Compensation method, compensation device and display device of display panel

Abstract

The application discloses a compensation method, a compensation device and a display device of a display panel. The compensation method of the display panel comprises the following steps: obtaining the position of a failed sub-pixel; and obtaining a life compensation model corresponding to the failed sub-pixel. Each sub-pixel comprises a pixel driving circuit and at least two sub-pixels, the at least two sub-pixels are electrically connected with the output end of the pixel driving circuit, the failed sub-pixel is a sub-pixel in which at least one sub-pixel is failed and at least one sub-pixel is not failed, the life compensation model is used for compensating the brightness change of the sub-pixel which is not failed in the failed sub-pixel caused by the increase of the light-emitting time length, the accumulated light-emitting time length of the failed sub-pixel is determined, and the failed sub-pixel is compensated according to the life compensation model corresponding to the failed sub-pixel and the accumulated light-emitting time length. The application can improve the color deviation of the display panel and improve the display effect.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to a compensation method, compensation device, and display device for a display panel. Background Technology

[0002] With the development of display technology, people have increasingly higher requirements for the display performance of display panels.

[0003] In traditional display panel manufacturing, a fine metal mask (FMM) is typically used to pattern the light-emitting pixels. FMM technology is mature and has extensive mass production experience. However, FMM technology also suffers from limitations in precision, high development costs, and long development cycles. Fine metal maskless technology eliminates the limitations of traditional OLED processes on display size, resolution, and other screen performance aspects, offering advantages such as high performance, full-size display, and agile delivery. Patents CN118251982A, CN115666161A, CN116648095A, CN117062489A, CN118870876A, CN118804633A, CN118870915A, CN118678814A, CN118785762A, CN118678772A, CN118695740A, and CN118678744A describe relevant content regarding the technology of eliminating fine metal masks, and are provided for reference.

[0004] However, existing display panels develop color shift issues over time, affecting display performance. Summary of the Invention

[0005] This invention provides a compensation method, compensation device, and display device for a display panel, in order to improve the color deviation of the display panel and enhance the display effect.

[0006] According to one aspect of the present invention, a compensation method for a display panel is provided, comprising:

[0007] The location of the failed sub-pixel is obtained; the lifetime compensation model corresponding to the failed sub-pixel is obtained; wherein, each sub-pixel includes a pixel driving circuit and at least two molecular pixels, the at least two molecular pixels being electrically connected to the output terminal of the pixel driving circuit; the failed sub-pixel is a sub-pixel in which at least one of the molecular pixels has failed and at least one of the molecular pixels has not failed; the lifetime compensation model is used to compensate for the brightness change of the non-failed molecular pixels in the failed sub-pixel caused by the increase of the emission duration;

[0008] Determine the cumulative emission duration of the failed sub-pixel;

[0009] The failed sub-pixel is compensated based on the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration.

[0010] Optionally, obtain the lifetime compensation model corresponding to the failed sub-pixel, including:

[0011] Determine the failure type of the failed sub-pixel;

[0012] The lifetime compensation model corresponding to the failed sub-pixel is obtained according to the failure type of the failed sub-pixel; wherein, the failure type is determined according to the number of failed sub-pixels in the failed sub-pixel and the emission color of the failed sub-pixel; the lifetime compensation model corresponding to the failed sub-pixel is different for different failure types.

[0013] Optionally, the lifetime compensation model includes a lifetime compensation function for the failed sub-pixel; wherein, the lifetime compensation function is a function of the compensation value of the failed sub-pixel changing with the emission duration, or, the lifetime compensation function is a function of the driving data after compensation, the driving data before compensation, and the emission duration.

[0014] The failed sub-pixel is compensated based on the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration, including:

[0015] The failed sub-pixels are compensated based on the cumulative emission duration and the lifetime compensation function;

[0016] Optionally, the lifetime compensation function is determined based on the lifetime curves of normal sub-pixels and failed sub-pixels; the lifetime curve is the curve of the sub-pixel's luminance changing with the duration of luminance.

[0017] Optionally, the lifetime compensation model includes the lifetime curves of normal sub-pixels and the lifetime curves of failed sub-pixels; the lifetime curve is the curve of the change of the luminous intensity of the sub-pixel with the duration of luminous emission.

[0018] The failed sub-pixel is compensated based on the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration, including:

[0019] Based on the cumulative emission duration, the lifetime curve of the normal sub-pixel, and the lifetime curve of the failed sub-pixel, the normal emission brightness and the failed emission brightness corresponding to the cumulative emission duration are determined; wherein, the normal emission brightness is the brightness corresponding to the cumulative emission duration on the lifetime curve of the normal sub-pixel, and the failed emission brightness is the brightness corresponding to the cumulative emission duration on the lifetime curve of the failed sub-pixel.

[0020] The failed sub-pixel is compensated based on the normal luminance and the failed luminance;

[0021] Optionally, compensation is performed on the failed sub-pixel based on the normal luminance and the failed luminance, including:

[0022] The compensation value of the failed sub-pixel is determined based on the normal luminance and the failed luminance;

[0023] The failed sub-pixels are compensated according to the compensation value.

[0024] Optionally, determining the cumulative emission duration of the failed sub-pixel includes:

[0025] Obtain the emission duration of the failed sub-pixel under each driving data; determine the cumulative emission duration of the failed sub-pixel based on the emission duration of the failed sub-pixel under each driving data;

[0026] Optionally, the cumulative emission duration of the failed sub-pixel is determined based on the emission duration of the failed sub-pixel under each driving data, including:

[0027] Determine the first equivalent emission duration of the failed sub-pixel under the preset driving data, corresponding to the emission duration under each driving data;

[0028] The cumulative emission duration of the failed sub-pixel is determined based on the first equivalent emission duration corresponding to each driving data.

[0029] Optionally, the cumulative emission duration of the failed sub-pixel is determined based on the first equivalent emission duration corresponding to each driving data, including:

[0030] The cumulative emission duration of the failed sub-pixel is determined based on the sum of the first equivalent emission durations corresponding to each driving data.

[0031] Optionally, the lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission under the drive of preset driving data.

[0032] Optionally, determining the cumulative emission duration of the failed sub-pixel includes:

[0033] Obtain the emission duration of the failed sub-pixel at each display brightness level and each display grayscale.

[0034] The cumulative emission duration of the failed sub-pixel is determined based on the emission duration of the failed sub-pixel at each display brightness level and each display grayscale level.

[0035] Optionally, the cumulative emission duration of the failed sub-pixel is determined based on the emission duration at each display grayscale level for each display brightness level, including:

[0036] Determine the second equivalent emission duration of the failed sub-pixel at a preset grayscale, corresponding to the emission duration at each display brightness level and each display grayscale.

[0037] The first total equivalent light emission duration under the same display brightness level is determined based on the second equivalent light emission duration corresponding to each display grayscale level.

[0038] The cumulative light emission duration of the failed sub-pixel is determined based on the first total equivalent light emission duration corresponding to each display brightness level;

[0039] Optionally, the cumulative emissivity duration of the failed sub-pixel is determined based on the first total equivalent emissivity duration corresponding to each display brightness level, including:

[0040] Determine the second total equivalent light emission time of the failed sub-pixel at the preset display grayscale under the preset display brightness level, corresponding to the first total equivalent light emission time of each display brightness level;

[0041] The cumulative light emission duration of the failed sub-pixel is determined based on the second total equivalent light emission duration corresponding to each display brightness level;

[0042] Optionally, the cumulative light emission duration of the failed sub-pixel is determined based on the second total equivalent light emission duration corresponding to each display brightness level, including:

[0043] The cumulative light emission duration of the failed sub-pixel is determined based on the sum of the second total equivalent light emission duration corresponding to each display brightness level;

[0044] Optionally, the lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission at a preset display brightness level and preset display grayscale.

[0045] Optionally, before obtaining the location of the failed sub-pixel, the following steps are also included:

[0046] Acquire the image displayed on the display panel;

[0047] The position of the failed sub-pixel is determined based on the image, and the position of the failed sub-pixel is stored in the display panel;

[0048] Optionally, in addition to determining the position of the failed sub-pixel based on the image and storing the position of the failed sub-pixel in the display panel, the method further includes:

[0049] The failure type of the failed sub-pixel is determined based on the image, and the failure type of the failed sub-pixel is stored in the display panel.

[0050] Optionally, each of the molecular pixels includes a first electrode, a light-emitting functional layer, and a second electrode stacked sequentially, and the light-emitting functional layers of different molecular pixels in the same sub-pixel are disconnected from each other;

[0051] Optionally, each of the sub-pixels further includes an encapsulation layer, and the encapsulation layers of different sub-pixels are disconnected from each other;

[0052] Optionally, the first electrode is electrically connected to the output terminal of the pixel driving circuit, and the first electrodes of different sub-pixels in the same sub-pixel are interconnected.

[0053] According to another aspect of the present invention, a compensation device for a display panel is provided, comprising:

[0054] The location acquisition module is used to acquire the location of the failed sub-pixel;

[0055] A lifetime compensation model acquisition module is used to acquire the lifetime compensation model corresponding to the failed sub-pixel. Each sub-pixel includes a pixel driving circuit and at least two molecular pixels, and the at least two molecular pixels are electrically connected to the output terminal of the pixel driving circuit. At least one of the molecular pixels in the failed sub-pixel is failed, and at least one of the molecular pixels is not failed.

[0056] The cumulative emission duration determination module is used to determine the cumulative emission duration of the failed sub-pixel;

[0057] The compensation module is used to compensate the failed sub-pixel according to the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration.

[0058] According to another aspect of the present invention, a display device is provided, including a display panel and a compensation device for the display panel as described in any embodiment of the present invention.

[0059] The compensation method of this invention obtains the lifetime compensation model corresponding to the failed sub-pixel, determines the cumulative light emission duration of the failed sub-pixel, and compensates the failed sub-pixel according to the lifetime compensation model and the cumulative light emission duration. This can compensate for the brightness change of the non-failed sub-pixels in the failed sub-pixel as the usage time increases, avoid color shift when displaying the image, and improve the display effect of the display panel.

[0060] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0061] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0062] Figure 1 This is a flowchart of a compensation method for a display panel provided in an embodiment of the present invention;

[0063] Figure 2 This is a schematic diagram of a display panel provided in an embodiment of the present invention;

[0064] Figure 3 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention;

[0065] Figure 4 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention;

[0066] Figure 5 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention;

[0067] Figure 6 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention;

[0068] Figure 7 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention;

[0069] Figure 8 This is a schematic diagram of a compensation device for a display panel provided in an embodiment of the present invention;

[0070] Figure 9 This is a schematic diagram of a display device provided in an embodiment of the present invention. Detailed Implementation

[0071] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0072] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0073] As mentioned in the background section, existing display panels develop color shift issues over time, affecting display quality. The inventors discovered that this problem arises because a sub-pixel in a display panel is divided into two or more independent sub-pixels. Two or more sub-pixels within a sub-pixel are connected to the same pixel driving circuit and are driven to emit light by this same circuit. When one or more sub-pixels in a sub-pixel fail, all the current output from the pixel driving circuit flows through the unfailed sub-pixels. This increases the current density in the unfailed sub-pixels, shortening their lifespan. After prolonged use, the brightness of these unfailed sub-pixels changes, leading to a change in sub-pixel brightness and resulting in color shift in the displayed image, thus affecting the display panel's performance.

[0074] To address the aforementioned problems, embodiments of the present invention provide a compensation method for a display panel. Figure 1 This is a flowchart of a compensation method for a display panel provided in an embodiment of the present invention, see reference. Figure 1 The compensation methods for the display panel include:

[0075] S100, Obtain the position of the failed sub-pixel.

[0076] The display panel stores the positions of all failed sub-pixels. When the display panel displays the image, it first retrieves the positions of the failed sub-pixels in order to accurately compensate for them.

[0077] S110. Obtain the lifetime compensation model corresponding to the failed sub-pixel.

[0078] Figure 2 This is a schematic diagram of a display panel provided in an embodiment of the present invention, for reference. Figure 1Each sub-pixel 10 includes a pixel driving circuit and at least two molecular pixels 11, and the at least two molecular pixels 11 are electrically connected to the output terminal of the pixel driving circuit. A failed sub-pixel is a sub-pixel 10 in which at least one molecular pixel 11 fails and at least one molecular pixel 11 does not fail. The lifetime compensation model is used to compensate for the brightness change of the non-failed molecular pixels in the failed sub-pixel as the emission time increases.

[0079] In this design, all sub-pixels 11 of each sub-pixel 10 share a single pixel driving circuit. All sub-pixels 11 of a sub-pixel 10 emit the same color. Each sub-pixel 11 is a light-emitting unit; exemplarily, each sub-pixel 11 is an organic light-emitting unit. The sub-pixel 11 may include an anode, a cathode, and an organic light-emitting functional layer disposed between the anode and cathode. The organic light-emitting functional layer includes an organic light-emitting layer, and may further include at least one of a hole injection layer, a hole transport layer, an electron blocking layer, an electron transport layer, and an electron injection layer.

[0080] Subpixel 11 failure means that subpixel 11 cannot emit light under the drive of the pixel driving circuit. In a failed subpixel composition, at least one subpixel 11 is failed, and at least one subpixel 11 is not failed; that is, the failed subpixel composition contains both emitting and failed subpixels. The failed subpixel can emit light under the drive of the pixel driving circuit. However, because the entire output of the pixel driving circuit in the failed subpixel flows through the unfailed subpixel 11, the current density of the unfailed subpixel 11 is high, resulting in a shorter lifespan for the unfailed subpixel. As usage time increases, the brightness of the unfailed subpixel 11 changes, causing a change in the brightness of the failed subpixel.

[0081] The lifetime compensation model is used to compensate for the brightness change of the non-failed sub-pixels 11 in the failed sub-pixels due to the increase in usage time. In other words, the lifetime compensation model is used to compensate for the lifetime loss of the failed sub-pixels. The lifetime compensation model can be a relationship model between the cumulative emission time and the compensation value, or a relationship model between the cumulative emission time and the emission brightness of the failed sub-pixels and the target brightness.

[0082] S120. Determine the cumulative emission duration of the failed sub-pixel.

[0083] The cumulative emission duration is the total equivalent emission duration of all emission durations from the first emission of the failed sub-pixel to the current moment. The cumulative emission duration can be determined based on the emission duration of each emission by the failed sub-pixel, as well as the driving data, grayscale, or brightness of each emission. For example, the emission duration of the failed sub-pixel under each driving data or brightness level can be stored, the equivalent emission duration corresponding to each driving data or brightness level can be calculated, and all equivalent emission durations can be summed to obtain the cumulative emission duration.

[0084] S130. Compensate the failed sub-pixels according to the lifetime compensation model and cumulative emission duration corresponding to the failed sub-pixels.

[0085] Specifically, the failed sub-pixel is compensated based on the lifetime compensation model and the cumulative emission duration corresponding to the failed sub-pixel. The compensation value of the failed sub-pixel can be determined based on the lifetime compensation model and the cumulative emission duration, or the driving data after compensation of the failed sub-pixel can be determined based on the lifetime compensation model and the cumulative emission duration.

[0086] The compensation method of this invention obtains the lifetime compensation model corresponding to the failed sub-pixel, determines the cumulative light emission duration of the failed sub-pixel, and compensates the failed sub-pixel according to the lifetime compensation model and the cumulative light emission duration. This can compensate for the brightness change of the non-failed sub-pixels in the failed sub-pixel as the usage time increases, avoid color shift when displaying the image, and improve the display effect of the display panel.

[0087] Figure 3 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention, see reference. Figure 1 and Figure 3 This embodiment is based on the above embodiment and optimizes the above implementation. Specifically, S110, obtaining the lifetime compensation model corresponding to the failed sub-pixel, is optimized to include: S111, determining the failure type of the failed sub-pixel; S112, obtaining the lifetime compensation model corresponding to the failed sub-pixel based on the failure type of the failed sub-pixel; wherein, the failure type is determined based on the number of failed sub-pixels and the emission color of the failed sub-pixel; different lifetime compensation models correspond to different failure types of failed sub-pixels. (Reference) Figure 3 The optimized compensation method for the display panel includes the following steps:

[0088] S100, Obtain the position of the failed sub-pixel.

[0089] S111. Determine the failure type of the failed sub-pixel. The failure type is determined based on the number of failed sub-pixels and the emission color of the failed sub-pixel.

[0090] In each sub-pixel, at least two sub-pixels emit the same color, and the emission color of the sub-pixel can be red, green, or blue, etc. Each sub-pixel can contain two or more sub-pixels. A failed sub-pixel can contain one or two failed sub-pixels, etc. The failure type of a failed sub-pixel is determined based on the number of failed sub-pixels and the emission color of the failed sub-pixel. For example, a failed sub-pixel containing two sub-pixels may have failure types including one failed red sub-pixel, one failed green sub-pixel, and one failed blue sub-pixel; a failed sub-pixel containing three sub-pixels may have failure types including one failed red sub-pixel, one failed green sub-pixel, one failed blue sub-pixel, two failed red sub-pixels, two failed green sub-pixels, and two failed blue sub-pixels.

[0091] S112. Obtain the lifetime compensation model corresponding to the failed sub-pixel based on its failure type. The lifetime compensation model differs for different failure types of the failed sub-pixel.

[0092] Among these, the luminance of sub-pixels with different emission colors varies with the emission duration; among sub-pixels with different numbers of failed sub-pixels, the current density and other parameters of the non-failed sub-pixels differ, resulting in different lifetime losses for the non-failed sub-pixels. In other words, the luminance of the non-failed sub-pixels varies with the emission duration. Therefore, the luminance of failed sub-pixels with different failure types varies with the emission duration. By setting different lifetime compensation models for failed sub-pixels with different failure types, targeted compensation can be performed for each failure type of sub-pixel, improving compensation accuracy.

[0093] S120. Determine the cumulative emission duration of the failed sub-pixel.

[0094] S130. Compensate the failed sub-pixels according to the lifetime compensation model and cumulative emission duration corresponding to the failed sub-pixels.

[0095] The compensation method for the display panel in this embodiment of the invention obtains the lifetime compensation model corresponding to the failed sub-pixel based on the failure type of the failed sub-pixel; different lifetime compensation models correspond to different failure types of failed sub-pixels; and compensation is performed on the failed sub-pixel based on the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration. The failure type is determined based on the number of failed sub-pixels and the emission color of the failed sub-pixel. Since the emission brightness of failed sub-pixels of different failure types varies with the emission duration, this embodiment sets different lifetime compensation models corresponding to different failure types of failed sub-pixels, which allows for targeted compensation for each failure type of sub-pixel, improving compensation accuracy, further avoiding color shift in the display panel, and improving the display effect of the display panel.

[0096] Figure 4 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention, see reference. Figure 1 and Figure 4 This embodiment is based on the above embodiment and optimizes the above implementation. The lifetime compensation model is defined to include a lifetime compensation function for failed sub-pixels. The lifetime compensation function is a function of the compensation value of the failed sub-pixel changing with the emission duration, or a function of the driving data after compensation, the driving data before compensation, and the emission duration. Furthermore, S130, compensating the failed sub-pixel according to the lifetime compensation model and the cumulative emission duration, is optimized to: S131, compensating the failed sub-pixel according to the cumulative emission duration and the lifetime compensation function. (Reference) Figure 4 The optimized compensation method for the display panel includes the following steps:

[0097] S100, Obtain the position of the failed sub-pixel.

[0098] S110. Obtain the lifetime compensation model corresponding to the failed sub-pixel.

[0099] S120. Determine the cumulative emission duration of the failed sub-pixel.

[0100] S131. Compensate the failed sub-pixels according to the cumulative light emission duration and lifetime compensation function.

[0101] Specifically, when the lifetime compensation function is a function of the change in compensation value of the failed sub-pixel with the emission duration, the failed sub-pixel is compensated based on the cumulative emission duration and the lifetime compensation function. That is, the compensation value of the failed sub-pixel is directly determined based on the cumulative emission duration and the lifetime compensation function, and the driving data of the failed sub-pixel is compensated based on the compensation value. When the lifetime compensation function is a function of the compensated driving data, the uncompensated driving data, and the emission duration, the failed sub-pixel is compensated based on the cumulative emission duration and the lifetime compensation function. That is, the compensated driving data is directly determined based on the lifetime compensation function and the current driving data, and the failed sub-pixel is driven to emit light based on the compensated driving data.

[0102] The lifetime compensation model in this embodiment of the invention includes a lifetime compensation function for failed sub-pixels; the lifetime compensation function is a function of the change of the compensation value of the failed sub-pixel with the emission duration, or the lifetime compensation function is a function of the driving data after compensation, the driving data before compensation, and the emission duration, so that the compensation value of the failed sub-pixel or the driving data after compensation can be directly determined based on the cumulative emission duration, thereby improving the compensation speed.

[0103] Based on the above embodiments, optionally, the lifetime compensation function is determined according to the lifetime curve of the normal sub-pixel and the lifetime curve of the failed sub-pixel; the lifetime curve is the curve of the change of the luminous brightness of the sub-pixel with the duration of luminous emission.

[0104] Specifically, normal subpixels are those that have not failed. The lifetime curve of normal subpixels of the same color as failed subpixels can be tested. Various failure types of subpixels are created, and the lifetime curve of each failure type is tested. The lifetime compensation function for each failure type of subpixel is determined based on the lifetime curve of that failure type and the lifetime curve of normal subpixels of the same color. The lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission under preset driving data, or the curve showing the change in luminance of a subpixel with the duration of emission under preset display brightness levels and preset display grayscale. In this embodiment, the lifetime compensation function is determined based on the lifetime curves of normal and failed subpixels, so that after compensation for failed subpixels according to the lifetime compensation function, the luminance of failed subpixels is close to that of normal subpixels, avoiding color shift when the display panel shows the image and improving the display effect.

[0105] Figure 5 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention, see reference. Figure 1 and Figure 5 This embodiment is based on the above embodiment and optimizes the above implementation. The lifetime compensation model is defined to include the lifetime curve of normal sub-pixels and the lifetime curve of failed sub-pixels; the lifetime curve is the curve of the change of the luminance of the sub-pixel with the duration of luminance; and S130, which compensates the failed sub-pixel according to the lifetime compensation model corresponding to the failed sub-pixel and the cumulative luminance duration, is optimized to include: S132, determining the normal luminance and failed luminance corresponding to the cumulative luminance duration according to the cumulative luminance duration, the lifetime curve of normal sub-pixels and the lifetime curve of failed sub-pixels; wherein, the normal luminance is the luminance corresponding to the cumulative luminance duration on the lifetime curve of normal sub-pixels, and the failed luminance is the luminance corresponding to the cumulative luminance duration on the lifetime curve of failed sub-pixels; S133, compensating the failed sub-pixel according to the normal luminance and the failed luminance.

[0106] refer to Figure 4 The optimized compensation method for the display panel includes the following steps:

[0107] S100, Obtain the position of the failed sub-pixel.

[0108] S110. Obtain the lifetime compensation model corresponding to the failed sub-pixel.

[0109] S120. Determine the cumulative emission duration of the failed sub-pixel.

[0110] S132. Based on the cumulative emission duration, the lifetime curve of the normal sub-pixel, and the lifetime curve of the failed sub-pixel, determine the normal emission brightness and the failed emission brightness corresponding to the cumulative emission duration; wherein, the normal emission brightness is the brightness corresponding to the cumulative emission duration on the lifetime curve of the normal sub-pixel, and the failed emission brightness is the brightness corresponding to the cumulative emission duration on the lifetime curve of the failed sub-pixel.

[0111] Specifically, the brightness corresponding to the cumulative emission duration can be found on the lifetime curve of the normal sub-pixel, and this brightness is determined as the normal emission brightness. The brightness corresponding to the cumulative emission duration can be found on the lifetime curve of the failed sub-pixel, and this brightness is determined as the failed emission brightness. S133, Compensate the failed sub-pixel based on the normal emission brightness and the failed emission brightness.

[0112] Specifically, compensating for failed sub-pixels based on normal luminance and failed luminance can be achieved by determining the compensation value of the failed sub-pixel based on the difference or ratio between the normal luminance and the failed luminance, and then compensating for the failed sub-pixel based on the compensation value.

[0113] The lifetime compensation model in this embodiment includes the lifetime curves of normal sub-pixels and failed sub-pixels. Based on the cumulative emission duration, the lifetime curves of normal and failed sub-pixels, the normal emission brightness and failed emission brightness corresponding to the cumulative emission duration are determined. The failed sub-pixels are compensated based on the normal emission brightness and failed emission brightness, so that after the failed sub-pixels are compensated according to the lifetime compensation function, the emission brightness of the failed sub-pixels is close to that of the normal sub-pixels, avoiding color shift when the display panel displays the image and improving the display effect of the display panel.

[0114] Based on the above embodiments, optionally, compensation for failed sub-pixels can be performed according to normal luminous intensity and failed luminous intensity, including:

[0115] The compensation value for the failed sub-pixel is determined based on the normal luminance and the failed luminance.

[0116] Compensate for the failed sub-pixels based on the compensation value.

[0117] Specifically, the compensation value for the failed sub-pixel can be calculated based on the difference or ratio between the normal luminance and the failed luminance. The driving data of the failed sub-pixel is then compensated based on this compensation value. For example, the driving data corresponding to the failed sub-pixel can be added, subtracted, multiplied, or divided by the compensation value to obtain the compensated driving data. The failed sub-pixel is then driven to emit light based on the compensated driving data.

[0118] Figure 6 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention, see reference. Figure 1 and Figure 6 This embodiment is based on the above embodiment and optimizes the above implementation. S120, determining the cumulative emission duration of the failed sub-pixel, is optimized as follows: S121, obtaining the emission duration of the failed sub-pixel under each driving data; S122, determining the cumulative emission duration of the failed sub-pixel based on the emission duration of the failed sub-pixel under each driving data. (Reference) Figure 5 The optimized compensation method for the display panel includes the following steps:

[0119] S100, Obtain the position of the failed sub-pixel.

[0120] S110. Obtain the lifetime compensation model corresponding to the failed sub-pixel.

[0121] S121. Obtain the emission duration of the failed sub-pixel under each driving data.

[0122] Specifically, the driving data and duration of each emission from the failed sub-pixel can be recorded. The driving data can be data characterizing the emission level of the failed sub-pixel, such as driving current or driving voltage. The emission duration of each driving data point can be the total emission duration of the failed sub-pixel from its first emission to the current moment under that driving data.

[0123] S122. Determine the cumulative emission duration of the failed sub-pixel based on the emission duration of the failed sub-pixel under each driving data.

[0124] Specifically, since the lifetime loss of failed sub-pixels varies under different luminous levels, the luminous duration of each driving data can be normalized to obtain the equivalent luminous duration corresponding to each driving data. Based on the equivalent luminous duration corresponding to each driving data, the cumulative luminous duration is determined.

[0125] S130. Compensate the failed sub-pixels according to the lifetime compensation model and cumulative emission duration corresponding to the failed sub-pixels.

[0126] This embodiment determines the cumulative emission duration of a failed sub-pixel based on the emission duration of the failed sub-pixel under each driving data, making the determined cumulative emission duration more accurate, thereby making the compensation for the failed sub-pixel more accurate and improving the display effect.

[0127] Based on the above embodiments, optionally, the cumulative emission duration of the failed sub-pixel is determined according to the emission duration of the failed sub-pixel under each driving data, including:

[0128] Determine the first equivalent emissivity duration of the failed sub-pixel under the preset driving data, corresponding to the emissivity duration under each driving data.

[0129] The cumulative emission duration of the failed sub-pixel is determined based on the first equivalent emission duration corresponding to each driving data.

[0130] The first equivalent emission duration is the equivalent emission duration of the failed sub-pixel under preset driving data. For example, the emission duration A1 of the failed sub-pixel under driving data A is equivalent to the emission duration A2 under preset driving data, and the first equivalent emission duration corresponding to A1 is the duration A2. The preset driving data can be the driving data corresponding to the maximum emission brightness of the failed sub-pixel. Since the lifetime loss of the sub-pixel differs under the same emission duration at different brightness levels, the emission duration under each driving data is normalized, and the first equivalent emission duration under the preset driving data is calculated for each. Then, the cumulative emission duration is calculated based on the first equivalent emission duration, so that the calculated cumulative emission duration can accurately reflect the degree of lifetime loss of the failed sub-pixel under the preset driving data, thereby accurately compensating for the failed sub-pixel.

[0131] Based on the above embodiments, optionally, the cumulative emission duration of the failed sub-pixel is determined according to the first equivalent emission duration corresponding to each driving data, including:

[0132] The cumulative emission duration of the failed sub-pixel is determined based on the sum of the first equivalent emission duration corresponding to each driving data.

[0133] Specifically, the sum of all first equivalent durations is determined as the cumulative emission duration of the failed sub-pixel.

[0134] Based on the above embodiments, optionally, the lifetime curve is the curve of the change of the luminous brightness of the sub-pixel with the duration of luminous emission under the drive of preset driving data.

[0135] Specifically, the cumulative emission duration is determined based on the first equivalent emission duration of the failed sub-pixel under the preset driving data. The cumulative emission duration is the total emission duration of the failed sub-pixel under the preset driving data. The lifetime curve is set as the curve showing the change in emission brightness of the sub-pixel with the emission duration under the driving of the preset driving data, so that the compensation accuracy is higher when compensating for the failed sub-pixel based on the lifetime curve or based on the lifetime function and the cumulative emission duration.

[0136] Figure 7 This is a flowchart of another compensation method for a display panel provided in an embodiment of the present invention, see reference. Figure 1 and Figure 7This embodiment is based on the above embodiment and optimizes the above implementation. S120, determining the cumulative emission duration of the failed sub-pixel, is optimized as follows: S123, obtaining the emission duration of the failed sub-pixel at each display brightness level and each display grayscale; S124, determining the cumulative emission duration of the failed sub-pixel based on the emission duration of the failed sub-pixel at each display brightness level and each display grayscale. (Reference) Figure 7 The optimized compensation method for the display panel includes the following steps:

[0137] S100, Obtain the position of the failed sub-pixel.

[0138] S110. Obtain the lifetime compensation model corresponding to the failed sub-pixel.

[0139] S123. Obtain the emission duration of the failed sub-pixel at each display brightness level and each display grayscale.

[0140] The display brightness level (DBV) can be multiple levels on the display panel. All levels have a minimum display brightness of 0, but different levels have different maximum display brightness. Each level can display brightness levels ranging from 0 to (2). n -1) Grayscale, where n is an integer greater than or equal to 8. For example, each display brightness level can display 0-255 grayscale levels. Different display brightness levels will have different brightness levels at the same grayscale.

[0141] Specifically, the duration of light emission of a failed sub-pixel at each display grayscale level can be recorded and stored in the display panel for each display brightness level.

[0142] S124. Determine the cumulative emissivity duration of the failed sub-pixel based on the emissivity duration of the failed sub-pixel at each display brightness level and each display grayscale level.

[0143] Specifically, because the brightness varies at the same grayscale level under different display brightness levels, the lifespan loss of failed sub-pixels differs at the same grayscale level under different display brightness levels. The emission duration at each display grayscale level under each display brightness level can be normalized to obtain the normalized equivalent emission duration. The cumulative emission duration of failed sub-pixels can then be determined based on the equivalent emission duration.

[0144] S130. Compensate the failed sub-pixels according to the lifetime compensation model and cumulative emission duration corresponding to the failed sub-pixels.

[0145] This embodiment determines the cumulative light emission duration of a failed sub-pixel based on the light emission duration at each display brightness level and each display grayscale level, making the determined cumulative light emission duration more accurate. This results in more accurate compensation for the failed sub-pixel and a better improvement in display performance.

[0146] Based on the above embodiments, optionally, the cumulative emission duration of the failed sub-pixel is determined according to the emission duration at each display grayscale level under each display brightness level, including:

[0147] Determine the second equivalent emissivity duration of the failed sub-pixel at the preset grayscale corresponding to the emissivity duration at each display brightness level and each display grayscale.

[0148] The first total equivalent light emission duration under the same display brightness level is determined based on the second equivalent light emission duration corresponding to each display grayscale level.

[0149] The cumulative emissivity duration of the failed sub-pixel is determined based on the first total equivalent emissivity duration corresponding to each display brightness level.

[0150] Specifically, under the same display brightness level, the second equivalent emission duration at a preset grayscale is calculated for the emission duration of each display grayscale. Then, the sum of the second equivalent emission durations under the same display brightness level is calculated to obtain the first total equivalent emission duration. The preset display grayscale can be the maximum display grayscale under the display brightness level, for example, 255 grayscale. The cumulative emission duration of the failed sub-pixel is determined based on the first total equivalent emission duration corresponding to each display brightness level. This can be achieved by normalizing each first total equivalent emission duration, calculating the normalized equivalent emission duration, and then calculating the cumulative emission duration based on the normalized equivalent emission duration.

[0151] Based on the above embodiments, optionally, the cumulative light emission duration of the failed sub-pixel is determined according to the first total equivalent light emission duration corresponding to each display brightness level, including:

[0152] Determine the second total equivalent emissivity of the failed sub-pixel corresponding to the first total equivalent emissivity ...

[0153] The cumulative emissivity duration of the failed sub-pixel is determined based on the second total equivalent emissivity duration corresponding to each display brightness level.

[0154] The preset display brightness level can be the most commonly used display brightness level on the display panel. Each equivalent light-emitting duration can be normalized to obtain the equivalent light-emitting duration at the preset display grayscale level corresponding to each first equivalent light-emitting duration, i.e., the second total equivalent light-emitting duration. All second total equivalent light-emitting durations are summed to obtain the cumulative light-emitting duration.

[0155] Based on the above embodiments, optionally, the cumulative light emission duration of the failed sub-pixel is determined according to the second total equivalent light emission duration corresponding to each display brightness level, including:

[0156] The cumulative emission duration of the failed sub-pixel is determined based on the sum of the second total equivalent emission duration corresponding to each display brightness level.

[0157] Optionally, the lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission at a preset display brightness level and preset display grayscale.

[0158] Specifically, the cumulative emission duration is determined based on the second total equivalent emission duration of the failed sub-pixel at the preset display brightness level and preset display grayscale. The cumulative emission duration is the total emission duration of the failed sub-pixel at the preset display brightness level and preset display grayscale. The lifetime curve is set as the curve showing the change in emission brightness of the sub-pixel with the emission duration at the preset display brightness level and preset display grayscale. This results in higher compensation accuracy when compensating for failed sub-pixels based on the lifetime curve or lifetime function and the cumulative emission duration.

[0159] Based on the above embodiments, optionally, before obtaining the location of the failed sub-pixel, the method further includes:

[0160] Acquire the image displayed on the display panel;

[0161] The location of the faulty subpixel is determined based on the image, and the location of the faulty subpixel is stored in the display panel.

[0162] Specifically, a high-definition CCD camera can be used to photograph the entire luminous area of ​​the display panel. Image recognition is then performed on the captured images to determine the location of all faulty sub-pixels, and these images are stored.

[0163] Based on the above embodiments, optionally, while determining the position of the failed sub-pixel according to the image and storing the position of the failed sub-pixel in the display panel, the method further includes:

[0164] The failure type of the failed sub-pixel is determined based on the image, and the failure type of the failed sub-pixel is stored in the display panel.

[0165] Specifically, based on the captured image, the location and failure type of the failed sub-pixel are identified and stored.

[0166] Based on the above embodiments, optionally, each sub-pixel includes a first electrode, a light-emitting functional layer, and a second electrode stacked sequentially, and the light-emitting functional layers of different sub-pixels in the same sub-pixel are disconnected from each other.

[0167] Specifically, one of the first electrode and the second electrode is a cathode, and the other is an anode. The light-emitting functional layer may include at least one of a hole injection layer, a hole transport layer, a resistive blocking layer, a hole blocking layer, an electron transport layer, and an electron injection layer, and the light-emitting functional layer may also include an organic light-emitting layer. The light-emitting functional layers of different molecular pixels are separated by pixel-defining layers.

[0168] Based on the above embodiments, optionally, each sub-pixel also includes an encapsulation layer, and the encapsulation layers of different sub-pixels are disconnected from each other.

[0169] The encapsulation layer is a thin-film encapsulation layer, which may include stacked organic and inorganic layers. Each sub-pixel is encapsulated independently.

[0170] Based on the above embodiments, optionally, the first electrode is electrically connected to the output terminal of the pixel driving circuit, and the first electrodes of different sub-pixels in the same sub-pixel are connected to each other.

[0171] Specifically, the driving current output by the pixel driving circuit is input to each molecular pixel through the first electrode.

[0172] This invention also provides a compensation device for a display panel. Figure 8 This is a schematic diagram of a compensation device for a display panel provided in an embodiment of the present invention, with reference to... Figure 8 The compensation device for the display panel includes:

[0173] The position acquisition module 240 is used to acquire the position of the failed sub-pixel.

[0174] The lifetime compensation model acquisition module 210 is used to acquire the lifetime compensation model corresponding to the failed sub-pixel. Each sub-pixel includes a pixel driving circuit and at least two molecular pixels. The at least two molecular pixels are electrically connected to the output terminal of the pixel driving circuit. At least one molecular pixel in the failed sub-pixel is failed, and at least one molecular pixel is not failed.

[0175] The cumulative emission duration determination module 220 is used to determine the cumulative emission duration of the failed sub-pixel;

[0176] The compensation module 230 is used to compensate the failed sub-pixel according to the lifetime compensation model and the cumulative emission duration corresponding to the failed sub-pixel.

[0177] Optionally, the lifetime compensation model acquisition module 210 includes:

[0178] Failure type determination unit, used to determine the failure type of the failed sub-pixel;

[0179] The compensation model acquisition unit is used to acquire the lifetime compensation model corresponding to the failed sub-pixel based on the failure type of the failed sub-pixel; wherein, the failure type is determined based on the number of failed sub-pixels in the failed sub-pixel and the emission color of the failed sub-pixel; different lifetime compensation models are corresponding to failed sub-pixels with different failure types.

[0180] Optionally, the lifetime compensation model includes a lifetime compensation function for the failed sub-pixel; wherein, the lifetime compensation function is a function of the compensation value of the failed sub-pixel changing with the emission duration, or, the lifetime compensation function is a function of the driving data after compensation, the driving data before compensation, and the emission duration.

[0181] The compensation module 230 is specifically used for:

[0182] The failed sub-pixels are compensated based on the cumulative emission duration and the lifetime compensation function.

[0183] Optionally, the lifetime compensation function is determined based on the lifetime curves of normal sub-pixels and failed sub-pixels; the lifetime curve is the curve of the sub-pixel's luminance changing with the duration of luminance.

[0184] Optionally, the lifetime compensation model includes the lifetime curves of normal sub-pixels and the lifetime curves of failed sub-pixels; the lifetime curve is the curve of the change of the luminous intensity of the sub-pixel with the duration of luminous emission.

[0185] The compensation module 230 includes:

[0186] A brightness determination unit is used to determine the normal luminous brightness and the failed luminous brightness corresponding to the cumulative luminous duration based on the cumulative luminous duration, the lifetime curve of the normal sub-pixel, and the lifetime curve of the failed sub-pixel; wherein, the normal luminous brightness is the brightness corresponding to the cumulative luminous duration on the lifetime curve of the normal sub-pixel, and the failed luminous brightness is the brightness corresponding to the cumulative luminous duration on the lifetime curve of the failed sub-pixel.

[0187] The first compensation unit is used to compensate the failed sub-pixel based on the normal luminous intensity and the failed luminous intensity.

[0188] Optionally, the first compensation unit includes:

[0189] The compensation value determination subunit is used to determine the compensation value of the failed sub-pixel based on the normal luminous brightness and the failed luminous brightness.

[0190] The compensation subunit is used to compensate the failed sub-pixel according to the compensation value.

[0191] Optionally, the cumulative emission duration determination module 220 includes:

[0192] The first duration acquisition unit is used to acquire the emission duration of the failed sub-pixel under each driving data.

[0193] The first cumulative duration determination unit is used to determine the cumulative emission duration of the failed sub-pixel based on the emission duration of the failed sub-pixel under each driving data.

[0194] Optionally, the first cumulative duration determination unit includes:

[0195] The first subunit is used to determine the first equivalent light emission duration of the failed sub-pixel under the preset driving data, corresponding to the light emission duration under each driving data.

[0196] The second subunit is used to determine the cumulative emission duration of the failed sub-pixel based on the first equivalent emission duration corresponding to each driving data.

[0197] Optionally, the second sub-unit is specifically used for:

[0198] The cumulative emission duration of the failed sub-pixel is determined based on the sum of the first equivalent emission duration corresponding to each driving data.

[0199] Optionally, the lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission under the drive of preset driving data.

[0200] Optionally, the cumulative emission duration determination module 220 includes:

[0201] The second duration acquisition unit is used to acquire the emission duration of the failed sub-pixel at each display brightness level and each display grayscale.

[0202] The second cumulative duration determination unit is used to determine the cumulative emission duration of the failed sub-pixel based on the emission duration of the failed sub-pixel at each display brightness level and each display grayscale.

[0203] Optionally, the second cumulative duration determination unit includes:

[0204] The third subunit is used to determine the second equivalent light emission duration of the failed sub-pixel at a preset gray level, corresponding to the light emission duration at each display brightness level and each display gray level.

[0205] The fourth subunit is used to determine the first total equivalent light emission duration under the display brightness level based on the second equivalent light emission duration corresponding to each display grayscale under the same display brightness level;

[0206] The fifth sub-unit is used to determine the cumulative light emission duration of the failed sub-pixel based on the first total equivalent light emission duration corresponding to each display brightness level.

[0207] Optionally, the fifth subunit includes:

[0208] The first sub-unit is used to determine the second total equivalent light emission time of the failed sub-pixel at the preset display grayscale under the preset display brightness level, corresponding to the first total equivalent light emission time of each display brightness level.

[0209] The second sub-unit is used to determine the cumulative light emission duration of the failed sub-pixel based on the second total equivalent light emission duration corresponding to each display brightness level.

[0210] Optionally, the second molecular unit is specifically used for:

[0211] The cumulative emission duration of the failed sub-pixel is determined based on the sum of the second total equivalent emission duration corresponding to each display brightness level.

[0212] Optionally, the lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission at a preset display brightness level and preset display grayscale.

[0213] The location of the failed sub-pixel can be obtained optionally, and the compensation device also includes:

[0214] The image acquisition module is used to acquire the image of the display panel when the screen is displayed before acquiring the position of the failed sub-pixel;

[0215] A position determination and storage module is used to determine the position of the failed sub-pixel based on the image and store the position of the failed sub-pixel in the display panel;

[0216] Optionally, the location determination and storage module is also used to include:

[0217] The position of the failed sub-pixel is determined based on the image, and the position of the failed sub-pixel is stored in the display panel. At the same time, the failure type of the failed sub-pixel is determined based on the image, and the failure type of the failed sub-pixel is stored in the display panel.

[0218] Optionally, each of the molecular pixels includes a first electrode, a light-emitting functional layer, and a second electrode stacked sequentially, and the light-emitting functional layers of different molecular pixels in the same sub-pixel are disconnected from each other;

[0219] Optionally, each of the sub-pixels further includes an encapsulation layer, and the encapsulation layers of different sub-pixels are disconnected from each other;

[0220] Optionally, the first electrode is electrically connected to the output terminal of the pixel driving circuit.

[0221] This invention also provides a display device. Figure 9 This is a schematic diagram of a display device provided in an embodiment of the present invention, with reference to... Figure 9 The display device 100 includes a display panel 200 and a compensation device 300 for the display panel as described in any embodiment of the present invention. The display device 100 can be an electronic device such as a mobile phone or a tablet computer.

[0222] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0223] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A compensation method for a display panel, characterized in that, include: Get the position of the failed sub-pixel; Obtain the lifetime compensation model corresponding to the failed sub-pixel; wherein, each sub-pixel includes a pixel driving circuit and at least two molecular pixels, the at least two molecular pixels being electrically connected to the output terminal of the pixel driving circuit; the failed sub-pixel is a sub-pixel in which at least one of the molecular pixels has failed and at least one of the molecular pixels has not failed; the lifetime compensation model is used to compensate for the brightness change of the non-failed molecular pixels in the failed sub-pixel caused by the increase of the emission duration; Determine the cumulative emission duration of the failed sub-pixel; The failed sub-pixel is compensated based on the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration.

2. The compensation method according to claim 1, characterized in that, Obtain the lifetime compensation model corresponding to the failed sub-pixel, including: Determine the failure type of the failed sub-pixel; The lifetime compensation model corresponding to the failed sub-pixel is obtained according to the failure type of the failed sub-pixel; wherein, the failure type is determined according to the number of failed sub-pixels in the failed sub-pixel and the emission color of the failed sub-pixel; the lifetime compensation model corresponding to the failed sub-pixel is different for different failure types.

3. The compensation method according to claim 1, characterized in that: The lifetime compensation model includes a lifetime compensation function for the failed sub-pixel; wherein, the lifetime compensation function is a function of the compensation value of the failed sub-pixel changing with the emission duration, or, the lifetime compensation function is a function of the driving data after compensation, the driving data before compensation, and the emission duration. The failed sub-pixel is compensated based on the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration, including: The failed sub-pixels are compensated based on the cumulative emission duration and the lifetime compensation function; Preferably, the lifetime compensation function is determined based on the lifetime curves of normal sub-pixels and failed sub-pixels; the lifetime curve is the curve of the change in luminance of a sub-pixel with the duration of luminescence.

4. The compensation method according to claim 1, characterized in that: The lifetime compensation model includes the lifetime curves of normal sub-pixels and the lifetime curves of failed sub-pixels; the lifetime curve is the curve of the change of the luminous brightness of the sub-pixel with the duration of luminous emission. The failed sub-pixel is compensated based on the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration, including: Based on the cumulative emission duration, the lifetime curve of the normal sub-pixel, and the lifetime curve of the failed sub-pixel, the normal emission brightness and the failed emission brightness corresponding to the cumulative emission duration are determined; wherein, the normal emission brightness is the brightness corresponding to the cumulative emission duration on the lifetime curve of the normal sub-pixel, and the failed emission brightness is the brightness corresponding to the cumulative emission duration on the lifetime curve of the failed sub-pixel. The failed sub-pixel is compensated based on the normal luminance and the failed luminance; Preferably, compensating the failed sub-pixel based on the normal luminance and the failed luminance includes: The compensation value of the failed sub-pixel is determined based on the normal luminance and the failed luminance; The failed sub-pixels are compensated according to the compensation value.

5. The compensation method according to any one of claims 1-4, characterized in that, Determining the cumulative emission duration of the failed sub-pixel includes: Obtain the emission duration of the failed sub-pixel under each driving data; determine the cumulative emission duration of the failed sub-pixel based on the emission duration of the failed sub-pixel under each driving data; Preferably, determining the cumulative emission duration of the failed sub-pixel based on its emission duration under each driving data includes: Determine the first equivalent emission duration of the failed sub-pixel under the preset driving data, corresponding to the emission duration under each driving data; The cumulative emission duration of the failed sub-pixel is determined based on the first equivalent emission duration corresponding to each driving data. Preferably, determining the cumulative emission duration of the failed sub-pixel based on the first equivalent emission duration corresponding to each driving data includes: The cumulative emission duration of the failed sub-pixel is determined based on the sum of the first equivalent emission durations corresponding to each driving data. Preferably, the lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission under the drive of preset driving data.

6. The compensation method according to any one of claims 1-4, characterized in that, Determining the cumulative emission duration of the failed sub-pixel includes: Obtain the emission duration of the failed sub-pixel at each display brightness level and each display grayscale. The cumulative emission duration of the failed sub-pixel is determined based on the emission duration of the failed sub-pixel at each display brightness level and each display grayscale level. Preferably, the cumulative emission duration of the failed sub-pixel is determined based on the emission duration at each display grayscale level for each display brightness level, including: Determine the second equivalent emission duration of the failed sub-pixel at a preset grayscale, corresponding to the emission duration at each display brightness level and each display grayscale. The first total equivalent light emission duration under the same display brightness level is determined based on the second equivalent light emission duration corresponding to each display grayscale level. The cumulative light emission duration of the failed sub-pixel is determined based on the first total equivalent light emission duration corresponding to each display brightness level; Preferably, the cumulative light emission duration of the failed sub-pixel is determined based on the first total equivalent light emission duration corresponding to each display brightness level, including: Determine the second total equivalent light emission time of the failed sub-pixel at the preset display grayscale under the preset display brightness level, corresponding to the first total equivalent light emission time of each display brightness level; The cumulative light emission duration of the failed sub-pixel is determined based on the second total equivalent light emission duration corresponding to each display brightness level; Preferably, determining the cumulative light emission duration of the failed sub-pixel based on the second total equivalent light emission duration corresponding to each display brightness level includes: The cumulative light emission duration of the failed sub-pixel is determined based on the sum of the second total equivalent light emission duration corresponding to each display brightness level; Preferably, the lifetime curve is the curve showing the change in luminance of a subpixel with the duration of emission at a preset display brightness level and preset display grayscale.

7. The compensation method according to claim 2, characterized in that... Before obtaining the location of the failed sub-pixel, the following steps are also included: Acquire the image displayed on the display panel; The position of the failed sub-pixel is determined based on the image, and the position of the failed sub-pixel is stored in the display panel; Preferably, in addition to determining the position of the failed sub-pixel based on the image and storing the position of the failed sub-pixel in the display panel, the method further includes: The failure type of the failed sub-pixel is determined based on the image, and the failure type of the failed sub-pixel is stored in the display panel.

8. The compensation method according to claim 1, characterized in that: Each of the aforementioned molecular pixels includes a first electrode, a light-emitting functional layer, and a second electrode stacked sequentially, wherein the light-emitting functional layers of different molecular pixels within the same sub-pixel are disconnected from each other; Preferably, each of the sub-pixels further includes an encapsulation layer, and the encapsulation layers of different sub-pixels are disconnected from each other; Preferably, the first electrode is electrically connected to the output terminal of the pixel driving circuit, and the first electrodes of different molecular pixels in the same sub-pixel are interconnected.

9. A compensation device for a display panel, characterized in that, include: A location acquisition module is used to acquire the location of the failed sub-pixel; a lifetime compensation model acquisition module is used to acquire the lifetime compensation model corresponding to the failed sub-pixel, wherein each sub-pixel includes a pixel driving circuit and at least two molecular pixels, and the at least two molecular pixels are electrically connected to the output terminal of the pixel driving circuit; at least one of the molecular pixels in the failed sub-pixel is failed, and at least one of the molecular pixels is not failed; The cumulative emission duration determination module is used to determine the cumulative emission duration of the failed sub-pixel; The compensation module is used to compensate the failed sub-pixel according to the lifetime compensation model corresponding to the failed sub-pixel and the cumulative emission duration.

10. A display device, characterized in that, It includes a display panel and a compensation device for the display panel as described in claim 9.

Images