.

[0126] The processor 90 may be a Central Processing Unit (CPU), or it may be other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0127] In some embodiments, the memory 91 may be an internal storage unit of the terminal device 9, such as a hard disk or memory of the terminal device 9. In other embodiments, the memory 91 may be an external storage device of the terminal device 9, such as a plug-in hard disk, smart media card (SMC), secure digital card (SD), flash card, etc., equipped on the terminal device 9. Furthermore, the memory 91 may include both internal and external storage units of the terminal device 9. The memory 91 is used to store the operating system, applications, bootloader, data, and other programs, such as the program code of the computer program. The memory 91 can also be used to temporarily store data that has been output or will be output.

[0128] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0129] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps described in the various method embodiments above.

[0130] This application provides a computer program product that, when run on a terminal device, enables the terminal device to implement the steps described in the above-described method embodiments.

[0131] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments of this application can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a photographing device / terminal device, a recording medium, a computer memory, a read-only memory (ROM), a random access memory (RAM), an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks. In some jurisdictions, according to legislation and patent practice, computer-readable media cannot be electrical carrier signals or telecommunication signals.

[0132] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0133] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0134] In the embodiments provided in this application, it should be understood that the disclosed apparatus / network devices and methods can be implemented in other ways. For example, the apparatus / network device embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0135] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0136] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A method for calibrating a display screen, characterized in that, A calibration method for a display screen comprising multiple optical waveguide structural units includes: The effects of deformation of the optical waveguide structure unit are detected to obtain detection results. The effects of deformation of the optical waveguide structure unit include: affecting a single sub-pixel, and affecting multiple sub-pixels. Affecting a single sub-pixel means that when one sub-pixel corresponds to multiple optical waveguide structure units, the effects of deformation of the optical waveguide structure unit are within one sub-pixel. Affecting multiple sub-pixels means that when multiple sub-pixels correspond to one optical waveguide structure unit, the effects of deformation of the optical waveguide structure unit are distributed among different sub-pixels. The display screen is calibrated by selecting the corresponding calibration strategy based on the test results. The step of selecting a corresponding calibration strategy to calibrate the display screen based on the detection results includes: If the detection result indicates that the effect caused by the deformed optical waveguide structure unit is within a sub-pixel, then the brightness value of the sub-pixel in the display screen before and after the brightness is conducted is determined. The display screen is calibrated based on the brightness values ​​of the sub-pixels before and after the brightness is transmitted; If the detection result indicates that the effect caused by the deformed optical waveguide structure unit is between different sub-pixels, then a second target sub-pixel is determined, and the second target sub-pixel is the sub-pixel in the display screen that is affected; The display mode of the second target sub-pixel is adjusted to calibrate the display screen.

2. The display screen calibration method as described in claim 1, wherein determining the brightness values ​​of the sub-pixels in the display screen before and after the brightness is conducted includes: The brightness value of the first information is obtained as the brightness value of the sub-pixel in the display screen before it is transmitted. The first information is the information that the user wants to see. The brightness value of the second information is obtained as the brightness value of the sub-pixel in the display screen after it has been transmitted. The second information is the information obtained by the optical waveguide structure unit after transmitting the first information from the bottom of the display screen to the surface of the display screen. The brightness values ​​of the first information and the second information are compared to obtain the location information of the brightness distortion in the first information. The sub-pixel corresponding to the location information of the brightness distortion on the display screen is the first target sub-pixel. The brightness values ​​of the target sub-pixel before and after its brightness is transmitted are determined based on the first target sub-pixel.

3. The display screen calibration method as described in claim 1 or 2, wherein calibrating the display screen based on the brightness values ​​of the sub-pixels before and after brightness conduction includes: The brightness values ​​of the sub-pixels of the display screen are adjusted according to the brightness values ​​of the sub-pixels before and after the brightness is conducted, so as to calibrate the display screen. or, The brightness value of the backlight of the display screen is adjusted according to the brightness value of the sub-pixel before and after the brightness is conducted, so as to calibrate the display screen.

4. The display screen calibration method as described in claim 1, characterized in that, Determining the second target sub-pixel includes: Obtain the color value of the first piece of information, which is the information the user wants to see; The color value of the second information is obtained, which is the information obtained after the optical waveguide structure unit transmits the first information from the bottom of the display screen to the surface of the display screen; The color values ​​of the first information and the second information are compared to obtain the location information of the color value distortion in the first information. The sub-pixel corresponding to the location information of the color value distortion on the display screen is the second target sub-pixel.

5. The display calibration method as described in claim 1 or 4, characterized in that, Adjusting the display mode of the second target sub-pixel includes: Turn off the second target sub-pixel in the display screen; or, Obtain the color value of the information to be displayed on the display screen, determine the gray value corresponding to each sub-pixel in the display screen based on the color value, and if there is a sub-pixel of the same type as the second target sub-pixel among the sub-pixels around the second target sub-pixel, then use the gray value of the existing sub-pixel to replace the gray value of the second target sub-pixel in the display screen.

6. A calibration device for a display screen, characterized in that, A calibration device for a display screen comprising multiple optical waveguide structural units includes: The detection result determination module is used to detect the impact caused by the deformation of the optical waveguide structure unit and obtain the detection result. The impact caused by the deformation of the optical waveguide structure unit includes: impacting a single sub-pixel and impacting multiple sub-pixels. Impacting a single sub-pixel means that when one sub-pixel corresponds to multiple optical waveguide structure units, the impact caused by the deformation of the optical waveguide structure unit is within one sub-pixel. Impacting multiple sub-pixels means that when multiple sub-pixels correspond to one optical waveguide structure unit, the impact caused by the deformation of the optical waveguide structure unit is distributed among different sub-pixels. The calibration module is used to select a corresponding calibration strategy to calibrate the display screen based on the detection results; The calibration module includes: The brightness value determination unit before and after brightness conduction is used to determine the brightness value of the sub-pixel in the display screen before and after brightness conduction if the detection result indicates that the effect caused by the deformed optical waveguide structure unit is within a sub-pixel. The brightness value calibration unit is used to calibrate the display screen based on the brightness values ​​of the sub-pixels before and after the brightness is conducted. The second target sub-pixel determination unit is used to determine a second target sub-pixel if the detection result indicates that the effect caused by the deformed optical waveguide structure unit is among different sub-pixels. The second target sub-pixel is the sub-pixel in the display screen that is affected. The display mode adjustment unit is used to adjust the display mode of the second target sub-pixel in order to calibrate the display screen.

7. A terminal device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the method as described in any one of claims 1 to 5.

8. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it implements the method as described in any one of claims 1 to 5.

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