Light sensing pixel of display device, display panel, display device and electronic device

Abstract

The invention discloses a light sensing pixel of a display device, a display panel, a display device and an electronic device. A light sensing pixel of a display device includes: a first organic light emitting diode; a second organic light emitting diode; and a sensing pixel circuit configured to perform a light sensing operation using the first organic light emitting diode in response to the first transmission signal, and perform a light sensing operation using the second organic light emitting diode in response to the second transmission signal.

Description

TECHNICAL FIELD

[0001] Aspects of the inventive concept relate to a light sensing pixel of a display device, a display panel, a display device, and an electronic device. BACKGROUND

[0002] Electronic devices (e.g., smart phones, smart watches, etc.) that perform biometric sensing operations (e.g., fingerprint sensing operations, photoplethysmography ("PPG") sensing operations, etc.) have been developed. These electronic devices can perform biometric sensing operations using sensors that are separate from display devices. In such examples, the size of a display area of a display device can be reduced and the size of a bezel can be increased.

[0003] Attempts have been made to address this issue. For example, an in-cell optical sensor technology has been used that employs optical sensors or light sensing pixels within a display area of a display device.

[0004] The above information disclosed in this Background section is only for enhancement of understanding of the background of the application and, therefore, can contain information that does not constitute prior art. SUMMARY

[0005] Aspects of some embodiments relate to a light sensing pixel of a display device in which two organic photodiodes are connected to a single sensing pixel circuit.

[0006] Aspects of some embodiments relate to a display panel comprising a light sensing pixel in which two organic photodiodes are connected to a single sensing pixel circuit.

[0007] Aspects of some embodiments relate to a display device comprising a light sensing pixel in which two organic photodiodes are connected to a single sensing pixel circuit.

[0008] According to some embodiments of the disclosure, there is provided a light sensing pixel of a display device, the light sensing pixel comprising: a first organic photodiode; a second organic photodiode; and a sensing pixel circuit configured to perform a light sensing operation using the first organic photodiode in response to a first transfer signal and to perform the light sensing operation using the second organic photodiode in response to a second transfer signal.

[0009] In some embodiments, a length of an anode extension of the first organic photodiode to the sensing pixel circuit is equal to a length of an anode extension of the second organic photodiode to the sensing pixel circuit.

[0010] In some embodiments, the first organic photodiode and the second organic photodiode are arranged in different pixel rows and different pixel columns in a display panel of the display device.

[0011] In some embodiments, the first and second organic photodiodes are arranged in a same pixel row and different pixel columns in a display panel of the display device.

[0012] In some embodiments, the first and second organic photodiodes are arranged in different pixel rows and a same pixel column in a display panel of the display device.

[0013] In some embodiments, the sensing pixel circuit includes a first transistor configured to apply a reset voltage to a gate node in response to a reset signal, a second transistor configured to generate a sensing current based on a voltage of the gate node, a third transistor configured to transfer the sensing current to a readout line in response to a scan signal, a fourth transistor configured to connect an anode of the first organic photodiode to the gate node in response to a first transfer signal, and a fifth transistor configured to connect an anode of the second organic photodiode to the gate node in response to a second transfer signal.

[0014] In some embodiments, the first transistor includes a gate configured to receive the reset signal, a first terminal connected to a line configured to transmit the reset voltage, and a second terminal connected to the gate node, the second transistor includes a gate connected to the gate node, a first terminal connected to a line configured to transmit a reference voltage, and a second terminal, and the third transistor includes a gate configured to receive the scan signal, a first terminal connected to the second terminal of the second transistor, and a second terminal connected to the readout line.

[0015] In some embodiments, the fourth transistor includes a gate configured to receive the first transfer signal, a first terminal connected to the gate node, and a second terminal connected to the anode of the first organic photodiode, and the fifth transistor includes a gate configured to receive the second transfer signal, a first terminal connected to the gate node, and a second terminal connected to the anode of the second organic photodiode.

[0016] In some embodiments, the second and third transistors are P-type metal oxide semiconductor (“PMOS”) transistors, and the first, fourth, and fifth transistors are N-type metal oxide semiconductor (“NMOS”) transistors.

[0017] In some embodiments, the first through fifth transistors are NMOS transistors.

[0018] In some embodiments, the first through fifth transistors are PMOS transistors.

[0019] In some embodiments, a voltage of an anode of the first organic photodiode is reset to a reset voltage in a first frame period, the voltage of the anode of the first organic photodiode is changed according to the light intensity in one or more second frame periods, a sensing current corresponding to the voltage of the anode of the first organic photodiode is output to a readout line in a third frame period, a voltage of an anode of the second organic photodiode is reset to a reset voltage in a fourth frame period, the voltage of the anode of the second organic photodiode is changed according to the light intensity in one or more fifth frame periods, a sensing current corresponding to the voltage of the anode of the second organic photodiode is output to the readout line in a sixth frame period, the first transfer signal is at an active level during the first frame period, the one or more second frame periods, and the third frame period, and the second transfer signal is at an active level during the fourth frame period, the one or more fifth frame periods, and the sixth frame period.

[0020] According to some embodiments of the present disclosure, a display panel is provided, the display panel comprising: a plurality of light emitting pixels; a plurality of organic photodiodes; and a plurality of sensing pixel circuits, wherein every four of the plurality of light emitting pixels are arranged with one of the plurality of organic photodiodes, and wherein two of the plurality of organic photodiodes are connected to one of the plurality of sensing pixel circuits.

[0021] In some embodiments, the respective anode extensions of the two organic photodiodes connected to one sensing pixel circuit have a same length to the one sensing pixel circuit.

[0022] In some embodiments, the plurality of organic photodiodes comprises: a first organic photodiode arranged in a first pixel row and a second pixel column; and a second organic photodiode arranged in a second pixel row and a fourth pixel column, wherein the first organic photodiode and the second organic photodiode are connected to a same one of the plurality of sensing pixel circuits.

[0023] In some embodiments, the plurality of sensing pixel circuits connected to the plurality of organic photodiodes arranged in four pixel rows are connected to two of four scan lines arranged in the four pixel rows.

[0024] In some embodiments, the plurality of sensing pixel circuits connected to the plurality of organic photodiodes arranged in four pixel columns are connected to two readout lines.

[0025] In some embodiments, the display panel further comprises: a multiplexer configured to connect the two readout lines to one sensing channel.

[0026] In some embodiments, the plurality of organic photodiodes includes: a first organic photodiode arranged in a first pixel row and a second pixel column; and a second organic photodiode arranged in a third pixel row and the second pixel column, and the first organic photodiode and the second organic photodiode are connected to a same one of the plurality of sensing pixel circuits.

[0027] In some embodiments, the plurality of sensing pixel circuits connected to the plurality of organic photodiodes arranged in the four pixel rows are connected to four scan lines arranged in the four pixel rows.

[0028] In some embodiments, the plurality of sensing pixel circuits connected to the plurality of organic photodiodes arranged in the four pixel columns are connected to one readout line.

[0029] In some embodiments, the plurality of organic photodiodes includes: a first organic photodiode arranged in a first pixel row and a second pixel column; and a second organic photodiode arranged in a third pixel row and the second pixel column, and the first organic photodiode and the second organic photodiode are connected to a same one of the plurality of sensing pixel circuits.

[0030] In some embodiments, the plurality of sensing pixel circuits connected to the plurality of organic photodiodes arranged in the four pixel rows are connected to one scan line of four scan lines arranged in the four pixel rows.

[0031] In some embodiments, the plurality of sensing pixel circuits connected to the plurality of organic photodiodes arranged in the four pixel columns are connected to four readout lines.

[0032] In some embodiments, the display panel further includes: a multiplexer configured to connect the four readout lines to one sensing channel.

[0033] In some embodiments, each of the plurality of sensing pixel circuits includes: a first transistor configured to apply a reset voltage to a gate node in response to a reset signal; a second transistor configured to generate a sensing current based on a voltage of the gate node; a third transistor configured to transmit the sensing current to a readout line in response to a scan signal; a fourth transistor configured to connect an anode of a first one of the plurality of organic photodiodes to the gate node in response to a first transmission signal; and a fifth transistor configured to connect an anode of a second one of the plurality of organic photodiodes to the gate node in response to a second transmission signal.

[0034] According to some embodiments of the disclosure, a display device is provided, the display device including: a display panel including a plurality of light emitting pixels, a plurality of organic photodiodes, and a plurality of sensing pixel circuits; a data driver configured to provide a data signal to the plurality of light emitting pixels; a scan driver configured to provide a scan signal to the plurality of light emitting pixels and the plurality of sensing pixel circuits; and a readout circuit connected to the plurality of sensing pixel circuits through a plurality of readout lines, wherein every four of the plurality of light emitting pixels are arranged with one of the plurality of organic photodiodes, and wherein two of the plurality of organic photodiodes are connected to one of the plurality of sensing pixel circuits.

[0035] In some embodiments, each of the plurality of sensing pixel circuits includes: a first transistor configured to apply a reset voltage to a gate node in response to a reset signal; a second transistor configured to generate a sensing current based on a voltage of the gate node; a third transistor configured to transfer the sensing current to the readout line in response to the scan signal; a fourth transistor configured to connect an anode of a first organic photodiode of the plurality of organic photodiodes to the gate node in response to a first transfer signal; and a fifth transistor configured to connect an anode of a second organic photodiode of the plurality of organic photodiodes to the gate node in response to a second transfer signal.

[0036] According to some embodiments of the disclosure, an electronic device including the display device as described above is provided.

[0037] In some embodiments, the electronic device is a smartphone, a television, a monitor, a tablet computer (tablet personal computer (“PC”)), an electric vehicle, a mobile phone, a mobile communication terminal, an electronic notebook, an electronic book, a portable multimedia player (“PMP”), a navigation device, an ultra-mobile PC (“UMPC”), a laptop computer, a billboard, an Internet of Things (“IoT”) device, a smart watch, a watch phone, or a head-mounted display (“HMD”).

[0038] As described above, in the light sensing pixel, the display panel, and the display device according to some embodiments, two organic photodiodes can be connected to one sensing pixel circuit. Also, the respective anode extensions of the two organic photodiodes can have substantially the same length to one sensing pixel circuit. Accordingly, resolution of the display panel can be improved, and light sensing accuracy can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0039] The illustrative, non-limiting embodiments will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0040] Figure 1 is a circuit diagram illustrating a light sensing pixel according to some embodiments of the disclosure.

[0041] Figure 2 is a timing diagram for describing operation of a light sensing pixel according to some embodiments of the present disclosure.

[0042] Figure 3 is a circuit diagram for describing operation of a light sensing pixel of Figure 1 in a first frame period according to some embodiments of the present disclosure.

[0043] Figure 4 is a circuit diagram for describing operation of a light sensing pixel of Figure 1 in a second frame period according to some embodiments of the present disclosure.

[0044] Figure 5 is a circuit diagram for describing operation of a light sensing pixel of Figure 1 in a third frame period according to some embodiments of the present disclosure.

[0045] Figure 6 is a circuit diagram for describing operation of a light sensing pixel of Figure 1 in a fourth frame period according to some embodiments of the present disclosure.

[0046] Figure 7 is a circuit diagram for describing operation of a light sensing pixel of Figure 1 in a fifth frame period according to some embodiments of the present disclosure.

[0047] Figure 8 is a circuit diagram for describing operation of a light sensing pixel of Figure 1 in a sixth frame period according to some embodiments of the present disclosure.

[0048] Figure 9 is a circuit diagram showing a light sensing pixel according to some embodiments of the present disclosure.

[0049] Figure 10 is a circuit diagram showing a light sensing pixel according to some embodiments of the present disclosure.

[0050] Figure 11 is a diagram showing a display panel according to some embodiments of the present disclosure.

[0051] Figure 12 is a diagram showing a display panel in which one organic photodiode is connected to one sensing pixel circuit and two organic photodiodes are connected to one sensing pixel circuit according to some embodiments of the present disclosure.

[0052] Figure 13 is a diagram showing a display panel according to some embodiments of the present disclosure.

[0053] Figure 14is a timing diagram for describing an operation of a display panel according to some embodiments of the disclosure. Figure 13 is a timing diagram for describing an operation of a display panel according to some embodiments of the disclosure.

[0054] Figure 15 is a diagram illustrating a display panel according to some embodiments of the disclosure.

[0055] Figure 16 is a diagram illustrating a display panel according to some embodiments of the disclosure.

[0056] Figure 17 is a diagram illustrating a display panel according to some embodiments of the disclosure.

[0057] Figure 18 is a timing diagram for describing an operation of a display panel according to some embodiments of the disclosure. Figure 17 is a timing diagram for describing an operation of a display panel according to some embodiments of the disclosure.

[0058] Figure 19 is a block diagram illustrating a display apparatus according to some embodiments of the disclosure.

[0059] Figure 20 is a block diagram illustrating an electronic apparatus including a display apparatus according to some embodiments of the disclosure. DETAILED DESCRIPTION

[0060] Embodiments will be described more fully hereinafter with reference to the accompanying drawings. Like or similar components can be designated by like reference numerals, and the repeated description of which can be omitted.

[0061] In the present disclosure, processes, elements, and techniques can not be described or can be described only briefly in order to not unnecessarily obscure aspects and features of the present disclosure to those skilled in the art. In the drawings, the relative sizes of elements, layers, and regions can be exaggerated for clarity.

[0062] Figure 1 is a circuit diagram illustrating a light sensing pixel according to some embodiments of the disclosure.

[0063] Referring to Figure 1 , the light sensing pixel 100 according to some embodiments can include a first organic photodiode OPD1, a second organic photodiode OPD2, and a sensing pixel circuit SPC connected to both the first organic photodiode OPD1 and the second organic photodiode OPD2. In some embodiments, the sensing pixel circuit SPC can include a first transistor T1, a second transistor T2, a third transistor T3, a fourth transistor T4, and a fifth transistor T5.

[0064] The first transistor T1 can apply a reset voltage VRST to the gate node NG in response to a reset signal GR. In some embodiments, the reset signal GR can be a global signal applied to all light-sensing pixels 100 of the display panel at the same time or substantially at the same time. Also, the reset voltage VRST can be lower than the power supply voltage ELVSS (e.g., a low power supply voltage) and the reference voltage VREF. When the first transistor T1 applies the reset voltage VRST to the gate node NG, the voltage of the gate node NG can be reset to the reset voltage VRST. In examples in which the fourth transistor T4 is turned on when the first transistor T1 is turned on, the anode voltage of the first organic photodiode OPD1 can also be reset to the reset voltage VRST. Also, in examples in which the fifth transistor T5 is turned on when the first transistor T1 is turned on, the anode voltage of the second organic photodiode OPD2 can also be reset to the reset voltage VRST. In some embodiments, the first transistor T1 can include a gate that receives the reset signal GR, a first terminal connected to a line that transmits the reset voltage VRST, and a second terminal connected to the gate node NG.

[0065] The second transistor T2 can generate a sensing current based on the voltage of the gate node NG. For example, when the fourth transistor T4 is turned on and the gate node NG is connected to the anode of the first organic photodiode OPD1, the second transistor T2 can generate a sensing current based on the anode voltage of the first organic photodiode OPD1. Also, when the fifth transistor T5 is turned on and the gate node NG is connected to the anode of the second organic photodiode OPD2, the second transistor T2 can generate a sensing current based on the anode voltage of the second organic photodiode OPD2. In some embodiments, the second transistor T2 can include a gate connected to the gate node NG, a first terminal connected to a line that transmits the reference voltage VREF, and a second terminal. In some embodiments, the reference voltage VREF can have substantially the same voltage level as the voltage level of the power supply voltage ELVSS, but is not limited thereto.

[0066] The third transistor T3 can connect the second terminal of the second transistor T2 to the readout line RL in response to a scan signal SS. Accordingly, when the third transistor T3 is turned on, the sensing current generated by the second transistor T2 can be transmitted to the readout circuit 950 through the readout line RL. Figure 19 The sensing current generated by the second transistor T2 can be provided to the readout circuit 950 shown in FIG. 9B. In some embodiments, the scan signal SS can be a scan signal SS applied to light-emitting pixels included in the display panel. Also, in some embodiments, the third transistor T3 can include a gate that receives the scan signal SS, a first terminal connected to the second terminal of the second transistor T2, and a second terminal connected to the readout line RL.

[0067] The fourth transistor T4 can connect the anode of the first organic photodiode OPD1 to the gate node NG in response to the first transfer signal TG1, and the fifth transistor T5 can connect the anode of the second organic photodiode OPD2 to the gate node NG in response to the second transfer signal TG2. Accordingly, the sensing pixel circuit SPC can perform a light sensing operation using the first organic photodiode OPD1 in response to the first transfer signal TG1. That is, when the first transfer signal TG1 is at an active level (also referred to as an activation level or an on level; for example, a high level), the anode of the first organic photodiode OPD1 can be connected to the gate node NG, and a sensing current corresponding to an intensity of light (e.g., light incident on the first organic photodiode OPD1) applied to the first organic photodiode OPD1 can be output through the readout line RL. Further, the sensing pixel circuit SPC can perform a light sensing operation using the second organic photodiode OPD2 in response to the second transfer signal TG2. That is, when the second transfer signal TG2 is at an active level, the anode of the second organic photodiode OPD2 can be connected to the gate node NG, and a sensing current corresponding to an intensity of light (e.g., light incident on the second organic photodiode OPD2) applied to the second organic photodiode OPD2 can be output through the readout line RL. In some embodiments, the fourth transistor T4 can include a gate that receives the first transfer signal TG1, a first terminal connected to the gate node NG, and a second terminal connected to the anode of the first organic photodiode OPD1, and the fifth transistor T5 can include a gate that receives the second transfer signal TG2, a first terminal connected to the gate node NG, and a second terminal connected to the anode of the second organic photodiode OPD2.

[0068] In some embodiments, as shown in FIG. 1A, the second transistor T2 and the third transistor T3 can be P-type metal-oxide-semiconductor (“PMOS”) transistors, and the first transistor T1, the fourth transistor T4, and the fifth transistor T5 can be N-type metal-oxide-semiconductor (“NMOS”) transistors, but are not limited thereto. Figure 1 In some embodiments, as shown in FIG. 1A, the second transistor T2 and the third transistor T3 can be P-type metal-oxide-semiconductor (“PMOS”) transistors, and the first transistor T1, the fourth transistor T4, and the fifth transistor T5 can be N-type metal-oxide-semiconductor (“NMOS”) transistors, but are not limited thereto. Figure 9 In some embodiments, as shown in FIG. 1A, the second transistor T2 and the third transistor T3 can be P-type metal-oxide-semiconductor (“PMOS”) transistors, and the first transistor T1, the fourth transistor T4, and the fifth transistor T5 can be N-type metal-oxide-semiconductor (“NMOS”) transistors, but are not limited thereto. Figure 10 In some embodiments, as shown in FIG. 1A, the second transistor T2 and the third transistor T3 can be P-type metal-oxide-semiconductor (“PMOS”) transistors, and the first transistor T1, the fourth transistor T4, and the fifth transistor T5 can be N-type metal-oxide-semiconductor (“NMOS”) transistors, but are not limited thereto.

[0069] The first organic photodiode OPD1 and the second organic photodiode OPD2 can be used to measure light intensity. For example, when the anode of the first organic photodiode OPD1 is connected to the gate node NG, the anode voltage of the first organic photodiode OPD1 can be reset to the reset voltage VRST and then can change according to the intensity of light applied to (e.g., incident on) the first organic photodiode OPD1. In such an example, the sense pixel circuit SPC can output a sense current corresponding to the intensity of light applied to (e.g., incident on) the first organic photodiode OPD1 based on the anode voltage of the first organic photodiode OPD1. Further, when the anode of the second organic photodiode OPD2 is connected to the gate node NG, the anode voltage of the second organic photodiode OPD2 can be reset to the reset voltage VRST and then can change according to the intensity of light applied to (e.g., incident on) the second organic photodiode OPD2. In such an example, the sense pixel circuit SPC can output a sense current corresponding to the intensity of light applied to (e.g., incident on) the second organic photodiode OPD2 based on the anode voltage of the second organic photodiode OPD2. In some embodiments, the first organic photodiode OPD1 can include an anode connected to the second terminal of the fourth transistor T4 and a cathode connected to a line that transmits a power supply voltage ELVSS, and the second organic photodiode OPD2 can include an anode connected to the second terminal of the fifth transistor T5 and a cathode connected to a line that transmits the power supply voltage ELVSS. In some embodiments, the power supply voltage ELVSS can be a low power supply voltage ELVSS used for light emitting pixels included in a display panel.

[0070] In some embodiments, as described below with reference to Figure 11 and Figure 13 the first organic photodiode OPD1 and the second organic photodiode OPD2 can be arranged in different pixel rows and different pixel columns. In some other embodiments, as described below with reference to Figure 15 the first organic photodiode OPD1 and the second organic photodiode OPD2 can be arranged in the same pixel row and different pixel columns. In yet some other embodiments, as described below with reference to Figure 16 and Figure 17 the first organic photodiode OPD1 and the second organic photodiode OPD2 can be arranged in different pixel rows and the same pixel column.

[0071] In the display apparatus according to some embodiments, the two organic photodiodes OPD1 and OPD2 can be connected to a single sensing pixel circuit SPC, and the single sensing pixel circuit SPC can drive the two organic photodiodes OPD1 and OPD2. As described below with reference to Figure 12 In the display panel 450 in which the respective organic photodiodes OPD1’ and OPD2’ are connected to different sensing pixel circuits SPC1’ and SPC2’, the organic photodiodes OPD1’ and OPD2’ can have anode extensions AE with different lengths (see, for example, Figure 12 ) In the display apparatus according to some embodiments, however, the first organic photodiode OPD1 and the second organic photodiode OPD2 can be connected to the same sensing pixel circuit SPC, and a length LI of the anode extension AE1 of the first organic photodiode OPD1 to the sensing pixel circuit SPC1 (see, for example, Figure 12 ) can be substantially equal to a length L2 of the anode extension AE2 of the second organic photodiode OPD2 to the sensing pixel circuit SPC1 (see, for example, Figure 12 ) Therefore, in the display apparatus according to some embodiments, since the two organic photodiodes OPD1 and OPD2 are driven by a single sensing pixel circuit SPC, the resolution of the display panel can be improved (e.g., increased). Further, in the display apparatus according to some embodiments, since the anode extensions AE1 and AE2 of the first organic photodiode OPD1 and the second organic photodiode OPD2 (see, for example, Figure 12 ) have substantially the same lengths LI and L2, the light sensing accuracy can be improved.

[0072] Figure 2 is a timing diagram for describing the operation of a light sensing pixel according to some embodiments of the present disclosure; Figure 3 is a circuit diagram for describing the operation of the light sensing pixel of Figure 1 in a first frame period according to some embodiments of the present disclosure; Figure 4 is a circuit diagram for describing the operation of the light sensing pixel of Figure 1 in a second frame period according to some embodiments of the present disclosure; Figure 5 is a circuit diagram for describing the operation of the light sensing pixel of Figure 1 in a third frame period according to some embodiments of the present disclosure; Figure 6 is a circuit diagram for describing the operation of the light sensing pixel of Figure 1 in a fourth frame period according to some embodiments of the present disclosure; Figure 7 is a circuit diagram for describing the operation of the light sensing pixel of Figure 1 in a fifth frame period according to some embodiments of the present disclosure; Figure 8is a circuit diagram of operation of a light sensing pixel in a sixth frame period according to some embodiments of the present disclosure Figure 1 is a circuit diagram of operation of a light sensing pixel in a sixth frame period according to some embodiments of the present disclosure Figure 9 is a circuit diagram of operation of a light sensing pixel in a sixth frame period according to some embodiments of the present disclosure Figure 10 is a circuit diagram of operation of a light sensing pixel in a sixth frame period according to some embodiments of the present disclosure

[0073] Referring to Figure 1 and Figure 2 In the first frame period FP1 to the third frame period FP3, the first transfer signal TG1 can be at an active level (e.g., a high level), the anode of the first organic photodiode OPD1 can be connected to the gate node NG, and a light sensing operation using the first organic photodiode OPD1 can be performed.

[0074] In the first frame period FP1, the voltage of the gate node NG and the anode voltage of the first organic photodiode OPD1 can be reset to a reset voltage VRST. In some embodiments, the first frame period FP1 can be referred to as a first reset period. For example, as shown in Figure 3 the first transistor T1 can turn on in response to the reset signal GR being at an active level, the fourth transistor T4 can turn on in response to the first transfer signal TG1 being at an active level, and the fifth transistor T5 can turn off in response to the second transfer signal TG2 being at an inactive level (also referred to as an inactive level or an off level; e.g., a low level). The first transistor T1 can apply the reset voltage VRST to the gate node NG, and thus the voltage of the gate node NG can be reset to the reset voltage VRST. In addition, the fourth transistor T4 can connect the anode of the first organic photodiode OPD1 to the gate node NG, and thus the anode voltage of the first organic photodiode OPD1 can also be reset to the reset voltage VRST.

[0075] In one or more second frame periods FP2, the anode voltage of the first organic photodiode OPD1 and the voltage of the gate node NG can change according to the intensity of light applied to (e.g., incident on) the first organic photodiode OPD1. In some embodiments, the second frame period FP2 can be referred to as a first exposure and integration period. For example, as shown in Figure 4As shown in FIG. 6, the fourth transistor T4 can turn on in response to the first transfer signal TG1 being at an active level and can connect the anode of the first organic photodiode OPD1 to the gate node NG. In addition, the first transistor T1 and the fifth transistor T5 can be turned off. During one or more second frame periods FP2, when light is applied to (e.g., incident on) the first organic photodiode OPD1, the anode voltage of the first organic photodiode OPD1 can change to a first sense voltage VSEN1 corresponding to the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1. For example, when the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1 is relatively high, the anode voltage of the first organic photodiode OPD1 can increase to the first sense voltage VSEN1 having a relatively high voltage level. In addition, when the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1 is relatively low, the anode voltage of the first organic photodiode OPD1 can increase to the first sense voltage VSEN1 having a relatively low voltage level. In addition, since the anode of the first organic photodiode OPD1 is connected to the gate node NG, the voltage of the gate node NG can also change to the first sense voltage VSEN1 corresponding to the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1.

[0076] In the third frame period FP3, a sense current corresponding to the voltage of the gate node NG or a sense current corresponding to the anode voltage of the first organic photodiode OPD1 can be output to the readout line RL. In some embodiments, the third frame period FP3 can be referred to as a first readout period. For example, as shown in FIG. 6, the third frame period FP3 can include a first readout period RP1 and a second readout period RP2. During the first readout period RP1, the first transistor T1 can be turned on in response to the first readout signal RDS1 being at an active level. In addition, the fourth transistor T4 and the fifth transistor T5 can be turned off. During the second readout period RP2, the fourth transistor T4 can be turned on in response to the second readout signal RDS2 being at an active level. In addition, the first transistor T1 and the fifth transistor T5 can be turned off. Figure 5As shown in FIG. 10B, the second transistor T2 can generate the first sensing current ISEN1 based on the voltage of the gate node NG or the first sensing voltage VSEN1 corresponding to the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1. Thus, the amount of the first sensing current ISEN1 can be determined according to the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1. For example, when the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1 is relatively high, the first sensing voltage VSEN1 can be relatively high, and the first sensing current ISEN1 can be relatively small. In addition, when the intensity of the light applied to (e.g., incident on) the first organic photodiode OPD1 is relatively low, the first sensing voltage VSEN1 can be relatively low, and the first sensing current ISEN1 can be relatively large. The third transistor T3 can be turned on in response to the scan signal SS being at an active level (e.g., a low level), and can output the first sensing current ISEN1 generated by the second transistor T2 to the readout line RL. In some embodiments, the scan signal SS can be sequentially applied on a pixel-by-pixel basis, and the first sensing current ISEN1 of the light sensing pixel 100 of the display panel can be sequentially output on a pixel-by-pixel basis. In addition, Figure 19 The readout circuit 950 shown in FIG. 10B can receive the first sensing current ISEN1 through the readout line RL, and can generate the digital sensing signal DSS corresponding to the first sensing current ISEN1. In addition, in the third frame period FP3, as shown in FIG. 10B, the first transistor T1 and the fifth transistor T5 can be turned off, and the fourth transistor T4 can be maintained in an on state (e.g., in an active state). In some other embodiments, in the third frame period FP3, the first transfer signal TG1 can be at a non-active level, and the fourth transistor T4 can also be turned off. Figure 5 As shown in FIG. 10B, the first transistor T1 and the fifth transistor T5 can be turned off, and the fourth transistor T4 can be maintained in an on state (e.g., in an active state). In some other embodiments, in the third frame period FP3, the first transfer signal TG1 can be at a non-active level, and the fourth transistor T4 can also be turned off.

[0077] In addition, in the fourth frame period FP4 to the sixth frame period FP6, the second transfer signal TG2 can be at an active level (e.g., a high level), the anode of the second organic photodiode OPD2 can be connected to the gate node NG, and the light sensing operation using the second organic photodiode OPD2 can be performed.

[0078] In the fourth frame period FP4, the voltage of the gate node NG and the anode voltage of the second organic photodiode OPD2 can be reset to the reset voltage VRST. In some embodiments, the fourth frame period FP4 can be referred to as a second reset period. For example, as shown in FIG. 10B, the first reset signal RST1 can be at a high level in the fourth frame period FP4, and the second reset signal RST2 can be at a low level in the fourth frame period FP4. Figure 6As shown in FIG. 6, the first transistor Tl can turn on in response to the reset signal GR being at an active level, the fifth transistor T5 can turn on in response to the second transfer signal TG2 being at an active level, and the fourth transistor T4 can turn off in response to the first transfer signal TGl being at an inactive level (e.g., a low level). The first transistor Tl can apply the reset voltage VRST to the gate node NG, and thus the voltage of the gate node NG can be reset to the reset voltage VRST. In addition, the fifth transistor T5 can connect the anode of the second organic photodiode OPD2 to the gate node NG, and thus the anode voltage of the second organic photodiode OPD2 can also be reset to the reset voltage VRST.

[0079] In one or more fifth frame periods FP5, the anode voltage of the second organic photodiode OPD2 and the voltage of the gate node NG can change according to the intensity of light applied to (e.g., incident on) the second organic photodiode OPD2. In some embodiments, the fifth frame periods FP5 can be referred to as second exposure and integration periods. For example, as shown in FIG. 6, the first transistor Tl can turn on in response to the reset signal GR being at an active level, the fifth transistor T5 can turn on in response to the second transfer signal TG2 being at an active level, and the fourth transistor T4 can turn off in response to the first transfer signal TGl being at an inactive level (e.g., a low level). The first transistor Tl can apply the reset voltage VRST to the gate node NG, and thus the voltage of the gate node NG can be reset to the reset voltage VRST. In addition, the fifth transistor T5 can connect the anode of the second organic photodiode OPD2 to the gate node NG, and thus the anode voltage of the second organic photodiode OPD2 can also be reset to the reset voltage VRST. Figure 7 As shown in FIG. 6, the fifth transistor T5 can turn on in response to the second transfer signal TG2 being at an active level, and can connect the anode of the second organic photodiode OPD2 to the gate node NG. In addition, the first transistor Tl and the fourth transistor T4 can turn off. During the one or more fifth frame periods FP5, when light is applied to (e.g., incident on) the second organic photodiode OPD2, the anode voltage of the second organic photodiode OPD2 can change to a second sense voltage VSEN2 corresponding to the intensity of light applied to (e.g., incident on) the second organic photodiode OPD2. For example, when the intensity of light applied to (e.g., incident on) the second organic photodiode OPD2 is relatively high, the anode voltage of the second organic photodiode OPD2 can increase to a second sense voltage VSEN2 having a relatively high voltage level. When the intensity of light applied to (e.g., incident on) the second organic photodiode OPD2 is relatively low, the anode voltage of the second organic photodiode OPD2 can increase to a second sense voltage VSEN2 having a relatively low voltage level. In addition, since the anode of the second organic photodiode OPD2 is connected to the gate node NG, the voltage of the gate node NG can also change to the second sense voltage VSEN2 corresponding to the intensity of light applied to (e.g., incident on) the second organic photodiode OPD2.

[0080] In the sixth frame cycle FP6, a sense current corresponding to the voltage of the gate node NG or a sense current corresponding to the anode voltage of the second organic photodiode OPD2 can be output to the readout line RL. In some embodiments, the sixth frame cycle FP6 can be referred to as the second readout cycle. For example, as... Figure 8 As shown, the second transistor T2 can generate a second sensing current ISEN2 based on the voltage of the gate node NG or a second sensing voltage VSEN2 corresponding to the intensity of light applied to the second organic photodiode OPD2 (e.g., incident on the second organic photodiode OPD2). Therefore, the amount of the second sensing current ISEN2 can be determined according to the intensity of light applied to the second organic photodiode OPD2 (e.g., incident on the second organic photodiode OPD2). For example, when the intensity of light applied to the second organic photodiode OPD2 (e.g., incident on the second organic photodiode OPD2) is relatively high, the second sensing voltage VSEN2 can be relatively high, and the second sensing current ISEN2 can be relatively small. Furthermore, when the intensity of light applied to the second organic photodiode OPD2 (e.g., incident on the second organic photodiode OPD2) is relatively low, the second sensing voltage VSEN2 can be relatively low, and the second sensing current ISEN2 can be relatively large. The third transistor T3 can be turned on in response to the scan signal SS being at an active level (e.g., low level), and can output the second sensing current ISEN2 generated by the second transistor T2 to the readout line RL. In some embodiments, the scan signal SS can be applied sequentially on a pixel-by-pixel basis, and the second sensing current ISEN2 of the light-sensing pixel 100 of the display panel can be output sequentially on a pixel-by-pixel basis. Furthermore, Figure 19 The readout circuit 950 shown can receive the second sensing current ISEN2 through the readout line RL and can generate a digital sensing signal DSS corresponding to the second sensing current ISEN2. Furthermore, in the sixth frame period FP6, as... Figure 8 As shown, the first transistor T1 and the fourth transistor T4 can be turned off, and the fifth transistor T5 can remain on. In some other embodiments, during the sixth frame period FP6, the second transmission signal TG2 can be at an inactive level, and the fifth transistor T5 can also be turned off.

[0081] As described above, during the first frame period FP1 to the third frame period FP3, the first transmission signal TG1 can be at an active level, and a photosensing operation using the first organic photodiode OPD1 can be performed. Furthermore, during the fourth frame period FP4 to the sixth frame period FP6, the second transmission signal TG2 can be at an active level, and a photosensing operation using the second organic photodiode OPD2 can be performed.

[0082] Figure 9is a circuit diagram illustrating a light-sensing pixel according to some embodiments of the present disclosure.

[0083] Referring to Figure 9 , the light-sensing pixel 200 according to some embodiments can include a first organic photodiode OPD1, a second organic photodiode OPD2, a first transistor T1, a second transistor T2’, a third transistor T3’, a fourth transistor T4, and a fifth transistor T5. Except that the second transistor T2’ and the third transistor T3’ are implemented as NMOS transistors, the light-sensing pixel 200 according to some embodiments can have substantially the same configuration and substantially the same operational functions as the light-sensing pixel 100 according to some embodiments. Figure 9 Figure 1

[0084] The second transistor T2’ can generate a sensing current based on a voltage of the gate node NG. As the voltage of the gate node NG increases, an amount of the sensing current generated by the second transistor T2’ implemented as an NMOS transistor can increase. Further, the third transistor T3’ can connect the second transistor T2’ to the readout line RL in response to a scan signal SS’. The scan signal SS’ can have a high level as an active level, and can have a low level as an inactive level. The scan signal SS’ having the high level can be sequentially applied on a pixel-by-pixel basis.

[0085] Figure 10 is a circuit diagram illustrating a light-sensing pixel according to some embodiments of the present disclosure.

[0086] Referring to Figure 10 , the light-sensing pixel 300 according to some embodiments can include a first organic photodiode OPD1, a second organic photodiode OPD2, a first transistor T1’, a second transistor T2, a third transistor T3, a fourth transistor T4’, and a fifth transistor T5’. Except that the first transistor T1’, the fourth transistor T4’, and the fifth transistor T5’ are implemented as PMOS transistors, the light-sensing pixel 300 according to some embodiments can have substantially the same configuration and substantially the same operational functions as the light-sensing pixel 100 according to some embodiments. Figure 10 Figure 1

[0087] The first transistor T1’ can apply a reset voltage VRST to the gate node NG in response to a reset signal GR’, the fourth transistor T4’ can connect the anode of the first organic photodiode OPD1 to the gate node NG in response to a first transfer signal TG1’, and the fifth transistor T5’ can connect the anode of the second organic photodiode OPD2 to the gate node NG in response to a second transfer signal TG2’. The reset signal GR’, the first transfer signal TG1’, and the second transfer signal TG2’ can have a low level as an active level, and can have a high level as an inactive level.​​​​

[0088] Although Figure 1 An example is shown in which the second transistor T2 and the third transistor T3 are PMOS transistors, and the first transistor T1, the fourth transistor T4, and the fifth transistor T5 are NMOS transistors, but Figure 9 An example is shown in which all of the first transistor T1, the second transistor T2’, the third transistor T3’, the fourth transistor T4, and the fifth transistor T5 are NMOS transistors, and Figure 10 An example is shown in which all of the first transistor T1’, the second transistor T2, the third transistor T3, the fourth transistor T4’, and the fifth transistor T5’ are PMOS transistors, the light-sensing pixel according to some embodiments is not limited to Figure 1 、 Figure 9 and Figure 10 examples.

[0089] Figure 11 is a diagram showing a display panel according to some embodiments of the present disclosure; and Figure 12 is a diagram showing a display panel according to some embodiments of the present disclosure in which one organic photodiode is connected to one sensing pixel circuit and two organic photodiodes are connected to one sensing pixel circuit.

[0090] Referring to Figure 11 , the display panel 400 according to some embodiments can include a plurality of light-emitting pixels RPX, GPX, and BPX, a plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8, and a plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4. Although for ease of explanation, Figure 11 An example is shown in which the display panel 400 has four pixel rows PXR1, PXR2, PXR3, and PXR4 and eight pixel columns PXC1, PXC2, PXC3, PXC4, PXC5, PXC6, PXC7, and PXC8, but the display panel 400 according to some embodiments is not limited to Figure 11 examples. According to some embodiments, the display panel 400 can include four or more pixel rows and eight or more pixel columns.

[0091] In some embodiments, as Figure 11As shown in FIG. 6, the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. In some other embodiments, the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. Further, in some embodiments, as shown in FIG. 7, the blue light emitting pixels BPX and the red light emitting pixels RPX can be alternately arranged in each odd pixel column PXC1, PXC3, PXC5, and PXC7, and the green light emitting pixels GPX can be arranged in each even pixel column PXC2, PXC4, PXC6, and PXC8. However, the pixel arrangement according to some embodiments is not limited to the examples of FIGS. 6 and 7. Figure 11 As shown in FIG. 6, the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. In some other embodiments, the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. Further, in some embodiments, as shown in FIG. 7, the blue light emitting pixels BPX and the red light emitting pixels RPX can be alternately arranged in each odd pixel column PXC1, PXC3, PXC5, and PXC7, and the green light emitting pixels GPX can be arranged in each even pixel column PXC2, PXC4, PXC6, and PXC8. However, the pixel arrangement according to some embodiments is not limited to the examples of FIGS. 6 and 7. Figure 11 As shown in FIG. 6, the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. In some other embodiments, the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. Further, in some embodiments, as shown in FIG. 7, the blue light emitting pixels BPX and the red light emitting pixels RPX can be alternately arranged in each odd pixel column PXC1, PXC3, PXC5, and PXC7, and the green light emitting pixels GPX can be arranged in each even pixel column PXC2, PXC4, PXC6, and PXC8. However, the pixel arrangement according to some embodiments is not limited to the examples of FIGS. 6 and 7.

[0092] In the display panel 400 according to some embodiments, one organic photodiode can be arranged for every four light emitting pixels RPX, GPX, and BPX. For example, in each pixel row (e.g., in the first pixel row PXR1), four light emitting pixels RPX, GPX, and BPX can be arranged in four consecutive pixel columns (e.g., the first pixel column PXC1, the second pixel column PXC2, the third pixel column PXC3, and the fourth pixel column PXC4), and one organic photodiode (e.g., the first organic photodiode OPD1) can be arranged in one pixel column (e.g., the second pixel column PXC2) of the four consecutive pixel columns. Further, in some embodiments, as shown in FIG. 8, one blue light emitting pixel BPX, two green light emitting pixels GPX, and one red light emitting pixel RPX can be arranged in a diamond shape, and one organic photodiode can be arranged at the center of the diamond shape. Figure 11 As shown in FIG. 6, the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. In some other embodiments, the red light emitting pixels RPX, the green light emitting pixels GPX, the blue light emitting pixels BPX, and the green light emitting pixels GPX can be sequentially arranged in each odd pixel row PXR1 and PXR3, and the blue light emitting pixels BPX, the green light emitting pixels GPX, the red light emitting pixels RPX, and the green light emitting pixels GPX can be sequentially arranged in each even pixel row PXR2 and PXR4. Further, in some embodiments, as shown in FIG. 7, the blue light emitting pixels BPX and the red light emitting pixels RPX can be alternately arranged in each odd pixel column PXC1, PXC3, PXC5, and PXC7, and the green light emitting pixels GPX can be arranged in each even pixel column PXC2, PXC4, PXC6, and PXC8. However, the pixel arrangement according to some embodiments is not limited to the examples of FIGS. 6 and 7.

[0093] Further, in the display panel 400 according to some embodiments, two organic photodiodes can be connected to one sensing pixel circuit, and the two organic photodiodes and the one sensing pixel circuit can form one light sensing pixel. For example, a first organic photodiode OPD1 located in the first pixel row PXR1 and the second pixel column PXC2 can be connected to a first sensing pixel circuit SPC1 located in the first pixel row PXR1 and the third pixel column PXC3; a second organic photodiode OPD2 located in the second pixel row PXR2 and the fourth pixel column PXC4 can be connected to the same first sensing pixel circuit SPC1; and the first organic photodiode OPD1 and the second organic photodiode OPD2 and the first sensing pixel circuit SPC1 can form a first light sensing pixel LSPX1. Further, a third organic photodiode OPD3 located in the first pixel row PXR1 and the sixth pixel column PXC6 can be connected to a second sensing pixel circuit SPC2 located in the first pixel row PXR1 and the seventh pixel column PXC7; a fourth organic photodiode OPD4 located in the second pixel row PXR2 and the eighth pixel column PXC8 can be connected to the same second sensing pixel circuit SPC2; and the third organic photodiode OPD3 and the fourth organic photodiode OPD4 and the second sensing pixel circuit SPC2 can form a second light sensing pixel LSPX2. Further, a fifth organic photodiode OPD5 located in the third pixel row PXR3 and the second pixel column PXC2 can be connected to a third sensing pixel circuit SPC3 located in the third pixel row PXR3 and the third pixel column PXC3; a sixth organic photodiode OPD6 located in the fourth pixel row PXR4 and the fourth pixel column PXC4 can be connected to the same third sensing pixel circuit SPC3; and the fifth organic photodiode OPD5 and the sixth organic photodiode OPD6 and the third sensing pixel circuit SPC3 can form a third light sensing pixel LSPX3. Further, a seventh organic photodiode OPD7 located in the third pixel row PXR3 and the sixth pixel column PXC6 can be connected to a fourth sensing pixel circuit SPC4 located in the third pixel row PXR3 and the seventh pixel column PXC7; an eighth organic photodiode OPD8 located in the fourth pixel row PXR4 and the eighth pixel column PXC8 can be connected to the same fourth sensing pixel circuit SPC4; and the seventh organic photodiode OPD7 and the eighth organic photodiode OPD8 and the fourth sensing pixel circuit SPC4 can form a fourth light sensing pixel LSPX4.

[0094] As Figure 12As shown in the display panel 450 in which each of the organic photodiodes OPD1' and OPD2' is connected to a different sensing pixel circuit SPC1' and SPC2', the first organic photodiode OPD1' located in the first pixel row can not have an anode extension or have an anode extension with a relatively short length, but the second organic photodiode OPD2' located in the second pixel row can have an anode extension AE with a relatively long length. Thus, in the display panel 450 in which each of the organic photodiodes OPD1' and OPD2' is connected to a different sensing pixel circuit SPC1' and SPC2', the organic photodiodes OPD1' and OPD2' can have anode extensions AE with different lengths. However, in the display panel 400 according to some embodiments, since the first organic photodiode OPD1 and the second organic photodiode OPD2 located in the second pixel column PXC2 and the fourth pixel column PXC4, respectively, are connected to the same first sensing pixel circuit SPC1 arranged in the third pixel column PXC3 between the second pixel column PXC2 and the fourth pixel column PXC4, the length LI of the anode extension AE1 of the first organic photodiode OPD1 to the first sensing pixel circuit SPC1 can be substantially the same as the length L2 of the anode extension AE2 of the second organic photodiode OPD2 to the first sensing pixel circuit SPC1. Thus, in the display panel 400 according to some embodiments, since the anode extensions AE1 and AE2 of the two organic photodiodes OPD1 and OPD2 connected to one sensing pixel circuit SPC1 have the same lengths LI and L2 to the one sensing pixel circuit SPC1, the light sensing accuracy can be improved (e.g., increased). Further, in the display panel 400 according to some embodiments, since the two organic photodiodes OPD1 and OPD2 are driven by a single sensing pixel circuit SPC1, the resolution of the display panel 400 can be improved (e.g., increased).

[0095] Referring again to Figure 11In the display panel 400, the plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4 connected to the plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8 arranged in the four consecutive pixel rows PXR1, PXR2, PXR3, and PXR4 can be connected to two of the four scan lines SL1, SL2, SL3, and SL4 arranged in the four consecutive pixel rows PXR1, PXR2, PXR3, and PXR4. For example, the first sensing pixel circuit SPC1 and the second sensing pixel circuit SPC2 can be connected to the first scan line SL1, the third sensing pixel circuit SPC3 and the fourth sensing pixel circuit SPC4 can be connected to the third scan line SL3, and the second scan line SL2 and the fourth scan line SL4 can not be connected to the sensing pixel circuits. Further, the plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4 connected to the plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8 arranged in the four pixel columns (or the second pixel column PXC2, the fourth pixel column PXC4, the sixth pixel column PXC6, and the eighth pixel column PXC8) can be connected to two readout lines RL1 and RL2. For example, the first sensing pixel circuit SPC1 and the third sensing pixel circuit SPC3 can be connected to the first readout line RL1, and the second sensing pixel circuit SPC2 and the fourth sensing pixel circuit SPC4 can be connected to the second readout line RL2. In some embodiments, the first readout line RL1 and the second readout line RL2 of the display panel 400 can be connected to two sensing channels of the readout circuit 950 shown in FIG. 9, respectively. Figure 19 the readout circuit 950 shown in FIG. 9.

[0096] As described above, in the display panel 400 according to some embodiments, two organic photodiodes can be connected to one sensing pixel circuit. Therefore, the anode extension of the two organic photodiodes can have substantially the same length to the sensing pixel circuit, the resolution of the display panel 400 can be improved (e.g., increased), and the light sensing accuracy can be improved (e.g., increased).

[0097] Figure 13 is a diagram illustrating a display panel according to some embodiments of the present disclosure. Figure 14 is a timing diagram for describing the operation of the display panel of Figure 13 FIG. 9 according to some embodiments of the present disclosure.

[0098] Referring to Figure 13According to some embodiments, the display panel 500 can include a plurality of light-emitting pixels RPX, GPX, and BPX, a plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8, a plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4, and a multiplexer 550. In addition to the display panel 500 also can include the multiplexer 550, Figure 13 The display panel 500 can have substantially the same configuration as the display panel 400 of Figure 11

[0099] The multiplexer 550 can selectively connect the first readout line RL1 or the second readout line RL2 to the sensing channel CH of the readout circuit 950 shown in Figure 19 In some embodiments, the multiplexer 550 can connect the first readout line RL1 to the sensing channel CH in response to the first multiplexing signal MUX1 being at an active level, and can connect the second readout line RL2 to the sensing channel CH in response to the second multiplexing signal MUX2 being at an active level.

[0100] Referring to Figure 13 and Figure 14 In the first frame period FP1 to the fourth frame period FP4, the first transfer signal TG1 can be at an active level (e.g., high level), and a light sensing operation using the first organic photodiode OPD1, the third organic photodiode OPD3, the fifth organic photodiode OPD5, and the seventh organic photodiode OPD7 can be performed. In the first frame period FP1, the anode voltages of the first organic photodiode OPD1, the third organic photodiode OPD3, the fifth organic photodiode OPD5, and the seventh organic photodiode OPD7 can be reset to a reset voltage. In one or more second frame periods FP2, the anode voltages of the first organic photodiode OPD1, the third organic photodiode OPD3, the fifth organic photodiode OPD5, and the seventh organic photodiode OPD7 can change according to light intensity. In the third frame period FP3, the first multiplexing signal MUX1 is at an active level (e.g., high level), the multiplexer 550 can connect the first readout line RL1 to the sensing channel CH, and Figure 19 the sensing channel CH of the readout circuit 950 shown in Figure 19 ​The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert sensing currents for the third organic photodiode OPD3 and the seventh organic photodiode OPD7 into digital sensing signals DSS.

[0101] Further, in the fifth frame period FP5 to the eighth frame period FP8, the second transfer signal TG2 is at the active level, and the light sensing operation using the second organic photodiode OPD2, the fourth organic photodiode OPD4, the sixth organic photodiode OPD6, and the eighth organic photodiode OPD8 can be performed. In the fifth frame period FP5, the anode voltages of the second organic photodiode OPD2, the fourth organic photodiode OPD4, the sixth organic photodiode OPD6, and the eighth organic photodiode OPD8 can be reset to the reset voltage. In one or more sixth frame periods FP6, the anode voltages of the second organic photodiode OPD2, the fourth organic photodiode OPD4, the sixth organic photodiode OPD6, and the eighth organic photodiode OPD8 can change according to the light intensity. In the seventh frame period FP7, the first multiplexing signal MUX1 can be at the active level, the multiplexer 550 can connect the first readout line RL1 to the sensing channel CH, and Figure 19 The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert sensing currents for the second organic photodiode OPD2 and the sixth organic photodiode OPD6 into digital sensing signals DSS. Further, in the eighth frame period FP8, the second multiplexing signal MUX2 can be at the active level, the multiplexer 550 can connect the second readout line RL2 to the sensing channel CH, and Figure 19 The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert sensing currents for the fourth organic photodiode OPD4 and the eighth organic photodiode OPD8 into digital sensing signals DSS.

[0102] Figure 15 FIG. 10 is a diagram illustrating a display panel according to some embodiments of the present disclosure.

[0103] Referring to Figure 15 According to some embodiments, the display panel 600 can include a plurality of light emitting pixels RPX, GPX, and BPX, a plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8, and a plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4.

[0104] In Figure 15In the display panel 600, two organic light diodes arranged in the same pixel row can be connected to one sensing pixel circuit. For example, in the first pixel row PXR1, the first organic light diode OPD1 located in the second pixel column PXC2 and the second organic light diode OPD2 located in the sixth pixel column PXC6 can be connected to the first sensing pixel circuit SPC1, and the first and second organic light diodes OPD1 and OPD2 and the first sensing pixel circuit SPC1 can form the first light sensing pixel LSPX1. Further, in the second pixel row PXR2, the third organic light diode OPD3 located in the fourth pixel column PXC4 and the fourth organic light diode OPD4 located in the eighth pixel column PXC8 can be connected to the second sensing pixel circuit SPC2, and the third and fourth organic light diodes OPD3 and OPD4 and the second sensing pixel circuit SPC2 can form the second light sensing pixel LSPX2. Further, in the third pixel row PXR3, the fifth organic light diode OPD5 located in the second pixel column PXC2 and the sixth organic light diode OPD6 located in the sixth pixel column PXC6 can be connected to the third sensing pixel circuit SPC3, and the fifth and sixth organic light diodes OPD5 and OPD6 and the third sensing pixel circuit SPC3 can form the third light sensing pixel LSPX3. Further, in the fourth pixel row PXR4, the seventh organic light diode OPD7 located in the fourth pixel column PXC4 and the eighth organic light diode OPD8 located in the eighth pixel column PXC8 can be connected to the fourth sensing pixel circuit SPC4, and the seventh and eighth organic light diodes OPD7 and OPD8 and the fourth sensing pixel circuit SPC4 can form the fourth light sensing pixel LSPX4.

[0105] Further, in the display panel 600, the plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4 connected to the plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8 arranged in the four consecutive pixel rows PXR1, PXR2, PXR3, and PXR4 can be connected to the four scan lines SL1, SL2, SL3, and SL4 arranged in the four consecutive pixel rows PXR1, PXR2, PXR3, and PXR4. For example, the first sensing pixel circuit SPC1 can be connected to the first scan line SL1, the second sensing pixel circuit SPC2 can be connected to the second scan line SL2, the third sensing pixel circuit SPC3 can be connected to the third scan line SL3, and the fourth sensing pixel circuit SPC4 can be connected to the fourth scan line SL4. Further, the plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4 connected to the plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8 arranged in the four pixel columns (or the second pixel column PXC2, the fourth pixel column PXC4, the sixth pixel column PXC6, and the eighth pixel column PXC8) can be connected to one readout line RL.

[0106] Figure 16 FIG. 1 is a diagram illustrating a display panel according to some embodiments of the present disclosure.

[0107] Referring to Figure 16 , the display panel 700 according to some embodiments can include a plurality of light emitting pixels RPX, GPX, and BPX, a plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8, and a plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4.

[0108] In Figure 16In the display panel 700, two organic light diodes arranged in the same pixel column can be connected to one sensing pixel circuit. For example, in the second pixel column PXC2, the first organic light diode OPD1 located in the first pixel row PXR1 and the second organic light diode OPD2 located in the third pixel row PXR3 can be connected to the first sensing pixel circuit SPC1, and the first and second organic light diodes OPD1 and OPD2 and the first sensing pixel circuit SPC1 can form the first light sensing pixel LSPX1. Further, in the fourth pixel column PXC4, the third organic light diode OPD3 located in the second pixel row PXR2 and the fourth organic light diode OPD4 located in the fourth pixel row PXR4 can be connected to the second sensing pixel circuit SPC2, and the third and fourth organic light diodes OPD3 and OPD4 and the second sensing pixel circuit SPC2 can form the second light sensing pixel LSPX2. Further, in the sixth pixel column PXC6, the fifth organic light diode OPD5 located in the first pixel row PXR1 and the sixth organic light diode OPD6 located in the third pixel row PXR3 can be connected to the third sensing pixel circuit SPC3, and the fifth and sixth organic light diodes OPD5 and OPD6 and the third sensing pixel circuit SPC3 can form the third light sensing pixel LSPX3. Further, in the eighth pixel column PXC8, the seventh organic light diode OPD7 located in the second pixel row PXR2 and the eighth organic light diode OPD8 located in the fourth pixel row PXR4 can be connected to the fourth sensing pixel circuit SPC4, and the seventh and eighth organic light diodes OPD7 and OPD8 and the fourth sensing pixel circuit SPC4 can form the fourth light sensing pixel LSPX4.

[0109] Further, in the display panel 700, the plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4 connected to the plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8 arranged in the four consecutive pixel rows PXR1, PXR2, PXR3, and PXR4 can be connected to one of the four scan lines SL1, SL2, SL3, and SL4 arranged in the four consecutive pixel rows PXR1, PXR2, PXR3, and PXR4. For example, the first sensing pixel circuit SPC1, the second sensing pixel circuit SPC2, the third sensing pixel circuit SPC3, and the fourth sensing pixel circuit SPC4 can be connected to the second scan line SL2, and the first scan line SL1, the third scan line SL3, and the fourth scan line SL4 can not be connected to the sensing pixel circuits. Further, the plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4 connected to the plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8 arranged in the four pixel columns (or the second pixel column PXC2, the fourth pixel column PXC4, the sixth pixel column PXC6, and the eighth pixel column PXC8) can be connected to the four readout lines RL1, RL2, RL3, and RL4. For example, the first sensing pixel circuit SPC1 can be connected to the first readout line RL1, the second sensing pixel circuit SPC2 can be connected to the second readout line RL2, the third sensing pixel circuit SPC3 can be connected to the third readout line RL3, and the fourth sensing pixel circuit SPC4 can be connected to the fourth readout line RL4. In some embodiments, the first readout line RL1, the second readout line RL2, the third readout line RL3, and the fourth readout line RL4 of the display panel 700 can be connected to the four sensing channels of the readout circuit 950 shown in FIG. 9, respectively. Figure 19 the four sensing channels of the readout circuit 950 shown in FIG. 9.

[0110] Figure 17 is a diagram illustrating a display panel according to some embodiments of the present disclosure; and Figure 18 is a timing diagram for describing the operation of the display panel of Figure 17

[0111] Referring to Figure 17 , the display panel 800 according to some embodiments can include the plurality of light-emitting pixels RPX, GPX, and BPX, the plurality of organic photodiodes OPD1, OPD2, OPD3, OPD4, OPD5, OPD6, OPD7, and OPD8, the plurality of sensing pixel circuits SPC1, SPC2, SPC3, and SPC4, and the multiplexer 850. Except that the display panel 800 can further include the multiplexer 850, the display panel 800 of Figure 17 may be the same as​Figure 16 The display panel 700 has substantially the same configuration.

[0112] The multiplexer 850 can selectively connect the first readout line RL1, the second readout line RL2, the third readout line RL3, or the fourth readout line RL4 to the sensing channel CH of the readout circuit 950 in response to the first multiplexing signal MUX1, the second multiplexing signal MUX2, the third multiplexing signal MUX3, and the fourth multiplexing signal MUX4. Figure 19 In some embodiments, the multiplexer 850 can connect the first readout line RL1 to the sensing channel CH in response to the first multiplexing signal MUX1 being at an active level, can connect the second readout line RL2 to the sensing channel CH in response to the second multiplexing signal MUX2 being at an active level, can connect the third readout line RL3 to the sensing channel CH in response to the third multiplexing signal MUX3 being at an active level, and can connect the fourth readout line RL4 to the sensing channel CH in response to the fourth multiplexing signal MUX4 being at an active level.

[0113] Referring to Figure 17 and Figure 18 In the first frame period FP1 to the sixth frame period FP6, the first transfer signal TG1 can be at an active level (e.g., high level), and a light sensing operation using the first organic photodiode OPD1, the third organic photodiode OPD3, the fifth organic photodiode OPD5, and the seventh organic photodiode OPD7 can be performed. In the first frame period FP1, the anode voltages of the first organic photodiode OPD1, the third organic photodiode OPD3, the fifth organic photodiode OPD5, and the seventh organic photodiode OPD7 can be reset to a reset voltage. In one or more second frame periods FP2, the anode voltages of the first organic photodiode OPD1, the third organic photodiode OPD3, the fifth organic photodiode OPD5, and the seventh organic photodiode OPD7 can change according to light intensity. In the third frame period FP3, the first multiplexing signal MUX1 is at an active level (e.g., high level), the multiplexer 850 can connect the first readout line RL1 to the sensing channel CH, and Figure 19 the sensing channel CH of the readout circuit 950 shown in FIG. 9A can convert a sensing current for the first organic photodiode OPD1 into a digital sensing signal DSS. Further, in the fourth frame period FP4, the second multiplexing signal MUX2 can be at an active level, the multiplexer 850 can connect the second readout line RL2 to the sensing channel CH, and Figure 19The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert the sensing current for the third organic photodiode OPD3 into a digital sensing signal DSS. In the fifth frame period FP5, the third multiplexing signal MUX3 can be at an active level, the multiplexer 850 can connect the third readout line RL3 to the sensing channel CH, and Figure 19 The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert the sensing current for the third organic photodiode OPD3 into a digital sensing signal DSS. In the fifth frame period FP5, the third multiplexing signal MUX3 can be at an active level, the multiplexer 850 can connect the third readout line RL3 to the sensing channel CH, and Figure 19 The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert the sensing current for the third organic photodiode OPD3 into a digital sensing signal DSS. In the fifth frame period FP5, the third multiplexing signal MUX3 can be at an active level, the multiplexer 850 can connect the third readout line RL3 to the sensing channel CH, and

[0114] In addition, in the seventh frame period FP7 to the twelfth frame period FP12, the second transfer signal TG2 can be at an active level, and the light sensing operation using the second organic photodiode OPD2, the fourth organic photodiode OPD4, the sixth organic photodiode OPD6, and the eighth organic photodiode OPD8 can be performed. In the seventh frame period FP7, the anode voltages of the second organic photodiode OPD2, the fourth organic photodiode OPD4, the sixth organic photodiode OPD6, and the eighth organic photodiode OPD8 can be reset to the reset voltage. In one or more eighth frame periods FP8, the anode voltages of the second organic photodiode OPD2, the fourth organic photodiode OPD4, the sixth organic photodiode OPD6, and the eighth organic photodiode OPD8 can change according to the light intensity. In the ninth frame period FP9, the first multiplexing signal MUX1 can be at an active level, the multiplexer 850 can connect the first readout line RL1 to the sensing channel CH, and Figure 19 The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert the sensing current for the third organic photodiode OPD3 into a digital sensing signal DSS. In the fifth frame period FP5, the third multiplexing signal MUX3 can be at an active level, the multiplexer 850 can connect the third readout line RL3 to the sensing channel CH, and Figure 19 The sensing channel CH of the readout circuit 950 shown in FIG. 9 can convert the sensing current for the third organic photodiode OPD3 into a digital sensing signal DSS. In the fifth frame period FP5, the third multiplexing signal MUX3 can be at an active level, the multiplexer 850 can connect the third readout line RL3 to the sensing channel CH, and Figure 19The sensing channel CH of the readout circuit 950 shown in FIG. 10 can convert the sensing current for the sixth organic photodiode OPD6 into a digital sensing signal DSS. Further, in the twelfth frame period FP12, the fourth multiplexing signal MUX4 can be at an active level, the multiplexer 850 can connect the fourth readout line RL4 to the sensing channel CH, and Figure 19 The sensing channel CH of the readout circuit 950 shown in FIG. 10 can convert the sensing current for the sixth organic photodiode OPD6 into a digital sensing signal DSS. Further, in the twelfth frame period FP12, the fourth multiplexing signal MUX4 can be at an active level, the multiplexer 850 can connect the fourth readout line RL4 to the sensing channel CH, and

[0115] Figure 19 is a block diagram illustrating a display apparatus according to some embodiments of the present disclosure.

[0116] Referring to Figure 19 The display apparatus 900 according to some embodiments can include a display panel 910 including a plurality of light-emitting pixels RPX, GPX, and BPX and a plurality of light-sensing pixels LSPX, a scan driver 920 providing a scan signal SS to the plurality of light-emitting pixels RPX, GPX, and BPX and the plurality of light-sensing pixels LSPX, an emission driver 930 providing an emission signal EM to the plurality of light-emitting pixels RPX, GPX, and BPX, a data driver 940 providing a data signal DS to the plurality of light-emitting pixels RPX, GPX, and BPX, a readout circuit 950 connected to the plurality of light-sensing pixels LSPX through a plurality of readout lines RL, and a controller 960 controlling operations of the display apparatus 900.

[0117] The display panel 910 can include a plurality of light-emitting pixels RPX, GPX, and BPX and a plurality of light-sensing pixels LSPX. Each of the light-emitting pixels RPX, GPX, and BPX can include a light-emitting element and can emit light using the light-emitting element. For example, the light-emitting element can be an organic light-emitting diode (“OLED”), a nano light-emitting diode (“nano-LED”), a quantum dot (“QD”) light-emitting diode, a micro light-emitting diode, an inorganic light-emitting diode, or any other suitable light-emitting element. Each of the light-sensing pixels LSPX can include two organic photodiodes OPD1 and OPD2 and one sensing pixel circuit SPC. The two organic photodiodes OPD1 and OPD2 can be connected to the sensing pixel circuit SPC. The sensing pixel circuit SPC can perform a light-sensing operation using the first organic photodiode OPD1 in response to a first transfer signal TG1 and can perform a light-sensing operation using the second organic photodiode OPD2 in response to a second transfer signal TG2. In some embodiments, a length of an anode extension of the first organic photodiode OPD1 to the sensing pixel circuit SPC can be substantially the same as a length of an anode extension of the second organic photodiode OPD2 to the sensing pixel circuit SPC. According to some embodiments, the light-sensing pixel LSPX can be a Figure 1100 light-sensing pixels Figure 9 200 light-sensing pixels or Figure 10 The light-sensing pixel 300. Furthermore, according to some embodiments, the display panel 910 may be... Figure 11 Display panel 400, Figure 13 500 display panel Figure 15 Display panel 600, Figure 16 Display panel 700 or Figure 17 The display panel is 800.

[0118] The scan driver 920 can generate a scan signal SS based on a scan control signal SCTRL received from the controller 960, and can sequentially provide the scan signal SS to a plurality of light-emitting pixels RPX, GPX, and BPX and a plurality of light-sensing pixels LSPX on a pixel-by-pixel basis. In some embodiments, the scan control signal SCTRL may include, but is not limited to, a scan start signal and a scan clock signal. Furthermore, in some embodiments, the scan driver 920 may be integrated or formed in the display panel 910. In some other embodiments, the scan driver 920 may be implemented using one or more integrated circuits.

[0119] The transmit driver 930 can generate a transmit signal EM based on a transmit control signal ECTRL received from the controller 960, and can sequentially provide the transmit signal EM to a plurality of luminous pixels RPX, GPX, and BPX on a pixel-by-pixel basis. In some embodiments, the transmit control signal ECTRL may include, but is not limited to, a transmit start signal and a transmit clock signal. In some embodiments, the transmit driver 930 may be integrated or formed in the display panel 910. In some other embodiments, the transmit driver 930 may be implemented using one or more integrated circuits.

[0120] The data driver 940 can generate a data signal DS based on the data control signal DCTRL received from the controller 960 and the output image data ODAT, and can provide the data signal DS to multiple luminous pixels RPX, GPX, and BPX. In some embodiments, the data control signal DCTRL may include, but is not limited to, an output data enable signal, a level start signal, and a load signal. In some embodiments, the data driver 940 and the controller 960 can be implemented as a single integrated circuit, and this single integrated circuit may be referred to as a timing controller embedded data driver (“TED”) integrated circuit. In some other embodiments, the data driver 940 and the controller 960 can be implemented as separate integrated circuits.

[0121] The readout circuit 950 can receive sensing currents of the plurality of light sensing pixels LSPX through a plurality of readout lines RL, can generate digital sensing signals DSS based on the sensing currents, and can provide the digital sensing signals DSS to the controller 960. Further, the readout circuit 950 can simultaneously or substantially simultaneously apply a reset signal GR to all of the light sensing pixels LSPX of the display panel 910. Further, the readout circuit 950 can apply a first transfer signal TG1 to the plurality of light sensing pixels LSPX to perform a light sensing operation using the first organic photodiode OPD1, or can apply a second transfer signal TG2 to the plurality of light sensing pixels LSPX to perform a light sensing operation using the second organic photodiode OPD2. In some embodiments, the readout circuit 950 can be implemented as an integrated circuit, and the integrated circuit can be referred to as a readout integrated circuit ("ROIC"). In some other embodiments, the readout circuit 950 can be included in the data driver 940.

[0122] The controller 960 (e.g., a timing controller ("TCON")) can receive input image data IDAT and control signals CTRL from an external host processor (e.g., a graphics processing unit ("GPU"), an application processor ("AP"), or a graphic card). In some embodiments, the input image data IDAT can be RGB image data including red image data, green image data, and blue image data. In some embodiments, the control signals CTRL can include, but are not limited to, a vertical synchronization signal, a horizontal synchronization signal, an input data enable signal, a main clock signal, etc. The controller 960 can generate output image data ODAT, data control signals DCTRL, scan control signals SCTRL, and emission control signals ECTRL based on the input image data IDAT and the control signals CTRL. The controller 960 can control the operation of the scan driver 920 by providing the scan control signals SCTRL to the scan driver 920, can control the operation of the emission driver 930 by providing the emission control signals ECTRL to the emission driver 930, and can control the operation of the data driver 940 by providing the output image data ODAT and the data control signals DCTRL to the data driver 940.

[0123] In the display device 900 according to some embodiments, two organic photodiodes OPD1 and OPD2 can be connected to one sensing pixel circuit SPC. Accordingly, the anode extensions of the two organic photodiodes OPD1 and OPD2 can have the same length to the sensing pixel circuit SPC, the resolution of the display panel 910 can be improved, and the light sensing accuracy can be improved.

[0124] Figure 20 is a block diagram illustrating an electronic device including a display device according to some embodiments of the present disclosure.

[0125] Referring to Figure 20 The electronic device 1100 can include a processor 1110, a memory device 1120, a storage device 1130, an input / output (“I / O”) device 1140, a power supply 1150, and a display device 1160. The electronic device 1100 can also include a plurality of ports for communication with a video card, a sound card, a memory card, a universal serial bus (“USB”) device, and other electronic devices, etc.

[0126] The processor 1110 can perform various computing functions or tasks. The processor 1110 can be an application processor (“AP”), a microprocessor, a central processing unit (“CPU”), etc. The processor 1110 can be coupled to other components via an address bus, a control bus, a data bus, etc. Also, in some embodiments, the processor 1110 can also be coupled to an expansion bus such as a peripheral component interconnect (“PCI”) bus.

[0127] The memory device 1120 can store data for operation of the electronic device 1100. For example, the memory device 1120 can include at least one non-volatile memory device such as an erasable programmable read-only memory (“EPROM”) device, an electrically erasable programmable read-only memory (“EEPROM”) device, a flash memory device, a phase-change random access memory (“PRAM”) device, a resistive random access memory (“RRAM”) device, a nano floating gate memory (“NFGM”) device, a polymer random access memory (“PoRAM”) device, a magnetic random access memory (“MRAM”) device, a ferroelectric random access memory (“FRAM”) device, etc., and / or at least one volatile memory device such as a dynamic random access memory (“DRAM”) device, a static random access memory (“SRAM”) device, a mobile dynamic random access memory (“mobile DRAM”) device, etc.

[0128] The storage device 1130 can be a solid state drive (“SSD”) device, a hard disk drive (“HDD”) device, a compact disc read-only memory (“CD-ROM”) device, etc. The I / O device 1140 can be an input device such as a keyboard, a keypad, a mouse, a touchscreen, etc., and an output device such as a printer, a speaker, etc. The power supply 1150 can supply power for operation of the electronic device 1100. The display device 1160 can be coupled to other components through a bus or other communication link.

[0129] In the display device 1160, two organic photodiodes can be connected to one sensing pixel circuit. Also, the anode extension of the two organic photodiodes can have substantially the same length to the sensing pixel circuit. Accordingly, the resolution of the display panel can be improved, and the light sensing accuracy can be improved.

[0130] The inventive concept can be applied to any electronic device 1100 including a display device 1160. For example, the inventive concept can be applied to a mobile phone, a smart phone, a head-mounted display ("HMD"), a virtual reality ("VR") device, a television ("TV") (e.g., a digital TV, a three-dimensional ("3D") TV, etc.), a wearable electronic device, a personal computer ("PC") (e.g., a laptop computer, a tablet computer, etc.), a home appliance, a personal digital assistant ("PDA"), an electronic notebook, an electronic book, a portable multimedia player ("PMP"), a digital camera, a music player, a portable game console, a navigation device, an ultra-mobile PC ("UMPC"), a billboard, an Internet of Things ("IoT") device, a smart watch, a watch phone, etc.

[0131] The above description is of the embodiments and will not be interpreted to limit them. Although several embodiments have been described, it will be readily apparent to those skilled in the art that many modifications can be made thereto without departing from the novel teachings and advantages of the inventive concept. Accordingly, all such modifications are intended to be included within the scope of the inventive concept as defined by the appended claims and their equivalents. It is therefore understood that the above description is illustrative and not restrictive, and that modifications will become apparent to those skilled in the art upon reading of this patent, with the scope of the inventive concept being indicated by the following claims and their equivalents.

Claims

1. A light-sensing pixel for a display device, wherein, The light-sensing pixels include: First organic photodiode; The second organic photodiode; and The sensing pixel circuit is configured to perform a light sensing operation using the first organic photodiode in response to a first transmission signal, and to perform a light sensing operation using the second organic photodiode in response to a second transmission signal.

2. The photosensitive pixel according to claim 1, wherein, The length of the anode extension of the first organic photodiode to the sensing pixel circuit is equal to the length of the anode extension of the second organic photodiode to the sensing pixel circuit.

3. The photosensitive pixel according to claim 1, wherein, The first organic photodiode and the second organic photodiode are arranged in different pixel rows and different pixel columns in the display panel of the display device.

4. The photosensitive pixel according to claim 1, wherein, The first organic photodiode and the second organic photodiode are arranged in the same pixel row and different pixel column in the display panel of the display device.

5. The photosensitive pixel according to claim 1, wherein, The first organic photodiode and the second organic photodiode are arranged in different pixel rows and the same pixel columns in the display panel of the display device.

6. The photosensitive pixel according to claim 1, wherein, The sensing pixel circuit includes: The first transistor is configured to apply a reset voltage to the gate node in response to a reset signal; The second transistor is configured to generate a sensing current based on the voltage of the gate node; A third transistor is configured to transmit the sensed current to the readout line in response to a scan signal; A fourth transistor, configured to connect the anode of the first organic photodiode to the gate node in response to the first transmission signal; and The fifth transistor is configured to connect the anode of the second organic photodiode to the gate node in response to the second transmission signal.

7. The photosensitive pixel according to claim 6, wherein, The first transistor includes a gate configured to receive the reset signal, a first terminal connected to a line configured to transmit the reset voltage, and a second terminal connected to the gate node. The second transistor includes a gate connected to the gate node, a first terminal connected to a line configured to transmit a reference voltage, and a second terminal. The third transistor includes a gate configured to receive the scan signal, a first terminal connected to the second terminal of the second transistor, and a second terminal connected to the readout line.

8. The photosensitive pixel according to claim 6, wherein, The fourth transistor includes a gate configured to receive the first transmitted signal, a first terminal connected to the gate node, and a second terminal connected to the anode of the first organic photodiode. The fifth transistor includes a gate configured to receive the second transmission signal, a first terminal connected to the gate node, and a second terminal connected to the anode of the second organic photodiode.

9. The photosensitive pixel according to claim 6, wherein, The second transistor and the third transistor are P-type metal-oxide-semiconductor transistors, and The first transistor, the fourth transistor, and the fifth transistor are N-type metal-oxide-semiconductor transistors.

10. The light-sensing pixel according to claim 6, wherein, The first to the fifth transistors are NMOS transistors.

11. The photosensitive pixel according to claim 6, wherein, The first to the fifth transistors are PMOS transistors.

12. The photosensitive pixel according to claim 6, wherein, The voltage at the anode of the first organic photodiode is reset to the reset voltage during the first frame period. In this embodiment, the voltage of the anode of the first organic photodiode changes according to the light intensity during one or more second frame periods. The sensing current, corresponding to the voltage at the anode of the first organic photodiode, is output to the readout line during the third frame period. In this process, the voltage of the anode of the second organic photodiode is reset to the reset voltage during the fourth frame period. The voltage at the anode of the second organic photodiode changes according to the light intensity during one or more fifth frame periods. The sensed current, corresponding to the voltage at the anode of the second organic photodiode, is output to the readout line during the sixth frame period. Wherein, the first transmission signal is at an active level during the first frame period, the one or more second frame periods, and the third frame period, and The second transmission signal is at an active level during the fourth frame period, the one or more fifth frame periods, and the sixth frame period.

13. A display panel, wherein, The display panel includes: Multiple luminous pixels; Multiple organic photodiodes; and Multiple sensing pixel circuits, In this configuration, every four light-emitting pixels are arranged to form one of the plurality of organic photodiodes, and Two of the plurality of organic photodiodes are connected to one of the plurality of sensing pixel circuits.

14. The display panel according to claim 13, wherein, The anode extensions of the two organic photodiodes connected to the one sensing pixel circuit have the same length to the one sensing pixel circuit.

15. The display panel according to claim 13, wherein, The plurality of organic photodiodes include: A first organic photodiode is arranged in a first pixel row and a second pixel column; and The second organic photodiode is arranged in the second pixel row and the fourth pixel column, and The first organic photodiode and the second organic photodiode are connected to the same sensing pixel circuit in the plurality of sensing pixel circuits.

16. The display panel according to claim 15, wherein, The plurality of sensing pixel circuits connected to the plurality of organic photodiodes arranged in the four pixel rows are connected to two of the four scan lines arranged in the four pixel rows.

17. A display device, wherein, The display device includes: The display panel includes multiple light-emitting pixels, multiple organic light-emitting diodes, and multiple sensing pixel circuits; A data driver configured to provide data signals to the plurality of light-emitting pixels; A scan driver, configured to provide scan signals to the plurality of light-emitting pixels and the plurality of sensing pixel circuits; and The readout circuit is connected to the plurality of sensing pixel circuits via multiple readout lines. In this configuration, every four light-emitting pixels are arranged to form one of the plurality of organic photodiodes, and Two of the plurality of organic photodiodes are connected to one of the plurality of sensing pixel circuits.

18. The display device according to claim 17, wherein, Each of the plurality of sensing pixel circuits includes: The first transistor is configured to apply a reset voltage to the gate node in response to a reset signal; The second transistor is configured to generate a sensing current based on the voltage of the gate node; A third transistor is configured to transmit the sensed current to the readout line in response to a scan signal; A fourth transistor is configured to connect the anode of a first organic photodiode of the plurality of organic photodiodes to the gate node in response to a first transmission signal; and The fifth transistor is configured to connect the anode of the second organic photodiode of the plurality of organic photodiodes to the gate node in response to the second transmission signal.

19. An electronic device, wherein, The electronic device includes the display device according to claim 17 or 18.

20. The electronic device according to claim 19, wherein, The electronic device is a smartphone, television, monitor, tablet computer, electric vehicle, mobile phone, tablet PC, mobile communication terminal, electronic notebook, e-book, portable multimedia player, navigation device, ultra-mobile PC, laptop computer, billboard, Internet of Things device, smartwatch, watch phone, or head-mounted display.

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