WO2017028518A1

WO2017028518A1 - Method and device for eliminating ghost, and display

Info

Publication number: WO2017028518A1
Application number: PCT/CN2016/074381
Authority: WO
Inventors: 路林; 曹建伟
Original assignee: 青岛海信电器股份有限公司
Priority date: 2015-08-18
Filing date: 2016-02-23
Publication date: 2017-02-23
Also published as: CN105096829A; CN105096829B

Abstract

A method and a device for eliminating ghost, and a display. The method comprises: in the process of displaying video images, detecting, at every interval of P frames, sub-pixels for the duration of one frame to obtain aging information of the sub-pixels, P being a positive integer greater than 1 (101); acquiring compensation information of the sub-pixels according to the aging information (102); and compensating the sub-pixels according to the compensation information so as to reduce the grayscale attenuation of the sub-pixels (103). By detecting that, in the process of displaying video images, the sub-pixels for the duration of one frame until the aging information of all the sub-pixels has been acquired, such that the device for eliminating ghost can, at the time of displaying the frame corresponding to a video image, obtain the compensation information by means of computation and perform a compensation operation, it is possible to avoid the situation where standby is required in order to eliminate ghost.

Description

Description: The method, device, and display for eliminating image sticking

[0001] Cross-Reference to Related Applications

[0002] The present application claims priority to Chinese Patent Application No. 201510511558.0, entitled "Method, Apparatus and Display for Eliminating Image Residue", filed on August 18, 2015, the entire contents of which are hereby incorporated by reference. Combined in this application.

Technical field

The present invention relates to liquid crystal display technology, and more particularly to a method, device and display for eliminating image sticking.

Background technique

[0004] Currently, an OLED (Organic Light-Emitting Diode) is capable of self-illuminating display, fast response, wide viewing angle, can be curled, folded, or as a part of a wearable computer. There are a wide range of applications in special fields such as portable products and military. OLED display technology differs from traditional LCD display methods in that it does not require a backlight, but uses a very thin organic material coating and a glass substrate that emits light when current is passed through the crucible.

[0005] In an OLED display, for the same type of sub-pixels, there may be a difference in luminance between each sub-pixel, that is, in the display process, the brightness of each sub-pixel is different, and the driving current voltage required for each sub-pixel is different. The higher the brightness of the sub-pixels, the larger the driving current is required, so the heating temperature of each sub-pixel is different. As the working time increases, each sub-pixel has an unrecoverable aging phenomenon, for example, a driving TFT in a sub-pixel. (Thin Film Transistor, thin film transistor) The threshold voltage will drift, so that after displaying a period of time, the brightness of each sub-pixel has a certain attenuation, but the degree of attenuation is different, and the gray level of the sub-pixel with higher brightness The faster the decay. For example, an image frame has two red sub-pixels with grayscale values of 255 and 150 respectively. After a period of time, the grayscale values are 200 and 125, respectively, that is, the grayscale attenuation of the red subpixel whose grayscale value is originally 255. The gray scale is 50 gray scale, and the gray scale of the red sub-pixel whose original gray scale value is 150 is attenuated by 25 gray scales, and the brightness attenuation difference between the two red sub-pixels is large. In this way, after the image is displayed between the long screens of the OLED display, if the screen is switched, the image of the original image will appear after the switching, which will affect the display effect of the OLED display.

[0006] In the prior art, the residual image is generally eliminated by compensation, and the specific method is: every preset time, reminder The user currently needs to compensate the pixels, and needs to perform standby and perform background compensation operation. The background operation process is: After the OLED display is in standby, the driving chip in the OLED display switches to the compensation mode, that is, the sub-pixels in the OLED display do not work. In the case of scanning the sub-pixels progressively, the aging information of each sub-pixel is obtained by using the detection line, for example, the threshold drift information of the driving TFT, and then the driving voltage of each sub-pixel is adjusted, and the current of each sub-pixel is adjusted to each sub-pixel. The raw current of the pixel, which is, for example, the average of the currents of the sub-pixels operating before the compensation mode. However, every predetermined time, the user needs to stand by to implement the operation of eliminating the residual image, which brings great inconvenience to the user.

technical problem

The present invention provides a method, an apparatus, and a display for eliminating image sticking to solve the defect in the prior art and the like that the standby operation is required to be performed.

Problem solution

Technical solution

A first aspect of the present invention provides a method for eliminating afterimages, including:

[0009] In the image display process, each sub-P frame occupies 1 frame to detect sub-pixels, and obtains aging information of the sub-pixel, where P is a positive integer greater than 1.

[0010] acquiring compensation information of the sub-pixel according to the aging information;

[0011] compensating the sub-pixel according to the compensation information to reduce gray scale attenuation of the sub-pixel.

[0012] Another aspect of the present invention provides an apparatus for eliminating image sticking, including:

[0013] a detecting module, configured to detect, in an image frame display process, a sub-pixel for every one frame interval, to obtain aging information of the sub-pixel, where P is a positive integer greater than one;

[0014] an obtaining module, configured to acquire compensation information of the sub-pixel according to the aging information;

[0015] a compensation module, configured to compensate the sub-pixel according to the compensation information to reduce grayscale attenuation of the sub-pixel.

[0016] Still another aspect of the present invention provides a display comprising any of the above-described devices for eliminating image sticking.

Advantageous effects of the invention

Beneficial effect

[0017] According to the foregoing technical solution, the method, device, and display for eliminating image sticking provided by the present invention detect a sub-pixel by occupying one frame during image image display, until all sub-pixels are acquired. The aging information is displayed on the corresponding frame of the image frame, and the device for eliminating the residual image can obtain the compensation information and perform the compensation operation through calculation, thereby avoiding the need for the user to stand by to eliminate the residual image, affecting the customer experience, and achieving the afterimage. Elimination.

Brief description of the drawing

DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below, and obviously, in the following description The drawings are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

1 is a schematic flow chart of a method for eliminating afterimages according to an embodiment of the invention;

2 is a schematic structural diagram of an apparatus for eliminating image sticking according to another embodiment of the present invention;

3 is a schematic structural diagram of an apparatus for eliminating image sticking according to still another embodiment of the present invention;

4 is a schematic structural diagram of an apparatus for eliminating image sticking according to still another embodiment of the present invention.

Embodiments of the invention

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. The embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

[0024] The brightness of the image is determined by the gray scale. The following first introduces the concept of gray scale: Usually, the display device sees a point on the image that is composed of three sub-pixels of red, green and blue. One sub-pixel can display different brightness levels, and the gray level represents different levels of brightness from the brightest to the darkest. The more layers, the finer the picture is. For example, 256 luminance levels are referred to as 256 gray levels, and the color change of a point on the image represents the change in the gray level of the three sub-pixels constituting the point.

[0025] Image screen: including dynamic picture and static picture, static picture: composed of a plurality of consecutive identical frames.

In general, the static picture will last for 1-2 seconds. Since there may be hundreds of frames in 1 second, hundreds of frames can be included in the still picture. A dynamic picture consists of several different frames. [0026] Frame: A single image frame of the smallest unit in an image animation. One frame is a still picture.

[0027] Embodiment 1

[0028] This embodiment provides a method for eliminating image sticking, which is used to eliminate image sticking in a display, in particular, to eliminate image sticking in a 0 LED display. As shown in Fig. 1, a flow chart of a method of eliminating image sticking according to the present embodiment is shown. The method for eliminating image sticking in this embodiment includes:

[0029] Step 101: During the image frame display process, the sub-pixels are detected by occupying 1 frame every P frame, and the aging information of the sub-pixels is obtained.

Wherein P is a positive integer greater than 1, and preferably, P is an integer greater than or equal to 3.

[0031] The image frame of this embodiment includes a dynamic picture and a static picture. Since only one frame is used for detection in this embodiment, the user hardly perceives the discontinuity of the frame that affects the picture, and the pause of the image picture is not perceived, especially if the operation process of the embodiment is in a static picture. Under the condition that the two frames before and after the detection are the same, it can be said that the user's sense is not affected at all, and the user does not perceive the discontinuity of the image frame.

For example, whether the grayscale value of each pixel corresponding to the current frame is the same as the previous frame, and if the comparison result is the same, it is determined that the current display screen is a static screen. That is, if the gray levels of all the sub-pixels in the previous frame are equal to the gray levels of all the sub-pixels in the subsequent frame, it means that the previous frame is the same as the picture of the next frame, and is a static picture. Specifically, how to obtain the gray level of each pixel can be obtained by acquiring the driving voltage of the pixel, which belongs to the prior art and will not be described in detail.

[0033] The detection time of the embodiment cannot be too long, so that the user who is watching the display perceives that the picture is not continuous, thereby avoiding affecting the user experience, so the detection time is set to occupy 1 frame of time. Assuming that the user detects that one line of a sub-pixel in the display is one frame, one line of sub-pixels is detected each time. Thus, by detecting one line every P frame, all sub-pixels can be detected.

[0034] P can be selected according to actual needs. For example, the P frame may be used to calculate the time of acquiring the compensation information of the detected 1 line of sub-pixels. That is, the operation of calculating the compensation information of the sub-pixels can be performed simultaneously with the display of the image screen, and the operation does not affect the display of the image screen. Of course, P can be set according to actual needs.

, will not repeat them here.

[0035] The aging information of the embodiment may be the current information of the currently detected sub-pixel, or the ideal current of the sub-pixel corresponding to the driving voltage of the detected sub-pixel and the actual power of the detected sub-pixel. The difference between the flows, etc., can be set according to actual needs, and will not be described here.

[0036] wherein, the pixels of the OLED display comprise four sub-pixels, respectively red sub-pixels, green sub-pixels

, blue subpixels, and white subpixels.

[0037] In addition, if the detection process is not completed during the display of the still picture, it may be selected to continue the detection during the display of the next still picture.

[0038] Step 102: Acquire compensation information of the sub-pixel according to the aging information.

[0039] For example, if the aging information is the current information of the sub-pixel, the device for eliminating the residual image may acquire the compensation voltage of the sub-pixel at the preset voltage according to the detection current, and the compensation voltage is the compensation information. This step belongs to the prior art and will not be described here.

[0040] It should be noted that the operation of step 102 can be performed in the same manner as the operation of step 101. That is, when step 101 has been performed, the device for eliminating image sticking can be calculated according to the obtained aging information of the sub-pixel. Subpixel compensation information.

[0041] Step 103: Compensate the sub-pixel according to the compensation information to reduce gray scale attenuation of the sub-pixel.

[0042] For example, adjusting the driving voltage of the sub-pixel to make the actual current of the sub-pixel reach the initial current, the adjusted driving voltage is equal to the sum of the compensation voltage and the preset voltage, and the initial current is the sub-pixel is not aged and is at the preset voltage. Current. This step belongs to the prior art and will not be described here.

[0043] It should be noted that, under ideal conditions, the adjusted driving voltage is equal to the sum of the compensation voltage and the preset voltage, but in actual operation, there are always various errors, so that the driving voltage cannot completely reach the preset. The voltage, in turn, causes the actual current of the sub-pixel to have a certain difference from the initial current. Therefore, as long as the difference is within the allowable range, the actual current can be regarded as equal to the initial current, and the gray-scale attenuation of the sub-pixel can be reduced. .

[0044] Compared with the prior art, the method for eliminating image sticking in this embodiment detects a sub-pixel by occupying 1 frame in a static picture display process, until obtaining aging information of all sub-pixels, and further The frame corresponding to the picture is displayed, and the device for eliminating the residual image can obtain the compensation information and perform the compensation operation by calculation, that is, the operation of eliminating the residual image can be completed in the normal display process of the affected picture, and the detection is performed by occupying only one frame, and The user's sensory influence is not excessively affected, and the user hardly notices the discontinuity of the frame that affects the picture. This avoids the need for the user to stand by to eliminate the residual image and affect the customer experience, and can eliminate the afterimage. [0045] Embodiment 2

[0046] Since some frames of the image frame are occupied, that is, the frame included in the image frame is reduced compared with the originally included frame, which causes the overall brightness of the image frame to decrease. Therefore, based on the foregoing embodiment, the embodiment further clarifies the method for eliminating image sticking in the above embodiment. In this embodiment, the operation of increasing the grayscale value of each sub-pixel under the image screen can be performed to avoid the reduction of the overall brightness of the image frame.

[0047] Specifically, increasing the grayscale value of each sub-pixel under the image frame includes:

[0048] acquiring a grayscale value of each sub-pixel in the display screen under the image screen;

[0049] The grayscale threshold of each pixel is determined according to the following formula:

[0050] wherein, Gray _th is a grayscale threshold, and the Gray dish is a maximum grayscale value of each pixel, that is, a maximum grayscale value in each pixel.

[0051] Obtain a brightening grayscale value according to the following formula:

[0052] Among them, Gray. Is the initial grayscale value, Gray. 'is a bright grayscale value;

[0053] After displaying the image frame, adjusting the grayscale value of the sub-pixel whose grayscale value is greater than or equal to the grayscale threshold in each sub-pixel to the maximum grayscale value, and setting the grayscale value in each sub-pixel to be smaller than the grayscale threshold. The sub-pixels are adjusted from the initial grayscale value to the highlighted grayscale value.

[0054] It should be noted that, in the embodiment, the operation of increasing the grayscale value of each sub-pixel in the image frame may be performed after the detection module 201 starts detecting, and then displaying the image frame again, and further, the image is improved. The operation of the grayscale value of each sub-pixel is performed during the continuation of the image frame.

Compared with the prior art, this embodiment can not only eliminate the residual image in the case of avoiding the user's standby, but also eliminate the residual image after the user normally views the image, and by setting the grayscale value to be greater than or equal to gray. The gray level of the sub-pixel of the order threshold is adjusted to the maximum gray level, for example, 255 gray level, and the gray level of the sub-pixel smaller than the gray level threshold is adjusted to the brightness gray level value, that is, the gray level value of each sub-pixel of the image picture is increased. , and then improve the shadow Like the brightness of the whole picture, it is avoided that the overall brightness of the image picture is reduced due to the occupied frame of the image picture, which affects the customer experience.

[0056] Embodiment 3

[0057] The method of eliminating the afterimage of the above embodiment is specifically exemplified below.

[0058] First, the device for eliminating the residual image first determines whether the current display image is a video image, for example, comparing whether the grayscale value of each pixel corresponding to the current frame is the same as the previous frame, and if the comparison result is the same, determining the current display. The screen is an image screen.

[0059] Next, the sub-pixels are detected by occupying 1 frame per interval of P frames, and the aging information of the sub-pixels is obtained. Specifically, the step may include: acquiring a detection frame every P frame, detecting a driving voltage of the detected sub-pixel under the frame is equal to a driving voltage of the sub-pixel under the image frame, and adopting the detection frame instead of the frame corresponding to the image frame, and The detection current of the sub-pixel is acquired under the detection frame.

[0060] For example, suppose that the detection of all sub-pixels is 300 seconds, and the sub-pixels of the OLED display have a total of 3,840 columns x2

160 lines. Assume that P is 3, that is, insert 1 frame detection frame every 3 frames. That is, if the display frequency of the image screen is 120 frames/second, now 120 frames/second X (1-1/(1+4)) = 96 frames are displayed in 1 second, and the display screen of the human eye is 60 frames/second or more. The pause is not noticed, so that even if one frame is detected every 3 frames, the senses of the human eye are not affected. Similarly, it is also possible to perform one frame detection every 8 frames, that is, the display frequency of the still image is 102 frames/second, which does not affect the senses of the human eye.

[0061] The compensation screen corresponding to the detection frame in this embodiment may be obtained according to the image image. For example, the grayscale values of the detected sub-pixels in the detection frame are the same as the grayscale of the sub-pixels of the image frame, and other sub-pixels. The grayscale values can all be zero.

[0062] Then, the compensation voltage of the sub-pixel at the preset voltage is acquired according to the detection current.

[0063] It is assumed that one frame is required for detecting the sub-pixels, and three times of the compensation voltage of the sub-pixels at the preset voltage is obtained according to the detection power, and the device for eliminating the residual image can be calculated just after the next detection. The compensation voltage of the detected sub-pixel is completed.

[0064] Finally, the driving voltage of the sub-pixel is adjusted such that the actual current of the sub-pixel reaches an initial current, and the adjusted driving voltage is equal to the sum of the compensation voltage and the preset voltage, and the initial current is that the sub-pixel is not aged and is at a preset voltage. Current.

[0065] The compensation operation can be performed immediately after the calculation of the compensation voltage is completed, that is, the image display is performed, It can also be performed after acquiring the compensation voltages of all the sub-pixels, that is, after the image screen is displayed, for example, the compensation voltage is stored in the compensation voltage table in advance, and finally, the sub-pixels are uniformly adjusted according to the compensation voltage table, which can be specifically determined according to Actually need to be set.

[0066] Specifically, after the first row of sub-pixels is detected, immediately switch to the display of the image frame, after 3 frames to be displayed, detect the second row of sub-pixels, and then immediately switch to the display of the image frame, Loop until all sub-pixels in the OLED display are detected.

[0067] In addition, the operation of increasing the grayscale value as in the second embodiment may be performed on the sub-pixel corresponding to the image image, and details are not described herein.

Compared with the prior art, the method for eliminating image sticking in this embodiment detects a sub-pixel by occupying one frame in the image display process, until the aging information of all the sub-pixels is acquired, and then the image is obtained. The frame corresponding to the screen displays 吋, the device that eliminates the residual image can obtain the compensation information and perform the compensation operation through calculation, thus avoiding the need for the user to stand by to eliminate the residual image, affecting the customer experience, and eliminating the residual image.

[0069] Embodiment 4

[0070] The embodiment provides a device for eliminating image sticking, which is used to perform the method for eliminating image sticking in the first embodiment.

[0071] As shown in FIG. 2, it is a schematic structural diagram of an apparatus for eliminating image sticking according to the present embodiment. The apparatus for eliminating image sticking includes: a detecting module 201, an obtaining module 202, and a compensating module 203.

[0072] The detecting module 201 is configured to detect the sub-pixels of the sub-pixels every time the P-frames occupy one frame during the image display process, and obtain the aging information of the sub-pixels, where P is a positive integer greater than 1. The obtaining module 202 is configured to acquire compensation information of the sub-pixel according to the aging information. The compensation module 203 is configured to compensate the sub-pixel according to the compensation information to reduce the gray-scale attenuation of the sub-pixel.

[0073] The detection period of the embodiment cannot be too long, so that the user who is watching the display perceives that the picture is not continuous, thereby avoiding affecting the user experience, so the detection time is set to 1 frame. Assuming that the user detects that one line of a sub-pixel in the display is one frame, one line of sub-pixels is detected each time. Thus, by detecting 1 line every P frame, all sub-pixels can be detected.

[0074] P can be selected according to actual needs. For example, the P frame may be used to calculate the time of acquiring the compensation information of the detected 1 row of sub-pixels. That is, the operation of calculating the compensation information of the sub-pixels can be performed simultaneously with the display of the image screen, and the operation does not affect the display of the image screen. Of course, P can be set according to actual needs. , will not repeat them here.

[0075] The aging information of the embodiment may be the current information of the currently detected sub-pixel, or the ideal current of the sub-pixel corresponding to the driving voltage of the detected sub-pixel and the actual current of the detected sub-pixel. The difference between the two can be set according to actual needs, and will not be described here.

[0076] The pixel of the OLED display includes four sub-pixels, which are a red sub-pixel, a green sub-pixel, a blue sub-pixel, and a white sub-pixel, respectively.

[0077] Optionally, the detecting module 201 of this embodiment is specifically configured to:

[0078] acquiring a detection frame every P frame, and detecting a driving voltage of the detected sub-pixel under the frame is equal to a driving voltage of the sub-pixel under the image frame;

[0079] replacing the frame corresponding to the image frame by using the detection frame;

[0080] The detection current of the sub-pixel is acquired under the detection frame.

[0081] Optionally, the obtaining module 202 of this embodiment is specifically configured to:

[0082] acquiring a compensation voltage of the sub-pixel at a preset voltage according to the detection current; accordingly, the compensation module 203 is specifically configured to:

[0083] adjusting a driving voltage of the sub-pixel to make the current of the sub-pixel reach an initial current, the adjusted driving voltage is equal to a sum of the compensation voltage and the preset voltage, and the initial current is a current of the sub-pixel not aging at a preset voltage

The specific operations of the obtaining module 202 and the compensating module 203 are all in the prior art, and are not described herein again.

[0085] Optionally, as shown in FIG. 3, the apparatus for eliminating image sticking in this embodiment further includes a comparison module 301, where the comparison module 301 is configured to:

[0086] comparing whether the grayscale value of each pixel corresponding to the current frame is the same as the previous frame;

[0087] If the comparison result is the same, it is determined that the current display screen is a static screen, and the detection module 201 is triggered.

[0088] That is, when the comparison module 301 determines that the current display picture is a static picture, the trigger detection module 201 performs the corresponding action, thereby implementing the elimination of the residual image.

[0089] Compared with the prior art, in the apparatus for eliminating image sticking in the embodiment, the detecting module 201 detects the sub-pixel by occupying one frame during the image image display process, until the aging information of all the sub-pixels is acquired. Further, after the frame corresponding to the image screen is displayed, the obtaining module 202 can obtain compensation information through calculation and The compensating module 203 performs a compensation operation on each sub-pixel according to the compensation information acquired by the obtaining module 202, that is, the operation of eliminating the residual image can be completed in the normal display process of the influencing screen, and since only one frame is used for detection, The user's senses have an excessive influence, and the user hardly notices the discontinuity of the frame that affects the picture. This avoids the need for the user to stand by to eliminate the residual image, affect the customer experience, and eliminate the residual image.

[0090] Embodiment 5

[0091] Since some frames of the image frame are occupied, that is, the frame included in the image frame is reduced compared with the originally included frame, which causes the overall brightness of the image frame to decrease. Therefore, based on the foregoing embodiment, the embodiment further clarifies the apparatus for eliminating image sticking in the above embodiment. In this embodiment, the operation of increasing the grayscale value of each sub-pixel in the image frame can be increased to avoid the reduction of the overall brightness of the image frame.

[0092] As shown in FIG. 4, it is a schematic structural diagram of an apparatus for eliminating image sticking according to the present embodiment. The device for eliminating image sticking may include an improvement module 401 for improving the sub-pixels under the image screen, in addition to the detection module 201, the acquisition module 202, the compensation module 203, and the comparison module 301 of the foregoing embodiment. Grayscale value. More specifically, the enhancement module 401 is used to:

[0093] acquiring an initial grayscale value of each sub-pixel in the display screen under the image screen;

[0094] The grayscale threshold of each pixel is determined according to the following formula:

[0095] wherein, Gray _th is a grayscale threshold, and the Gray dish is a maximum grayscale value of each pixel;

[0096] Obtain a brightening grayscale value according to the following formula:

[0097] Among them, Gray. Is the initial grayscale value, Gray. 'is a bright grayscale value;

[0098] After displaying the image frame, adjusting the grayscale value of the sub-pixel whose grayscale value is greater than or equal to the grayscale threshold in each sub-pixel to the maximum grayscale value, and setting the grayscale value in each sub-pixel to be smaller than the grayscale threshold. The sub-pixels are adjusted from the initial grayscale value to the highlighted grayscale value. [0099] As shown in FIG. 4, when the comparison module 301 recognizes that the current display image is the image frame, the trigger module 401 can be triggered to perform the operation. Of course, after the detection module 201 is triggered to perform the operation, the comparison module 301 performs the corresponding operation, which may be specifically set according to actual needs, and details are not described herein again.

[0100] The operation method of the device for eliminating image sticking in this embodiment is the same as that in the second embodiment, and details are not described herein again.

Compared with the prior art, the device for eliminating image sticking in this embodiment can not only eliminate image sticking in the case of avoiding user standby, but also improve the module 401 by using sub-pixels whose grayscale value is greater than or equal to the grayscale threshold. The gray scale is adjusted to the maximum gray level, for example, 255 gray scale, and the gray scale of the sub-pixel smaller than the gray scale threshold is adjusted to the bright gray scale value, that is, the gray scale value of each sub-pixel of the image image is increased, thereby improving the image frame. The overall brightness avoids the overall brightness of the image frame due to the occupied frame of the image frame, which affects the customer experience.

[0102] The present invention also provides a display comprising the apparatus for eliminating afterimages of any of the above embodiments.

[0103] It will be understood by those skilled in the art that all or part of the steps of implementing the foregoing method embodiments may be performed by hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed. In addition, the steps of the foregoing method embodiments are performed; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: The technical solutions described in the foregoing embodiments may be modified, or some of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. .

Claims

Claim

[Claim 1] A method for eliminating image sticking, comprising:

During the image display process, the sub-pixels are detected by the inter-frame P frame for 1 frame, and the aging information of the sub-pixel is obtained, where P is a positive integer greater than 1.

Obtaining compensation information of the sub-pixel according to the aging information; compensating the sub-pixel according to the compensation information to reduce grayscale attenuation of the sub-pixel.

[Claim 2] The method for eliminating image sticking according to claim 1, further comprising:

Increasing the grayscale value of each sub-pixel under the image screen.

[Claim 3] The method for eliminating the residual image according to claim 2, wherein the increasing the grayscale value of each sub-pixel under the image frame comprises:

Obtaining an initial grayscale value of each sub-pixel in the display screen of the image screen;

The grayscale threshold of each pixel is determined according to the following formula:

Where Gray _th is the grayscale threshold, and Gray is the maximum grayscale value of each pixel; the brightness grayscale value is obtained according to the following formula:

Among them, Gray. Is the initial grayscale value, Gray. ' is a bright grayscale value; after displaying the image frame, adjusting a grayscale value of a sub-pixel whose grayscale value is greater than or equal to the grayscale threshold in each sub-pixel to the maximum grayscale value, And adjusting, in the sub-pixels, a sub-pixel whose gray-scale value is smaller than the gray-scale threshold from the initial gray-scale value to the brightness-increasing gray-scale value.

[Claim 4] The method for eliminating image sticking according to claim 1, wherein the image picture is a static picture, and the interval P frame takes up one frame before detecting the sub-pixel Includes:

Comparing whether the grayscale value of each pixel corresponding to the current frame is the same as the previous frame;

If the comparison result is the same, it is determined that the current display picture is a static picture, and triggering the operation of detecting the sub-pixels by occupying one frame per P frame.

[Claim 5] The method for eliminating image sticking according to any one of claims 1 to 4, wherein the interval P frame occupies 1 frame to detect sub-pixels, and obtains the sub-pixel Aging information, including:

Acquiring a detection frame every P frame, wherein a driving voltage of the sub-pixel detected under the detection frame is equal to a driving voltage of the sub-pixel under the image frame;

Substituting the detection frame for a frame corresponding to the image frame;

A detection current of the sub-pixel is acquired under the detection frame.

[Claim 6] The method for eliminating the residual image according to claim 5, wherein the acquiring the compensation information of the sub-pixel according to the aging information comprises:

Acquiring the compensation voltage of the sub-pixel at the preset voltage according to the detection current; the compensating the sub-pixel according to the compensation information includes:

Adjusting a driving voltage of the sub-pixel such that an actual current of the sub-pixel reaches an initial current, the adjusted driving voltage is equal to a sum of the compensation voltage and the preset voltage, and the initial current is the sub-pixel Aging the current at the predetermined voltage.

[Claim 7] The method of eliminating image sticking according to claim 1, wherein the P is a positive integer greater than or equal to 3.

[Claim 8] A device for eliminating image sticking, comprising:

The detecting module is configured to detect, in the process of displaying the image picture, the sub-pixels of the sub-pixels for each frame of the P frame, and obtain the aging information of the sub-pixels, where P is a positive integer greater than one;

An obtaining module, configured to acquire compensation information of the sub-pixel according to the aging information; and a compensation module, configured to compensate the sub-pixel according to the compensation information, to reduce grayscale attenuation of the sub-pixel.

[Attachment 9] The device for eliminating image sticking according to claim 8, further comprising: The improvement module is configured to increase a grayscale value of each sub-pixel under the image frame.

[Claim 10] The apparatus for eliminating image sticking according to claim 9, wherein the improvement module is specifically configured to:

Among them, Gra y. Is the initial grayscale value, Gray. 'is a bright grayscale value;

After displaying the image frame 调整, adjusting a grayscale value of the sub-pixels in which the grayscale value is greater than or equal to the grayscale threshold in each sub-pixel to the maximum grayscale value, and in each of the sub-pixels A sub-pixel having a grayscale value smaller than the grayscale threshold is adjusted from the initial grayscale value to the highlighted grayscale value.

The device for eliminating image sticking according to claim 8, wherein the image frame is a static image, and the device for eliminating image sticking further comprises a comparison module, wherein the comparison module is used for:

[Claim 12] The apparatus for eliminating image sticking according to any one of claims 8-11, wherein the detecting module is specifically configured to:

Substituting the detection frame for a frame corresponding to the image frame; Acquiring the detection power of the sub-pixel under the detection frame

The apparatus for eliminating image sticking according to claim 11, wherein the acquiring module is configured to: acquire a compensation voltage of the sub-pixel at the preset voltage according to the detection current ;

The compensation module is specifically configured to: adjust a driving voltage of the sub-pixel to make a current of the sub-pixel reach an initial current, and the adjusted driving voltage is equal to a sum of the compensation voltage and the preset voltage, the initial The current is a current at which the sub-pixel is not aged at the predetermined voltage.

[Attachment 14] The apparatus for eliminating image sticking according to claim 8, wherein the P is a positive integer greater than or equal to 3.

[Claim 15] A display comprising the elimination according to any one of claims 8-14