Display device, electronic device, and method of driving display device

Abstract

The invention relates to a display device, an electronic device, and a method of driving the display device. The display device includes: a display panel in which a plurality of sub-pixels and a plurality of reference voltage lines connected to the plurality of sub-pixels are disposed; a data driving circuit connected to the plurality of reference voltage lines, the data driving circuit to sense a first sub-pixel among the plurality of sub-pixels in a first period, and the data driving circuit to sense a second sub-pixel among the plurality of sub-pixels in a second period after the first period; and a timing controller for correcting a sensing value obtained by sensing the first sub-pixel based on a sensing value obtained by sensing the second sub-pixel.

Description

[0001] Cross Reference to Related Applications

[0002] This application claims priority to Korean Patent Application No. 10-2024-0073555 filed on June 5, 2024, as well as all the benefits accruing therefrom, the disclosure of which is incorporated herein in its entirety by reference. TECHNICAL FIELD

[0003] Embodiments of the disclosure relate to a display device, an electronic device including the display device, and a method of driving the display device. BACKGROUND

[0004] With the development of information technology, the importance of a display device, which is a medium for connecting a user and information, is being highlighted. In response to this, the use of display devices such as liquid crystal display devices ("LCDs") and organic light emitting display devices is increasing.

[0005] For example, an organic light emitting display device can implement various luminances by adjusting the magnitude of current flowing through a light emitting element. However, when a circuit element configuring the display device deteriorates, a characteristic value (e.g., threshold voltage of a transistor, etc.) of the circuit element can change. By compensating for the change in the characteristic value of the circuit element, display quality can be improved.

[0006] Meanwhile, during a period in which a circuit element is sensed to compensate for a change in a characteristic value of the circuit element, the temperature of the display device can change. The temperature change can cause a decrease in reliability of sensing and compensation. Accordingly, a method capable of reducing the influence on sensing and compensation due to the temperature change is provided. SUMMARY

[0007] Technical aspects to be addressed are to provide a display device capable of improving reliability by reducing the influence on sensing and compensation due to a temperature change, an electronic device including the display device, and a method of driving the display device.

[0008] Embodiments of the disclosure can provide a display device. The display device includes a display panel in which a plurality of sub-pixels and a plurality of reference voltage lines connected to the plurality of sub-pixels are disposed; a data driving circuit connected to the plurality of reference voltage lines, the data driving circuit for sensing a first sub-pixel among the plurality of sub-pixels in a first period, and the data driving circuit for sensing a second sub-pixel among the plurality of sub-pixels in a second period after the first period; and a timing controller for correcting a sensing value obtained by sensing the first sub-pixel based on a sensing value obtained by sensing the second sub-pixel.

[0009] The temperature of the display panel at the time point at which the second sub-pixel is sensed can be lower than the temperature of the display panel at the time point at which the first sub-pixel is sensed.

[0010] The first sub-pixel can be positioned in a first column, the second sub-pixel can be positioned in a second column different from the first column, and the first sub-pixel and the second sub-pixel can be included in a plurality of first color sub-pixels, and the first sub-pixel and the second sub-pixel can be positioned in the same row.

[0011] The first column can be included in odd-numbered columns and the second column can be included in even-numbered columns. The timing controller can calculate a plurality of first average sensing values for each row based on a plurality of first sensing values of first color sub-pixels positioned in the odd-numbered columns among the plurality of first color sub-pixels, and calculate a plurality of second average sensing values for each row based on a plurality of second sensing values of first color sub-pixels positioned in the even-numbered columns among the plurality of first color sub-pixels.

[0012] The timing controller can correct the plurality of first sensing values based on the plurality of second sensing values.

[0013] The timing controller can calculate a plurality of normalization constants for each row, wherein the normalization constant for each row corresponds to a difference between each of the plurality of first average sensing values for each row and a corresponding one of the plurality of second average sensing values for each row, and calculate a plurality of corrected sensing values obtained by correcting the plurality of first sensing values based on the calculated plurality of normalization constants.

[0014] The timing controller can generate a compensation value based on the plurality of corrected sensing values and the plurality of second sensing values.

[0015] A plurality of data lines connected to a plurality of sub-pixels can be provided in a display panel. At least one of the plurality of sub-pixels can include a light emitting element, a first transistor including a gate electrode electrically connected to a first node and connected between a first power line and a second node, a second transistor including a gate electrode electrically connected to a first scan line and configured to switch electrical connection between the first node and a corresponding data line of the plurality of data lines, a third transistor including a gate electrode electrically connected to a second scan line and configured to switch electrical connection between the second node and a corresponding reference voltage line of a plurality of reference voltage lines, and a storage capacitor including one side electrode electrically connected to the first node and the other side electrode electrically connected to the second node.

[0016] The data driving circuit can include an output circuit configured to supply a data voltage to a plurality of data lines, and a sensing circuit configured to receive an analog voltage from a plurality of reference voltage lines and convert the received analog voltage into a digital sensing value corresponding to the received analog voltage.

[0017] Embodiments of the disclosure can provide a display apparatus. The display apparatus includes a display panel in which a plurality of sub-pixels and a plurality of reference voltage lines connected to the plurality of sub-pixels are disposed, a data driving circuit connected to the plurality of reference voltage lines, the data driving circuit for sensing a first sub-pixel among the plurality of sub-pixels in a first period, and the data driving circuit for sensing a second sub-pixel among the plurality of sub-pixels in a second period after the first period, and a timing controller for correcting a sensing value obtained by sensing the first sub-pixel and a sensing value obtained by sensing the second sub-pixel based on an average sensing value for each row stored in advance.

[0018] The first sub-pixel can be positioned in a first column, the second sub-pixel can be positioned in a second column different from the first column, and the first sub-pixel and the second sub-pixel can be included in a plurality of first color sub-pixels, and the first sub-pixel and the second sub-pixel can be positioned in the same row.

[0019] The first column can be included in odd-numbered columns and the second column can be included in even-numbered columns. The timing controller can calculate a plurality of first average sensing values for each row based on a plurality of first sensing values of first color sub-pixels among the plurality of first color sub-pixels positioned in the odd-numbered columns, and calculate a plurality of second average sensing values for each row based on a plurality of second sensing values of first color sub-pixels among the plurality of first color sub-pixels positioned in the even-numbered columns.

[0020] The timing controller can correct each of the plurality of first sensing values and the plurality of second sensing values based on the average sensing value for each row stored in advance.

[0021] The timing controller can calculate a first normalization constant for each row, wherein the first normalization constant for each row corresponds to a difference between the first average sensing value for each row and the average sensing value for each row stored in advance, and calculate a second normalization constant for each row, wherein the second normalization constant for each row corresponds to a difference between the second average sensing value for each row and the average sensing value for each row stored in advance.

[0022] The timing controller can calculate a correction sensing value obtained by correcting the first sensing value and the second sensing value based on the calculated first normalization constant for each row and the second normalization constant for each row, and generate a compensation value based on the correction sensing value.

[0023] Embodiments of the disclosure can provide a method of driving a display apparatus, the method including sensing and compensating for a plurality of first color subpixels. Sensing and compensating for the plurality of first color subpixels can include calculating a plurality of first sensed values for first color subpixels positioned in odd-numbered columns among the plurality of first color subpixels, calculating a plurality of first average sensed values for each row based on the calculated plurality of first sensed values, calculating a plurality of second sensed values for first color subpixels positioned in even-numbered columns among the plurality of first color subpixels, calculating a plurality of second average sensed values for each row based on the calculated plurality of second sensed values, calculating a plurality of normalization constants for each row, wherein the normalization constant for each row corresponds to a difference between each of the plurality of first average sensed values for each row and a corresponding one of the plurality of second average sensed values for each row, calculating a plurality of corrected sensed values obtained by correcting the plurality of first sensed values based on the calculated plurality of normalization constants, and generating a compensation value based on the calculated plurality of corrected sensed values and the calculated plurality of second sensed values.

[0024] The corrected average sensed value for each row corresponding to the average value of the corrected sensed values can be the same as the second average sensed value for each row.

[0025] Calculating the corrected sensed values can include subtracting a corresponding one of the normalization constants from each of the first sensed values. Each of the normalization constants can be calculated by subtracting the calculated second average sensed value for each row from the calculated first average sensed value for each row.

[0026] The method according to embodiments of the disclosure can further include sensing and compensating for second color subpixels and sensing and compensating for third color subpixels. While sequentially performing the sensing of the first color subpixels, the sensing of the second color subpixels, and the sensing of the third color subpixels, the temperature of the display apparatus can gradually decrease.

[0027] Embodiments of the disclosure can provide an electronic apparatus. The electronic apparatus includes a display module including a display panel in which a plurality of subpixels and a plurality of reference voltage lines connected to the plurality of subpixels are disposed, and a data driving circuit connected to the plurality of reference voltage lines, the data driving circuit for sensing first subpixels among the plurality of subpixels in a first period, and the data driving circuit for sensing second subpixels among the plurality of subpixels in a second period after the first period; a memory storing a lookup table in which a plurality of sensed values obtained by sensing the first subpixels and the second subpixels in the first period and the second period are included; and a processor for correcting a value obtained by sensing the first subpixels based on a value obtained by sensing the second subpixels in the lookup table. BRIEF DESCRIPTION OF DRAWINGS

[0028] The above and other features of this disclosure will become more apparent from the accompanying drawings, which describe embodiments of the present disclosure in a further detailed manner:

[0029] Figure 1 This is a system block diagram of an electronic device including a display device according to embodiments of the present disclosure;

[0030] Figure 2 This is a conceptual diagram of a display area according to an embodiment of the present disclosure;

[0031] Figure 3 This is an equivalent circuit diagram of a sub-pixel according to an embodiment of the present disclosure;

[0032] Figure 4 This is a diagram illustrating a sensing circuit in an embodiment of the present disclosure;

[0033] Figure 5 This is a diagram showing the image displayed on the display panel when the circuit is active;

[0034] Figure 6 This is a diagram showing that no image is displayed on the display panel when the screen is closed.

[0035] Figure 7A This is a diagram illustrating a method for sensing sub-pixels according to an embodiment;

[0036] Figure 7B This is a diagram illustrating a method for sensing sub-pixels according to another embodiment;

[0037] Figure 8 It is shown in Figure 7A A diagram illustrating the method for detecting sensed values ​​in an embodiment;

[0038] Figure 9 This is a graph showing the temperature measurement points and sensed values ​​on the display panel;

[0039] Figure 10 It is shown Figure 9 A graph showing the temperature change over time at the temperature measurement point;

[0040] Figure 11 This is a graph showing the average sensed values ​​calculated for each row during the first time period;

[0041] Figure 12 This is a graph showing the average sensing values ​​calculated for each row from the first to the sixth time period;

[0042] Figure 13 It is a graph showing the normalization constant, the corrected sensing value, and the corrected average sensing value for each row calculated in the first time period in the embodiment.

[0043] Figure 14 is a flowchart of a method of driving a display apparatus according to an embodiment;

[0044] Figure 15 is a flowchart of a method of sensing and compensating for a first color sub-pixel in an embodiment;

[0045] Figure 16 is a block diagram of a timing controller according to an embodiment;

[0046] Figure 17 is a graph showing a normalization constant calculated for each row in a first period, a corrected sensed value, and a corrected average sensed value for each row, etc. in another embodiment;

[0047] Figure 18 is a flowchart of a method of sensing and compensating for a first color sub-pixel in another embodiment;

[0048] Figure 19 is a block diagram of a timing controller according to another embodiment; and

[0049] Figure 20 is a block diagram of an electronic device according to an embodiment of the disclosure. DETAILED DESCRIPTION

[0050] Hereinafter, various embodiments of the disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily practice the disclosure. The disclosure can be implemented in various different forms and is not limited to the embodiments described herein.

[0051] In order to clearly describe the disclosure, portions unrelated to the description are omitted, and throughout the specification, the same or similar elements are indicated by the same reference numerals. Accordingly, the above-described reference numerals can be used in other drawings.

[0052] Further, the size and thickness of each component shown in the drawings are arbitrarily shown for the convenience of description, and thus the disclosure is not necessarily limited to the size and thickness shown in the drawings. In the drawings, the thickness can be exaggerated to clearly express various layers and regions.

[0053] Further, the expression "is the same" in the description can mean "is substantially the same". That is, the expression "is the same" can be the same enough for a person of ordinary skill to understand that it is the same. Other expressions can also be expressions in which "substantially" is omitted.

[0054] Various components may be described using terms such as "first" and "second," but components should not be limited by these terms. These terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of this disclosure, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component. Unless the context clearly indicates otherwise, singular expressions include plural expressions.

[0055] The terms “below,” “under,” “above,” and “over” are used to describe the relationships between the configurations shown in the accompanying drawings. These terms are described as relative concepts based on the directions indicated in the drawings.

[0056] Unless otherwise defined, all terms used herein (including technical and scientific terms) shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Furthermore, unless expressly defined herein, terms (such as those defined in a general dictionary) shall be interpreted as having a meaning consistent with their meaning in the context of the relevant art and shall not be interpreted in an idealized or overly formalized sense.

[0057] It should be understood that terms such as "comprising" or "having" are used to indicate the presence of features, quantities, steps, operations, components, parts, or combinations thereof described in the specification, but do not preclude the possibility of the presence or addition of one or more other features, quantities, steps, operations, components, parts, or combinations thereof.

[0058] Embodiments of this disclosure are described in detail below with reference to the accompanying drawings.

[0059] Figure 1 This is a system block diagram of an electronic device DS including a display device 100 according to an embodiment of the present disclosure.

[0060] Reference Figure 1 The display device 100 according to the embodiments of the present disclosure may include a display panel 110, a data driving circuit 120, a scan driving circuit 130, a timing controller 140, and a power supply circuit 150, etc.

[0061] Multiple sub-pixels SP are disposed in the display panel 110. In the display panel 110, multiple data lines DL1 to DLn (n is an integer of 2 or greater), multiple scan lines SL1 to SLm (m is an integer of 2 or greater), and multiple reference voltage lines RVL1 to RVLh (h is an integer of 2 or greater) electrically connected to the multiple sub-pixels SP can be provided. In the display panel 110, one or more power lines configured to apply power voltages (e.g., a first power voltage ELVDD and a second power voltage ELVSS, etc.) to the multiple sub-pixels SP can be provided.

[0062] The display panel 110 can include a display area AA provided with a plurality of sub-pixels SP and a non-display area NA positioned at a peripheral area (e.g., an edge of the display area AA) of the display area AA.

[0063] The display panel 110 can be formed to be flat, but embodiments of the present disclosure are not limited thereto. For example, the display panel 110 can include curved surface portions formed at left and right end portions. The curved surface can have a constant curvature or a varying curvature. Further, the display panel 110 can be flexible so as to be bent, twisted, folded, folded, or rolled.

[0064] The plurality of sub-pixels SP can be disposed in the display area AA in a matrix type. According to an embodiment, the plurality of sub-pixels SP can be disposed in the display area AA in a structure.

[0065] The plurality of data lines DL1 to DLn can extend in one direction in the display panel 110. For example, the one direction can be the second direction DR2. The plurality of data lines DL1 to DLn can extend and be disposed in the display panel 110 in the second direction DR2 (e.g., generally in the second direction DR2). For example, the second direction DR2 can be a direction from an upper side to a lower side of the display panel 110, but embodiments of the present disclosure are not limited thereto.

[0066] The plurality of scan lines SL1 to SLm can extend in one direction in the display panel 110. For example, the one direction can be the first direction DR1. The plurality of scan lines SL1 to SLm can extend and be disposed in the display panel 110 in the first direction DR1 (e.g., generally in the first direction DR1). The first direction DR1 can be a direction different from the second direction DR2, but embodiments of the present disclosure are not limited thereto. For example, the first direction DR1 can be a direction from a left side to a right side of the display panel 110.

[0067] The plurality of reference voltage lines RVL1 to RVLh can extend in one direction in the display panel 110. In an embodiment, the plurality of reference voltage lines RVL1 to RVLh can extend and be disposed in the second direction DR2 (e.g., generally in the second direction DR2). However, embodiments of the present disclosure are not limited thereto.

[0068] The data driving circuit 120 can include an output circuit 122 and a sensing circuit 124. In an embodiment, the output circuit 122 and the sensing circuit 124 can be disposed to be functionally separated in the same integrated circuit. According to an embodiment, the output circuit 122 and the sensing circuit 124 can be disposed in different integrated circuits, respectively. ​

[0069] The output circuit 122 can be configured to supply data voltages to the plurality of data lines DL1 to DLn. The output circuit 122 can generate data voltages based on the second image data DATA2 and a data driving circuit control signal DCS, and output the generated data voltages to the plurality of data lines DL1 to DLn according to timing. The data driving circuit control signal DCS can include, for example, a source start pulse (“SSP”) signal, a source shift clock (“SSC”) signal, and a source output enable (“SOE”) signal, etc.

[0070] The sensing circuit 124 is configured to input a reference voltage to the plurality of reference voltage lines RVL1 to RVLh in response to the data driving circuit control signal DCS and sense voltages of the plurality of reference voltage lines RVL1 to RVLh. The sensing circuit 124 can convert the sensed analog voltages into digital sensing values Dsen corresponding thereto. The sensing circuit 124 can include one or more analog-to-digital converters (“ADCs”). The data driving circuit control signal DCS can include, for example, a reference voltage switching signal, a sampling control signal, and a holding control signal, etc. Details of the above signals will be described later with reference to FIGS. 6 to 8. Figure 4 The above signals are described in detail.

[0071] The data driving circuit 120 can be implemented as an integrated circuit (e.g., a source driver integrated circuit (“SDIC”)) formed separately from the display panel 110. The data driving circuit 120 can be formed together with the display panel 110 and can be formed in at least a partial region of the non-display area NA of the display panel 110.

[0072] The scan driving circuit 130 is configured to output scan signals to the plurality of scan lines SL1 to SLm in response to a scan driving circuit control signal SCS. The scan driving circuit control signal SCS can include a start signal indicating the start of a frame and a horizontal synchronization signal for outputting scan signals according to timing at which data voltages are applied, etc.

[0073] The scan driving circuit 130 can be implemented as an integrated circuit (e.g., a gate driver integrated circuit (“GDIC”)) formed separately from the display panel 110. The scan driving circuit 130 can be formed together with the display panel 110 and can be formed in at least a partial region of the non-display area NA of the display panel 110.

[0074] The timing controller 140 can be configured to control the data driving circuit 120 and the scan driving circuit 130. The timing controller 140 can generate and output control signals DCS and SCS for controlling the data driving circuit 120 and the scan driving circuit 130 based on control signals (e.g., a synchronization signal, a clock signal, and a data enable signal, etc.) received through the host 160. According to an embodiment, the timing controller 140 can generate a synchronization signal and a data enable signal, etc. in the timing controller 140 based on a control signal (e.g., information about a driving frequency (or frame rate) of an image displayed in the display panel 110) received through the host 160.

[0075] The timing controller 140 can receive the first image data DATA1 from the host 160 and align the input first image data DATA1 in a unit of a pixel behavior. The timing controller 140 can convert the input first image data DATA1 according to a preset interface (e.g., a low-voltage differential signal ("LVDS"), a display port ("DP"), and an embedded display port ("eDP"), etc.). The second image data DATA2 output from the timing controller 140 to the data driving circuit 120 can be obtained by converting inside the timing controller 140 according to a preset interface.

[0076] The timing controller 140 can generate the second image data DATA2 based on the input first image data DATA1 and the sensing value Dsen. The second image data DATA2 can be obtained by compensating for a characteristic value change (e.g., a change in a characteristic value due to degradation of a circuit element, etc.) of the sub-pixel SP.

[0077] According to an embodiment, the timing controller 140 can be disposed in the display apparatus 100 in a logic type. According to an embodiment, the timing controller 140 can be disposed in the display apparatus 100 in a processor type. The timing controller 140 can include one or more memories (e.g., a register, etc.).

[0078] The power supply circuit 150 can be configured to output a constant voltage of a constant voltage level. The power supply circuit 150 can output a power voltage (e.g., a first power voltage ELVDD and a second power voltage ELVSS, etc.) supplied to the display panel 110. According to an embodiment, the power supply circuit 150 can output a voltage (e.g., a gate high voltage and a gate low voltage, etc.) supplied to the scan driving circuit 130. According to an embodiment, the power supply circuit 150 can output a voltage (e.g., a gamma voltage and a reference voltage, etc.) supplied to the data driving circuit 120. For example, the power supply circuit 150 can include a regulator (e.g., a low-dropout ("LDO") regulator, etc.). For example, the power supply circuit 150 can be implemented as a power management integrated circuit ("PMIC").

[0079] The host 160 can include a set-top box and an application processor ("AP"), etc. In an embodiment, the host 160 can be a configuration external to the display apparatus 100, and the host 160 is not included in the display apparatus 100. In an embodiment, the host 160 can be installed in the display apparatus 100. Transmission and reception of the first image data DATA1 and the control signal CS can be performed between the host 160 and the display apparatus 100 through an interface. For example, the interface can be a serial programming interface ("SPI"), an internal integrated circuit ("I2C"), and a mobile industry processor interface ("MIPI"), etc. However, embodiments of the present disclosure are not limited thereto.

[0080] The electronic device DS according to an embodiment of the present disclosure can include the display apparatus 100 and the host 160.

[0081] In Figure 1 , the circuitry supplying a signal and a voltage, etc. to the display panel 110 is classified only according to a function. For example, the data driving circuit 120 and the timing controller 140 can be formed in one integrated circuit. The data driving circuit 120 and the timing controller 140 can be classified according to a function in one integrated circuit in the display apparatus 100.

[0082] The display apparatus 100 according to an embodiment of the present disclosure can be used as a display screen of various products such as not only a display screen of a mobile electronic device such as a mobile phone, a smart phone, a tablet personal computer ("PC"), a smart watch, a watch phone, a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player ("PMP"), a navigation device, and an ultra-mobile personal computer ("UMPC") but also a display screen of a television, a notebook computer, a monitor, a billboard, and an Internet of Things ("IoT") device.

[0083] Figure 2 is a conceptual diagram of a display area AA according to an embodiment of the present disclosure.

[0084] Referring to Figure 2 , a plurality of pixels (for example, a first pixel PXL1, a second pixel PXL2, a third pixel PXL3, and a fourth pixel PXL4; hereinafter, also referred to as the first pixel PXL1 to the fourth pixel PXL4) are exemplarily illustrated which are disposed in a matrix type. Figure 2 , the four pixels PXL1 to PXL4 can be disposed adjacent to each other in a horizontal direction (or a row direction), or can be disposed adjacent to each other in a vertical direction (or a column direction).

[0085] One of the four pixels PXL1 to PXL4 (e.g., the first pixel PXL1 positioned at the upper left) can include a plurality of sub-pixels. In an embodiment, the first pixel PXL1 can include a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel. In an embodiment, the first color sub-pixel can be a red sub-pixel SPr. The second color sub-pixel can be a green sub-pixel SPg. The third color sub-pixel can be a blue sub-pixel SPb. However, embodiments of the present disclosure are not limited thereto. For example, the first pixel PXL1 can further include a white sub-pixel.

[0086] Hereinafter, for convenience of description, the display area AA is described based on four pixels PXL1 to PXL4 arranged in two rows and two columns. Further, an embodiment in which each of the four pixels PXL1 to PXL4 includes a red sub-pixel SPr, a green sub-pixel SPg, and a blue sub-pixel SPb is described as an example. However, embodiments of the present disclosure are not limited thereto.

[0087] The three sub-pixels SPr, SPg, and SPb configuring one pixel (e.g., the first pixel PXL1) can be configured to respectively emit light of different wavebands. For example, the red sub-pixel SPr can be configured to emit light of a red waveband. For example, the green sub-pixel SPg can be configured to emit light of a green waveband. For example, the blue sub-pixel SPb can be configured to emit light of a blue waveband. According to an embodiment, one pixel can include two or more green sub-pixels SPg configured to emit green light.

[0088] The red waveband can be a waveband of about 600 nm (nanometers) to about 750 nm. The green waveband can be a waveband of about 480 nm to about 560 nm. The blue waveband can be a waveband of about 370 nm to about 460 nm.

[0089] In an embodiment of the present disclosure, each of the sub-pixels configuring one pixel can be electrically connected to a corresponding data line. For example, the red sub-pixel SPr, the green sub-pixel SPg, and the blue sub-pixel SPb of each of the first pixel PXL1 and the third pixel PXL3 can be electrically connected to three consecutive data lines DL(3k-2), DL(3k-1), and DL(3k) (k is an integer of 1 or more), respectively. For example, the red sub-pixel SPr, the green sub-pixel SPg, and the blue sub-pixel SPb of each of the second pixel PXL2 and the fourth pixel PXL4 can be electrically connected to three consecutive data lines DL(3k+1), DL(3k+2), and DL(3k+3), respectively.

[0090] In an embodiment of the disclosure, the sub-pixels configuring one pixel can be electrically connected to one reference voltage line. For example, the red sub-pixels SPr, the green sub-pixels SPg, and the blue sub-pixels SPb of the first pixel PXL1 and the third pixel PXL3 can be electrically connected to the kth reference voltage line RVLk (hereinafter, also referred to as the reference voltage line RVLk). For example, the red sub-pixels SPr, the green sub-pixels SPg, and the blue sub-pixels SPb of the second pixel PXL2 and the fourth pixel PXL4 can be electrically connected to the (k+1)th reference voltage line RVL(k+1). However, embodiments of the disclosure are not limited thereto. For example, the red sub-pixels SPr, the green sub-pixels SPg, and the blue sub-pixels SPb configuring one pixel can be electrically connected to different reference voltage lines, respectively.

[0091] In an embodiment of the disclosure, the sub-pixels configuring one pixel can be electrically connected to one scan line. For example, the red sub-pixels SPr, the green sub-pixels SPg, and the blue sub-pixels SPb of the first pixel PXL1 and the second pixel PXL2 can be electrically connected to the ith scan line SLi (i is an integer of 1 or more). For example, the red sub-pixels SPr, the green sub-pixels SPg, and the blue sub-pixels SPb of the third pixel PXL3 and the fourth pixel PXL4 can be electrically connected to the (i+1)th scan line SL(i+1).

[0092] In an embodiment of the disclosure, the pixels electrically connected to the same scan line can be understood to be positioned in the same row. Referring to Figure 2 , the first pixel PXL1 and the second pixel PXL2 connected to the ith scan line SLi can be understood to be positioned in the same row (for example, the ith row). The third pixel PXL3 and the fourth pixel PXL4 connected to the (i+1)th scan line SLi+1 can be understood to be positioned in the same row (for example, the (i+1)th row).

[0093] In an embodiment of the disclosure, the pixels electrically connected to the same data line can be understood to be positioned in the same column. Referring to Figure 2 , the first pixel PXL1 and the third pixel PXL3 connected to the (3k-2)th data line DL(3k-2), the (3k-1)th data line DL(3k-1), and the 3kth data line DL(3k) can be understood to be positioned in the same column (or the kth column). The second pixel PXL2 and the fourth pixel PXL4 connected to the (3k+1)th data line DL(3k+1), the (3k+2)th data line DL(3k+2), and the (3k+3)th data line DL(3k+3) can be understood to be positioned in the same column (or the (k+1)th column).

[0094] In an embodiment of the disclosure, a plurality of pixels can be disposed in two or more rows (or pixel rows) and two or more columns (or pixel columns) in the display area AA.

[0095] Figure 3 is an equivalent circuit diagram of a sub-pixel SP according to an embodiment of the disclosure.

[0096] A sub-pixel SP according to an embodiment of the disclosure can include a light emitting element LE and a pixel circuit SPC configured to supply a current (e.g., a driving current) to the light emitting element LE. The pixel circuit SPC can include two or more switching elements (e.g., transistors) and one or more storage elements (e.g., capacitors).

[0097] Referring to Figure 3 , a pixel circuit SPC according to an embodiment of the disclosure can include a first transistor TR1, a second transistor TR2, a third transistor TR3, and a storage capacitor Cst. However, embodiments of the disclosure are not limited thereto, and the configuration of the pixel circuit SPC can be implemented freely according to the design of one of ordinary skill in the art. Hereinafter, an embodiment in which the pixel circuit SPC includes the first to third transistors TR1 to TR3 and the storage capacitor Cst is described as an example.

[0098] The light emitting element LE can include a first electrode (one of an anode and a cathode), a second electrode (the other of the anode and the cathode), and a light emitting layer. For example, the light emitting layer can include an organic material and / or an inorganic material. For example, the light emitting element LE can be implemented as an organic light emitting diode having an organic light emitting layer. For example, the light emitting element LE can be implemented as an inorganic light emitting diode having an inorganic light emitting layer. For example, the light emitting layer of the light emitting element LE can include nanorods.

[0099] Referring to Figure 3 , the first electrode (e.g., an anode) of the light emitting element LE can be electrically connected to the second node N2. The second electrode (e.g., a cathode) of the light emitting element LE can be electrically connected to the second power line PL2.

[0100] A second power voltage ELVSS is applied to the second power line PL2. For example, the second power voltage ELVSS can be a ground voltage or a low potential voltage having a level lower than that of the ground voltage.

[0101] The first transistor TR1 can be configured to switch an electrical connection between the first power line PL1 and the second node N2. The first transistor TR1 can include a gate electrode, a first electrode (one of a source electrode and a drain electrode), and a second electrode (the other of the source electrode and the drain electrode). The gate electrode of the first transistor TR1 can be electrically connected to the first node N1. The first electrode (for example, the drain electrode) of the first transistor TR1 can be electrically connected to the first power line PL1. The first power voltage ELVDD can be applied to the first power line PL1. For example, the first power voltage ELVDD can be a high potential voltage. The second electrode (for example, the source electrode) of the first transistor TR1 can be electrically connected to the second node N2. The data voltage Vdata or a voltage corresponding to the data voltage Vdata can be applied to the first node N1. A current corresponding to the voltage applied to the first node N1 can flow through the first transistor TR1.

[0102] The second transistor TR2 can be configured to switch an electrical connection between the data line DLj (j is an integer of 1 or more) and the first node N1. The operation timing of the second transistor TR2 can be controlled by the first scan signal SCAN[i]. The first scan signal SCAN[i] can be applied to the i-th first scan line SCLi (hereinafter, abbreviated as the first scan line SCLi). The second transistor TR2 can be turned on in response to the first scan signal SCAN[i] at an on level. When the second transistor TR2 is turned on, the data voltage Vdata can be applied to the first node N1.

[0103] The third transistor TR3 can be configured to switch an electrical connection between the second node N2 and the reference voltage line RVLk. The operation timing of the third transistor TR3 can be controlled by the second scan signal SENSE[i]. The second scan signal SENSE[i] can be applied to the i-th second scan line SNLi (hereinafter, abbreviated as the second scan line SNLi). The third transistor TR3 can be turned on in response to the second scan signal SENSE[i] at an on level. When the third transistor TR3 is turned on, the second node N2 and the reference voltage line RVLk can be electrically connected. The voltage applied to the reference voltage line RVLk can be stored in the line capacitor Cline. In an embodiment, the line capacitor Cline includes one end connected to the reference voltage line RVLk and the other end connected to the ground terminal GND. The line capacitor Cline can be an intentionally and physically formed capacitor element, rather than a parasitic capacitor. However, embodiments of the present disclosure are not limited thereto.

[0104] Referring to Figure 3Each of the first to third transistors TR1 to TR3 can be a transistor including an N-type semiconductor layer. In this case, the on-level voltage of the first to third transistors TR1 to TR3 can be a high-level voltage (e.g., gate high voltage), and the off-level voltage can be a low-level voltage (e.g., gate low voltage). According to an embodiment, at least one of the first to third transistors TR1 to TR3 can include a P-type semiconductor layer. In this case, the on-level voltage of the transistor including the P-type semiconductor layer can be a low-level voltage (e.g., gate low voltage), and the off-level voltage can be a high-level voltage (e.g., gate high voltage).

[0105] At least one of the first to third transistors TR1 to TR3 can include a semiconductor layer of amorphous silicon ("a-Si"). At least one of the first to third transistors TR1 to TR3 can include a semiconductor layer of polysilicon ("poly-Si"). At least one of the first to third transistors TR1 to TR3 can include an oxide semiconductor layer including a metal oxide.

[0106] The storage capacitor Cst can be configured to maintain a voltage difference between the first node N1 and the second node N2. The storage capacitor Cst can include one side electrode electrically connected to the first node N1 and the other side electrode electrically connected to the second node N2. The storage capacitor Cst can be a capacitor element intentionally and physically formed, rather than a parasitic capacitor.

[0107] The output circuit 122 can output the data voltage Vdata to the data line DLj. The analog voltage Vsen applied to the reference voltage line RVLk can be input to the sensing circuit 124.

[0108] Figure 4 FIG. 4 is a diagram illustrating a sensing circuit 124 in an embodiment of the disclosure.

[0109] The sensing circuit 124 can be included in the data driving circuit 120. The sensing circuit 124 can receive an analog voltage Vsen from a plurality of reference voltage lines. In an embodiment, the sensing circuit 124 can be connected to the k-th reference voltage line RVLk and the (k+1)-th reference voltage line RVL(k+1). The sensing circuit 124 can convert the input analog voltage Vsen into a sensing value Dsen corresponding thereto. The sensing circuit 124 can output the converted sensing value Dsen.

[0110] Referring to Figure 4 The sensing circuit 124 can include a first switching element SW1, a second switching element SW2, a multiplexer MUX, a sensing capacitor Csen, and an analog-to-digital converter ("ADC") 410, etc.

[0111] The first switching element SW1 can be configured to switch electrical connection between the third node N3 and the reference voltage lines RVLk and RVL(k+1). The operation timing of the first switching element SW1 can be controlled by the reference voltage switching signal SPRE. When the first switching element SW1 is turned on in response to the reference voltage switching signal SPRE (e.g., the reference voltage switching signal SPRE at an on level), the reference voltage VREF can be applied to the reference voltage lines RVLk and RVL(k+1). The first switching element SW1 can be implemented as a transistor.

[0112] The second switching element SW2 can be configured to switch electrical connection between the reference voltage lines RVLk and RVL(k+1) and the sensing capacitor Csen. The operation timing of the second switching element SW2 can be controlled by the sampling control signal SAMP. When the second switching element SW2 is turned on by the sampling control signal SAMP (e.g., the sampling control signal SAMP at an on level), the analog voltage Vsen or a voltage corresponding thereto can be stored in the sensing capacitor Csen.

[0113] The sensing capacitor Csen can include one side electrode electrically connected to the second switching element SW2 and the other side electrode to which a constant voltage is applied (or grounded). A voltage corresponding to the analog voltage Vsen can be applied to the one side electrode of the sensing capacitor Csen. The analog voltage Vsen or a voltage corresponding thereto can be stored in the sensing capacitor Csen.

[0114] The multiplexer MUX can be configured to switch electrical connection between the sensing capacitor Csen and the analog-digital converter 410. For example, the multiplexer MUX can be implemented as an N:1 multiplexer including two or more input terminals (e.g., N (N is an integer of 2 or more) input terminals) and one output terminal. The operation timing of the multiplexer MUX can be controlled by the hold control signal HOLD. When the multiplexer MUX is turned on by the hold control signal HOLD (e.g., the hold control signal HOLD at an on level), a voltage can be applied from the sensing capacitor Csen connected to the corresponding input terminal. The voltage output from the multiplexer MUX can be input to the analog-digital converter 410.

[0115] The analog-digital converter 410 can be configured to convert an analog voltage into a digital value corresponding thereto. For example, referring to Figure 4 , the analog-digital converter 410 can receive the analog voltage output from the multiplexer MUX and convert the input analog voltage into a digital value corresponding thereto. The analog-digital converter 410 can output the converted digital value. The output digital value can correspond to the sensed value Dsen. The output sensed value Dsen can be input to the timing controller 140 described above (refer toFigure 1 ).

[0116] Figure 5 FIG. 1 is a diagram illustrating that an image IMG is displayed in a display panel 110 in an ON state.

[0117] When the display device 100 (refer to Figure 1 ) is in the ON state, the image IMG can be displayed in the display panel 110.

[0118] Referring to Figure 5 , a p-th reference voltage line RVLp and a q-th reference voltage line RVLq can be disposed in the display panel 110. Here, the p-th reference voltage line RVLp can indicate odd columns 510. The q-th reference voltage line RVLq can indicate even columns 520.

[0119] The p-th reference voltage line RVLp can be connected to a first red sub-pixel SPr1, a first green sub-pixel SPg1, and a first blue sub-pixel SPb1. The q-th reference voltage line RVLq can be connected to a second red sub-pixel SPr2, a second green sub-pixel SPg2, and a second blue sub-pixel SPb2. The first red sub-pixel SPr1, the first green sub-pixel SPg1, the first blue sub-pixel SPb1, the second red sub-pixel SPr2, the second green sub-pixel SPg2, and the second blue sub-pixel SPb2 can be positioned in odd rows 530.

[0120] The p-th reference voltage line RVLp can be connected to a third red sub-pixel SPr3, a third green sub-pixel SPg3, and a third blue sub-pixel SPb3. The q-th reference voltage line RVLq can be connected to a fourth red sub-pixel SPr4, a fourth green sub-pixel SPg4, and a fourth blue sub-pixel SPb4. The third red sub-pixel SPr3, the third green sub-pixel SPg3, the third blue sub-pixel SPb3, the fourth red sub-pixel SPr4, the fourth green sub-pixel SPg4, and the fourth blue sub-pixel SPb4 can be positioned in even rows 540.

[0121] The odd columns 510 and the even columns 520 can extend in the second direction DR2 in general. The odd rows 530 and the even rows 540 can extend in the first direction DR1 in general.

[0122] When the display device 100 (refer to Figure 1 ) is in the ON state, the sub-pixels disposed in the display panel 110 can display the image IMG. While the display panel 110 displays the image IMG, the temperature of the display panel 110 can increase.

[0123] Figure 6 FIG. 2 is a diagram illustrating that no image is displayed in the display panel 110 in an OFF state.

[0124] Referring to Figure 6 When the display device 100 (referring to Figure 1 ) is in the off state OFF, the sub-pixels provided in the display panel 110 can not display an image. While the image is not displayed in the display panel 110, the temperature of the display panel 110 can gradually decrease.

[0125] In the off state OFF, the sub-pixels can be sensed. According to the result of sensing the sub-pixels, a characteristic value change of a circuit element included in the sub-pixels can be compensated for. For example, referring to Figure 3 A change in a characteristic value (e.g., a threshold voltage) of the first transistor TR1 of the sub-pixel SP can be compensated for.

[0126] Meanwhile, when the display device 100 (referring to Figure 1 ) is switched from the on state ON (referring to Figure 5 ) to the off state OFF, the temperature of the display panel 110 can gradually decrease. In the above case, it can be possible to sense some of the sub-pixels when the temperature is high, and it can be possible to sense some of the sub-pixels when the temperature is low. In light of this, the reliability of sensing can decrease. Therefore, there is a need for a method of sensing the sub-pixels, which can increase the reliability of sensing even in a condition in which the temperature of the display panel 110 gradually decreases.

[0127] Figure 7A is a diagram illustrating a method 710 of sensing sub-pixels according to an embodiment. Figure 7B is a diagram illustrating a method 720 of sensing sub-pixels according to another embodiment.

[0128] Referring to Figure 6 and Figure 7A , the method 710 of sensing sub-pixels according to an embodiment can sense (e.g., sequentially sense) the first color sub-pixels positioned in the odd-numbered columns 510, the second color sub-pixels positioned in the odd-numbered columns 510, the third color sub-pixels positioned in the odd-numbered columns 510, the first color sub-pixels positioned in the even-numbered columns 520, the second color sub-pixels positioned in the even-numbered columns 520, and the third color sub-pixels positioned in the even-numbered columns 520.

[0129] In the above embodiment, the first red sub-pixel SPr1, the third red sub-pixel SPr3, the first green sub-pixel SPg1, the third green sub-pixel SPg3, the first blue sub-pixel SPb1, the third blue sub-pixel SPb3, the second red sub-pixel SPr2, the fourth red sub-pixel SPr4, the second green sub-pixel SPg2, the fourth green sub-pixel SPg4, the second blue sub-pixel SPb2, and the fourth blue sub-pixel SPb4 can be sequentially sensed.

[0130] Referring to Figure 6 andFigure 7B The method 720 of sensing subpixels according to another embodiment can sense (e.g., sequentially sense) the first color subpixel positioned in the even column 520, the second color subpixel positioned in the even column 520, the third color subpixel positioned in the even column 520, the first color subpixel positioned in the odd column 510, the second color subpixel positioned in the odd column 510, and the third color subpixel positioned in the odd column 510.

[0131] However, Figure 7A and Figure 7B Each of the methods 710 and 720 of sensing subpixels shown in FIGS. 7A and 7B is merely an example, and embodiments of the disclosure are not limited thereto.

[0132] Figure 8 is a graph showing a method 800 of detecting a sensed value in an embodiment of the display panel 110. Figure 7A Referring to

[0133] , Figure 8 , Figure 8 shows a sensed value Dsen detected in an embodiment of the display panel 110. According to the method 800 of detecting a sensed value, the sensed value SENr1 of the first red subpixel, the sensed value SENr3 of the third red subpixel, the sensed value SENG1 of the first green subpixel, the sensed value SENG3 of the third green subpixel, the sensed value SENb1 of the first blue subpixel, the sensed value SENb3 of the third blue subpixel, the sensed value SENr2 of the second red subpixel, the sensed value SENr4 of the fourth red subpixel, the sensed value SENG2 of the second green subpixel, the sensed value SENG4 of the fourth green subpixel, the sensed value SENb2 of the second blue subpixel, and the sensed value SENb4 of the fourth blue subpixel can be sequentially detected. Figure 7A

[0134] Figure 9 is a graph showing a temperature measurement point TPNT and a sensed value of the display panel 110.

[0135] Referring to Figure 9 , a temperature can be measured at a predetermined point of the display panel 110. The predetermined point at which the temperature is measured in the display panel 110 can be the temperature measurement point TPNT.

[0136] The location of the temperature measurement point TPNT can be determined freely according to the design of one of ordinary skill in the art.

[0137] Meanwhile, when the display panel 110 does not display an image, the temperature of the display panel 110 can gradually decrease. In this case, the characteristics of the sensed value detected in a state in which the temperature is high and the characteristics of the sensed value detected in a state in which the temperature is low can be different from each other. In this case, the reliability of sensing and compensation can decrease.​

[0138] For example, in an embodiment in which the first red sub-pixel SPr1 is sensed first and the second red sub-pixel SPr2 is sensed later (for example, refer to the method 710 of sensing a sub-pixel of FIG. 7B) Figure 7A In this case, even if the first red sub-pixel SPr1 and the second red sub-pixel SPr2 are adjacent to each other, there can be a relatively large difference between the sensed value SENr1 of the first red sub-pixel SPr1 and the sensed value SENr2 of the second red sub-pixel SPr2.

[0139] As a method for solving this problem, a method of sensing a sub-pixel in a state in which the temperature of the display panel 110 becomes sufficiently low in total can be considered. However, according to this method, there is a problem in that it takes a relatively long time for the temperature of the display panel 110 to become sufficiently low. In addition, since the possibility of the display panel 110 displaying an image again before the sensing and compensation of the sub-pixel are completed increases, there can be a problem in that the display quality of the display panel 110 is degraded.

[0140] Therefore, a method of correcting a sensed value detected in a state in which the temperature of the display panel 110 is high using a sensed value detected in a state in which the temperature of the display panel 110 is low and compensating a sub-pixel based on the corrected sensed value to improve the reliability of compensation is desired.

[0141] Figure 10 is a graph showing a change in temperature at the temperature measurement point TPNT of Figure 9 over time.

[0142] Referring to Figure 10 , Figure 9 The temperature of the temperature measurement point TPNT of the display panel can gradually decrease after the off state OFF.

[0143] The temperature of the display panel can rapidly change in a 0th period PR0 after the off state OFF. The 0th period PR0 can be a period in which the temperature of the display panel rapidly decreases, and during this period, a sub-pixel can not be sensed. The 0th period PR0 can be a cooling period. In an embodiment, the 0th period PR0 can be omitted. In an embodiment, the length of the 0th period PR0 can be about 1 minute. However, embodiments of the disclosure are not limited thereto. The length of the 0th period PR0 can be freely set by a person skilled in the art, taking into account the heat dissipation performance of the display panel, etc.

[0144] After the off state OFF, a first period PR1 to a sixth period PR6 can be provided. The first period PR1 to the sixth period PR6 can be periods for sensing sub-pixels of the same color positioned in an odd-numbered column or an even-numbered column, respectively. Hereinafter, the present disclosure is described with reference to Figure 7A , Figure 9 and Figure 10 .

[0145] In the first period PR1, first color sub-pixels positioned in the odd-numbered column 510 can be sensed. For example, in the first period PR1, a first red sub-pixel SPr1 and a third red sub-pixel SPr3 can be sequentially sensed.

[0146] In the second period PR2, second color sub-pixels positioned in the odd-numbered column 510 can be sensed. For example, in the second period PR2, a first green sub-pixel SPg1 and a third green sub-pixel SPg3 can be sequentially sensed.

[0147] In the third period PR3, third color sub-pixels positioned in the odd-numbered column 510 can be sensed. For example, in the third period PR3, a first blue sub-pixel SPb1 and a third blue sub-pixel SPb3 can be sequentially sensed.

[0148] In the fourth period PR4, first color sub-pixels positioned in the even-numbered column 520 can be sensed. For example, in the fourth period PR4, a second red sub-pixel SPr2 and a fourth red sub-pixel SPr4 can be sequentially sensed.

[0149] In the fifth period PR5, second color sub-pixels positioned in the even-numbered column 520 can be sensed. For example, in the fifth period PR5, a second green sub-pixel SPg2 and a fourth green sub-pixel SPg4 can be sequentially sensed.

[0150] In the sixth period PR6, third color sub-pixels positioned in the even-numbered column 520 can be sensed. For example, in the sixth period PR6, a second blue sub-pixel SPb2 and a fourth blue sub-pixel SPb4 can be sequentially sensed.

[0151] The temperature at the time point at which the sub-pixels are sensed in each of the first period PR1 to the sixth period PR6 can gradually decrease. For example, the temperature at the time point at which the first red sub-pixel SPr1 is sensed can be a first temperature P1, and the temperature at the time point at which the third red sub-pixel SPr3 is sensed can be a second temperature P2. The second temperature P2 can be lower than the first temperature P1.

[0152] The temperature sensed at the time point where the third red sub-pixel SPr3 is located in the first period PR1 can be the second temperature P2, and the temperature sensed at the time point where the first green sub-pixel SPg1 is located in the second period PR2 can be the third temperature P3. The third temperature P3 can be lower than the second temperature P2. Similarly, descriptions about the fourth temperature P4, the fifth temperature P5, the sixth temperature P6, the seventh temperature P7, the eighth temperature P8, the ninth temperature P9, the tenth temperature P10, the eleventh temperature P11, and the twelfth temperature P12 will be omitted.

[0153] After a predetermined time has elapsed, the temperature of the temperature measurement point TPNT (refer to Figure 9 ) can converge (e.g., substantially converge). Referring to Figure 10 , after a time corresponding to the convergence point CVP has elapsed, the change in the temperature measured at the temperature measurement point TPNT can be small.

[0154] Figure 11 is a graph 1100 showing the average sensed value 1160 for each row calculated in the first period PR1.

[0155] Referring to Figure 11 , in the graph (table) 1100, items of the sensing period 1110, the sensing object 1120, the row 1130, the column 1140, the sensed value 1150, the average sensed value (average value for each row) 1160 for each row, and their values can be included.

[0156] Figure 11 The graph 1100 of FIG. 1100 specifically shows a case where the sensing period 1110 is the first period PR1.

[0157] The sensing object 1120 indicates sub-pixels sensed in the sensing period 1110. In the first period PR1, red sub-pixels positioned in odd-numbered columns can be sensed.

[0158] The row 1130 indicates a row in which a sensed sub-pixel is positioned. Referring to Figure 1 , sensing can be performed on m rows.

[0159] The column 1140 indicates a column in which a sensed sub-pixel is positioned. Referring to the sensing object 1120, sensing can be performed on odd-numbered columns. For example, when n is even, sensing can be performed on the first column, the third column, and the (n-1)th column, etc.

[0160] Sensing value 1150 indicates the individual sensing values ​​Dsen obtained by sensing the sub-pixels located in the corresponding regions. For example, the sensing value obtained by sensing the red sub-pixels located in the first row and first column can be referred to as "Dsen_r_1_1". The sensing value obtained by sensing the red sub-pixels located in the first row and third column can be referred to as "Dsen_r_1_3". The sensing value obtained by sensing the red sub-pixels located in the first row and (n-1)th column can be referred to as "Dsen_r_1_n-1".

[0161] The average sense value 1160 for each row can be a value calculated for each row, and can indicate a representative value (e.g., the average sense value) of the sense values ​​obtained by sensing sub-pixels located in the corresponding row. For example, the average sense value 1160 for each row for red sub-pixels located in the first row can be calculated by adding all the sense values ​​"Dsen_r_1_1", "Dsen_r_1_3", and "Dsen_r_1_n-1", and dividing the value obtained by the addition by n / 2, which is the number of odd-numbered columns. For example, the average sense value for each row for red sub-pixels located in odd-numbered columns of the first row can be called "AVGr_odd_1". The average sense value for each row for red sub-pixels located in odd-numbered columns of the second row can be called "AVGr_odd_2".

[0162] Figure 12 Figure 1200 shows the average sensing values ​​calculated for each row during the first time period PR1 to the sixth time period PR6.

[0163] Reference Figure 12 In Figure (Table) 1200, there may be a sensing period 1210, a sensing object 1220, an average sensing value for each row 1230, and an average sensing value for each period (average value for each period) 1240.

[0164] The sensing period 1210 may include the first period PR1 to the sixth period PR6.

[0165] The sensing object 1220 may include sub-pixels sensed in each of the first time period PR1 to the sixth time period PR6. For example, the sensing object in the first time period PR1 may be a red sub-pixel located in an odd-numbered column. The sensing object in the second time period PR2 may be a green sub-pixel located in an odd-numbered column.

[0166] The average sensing value 1230 for each row can indicate the average sensing value for each row among the sensing values ​​calculated by sensing the sub-pixels that are the sensing objects during each time period. The average sensing value 1230 for each row corresponds to the one described above.Figure 11 the average sensing value for each row 1160.

[0167] The average sensing value for each period 1240 corresponds to an average sensing value of the average sensing values for each row calculated in the corresponding sensing period. For example, the average sensing value for each period of the first period PR1 can be calculated by adding all of "AVGr_odd_1", "AVGr_odd_2", and "AVGr_odd_m" and dividing the value obtained by the addition by m which is the number of rows. The average sensing value for each period of the first period PR1 can be referred to as "AVGr_odd". Similarly, the average sensing value for each period of the second period PR2 can be referred to as "AVGg_odd".

[0168] Referring to this, the average sensing value for each period calculated in the first period PR1 is "AVGr_odd", and the average sensing value for each period calculated in the fourth period PR4 is "AVGr_even". The difference between "AVGr_odd" and "AVGr_even" can be caused by the gradual decrease in the temperature of the display panel.

[0169] Figure 13 is a diagram 1300 showing the normalized constant for each row 1370, the corrected sensing value 1380, and the corrected average sensing value for each row (corrected average for each row) 1390, etc. calculated in the first period PR1 in the embodiment.

[0170] Referring to Figure 13 , in the diagram (table) 1300, the sensing period 1310, the sensing object 1320, the row 1330, the column 1340, the sensing value 1350, the average sensing value for each row 1360, the normalized constant for each row 1370, the corrected sensing value 1380, the corrected average sensing value for each row 1390, and the corrected average sensing value for each period (corrected average for each period) 1395, etc. can be included.

[0171] The sensing period 1310, the sensing object 1320, the row 1330, the column 1340, the sensing value 1350, and the average sensing value for each row 1360 are respectively the same as the sensing period 1110, the sensing object 1120, the row 1130, the column 1140, the sensing value 1150, and the average sensing value for each row 1160 described above in Figure 11 . The description of these is omitted.

[0172] The normalization constant 1370 for each row can be a value calculated from the average sensing value 1360 for each row. For example, the normalization constant 1370 for each row can be calculated by subtracting the average sensing value for each row of the red sub-pixel positioned in the even column of the first row from the average sensing value for each row of the red sub-pixel positioned in the odd column of the first row. In the above case, the normalization constant for each row of the first row for the red sub-pixel positioned in the odd column can be calculated as "AVGr_odd_1 - AVGr_even_1". Similarly, the normalization constant for each row of the second row can be calculated as "AVGr_odd_2 - AVGr_even_2". Thus, the normalization constant for each row can be calculated for each row.

[0173] The revised sensing value 1380 can indicate respective revised sensing values Dsen_revised of the sub-pixels positioned in the corresponding area. The revised sensing value Dsen_revised can be calculated by subtracting the normalization constant for each row of the corresponding row from the sensing value Dsen. For example, the revised sensing value of the red sub-pixel positioned in the first row and the first column can be calculated as "Dsen_r_1_1 - (AVGr_odd_1 - AVGr_even_1)". The revised sensing value of the red sub-pixel positioned in the first row and the third column can be calculated as "Dsen_r_1_3 - (AVGr_odd_1 - AVGr_even_1)". The revised sensing value of the red sub-pixel positioned in the first row and the (n-1)th column can be calculated as "Dsen_r_1_n-1 - (AVGr_odd_1 - AVGr_even_1)".

[0174] The revised average sensing value 1390 for each row can indicate a value obtained by calculating an average of the revised sensing value 1380 in units of rows. In this regard, the revised average sensing value for each row of the sub-pixel positioned in the first row among the red sub-pixels positioned in the odd column can be "AVGr_even_1". This is the same as the average sensing value for each row of the sub-pixel positioned in the first row among the red sub-pixels positioned in the even column. In this regard, with respect to the red sub-pixels positioned in the odd column and the red sub-pixels positioned in the even column, a difference in sensing value due to temperature can be substantially eliminated.

[0175] The revised average sensing value 1395 for each period can indicate an average sensing value of the revised average sensing value 1390 for each row during the corresponding period. Referring to FIG. 13, the revised average sensing value 1395 for each period can be calculated by calculating an average of the revised average sensing value 1390 for each row during each period. Figure 13, the correction average sensing value for each period of the first period PR1 can be calculated by adding all of "AVGr_even_1" and "AVGr_even_2" and the like together and dividing the value obtained by the addition by m which is the number of rows. According to this, the correction average sensing value for each period of the first period PR1 can be "AVGr_even". This is the same as "AVGr_even" which is the average sensing value for each period of the fourth period PR4 described above. Figure 12 According to this, with respect to the red sub-pixel positioned in the odd-numbered column and the red sub-pixel positioned in the even-numbered column, it is possible to substantially eliminate the difference in the sensing value due to temperature.

[0176] Figure 14 is a flowchart of a method 1400 of driving a display apparatus according to an embodiment.

[0177] Referring to Figure 14 , the method 1400 of driving a display apparatus according to an embodiment of the disclosure can include sensing and compensating for a first color sub-pixel (S1410), sensing and compensating for a second color sub-pixel (S1420), and sensing and compensating for a third color sub-pixel (S1430).

[0178] In an embodiment, while the sensing and compensating for a first color sub-pixel (S1410), the sensing and compensating for a second color sub-pixel (S1420), and the sensing and compensating for a third color sub-pixel (S1430) are performed, the temperature of the display apparatus 100 (refer to Figure 1 ) or the display panel 110 (refer to Figure 1 ) included in the display apparatus 100 can gradually decrease.

[0179] Each step can be substantially identically or similarly performed. Hereinafter, the disclosure is described based on a method of sensing and compensating for a first color sub-pixel.

[0180] Figure 15 is a flowchart of a method 1500 of sensing and compensating for a first color sub-pixel in an embodiment.

[0181] Referring to Figure 15The method 1500 of sensing and compensating for first color sub-pixels according to embodiments of the disclosure can include calculating sensing values of first color sub-pixels positioned in odd-numbered columns (S1510), calculating average sensing values for each row based on the sensing values of the first color sub-pixels positioned in the odd-numbered columns (S1520), calculating sensing values of first color sub-pixels positioned in even-numbered columns (S1530), calculating average sensing values for each row based on the sensing values of the first color sub-pixels positioned in the even-numbered columns (S1540), calculating a normalization constant for each row corresponding to a difference between each of the average sensing values for the rows of the first color sub-pixels positioned in the odd-numbered columns and a corresponding one of the average sensing values for the rows of the first color sub-pixels positioned in the even-numbered columns (S1550), calculating corrected sensing values obtained by correcting the sensing values of the first color sub-pixels positioned in the odd-numbered columns based on the calculated normalization constant for each row (S1560), and generating compensation values based on the corrected sensing values of the first color sub-pixels positioned in the odd-numbered columns and the sensing values of the first color sub-pixels positioned in the even-numbered columns (S1570), etc.

[0182] Figure 16 is a block diagram of a timing controller 140 according to embodiments.

[0183] Referring to Figure 16 The timing controller 140 according to embodiments of the disclosure can include a normalization unit 1610 and a compensation unit 1620. Each of the normalization unit 1610 and the compensation unit 1620 can be implemented as a circuit (e.g., an integrated circuit or a logic circuit, etc.).

[0184] The normalization unit 1610 can receive sensing values Dsen.

[0185] Further referring to Figure 13 The normalization unit 1610 can generate, based on the received sensing values Dsen, average sensing values 1360 for each row, normalization constants 1370 for each row, and corrected sensing values 1380, etc.

[0186] Further referring to Figure 15, the normalization unit 1610 can perform calculating the sensed values of the first color sub-pixels positioned in the odd-numbered columns (S1510), calculating the average sensed values for each row based on the sensed values of the first color sub-pixels positioned in the odd-numbered columns (S1520), calculating the sensed values of the first color sub-pixels positioned in the even-numbered columns (S1530), calculating the average sensed values for each row based on the sensed values of the first color sub-pixels positioned in the even-numbered columns (S1540), calculating a normalization constant for each row corresponding to a difference between each of the average sensed values for each row of the first color sub-pixels positioned in the odd-numbered columns and a corresponding one of the average sensed values for each row of the first color sub-pixels positioned in the even-numbered columns (S1550), and calculating a revised sensed value obtained by revising the sensed values of the first color sub-pixels positioned in the odd-numbered columns based on the calculated normalization constant for each row (S1560), etc.

[0187] The compensation unit 1620 can receive the first image data DATA1, the revised sensed value Dsen_revised, and the sensed value Dsen, etc. In an embodiment, the revised sensed value Dsen_revised received by the compensation unit 1620 can include the revised sensed values of the first color sub-pixels positioned in the odd-numbered columns. In an embodiment, the sensed value Dsen received by the compensation unit 1620 can include the sensed values of the first color sub-pixels positioned in the even-numbered columns.

[0188] Further referring to Figure 15 , the compensation unit 1620 can perform generating a compensation value based on the revised sensed values of the first color sub-pixels positioned in the odd-numbered columns and the sensed values of the first color sub-pixels positioned in the even-numbered columns (S1570).

[0189] The compensation unit 1620 can compensate the received first image data DATA1 based on the revised sensed value Dsen_revised or the sensed value Dsen, and output the compensated value as second image data DATA2.

[0190] Accordingly, the influence due to the temperature can be mitigated at the point in time at which the sub-pixels are sensed, and the reliability of the compensation can be improved.

[0191] Figure 17 is a diagram 1700 illustrating the normalization constant 1770 for each row calculated in the first period PR1, the revised sensed value 1780, and the revised average sensed value 1790 for each row, etc. in another embodiment.

[0192] Referring to Figure 17In the graph (table) 1700, a sensing period 1710, a sensing object 1720, a row 1730, a column 1740, a sensed value 1750, an average sensed value for each row 1760, a normalization constant for each row 1770, a corrected sensed value 1780, a corrected average sensed value for each row 1790, and a corrected average sensed value for each period 1795, etc. can be included.

[0193] The sensing period 1710, the sensing object 1720, the row 1730, the column 1740, the sensed value 1750, and the average sensed value for each row 1760 are respectively the same as the sensing period 1110, the sensing object 1120, the row 1130, the column 1140, the sensed value 1150, and the average sensed value for each row 1160 described above in the graph (table) 1100. Figure 11

[0194] The normalization constant for each row 1770 can be a value calculated from the average sensed value for each row 1760. For example, the normalization constant for each row 1770 can be calculated by subtracting a predetermined (e.g., pre-stored) average sensed value for each row of a red sub-pixel from the average sensed value for each row of the red sub-pixel positioned in an odd column of a first row. In the above case, the normalization constant for each row of the first row of the red sub-pixel positioned in the odd column can be calculated as "AVGr_odd_1 - AVGr_pre_1". Similarly, the normalization constant for the second row can be calculated as "AVGr_odd_2 - AVGr_pre_2". Thus, the normalization constant for each row can be calculated for each row.

[0195] For example, the pre-stored average sensed value for each row of the sub-pixel can be measured and pre-stored after a time corresponding to a convergence point CVP of the graph (table) 1700. Figure 10 However, embodiments of the present disclosure are not limited thereto.

[0196] ​The correction sense value 1780 indicates the individual correction sense values ​​Dsen_revised for each sub-pixel located in the corresponding region. The correction sense value Dsen_revised can be calculated by subtracting the normalization constant for each row from the sense value Dsen. For example, the correction sense value for a red sub-pixel located in the first row and first column can be calculated as "Dsen_r_1_1 - (AVGr_odd_1 - AVGr_pre_1)". The correction sense value for a red sub-pixel located in the first row and third column can be calculated as "Dsen_r_1_3 - (AVGr_odd_1 - AVGr_pre_1)". The correction sense value for a red sub-pixel located in the first row and (n-1)th column can be calculated as "Dsen_r_1_n-1 - (AVGr_odd_1 - AVGr_pre_1)".

[0197] The corrected average sense value 1790 for each row can indicate the value obtained by calculating the average of the corrected sense values ​​1780 on a row-by-row basis. Based on this, the corrected average sense value for each row for a sub-pixel positioned in the first row among the red sub-pixels positioned in odd-numbered columns could be "AVGr_pre_1". This is the same as the pre-stored average sense value for each row for the sub-pixel.

[0198] exist Figure 17 In one embodiment, the correction sensing value 1780 can be calculated relative to both sub-pixels located in odd-numbered columns and sub-pixels located in even-numbered columns. On the other hand, as described above... Figure 13 In one embodiment, the correction sense value 1380 may be calculated only relative to sub-pixels located in odd-numbered columns, and the correction sense value 1380 may not be calculated relative to sub-pixels located in even-numbered columns.

[0199] The corrected average sense value 1795 for each time period can indicate the average sense value of the corrected average sense value 1790 for each row during the corresponding time period. (Refer to...) Figure 17, the correction average sensing value for each period of the first period PR1 can be calculated by adding all of "AVGr_pre_1" and "AVGr_pre_2" and the like together and dividing the value obtained by the addition by m which is the number of rows. According to this, the correction average sensing value for each period of the first period PR1 can be "AVGr_pre". Similarly, the correction average sensing value 1795 for each period can be calculated in the same method with respect to the red sub-pixels positioned in the even-numbered columns, and the value of the correction average sensing value 1795 for each period can be the same as "AVGr_pre". According to this, with respect to the red sub-pixels positioned in the odd-numbered columns and the red sub-pixels positioned in the even-numbered columns, the difference in the sensing value due to temperature can be substantially eliminated.

[0200] Figure 18 FIG. 18 is a flowchart illustrating a method 1800 of sensing and compensating for first color sub-pixels in another embodiment.

[0201] Referring to Figure 18 , the method 1800 of sensing and compensating for first color sub-pixels can include calculating sensing values of the first color sub-pixels positioned in the odd-numbered columns (S1810), calculating average sensing values for each row based on the sensing values of the first color sub-pixels positioned in the odd-numbered columns (S1820), calculating sensing values of the first color sub-pixels positioned in the even-numbered columns (S1830), calculating average sensing values for each row based on the sensing values of the first color sub-pixels positioned in the even-numbered columns (S1840), calculating a normalization constant for each row corresponding to a difference between each of the average sensing values for each row of the first color sub-pixels positioned in the odd-numbered columns and a pre-stored average sensing value for each row of the first color sub-pixels (S1850), calculating a normalization constant for each row corresponding to a difference between each of the average sensing values for each row of the first color sub-pixels positioned in the even-numbered columns and a pre-stored average sensing value for each row of the first color sub-pixels (S1860), calculating correction sensing values obtained by correcting the sensing values of the first color sub-pixels positioned in the odd-numbered columns and the even-numbered columns based on the calculated normalization constant for each row (S1870), and generating compensation values based on the correction sensing values of the first color sub-pixels positioned in the odd-numbered columns and the correction sensing values of the first color sub-pixels positioned in the even-numbered columns (S1880), and the like.

[0202] Figure 19 FIG. 17 is a block diagram of a timing controller 140 according to another embodiment.

[0203] Referring to Figure 19 , the timing controller 140 according to an embodiment of the disclosure can include a normalization unit 1610a and a compensation unit 1620a.

[0204] The normalization unit 1610a can include a memory 1910. A look-up table LUT or a table LUT can be stored in the memory 1910. In an embodiment, in the look-up table LUT, the average sensing value for each row of the first color sub-pixel, the average sensing value for each row of the second color sub-pixel, and the average sensing value for each row of the third color sub-pixel can be stored. The normalization unit 1610a can receive the sensing value Dsen and generate a revised sensing value Dsen_revised by referring to the values stored in the memory 1910. The look-up table LUT can include at least one of the graphs 1100, 1200, 1300, and 1700 described with reference to FIGS. 11, 12, 13, and 17. Figure 11 to Figure 13 and Figure 17 at least one of the graphs 1100, 1200, 1300, and 1700 described with reference to FIGS. 11, 12, 13, and 17.

[0205] Further referring to Figure 17 , the normalization unit 1610a can generate the average sensing value for each row 1760, the normalization constant for each row 1770, and the revised sensing value 1780, etc. based on the received sensing value Dsen.

[0206] Further referring to Figure 18 , the normalization unit 1610a can perform calculating the sensing value of the first color sub-pixel positioned in the odd-numbered column (S1810), calculating the average sensing value for each row based on the sensing value of the first color sub-pixel positioned in the odd-numbered column (S1820), calculating the sensing value of the first color sub-pixel positioned in the even-numbered column (S1830), calculating the average sensing value for each row based on the sensing value of the first color sub-pixel positioned in the even-numbered column (S1840), calculating the normalization constant for each row corresponding to each of the difference between the average sensing value for each row of the first color sub-pixel positioned in the odd-numbered column and the pre-stored average sensing value for each row of the first color sub-pixel (S1850), calculating the normalization constant for each row corresponding to each of the difference between the average sensing value for each row of the first color sub-pixel positioned in the even-numbered column and the pre-stored average sensing value for each row of the first color sub-pixel (S1860), and calculating the revised sensing value obtained by revising the sensing value of the first color sub-pixel positioned in the odd-numbered column and the even-numbered column based on the calculated normalization constant for each row (S1870), etc.

[0207] The compensation unit 1620a can receive the first image data DATA1 and the revised sensing value Dsen_revised, etc. In an embodiment, the revised sensing value Dsen_revised received by the compensation unit 1620a can include the revised sensing value of the first color sub-pixel positioned in the odd-numbered column. In an embodiment, the revised sensing value Dsen_revised received by the compensation unit 1620a can include the revised sensing value of the first color sub-pixel positioned in the even-numbered column.

[0208] Further referring to Figure 18 , the compensation unit 1620a can generate a compensation value based on the revised sensing value of the first color sub-pixel positioned in the odd-numbered column and the revised sensing value of the first color sub-pixel positioned in the even-numbered column (S1880).

[0209] The compensation unit 1620a can compensate the received first image data DATA1 based on the revised sensing value Dsen_revised and output the compensated value as second image data DATA2.

[0210] Accordingly, the influence due to the temperature can be mitigated at the point in time at which the sub-pixel senses, and the reliability of the compensation can be improved.

[0211] Figure 20 is a block diagram of an electronic device 2000 according to an embodiment of the disclosure.

[0212] Referring to Figure 20 The electronic device 2000 described above can include the electronic device DS described above (refer to Figure 1 ).

[0213] The electronic device 2000 can output various information through a display module 2040 in an operating system. When the processor 2010 executes an application program stored in the memory 2020, the display module 2040 can provide the application program information to a user of the electronic device 2000 through a display panel 2041.

[0214] As another example, when personal information authentication is performed in the display module 2040, the fingerprint sensor 2061-1 can acquire input fingerprint information as input data. The processor 2010 can compare the input data acquired through the fingerprint sensor 2061-1 with authentication data stored in the memory 2020 and execute an application program according to a comparison result. The display module 2040 can display information executed according to the logic of the application program through the display panel 2041.

[0215] As still another example, when a music streaming icon displayed in the display module 2040 is selected, the processor 2010 can acquire a user input through the input sensor 2061-2 and activate a music streaming application stored in the memory 2020. When a music execution command is input in the music streaming application, the processor 2010 can activate the sound output module 2063 to provide sound information corresponding to the music execution command to the user.

[0216] In the above, the operation of the electronic device 2000 is briefly described. In the following, the configuration of the electronic device 2000 is described in more detail. Some of the configurations of the electronic device 2000 to be described later can be integrated and provided as one configuration, and one configuration can be separated into two or more configurations and provided.

[0217] Referring to Figure 20 , the electronic device 2000 can communicate with an external electronic device 2000-1 through a network (e.g., a short-range wireless communication network or a long-range wireless communication network). According to an embodiment, the electronic device 2000 can include a processor 2010, a memory 2020, an input module 2030, a display module 2040, a power module 2050, an internal module 2060, and an external module 2070, etc. According to an embodiment, at least one of the above-described components can be omitted from the electronic device 2000, or one or more other components can be added. According to an embodiment, some of the above-described components (e.g., the sensor module 2061, the antenna module 2062, and the sound output module 2063, etc.) can be integrated into another component (e.g., the display module 2040).

[0218] The processor 2010 can execute software to control at least one other component (e.g., a hardware or software component) of the electronic device 2000 connected to the processor 2010 and perform various data processing or operations. According to an embodiment, as at least a part of the data processing or operations, the processor 2010 can store a command or data received from another component (e.g., the input module 2030, the sensor module 2061, or the communication module 2073) in the volatile memory 2021 and process the command or data stored in the volatile memory 2021. The processed result data can be stored in the non-volatile memory 2022.

[0219] The processor 2010 can include a main processor 2011 and an auxiliary processor 2012. The main processor 2011 can include at least one of a central processing unit ("CPU") 2011-1 and an application processor ("AP") 2011-2. The main processor 2011 can further include one or more of a graphic processing unit ("GPU") 2011-3, a communication processor ("CP"), and an image signal processor ("ISP"). The main processor 2011 can further include a neural processing unit ("NPU") 2011-4. The NPU 2011-4 is a processor specialized in processing an artificial intelligence model, and the artificial intelligence model can be generated through machine learning. The artificial intelligence model can include multiple artificial neural network layers. The artificial neural network can be a deep neural network ("DNN"), a convolutional neural network ("CNN"), a deep belief network ("DBN"), a bidirectional recurrent deep neural network ("BRDNN"), a deep Q-network, or a combination of two or more of the above networks. However, embodiments of the disclosure are not limited to the above-described embodiments. Additionally or alternatively, the artificial intelligence model can include a software structure in addition to a hardware structure. At least two of the above-described processing units and processors can be implemented as one integrated configuration (e.g., a single chip), or each can be configured as an independent configuration (e.g., a plurality of chips). The main processor 2011 can include the above-described host 160 (refer to Figure 1 ) and the memory 170 (refer to ) of FIG. 1.

[0220] The auxiliary processor 2012 can include a controller 2012-1. The controller 2012-1 can include the interface conversion circuit and the timing controller 140 (refer to Figure 1 ) of FIG. 1. The controller 2012-1 can receive an image signal from the main processor 2011, convert a data format of the image signal to correspond to an interface specification of the display module 2040, and output image data. The controller 2012-1 can output various control signals required to drive the display module 2040.

[0221] The auxiliary processor 2012 can further include a data conversion circuit 2012-2, a gamma correction circuit 2012-3, and a rendering circuit 2012-4, etc.

[0222] The data conversion circuit 2012-2 can receive image data from the controller 2012-1, compensate the image data to display an image with desired brightness according to characteristics of the electronic device 2000 or a user's setting, etc., or convert the image data to reduce power consumption or compensate for afterimage, etc. In an embodiment, the normalization unit 1610 (refer to Figure 16 ) or 1610a (refer to Figure 19 ) and the compensation unit 1620 (refer to Figure 16 ) or 1620a (refer to Figure 19) can be included in the data conversion circuit 2012-2.

[0223] The gamma correction circuit 2012-3 can convert image data or a gamma reference voltage, etc., so that an image displayed in the electronic device 2000 has a desired gamma characteristic. The rendering circuit 2012-4 can receive image data from the controller 2012-1 and render the image data in consideration of a pixel setting applied to the display panel 2041 of the electronic device 2000, etc. At least one of the data conversion circuit 2012-2, the gamma correction circuit 2012-3, and the rendering circuit 2012-4 can be integrated into another component (e.g., the main processor 2011 or the controller 2012-1). At least one of the data conversion circuit 2012-2, the gamma correction circuit 2012-3, and the rendering circuit 2012-4 can be integrated into the data driving circuit 2043, which will be described later.

[0224] The memory 2020 can store various data used by at least one component (e.g., the processor 2010 or the sensor module 2061) of the electronic device 2000, and can store input data or output data for a command related to various data. The memory 2020 can include at least one of a volatile memory 2021 and a nonvolatile memory 2022. The memory 2020 can include the memory 1910 described above with reference to FIG. 2 (refer to Figure 19 ).

[0225] The input module 2030 can receive a command or data to be used by at least one component (e.g., the processor 2010, the sensor module 2061, or the sound output module 2063, etc.) of the electronic device 2000, from the outside (e.g., a user or an external electronic device 2000-1) of the electronic device 2000.

[0226] The input module 2030 can include a first input module 2031 configured to receive a command or data from a user and a second input module 2032 configured to receive a command or data from an external electronic device 2000-1. The first input module 2031 can include at least one of a microphone, a mouse, a keyboard, a key (e.g., a button, etc.), and a pen (e.g., a passive pen or an active pen). The second input module 2032 can support a designated protocol that can be connected to the external electronic device 2000-1 in a wired or wireless manner. According to an embodiment, the second input module 2032 can include at least one of a high definition multimedia interface ("HDMI"), a universal serial bus ("USB") interface, a secure digital ("SD") card interface, and an audio interface. The second input module 2032 can include a connector that can physically connect the electronic device 2000 to the external electronic device 2000-1, such as an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector), etc.

[0227] The display module 2040 can visually provide information to a user of the electronic device 2000. The display module 2040 can include a display panel 2041, a scan driving circuit 2042, and a data driving circuit 2043. The display module 2040 can further include a window, a chassis, and a bracket, etc. to protect the display panel 2041.

[0228] The display panel 2041 can include a liquid crystal display panel, an organic light emitting display panel, or an inorganic light emitting display panel, etc. The type of the display panel 2041 is not particularly limited. The display panel 2041 can be of a rigid type. The display panel 2041 can be of a flexible type, which can be rolled, folded, or stretchable. The display module 2040 can further include a support, a bracket, or a heat dissipation member, etc. to support the display panel 2041. The display panel 2041 can correspond to the display panel 110 described above (refer to Figure 1 ) with reference to FIG. 1.

[0229] In an embodiment, the scan driving circuit 2042 can be mounted on the display panel 2041 as a driving chip. In another embodiment, the scan driving circuit 2042 can be integrated into the display panel 2041. For example, the scan driving circuit 2042 can include an amorphous silicon thin film transistor ("TFT") gate driver circuit ("ASG") built in the display panel 2041, a low temperature poly silicon ("LTPS") TFT gate driver circuit, or an oxide semiconductor TFT gate driver circuit ("OSG"), etc. The scan driving circuit 2042 can receive a control signal from the controller 2012-1 and output a scan signal to the display panel 2041 in response to the control signal. The scan driving circuit 2042 can correspond to the scan driving circuit 130 (refer to Figure 1 ).

[0230] In an embodiment, the display module 2040 can further include an emission driving circuit. The emission driving circuit can output an emission control signal to the display panel 2041 in response to a control signal received from the controller 2012-1. The emission driving circuit can be formed separately from the scan driving circuit 2042, or can be integrated into the scan driving circuit 2042.

[0231] The data driving circuit 2043 can receive a control signal from the controller 2012-1 and convert image data into an analog voltage (e.g., a data voltage) in response to the received control signal. The data driving circuit 2043 can output the converted data voltage to the display panel 2041. The data driving circuit 2043 can receive a control signal from the controller 2012-1 and sense a sub-pixel provided in the display panel 2041 in response to the received control signal. The data driving circuit 2043 can sense the sub-pixel and output a digital value corresponding to the obtained sensing value. The data driving circuit 2043 can correspond to the data driving circuit 120 described above (refer to Figure 1 ) with reference to FIG. 1.

[0232] The data driving circuit 2043 can be integrated with another component (e.g., the controller 2012-1) of the electronic device 2000. At least a portion of the functions of the interface conversion circuit of the controller 2012-1 and the timing controller 140 (refer to Figure 1 ) can be integrated into the data driving circuit 2043.

[0233] The display module 2040 can further include a power supply circuit. The power supply circuit can output various voltages required to drive the display panel 2041. For example, the power supply circuit can correspond to the power supply circuit 150 described above (refer to Figure 1 ) with reference to FIG. 1.

[0234] The power module 2050 can supply power to components of the electronic device 2000. The power module 2050 can include a battery that charges a power voltage. The battery can include a primary cell that is not rechargeable and a secondary cell or a fuel cell that is rechargeable. The power module 2050 can include a power management integrated circuit ("PMIC"). The PMIC can supply optimized power to each of the above-described modules and modules to be described later. The power module 2050 can include a wireless power transmission / reception means electrically connected to the battery. The wireless power transmission / reception means can include a plurality of antenna radiators in the form of a coil.

[0235] The electronic device 2000 can include internal modules 2060 and external modules 2070. The internal modules 2060 can include a sensor module 2061, an antenna module 2062, and a sound output module 2063. The external modules 2070 can include a camera module 2071, a light module 2072, and a communication module 2073.

[0236] The sensor module 2061 can sense an input through a user's body or an input through a pen among the first input module 2031. The sensor module 2061 can generate an electrical signal or a data value corresponding to the input. The sensor module 2061 can include at least one of a fingerprint sensor 2061-1, an input sensor 2061-2, and a digitizer 2061-3.

[0237] The fingerprint sensor 2061-1 can generate a data value corresponding to a user's fingerprint. In an embodiment, the fingerprint sensor 2061-1 can include one of an optical type fingerprint sensor, a capacitive type fingerprint sensor, and an ultrasonic type fingerprint sensor. However, embodiments of the present disclosure are not limited thereto.

[0238] The input sensor 2061-2 can generate a data value corresponding to coordinate information of an input through a user's body or a pen. The input sensor 2061-2 can generate a change amount of capacitance due to the input as a data value. The input sensor 2061-2 can sense an input through a passive pen, or can transmit / receive data to / from an active pen.

[0239] The input sensor 2061-2 can measure a biometric signal such as blood pressure, moisture, or body fat. For example, when a user touches a sensor layer or a sensing panel with a body part and does not move for a certain time, the input sensor 2061-2 can sense a biometric signal based on a change in an electric field caused by the body part. Accordingly, information desired by the user regarding the sensed biometric signal can be output to the display module 2040.

[0240] The digitizer 2061-3 can generate a data value corresponding to coordinate information of an input through a pen. The digitizer 2061-3 can generate a change amount of electromagnetic due to the input as a data value. The digitizer 2061-3 can sense an input through a passive pen, or can transmit / receive data to / from an active pen.

[0241] In an embodiment, at least one of the fingerprint sensor 2061-1, the input sensor 2061-2, and the digitizer 2061-3 can be implemented as a sensor layer formed on the display panel 2041 through consecutive steps. At least one of the fingerprint sensor 2061-1, the input sensor 2061-2, and the digitizer 2061-3 can be disposed above the display panel 2041. One of the fingerprint sensor 2061-1, the input sensor 2061-2, and the digitizer 2061-3 (e.g., the digitizer 2061-3) can be disposed below the display panel 2041.

[0242] At least two of the fingerprint sensor 2061-1, the input sensor 2061-2, and the digitizer 2061-3 can be formed to be integrated into one sensing panel through the same process. In an embodiment, when at least two of the fingerprint sensor 2061-1, the input sensor 2061-2, and the digitizer 2061-3 are integrated into one sensing panel, the sensing panel can be disposed between the display panel 2041 and a window disposed above the display panel 2041. However, embodiments of the present disclosure are not limited thereto. The sensing panel can be disposed on the window, and the position of the sensing panel is not particularly limited.

[0243] At least one of the fingerprint sensor 2061-1, the input sensor 2061-2, and the digitizer 2061-3 can be embedded in the display panel 2041. At least one of the fingerprint sensor 2061-1, the input sensor 2061-2, and the digitizer 2061-3 can be simultaneously formed through a process of forming elements (e.g., light emitting elements, transistors, and capacitors, etc.) included in the display panel 2041.

[0244] In addition, the sensor module 2061 can generate an electrical signal or a data value corresponding to an internal or external state of the electronic device 2000. The sensor module 2061 can further include at least one of, 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, and an illuminance sensor.

[0245] The antenna module 2062 can include one or more antennas for transmitting or receiving a signal or power to or from the outside. According to an embodiment, the communication module 2073 can transmit or receive a signal to or from the external electronic device 2000-1 through an antenna suitable for a communication method. An antenna pattern of the antenna module 2062 can be integrated into one configuration (e.g., the display panel 2041) of the display module 2040 or the input sensor 2061-2, etc.

[0246] The sound output module 2063 can be configured to output sound signals to the outside of the electronic device 2000. For example, the sound output module 2063 can include a speaker (such as a multimedia playback or a recording playback) for general purposes and a receiver specifically for receiving calls. According to an embodiment, the receiver can be formed integrally with the speaker or separately therefrom. The sound output pattern of the sound output module 2063 can be integrated into the display module 2040.

[0247] The camera module 2071 can photograph still and moving images. According to an embodiment, the camera module 2071 can include one or more lenses, image sensors, or image signal processors. The camera module 2071 can further include an infrared camera capable of measuring presence or absence of a user, a position of a user, or a gaze of a user, etc.

[0248] The light module 2072 can provide light. The light module 2072 can include a light emitting diode or a xenon (Xe) lamp. The light module 2072 can operate together with the camera module 2071 or can independently operate.

[0249] The communication module 2073 can support the establishment of a wired or wireless communication channel between the electronic device 2000 and an external electronic device 2000-1 and the performance of communication through the established communication channel. In an embodiment, the communication module 2073 can include a wireless communication module and / or a wired communication module. The wireless communication module can include, for example, a cellular communication module, a short-range communication module, or a global navigation satellite system (“GNSS”) communication module, etc. The wired communication module can include, for example, a local area network (“LAN”) communication module or a power line communication module, etc. The communication module 2073 can communicate with the external electronic device 2000-1 through a short-range communication network or a long-range communication network. The short-range communication network can include, for example, a Bluetooth low energy (“BLE”) network, a Bluetooth network, a near-field communication (“NFC”) network, a wireless local area network (“WLAN”) network, a Wi-Fi direct network, or an infrared data association (“IrDA”) network, etc. The long-range communication network can include a computer network, such as a LAN or a wide area network (“WAN”). The communication module 2073 described above can be implemented as one chip, or can be implemented as separate chips.

[0250] The input module 2030, the sensor module 2061, and the camera module 2071, etc. can be used to control the operation of the display module 2040 together with the processor 2010.

[0251] ​The processor 2010 can output a command or data, based on input data received from the input module 2030, to the display module 2040, the sound output module 2063, the camera module 2071, or the light module 2072. For example, the processor 2010 can generate image data in response to input data applied through a mouse or an active pen, etc., and output the image data to the display module 2040, or generate command data in response to the input data and output the command data to the camera module 2071 or the light module 2072. When input data is not received from the input module 2030 for a certain time period, the processor 2010 can convert the operation mode of the electronic device 2000 to a low power mode or a sleep mode to reduce power consumption in the electronic device 2000.

[0252] The processor 2010 can output a command or data, based on sensing data received from the sensor module 2061, to the display module 2040, the sound output module 2063, the camera module 2071, or the light module 2072. For example, the processor 2010 can compare authentication data applied by the fingerprint sensor 2061-1 with authentication data stored in the memory 2020, and then execute an application program according to a comparison result. The processor 2010 can execute a command or output corresponding image data to the display module 2040 based on sensing data sensed by the input sensor 2061-2 or the digitizer 2061-3. When the sensor module 2061 includes a temperature sensor, the processor 2010 can receive temperature data for measuring a temperature from the sensor module 2061, and further perform brightness correction, etc. on image data based on the temperature data.

[0253] The processor 2010 can receive measurement data for a user's presence, a user's location, and a user's gaze, etc. from the camera module 2071. The processor 2010 can further perform brightness correction, etc. on image data based on the measurement data. For example, the processor 2010 determining a user's presence or absence through input from the camera module 2071 can output image data corrected for brightness through the data conversion circuit 2012-2 or the gamma correction circuit 2012-3 to the display module 2040.

[0254] Some of the components of the electronic device 2000 can be connected to each other by a communication method between peripheral devices (e.g., a bus, a general purpose input / output ("GPIO"), a serial peripheral interface ("SPI"), a mobile industry processor interface ("MIPI"), or an ultra path interconnect ("UPI") link) to exchange signals (e.g., commands or data) with each other. For example, the processor 2010 can communicate with the display module 2040 through an interface agreed upon by the two. To this end, one of the above-described communication methods can be employed, but the communication method is not limited to the above-described communication methods.

[0255] The electronic device 2000 according to an embodiment of the disclosure can be various types of devices. For example, the electronic device 2000 can include at least one of a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, and a home appliance. However, the electronic device 2000 according to an embodiment of the disclosure is not limited thereto.

[0256] According to the display device according to an embodiment of the disclosure, the electronic device including the display device, and the method of driving the display device, it is possible to improve reliability by reducing the influence of sensing and compensation due to temperature changes.

[0257] The accompanying drawings and the detailed description of the disclosure described herein cited so far are only examples of the disclosure, only for describing the disclosure, and are not intended to limit the meaning and scope of the disclosure described in the claims. Therefore, those skilled in the art will understand that various modifications and other embodiments equivalent to these can be made. Therefore, the true scope of the disclosure should be determined by the technical spirit of the appended claims.

Claims

1. A display device, wherein, The display device includes: a display panel in which a plurality of sub-pixels and a plurality of reference voltage lines connected to the plurality of sub-pixels are disposed; a data driving circuit connected to the plurality of reference voltage lines, the data driving circuit being configured to sense a first sub-pixel among the plurality of sub-pixels in a first period, and the data driving circuit being configured to sense a second sub-pixel among the plurality of sub-pixels in a second period after the first period; and a timing controller configured to correct a sensing value obtained by sensing the first sub-pixel based on a sensing value obtained by sensing the second sub-pixel.

2. The display device according to claim 1, wherein A temperature of the display panel at a point in time at which the second sub-pixel is sensed is lower than a temperature of the display panel at a point in time at which the first sub-pixel is sensed.

3. The display device according to claim 1, wherein The first sub-pixel is positioned in a first column, the second sub-pixel is positioned in a second column different from the first column, and The first sub-pixel and the second sub-pixel are included in a plurality of first color sub-pixels, and the first sub-pixel and the second sub-pixel are positioned in a same row.

4. The display device according to claim 3, wherein The first column is included in odd-numbered columns, the second column is included in even-numbered columns, and The timing controller is configured to: calculate a plurality of first average sensing values for each row based on a plurality of first sensing values of first color sub-pixels among the plurality of first color sub-pixels positioned in the odd-numbered columns; calculate a plurality of second average sensing values for each row based on a plurality of second sensing values of first color sub-pixels among the plurality of first color sub-pixels positioned in the even-numbered columns; and correct the plurality of first sensing values based on the plurality of second sensing values.

5. The display device of claim 4, wherein, The timing controller is further configured to: calculate a plurality of normalization constants for each row, wherein a normalization constant for each row corresponds to a difference between each of the plurality of first average sensing values for each row and a corresponding one of the plurality of second average sensing values for each row; calculate a plurality of corrected sensing values obtained by correcting the plurality of first sensing values based on the calculated plurality of normalization constants; and generate a compensation value based on the plurality of corrected sensing values and the plurality of second sensing values.

6. A display device, wherein, The display device includes: a display panel in which a plurality of sub-pixels and a plurality of reference voltage lines connected to the plurality of sub-pixels are disposed; a data driving circuit connected to the plurality of reference voltage lines, the data driving circuit being configured to sense a first sub-pixel among the plurality of sub-pixels in a first period, and the data driving circuit being configured to sense a second sub-pixel among the plurality of sub-pixels in a second period after the first period; and a timing controller configured to correct a sensing value obtained by sensing the first sub-pixel and a sensing value obtained by sensing the second sub-pixel based on a pre-stored average sensing value for each row.

7. The display device of claim 6, wherein, The first sub-pixel is positioned in a first column, the second sub-pixel is positioned in a second column different from the first column, and The first sub-pixel and the second sub-pixel are included in a plurality of first color sub-pixels, and the first sub-pixel and the second sub-pixel are positioned in a same row. The first sub-pixel and the second sub-pixel are included in a plurality of first color sub-pixels, and the first sub-pixel and the second sub-pixel are positioned in the same row.

8. The display device of claim 7, wherein, The first column is included in odd columns, the second column is included in even columns, and The timing controller is configured to: calculate a plurality of first average sensing values for each row based on a plurality of first sensing values of first color sub-pixels positioned in the odd columns among the plurality of first color sub-pixels; calculate a plurality of second average sensing values for each row based on a plurality of second sensing values of first color sub-pixels positioned in the even columns among the plurality of first color sub-pixels; and correct each of the plurality of first sensing values and the plurality of second sensing values based on the average sensing values for each row stored in advance.

9. A method of driving a display device, wherein, The method includes sensing and compensating a plurality of first color sub-pixels, wherein the sensing and the compensating the plurality of first color sub-pixels include: calculating a plurality of first sensing values of first color sub-pixels positioned in odd columns among the plurality of first color sub-pixels; calculating a plurality of first average sensing values for each row based on the calculated plurality of first sensing values; calculating a plurality of second sensing values of first color sub-pixels positioned in even columns among the plurality of first color sub-pixels; calculating a plurality of second average sensing values for each row based on the calculated plurality of second sensing values; calculating a plurality of normalization constants for each row, wherein the normalization constant for each row corresponds to a difference between each of the plurality of first average sensing values for each row and a corresponding one of the plurality of second average sensing values for each row; calculating a plurality of corrected sensing values obtained by correcting the plurality of first sensing values based on the calculated plurality of normalization constants; and generating a compensation value based on the calculated plurality of corrected sensing values and the calculated plurality of second sensing values.

10. An electronic device, wherein, The electronic device includes: a display module including a display panel in which a plurality of sub-pixels and a plurality of reference voltage lines connected to the plurality of sub-pixels are disposed, and a data driving circuit connected to the plurality of reference voltage lines, the data driving circuit being configured to sense a first sub-pixel among the plurality of sub-pixels in a first period, and the data driving circuit being configured to sense a second sub-pixel among the plurality of sub-pixels in a second period after the first period; a memory storing a lookup table in which a plurality of sensing values obtained by sensing the first sub-pixel and the second sub-pixel in the first period and the second period are included; and a processor configured to correct a value obtained by sensing the first sub-pixel based on a value obtained by sensing the second sub-pixel in the lookup table.

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