Patent ID: 12198586

DETAILED DESCRIPTION OF THE EMBODIMENTS

Hereinafter, various embodiments of the disclosure will be described in detail with reference to the accompanying drawings so that those skilled in the art may carry out the disclosure. The disclosure may be implemented in various different forms and is not limited to the embodiments described herein.

The same or similar elements are denoted by the same reference numerals throughout the specification. Therefore, the reference numerals described herein may be used in other drawings.

In addition, an expression “is the same” in the description may mean “is substantially the same”. That is, the expression “is the same” may be the same enough for those of ordinary skill to understand that it is the same. Other expressions may also be expressions in which “substantially” is omitted.

FIG.1is a diagram illustrating a display device according to an embodiment of the disclosure.

A display device10according to an embodiment of the disclosure may include a timing controller11(e.g., a control circuit), a data driver12(e.g., a driver circuit), a scan driver13(e.g., a driver circuit), a pixel unit14(e.g., a display panel), a sensor15(e.g., a first sensing device or circuit), and an abnormal state sensor16(e.g., a second sensing device or circuit).

The timing controller11may receive grayscale values and control signals for each image frame from an external processor. The timing controller11may compensate the grayscale values based on sensing values provided by the sensor15to generate compensated grayscale values and provide the compensated grayscale values to the data driver12. The timing controller11may provide control signals suitable for each specification to the data driver12, the scan driver13, the sensor15, and the like.

The data driver12may generate data voltages to be provided to data lines D1, D2, D3, . . . , and Dm using the grayscale values and the control signals. For example, the data driver12may sample the grayscale values using a clock signal and apply the data voltages corresponding to the grayscale values to the data lines D1to Dm in a pixel row unit (e.g., a pixel row of the display panel14). Here, m may be an integer greater than 0.

The scan driver13may receive a clock signal, a scan start signal, and the like from the timing controller11, and generate first scan signals to be provided to first scan lines S11, S12, . . . , and Sin and second scan signals to be provided to second scan lines S21, S22, . . . , and S2n. Here, n may be an integer greater than 0.

The scan driver13may sequentially supply first scan signals having a turn-on level of a pulse to the first scan lines S11, S12, . . . , and S1n. In addition, the scan driver13may sequentially supply second scan signals having a turn-on level of a pulse to the second scan lines S21, S22, . . . , and S2n.

For example, the scan driver13may include a first scan driver connected to the first scan lines S11, S12, . . . , and Sin and a second scan driver connected to the second scan lines S21, S22, . . . , and S2n. Each of the first scan driver and the second scan driver may include scan stages configured in a form of a shift register. Each of the first scan driver and the second scan driver may generate scan signals in a method of sequentially transferring a scan start signal having a form of a turn-on level of a pulse to a next scan stage according to control of a clock signal.

The display panel14includes pixels. Each pixel PXij may be connected to corresponding data line, scan line, and sensing line. Pixels connected to the same scan line and sensing line may be defined as a pixel row.

The sensor15may receive a control signal from the timing controller11and supply an initialization voltage to sensing lines I1, I2, I3, . . . , and Ip or receive a sensing signal from the sensing lines I1, I2, I3, . . . , and Ip. For example, the sensor15may supply the initialization voltage to the sensing lines I1, I2, I3, . . . , and Ip during at least a portion of a display period. For example, the sensor15may receive the sensing signal from the sensing lines I1, I2, I3, . . . , and Ip during at least a portion of a sensing period. Here, p may be an integer greater than 0. The sensor15may provide sensing values corresponding to the sensing signals to the timing controller11or the abnormal state sensor16. The sensing values may correspond to a threshold voltage of a driving transistor of each pixel, a mobility, a threshold voltage of a light emitting element, and the like. At least one of the following embodiments is described based on the assumption that the sensor15is configured to sense a mobility of the pixels. For example, the mobility of a pixel may correspond to the mobility of a transistor of the pixel.

The sensor15may include sensing channels connected to the sensing lines I1, I2, I3, . . . , and Ip. For example, the sensing lines I1, I2, I3, . . . , and Ip and the sensing channels may correspond one to one.

The abnormal state sensor16may sense whether the pixel unit14is in an abnormal state based on the mobility. For example, the abnormal state may be a state in which an internal line of the display panel14is shorted and thus an overcurrent flows. In another example, the abnormal state may be a state in which the internal line of the display panel14is open and thus the display device10may not properly operate. According to an embodiment, when the abnormal state sensor16senses the abnormal state of the display panel14, the abnormal state sensor16shuts down the display device10.

According to an embodiment, the abnormal state sensor16may be configured as an integrated circuit (IC) integrated with the timing controller11. According to an embodiment, the abnormal state sensor16may be configured as an IC integrated with the data driver12. According to an embodiment, the abnormal state sensor16may be configured as an IC integrated with the timing controller11and the data driver12. According to an embodiment, the abnormal state sensor16may be configured as an IC integrated with an external processor. At this time, the external processor may be an application processor, a central processing unit (CPU), a graphics processing unit (GPU), or the like.

FIGS.2and3are diagrams illustrating a method of driving a pixel and a sensing channel in a display period according to an embodiment of the disclosure.

First, an exemplary configuration of a pixel PXij and a sensing channel151of the sensor15is described with reference toFIG.2.

The pixel PXij may include transistors T1, T2, and T3, a storage capacitor Cst, and a light emitting element LD.

The transistors T1, T2, and T3may be configured as N-type transistors. In another embodiment, the transistors T1, T2, and T3may be configured as P-type transistors. In another embodiment, the transistors T1, T2, and T3may be configured as a combination of an N-type transistor and a P-type transistor. The P-type transistor collectively refers to a transistor in which an amount of conducting current increases when a voltage difference between a gate electrode and a source electrode increases in a negative direction. The N-type transistor collectively refers to a transistor in which an amount of conducting current increases when a voltage difference between a gate electrode and a source electrode increases in a positive direction. A transistor may be configured in various forms such as a thin film transistor (TFT), a field effect transistor (FET), and a bipolar junction transistor (BJT).

The first transistor T1may have a gate electrode connected to a first node N1, a first electrode connected to first power ELVDD, and a second electrode connected to a second node N2. The first transistor T1may be referred to as a driving transistor.

The second transistor T2may have a gate electrode connected to a first scan line S1i, a first electrode connected to a data line Dj, and a second electrode connected to the first node N1. The second transistor T2may be referred to as a scanning transistor.

The third transistor T3may have a gate electrode connected to a second scan line S2i, a first electrode connected to the second node N2, and a second electrode connected to a sensing line Ik. The third transistor T3may be referred to as a sensing transistor.

The storage capacitor Cst may have a first electrode connected to the first node N1and a second electrode connected to the second node N2.

The light emitting element LD may have an anode connected to the second node N2and a cathode connected to second power ELVSS. The light emitting element LD may be configured as an organic light emitting diode, an inorganic light emitting diode, a quantum dot/well light emitting diode, or the like. Meanwhile, the pixel PXij ofFIG.2is illustratively shown to include one light emitting element LD, but in another embodiment, the pixel PXij may include a plurality of light emitting elements connected in series, in parallel, or in series and parallel.

In general, a voltage of the first power ELVDD may be greater than a voltage of the second power ELVSS. However, in a special situation such as preventing the light emitting diode LD from emitting light, the voltage of the second power ELVSS may be set higher than the voltage of the first power ELVDD.

The sensing channel151may include switches SW1to SW7, a sensing capacitor CS1, an amplifier AMP, and a sampling capacitor CS2.

The second switch SW2may have one end connected to a third node N3and another end connected to initialization power VINT.

A first input terminal (for example, a non-inverting terminal) of the amplifier AMP may be connected to reference power VREF (e.g., a reference voltage). The amplifier AMP may be implemented by an operational amplifier.

The third switch SW3may have one end connected to the third node N3and another end connected to a second input terminal (for example, an inverting terminal) of the amplifier AMP.

The sensing capacitor CS1may have a first electrode connected to the second input terminal of the amplifier AMP and a second electrode connected to an output terminal of the amplifier AMP.

The sampling capacitor CS2may be connected to the sensing capacitor CS1through at least one or more switches SW5and SW6. One end of the sampling capacitor CS2may be connected to a node receiving a ground voltage.

The fourth switch SW4may have one end connected to the first electrode of the sensing capacitor CS1and another end connected to the second electrode of the sensing capacitor CS1.

The fifth switch SW5may have one end connected to the output terminal of the amplifier AMP and another end connected to a fourth node N4.

The sixth switch SW6may have one end connected to the fourth node N4and another end connected to a first electrode of the sampling capacitor CS2.

The seventh switch SW7may have one end connected to the first electrode of the sampling capacitor CS2and another end connected to an analog-to-digital converter ADC.

The first switch SW1may have one end connected to the third node N3and another end connected to the fourth node N4.

The sensor15(e.g., a first sensor) may include the sensing channel151and the analog-to-digital converter ADC. For example, the sensor15may include analog-to-digital converters corresponding to the number of sensing channels. In another example, the sensor15may include a single analog-to-digital converter and convert sampling signals, which are stored in the sensing channels, in a time-division method.

Referring toFIG.3, an exemplary waveform of signals applied to the scan lines S1iand S2i, the data line Dj, and the sensing line Ik connected to the pixel PXij during the display period is shown. Here, k may be an integer greater than 0.

During the display period, the sensing line Ik is connected to the initialization power VINT. During the display period, the second switch SW2may be turned on.

During the display period, the first switch SW1and the third switch SW3may be turned off. Therefore, the sensing line Ik may be prevented from being connected to another power VREF.

During the display period, data voltages DS(i−1)j, DSij, and DS(i+1)j may be sequentially applied to the data line Dj in a horizontal period unit. A turn-on level (high level) of scan signal may be applied to the first scan line S1iin a corresponding horizontal period. In addition, the turn-on level of scan signal may be applied to the second scan line S2iin synchronization with the first scan line S1i. In another embodiment, during the display period, the turn-on level of a scan signal is always applied to the second scan line S2i.

For example, when the turn-on level of a scan signal is applied to the first scan line S1iand the second scan line S2i, the second transistor T2and the third transistor T3are turned on. Therefore, a voltage corresponding to a difference between the data voltage DSij and the initialization power VINT is written or stored to the storage capacitor Cst of the pixel PXij.

In the pixel PXij, a driving current amount flowing through a driving path connecting the first power ELVDD, the first transistor T1, and the second power ELVSS is determined, according to a voltage difference between a gate electrode and a source electrode of the first transistor T1. A light emission luminance of the light emitting element LD may be determined according to the driving current amount.

Thereafter, when a turn-off level (low level) of a scan signal is applied to the first scan line S1iand the second scan line S2i, the second transistor T2and the third transistor T3may be turned off. Therefore, regardless of a voltage change of the data line Dj, the voltage difference between the gate electrode and the source electrode of the first transistor T1may be maintained by the storage capacitor Cst and the light emission luminance of the light emitting element LD may be maintained.

FIGS.4and5are diagrams illustrating a method of driving a pixel and a sensing channel in a mobility sensing period according to an embodiment of the disclosure.

Referring toFIG.5, an exemplary waveform of signals applied to the scan lines S1iand S2i, the data line Dj, and the sensing line Ik connected to the pixel PXij during the mobility sensing period is shown. InFIG.4, a state of the pixel Pxij and the sensing channel151is shown based on a time point tm ofFIG.5.

A sensing voltage Ssij may be applied to the data line Dj. The sensing line Ik may be connected to the reference power VREF. Referring toFIG.4, the third switch SW3may be in a turn-on state. Since the non-inverting terminal and the inverting terminal of the amplifier AMP are in a virtual short state, it may be recognized that the sensing line Ik is connected to the reference power VREF.

When the scan signals of the turn-on level are applied to the first scan line S1iand the second scan line S2iin synchronization with the sensing voltage SSij, the second transistor T2and the third transistor T3may be turned on.

Therefore, the sensing voltage SSij may be applied to the first node N1of the pixel PXij, and a voltage of the reference power VREF may be applied to the second node N2. A voltage difference between the sensing voltage SSij and the reference power VREF may be greater than a threshold voltage of the first transistor T1. Therefore, the first transistor T1is turned on, and a sensing current flows through a sensing current path connecting the first power ELVDD, the first transistor T1, the second node N2, the third transistor T3, the third node N3, the third switch SW3, and the first electrode of the sensing capacitor CS1. The sensing current may include characteristic information of the first transistor T1according to Equation 1.
Id=½(u×Co)(W/L)(Vgs−Vth)2[Equation 1]

In Equation 1, Id may be the sensing current flowing through the first transistor T1, u may be mobility, Co may be a capacitance formed by a channel, an insulating layer, and a gate electrode of the first transistor T1, W may be a width of the channel of the first transistor T1, L may be a length of the channel of the first transistor T1, Vgs may be a voltage difference between the gate electrode and the source electrode of the first transistor T1, and Vth may be a threshold voltage value of the first transistor T1.

Here, Co, W, and L are fixed constants. Vth may be sensed by another detection method. Vgs is a difference of the voltage between the sensing voltage SSij and the voltage of the reference power VREF. Since a voltage of the third node N3is fixed, a voltage of the fourth node N4is decreased as the sensing current Id increases. The voltage of the fourth node N4may be stored in the sampling capacitor CS2as the sampling signal. Thereafter, the analog-to-digital converter ADC may convert the sampling signal stored in the sampling capacitor CS2into a digital signal (that is, a sensing value) through the turned-on seventh switch SW7. The timing controller11or the abnormal state sensor16(e.g., a second sensor) may calculate a magnitude of the sensing current Id based on the sensing value. Therefore, the mobility u, which is a remaining variable, may be obtained.

FIGS.6and7are diagrams illustrating a method of driving a pixel and a sensing channel in a display period according to another embodiment of the disclosure.

Referring toFIG.6, since a structure of the pixel PXij is the same as that described with reference toFIGS.2to4, a repetitive description is omitted.

The sensing channel151ofFIG.6may include a first switch SW11, a second switch SW12, and a sensing capacitor Css.

A first electrode of the first switch SW11may be connected to the third node N3. For example, the third node N3may correspond to the sensing line Ik. A second electrode of the first switch SW11may receive the initialization voltage Vint. For example, the second electrode of the first switch SW11may be connected to the initialization voltage Vint.

A first electrode of the second switch SW12may be connected to the third node N3, and a second electrode of the second switch SW12may be connected to the fourth node N4.

A first electrode of the sensing capacitor Css may be connected to the fourth node N4, and a second electrode of the sensing capacitor Css may be connected to reference power (for example, ground).

The sensor15illustrated inFIG.6may include an analog-to-digital converter. For example, the sensor15may include analog-to-digital converters corresponding to the number of sensing channels. The analog-to-digital converter may convert a sensing voltage stored in the sensing capacitor Css into a digital value (that is, a sensing value). The converted digital value may be provided to the timing controller11or the abnormal state sensor16. In another example, the sensor15may include analog-to-digital converters of the number less than that of the sensing channels, and may convert sensing signals stored in the sensing channels in a time-division method.

Referring toFIG.7, during the display period, the sensing line Ik, that is, the third node N3may receive the initialization voltage Vint. During the display period, the first switch SW11may be turned on, and the second switch SW2may be turned off.

During the display period, data voltages DS(i−1)j, DSij, and DS(i+1)j may be sequentially applied to the data line Dj in a horizontal period unit. A turn-on level (for example, a logic high level) of first scan signal may be applied to the first scan line S1iin a corresponding horizontal period. In addition, a turn-on level of second scan signal may also be applied to the second scan line S2iin synchronization with the first scan line S1i. In another embodiment, during the display period, the turn-on level of second scan signal may always be applied to the second scan line S2i.

For example, when the turn-on level of scan signals are applied to the first scan line S1iand the second scan line S2i, the second transistor T2and the third transistor T3may be turned on. Therefore, a voltage corresponding to a difference between the data voltage DSij and the initialization voltage Vint is written or stored to the storage capacitor Cst of the pixel PXij.

In the pixel PXij, according to a voltage difference between the gate electrode and the source electrode of the first transistor T1, the driving current amount flowing through the driving path connecting the first power line ELVDD, the first transistor T1, the light emitting diode LD, and the second power line ELVSS is determined. A light emission luminance of the light emitting element LD may be determined according to the driving current amount.

Thereafter, when a turn-off level (for example, a logic low level) of scan signal is applied to the first scan line S1iand the second scan line S2i, the second transistor T2and the third transistor T3may be turned off. Therefore, regardless of a voltage change of the data line Dj, the voltage difference between the gate electrode and the source electrode of the first transistor T1may be maintained by the storage capacitor Cst, and the light emission luminance of the light emitting element LD may be maintained.

FIG.8is a diagram illustrating a method of driving a pixel and a sensing channel in a mobility sensing period according to an embodiment of the disclosure.

At a time point t1b, the turn-on level of first scan signal may be applied to the first scan line S1iand the turn-on level of second scan signal may be applied to the second scan line S2i. At this time, since a reference voltage Vref2is applied to the data line Dj, the reference voltage Vref2may be applied to the first node N1. In addition, since the first switch SW11is in a turn-on state, the initialization voltage Vint may be applied to the second node N2and the third node N3. Accordingly, the first transistor T1may be turned on according to the difference between a gate voltage and a source voltage.

At a time point t2b, as the turn-off level of first scan signal is applied to the first scan line S1i, the first node N1may be in a floating state. In addition, the initialization voltage Vint may be applied to the fourth node N4as the second switch SW12is turned on.

At a time point t3b, the first switch SW11may be turned off. Accordingly, as a current is supplied from the first power line ELVDD through the first transistor T1, a voltage of the second, third, and fourth nodes N2, N3, and N4increases. At this time, since the first node N1is in the floating state, a gate-source voltage difference of the first transistor T1may be maintained.

At a time point t4b, the second switch SW12may be turned off. Accordingly, the sensing voltage is stored in the first electrode of the sensing capacitor Css. A sensing current of the first transistor T1may be obtained as in Equation 2 below.
I=C*(Vp2−Vp1)/(tp2−tp1)  [Equation 2]

In Equation 2, I is the sensing current of the first transistor T1, C is a capacitance of the sensing capacitor Css, Vp2 is the sensing voltage at the time point tp1, and Vp1 is the sensing voltage at the time point tp2.

Assuming that a voltage slope of the fourth node N4between the time point t3band the time point t4bis linear, since the sensing voltage at the time point t3band the sensing voltage at the time point t4bmay be known, the sensing current of the first transistor T1may be calculated. In addition, a mobility of the first transistor T1may be calculated using the calculated sensing current. For example, as the sensing current increases, the mobility may increase. For example, a magnitude of the mobility may be proportional to a magnitude of the sensing current.

FIG.9is a diagram illustrating a connection relationship between a sensing channel and pixels according to an embodiment of the disclosure.

Referring toFIG.9, a dot DOTik according to an embodiment of the disclosure may include a plurality of pixels PXi(j−1), PXij, and PXi(j+1). The plurality of pixels PXi(j−1), PXij, and PXi(j+1) included in the same dot DOTik may be connected to the sensing channel151through the same sensing line Ik.

For example, the plurality of pixels PXi(j−1), PXij, and PXi(j+1) may be pixels of different colors. For example, the pixel PXi(j−1) may be a pixel of a first color, the pixel PXij may be a pixel of a second color, and the pixel PXi(j+1) may be a pixel of a third color. That is, the pixel PXi(j−1) may include a light emitting element LD capable of emitting light in the first color, the pixel PXij may include a light emitting element LD capable of emitting light in the second color, the pixel PXi(j+1) may include a light emitting element LD capable of emitting light in the third color.

The first color, the second color, and the third color may be different colors. For example, the first color may be one color among red, green, and blue, the second color may be one color other than the first color among red, green, and blue, and the third color may be a remaining color other than the first color and the second color among red, green, and blue. In addition, magenta, cyan, and yellow may be used instead of red, green, and blue as the first to third colors.

According to an embodiment, when sensing characteristic information of the pixels of the pixel unit14, the sensor15may sense pixels of the same color. For example, the sensor15may sense characteristic information on pixels of the first color of the pixel unit14during a first color sensing period. Similarly, the sensor15may sense characteristic information on pixels of the second color during a second color sensing period different from the first color sensing period. In addition, the sensor15may sense characteristic information on pixels of the third color during a third color sensing period different from the first color sensing period and the second color sensing period.

For example, while the pixel PXi(j−1) of the first color is sensed, a turn-off level (corresponding to a black grayscale) of data voltages may be applied to data lines Dj and D(j+1) of the pixels PXij and PXi(j+1) of different colors (i.e., colors different from the first color). Therefore, while the pixel PXi(j−1) of the first color is sensed, the first transistors T1of the pixels PXij and PXi(j+1) may be turned off, and thus the characteristic information of the pixel PXi(j−1) may not be affected.

InFIG.9, three pixels are connected to the same scan lines S1iand S2iunder an assumption that each dot has an RGB stripe structure. In another embodiment, when each dot is configured in a PENTILE™ structure, each dot may include only two pixels. In still another embodiment, each dot may include pixels of different colors connected to different scan lines and sharing the same sensing line.

FIG.10is a diagram illustrating a method of sensing an abnormal state according to an embodiment of the disclosure.

In an embodiment ofFIG.10, in a power-on step (S101) of the display device10, the sensor15does not perform a mobility sensing process. In the power-on step (S101), the pixel unit14does not display an image.

The sensor15may generate a first sensing value for all or some pixels of the pixel unit14in a first mobility sensing process (S102) after the power-on step (S101). For example, the first mobility sensing process may sense a mobility of one or more pixels of the pixel unit14during a first period after an image is displayed, after the power-on. The first mobility sensing process (S102) may include a plurality of frame periods. For example, the first mobility sensing process may be performed during the frame periods. During the first mobility sensing process (S102), the pixel unit14may display an image corresponding to the plurality of frame periods.

The sensor15may generate a second sensing value for all or some pixels of the pixel unit14in a second mobility sensing process (S103) that is performed after the first mobility sensing process (S102). For example, the first mobility sensing process may sense a mobility of one or more pixels of the pixel unit14during a second period after the first period while an image is still being displayed. The second mobility sensing process (S103) may include a plurality of frame periods. During the second mobility sensing process (S103), the pixel unit14may display an image corresponding to the plurality of frame periods.

The abnormal state sensor16may calculate a difference (e.g., a difference value) between the first sensing value and the second sensing value for the same pixel while performing the second mobility sensing process (S103) (S104). When the difference between the first sensing value and the second sensing value for the same pixel exceeds a predetermined threshold value, the abnormal state sensor16may sense that the pixel unit14is in the abnormal state. However, a more detailed method of sensing an abnormal state is described later with reference toFIGS.14to16. When the abnormal state is sensed, the abnormal state sensor16may shut down the display device10or reduce brightness of the display device10.

Meanwhile, when the pixel unit14is sensed as having the normal state, the sensor15may generate a third sensing value from all or some pixels of the pixel unit14in a third mobility sensing process (S105) after performing the second mobility sensing process (S103). The third mobility sensing process (S105) may include a plurality of frame periods. During the third mobility sensing process (S105), the pixel unit14may display an image corresponding to the plurality of frame periods.

The abnormal state sensor16may calculate a difference between the second sensing value and a third sensing value for the same pixel while performing the third mobility sensing process (S105) (S106). When the difference between the second sensing value and the third sensing value for the same pixel exceeds a predetermined threshold value, the abnormal state sensor16may sense that the pixel unit14is in the abnormal state. However, a more detailed method of sensing an abnormal state is described later with reference toFIGS.14to16. When the abnormal state is sensed, the abnormal state sensor16may shut down the display device10or reduce a brightness of the display device10.

FIG.11is a diagram illustrating a method of sensing an abnormal state according to an embodiment of the disclosure.

In the embodiment ofFIG.11, when the display device10is powered on, the sensor15performs an initial mobility sensing process (S201). Therefore, the sensor15may generate an initial sensing value for all or some pixels of the pixel unit14. In the initial mobility sensing process (S201), the pixel unit14does not display an image. For example, the first mobility sensing process may sense a mobility of one or more pixels of the pixel unit14during a first period after the power-on, but before an image is displayed.

The sensor15may generate a first sensing value for all or some pixels of the pixel unit14in a first mobility sensing process (S202) after the initial mobility sensing process (S201). The first mobility sensing process (S202) may include a plurality of frame periods. During the first mobility sensing process (S202), the pixel unit14may display an image corresponding to the plurality of frame periods. For example, the first mobility sensing process may sense a mobility of one or more pixels of the pixel unit14during a second period after the first period while an image is displayed.

The abnormal state sensor16may calculate a difference between the initial sensing value and the first sensing value for the same pixel while performing the first mobility sensing process (S202) (S203). When the difference between the initial sensing value and the first sensing value for the same pixel exceeds a predetermined threshold value, the abnormal state sensor16may sense that the pixel unit14is in the abnormal state. However, a more detailed method of sensing an abnormal state is described later with reference toFIGS.14to16. When the abnormal state is sensed, the abnormal state sensor16may shut down the display device10or reduce a brightness of the display device10.

In the embodiment ofFIG.11, while performing the first mobility sensing process (S202), the abnormal state sensor16may first sense whether the pixel unit14is in the abnormal state. In the above-described embodiment ofFIG.10, while performing the second mobility sensing process (S103), the abnormal state sensor16may first sense whether the pixel unit14is in the abnormal state. That is, compared to the embodiment ofFIG.10, the embodiment ofFIG.11may sense whether or not the pixel unit14is in the abnormal state more quickly.

According to the present embodiment, the sensor15may generate the initial sensing value in the initial mobility sensing process (S201) from a power-on time point of the display device10to a display start time point, and may generate the first sensing value in the first mobility sensing process (S202) after the display start time point. For example, the initial mobility sensing process may sense a mobility during a first period from the power-on time point to a point just before the display device10begins displaying an image and determine the initial sensing value from sensed mobility. At this time, the abnormal state sensor16may sense whether the pixel unit14is in the abnormal state based on the initial sensing value and the first sensing value.

Since other subsequent processes (S204, S205, S206, and S207) are repetitions of the above-described processes, a repetitive description is omitted.

FIG.12is a diagram illustrating an initial mobility sensing process according to an embodiment of the disclosure.

The scan driver13may sequentially supply the scan signals to the scan lines in the initial mobility sensing process (S201). For example, the scan driver13may sequentially supply the turn-on level of first scan signals to the first scan lines S11, S12, S13, . . . , and S1n. In addition, the scan driver13may sequentially supply the turn-on level of second scan signals to the second scan lines S21, S22, S23, . . . , and S2n. In the present embodiment, the mobility sensing method ofFIGS.4and5is described as an example, but another mobility sensing method such as that ofFIG.8may be used.

In an embodiment, the data driver12successively supplies sensing voltages SSR, SSG, and SSB for mobility sensing to the data lines D1to Dm in the initial mobility sensing process (S201), and does not supply data voltages for image display to the data lines D1to Dm in the initial mobility sensing process.

According to an embodiment, the initial mobility sensing process (S201) may be performed in a time-division method on pixels having the same color of the pixel unit14. For example, the initial mobility sensing process (S201) may sequentially include a first color sensing period S201R, a second color sensing period S201G, and a third color sensing period S201B.

In each of the first color sensing period S201R, the second color sensing period S201G, and the third color sensing period S201B, the scan driver13may identically operate. According to an embodiment, the data driver12may supply different sensing voltages SSR, SSG, and SSB during corresponding sensing periods S201R, S201G, and S201B according to a characteristic of the light emitting elements LD of different colors.

FIG.13is a diagram illustrating a first mobility sensing process according to an embodiment of the disclosure. Since a subsequent second mobility sensing process (S204), third mobility sensing process (S206), and the like may be performed identically to the first mobility sensing process (S202), a repetitive description is omitted.

The sensor15may perform the first mobility sensing process (S202) during blank periods S2011B, S2012B, . . . positioned between active periods S2011A, S2012A, . . . . Each frame period may include one active period. That is, the first mobility sensing process (S202) may be performed during a plurality of frame periods.

The active period may be a supply period during which grayscale values representing an image frame to be displayed by the pixel unit14are supplied. The blank period may be a period between adjacent active periods, and clock training, frame setting, dummy data supply, mobility sensing, and the like may be performed in the blank period. In an embodiment, the grayscale values are not supplied or data voltages representing the grayscale values are not supplied during the blank period. The blank period may be shorter than the active period, and the sensor15may be configured to perform mobility sensing on only some pixel rows instead of all pixels of the pixel unit14.

In the first mobility sensing process (S202), the scan driver13may supply the scan signals to different scan lines during different blank periods S2011B and S2012B. For example, in the first blank period S2011B, mobility sensing may be performed on pixels of a first color of a first pixel row connected to the scan lines S11and S21. In addition, in the second blank period S2011B, mobility sensing may be performed on pixels of the first color of a second pixel row connected to the scan lines S12and S22. Similarly, in an n-th blank period, mobility sensing may be performed on pixels of the first color of an n-th pixel row connected to the scan lines Sin and S2n. In a subsequent (n+1)-th blank period, mobility sensing may be performed on the pixels of the second color of the first pixel row connected to the scan lines S11and S21.

As described above, in the first mobility sensing process (S202), when sensing for the pixels of the first color has ended, sensing for the pixels of the second color may be performed, and when the sensing for the pixels of the second color has ended, sensing for the pixels of the third color may be performed. Therefore, sensing for all pixels of the pixel unit14is possible over a plurality of frame periods. Therefore, a time required for the first mobility sensing process (S202) may be longer than a time required for the initial mobility sensing process (S201). For example, a processing time of the first mobility sensing process may be longer than a processing time of the initial mobility sensing process.

The data driver12may first supply sensing voltages SSR1and SSR2to the data lines D1to Dm and then supply data voltages DS1and DS2to the data lines D1to Dm during each of the blank periods S2011B and S2012B in the first mobility sensing process S202. In an embodiment, the data voltages DS1and DS2supplied during the blank periods S2011B and S2012B may be the same as some (data voltages of a corresponding pixel row) of data voltages DSRGB supplied during immediately previous active periods S2011A and S2012A.

For example, during the active period S2011A, the scan driver13may sequentially supply the turn-on level of scan signals to the scan lines S11to S2n. The data driver12may supply the data voltages DSRGB for image display to the data lines D1to Dm in synchronization with the scan signals. Accordingly, the data voltages DSRGB may be written to the pixel unit14, and an image corresponding to the written data voltages DSRGB may be displayed by the pixel unit14.

Next, during the blank period S2011B, the scan driver13may supply the turn-on level of scan signals to the scan lines S11and S21. At this time, the data driver12may supply the sensing voltages SSR1to the data lines D1to Dm, and thus the sensor15may perform mobility sensing on the pixels of the first color of the pixel row connected to the scan lines S11and S21. Meanwhile, after sensing has ended, the scan driver13may supply the turn-on level of scan signals to the scan lines S11and S21again. At this time, the data driver12may supply the data voltages DS1to the data lines D1to Dm, and thus the pixels of the first color of the pixel row may display the same image as that in the active period S2011A.

FIG.14is a diagram illustrating an abnormal state sensor according to an embodiment of the disclosure.

The abnormal state sensor16according to an embodiment of the disclosure may include a mode selector161(e.g., a selection circuit), a difference calculator162(e.g., a subtractor), an abnormal pixel candidate detector163(e.g., a first logic circuit), an abnormal pixel determiner164(e.g., a second logic circuit), and an abnormal state determiner165(e.g., a third logic circuit).

The mode selector161may select a first mode mode1 or a second mode mode2 according to the number of times cn that the mobility sensing process is performed. For example, in counting the number of times cn the mobility sensing process is performed, the initial mobility sensing process (S201) may not be counted. For example, the number of times cn may be the number obtained by counting the mobility sensing processes (S202, S204, S206, . . . ) during the image display period.

The mode selector161may select the first mode mode1 when only the initial mobility sensing process (S201) and the first mobility sensing process (S202) are performed, and select the second mode mode2 when the mobility sensing processes (S204, S206, . . . ) is performed after the first mobility sensing process (S202). For example, when the number of the times cn is 1, since only the initial mobility sensing process (S201) and the first mobility sensing process (S202) are performed, the mode selector161may select the first mode mode1. When the number of times cn is an integer greater than 1, since the mobility sensing processes (S204, S206, . . . ) after the first mobility sensing process (S202) are performed, the mode selector161may select the second mode mode2.

The difference calculator162may calculate a difference value DIFF between the initial sensing value and the first sensing value during the first mode mode1, and calculate a difference value DIFF of sensing values generated in two recent mobility sensing processes during the second mode mode2.

For example, the difference calculator162may calculate a difference value DIFF between a current sensing value SSC2and an immediately previous sensing value SSC1. In a case of the first mode mode1, the current sensing value SSC2is the first sensing value generated in the first mobility sensing process (S202), and the immediately previous sensing value SSC1is the initial sensing value generated in the initial mobility sensing process (S201). For example, in a case of the second mode mode2, the current sensing value SSC2may be the second sensing value generated in the second mobility sensing process (S204), and the immediately previous sensing value SSC1may be the first sensing value generated in the first mobility sensing process (S202). At a next time point, in the case of the second mode mode2, the current sensing value SSC2may be the third sensing value generated in the third mobility sensing process (S206), and the immediately previous sensing value SSC1may be the second sensing value generated in the second mobility sensing process (S204). In an embodiment, the difference value DIFF is calculated in units of a pixel. For example, the difference value DIFF for a pixel may be calculated from a previous sensing value SSC1of the pixel and the current sensing value SSC2of the same pixel.

When the difference value DIFF is greater than a first threshold value DTH, the abnormal pixel candidate detector163may designate corresponding pixels as abnormal pixel candidates BPC. Even though the difference value DIFF is greater than the first threshold value DTH, since it may simply be a result of an image with a large grayscale change, the abnormal pixel candidates BPC are not immediately determined as abnormal pixels. According to an embodiment, the first threshold value DTH in the first mode mode1 and the first threshold value DTH in the second mode mode2 may be set differently.

The abnormal pixel determiner164may determine the abnormal pixel candidates BPC as abnormal pixels BP when sensing values corresponding to the abnormal pixel candidates BPC are greater than a second threshold value STH. A case where the sensing value is greater than the second threshold value STH may mean that an overcurrent flows in a corresponding pixel. According to an embodiment, the second threshold value STH in the first mode mode1 and the second threshold value STH in the second mode mode2 may be set differently.

The abnormal state determiner164may determine that the pixel unit14is in the abnormal state when the number of abnormal pixels BP is greater than a first count threshold value CTH1, and determine that the pixel unit14is in the normal state when the number of abnormal pixels BP is less than the first count threshold CTH1. That is, even though some pixels are shorted and thus an overcurrent flows locally, the pixel unit14may operate normally. However, when the number of shorted abnormal pixels BP is greater than the first count threshold value CTH1, a risk of fire or damage to the display device10exists due to the overcurrent, and thus the display device10may be be shut down. According to an embodiment, the first count threshold value CTH1in the first mode mode1 and the first count threshold value CTH1in the second mode mode2 may be set differently.

FIGS.15and16are diagrams illustrating an abnormal state sensor according to an embodiment of the disclosure.

Referring toFIG.15, the pixel unit14may include the scan lines S11to S2narranged to be spaced apart from each other in a first direction DR1and extending in a second direction DR2. The first direction DR1and the second direction DR2may be perpendicular to each other. In addition, the display device10may include a plurality of ICs121,122,123, . . . disposed in the first direction DR1of the pixel unit14. Each of the plurality of ICs121,122,123, . . . may integrally implement a function of the data driver12and the sensor15ofFIG.1. Data lines and sensing lines extending from each of the plurality of ICs121,122,123, . . . may extend in a direction opposite to the first direction DR1in the pixel unit14. The pixel unit14may include pixels PX1rto PXnr connected to data lines Dq to Dr, the sensing lines, and the scan lines S11to S2n.

A first pixel group PXG1may include pixels PX1r, PX2r, . . . , and PX(n−1)r, PXnr connected to the same data line Dr and connected to different scan lines S11to S2n. The first pixel group PXG1may not include other pixels which are not connected to a specific data line Dr.

A second pixel group PXG2may include pixels PX(n−1)q, PX(n−1)(q+1), PX(n−1)(q+2), PXnq, PXn(q+1), and PXn(q+2) included in a partial area adjacent in the first direction DR1of the pixel unit14. For example, the second pixel group PXG2may include the pixels PXnq, PXn(q+1), and PXn(q+2) positioned at the outermost portion of the pixel unit14in the first direction DR1.

Referring toFIG.16, an abnormal state determiner165′ may include a first counter CNT1(e.g., a first counter circuit), a second counter CNT2(e.g., a second counter circuit), and a third counter CNT3(e.g., a third counter circuit). Since other functional units included in the abnormal state sensor16ofFIG.16are the same as those ofFIG.14, a repetitive description is omitted.

The first counter CNT1may generate a first abnormal condition value when the number of abnormal pixels BP is greater than the first count threshold value CTH1.

The second counter CNT2may generate a second abnormal condition value when the number of abnormal pixels BP belonging to the first pixel group PXG1connected to the different scan lines S11to S2nand one data line Dr is greater than a second count threshold value CTH2.

The third counter CNT3may generate a third abnormal condition value when the number of abnormal pixels BP positioned in a partial area of the pixel unit14and belonging to the second pixel group PXG2connected to the plurality of scan lines S1(n−1) to S2nand the plurality of data lines Dq to D(q+2) is greater than a third count threshold value CTH3.

The abnormal state determiner165′ may determine that the pixel unit14is in the abnormal state when at least one of the first abnormal condition value, the second abnormal condition value, and the third abnormal condition value is generated. For example, the abnormal state determiner165′ may determine that the pixel unit14is in the normal state when all of the first abnormal condition value, the second abnormal condition value, and the third abnormal condition value are not generated.

Meanwhile, according to an embodiment, the abnormal state determiner165′ may include at least one of the first counter CNT1, the second counter CNT2, and the third counter CNT3. For example, each of the second count threshold value CTH2and the third count threshold value CTH3may be less than the first count threshold value CTH1. This is because the second counter CNT2and the third counter CNT3count the abnormal pixels BP for some pixels instead of all pixels.

Since current paths of the pixel unit14may cause a bottleneck phenomenon as the current paths are closer to the ICs121,122,123, . . . , a probability that the abnormal pixels BP are generated in pixels positioned in an area of the first direction DR1among the pixels of the pixel unit14is high. The third counter CNT3may generate an abnormal state condition value faster than the first counter CNT1by counting the abnormal pixels BP only for the pixels belonging to the second pixel group PXG2. Therefore, when the abnormal state determiner165′ is configured to include the third counter CNT3, the abnormal state determiner165′ may determine whether or not the pixel unit14is in the abnormal state more quickly than the abnormal state determiner165ofFIG.14.

Meanwhile, as described above, the probability that the abnormal pixels are generated may gradually increase along the first direction DR1of the pixel unit14. Therefore, even though the abnormal pixels BP are counted only for the first pixel group PXG1including pixels connected to one data line Dr extending in the first direction DR1, a ratio of the counted abnormal pixels BP may be substantially the same as a ratio of the abnormal pixels BP to all pixels. The second counter CNT2may generate the abnormal state condition value faster than the first counter CNT1by counting the abnormal pixels BP only for the pixels belonging to the first pixel group PXG1. Therefore, when the abnormal state determiner165′ is configured to include the second counter CNT2, the abnormal state determiner165′ may determine whether or not the pixel unit14is in the abnormal state faster than the abnormal state determiner165ofFIG.14.

FIG.17is a block diagram of an electronic device101according to an embodiment of the disclosure.

The electronic device101outputs various pieces of information through a display module140in an operating system. When a processor110executes an application stored in a memory180, the display module140provides application information to a user through a display panel141. The display panel141may be implemented by the pixel unit14. The display module140may further include the sensor15and the abnormal state sensor16. A scan driver142of the display module140may be implemented by the scan driver13. A data driver143of the display module140may be implemented by the data driver12. The display module140may further include the timing controller11.

The processor110obtains an external input through an input module130or a sensor module191and executes an application corresponding to the external input. For example, when the user selects a camera icon displayed on the display panel141, the processor110obtains a user input through an input sensor191-2and activates a camera module171. The processor110transmits image data corresponding to a captured image obtained through the camera module171to the display module140. The display module140may display an image corresponding to the captured image through the display panel141.

As another example, when personal information authentication is executed in the display module140, a fingerprint sensor191-1obtains input fingerprint information as input data. The processor110compares input data obtained through the fingerprint sensor191-1with authentication data stored in the memory180and executes an application according to a comparison result. The display module140may display information executed according to a logic of the application through the display panel141.

In still another example, when a music streaming icon displayed on the display module140is selected, the processor110obtains a user input through the input sensor191-2and activates a music streaming application stored in the memory180. When a music execution command is input in the music streaming application, the processor110activates a sound output module193to provide sound information corresponding to the music execution command to the user.

In the above, an operation of the electronic device101is briefly described. Hereinafter, a configuration of the electronic device101is described in detail. Some of configurations of the electronic device101to be described later may be integrated and provided as one configuration, and one configuration may be separated into two or more configurations and provided.

Referring toFIG.17, the electronic device101may communicate with an external electronic device102through a network (for example, a short-range wireless communication network or a long-range wireless communication network). According to an embodiment, the electronic device101may include the processor110, the memory180, the input module130, the display module140, a power module150, an internal module190, and an external module170. According to an embodiment, in the electronic device101, at least one of the above-described components may be omitted or one or more other components may be added. According to an embodiment, some of the above-described components (for example, the sensor module191, an antenna module192, or the sound output module193) may be integrated into another component (for example, the display module140).

The processor110may execute software to control at least another component (for example, a hardware or software component) of the electronic device101connected to the processor110, and perform various data processing or operations. According to an embodiment, as at least a portion of the data processing or operation, the processor110may store a command or data received from another component (for example, the input module130, the sensor module191, or a communication module173) in a volatile memory181and process the command or the data stored in the volatile memory181, and result data may be stored in a nonvolatile memory182.

The processor110may include a main processor111and an auxiliary processor112. The main processor111may include one or more of a central processing unit (CPU)111-1or an application processor (AP). The main processor111may further include any one or more of a graphic processing unit (GPU)111-2, a communication processor (CP), and an image signal processor (ISP). The main processor111may further include a neural processing unit (NPU)111-3. The NPU is a processor specialized in processing an artificial intelligence model, and the artificial intelligence model may be generated through machine learning. The artificial intelligence model may include a plurality of artificial neural network layers. The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the above-described example. Additionally or alternatively, the artificial intelligence model may include a software structure in addition to a hardware structure. At least two of the above-described processing units and processors may be implemented as one integrated configuration (for example, a single chip), or each may be implemented as an independent configuration (for example, a plurality of chips).

The auxiliary processor112may include a controller112-1. The controller112-1may include an interface conversion circuit and a timing control circuit. The controller112-1receives an image signal from the main processor111, converts a data format of the image signal to correspond to an interface specification with the display module140, and outputs image data. The controller112-1may output various control signals necessary for driving the display module140.

The auxiliary processor112may further include a data conversion circuit112-2, a gamma correction circuit112-3, a rendering circuit112-4, and the like. The data conversion circuit112-2may receive the image data from the controller112-1, compensate the image data to display an image with a desired luminance according to a characteristic of the electronic device101, a setting of the user, or the like, or convert the image data for reduction of power consumption, afterimage compensation, or the like. The gamma correction circuit112-3may convert the image data, a gamma reference voltage, or the like so that the image displayed on the electronic device101has a desired gamma characteristic. The rendering circuit112-4may receive the image data from the controller112-1and render the image data in consideration of a pixel disposition or the like of the display panel141applied to the electronic device101. At least one of the data conversion circuit112-2, the gamma correction circuit112-3, and the rendering circuit112-4may be integrated into another component (for example, the main processor111or the controller112-1). At least one of the data conversion circuit112-2, the gamma correction circuit112-3, and the rendering circuit112-4may be integrated into a data driver143to be described later.

The memory180may store various data used by at least one component (for example, the processor110or the sensor module191) of the electronic device101, and input data or output data for a command related thereto. The memory180may include at least one of the volatile memory181and the nonvolatile memory182.

The input module130may receive a command or data to be used by a component (for example, the processor110, the sensor module191, or the sound output module193) of the electronic device101from a source located outside (for example, the user or the external electronic device102) of the electronic device101.

The input module130may include a first input module131to which a command or data is input from the user and a second input module132to which a command or data is input from the external electronic device102. The first input module131may include a microphone, a mouse, a keyboard, a key (for example, a button), or a pen (for example, a passive pen or an active pen). The second input module132may support a designated protocol capable of connecting to the external electronic device102by wire or wirelessly. According to an embodiment, the second input module132may include a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface. The second input module132may include a connector capable of physically connecting to the external electronic device102, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (for example, a headphone connector).

The display module140visually provides information to the user. The display module140may include the display panel141, a scan driver142, and the data driver143. The display module140may further include a window, a chassis, and a bracket for protecting the display panel141.

The display panel141may include a liquid crystal display panel, an organic light emitting display panel, or an inorganic light emitting display panel, and a type of the display panel141is not particularly limited. The display panel141may be a rigid type or a flexible type that may be rolled or folded. The display module140may further include a supporter, a bracket, a heat dissipation member, or the like that supports the display panel141.

The scan driver142may be mounted on the display panel141as a driving chip. In addition, the scan driver142may be integrated in the display panel141. For example, the scan driver142may include an amorphous silicon TFT gate driver circuit (ASG), a low temperature polycrystalline silicon (LTPS) TFT gate driver circuit, or an oxide semiconductor TFT gate driver circuit (OSG) built in the display panel141. The scan driver142receives a control signal from the controller112-1and outputs the scan signals to the display panel141in response to the control signal.

The display panel141may further include an emission driver. The emission driver outputs an emission control signal to the display panel141in response to the control signal received from the controller112-1. The emission driver may be formed separately from the scan driver142or integrated into the scan driver142.

The data driver143receives the control signal from the controller112-1, converts image data into an analog voltage (for example, a data voltage) in response to the control signal, and then outputs the data voltages to the display panel141.

The data driver143may be integrated into another component (for example, the controller112-1). A function of the interface conversion circuit and the timing control circuit of the controller112-1described above may be integrated into the data driver143.

The display module140may further include the emission driver, a voltage generation circuit, and the like. The voltage generation circuit may output various voltages necessary for driving the display panel141.

The power module150supplies power to a component of the electronic device101. The power module150may include a battery that charges a power voltage. The battery may include a non-rechargeable primary cell, and a rechargeable secondary cell or fuel cell. The power module150may include a power management integrated circuit (PMIC). The PMIC supplies optimized power to each of the above-described module and a module to be described later. The power module150may include a wireless power transmission/reception member electrically connected to the battery. The wireless power transmission/reception member may include a plurality of antenna radiators of a coil form.

The electronic device101may further include the internal module190and the external module170. The internal module190may include the sensor module191, the antenna module192, and the sound output module193. The external module170may include the camera module171, a light module172, and the communication module173.

The sensor module191may sense an input by a body of the user or an input by a pen among the first input module131, and may generate an electrical signal or a data value corresponding to the input. The sensor module191may include at least one of the fingerprint sensor191-1, the input sensor191-2, and a digitizer191-3.

The fingerprint sensor191-1may generate a data value corresponding to a fingerprint of the user. The fingerprint sensor191-1may include any one of an optical type fingerprint sensor or a capacitive type fingerprint sensor.

The input sensor191-2may generate a data value corresponding to coordinate information of the input by the body of the user or the pen. The input sensor191-2generates a capacitance change amount by the input as the data value. The input sensor191-2may sense an input by the passive pen or may transmit/receive data to and from the active pen.

The input sensor191-2may measure a biometric signal such as blood pressure, water, or body fat. For example, when the user touches a sensor layer or a sensing panel with a body part and does not move during a certain time, the input sensor191-2may sense the biometric signal based on a change of an electric field by the body part and output information desired by the user to the display module140.

The digitizer191-3may generate a data value corresponding to coordinate information input by a pen. The digitizer191-3generates an electromagnetic change amount by an input as the data value. The digitizer191-3may sense an input by a passive pen or transmit or receive data to or from the active pen.

At least one of the fingerprint sensor191-1, the input sensor191-2, and the digitizer191-3may be implemented as a sensor layer formed on the display panel141through a successive process. The fingerprint sensor191-1, the input sensor191-2, and the digitizer191-3may be disposed on the display panel141, and any one of the fingerprint sensor191-1, the input sensor191-3, and the digitizer191-3, for example, the digitizer191-3may be disposed under the display panel141.

At least two of the fingerprint sensor191-1, the input sensor191-2, and the digitizer191-3may be formed to be integrated into one sensing panel through the same process. When at least two of the fingerprint sensor191-1, the photo sensor1161-2, and the input sensor191-2are integrated into one sensing panel, the sensing panel may be disposed between the display panel141and a window disposed above the display panel141. According to an embodiment, the sensing panel may be disposed on the window, and a position of the sensing panel is not particularly limited.

At least one of the fingerprint sensor191-1, the input sensor191-2, and the digitizer191-3may be embedded in the display panel141. That is, at least one of the fingerprint sensor191-1, the input sensor191-2, and the digitizer191-3may be simultaneously formed through a process of forming elements (for example, a light emitting element, a transistor, and the like) included in the display panel141.

In addition, the sensor module191may generate an electrical signal or a data value corresponding to an internal state or an external state of the electronic device101. The sensor module191may further include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

The antenna module192may include one or more antennas for transmitting a signal or power to an outside or receiving a signal or power from an outside. According to an embodiment, the communication module173may transmit a signal to an external electronic device or receive a signal from an external electronic device through an antenna suitable for a communication method. An antenna pattern of the antenna module192may be integrated into one configuration (for example, the display panel141) of the display module140or the input sensor191-2.

The sound output module193is a device for outputting a sound signal to an outside of the electronic device101, and may include, for example, a speaker used for general purposes such as multimedia playback or recording playback, and a receiver used exclusively for receiving a call. According to an embodiment, the receiver may be formed integrally with or separately from the speaker. A sound output pattern of the sound output module193may be integrated into the display module140.

The camera module171may capture a still image and a moving image. According to an embodiment, the camera module171may include one or more lenses, an image sensor, or an image signal processor. The camera module171may further include an infrared camera capable of measuring presence or absence of the user, a position of the user, a gaze of the user, and the like.

The light module172may provide light. The light module172may include a light emitting diode or a xenon lamp. The light module172may operate in conjunction with the camera module171or may operate independently.

The communication module173may support establishment of a wired or wireless communication channel between the electronic device101and the external electronic device102and communication performance through the established communication channel. The communication module173may include any one or both of a wireless communication module such as a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module, and a wired communication module such as a local area network (LAN) communication module or a power line communication module. The communication module173may communicate with the external electronic device102through a short-range communication network such as Bluetooth, WiFi direct, or infrared data association (IrDA), or a long-range communication network such as a cellular network, the Internet, or a computer network (for example, LAN or WAN). The above-described various types of communication modules1173may be implemented as a single chip or as separate chips.

The input module130, the sensor module191, the camera module171, and the like may be used to control an operation of the display module140in conjunction with the processor110.

The processor110outputs a command or data to the display module140, the sound output module193, the camera module171, or the light module172based on input data received from the input module130. For example, the processor110may generate image data in response to the input data applied through a mouse, an active pen, or the like and output the image data to the display module140, or generate command data in response to the input data and output the command data to the camera module171or the light module172. When the input data is not received from the input module130during a certain time, the processor110may convert an operation mode of the electronic device101to a low power mode or a sleep mode to reduce power consumed in the electronic device101.

The processor110outputs a command or data to the display module140, the sound output module193, the camera module171, or the light module172based on sensing data received from the sensor module191. For example, the processor110may compare authentication data applied by the fingerprint sensor191-1with authentication data stored in the memory180and then execute an application according to a comparison result. The processor110may execute the command based on sensing data sensed by the input sensor191-2or the digitizer191-3, or output corresponding image data to the display module140. When the sensor module191includes a temperature sensor, the processor110may receive temperature data for a measured temperature from the sensor module191and further perform luminance correction or the like on the image data based on the temperature data.

The processor110may receive measurement data for the presence of the user, the position of the user, the gaze of the user, and the like, from the camera module171. The processor110may further perform luminance correction or the like on the image data based on the measurement data. For example, the processor110determining the presence or absence of the user through an input from the camera module171may output image data of which a luminance is corrected through the data conversion circuit112-2or the gamma correction circuit112-3to the display module140.

Some of the above-described components may be connected to each other through a communication method between peripheral devices, for example, a bus, 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 a signal (for example, a command or data) with each other. The processor110may communicate with the display module140through a mutually agreed interface, for example, may use any one of the above-described communication methods, and is not limited to the above-described communication method.

The electronic device101according to various embodiments disclosed in this document may be various types of devices. The electronic device101may include, for example, at least one of a portable communication device (for example, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. The electronic device101according to an embodiment of this document is not limited to the above-described devices.

The drawings referred to so far and the detailed description of the disclosure described herein are merely examples of the disclosure, are used for merely describing the disclosure, and are not intended to limit the meaning and the scope of the disclosure described in claims. Therefore, those skilled in the art will understand that various modifications and equivalent other embodiments are possible from these.