Method and electronic device for compensating for image sticking in display device

Abstract

The invention discloses a method of compensating for image sticking in a display device and an electronic device. The method includes: storing image residual compensation data representing a compensation value according to an amount of degradation of a pixel; executing an image residual compensation operation on test data based on the image residual compensation data; displaying a test image based on the test data; receiving an error compensation area input, wherein the error compensation area input represents an error compensation area in the test image; receiving a relative brightness input, wherein the relative brightness input represents whether the miscompensation area is brighter or darker than other areas in the test image except the miscompensation area; and determining an additional compensation value for the pixel in the miscompensation region based on the degradation amount of the pixel in the miscompensation region, based on the miscompensation region input, and based on the relative luminance input.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a method of compensating for image sticking in a display device, and to an electronic device including the display device. Background Art

[0002] With the development of information technology, the importance of display devices as a connection medium between users and information has increased. Therefore, display devices such as liquid crystal display devices, organic light emitting display devices, and plasma display devices are increasingly used. Among these display devices, organic light emitting display devices display images using organic light emitting diodes that generate light through the recombination of electrons and holes. Organic light emitting display devices have a relatively high response speed and are driven with relatively low power consumption.

[0003] However, when the organic light emitting display device displays a fixed image for a long time, image retention (or mura) may be perceived in the image displayed by the organic light emitting display device due to aging of the organic light emitting diodes included in the organic light emitting display device. In order to remove or reduce such image retention, an image retention compensation operation may be performed by determining a compensation value corresponding to the degradation amount (or driving time) of each pixel based on image retention compensation data (or image retention compensation curve), and increasing the grayscale level of the image data for each pixel by the compensation value. However, because the same image retention compensation data (or the same image retention compensation curve) is applied to different display devices, due to the driving environment (e.g., temperature, ambient light, etc.) or panel distribution, etc., in at least a portion of the display device, the image retention may be over-compensated or under-compensated based on the same image retention compensation data. Summary of the invention

[0004] Some embodiments provide a method of compensating for image sticking in a display device based on input from a user.

[0005] Some embodiments provide an electronic device including a display device that compensates for image sticking based on an input from a user.

[0006] According to an embodiment, a method for compensating for image sticking in a display device is provided, the method comprising: storing image sticking compensation data, the image sticking compensation data representing a compensation value according to an amount of degradation of a pixel; performing an image sticking compensation operation on test data based on the image sticking compensation data; displaying a test image based on the test data; receiving an error compensation area input, the error compensation area input representing an error compensation area in the test image; receiving a relative brightness input, the relative brightness input representing whether the error compensation area is brighter or darker than the remaining areas in the test image except the error compensation area; and determining an additional compensation value for the pixel in the error compensation area based on the amount of degradation of the pixel in the error compensation area, based on the error compensation area input and based on the relative brightness input.

[0007] The method may further include determining that the miscompensated region is an overcompensated region based on the relative brightness input indicating that the miscompensated region is brighter than the remaining regions.

[0008] The additional compensation value for the pixels in the overcompensated area may be a negative value.

[0009] An absolute value of the additional compensation value for the pixel in the overcompensation region may increase as the degradation amount of the pixel increases.

[0010] Determining the additional compensation value for the pixel in the miscompensated area may include: determining a first additional compensation value for a first pixel having a first degradation amount in the overcompensated area; and determining a second additional compensation value for a second pixel in the overcompensated area having a second degradation amount greater than the first degradation amount, wherein the first additional compensation value and the second additional compensation value are negative values, and wherein an absolute value of the second additional compensation value is greater than an absolute value of the first additional compensation value.

[0011] The method may further include determining that the miscompensated region is an undercompensated region based on the relative brightness input indicating that the miscompensated region is darker than the remaining regions.

[0012] The additional compensation value for the pixels in the under-compensated area may be a positive value.

[0013] An absolute value of the additional compensation value for the pixel in the under-compensation region may increase as the degradation amount of the pixel increases.

[0014] Determining the additional compensation value for the pixel in the miscompensated area may include: determining a first additional compensation value for a first pixel having a first degradation amount in the under-compensated area; and determining a second additional compensation value for a second pixel in the under-compensated area having a second degradation amount greater than the first degradation amount, wherein the first additional compensation value and the second additional compensation value are positive values, and wherein an absolute value of the second additional compensation value is greater than an absolute value of the first additional compensation value.

[0015] The test data may represent the same gray level for the entire area of ​​the display panel.

[0016] The method may further include: re-performing the image sticking compensation operation on the test data based on the image sticking compensation data and based on the additional compensation value; displaying a corrected test image based on the test data on which the image sticking compensation operation is re-performed; and receiving a visibility evaluation input for the corrected test image.

[0017] The method may further include storing the additional compensation values ​​for the pixels in the miscompensated area based on the visibility assessment input indicating that the corrected test image has good visibility.

[0018] The method may further include re-determining the additional compensation value for the pixel in the miscompensation area by receiving the miscompensation area input and the relative brightness input again based on the visibility evaluation input indicating that the corrected test image has poor visibility.

[0019] According to an embodiment, a method for compensating for image sticking in a display device is provided, the method comprising: storing image sticking compensation data, the image sticking compensation data representing a compensation value according to an amount of degradation of a pixel; performing an image sticking compensation operation on test data based on the image sticking compensation data; displaying a test image based on the test data; receiving an error compensation area input, the error compensation area input representing an error compensation area in the test image; receiving a relative brightness input, the relative brightness input representing whether the error compensation area is brighter or darker than the remaining areas in the test image except the error compensation area; receiving a brightness level input, the brightness level input representing a brightness level or a darkness level of the error compensation area; and determining an additional compensation value for the pixel in the error compensation area based on the amount of degradation of the pixel in the error compensation area, based on the error compensation area input, based on the relative brightness input and based on the brightness level input.

[0020] An absolute value of the additional compensation value for the pixel in the miscompensation area may increase as the brightness level input increases.

[0021] According to an embodiment, an electronic device is provided, which includes: an input device; and a display device, wherein the display device includes: a display panel; and a panel driver configured to drive the display panel, the panel driver configured to store image sticking compensation data representing compensation values ​​according to the degradation amount of pixels of the display panel, the panel driver configured to perform an image sticking compensation operation on test data based on the image sticking compensation data, and the panel driver configured to drive the display panel to display a test image based on the test data, wherein the input device is configured to receive an error compensation area input representing an error compensation area in the test image, and the input device is configured to receive a relative brightness input representing whether the error compensation area is brighter or darker than the remaining areas in the test image except the error compensation area, and wherein the panel driver is configured to determine an additional compensation value for the pixel in the error compensation area based on the degradation amount of the pixel in the error compensation area, based on the error compensation area input and based on the relative brightness input.

[0022] The panel driver may be configured to determine that the miscompensated region is an overcompensated region based on the relative brightness input indicating that the miscompensated region is brighter than the remaining regions, or the panel driver may be configured to determine that the miscompensated region is an undercompensated region based on the relative brightness input indicating that the miscompensated region is darker than the remaining regions.

[0023] The additional compensation value for the pixel in the miscompensation area may be a negative value, or may be a positive value.

[0024] An absolute value of the additional compensation value for the pixel in the miscompensation region may increase as the degradation amount of the pixel increases.

[0025] The panel driver may be configured to receive a brightness level input representing a brightness level or a darkness level of the miscompensation area, wherein an absolute value of the additional compensation value for the pixel in the miscompensation area increases as the brightness level input increases.

[0026] As described above, in the method for compensating for image sticking in a display device according to an embodiment, and in an electronic device including a display device according to an embodiment, an erroneous compensation area input and a relative brightness input may be received from a user, and an additional compensation value for pixels in an erroneous compensation area (or an abnormal compensation area, such as an over-compensation area and / or an under-compensation area) may be determined based on the degradation amount, the erroneous compensation area input, and the relative brightness input. Therefore, image sticking may be removed or reduced in the display device, and the image quality of the display device may be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings.

[0028] Figure 1 is a flowchart illustrating a method of compensating for image sticking in a display device according to an embodiment.

[0029] Figure 2 is a diagram showing the luminance of each pixel according to the degradation amount of the pixel.

[0030] Figure 3 is a diagram for describing an example of an image sticking compensation operation.

[0031] Figure 4 is a diagram for describing an example of selecting an image sticking compensation area in a test image.

[0032] Figure 5 is a diagram for describing an example of additional compensation values ​​for pixels having different amounts of degradation in an overcompensation area.

[0033] Figure 6 is a diagram for describing an example of additional compensation values ​​for pixels having different amounts of degradation in an under-compensated area.

[0034] Figure 7 is a flowchart illustrating a method of compensating for image sticking in a display device according to an embodiment.

[0035] Figure 8 is a diagram for describing an example of additional compensation values ​​for pixels in an overcompensation area when different brightness level inputs are received.

[0036] Fig. 9 is a diagram for describing an example of additional compensation values ​​for pixels in an under-compensation area when different brightness level inputs are received.

[0037] Fig.10 is a block diagram illustrating an electronic device including a display device according to an embodiment.

[0038] Fig.11 is a block diagram illustrating an example of an electronic device according to an embodiment. DETAILED DESCRIPTION

[0039] By referring to the detailed description and drawings of the embodiments, it is easier to understand the various aspects of some embodiments of the present disclosure and the methods for implementing the various aspects of some embodiments of the present disclosure. The described embodiments are provided as examples so that the present disclosure will be thorough and complete, and will fully convey the various aspects of the present disclosure to those skilled in the art. Therefore, redundant, irrelevant or unrelated to the description of the embodiments, or unnecessary processes, elements and techniques for fully understanding the various aspects of the present disclosure for those of ordinary skill in the art can be omitted. Unless otherwise noted, in the entire drawings and written descriptions, the same reference numerals, characters or combinations thereof represent the same elements, and therefore, their repeated descriptions can be omitted.

[0040] The described embodiments may have various modifications and may be implemented in different forms, and should not be construed as being limited to the embodiments shown herein. The use of "may", "may" or "may not" when describing an embodiment corresponds to one or more embodiments of the present disclosure. The present disclosure covers all modifications, equivalents and substitutes within the scope of the ideas and techniques of the present disclosure. In addition, each of the features of the various embodiments of the present disclosure may be combined with each other in part or in whole, and various interlocks and drives are technically possible. Each embodiment may be implemented independently of one another, or may be implemented in conjunction.

[0041] For the purposes of this disclosure, expressions such as "at least one of..." or "any one of..." or "one or more of..." when following a list of elements modify the entire list of elements and do not modify individual elements in the list. For example, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, any combination of two or more of X, Y, and Z, such as XYZ, XY, YZ, and XZ, or any variation thereof. Similarly, the expression "at least one of A and B" may include A, B, or A and B. As used herein, "or" generally means "and / or," and the term "and / or" includes any and all combinations of one or more of the relevant listed items. For example, the expression "A and / or B" may include A, B, or A and B. Similarly, expressions such as “at least one of,” “a plurality of,” “one of,” and other prepositional phrases when preceding / preceding a list of elements modify the entire list of elements and do not modify the individual elements of the list.

[0042] It will be understood that, although the terms "first", "second", "third", etc. can be used in this article to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms do not correspond to a specific order, position or priority, and are only used to distinguish an element, member, component, region, area, layer, section or part from another element, member, component, region, area, layer, section or part. Therefore, without departing from the spirit and scope of the present disclosure, the first element, first component, first area, first layer or first section described below can be referred to as the second element, second component, second area, second layer or second section. Describing an element as a "first" element may not require or imply the presence of a second element or other elements. The terms "first", "second", etc. can also be used to distinguish between different categories or different groups of elements in this article. For simplicity, the terms "first", "second", etc. can respectively represent "first category (or first group)", "second category (or second group)", etc.

[0043] The terms used herein are only for the purpose of describing the embodiments and are not intended to limit the present disclosure. Unless the context clearly indicates otherwise, as used herein, the singular forms "a" and "one (kind / person)" are also intended to include the plural forms, and the plural forms are also intended to include the singular forms. It will also be understood that when used in this specification, the terms "comprises, comprising", "have, having" and "includes, including" illustrate the presence of stated features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or their groups.

[0044] When one or more embodiments can be implemented differently, a specific process order can be performed differently from the described order. For example, two processes described in succession can be performed substantially simultaneously or in an order opposite to the described order.

[0045] As used herein, the terms "substantially", "approximately", "approximately" and similar terms are used as approximate terms, rather than terms of degree, and are intended to illustrate the inherent deviations in measured or calculated values ​​that will be recognized by those of ordinary skill in the art. For example, "substantially" may include a range of + / - 5% of the corresponding value. Taking into account the measurement in question and the errors associated with the measurement of a particular quantity (i.e., the limitations of the measurement system), "approximately" or "approximately" as used herein include the stated values ​​and mean within the range of acceptable deviations for a particular value as determined by those of ordinary skill in the art. For example, "approximately" may mean within one or more standard deviations, or within ±30%, ±20%, ±10% or ±5% of the stated value. In addition, when describing embodiments of the present disclosure, the use of "may" refers to "one or more embodiments of the present disclosure".

[0046] In some embodiments, known structures and devices can be described in the accompanying drawings relative to one or more functional blocks (e.g., block diagrams), units and / or modules to avoid unnecessary blurring of various embodiments. It will be understood by those skilled in the art that these blocks, units and / or modules are physically implemented by logic circuits, discrete components, microprocessors, hard-wired circuits, memory elements, line connections and other electronic circuits. This can be formed using semiconductor-based manufacturing techniques or other manufacturing techniques. Blocks, units and / or modules implemented by microprocessors or other similar hardware can be programmed and controlled using software to perform various functions discussed herein, optionally driven by firmware and / or software. In addition, each block, unit and / or module can be implemented by a combination of dedicated hardware or dedicated hardware that performs some functions and a processor (e.g., one or more programmed microprocessors and associated circuits) that performs functions different from the functions of the dedicated hardware. In addition, in some embodiments, without departing from the scope of the present disclosure, blocks, units and / or modules can be physically divided into two or more discrete blocks, units and / or modules that interact with each other. Furthermore, in some embodiments, blocks, units and / or modules may be physically combined into more complex blocks, units and / or modules without departing from the scope of the present disclosure.

[0047] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as those commonly understood by those of ordinary skill in the art to which the present disclosure belongs. It will also be understood that, unless explicitly defined as such herein, terms (such as those defined in general dictionaries) should be interpreted as having a meaning consistent with their context in the relevant art and / or the meaning in this specification, and should not be interpreted in an idealized or overly formal sense.

[0048] Figure 1is a flowchart illustrating a method of compensating for image sticking in a display device according to an embodiment, Figure 2 is a diagram showing the luminance of each pixel according to the degradation amount of the pixel, Figure 3 is a diagram for describing an example of an image sticking compensation operation, Figure 4 is a diagram for describing an example of selecting an image retention compensation area in a test image, Figure 5 is a diagram for describing an example of additional compensation values ​​for pixels having different amounts of degradation in an overcompensation area, and Figure 6 is a diagram for describing an example of additional compensation values ​​for pixels having different amounts of degradation in an under-compensated area.

[0049] Reference Figure 1 In the method of compensating for image sticking in a display device according to an embodiment, the display device may store image sticking compensation data (or an image sticking compensation curve) representing a compensation value according to a degradation amount of each pixel of the display device (S100). Figure 2 An example of the luminance 210 of each pixel of the display device according to the degradation amount (or driving time) of each pixel is shown. Figure 2 As shown in , the luminance 210 of each pixel may decrease from the initial luminance IL as the degradation amount increases.

[0050] In order to compensate for the reduction in luminance due to the degradation of each pixel, the display device may store image sticking compensation data, and may perform an image sticking compensation operation based on the image sticking compensation data. For example, for each pixel of the display device, the display device may perform an image sticking compensation operation that compensates for the reduction in luminance by adding a compensation value corresponding to the degradation amount of the pixel represented by the image sticking compensation data to the grayscale represented by the input image data. In addition, for example, Figure 3 As shown in , the display device may perform an image sticking compensation operation based on image sticking compensation data indicating a compensation value that increases with an increase in the degradation amount, and thus the luminance 210 of each pixel may increase to a luminance 230 that is substantially the same as the initial luminance IL.

[0051] In addition, in the method for compensating image sticking according to the embodiment, the display device may perform an image sticking compensation operation on the test data based on the image sticking compensation data (S110), and may display a test image based on the test data on which the image sticking compensation operation is performed (S115). In some embodiments, the test data may represent the same grayscale for the entire area of ​​the display panel of the display device. For example, the test data may represent one of 96 grayscales to 127 grayscales, but is not limited thereto. In addition, the display device may perform an image sticking compensation operation that adds a compensation value corresponding to the degradation amount of each pixel to the same grayscale indicated by the test data.

[0052] like Figure 3 As shown in , for pixels having different degradation amounts, it may be appropriate that the test image displayed based on the test data on which the image sticking compensation operation is performed has a constant luminance 230. However, the same image sticking compensation data (or the same image sticking compensation curve) may be applied to different display devices, and therefore, due to the driving environment (e.g., temperature, ambient light, etc.), panel distribution, etc., in some of the display devices, the reduction in luminance due to the degradation of each pixel may not be accurately compensated to the initial luminance IL. That is, in some of the display devices, such as Figure 5 As shown in , the image sticking may be overcompensated based on the same image sticking compensation data, so that at least a portion of the test image may have a luminance 410 higher than the initial luminance IL, or as shown in Figure 6 As shown in , the image sticking may be under-compensated based on the same image sticking compensation data, so that at least a portion of the test image may have a luminance 460 lower than the initial luminance IL. Figure 5 and Figure 6 As shown in , as the degradation amount of each pixel increases, over-compensation or under-compensation of the image sticking compensation operation based on the image sticking compensation data may become more serious.

[0053] In the method for compensating image sticking according to an embodiment, in order to compensate for miscompensation of an image sticking compensation operation based on image sticking compensation data, the display device may receive a miscompensation region input from a user through an input device (e.g., a predetermined input device), wherein the miscompensation region input indicates a miscompensation region in a test image (S120). For example, Figure 4 As shown in , the user can select the miscompensation area 350 having higher or lower luminance than the remaining areas in the test image 300 through an input device (eg, a predetermined input device), and the display device can receive the miscompensation area input indicating the miscompensation area 350. Figure 4An example is shown in which the miscompensation area 350 has a rectangular shape, but the shape of the miscompensation area 350 selected by the user is not limited to a rectangular shape. In addition, in some embodiments, when the electronic device including the display device is a television, the input device (e.g., a predetermined input device) may be, but is not limited to, a remote controller; when the electronic device including the display device is a personal computer (such as a laptop computer), the input device (e.g., a predetermined input device) may be, but is not limited to, a mouse; when the display device includes a touch screen, the input device (e.g., a predetermined input device) may be, but is not limited to, a touch screen; and so on.

[0054] In addition, the display device may also receive a relative brightness input from the user through an input device (e.g., a predetermined input device), wherein the relative brightness input indicates whether the miscompensated area is brighter or darker than the remaining areas except the miscompensated area (S130). That is, the relative brightness input may indicate that the miscompensated area is brighter than the remaining areas, or may indicate that the miscompensated area is darker than the remaining areas.

[0055] The display device may determine an additional compensation value for each pixel in the miscompensation area based on the degradation amount of each pixel in the miscompensation area, based on the miscompensation area input, and based on the relative brightness input ( S140 ).

[0056] If the miscompensated area is brighter (brighter) than the remaining area, the display device may determine that the miscompensated area is an overcompensated area (S150). That is, based on the relative brightness input indicating that the miscompensated area is brighter than the remaining area, the display device may determine: Figure 5 As shown in , each pixel in the miscompensation region has a luminance 410 higher than the initial luminance IL; and the miscompensation region is an overcompensation region. Therefore, the display device can determine an additional compensation value as a negative value for each pixel in the overcompensation region to reduce the luminance 410 of each pixel in the overcompensation region.

[0057] In addition, for each pixel in the overcompensation area, the display device may determine an additional compensation value according to the degradation amount of the pixel (S155). In some embodiments, the display device may determine the additional compensation value for the pixel so that the absolute value of the additional compensation value increases as the degradation amount of the pixel in the overcompensation area increases.

[0058] Figure 5 An example of the luminance 410 of the overcompensated area and an example of the luminance 430 adjusted by the additional compensation value are shown. Figure 5As shown in, in the over-compensation area, the luminance 410 of each pixel may be higher than the initial luminance IL by an amount that increases as the degradation amount of the pixel increases. Therefore, the display device may determine a first additional compensation value ACV1 for a first pixel having a first degradation amount DA1 in the over-compensation area, and the first additional compensation value ACV1 is a negative value. In addition, the display device may determine a second additional compensation value ACV2 for a second pixel having a second degradation amount DA2 greater than the first degradation amount DA1 in the over-compensation area, and the second additional compensation value ACV2 is a negative value. The absolute value of the second additional compensation value ACV2 may be greater than the absolute value of the first additional compensation value ACV1. Therefore, the luminance of the first pixel may be reduced by a first luminance reduction amount LD1 by the first additional compensation value ACV1, and thus may become substantially equal to the initial luminance IL. In addition, the luminance of the second pixel may be reduced by a second luminance reduction amount LD2 greater than the first luminance reduction amount LD1 by the second additional compensation value ACV2, and thus may become substantially equal to the initial luminance IL. Therefore, the luminance 410 of the over-compensated area may become a luminance 430 substantially the same as the initial luminance IL.

[0059] Alternatively, refer to Figure 1 If the miscompensated area is darker than the remaining areas, the display device may determine that the miscompensated area is an undercompensated area (S160). That is, based on the relative brightness input indicating that the miscompensated area is darker than the remaining areas, the display device may determine: Figure 6 As shown in , each pixel in the miscompensation region has a luminance 460 lower than the initial luminance IL; and the miscompensation region is an under-compensation region. Therefore, the display device can determine that: for each pixel in the under-compensation region, the additional compensation value is a positive value to increase the luminance 460 of each pixel in the under-compensation region.

[0060] In addition, for each pixel in the under-compensation area, the display device may determine an additional compensation value according to the degradation amount of the pixel (S165). In some embodiments, the display device may determine the additional compensation value for the pixel so that the absolute value of the additional compensation value increases as the degradation amount of the pixel in the under-compensation area increases.

[0061] Figure 6 An example of the luminance 460 of the under-compensated region and an example of the luminance 480 adjusted by the additional compensation value are shown. Figure 6As shown in, in the under-compensation area, the luminance 460 of each pixel may be lower than the initial luminance IL by an amount that increases as the degradation amount of the pixel increases. Therefore, the display device may determine a first additional compensation value ACV1' for a first pixel having a first degradation amount DA1 in the under-compensation area, and the first additional compensation value ACV1' is a positive value. In addition, the display device may determine a second additional compensation value ACV2' for a second pixel having a second degradation amount DA2 greater than the first degradation amount DA1 in the under-compensation area, and the second additional compensation value ACV2' is a positive value. The absolute value of the second additional compensation value ACV2' may be greater than the absolute value of the first additional compensation value ACV1'. Therefore, the luminance of the first pixel may be increased by a first luminance increase amount LI1 by the first additional compensation value ACV1', and thus may become substantially equal to the initial luminance IL. In addition, the luminance of the second pixel may be increased by a second luminance increase amount LI2 greater than the first luminance increase amount LI1 by the second additional compensation value ACV2', and thus may become substantially equal to the initial luminance IL. Therefore, the luminance 460 of the under-compensated area may become a luminance 480 substantially the same as the initial luminance IL.

[0062] Reference Figure 1 Once the additional compensation value for each pixel in the miscompensated area (e.g., the over-compensated area and / or the under-compensated area) is determined, the display device may re-perform the image retention compensation operation on the test data based on the image retention compensation data and the additional compensation value (S170). The display device may display a corrected test image based on the test data on which the image retention compensation operation is re-performed (S175). For example, the display device may add the compensation value represented by the image retention compensation data to the same gray level represented by the test data with respect to each pixel in the remaining area (which is the area other than the miscompensated area), and may add not only the compensation value represented by the image retention compensation data to the same gray level represented by the test data but also the additional compensation value to the same gray level represented by the test data with respect to each pixel in the miscompensated area.

[0063] In addition, the display device may receive a visibility evaluation input for the corrected test image from the user through an input device (e.g., a predetermined input device) (S180). For example, when the corrected test image has substantially uniform luminance, the user may determine that the corrected test image has good visibility, and the display device may receive a visibility evaluation input indicating that the corrected test image has good visibility. Alternatively, when the miscompensated area still has higher or lower luminance than the remaining area, the user may determine that the corrected test image has poor visibility, and the display device may receive a visibility evaluation input indicating that the corrected test image has poor visibility.

[0064] If the visibility evaluation input indicates that the corrected test image has good visibility (approval), the display device may store an additional compensation value for each pixel in the miscompensation area (S190). Thereafter, the display device may generate output image data by performing an image residue compensation operation on the input image data based on the additional compensation value and the image residue compensation data. The display device may display an image based on the output image data. For example, the display device may generate output image data by adding a compensation value represented by the image residue compensation data to a grayscale represented by the input image data relative to each pixel in the remaining area except the miscompensation area. The display device may generate output image data by adding not only a compensation value represented by the image residue compensation data to a grayscale represented by the input image data but also an additional compensation value to a grayscale represented by the input image data relative to each pixel in the miscompensation area. Therefore, by performing an image residue compensation operation based on the image residue compensation data and the additional compensation value, image residues may be removed or reduced in the display device, and the image quality of the display device may be improved.

[0065] Alternatively, when the visibility assessment input indicates that the corrected test image has poor visibility (not recognized), the display device may receive the miscompensation area input and the relative brightness input from the user again (S120 and S130). The display device may re-determine the additional compensation value for each pixel in the miscompensation area (S140). The re-determination of the additional compensation value may be repeated until the user provides a visibility assessment input indicating that the corrected test image has good visibility.

[0066] As described above, in the method for compensating for image sticking in a display device according to an embodiment, an erroneous compensation area input and a relative brightness input may be received from a user, and an additional compensation value for each pixel in the erroneous compensation area may be determined based on the degradation amount of the pixel, the erroneous compensation area input, and the relative brightness input. Therefore, image sticking may be removed or reduced in the display device, and the image quality of the display device may be improved.

[0067] Figure 7 is a flowchart illustrating a method of compensating for image sticking in a display device according to an embodiment, and Figure 8 is a diagram for describing an example of additional compensation values ​​for pixels in an overcompensation area when different brightness level inputs are received.

[0068] In addition to further receiving a brightness level input from a user and further generating an additional compensation value based on the brightness level input, Figure 7 The method for compensating image sticking shown in Figure 1 The method of compensating for image sticking shown in is basically the same.

[0069] Reference Figure 7 In the method for compensating image sticking in a display device according to an embodiment, the display device may store image sticking compensation data (or an image sticking compensation curve) indicating a compensation value according to a degradation amount of each pixel of the display device (S100). The display device may perform an image sticking compensation operation on test data based on the image sticking compensation data (S110). The display device may display a test image based on the test data on which the image sticking compensation operation is performed (S115).

[0070] The display device may receive an input of an erroneous compensation region from a user, the input of the erroneous compensation region indicating an erroneous compensation region (or an abnormal compensation region) in a test image (S120). The display device may receive an input of a relative brightness from a user, the input of the relative brightness indicating whether the erroneous compensation region is brighter or darker than the remaining regions except the erroneous compensation region (S130). The display device may further receive an input of a brightness level from a user, the input of the brightness level indicating a brightness level or a darkness level of the erroneous compensation region (S135). For example, in a case where the relative brightness input indicates that the erroneous compensation region is brighter than the remaining regions, the brightness level input may indicate a selected one of two or more brightness levels that the erroneous compensation region is brighter than the remaining regions. In addition, in a case where the relative brightness input indicates that the erroneous compensation region is darker than the remaining regions, the brightness level input may indicate a selected one of two or more darkness levels that the erroneous compensation region is darker than the remaining regions.

[0071] The display device may determine an additional compensation value for each pixel in the miscompensation area based on the degradation amount of each pixel in the miscompensation area, based on the miscompensation area input, based on the relative brightness input, and based on the brightness level input ( S140 ′).

[0072] If the miscompensated area is brighter (brighter) than the remaining areas, the display device may determine that the miscompensated area is an overcompensated area (S150). For each pixel in the overcompensated area, the display device may determine an additional compensation value according to the degradation amount of the pixel and the brightness level input (S155'). In some embodiments, the display device may determine the additional compensation value so that the absolute value of the additional compensation value increases with the increase of the degradation amount of the pixel and increases with the increase of the brightness level input.

[0073] Figure 8 An example of the luminance 510 of the overcompensated area when a first brightness level input is received is shown, an example of the luminance 520 of the overcompensated area when a second brightness level input greater than the first brightness level input is received is shown, and an example of the luminance 530 corrected by the additional compensation value is shown. Figure 8As shown in , the display device may determine a first additional compensation value ACV1 with respect to a pixel having a degradation amount (e.g., a predetermined degradation amount) DA when receiving a first brightness level input, the first additional compensation value ACV1 being a negative value, and may determine a second additional compensation value ACV2 with respect to a pixel having a degradation amount (e.g., a predetermined degradation amount) DA when receiving a second brightness level input greater than the first brightness level input, the second additional compensation value ACV2 being a negative value and having an absolute value greater than the absolute value of the first additional compensation value ACV1. Therefore, when the first brightness level input is received, the luminance of the pixel may be reduced by a first luminance reduction amount LD1 by the first additional compensation value ACV1, and thus may become substantially equal to the initial luminance IL. In addition, when the second brightness level input is received, the luminance of the pixel may be reduced by a second luminance reduction amount LD2 greater than the first luminance reduction amount LD1 by the second additional compensation value ACV2, and thus may become substantially equal to the initial luminance IL. Therefore, the luminances 510 and 520 of the over-compensated regions may become a luminance 530 substantially the same as the initial luminance IL.

[0074] Alternatively, refer to Figure 7 , if the miscompensated area is darker (darker) than the remaining areas, the display device may determine that the miscompensated area is an under-compensated area (S160). For each pixel in the under-compensated area, the display device may determine an additional compensation value according to the degradation amount of the pixel and the brightness level input (S165'). In some embodiments, the display device may determine the additional compensation value so that the absolute value of the additional compensation value increases with the increase of the degradation amount of the pixel and increases with the increase of the brightness level input.

[0075] Fig. 9 is a diagram for describing an example of additional compensation values ​​for pixels in an under-compensation area when receiving different brightness level inputs. In detail, Fig. 9 An example of the luminance 560 of the under-compensated area when a first brightness level input is received is shown, an example of the luminance 570 of the under-compensated area when a second brightness level input greater than the first brightness level input is received is shown, and an example of the luminance 580 corrected by the additional compensation value is shown. Fig. 9As shown in , the display device may determine a first additional compensation value ACV1' with respect to a pixel having a degradation amount (e.g., a predetermined degradation amount) DA upon receiving a first brightness level input, the first additional compensation value ACV1' being a positive value. The display device may determine a second additional compensation value ACV2' with respect to a pixel having a degradation amount (e.g., a predetermined degradation amount) DA upon receiving a second brightness level input, the second additional compensation value ACV2' being a positive value and having an absolute value greater than that of the first additional compensation value ACV1'. Therefore, upon receiving the first brightness level input, the luminance of the pixel may be increased by a first luminance increase amount LI1 by the first additional compensation value ACV1', and thus may become substantially equal to the initial luminance IL. In addition, upon receiving the second brightness level input, the luminance of the pixel may be increased by a second luminance increase amount LI2 greater than the first luminance increase amount LI1 by the second additional compensation value ACV2', and thus may become substantially equal to the initial luminance IL. Therefore, the luminances 560 and 570 of the under-compensated region may become a luminance 580 substantially the same as the initial luminance IL.

[0076] Once the additional compensation value for each pixel in the miscompensation area (e.g., over-compensation area and / or under-compensation area) is determined, the display device may re-perform the image sticking compensation operation on the test data based on the image sticking compensation data and based on the additional compensation value (S170). The display device may display the corrected test image based on the test data on which the image sticking compensation operation is re-performed (S175). The display device may receive a visibility evaluation input for the corrected test image from a user (S180). If the visibility evaluation input indicates that the corrected test image has good visibility (approval), the display device may store the additional compensation value for each pixel in the miscompensation area (S190). Alternatively, when the visibility evaluation input indicates that the corrected test image has poor visibility (unapproved), the display device may receive the miscompensation area input, the relative brightness input, and the brightness level input from the user again (S120, S130, and S135), and may re-determine the additional compensation value for each pixel in the miscompensation area (S140').

[0077] As described above, in the method for compensating for image sticking in a display device according to an embodiment, an input of a miscompensation region, a relative brightness input, and a brightness level input can be received from a user, and an additional compensation value for a pixel in the miscompensation region can be determined based on the degradation amount of each pixel, based on the miscompensation region input, based on the relative brightness input, and based on the brightness level input. Therefore, image sticking can be removed or reduced in the display device, and the image quality of the display device can be improved.

[0078] Fig.10is a block diagram illustrating an electronic device including a display device according to an embodiment.

[0079] Reference Fig.10 , the electronic device 1000 according to the embodiment may include a main processor 1010, an input device 1020, and a display device 1030. The display device 1030 may include a display panel 1040 and a panel driver 1050, the display panel 1040 includes a plurality of pixels PX, and the panel driver 1050 drives the display panel 1040. In some embodiments, the panel driver 1050 may include: a data driver 1060, the data driver 1060 provides a data signal DS to the plurality of pixels PX; a scan driver 1070, the scan driver 1070 provides a scan signal SS to the plurality of pixels PX; a stress data memory 1082, the stress data memory 1082 stores stress data SD; an image sticking compensation memory 1084, the image sticking compensation memory 1084 stores image sticking compensation data ISCD; an additional compensation memory 1086, the additional compensation memory 1086 stores an additional compensation value ACV for each pixel PX in the miscompensation area; and a controller 1090, the controller 1090 controls the operation of the display device 1030.

[0080] The main processor 1010 may control the overall operation of the electronic device 1000. According to an embodiment, the main processor 1010 may be an application processor (AP) including a graphics processing unit (GPU), a central processing unit (CPU), a microprocessor, etc. The main processor 1010 may generate input image data IDAT and a control signal CTRL, and may provide the input image data IDAT and the control signal CTRL to the display device 1030. In addition, the main processor 1010 may receive an error compensation area input MCRI, a relative brightness input RBI, a visibility evaluation input VEI, and / or a brightness level input BLI from the input device 1020.

[0081] The input device 1020 may receive an error compensation area input MCRI indicating an error compensation area in a test image from a user, may receive a relative brightness input RBI indicating whether the error compensation area is brighter or darker than the remaining areas except the error compensation area from a user, and may receive a visibility evaluation input VEI for a corrected test image corrected based on an additional compensation value ACV from a user. In some embodiments, the input device 1020 may also receive a brightness level input BLI indicating a brightness level or a darkness level of the error compensation area from a user. The error compensation area input MCRI, the relative brightness input RBI, the visibility evaluation input VEI, and / or the brightness level input BLI may be provided by the input device 1020 (via the main processor 1010) to the display device 1030. The input device 1020 may be any input device that receives the error compensation area input MCRI, the relative brightness input RBI, the visibility evaluation input VEI, and / or the brightness level input BLI. For example, when the electronic device 1000 is a television, the input device 1020 may be but is not limited to a remote control; when the electronic device 1000 is a personal computer (such as a laptop computer), the input device 1020 may be but is not limited to a mouse; when the display device 1030 includes a touch screen, the input device 1020 may be but is not limited to a touch screen; and so on.

[0082] The display panel 1040 may include a plurality of data lines, a plurality of scan lines, and a plurality of pixels PX connected to the plurality of data lines and the plurality of scan lines. In some embodiments, each pixel PX may include a light-emitting element, and the display panel 1040 may be a light-emitting display panel. For example, the light-emitting element may be an organic light-emitting diode (OLED), a nano-light-emitting diode (nano-LED), a quantum dot (QD) light-emitting diode, a micro light-emitting diode, an inorganic light-emitting diode, or any other suitable light-emitting element.

[0083] The data driver 1060 may generate a data signal DS based on the data control signal DCTRL, and may output the image data ODAT received from the controller 1090, and may provide the data signal DS to a plurality of pixels PX through a plurality of data lines. In some embodiments, the data control signal DCTRL may include, but is not limited to, an output data enable signal, a horizontal start signal, and a load signal. In some embodiments, the data driver 1060 and the controller 1090 may be implemented as a single integrated circuit, and the single integrated circuit may be referred to as a timing controller embedded data driver (TED) integrated circuit. In other embodiments, the data driver 1060 and the controller 1090 may be implemented as separate integrated circuits.

[0084] The scan driver 1070 may generate a scan signal SS based on a scan control signal SCTRL received from the controller 1090, and may provide the scan signal SS to a plurality of pixels PX through a plurality of scan lines. In some embodiments, the scan control signal SCTRL may include, but is not limited to, a start signal, a clock signal, etc. In addition, in some embodiments, the scan driver 1070 may be integrated or formed in the display panel 1040. In other embodiments, the scan driver 1070 may be implemented as one or more integrated circuits.

[0085] The stress data memory 1082 may store stress data SD representing the degradation amount of each pixel PX. For example, the controller 1090 may generate stress data SD by accumulating input image data IDAT (or output image data ODAT), and may store the stress data SD in the stress data memory 1082. The image residual compensation memory 1084 may store image residual compensation data ISCD representing a compensation value according to the degradation amount of each pixel PX. For example, the compensation value represented by the image residual compensation data ISCD may increase as the degradation amount increases. The additional compensation memory 1086 may store an additional compensation value ACV for each pixel PX in the miscompensation area. The additional compensation value ACV may be obtained by referring to the above. Figure 1 and Figure 7 In some embodiments, each of the stress data memory 1082 , the image sticking compensation memory 1084 , and the additional compensation memory 1086 may be located inside the controller 1090 or outside the controller 1090 .

[0086] The controller 1090 (e.g., a timing controller (T-CON)) may receive input image data IDAT and a control signal CTRL from the main processor 1010. The control signal CTRL may include, but is not limited to, a vertical synchronization signal, a horizontal synchronization signal, an input data enable signal, and a main clock signal. In some embodiments, the controller 1090 may further receive an error compensation region input MCRI, a relative brightness input RBI, a visibility evaluation input VEI, and / or a brightness level input BLI from the input device 1020 through the main processor 1010. The controller 1090 may perform an image retention compensation operation on the input image data IDAT based on the stress data SD, the image retention compensation data ISCD, and / or the additional compensation value ACV to generate the output image data ODAT. For example, in order to generate the output image data ODAT, the controller 1090 may determine the degradation amount of each pixel PX based on the stress data SD, may add the compensation value corresponding to the degradation amount represented by the image retention compensation data ISCD to the gray level represented by the input image data IDAT, and / or may further increase the additional compensation value ACV relative to each pixel PX in the error compensation region. In addition, the controller 1090 may generate a data control signal DCTRL and a scan control signal SCTRL based on the control signal CTRL. The controller 1090 may control the data driver 1060 by providing the output image data ODAT and the data control signal DCTRL to the data driver 1060, and may control the scan driver 1070 by providing the scan control signal SCTRL to the scan driver 1070.

[0087] In the electronic device 1000 according to the embodiment, the operation of determining the additional compensation value ACV can be performed by the image sticking compensation correction input of the user. In response to the image sticking compensation correction input, the panel driver 1050 can perform an image sticking compensation operation on the test data based on the image sticking compensation data ISCD, and can drive the display panel 1040 to display a test image based on the test data on which the image sticking compensation operation is performed. The input device 1020 can receive an error compensation area input MCRI representing the error compensation area in the test image from the user, and can receive a relative brightness input RBI indicating whether the error compensation area is brighter or darker than the remaining areas except the error compensation area from the user. The panel driver 1050 can determine the additional compensation value ACV for each pixel PX in the error compensation area based on the degradation amount of the pixel PX in the error compensation area, based on the error compensation area input MCRI, and based on the relative brightness input RBI. In some embodiments, the panel driver 1050 can determine that the error compensation area is an over-compensation area when the relative brightness input RBI indicates that the error compensation area is brighter than the remaining areas, and can determine that the error compensation area is an under-compensation area when the relative brightness input RBI indicates that the error compensation area is darker than the remaining areas. The additional compensation value ACV for each pixel PX in the over-compensation area may be a negative value, and the additional compensation value ACV for each pixel PX in the under-compensation area may be a positive value. In some embodiments, the absolute value of the additional compensation value ACV for each pixel PX in the miscompensation area may increase as the amount of degradation of each pixel increases. In addition, in some embodiments, the panel driver 1050 may further receive a brightness level input BLI representing the brightness level or darkness level of the miscompensation area from the user. For example, the absolute value of the additional compensation value ACV for each pixel PX in the miscompensation area may increase as the brightness level input BLI increases.

[0088] As described above, in the electronic device 1000 according to an embodiment of the present disclosure, the miscompensation region input MCRI and the relative brightness input RBI may be received from the user, and the additional compensation value ACV for each pixel PX in the miscompensation region may be determined based on the degradation amount of the pixel PX, the miscompensation region input MCRI, and the relative brightness input RBI. Therefore, image sticking may be removed or reduced in the display device 1030, and the image quality of the display device 1030 may be improved.

[0089] According to an embodiment, the electronic device 1000 may be any electronic device including a display device 1030, such as a mobile phone, a smart phone, a television (TV) (e.g., a digital TV, a 3D TV, etc.), a personal computer (PC) (such as a tablet personal computer and a laptop computer), a home appliance, a personal digital assistant (PDA), a portable multimedia player (PMP), a digital camera, a music player, a portable game console, a navigation device, etc.

[0090] Fig.11 is a block diagram illustrating an example of an electronic device according to an embodiment.

[0091] Reference Fig.11 , the electronic device 2101 can output various information via the display module 2140 in the operating system. When the processor 2110 executes the application stored in the memory 2120, the display module 2140 can provide the user with application information via the display panel 2141.

[0092] The processor 2110 may obtain external input via the input module 2130 or the sensor module 2161, and may execute an application corresponding to the external input. For example, when a user selects a camera icon displayed in the display panel 2141, the processor 2110 may obtain user input via the input sensor 2161-2 and may activate the camera module 2171. The processor 2110 may transmit image data corresponding to an image captured by the camera module 2171 to the display module 2140. The display module 2140 may display an image corresponding to the captured image via the display panel 2141.

[0093] As another example, when personal information authentication is performed in the display module 2140, the fingerprint sensor 2161-1 may acquire input fingerprint information as input data. The processor 2110 may compare the input data acquired by the fingerprint sensor 2161-1 with the authentication data stored in the memory 2120, and may execute an application program according to the comparison result. The display module 2140 may display information executed according to the application program logic via the display panel 2141.

[0094] As yet another example, when a music streaming icon displayed in the display module 2140 is selected, the processor 2110 obtains a user input via the input sensor 2161-2 and may activate a music streaming application stored in the memory 2120. When a music execution command is input in the music streaming application, the processor 2110 may activate the sound output module 2163 to provide the user with sound information corresponding to the music execution command.

[0095] In the above, the operation of the electronic device 2101 has been briefly described. Hereinafter, the configuration of the electronic device 2101 will be described in detail. Some components of the electronic device 2101 described below may be integrated and provided as one component, or one component may be provided separately as two or more components.

[0096] Reference Fig.11 , the electronic device 2101 may communicate with the external electronic device 2102 via a network (e.g., a short-range wireless communication network or a long-range wireless communication network). In some embodiments, the electronic device 2101 may include a processor 2110, a memory 2120, an input module 2130, a display module 2140, a power management module 2150, an internal module 2160, and an external module 2170. In some embodiments, at least one of the components may be omitted from the electronic device 2101, or one or more other components may be added to the electronic device 2101. In some embodiments, some of the components (e.g., the sensor module 2161, the antenna module 2162, or the sound output module 2163) may be implemented as a single component (e.g., the display module 2140).

[0097] The processor 2110 may execute software to control at least one other component (e.g., hardware or software component) of the electronic device 2101 coupled to the processor 2110, and may perform various data processing or calculations. According to some embodiments, as at least part of the data processing or calculation, the processor 2110 may store a command or data received from another component (e.g., the input module 2130, the sensor module 2161, or the communication module 2173) in the volatile memory 2121, may process the command or data stored in the volatile memory 2121, and may store the result data in the non-volatile memory 2122.

[0098] The processor 2110 may include a main processor 2111 and an auxiliary processor 2112. The main processor 2111 may include one or more of a central processing unit (CPU) 2111-1 and an application processor (AP). The main processor 2111 may also include any one or more of a graphics processing unit (GPU) 2111-2, a communication processor (CP), and an image signal processor (ISP). The main processor 2111 may also include a neural processing unit (NPU) 2111-3. NPU 2111-3 may be a processor that specifically processes an artificial intelligence model, and the artificial intelligence model may be generated by machine learning. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q network, or a combination of two or more thereof, but is not limited thereto. In addition to the hardware structure, the artificial intelligence model may also additionally or alternatively include a software structure. At least two of the above-mentioned processing units and processors may be implemented as an integrated component (eg, a single chip), or the respective processing units and processors may be implemented as separate components (eg, a plurality of chips).

[0099] The auxiliary processor 2112 may include a controller. The controller may include an interface conversion circuit and a timing control circuit. The controller may receive an image signal from the main processor 2111, may convert the data format of the image signal to meet the interface specification with the display module 2140, and may output the image data. The controller may output various control signals for driving the display module 2140.

[0100] The auxiliary processor 2112 may also include a data conversion circuit 2112-2, a gamma correction circuit 2112-3, or a rendering circuit 2112-4, etc. The data conversion circuit 2112-2 may receive image data from the controller. The data conversion circuit 2112-2 may compensate the image data so that an image is displayed with a desired luminance according to the characteristics of the electronic device 2101 or the user's setting, or may convert the image data to reduce power consumption or eliminate afterimages. The gamma correction circuit 2112-3 may convert image data or a gamma reference voltage so that an image displayed in the electronic device 2101 has a desired gamma characteristic. The rendering circuit 2112-4 may receive image data from the controller, and may render the image data in consideration of the pixel arrangement of the display panel 2141 in the electronic device 2101. At least one of the data conversion circuit 2112-2, the gamma correction circuit 2112-3, and the rendering circuit 2112-4 may be integrated into another component (e.g., the main processor 2111 or the controller). At least one of the data conversion circuit 2112 - 2 , the gamma correction circuit 2112 - 3 , and the rendering circuit 2112 - 4 may be integrated in a data driver 2143 described below.

[0101] The memory 2120 may store various data used by at least one component of the electronic device 2101 (e.g., the processor 2110 or the sensor module 2161). The various data may include, for example, input data or output data for commands related to the various data. The memory 2120 may include at least one of a volatile memory 2121 and a non-volatile memory 2122.

[0102] The input module 2130 may receive commands or data from outside the electronic device 2101 (eg, a user or an external electronic device 2102 ) to be used by a component of the electronic device 2101 (eg, the processor 2110 , the sensor module 2161 , or the sound output module 2163 ).

[0103] The input module 2130 may include a first input module 2131 for receiving commands or data from a user and a second input module 2132 for receiving commands or data from an external electronic device 2102. The first input module 2131 may include a microphone, a mouse, a keyboard, a key (e.g., a button) or a pen (e.g., a passive pen or an active pen). The second input module 2132 may support a specified protocol that can connect the electronic device 2101 to the external electronic device 2102 in a wired or wireless manner. In some embodiments, the second input module 2132 may include a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital card interface, or an audio interface. The second input module 2132 may include a connector that can physically connect the electronic device 2101 to the external electronic device 2102. For example, the second input module 2132 may include an HDMI connector, a USB connector, a secure digital card connector, or an audio connector (e.g., a headphone connector).

[0104] The display module 2140 may visually provide information to the user. The display module 2140 may include a display panel 2141, a scan driver 2142, and a data driver 2143. The display module 2140 may further include a window, a base, and / or a bracket for protecting the display panel 2141.

[0105] The display panel 2141 may include a liquid crystal display panel, an organic light emitting display panel, or an inorganic light emitting display panel, but the type of the display panel 2141 is not limited thereto. The display panel 2141 may be a rigid type display panel or a flexible type display panel that can be rolled or folded. The display module 2140 may further include a support, a bracket, or a heat dissipation member that supports the display panel 2141.

[0106] The scan driver 2142 may be mounted on the display panel 2141 as a driving chip. Alternatively, the scan driver 2142 may be integrated into the display panel 2141. For example, the scan driver 2142 may include an amorphous silicon thin film transistor (TFT) gate driver circuit (ASG), a low temperature polysilicon (LTPS) TFT gate driver circuit, or an oxide semiconductor TFT gate driver circuit (OSG) embedded in the display panel 2141. The scan driver 2142 may receive a control signal from the controller, and may output a scan signal to the display panel 2141 in response to the control signal.

[0107] The display panel 2141 may further include an emission driver. The emission driver may output an emission control signal to the display panel 2141 in response to a control signal received from the controller. The emission driver may be formed separately from the scan driver 2142 or may be integrated into the scan driver 2142.

[0108] The data driver 2143 may receive a control signal from the controller, may convert the image data into an analog voltage (eg, a data voltage) in response to the control signal, and may then output the data voltage to the display panel 2141 .

[0109] The data driver 2143 may be incorporated into other components (eg, a controller). In addition, the functions of the interface conversion circuit and the timing control circuit of the controller described above may be integrated into the data driver 2143.

[0110] The display module 2140 may further include an emission driver or a voltage generator circuit, etc. The voltage generator circuit may output various voltages for driving the display panel 2141 .

[0111] The power management module 2150 may supply power to the components of the electronic device 2101. The power management module 2150 may include a battery that charges the power supply voltage. The battery may include a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. The power management module 2150 may include a power management integrated circuit (PMIC). The PMIC may supply appropriate power to each of the modules described above and the modules described below. The power management module 2150 may include a wireless power transmission / reception component electrically connected to the battery. The wireless power transmission / reception component may include a plurality of antenna radiators in the form of a coil.

[0112] The electronic device 2101 may further include an internal module 2160 and an external module 2170. The internal module 2160 may include a sensor module 2161, an antenna module 2162 and / or a sound output module 2163. The external module 2170 may include a camera module 2171, an optical module 2172 and / or a communication module 2173.

[0113] The sensor module 2161 may detect an input through the user's body or an input through the pen of the first input module 2131, and may generate an electrical signal or data value corresponding to the input. The sensor module 2161 may include at least one of a fingerprint sensor 2161-1, an input sensor 2161-2, and a digitizer 2161-3.

[0114] The fingerprint sensor 2161-1 may generate a data value corresponding to the user's fingerprint. The fingerprint sensor 2161-1 may include any one of an optical fingerprint sensor and a capacitive fingerprint sensor.

[0115] The input sensor 2161-2 may generate a data value corresponding to coordinate information of a user's body input or a pen input. The input sensor 2161-2 may convert a capacitance change caused by the input into a data value. The input sensor 2161-2 may detect an input through a passive pen, or may send / receive data to / from an active pen.

[0116] The input sensor 2161-2 can measure bio-signals such as blood pressure, moisture, or body fat. For example, when a part of the user's body touches the sensor layer or the sensing panel and does not move for a certain period of time, the input sensor 2161-2 can output the user's desired information to the display module 2140 by detecting the bio-signal based on the electric field change caused by the part of the body.

[0117] The digitizer 2161-3 may generate a data value corresponding to the coordinate information of the input through the pen. The digitizer 2161-3 may convert the amount of electromagnetic change caused by the input into a data value. The digitizer 2161-3 may detect the input through the passive pen, or may send / receive data to / from the active pen.

[0118] At least one of the fingerprint sensor 2161-1, the input sensor 2161-2, and the digitizer 2161-3 may be implemented as a sensor layer formed on the display panel 2141 through a continuous process. The fingerprint sensor 2161-1, the input sensor 2161-2, and / or the digitizer 2161-3 may be located above the display panel 2141, or at least one of the fingerprint sensor 2161-1, the input sensor 2161-2, and the digitizer 2161-3 may be located below the display panel 2141.

[0119] Two or more of the fingerprint sensor 2161-1, the input sensor 2161-2, and the digitizer 2161-3 may be integrated into one sensing panel through the same process. When integrated into one sensing panel, the sensing panel may be located between the display panel 2141 and a window located above the display panel 2141. In some embodiments, the sensing panel may be located on the window, but the location of the sensing panel is not limited thereto.

[0120] At least one of the fingerprint sensor 2161-1, the input sensor 2161-2, and the digitizer 2161-3 may be embedded in the display panel 2141. In other words, at least one of the fingerprint sensor 2161-1, the input sensor 2161-2, and the digitizer 2161-3 may be formed at the same time or substantially simultaneously by a process of forming an element (e.g., a light emitting element, a transistor, etc.) included in the display panel 2141.

[0121] In addition, the sensor module 2161 may generate an electrical signal or a data value corresponding to an internal state or an external state of the electronic device 2101. The sensor module 2161 may also include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0122] The antenna module 2162 may include one or more antennas for transmitting signals or power to the outside or receiving signals or power from the outside. In some embodiments, the communication module 2173 may transmit signals to the external electronic device 2102 or receive signals from the external electronic device 2102 through an antenna suitable for the communication method. The antenna pattern of the antenna module 2162 may be integrated into a component of the display module 2140 (e.g., the display panel 2141) or the input sensor 2161-2.

[0123] The sound output module 2163 can output sound signals to the outside of the electronic device 2101. The sound output module 2163 may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as playing multimedia or playing recordings. The receiver may be used to receive incoming calls. In some embodiments, the receiver may be implemented separately from the speaker or may be implemented as part of the speaker. The sound output pattern of the sound output module 2163 may be integrated into the display module 2140.

[0124] The camera module 2171 can capture still images and moving images. In some embodiments, the camera module 2171 may include one or more lenses, image sensors, or image signal processors. The camera module 2171 may also include an infrared camera capable of measuring the presence or absence of a user, the position of a user, and / or the line of sight of a user.

[0125] The light module 2172 may provide light. The light module 2172 may include a light emitting diode or a xenon lamp. The light module 2172 may operate in conjunction with the camera module 2171 or may operate independently of the camera module 2171.

[0126] The communication module 2173 may support establishing a wired or wireless communication channel between the electronic device 2101 and the external electronic device 2102 and performing communication via the established communication channel. The communication module 2173 may include a wireless communication module (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). The communication module 2173 may communicate via a short-range communication network (e.g., Bluetooth ( The communication module 2173 may communicate with the external electronic device 2102 via a wireless communication network (e.g., a cellular network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))) or a long-distance communication network (e.g., a cellular network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules 2173 may be implemented as a single chip, or may be implemented as multiple chips independent of each other.

[0127] The input module 2130 , the sensor module 2161 , the camera module 2171 , and the like may be used to control the operation of the display module 2140 together with the processor 2110 .

[0128] The processor 2110 may output a command or data to the display module 2140, the sound output module 2163, the camera module 2171, or the optical module 2172 based on the input data received from the input module 2130. For example, the processor 2110 may generate image data corresponding to the input data applied by a mouse or an active pen, and may output the image data to the display module 2140. Alternatively, the processor 2110 may generate command data corresponding to the input data, and may output the command data to the camera module 2171 or the optical module 2172. When input data is not received from the input module 2130 for a certain period of time, the processor 2110 may switch the operation mode of the electronic device 2101 to a low power mode or a sleep mode, thereby reducing the power consumption of the electronic device 2101.

[0129] The processor 2110 may output a command or data to the display module 2140, the sound output module 2163, the camera module 2171, or the optical module 2172 based on the sensing data received from the sensor module 2161. For example, the processor 2110 may compare the authentication data applied by the fingerprint sensor 2161-1 with the authentication data stored in the memory 2120, and then may execute an application program according to the comparison result. The processor 2110 may execute a command or output corresponding image data to the display module 2140 based on the sensing data sensed by the input sensor 2161-2 or the digitizer 2161-3. In the case where the sensor module 2161 includes a temperature sensor, the processor 2110 may receive temperature data from the sensor module 2161, and may further perform luminance correction on the image data based on the temperature data.

[0130] The processor 2110 may receive measurement data about the presence or absence of a user, the position of the user, and / or the line of sight of the user from the camera module 2171. The processor 2110 may further perform luminance correction on the image data based on the measurement data. For example, after the processor 2110 determines the presence or absence of a user based on the input from the camera module 2171, the data conversion circuit 2112-2 or the gamma correction circuit 2112-3 may perform luminance correction on the image data, and the processor 2110 may provide the luminance-corrected image data to the display module 2140.

[0131] At least some of the components described above may be coupled to each other and transmit signals (e.g., commands or data) therebetween via an inter-peripheral communication scheme (e.g., a bus, a general purpose input and output (GPIO), a serial peripheral interface (SPI), a mobile industry processor interface (MIPI), or an ultra-path interconnect (UPI)). The processor 2110 may communicate with the display module 2140 via an agreed interface. In addition, any of the above-mentioned communication methods may be used between the processor 2110 and the display module 2140, but the communication method between the processor 2110 and the display module 2140 is not limited to the above-mentioned communication methods.

[0132] The electronic device 2101 according to various embodiments described above may be various types of devices. For example, the electronic device 2101 may include at least one of a TV (e.g., digital TV, 3D TV), a mobile phone, a smart phone, a personal computer (PC) (such as a tablet computer and a laptop computer), a home appliance, a personal digital assistant (PDA), a portable multimedia player (PMP), a digital camera, a music player, a portable game console, and a navigation device.

[0133] The foregoing is an illustration of the embodiments and is not to be construed as limiting thereof. Although several embodiments have been described, it will be readily appreciated by those skilled in the art that many modifications may be made in the embodiments without substantially departing from the novel teachings and aspects of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. Therefore, it will be understood that the foregoing is an illustration of various embodiments and is not to be construed as being limited to the specific embodiments disclosed, and modifications to the disclosed embodiments as well as other embodiments are intended to be included within the scope of the appended claims.

Claims

1. A method for compensating for image sticking in a display device, wherein: The method comprises: storing image sticking compensation data, the image sticking compensation data indicating a compensation value according to a degradation amount of a pixel; performing an image sticking compensation operation on the test data based on the image sticking compensation data; Displaying a test image based on the test data; receiving an error compensation region input, wherein the error compensation region input represents an error compensation region in the test image; receiving a relative brightness input, the relative brightness input indicating whether the miscompensated area is brighter or darker than remaining areas of the test image excluding the miscompensated area; and An additional compensation value for the pixel in the miscompensation area is determined based on the degradation amount of the pixel in the miscompensation area, based on the miscompensation area input, and based on the relative brightness input.

2. The method according to claim 1, wherein: The method further includes determining that the miscompensated region is an overcompensated region based on the relative brightness input indicating that the miscompensated region is brighter than the remaining regions.

3. The method according to claim 2, wherein: The additional compensation value for the pixels in the overcompensated area is a negative value.

4. The method according to claim 2, wherein: An absolute value of the additional compensation value for the pixel in the overcompensation region increases as the degradation amount of the pixel increases.

5. The method according to claim 2, wherein: The determining the additional compensation value for the pixel in the miscompensated area comprises: determining a first additional compensation value for a first pixel having a first amount of degradation in the overcompensated region; and determining a second additional compensation value for a second pixel in the overcompensated region having a second degradation amount greater than the first degradation amount, wherein the first additional compensation value and the second additional compensation value are negative values, and The absolute value of the second additional compensation value is greater than the absolute value of the first additional compensation value.

6. The method according to claim 1, wherein: The method further includes determining that the miscompensated region is an undercompensated region based on the relative brightness input indicating that the miscompensated region is darker than the remaining regions.

7. The method according to claim 6, wherein: The determining the additional compensation value for the pixel in the miscompensated area comprises: determining a first additional compensation value for a first pixel having a first amount of degradation in the undercompensated region; and determining a second additional compensation value for a second pixel in the under-compensated area having a second degradation amount greater than the first degradation amount, wherein the first additional compensation value and the second additional compensation value are positive values, and The absolute value of the second additional compensation value is greater than the absolute value of the first additional compensation value.

8. The method according to claim 1, wherein: The method further comprises: re-performing the image sticking compensation operation on the test data based on the image sticking compensation data and based on the additional compensation value; displaying a corrected test image based on the test data on which the image sticking compensation operation is re-performed; and A visibility assessment input for the corrected test image is received.

9. A method for compensating for image sticking in a display device, wherein: The method comprises: storing image sticking compensation data, the image sticking compensation data indicating a compensation value according to a degradation amount of a pixel; performing an image sticking compensation operation on the test data based on the image sticking compensation data; Displaying a test image based on the test data; receiving an error compensation region input, wherein the error compensation region input represents an error compensation region in the test image; receiving a relative brightness input, the relative brightness input indicating whether the miscompensated area is brighter or darker than other areas of the test image except the miscompensated area; receiving a brightness level input, the brightness level input representing a brightness level or a darkness level of the miscompensated area; and An additional compensation value for the pixel in the miscompensation area is determined based on the degradation amount of the pixel in the miscompensation area, based on the miscompensation area input, based on the relative brightness input, and based on the brightness level input.

10. An electronic device, wherein: The electronic device comprises: input device; and A display device, the display device comprising: display panel; and a panel driver configured to drive the display panel, the panel driver configured to store image sticking compensation data representing compensation values ​​according to degradation amounts of pixels of the display panel, the panel driver configured to perform an image sticking compensation operation on test data based on the image sticking compensation data, and the panel driver configured to drive the display panel to display a test image based on the test data, wherein the input device is configured to receive an error compensation area input representing an error compensation area in the test image, and the input device is configured to receive a relative brightness input representing whether the error compensation area is brighter or darker than other areas in the test image except the error compensation area, and Wherein, the panel driver is configured to determine an additional compensation value for the pixel in the miscompensation area based on the degradation amount of the pixel in the miscompensation area, based on the miscompensation area input and based on the relative brightness input.

Images