Display device and electronic device

Abstract

A display device and an electronic device are provided. The display device includes: a display panel that displays an image with a plurality of pixels in a display area; a scan driver that supplies a compensation gate scan signal to the plurality of pixels in units of horizontal lines through the compensation gate lines; a data driver that detects a pixel driving current value output from the plurality of pixels by compensating the gate scan signal, generates a data voltage according to the compensated image data, and supplies the data voltage to a data line of the display area; and a display driver that divides the display area into a plurality of block areas, sets a compensation gain value for each of the plurality of block areas using a pixel driving current value, corrects the image data with the compensation gain value, and supplies the corrected image data to the data driver, the display driver generates compensated image data using the compensation gain value for each of the plurality of block regions.

Description

Technical Field

[0001] Aspects of some embodiments of the present disclosure relate to a display device and an electronic device. Background Art

[0002] With the development of the information society, consumers' demands for display devices for displaying images have increased and diversified. For example, display devices can be applied to various electronic devices such as smartphones, digital cameras, laptop computers, navigation devices, and smart TVs.

[0003] The display device may be a flat panel display device such as a liquid crystal display device, a field emission display device, or an organic light-emitting display device. In such flat panel display devices, since each of the plurality of pixels of the display panel includes a light-emitting element that can emit light by itself, the light-emitting display device can display an image without a backlight unit that provides light to the display panel.

[0004] A display device typically includes a display panel, which includes a plurality of pixels connected to data lines and scan signal lines, a scan driver that supplies scan signals to the scan signal lines, a data driver that supplies data voltages to the data lines, and a display driver that controls the driving timing of the scan driver and the driving timing of the data driver.

[0005] The scan driver can sequentially supply scan signals to the scan signal lines in units of horizontal periods, and the data driver can supply data voltages to the data lines in units of horizontal lines. The data driver can sense driving currents from a plurality of pixels, and the display driver can perform a control operation to compensate the data voltages using the current sensing data.

[0006] The above information disclosed in this Background section is only for enhancement of background understanding and therefore the information discussed in this Background section does not necessarily constitute prior art. Summary of the Invention

[0007] Aspects of some embodiments of the present disclosure include a display device capable of compensating image data by dividing an image display area into a plurality of block areas and correcting temperature data so that consistency of temperature data calculated for each block area can be relatively improved.

[0008] However, aspects of the embodiments of the present disclosure are not limited to the aspects set forth herein. The above and other aspects of the embodiments of the present disclosure will become more apparent to those skilled in the art by referring to the detailed description of the present disclosure given below.

[0009] According to some embodiments of the present disclosure, a display device includes: a display panel that displays an image by including a plurality of pixels arranged in a display area of ​​the display panel; a scan driver that supplies a compensation gate scan signal to the plurality of pixels in units of horizontal lines through compensation gate lines of the display area; a data driver that detects pixel driving current values ​​output from the plurality of pixels through the compensation gate scan signal, generates a data voltage according to compensated image data, and supplies the data voltage to the data lines of the display area; and a display driver that divides the display area into a plurality of block areas, sets a compensation gain value for each of the plurality of block areas using the pixel driving current value, corrects image data using the compensation gain value for each of the plurality of block areas, and supplies the corrected image data to the data driver, wherein the display driver generates compensated image data by compensating for a grayscale value or a brightness value of the image data for each of the plurality of block areas using the compensation gain value for each of the plurality of block areas.

[0010] According to some embodiments, a data driver senses pixel driving voltages and pixel driving currents for a plurality of pixels through voltage detection lines of a display area, generates current sensing data corresponding to the sensed amounts of pixel driving currents of the plurality of pixels, and transmits the current sensing data to a display driver.

[0011] According to some embodiments, the display driver divides the display area into preset N×M block areas, and divides the current sensing data in units of at least one frame for each of the N×M block areas to correspond to the N×M block areas, and calculates maximum temperature data and average temperature data for each of the N×M block areas to correspond to the maximum current sensing data and average current sensing data for each of the N×M block areas.

[0012] According to some embodiments of the present disclosure, a display device includes: a display panel that displays an image by including a plurality of pixels arranged in a display area of ​​the display panel; a scan driver that supplies a compensation gate scan signal to the plurality of pixels in units of horizontal lines through compensation gate lines of the display area; a data driver that detects pixel driving current values ​​output from the plurality of pixels through the compensation gate scan signal, generates a data voltage according to compensated image data, and supplies the data voltage to the data lines of the display area; and a display driver that divides the display area into a plurality of block areas, sets a compensation gain value for each of the plurality of block areas using the pixel driving current value, corrects image data using the compensation gain value for each of the plurality of block areas, and supplies the corrected image data to the data driver, wherein the display driver divides the display area into preset N×M block areas, and generates compensated image data by compensating and modulating the image data for each of the N×M block areas using the compensation gain value for each of the N×M block areas.

[0013] In the display device according to some embodiments of the present disclosure, it is possible to correct temperature data so that consistency of temperature data for each block area of ​​an image display area can be relatively improved, and compensate image data using the corrected temperature data.

[0014] For example, by compensating image data according to variations in temperature characteristics for each block area using corrected temperature data with improved consistency, it is possible to relatively improve afterimage detection error for each block area and relatively improve afterimage compensation performance.

[0015] Characteristics according to the embodiment of the present disclosure are not limited to the above-described characteristics, and various other characteristics are included in this specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other aspects and features according to embodiments of the present disclosure will become more apparent by describing aspects according to some embodiments of the present disclosure in more detail with reference to the accompanying drawings, in which:

[0017] Figure 1 is a plan view illustrating a configuration of a display device according to some embodiments of the present disclosure;

[0018] Figure 2 It is a detailed diagram Figure 1 a side sectional view of a display device;

[0019] Figure 3 It is an icon Figure 1 and Figure 2 A block diagram showing the electrical connection relationship between the display panel and the driver;

[0020] Figure 4 According to some embodiments Figure 3 An equivalent circuit diagram of a pixel of a display panel shown in FIG;

[0021] Figure 5 It is a detailed diagram Figure 3 Block diagram of the display driver;

[0022] Figure 6 is a flow chart illustrating a method of detecting and modulating temperature data for each block region according to some embodiments;

[0023] Figure 7 is a view illustrating a method of dividing and setting a display area into N×M block areas according to some embodiments;

[0024] Figure 8A and Figure 8B is a block diagram for describing a method of comparing average temperature data and maximum temperature data of any block area with each other;

[0025] Figure 9 is a graph used to describe the method of calculating and replacing the upper average temperature data of any block area;

[0026] Figure 10 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure;

[0027] Figure 11 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure;

[0028] Figure 12 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure; and

[0029] Figure 13 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0030] Aspects of some embodiments of the present disclosure will now be described more fully below with reference to the accompanying drawings, which illustrate aspects of some embodiments of the present disclosure. However, the present disclosure may be embodied in different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure will be more thorough and complete, and will more fully convey the scope of the embodiments according to the present disclosure to those skilled in the art.

[0031] It will also be understood that when a layer is referred to as being “on” another layer or substrate, it can be directly on the other layer or substrate, or intervening layers may also be present. Like reference numerals refer to like components throughout the specification.

[0032] It will be understood that although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, the first element discussed below may be referred to as the second element without departing from the teachings of the present disclosure. Similarly, the second element may also be referred to as the first element.

[0033] The features of the various embodiments of the present disclosure may be combined in part or in whole or in combination with each other, and various interlocks and drives in technology are possible. The various embodiments may be implemented independently of each other, or may be implemented in conjunction with each other.

[0034] Hereinafter, aspects of some embodiments will be described in more detail with reference to the accompanying drawings.

[0035] Figure 1 is a plan view illustrating the configuration of a display device according to some embodiments of the present disclosure. Figure 2 It is a detailed diagram Figure 1 A side sectional view of a display device.

[0036] refer to Figure 1 and Figure 2 The display device 10 according to some embodiments may be applied to portable electronic devices such as tablet personal computers (PCs), portable multimedia players (PMPs), navigation devices, ultra-mobile personal computers (UMPCs), e-books, electronic notebooks, mobile phones, smart phones, and mobile communication terminals. For example, the display device 10 may be applied as a display unit for a television, a laptop computer, a monitor, a billboard, or an Internet of Things (IoT) device.

[0037] The display device 10 according to some embodiments can be variously classified according to the display method. For example, the display device 10 may be, for example, a micro light-emitting diode (LED) display device (microLED), a nano LED display device (nanoLED), a liquid crystal display device (LCD), a plasma display panel (PDP), a field emission display device (FED), an electrophoretic display device (EPD), an organic light-emitting display device (OLED), an inorganic light-emitting display device (inorganic EL), a quantum dot light-emitting display device (QED), etc. In the following, an organic light-emitting display device (OLED) will be described as an example of the display device 10 according to some embodiments, and unless specifically distinguished, the organic light-emitting display device (OLED) according to some embodiments will be simply referred to as the display device 10. The display device 10 according to some embodiments is not limited to the organic light-emitting display device (OLED), and may be other display devices described above or known in the art without departing from the spirit and scope of the embodiments according to the present disclosure.

[0038] In a plan view, the display device 10 according to some embodiments may have a generally rectangular shape, a square shape, a circular shape, an elliptical shape, or a quadratic shape. For example, when the display device 10 is a mobile device such as a tablet personal computer, the display device 10 may have a rectangular shape with its long side in the horizontal direction. However, the embodiments of the present disclosure are not limited thereto, and the long side of the display device 10 may be in the vertical direction, or the display device 10 may be rotatably mounted so that the long side of the display device 10 can be variably positioned in the horizontal direction or the vertical direction.

[0039] The display device 10 includes a display panel 100 , a touch sensing unit TSU, first and second scan drivers 210 and 211 , a data driver 200 , and a display driver 400 .

[0040] The display panel 100 of the display device 10 includes a display unit DU configured to display an image, and a touch sensing unit TSU that senses a touch by a body part such as a finger, an electronic pen, etc. is located on the display panel 100. The display unit DU of the display panel 100 may include a plurality of pixels SP and display an image through the plurality of pixels SP. In addition, the touch sensing unit TSU may be mounted on a front surface portion of the display panel 100 or formed integrally with the display panel 100. Figure 1 and Figure 2 As shown in FIG, the display panel 100 includes a display unit DU, and the display unit DU includes a touch sensing unit TSU and a non-display area NDA. Such a touch sensing unit TSU may include a plurality of touch electrodes and senses a user's touch in a capacitive manner using the touch electrodes.

[0041] The first scan driver 210 supplies a gate scan signal to the pixels SP for each horizontal line via the gate line for each horizontal line of the display unit DU based on a first gate drive control signal from the display driver 400. The first scan driver 210 sequentially drives the pixels SP for each horizontal line by sequentially supplying the gate scan signal to the gate line for each horizontal line. Furthermore, the second scan driver 211 supplies a compensation gate scan signal to the compensation gate line for each horizontal line of the display unit DU based on a second gate drive control signal. The second scan driver 211 controls the pixel drive voltage of the corresponding pixel SP for each horizontal line by sequentially supplying the compensation gate scan signal to the compensation gate line for each horizontal line.

[0042] The data driver 200 may include a plurality of data driver integrated circuits. The data driver 200 outputs data voltages to the pixels SP of the display unit DU according to image data based on data drive control signals from the display driver 400. For example, the data driver integrated circuits may supply data voltages to data lines connected to corresponding pixels SP in units of horizontal lines per horizontal period.

[0043] The display driver 400 may operate as a main processor or may be formed integrally with the main processor. Thus, the display driver 400 may control the overall functions of the display device 10. For example, the display driver 400 sorts image data from the outside (e.g., from an external source) and supplies the image data to the data driver integrated circuit of the data driver 200, and controls the driving timing of the data driver 200. In addition, the display driver 400 controls the gate scan signal output timing of the first scan driver 210 and the compensation gate scan signal output timing of the second scan driver 211. In addition, the display driver 400 controls the data voltage output timing of the data driver integrated circuit included in the data driver 200 by generating a data control signal.

[0044] At the same time, the display driver 400 may detect touch coordinate information included in the touch data from the touch sensing unit TSU and then generate digital image data based on the touch coordinate information. Furthermore, the display driver 400 may execute an application indicated by an icon displayed at the user's touch coordinates. As another example, the display driver 400 may receive coordinate data from an electronic pen, etc., determine the touch coordinates of the electronic pen, and then generate digital image data based on the touch coordinates or execute an application indicated by an icon displayed at the touch coordinates of the electronic pen.

[0045] refer to Figure 2The display panel 100 can be divided into a main area MA and sub-areas SBA. The main area MA may include a display area DA containing pixels SP that display images, and a non-display area NDA arranged around the display area DA. In the display area DA, images can be displayed by emitting light from the emission area or opening area of ​​the corresponding pixel SP. To this end, the pixels SP in the display area DA may include a pixel circuit including a switching element, a pixel defining layer that defines the emission area or opening area, and a self-luminous element.

[0046] The non-display area NDA may be any outer area of ​​the display area DA or an area outside the display area DA (e.g., outside the periphery or coverage of the display area DA). The non-display area NDA may be defined as an edge area of ​​the main area MA of the display panel 100. The first and second scan drivers 210 and 211, the data driver 200, and fan-out lines connecting the display driver 400 and the display area DA may be formed in the non-display area NDA.

[0047] The sub-area SBA may extend from one side of the main area MA. The sub-area SBA may be formed as a film made of a flexible material that can be bent, folded, and rolled. For example, when the sub-area SBA is bent, the sub-area SBA may overlap with the main area MA in the thickness direction (Z-axis direction). The sub-area SBA may include the data driver 200 and a pad portion connected to the circuit board 300. Alternatively, the sub-area SBA may be omitted, and the data driver 200 and the pad portion may be located in the non-display area NDA.

[0048] The data driver 200 may be formed as a plurality of integrated circuits (ICs) and mounted on the display panel 100 using a chip-on-glass (COG) method, a chip-on-plastic (COP) method, and / or an ultrasonic bonding method. As an example, the data driver 200 may be located in the sub-region SBA and may overlap with the main region MA in the thickness direction (Z-axis direction) by bending the sub-region SBA. As another example, the data driver 200 may be mounted on the circuit board 300.

[0049] The circuit board 300 may be electrically connected to the pad portion of the display panel 100 through an anisotropic conductive film (ACF). To this end, the leads of the circuit board 300 may be electrically connected to the pad portion of the display panel 100. The circuit board 300 may be a flexible printed circuit board, a rigid printed circuit board, or a flexible film such as a chip on film.

[0050] Meanwhile, the display driver 400 may be mounted on the circuit board 300. The display driver 400 may be formed as an integrated circuit (IC).

[0051] Figure 3 It is an icon Figure 1 and Figure 2FIG. 4 is a block diagram showing the electrical connection relationship between the display panel and the driver.

[0052] refer to Figure 3 , a plurality of pixels SP are arranged in a matrix in the display area DA. In addition, a plurality of gate lines GL connected to the pixels SP of each horizontal line for each horizontal line and a plurality of compensation gate lines CL connected to the pixels SP of each horizontal line for each horizontal line are arranged in the display area DA and the non-display area NDA.

[0053] The plurality of gate lines GL and the plurality of compensation gate lines CL may extend in the X-axis direction as the first horizontal direction and may be spaced apart from each other in a first vertical direction intersecting the first horizontal direction. The plurality of gate lines GL and the plurality of compensation gate lines CL may be arranged at regular intervals in the first vertical direction.

[0054] The first scan driver 210 supplies a gate scan signal to the pixels SP for each horizontal line through the gate lines GL for each horizontal line based on the first gate driving control signal GCS1 from the display driver 400. The plurality of gate lines GL sequentially supplies the gate scan signal sequentially generated from the first scan driver 210 for each horizontal period to the plurality of pixels SP for each horizontal line.

[0055] The second scan driver 211 controls the corresponding pixels SP so that the pixel driving voltage and pixel driving current of the corresponding pixels SP are output to the corresponding voltage detection line VDL for each horizontal line. To this end, the second scan driver 211 sequentially supplies the compensation gate scan signal to the compensation gate line CL for each horizontal line based on the second gate drive control signal GCS2 from the display driver 400. The plurality of compensation gate lines CL sequentially supplies the compensation gate scan signal sequentially generated by the second scan driver 211 for each horizontal period to the plurality of pixels SP for each horizontal line.

[0056] The gate scanning signal of the first scanning driver 210 and the compensation gate scanning signal of the second scanning driver 211 may be alternately generated at different timings for each horizontal period. For example, the gate scanning signal may be first supplied to the gate line GL in units of each horizontal period, and the compensation gate scanning signal may be supplied to the compensation gate line CL in units of the next horizontal period.

[0057] In addition, a plurality of data lines DL connected to the pixels SP of each vertical line for each vertical line may be arranged in the display area DA and the non-display area NDA and may be electrically connected to the data driver 200. The data voltage may determine the emission brightness of each of the plurality of pixels SP. In addition, a plurality of voltage detection lines VDL connected to the pixels SP of each vertical line for each vertical line may be arranged in the display area DA and the non-display area NDA and may be electrically connected to the data driver 200. The pixels SP of each horizontal line share a pixel driving voltage with the corresponding voltage detection line VDL in response to a compensation gate scan signal input in units of horizontal periods. Therefore, the data driver 200 receives the pixel driving voltage and pixel driving current of the corresponding pixel SP in units of horizontal lines through the corresponding voltage detection line VDL.

[0058] For example, the data driver integrated circuit of the data driver 200 receives and senses the pixel driving voltage and the pixel driving current for the pixel SP in units of horizontal lines for each horizontal period through the corresponding voltage detection line VDL. As an example, the data driver integrated circuit may sequentially sense the pixel driving voltage and the pixel driving current received from the corresponding pixel SP in units of horizontal lines for each horizontal period.

[0059] The data driver integrated circuit generates voltage sensing data or current sensing data by performing analog-to-digital modulation according to the magnitude of the sensed pixel driving voltage and the amount of the sensed pixel driving current of the corresponding pixel SP. The data driver integrated circuit transmits the voltage sensing data and the current sensing data to the display driver 400 in units of at least one horizontal line.

[0060] The display driver 400 may receive digital image data RGB DATA and a timing synchronization signal from the outside. The display driver 400 controls the operation timing of the data driver 200 by generating a data drive control signal DCS based on the timing synchronization signal. In addition, the display driver 400 controls the operation timing of each of the first scan driver 210 and the second scan driver 211 by generating a first gate drive control signal GCS1 and a second gate drive control signal GCS2.

[0061] At the same time, the display driver 400 receives the voltage sensing data and the current sensing data in units of at least one horizontal line. In addition, the display driver 400 sorts and stores the voltage sensing data and the current sensing data in units of at least one frame. In this case, the display driver 400 may sort and store the voltage sensing data and the current sensing data in units of at least one frame to correspond to the pixel array resolution of the display area DA.

[0062] The display driver 400 may divide the display area DA into a preset N×M block area based on the pixel array resolution of the display area DA. Here, N and M are positive integers and may be the same or different. The display driver 400 divides the voltage sensing data and the current sensing data in units of at least one frame for each of the N×M block areas to correspond to the N×M block areas. Furthermore, the display driver 400 compares the current values ​​of the current sensing data for each of the N×M block areas and performs an averaging operation to calculate maximum current sensing data and average current sensing data for each of the N×M block areas.

[0063] The display driver 400 compares and analyzes the maximum current value included in the maximum current sensing data and the average current value included in the average current sensing data with the preset reference temperature data. In addition, the display driver 400 calculates the maximum temperature value and the average temperature value corresponding to the maximum current value and the average current value, respectively, as well as the maximum temperature data including the maximum temperature value and the average temperature data including the average temperature value (i.e., the maximum temperature data and the average temperature data for each of the N×M block areas).

[0064] The display driver 400 compares the average temperature data of each of the N×M block areas with the average temperature data of other adjacent block areas. Furthermore, based on the comparison results with the average temperature data of the adjacent block areas, the display driver 400 calculates and sets a compensation gain value corresponding to each average temperature data for the block areas whose maximum average temperature data has not been calculated among the plurality of adjacent block areas. On the other hand, in the case of a block area whose maximum average temperature data has been calculated among the plurality of adjacent block areas, the display driver 400 additionally compares the maximum temperature data of the block area with the maximum temperature data of other adjacent block areas.

[0065] Based on the comparison results between the maximum temperature data, when the maximum temperature data (or the maximum temperature value of the maximum temperature data) among the multiple block areas located adjacent to each other is not calculated as the maximum or highest, the display driver 400 calculates and sets the compensation gain value corresponding to the average temperature data. On the other hand, based on the comparison results between the maximum temperature data, when the maximum temperature data (or the maximum temperature value of the maximum temperature data) among the multiple block areas located adjacent to each other is calculated as the maximum or highest, the display driver 400 calculates the upper average temperature data for the temperature data higher than the average temperature data of the corresponding block area (i.e., the average temperature data or higher). In addition, the display driver 400 modulates or replaces the average temperature data of the corresponding block area whose maximum temperature data is calculated as the highest with the upper average temperature data, and calculates the compensation gain value corresponding to the upper average temperature data. Thereafter, the display driver 400 may calculate or update the compensation gain value for each of the N×M block areas in units of at least one frame interval.

[0066] The display driver 400 sorts the externally input digital image data RGB DATA in units of at least one frame according to the resolution of the display area DA. Furthermore, the display driver 400 divides the digital image data RGB DATA of each frame into N×M block areas and compensates and converts the corresponding digital image data RGB DATA corresponding to the N×M block areas using a compensation gain value for each of the N×M block areas. The display driver 400 sequentially supplies the compensated and converted image data DATA to the data driver integrated circuit of the data driver 200 in an amount corresponding to at least one horizontal line.

[0067] The data driver integrated circuit of the data driver 200 supplies a data voltage to the data line DL of the display unit DU according to the compensated and converted image data DATA based on the data drive control signal DCS. Here, the data driver integrated circuit may supply the data voltage to the data line DL to which the corresponding pixel SP is connected in units of horizontal lines according to each horizontal period.

[0068] Figure 4 According to some embodiments Figure 3 FIG. 8 is an equivalent circuit diagram of a pixel of a display panel shown in FIG.

[0069] refer to Figure 4 Each pixel SP may include: a first transistor STR and a driving transistor DTR for allowing the light emitting element LE to emit light, and a storage capacitor CST; and a compensation transistor CTR for transmitting the pixel driving voltage supplied to the light emitting element LE to the voltage detection line VDL. Figure 4Various components in the pixel SP are illustrated, but embodiments according to the present disclosure are not limited thereto, and according to some embodiments, the pixel SP may include additional components or fewer components without departing from the spirit and scope of embodiments according to the present disclosure.

[0070] The drive transistor DTR adjusts the amount of current flowing from the first power line VDD, to which the first source voltage is supplied, to the light-emitting element LE based on the voltage difference between its gate electrode and source electrode. The gate electrode of the drive transistor DTR may be connected to the second electrode of the first transistor STR, the first electrode of the drive transistor DTR may be connected to the first power line VDD, to which the first source voltage is applied, and the second electrode of the drive transistor DTR may be connected to the first electrode of the light-emitting element LE. The second electrode of the light-emitting element LE may be connected to the second power line VSS.

[0071] The first transistor STR is turned on by the gate scan signal of the gate line GL to supply the data voltage of the data line DL to the gate electrode of the driving transistor DTR. The gate electrode of the first transistor STR can be connected to any gate line GL, the first electrode of the first transistor STR can be connected to the data line DL, and the second electrode of the first transistor STR can be connected to the gate electrode of the driving transistor DTR.

[0072] The storage capacitor CST may be formed between the gate electrode of the driving transistor DTR and the second electrode of the driving transistor DTR. The storage capacitor CST stores a difference voltage between the gate voltage of the driving transistor DTR and the source voltage or the drain voltage of the driving transistor DTR.

[0073] The compensation transistor CTR is turned on by the compensation gate scan signal of the compensation gate line CL to electrically connect the first electrode of the light emitting element LE to any one of the voltage detection lines VDL. The pixel driving voltage may be supplied to the data driver 200 through the voltage detection line VDL.

[0074] The first transistor STR, the driving transistor DTR and the compensation transistor CTR may be formed as thin film transistors. Figure 4 , the first transistor STR, the driving transistor DTR, and the compensating transistor CTR are mainly illustrated as N-type metal oxide semiconductor field effect transistors (MOSFETs), but the embodiments of the present disclosure are not limited thereto. For example, the first transistor STR, the driving transistor DTR, and the compensating transistor CTR may be formed as P-type MOSFETs, or some of the first transistor STR, the driving transistor DTR, and the compensating transistor CTR may be formed as N-type MOSFETs, and the remaining transistors of the first transistor STR, the driving transistor DTR, and the compensating transistor CTR may be formed as P-type MOSFETs.

[0075] Figure 5It is a detailed diagram Figure 3 Block diagram of the display driver.

[0076] refer to Figure 5 The display driver 400 includes an image data output unit 401, a data control signal output unit 402, a gate control signal output unit 403, a sensing data sorting unit 404, a data dividing and sorting unit 405, a temperature data generating unit 406, a temperature data correction processing unit 407 and a compensation gain value generating unit 408.

[0077] The image data output unit 401 sorts digital image data RGB DATA from the outside in units of at least one frame according to the resolution of the display area DA and sequentially transmits the digital image data RGB DATA to the data driver 200 by an amount corresponding to at least one horizontal line.

[0078] In addition, the image data output unit 401 divides the digital image data RGB DATA into N×M block areas in units of each frame, and compensates and converts the corresponding digital image data RGB DATA corresponding to the N×M block areas using a compensation gain value for each of the N×M block areas. In addition, the image data output unit 401 sequentially supplies the compensated and converted image data DATA to the data driver integrated circuit of the data driver 200 in an amount corresponding to at least one horizontal line.

[0079] The data control signal output unit 402 generates a data drive control signal DCS for controlling the data voltage output timing of the data driver 200 (i.e., the data voltage modulation timing and the timing of supplying the data voltage to the data line DL) using a vertical timing synchronization signal and a horizontal timing synchronization signal input from an external graphics system, etc.

[0080] The gate control signal output unit 403 generates a first gate drive control signal GCS1 and a second gate drive control signal GCS2 using a vertical timing synchronization signal and a horizontal timing synchronization signal input from an external graphic system, etc. In addition, the gate control signal output unit 403 controls each of the driving timing of the first scan driver 210 and the driving timing of the second scan driver 211 by supplying the first gate drive control signal GCS1 and the second gate drive control signal GCS2 to the first scan driver 210 and the second scan driver 211, respectively.

[0081] The sensing data sorting unit 404 receives the voltage sensing data and current sensing data of the pixel SP in units of at least one horizontal period in an amount corresponding to at least one horizontal line through the data driver 200. Furthermore, the sensing data sorting unit 404 sorts and stores the voltage sensing data and current sensing data in units of at least one frame. In this case, the sensing data sorting unit 404 may sort and store the voltage sensing data and current sensing data in units of at least one frame to correspond to the pixel resolution of the display area DA.

[0082] The data division and sorting unit 405 divides the display area DA into preset N×M block areas based on the pixel resolution of the display area DA. The data division and sorting unit 405 divides and stores the voltage sensing data and the current sensing data in units of at least one frame for each of the N×M block areas to correspond to the N×M block areas.

[0083] The temperature data generation unit 406 compares the current values ​​of the current sensing data for each of the N×M block regions and performs an averaging operation to calculate maximum current sensing data and average current sensing data for each of the N×M block regions. Furthermore, the temperature data generation unit 406 compares and analyzes the maximum current value included in the maximum current sensing data and the average current value included in the average current sensing data with preset reference temperature data. The temperature data generation unit 406 calculates the maximum temperature value and the average temperature value corresponding to the maximum current value and the average current value, respectively, as well as the maximum temperature data including the maximum temperature value and the average temperature data including the average temperature value (i.e., the maximum temperature data and the average temperature data for each of the N×M block regions).

[0084] The temperature data correction processing unit 407 compares the average temperature data of each of the N×M block areas with the average temperature data of other block areas located adjacent to each other. In addition, based on the comparison result with the average temperature data of the adjacent block areas, the temperature data correction processing unit 407 transmits the average temperature data of the block area whose maximum average temperature data is not calculated as the maximum among the block areas located adjacent to each other to the compensation gain value generation unit 408.

[0085] On the other hand, in the case of a block region whose maximum average temperature data is calculated as the largest among a plurality of block regions positioned adjacent to each other, the temperature data correction processing unit 407 additionally compares the maximum temperature data of the block region with the maximum temperature data of other block regions positioned adjacent to each other. Based on the comparison result between the maximum temperature data, when the maximum temperature data (or the maximum temperature value of the maximum temperature data) among the plurality of block regions positioned adjacent to each other is not calculated, the temperature data correction processing unit 407 transmits the average temperature data of the corresponding block region to the compensation gain value generation unit 408.

[0086] On the other hand, based on the comparison result between the maximum temperature data, when the maximum temperature data (or the maximum temperature value of the maximum temperature data) among the plurality of block areas positioned adjacent to each other is calculated to be the largest or highest, the temperature data correction processing unit 407 calculates upper average temperature data for temperature data higher than the average temperature data of the corresponding block area (that is, the average temperature data or higher). In addition, the temperature data correction processing unit 407 modulates or replaces the average temperature data of the corresponding block area whose maximum temperature data is calculated to be the highest with the upper average temperature data, and transmits the upper average temperature data of the corresponding block area to the compensation gain value generation unit 408.

[0087] The compensation gain value generation unit 408 calculates and sets a compensation gain value corresponding to each average temperature data for the block region whose maximum average temperature data is not calculated by the temperature data correction processing unit 407 .

[0088] In addition, based on the comparison results between the maximum temperature data, the compensation gain value generation unit 408 calculates and sets the compensation gain value corresponding to each average temperature data for the average temperature data of the block areas whose maximum temperature data (or the maximum temperature value of the maximum temperature data) is not calculated among multiple block areas positioned adjacent to each other.

[0089] The compensation gain value generating unit 408 calculates and sets a compensation gain value corresponding to the upper average temperature data of the corresponding block area whose maximum temperature data is calculated to be the highest.

[0090] Thereafter, the compensation gain value generation unit 408 calculates or updates the compensation gain value for each of the N×M block areas in units of at least one frame interval, and transmits the calculated and updated compensation gain value to the image data output unit 401 in real time.

[0091] Figure 6 is a flow chart illustrating a method of detecting and modulating temperature data for each block region according to some embodiments. Figure 6Various operations in the method of detecting and modulating temperature data are illustrated and described, but the embodiments according to the present disclosure are not limited thereto, and according to various embodiments, the method may include additional operations or fewer operations without departing from the spirit and scope of the embodiments according to the present disclosure.

[0092] refer to Figure 6 The sensing data sorting unit 404 receives the voltage sensing data and the current sensing data of the pixel SP in an amount corresponding to at least one horizontal line in units of at least one horizontal period through the data driver 200, and sorts and stores the voltage sensing data and the current sensing data in units of at least one frame to correspond to the pixel resolution of the display area DA (SS1).

[0093] Figure 7 is a view illustrating a method of dividing and setting a display area into N×M block areas according to some embodiments.

[0094] As an example, Figure 7 The example of the block area divided into 16×18 blocks is shown. N and M are positive integers and may be the same as or different from each other, and therefore, the size and number of the block area are not limited to Figure 7 Size and quantity shown in the figure.

[0095] refer to Figure 7 , the data division and sorting unit 405 divides the display area DA into preset N×M block areas based on the pixel resolution of the display area DA. As an example, the pixel resolution of the display area DA may be 4K (3840×2160). In this case, when the display area DA is divided into block areas with a block size of 16×18, the pixels SP arranged in the number of 240×120 may be divided into corresponding block areas. Here, Figure 7 The block AA in includes nine block areas corresponding to 1×1, 2×1, 3×1, 1×2, 2×2, 3×2, 1×3, 2×3, and 3×3 coordinates.

[0096] The data division and sorting unit 405 receives the voltage sensing data and the current sensing data in an amount corresponding to at least one frame through the sensing data sorting unit 404. Therefore, the data division and sorting unit 405 divides and sorts the voltage sensing data and the current sensing data in units of at least one frame for each of the N×M block areas to correspond to the N×M block areas (SS2).

[0097] Next, the temperature data generating unit 406 compares the current values ​​of the current sensing data for each of the N×M block regions to extract the maximum current sensing data for each of the N×M block regions. Furthermore, the temperature data generating unit 406 performs an averaging operation on the current values ​​of the current sensing data for each of the N×M block regions to calculate the average current sensing data for each of the N×M block regions.

[0098] Subsequently, the temperature data generating unit 406 compares and analyzes the maximum current value included in the maximum current sensing data and the average current value included in the average current sensing data with reference temperature data preset in a lookup table, etc. The preset reference temperature data includes temperature values ​​corresponding to corresponding current values ​​and temperature data including the temperature values.

[0099] The temperature data generating unit 406 calculates a maximum temperature value and an average temperature value corresponding to the maximum current value and the average current value, respectively, and maximum temperature data including the maximum temperature value and average temperature data including the average temperature value, by comparing the maximum current sensing data and the average current sensing data with the reference temperature data for each of the N×M block regions. That is, the temperature data generating unit 406 calculates the maximum temperature value and the average temperature value, and the maximum temperature data including the maximum temperature value and average temperature data including the average temperature value for each of the N×M block regions (SS3).

[0100] Figure 8A and Figure 8B This is a block diagram for describing a method of comparing average temperature data and maximum temperature data of any one block area with each other.

[0101] First reference Figure 8A , the temperature data correction processing unit 407 compares the average temperature data of each of the N×M block areas with the average temperature data of the other block areas positioned adjacent to each other (SS4). As an example, the temperature data correction processing unit 407 may compare the average temperature data of the block area corresponding to the 2×1 coordinate with the average temperature data of the five block areas corresponding to the 1×1, 3×1, 1×2, 2×2, and 3×2 coordinates positioned adjacent to the 2×1 coordinate. As another example, the temperature data correction processing unit 407 may compare the average temperature data of the block area corresponding to the 2×2 coordinate with the average temperature data of the eight block areas corresponding to the 1×1, 2×1, 3×1, 1×2, 3×2, 1×3, 2×3, and 3×3 coordinates positioned adjacent to the 2×2 coordinate.

[0102] Based on the comparison result of the average temperature data of each block area with the adjacent block areas, the temperature data correction processing unit 407 transmits the average temperature data of the block area whose maximum average temperature data is not calculated among the multiple block areas positioned adjacent to each other to the compensation gain value generation unit 408 (SS5).

[0103] The compensation gain value generation unit 408 calculates and sets a compensation gain value corresponding to each average temperature data for the block area whose maximum average temperature data is not calculated by the temperature data correction processing unit 407. Specifically, the compensation gain value generation unit 408 compares and analyzes the average temperature values ​​included in the average temperature data with reference compensation data preset in a lookup table or the like. The preset reference compensation data includes corresponding compensation gain values ​​preset to correspond to the corresponding temperature values. Therefore, the temperature data correction processing unit 407 can calculate and store, for each block area, a compensation gain value corresponding to the average temperature value of the average temperature data (SS6).

[0104] On the other hand, reference Figure 8B In the case of a block region whose maximum average temperature data is calculated among a plurality of block regions positioned adjacent to each other, the temperature data correction processing unit 407 additionally compares the maximum temperature data of the block region with the maximum temperature data of other block regions positioned adjacent to each other (SS7). Based on the comparison result between the maximum temperature data, when the maximum temperature data (or the maximum temperature value of the maximum temperature data) among the plurality of block regions positioned adjacent to each other is not calculated, the temperature data correction processing unit 407 transmits the average temperature data of the corresponding block region to the compensation gain value generation unit 408 (SS8).

[0105] Based on the comparison result between the maximum temperature data, the compensation gain value generation unit 408 calculates and sets the compensation gain value (SS6) corresponding to each average temperature data for the block area whose maximum temperature data (or the maximum temperature value of the maximum temperature data) is not calculated among multiple block areas positioned adjacent to each other.

[0106] Figure 9 This is a graph used to describe a method for calculating and replacing the upper average temperature data of any block area.

[0107] refer to Figure 9 , as Figure 8BIn the figure, when the maximum temperature data (or maximum temperature value) is calculated as the maximum or highest among the block areas located adjacent to each other based on the comparison results between the maximum temperature data, the temperature data correction processing unit 407 calculates upper average temperature data for temperature data higher than the average temperature data of the corresponding block area (i.e., the average temperature data or higher). For example, the temperature data correction processing unit 407 calculates an upper average temperature value Ymavr, which is the average temperature value of the temperature values ​​(including the maximum temperature value Ymax) of the temperature data higher than the average temperature value Yavr included in the average temperature data of the corresponding block area. In addition, the temperature data correction processing unit 407 modulates or replaces the average temperature data of the corresponding block area whose maximum temperature data is calculated as the highest with the upper average temperature data including the upper average temperature value Ymavr, and transmits the upper average temperature data of the corresponding block area to the compensation gain value generation unit 408 (SS9).

[0108] Based on the comparison result between the maximum temperature data, the compensation gain value generation unit 408 calculates and sets the compensation gain value corresponding to each average temperature data for the average temperature data of the block area whose maximum temperature data (or the maximum temperature value of the maximum temperature data) is not calculated among the plurality of block areas positioned adjacent to each other. In addition, the compensation gain value generation unit 408 calculates and sets the compensation gain value corresponding to the upper average temperature data of the corresponding block area whose maximum temperature data is calculated to be the highest.

[0109] Thereafter, the compensation gain value generation unit 408 calculates or updates the compensation gain value for each of the N×M block areas in units of at least one frame interval, and transmits the calculated and updated compensation gain value to the image data output unit 401 in real time.

[0110] The image data output unit 401 divides the digital image data RGB DATA into N×M block areas per frame and compensates and converts the corresponding digital image data RGB DATA corresponding to the N×M block areas using a compensation gain value for each of the N×M block areas. In this case, the image data output unit 401 can correct and compensate the grayscale value or brightness value of the digital image data RGB DATA by adding the compensation gain value to the grayscale value or brightness value of the digital image data RGB DATA, subtracting the compensation gain value from the grayscale value or brightness value of the digital image data RGB DATA, or multiplying the grayscale value or brightness value of the digital image data RGB DATA by the compensation gain value. The image data output unit 401 sequentially supplies the compensated and converted image data DATA to the data driver integrated circuit (SS10) of the data driver 200 in an amount corresponding to at least one horizontal line.

[0111] Figure 10 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure.

[0112] refer to Figure 10 The display device 10 including the display panel 100 according to the present disclosure may be applied to a dashboard 10_a of a vehicle, a center panel 10_b of a vehicle, or a central information display (CID) 10_c located on a dashboard of a vehicle. Furthermore, the display device 10 according to some embodiments may be applied to interior mirror displays 10_d and 10_e that replace side mirrors of a vehicle, a navigation device, and the like.

[0113] Figure 11 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure.

[0114] refer to Figure 11 The display device 10 including the display panel 100 according to the present disclosure can be applied to a watch-type smart device as a position screen display 10_f, etc. Therefore, the display device 10 including the display panel 100 according to the present disclosure can be applied as an image display formed into a wearable healthcare device or a biometric information measuring device, etc.

[0115] Figure 12 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure.

[0116] refer to Figure 12 , the display device 10 including the display panel 100 according to the present disclosure can be applied to a transparent display device 10-3. The transparent display device 10-3 can transmit light while displaying an image IM. Therefore, a user located on the front surface of the transparent display device 10-3 can observe not only the image IM displayed on the display panel 100, but also an object RS or background located on the rear surface of the transparent display device 10-3. When the display device 10 including the display panel 100 is applied to the transparent display device 10-3, the display panel 100 of the display device 10 may include a light-transmitting portion capable of transmitting light, or may be made of a material capable of transmitting light.

[0117] Figure 13 is a perspective view illustrating an application example of a display device according to some embodiments of the present disclosure.

[0118] exist Figure 13, the display device 10 is illustrated as a foldable display device that is folded in the X-axis direction. The display device 10 applied to a foldable and portable display device can be maintained in both a folded state and an unfolded state. The display device 10 can be folded in an inward folding manner in which the front surface thereof is located inside. When the foldable and portable display device is bent or folded in an inward folding manner, the front surfaces of the foldable and portable display device may be arranged to face each other. Alternatively, the foldable and portable display device can be folded in an outward folding manner in which the front surface thereof is located outside. When the foldable and portable display device is bent or folded in an outward folding manner, the rear surfaces of the foldable and portable display device may be arranged to face each other.

[0119] The first non-folding area NFA1 may be positioned on one side (e.g., the right side) of the folding area FDA. The second non-folding area NFA2 may be positioned on the other side (e.g., the left side) of the folding area FDA. The touch sensing unit TSU according to some embodiments of the present disclosure may be formed and positioned on the first non-folding area NFA1 and the second non-folding area NFA2, respectively.

[0120] The first folding line FOL1 and the second folding line FOL2 may extend in the Y-axis direction, and the display device 10 may be folded in the X-axis direction. For this reason, the length of the display device 10 in the X-axis direction may be reduced by about half, and thus, the user may conveniently carry the display device 10.

[0121] Meanwhile, the extending direction of the first folding line FOL1 and the extending direction of the second folding line FOL2 are not limited to the second direction (Y-axis direction). For example, the first folding line FOL1 and the second folding line FOL2 may extend in the X-axis direction, and the display device 10 may be folded in the Y-axis direction. In this case, the length of the display device 10 in the Y-axis direction can be reduced by approximately half. Alternatively, the first folding line FOL1 and the second folding line FOL2 may extend in a diagonal direction of the display device 10 corresponding to a direction between the X-axis direction and the Y-axis direction. In this case, the display device 10 can be folded into a triangular shape.

[0122] When the first folding line FOL1 and the second folding line FOL2 extend in the Y-axis direction, the length of the folding area FDA in the X-axis direction may be smaller than the length of the folding area FDA in the Y-axis direction. Furthermore, the length of the first non-folding area NFA1 in the X-axis direction may be larger than the length of the folding area FDA in the X-axis direction. The length of the second non-folding area NFA2 in the X-axis direction may be larger than the length of the folding area FDA in the X-axis direction.

[0123] The first display area DA1 may be positioned on the front surface of the display device 10. The first display area DA1 may overlap with the folding area FDA, the first non-folding area NFA1, and the second non-folding area NFA2. Therefore, when the display device 10 is unfolded, an image may be displayed in the folding area FDA, the first non-folding area NFA1, and the second non-folding area NFA2 of the display device 10 in the front surface direction.

[0124] The second display area may be positioned on the rear surface of the display device 10. The second display area may overlap with the second non-folding area NFA2. Therefore, when the display device 10 is folded, an image may be displayed in the second non-folding area NFA2 of the display device 10 in the front surface direction.

[0125] exist Figure 13 , the through hole TH in which the camera SDA is formed is positioned in the first non-folding area NFA1 , but the embodiment of the present disclosure is not limited thereto. The through hole TH or the camera SDA may be positioned in the second non-folding area NFA2 or the folding area FDA.

[0126] At the end of the detailed description, those skilled in the art will recognize that many changes and modifications can be made to the disclosed embodiments without departing substantially from the spirit and scope of the embodiments according to the present disclosure as defined by the appended claims and their equivalents. Therefore, the disclosed embodiments of the present disclosure are used in a generic and descriptive sense only and not for purposes of limitation.

Claims

1. A display device, comprising: a display panel configured to display an image by including a plurality of pixels arranged in a display area of ​​the display panel; a scan driver configured to supply a compensation gate scan signal to the plurality of pixels in units of horizontal lines through the compensation gate lines of the display area; a data driver configured to detect pixel driving current values ​​output from the plurality of pixels by the compensated gate scan signal, generate data voltages according to compensated image data, and supply the data voltages to data lines of the display area; as well as a display driver configured to divide the display area into a plurality of block areas, set a compensation gain value for each of the plurality of block areas using the pixel driving current value, correct image data using the compensation gain value for each of the plurality of block areas, and supply the corrected image data to the data driver, The display driver is further configured to generate the compensated image data by compensating a grayscale value or a brightness value of the image data for each of the plurality of block areas using the compensation gain value for each of the plurality of block areas.

2. The display device according to claim 1, wherein The data driver is further configured to: sensing pixel driving voltages and pixel driving currents for the plurality of pixels through voltage detection lines in the display area; as well as Current sensing data corresponding to the sensed amounts of the pixel driving currents of the plurality of pixels is generated, and the current sensing data is transmitted to the display driver.

3. The display device according to claim 2, wherein: The display driver is further configured to: Dividing the display area into preset N×M block areas, and dividing the current sensing data in units of at least one frame for each of the N×M block areas to correspond to the N×M block areas; as well as Maximum temperature data and average temperature data for each of the N×M block areas are calculated to correspond to maximum current sensing data and average current sensing data for each of the N×M block areas.

4. The display device according to claim 3, wherein The display driver is further configured to: comparing the average temperature data of each of the N×M block areas with the average temperature data of other block areas adjacent to each other; comparing maximum temperature data of a block region whose maximum average temperature data is calculated as the largest among the plurality of block regions adjacent to each other according to the comparison result with maximum temperature data of other block regions adjacent to each other; as well as The compensation gain value corresponding to each average temperature data of the adjacent block area for which the maximum average temperature data is not calculated is calculated and set.

5. The display device according to claim 4, wherein The display driver is further configured to: calculating and setting the compensation gain value corresponding to the average temperature data of each block area based on the maximum temperature data that is not calculated as the maximum or highest among the plurality of block areas adjacent to each other according to a comparison result between the maximum temperature data; calculating, based on the comparison result between the maximum temperature data, upper average temperature data for temperature data higher than the average temperature data of the corresponding block area based on the maximum temperature data calculated as the largest or highest among the plurality of block areas adjacent to each other, modulating or replacing the average temperature data of the corresponding block area with the upper average temperature data, and calculating the compensation gain value corresponding to the upper average temperature data; dividing the image data input from an external source to correspond to the N×M block areas; compensating and converting the corresponding image data corresponding to the N×M block areas using the compensation gain value for each of the N×M block areas; as well as The compensated and converted image data are sequentially supplied to the data driver in an amount corresponding to at least one horizontal line. The display device according to claim 2 , wherein: The display driver includes: a data dividing and sorting unit configured to divide the display area into preset N×M block areas, and divide the current sensing data in units of at least one frame for each of the N×M block areas to correspond to the N×M block areas; and a temperature data generating unit configured to compare current values ​​of the current sensing data for each of the N×M block areas with each other, perform an averaging operation to calculate maximum current sensing data and average current sensing data for each of the N×M block areas, and calculate a maximum temperature value and an average temperature value corresponding to a maximum current value included in the maximum current sensing data and an average current value included in the average current sensing data, respectively, and maximum temperature data and average temperature data for each of the N×M block areas, respectively including the maximum temperature value and the average temperature value.

7. The display device according to claim 6, wherein: The display driver further includes: A temperature data correction processing unit, wherein the temperature data correction processing unit is configured to: comparing the average temperature data of each of the N×M block areas with the average temperature data of other block areas adjacent to each other; comparing maximum temperature data of a block region whose maximum average temperature data is calculated as the largest among the plurality of block regions adjacent to each other according to the comparison result with maximum temperature data of other block regions adjacent to each other; and calculating, based on the comparison result between the maximum temperature data, upper average temperature data for temperature data higher than the average temperature data of the corresponding block area based on the maximum temperature data calculated as the largest or highest among the plurality of block areas adjacent to each other, and modulating or replacing the average temperature data of the corresponding block area with the upper average temperature data; and A compensation gain value generating unit, wherein the compensation gain value generating unit is configured to: calculating the compensation gain value corresponding to each average temperature data of a block region whose maximum average temperature data is not calculated as the maximum among the plurality of block regions adjacent to each other; calculating the compensation gain value corresponding to each average temperature data of adjacent block areas for which the maximum temperature data among the plurality of block areas adjacent to each other is not calculated as the maximum or highest; and The compensation gain value corresponding to the upper average temperature data for a block area that modulates the average temperature data with the upper average temperature data is calculated.

8. A display device comprising: a display panel configured to display an image by including a plurality of pixels arranged in a display area of ​​the display panel; a scan driver configured to supply a compensation gate scan signal to the plurality of pixels in units of horizontal lines through the compensation gate lines of the display area; a data driver configured to detect pixel driving current values ​​output from the plurality of pixels by the compensated gate scan signal, generate data voltages according to compensated image data, and supply the data voltages to data lines of the display area; as well as a display driver configured to divide the display area into a plurality of block areas, set a compensation gain value for each of the plurality of block areas using the pixel driving current value, correct image data using the compensation gain value for each of the plurality of block areas, and supply the corrected image data to the data driver, The display driver is further configured to divide the display area into preset N×M block areas, and generate the compensated image data by compensating and modulating the image data for each of the N×M block areas using the compensation gain value for each of the N×M block areas.

9. The display device according to claim 8, wherein The data driver is further configured to: sensing pixel driving voltages and pixel driving currents for the plurality of pixels through voltage detection lines in the display area; as well as Current sensing data corresponding to the sensed amounts of the pixel driving currents of the plurality of pixels is generated, and the current sensing data is transmitted to the display driver.

10. The display device according to claim 9, wherein The display driver is further configured to: dividing the current sensing data in units of at least one frame for each of the N×M block areas to correspond to the N×M block areas; as well as Maximum temperature data and average temperature data for each of the N×M block areas are calculated to correspond to maximum current sensing data and average current sensing data for each of the N×M block areas.

11. An electronic device comprising a display device, in, The display device includes: a display panel configured to display an image by including a plurality of pixels arranged in a display area of ​​the display panel; a scan driver configured to supply a compensation gate scan signal to the plurality of pixels in units of horizontal lines through the compensation gate lines of the display area; a data driver configured to detect pixel driving current values ​​output from the plurality of pixels through the compensated gate scan signal, generate data voltages according to compensated image data, and supply the data voltages to data lines of the display area; and a display driver configured to divide the display area into a plurality of block areas, set a compensation gain value for each of the plurality of block areas using the pixel driving current value, correct image data using the compensation gain value for each of the plurality of block areas, and supply the corrected image data to the data driver, wherein the display driver is further configured to generate the compensated image data by compensating for a grayscale value or a brightness value of the image data for each of the plurality of block areas using the compensation gain value for each of the plurality of block areas.

Images