Electronic device

Abstract

An electronic device is provided. The electronic device includes: a memory; a drive controller; a light-emitting element; a first transistor including a first electrode, a second electrode, and a gate electrode for receiving a data signal; a second transistor connected between the first driving voltage line and a first electrode of the first transistor, and receiving a first emission signal; and a third transistor connected between the second electrode of the first transistor and the light emitting element, and receiving the second emission signal. The first transmission signal includes a compensation period and a transmission period, and the memory stores an instruction that, when executed by the drive controller, causes the drive controller to determine a compensation time of the compensation period according to the target luminance.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and all benefits derived from Korean Patent Application No. 10-2024-0018958, filed on February 7, 2024, the contents of which are incorporated herein by reference in their entirety. Technical Field

[0003] Embodiments of the present disclosure described herein relate to electronic devices. Background Art

[0004] An electronic device includes pixels connected to data lines and scan lines. Each of the pixels includes a light-emitting element and a pixel circuit for controlling the light-emitting element. The pixel circuit supplies a current corresponding to a data signal to the light-emitting element. In response to the current flowing through the light-emitting element, the pixel circuit generates light having a predetermined brightness. Summary of the Invention

[0005] Embodiments of the present disclosure provide an electronic device with improved display quality.

[0006] According to an embodiment, an electronic device includes: a memory; a drive controller; a light-emitting element; a first transistor including a first electrode, a second electrode, and a gate electrode for receiving a data signal; a second transistor connected between a first drive voltage line and the first electrode of the first transistor and receiving a first emission signal; and a third transistor connected between the second electrode of the first transistor and the light-emitting element and receiving a second emission signal. The first emission signal includes a compensation period and an emission period, and the memory stores instructions that, when executed by the drive controller, cause the drive controller to determine a compensation time of the compensation period based on target brightness.

[0007] In an embodiment, the first transmit signal may be at an active level for turning on the second transistor in each of the compensation period and the transmit period.

[0008] In an embodiment, when the target brightness has a first value, the compensation time of the compensation cycle may be the first time. When the target brightness has a second value, the compensation time of the compensation cycle may be the second time. The memory may store instructions that, when executed by the drive controller, cause the drive controller to set the first time to be longer than the second time when the first value is greater than the second value.

[0009] In an embodiment, the electronic device may further include: a fourth transistor connected between the light emitting element and an initialization voltage line receiving an initialization voltage.

[0010] In an embodiment, the memory may store instructions that, when executed by the driving controller, cause the driving controller to determine a voltage level of the initialization voltage according to characteristics of the light emitting element.

[0011] In an embodiment, each of the first transistor, the second transistor, and the third transistor may be an N-type transistor.

[0012] According to an embodiment, an electronic device includes: a memory; a display panel including a plurality of pixels, each of the plurality of pixels being connected to a plurality of scan lines, a first emission line, a second emission line, and a data line; a scan driver circuit outputting a plurality of scan signals to the plurality of scan lines; an emission driver circuit outputting a first emission signal and a second emission signal to the first emission line and the second emission line, respectively; and a drive controller controlling the emission driver circuit according to a target brightness. Each of the plurality of pixels includes: a light-emitting element; a first transistor including a first electrode, a second electrode, and a gate electrode for receiving a data signal from a data line; a second transistor connected between a first driving voltage line and the first electrode of the first transistor and receiving the first emission signal; and a third transistor connected between the second electrode of the first transistor and the light-emitting element and receiving the second emission signal. The first emission signal includes a compensation period and an emission period, and the memory stores instructions that, when executed by the drive controller, cause the drive controller to determine a compensation time of the compensation period according to the target brightness.

[0013] In an embodiment, the first transmit signal may be at an active level for turning on the second transistor in each of the compensation period and the transmit period.

[0014] In an embodiment, when the target brightness has a first value, the compensation time of the compensation cycle may be the first time. When the target brightness has a second value, the compensation time of the compensation cycle may be the second time. The memory may store instructions that, when executed by the drive controller, cause the drive controller to set the first time to be longer than the second time when the first value is greater than the second value.

[0015] In an embodiment, the plurality of pixels include first color pixels, second color pixels, and third color pixels.

[0016] In an embodiment, the electronic device may further include a voltage generator that generates a first initialization voltage provided to the first color pixel, a second initialization voltage provided to the second color pixel, and a third initialization voltage provided to the third color pixel. The memory may store instructions that, when executed by the drive controller, cause the drive controller to determine a voltage level of each of the first initialization voltage, the second initialization voltage, and the third initialization voltage based on a luminance deviation between the first color pixel, the second color pixel, and the third color pixel.

[0017] In an embodiment, the first color pixel may include a fourth transistor connected between the light emitting element and a first initialization voltage line receiving a first initialization voltage.

[0018] In an embodiment, the first color pixel may further include: a fifth transistor, which is connected between the data line and the gate electrode of the first transistor and includes a gate electrode connected to a first scan line among a plurality of scan lines; and a sixth transistor, which is connected between the reference voltage line and the gate electrode of the first transistor and includes a gate electrode connected to a second scan line among the plurality of scan lines.

[0019] In an embodiment, the first color pixel may further include: a capacitor including a first electrode and a second electrode, the first electrode connected to the gate electrode of the first transistor; and a seventh transistor connected between the second electrode of the capacitor and the second initialization voltage line.

[0020] In an embodiment, each of the first transistor, the second transistor, and the third transistor may be an N-type transistor.

[0021] According to an embodiment, an electronic device includes: a memory; a drive controller; a display panel including first, second, and third color pixels; and a voltage generator that generates a first initialization voltage to be provided to the first color pixels, a second initialization voltage to be provided to the second color pixels, and a third initialization voltage to be provided to the third color pixels. The memory stores instructions that, when executed by the drive controller, cause the drive controller to determine a voltage level of each of the first, second, and third initialization voltages based on a luminance deviation between the first, second, and third color pixels.

[0022] In an embodiment, the first color pixel may include: a light-emitting element that emits a first color light; a first transistor, the first transistor including a first electrode, a second electrode, and a gate electrode that receives a data signal; a second transistor, the second transistor being connected between a first driving voltage line and the first electrode of the first transistor and receiving a first emission signal; a third transistor, the third transistor being connected between the second electrode of the first transistor and the light-emitting element and receiving a second emission signal; and a fourth transistor, the fourth transistor being connected between the light-emitting element and an initialization voltage line that receives a first initialization voltage.

[0023] In an embodiment, the first emission signal may include a compensation period and an emission period, and the memory may store instructions that, when executed by the driving controller, cause the driving controller to determine a compensation time of the compensation period according to the target brightness.

[0024] In an embodiment, the first transmit signal may be at an active level for turning on the second transistor in each of the compensation period and the transmit period.

[0025] In an embodiment, when the target brightness has a first value, the compensation time of the compensation cycle may be the first time. When the target brightness has a second value, the compensation time of the compensation cycle may be the second time. When the first value is greater than the second value, the first time may be longer than the second time. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The above and other aspects and features of the present disclosure will become apparent by describing in detail embodiments of the present disclosure with reference to the attached drawings.

[0027] Figure 1 is a plan view of an electronic device according to an embodiment of the present disclosure.

[0028] Figure 2 is a block diagram of an electronic device according to an embodiment of the present disclosure.

[0029] Figure 3 is a circuit diagram of a pixel according to an embodiment of the present disclosure.

[0030] Figure 4 is a timing diagram showing the operation of a pixel.

[0031] Figure 5 is a diagram showing the relationship between the grayscale level of an image signal and the brightness according to the target brightness.

[0032] Figure 6 is a graph showing a transmission signal according to target brightness and ambient temperature.

[0033] Figure 7 is a graph showing changes in the first display quality according to target brightness.

[0034] Figure 8 is a graph showing changes in pixel luminance according to target luminance and ambient temperature.

[0035] Figure 9A and Figure 9B is a timing diagram showing the operation of a pixel.

[0036] Figure 10A is a graph showing voltage-current characteristics of a first transistor in a pixel when a compensation period has a first compensation time.

[0037] Figure 10B is a graph showing voltage-current characteristics of a first transistor in a pixel when the compensation period has a second compensation time.

[0038] Figure 11 is a graph showing changes in pixel luminance according to target luminance and ambient temperature.

[0039] Figure 12 is a diagram showing pixels arranged on a display panel.

[0040] Figure 13A and Figure 13B is a graph showing luminance deviations of first color pixels, second color pixels, and third color pixels.

[0041] Figure 14 is a graph showing a transmission signal according to target brightness and ambient temperature.

[0042] Figure 15A 、 Figure 15B and Figure 15C Luminance deviation and chromaticity deviation according to the compensation time of the compensation period, the first initialization voltage, the second initialization voltage, and the third initialization voltage are shown.

[0043] Figure 16 is a circuit diagram of a pixel according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0044] In the specification, the expression that a first component (or region, layer, part, etc.) is "on", "connected to" or "coupled to" a second component means that the first component is directly on, directly connected to or directly coupled to the second component, or means that a third component is interposed therebetween.

[0045] Like reference numerals refer to like components. In addition, in the drawings, the thickness, proportion and size of components are exaggerated in order to effectively describe the technical content. The term "and / or" includes one or more combinations of the related listed items.

[0046] Although the terms "first," "second," etc., may be used to describe various components, these components should not be limited by the terms. The terms are used only to distinguish one component from another. For example, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component, without departing from the scope and spirit of the present disclosure. The articles "a," "an," and "the" are singular in that they have a single referent, but the use of the singular in the specification should not exclude the presence of a plurality of one referents.

[0047] In addition, the terms "under," "beneath," "on," "above," etc. are used to describe the relationship between components illustrated in the drawings. The terms are relative and are described with reference to the directions indicated in the drawings.

[0048] It will be understood that the terms “include,” “comprise,” “have,” etc. specify the presence of features, numbers, steps, operations, elements or components described in the specification, but do not exclude the presence or additional possibilities of one or more other features, numbers, steps, operations, elements or components or combinations thereof.

[0049] Unless otherwise defined, all terms (including technical terms and scientific terms) used in this specification have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs. In addition, unless expressly defined herein, terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology and should not be interpreted in an idealized or overly formal sense.

[0050] Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings.

[0051] Figure 1 is a plan view of an electronic device DD according to an embodiment of the present disclosure.

[0052] refer to Figure 1, a portable terminal is illustrated as an example of an electronic device DD according to an embodiment of the present disclosure. The portable terminal may include a tablet personal computer, a smart phone, a personal digital assistant ("PDA"), a portable multimedia player ("PMP"), a game console, a wristwatch-type electronic device, etc. However, the present disclosure is not limited thereto. In addition to large electronic devices such as televisions or outdoor billboards, the present disclosure can also be used for small and medium-sized electronic devices such as personal computers, notebook computers, self-service terminals, car navigation units, and cameras. The above examples are provided only as embodiments, and it is obvious that the electronic device DD can be applied to any other electronic device without departing from the concept of the present disclosure.

[0053] like Figure 1 As shown in FIG, the display surface on which an image is displayed is parallel to a plane defined by the first direction DR1 and the second direction DR2. The electronic device DD includes a plurality of separate areas on the display surface. The display surface includes a display area DA in which an image is displayed and a non-display area NDA adjacent to the display area DA. The non-display area NDA may be referred to as a bezel area. For example, the display area DA may have a rectangular shape. The non-display area NDA surrounds the display area DA. In addition, although not shown, for example, the electronic device DD may include a partially bent shape.

[0054] Figure 2 is a block diagram of an electronic device DD according to an embodiment of the present disclosure.

[0055] refer to Figure 2 , the electronic device DD includes a display panel DP, a driving controller 100 , a data driving circuit 200 , a scan driving circuit 300 , an emission driving circuit 400 and a voltage generator 500 .

[0056] The drive controller 100 receives image signals RGB and a control signal CTRL. The drive controller 100 converts the image signals RGB into image data signals DS and outputs the image data signals DS. In response to the control signal CTRL, the drive controller 100 outputs a scan control signal SCS, a data control signal DCS, and an emission control signal ECS. In an embodiment, the control signal CTRL may include target brightness information. The drive controller 100 may output the emission control signal ECS based on the target brightness information included in the control signal CTRL.

[0057] Although Figure 2 Not shown, the electronic device DD may also include a memory inside or outside the driving controller 100, so that the instructions stored in the memory can enable the driving controller 100 to perform multiple functions when executed by the driving controller 100 (for example, determining the emission control signal ECS based on the target brightness information, and functions to be described later).

[0058] The data driving circuit 200 receives a data control signal DCS and an image data signal DS from the driving controller 100. The data driving circuit 200 converts the image data signal DS into a data signal and then outputs the data signal to a plurality of data lines DL1 to DLm to be described later, where m is an integer greater than 0.

[0059] The scan driving circuit 300 receives a scan control signal SCS from the driving controller 100. The scan driving circuit 300 may output scan signals to the scan lines GRL1 to GRLn, GIL1 to GILn, and GWL1 to GWLn in response to the scan control signal SCS, where n is an integer greater than 0.

[0060] The emission driving circuit 400 receives an emission control signal ECS from the driving controller 100. The scan driving circuit 300 may output emission signals to the emission lines EML1 to EMLn and EBL1 to EBLn in response to the emission control signal ECS.

[0061] The voltage generator 500 generates voltages to operate the display panel DP. In an embodiment, the voltage generator 500 may generate a first driving voltage ELVDD, a second driving voltage ELVSS, a first initialization voltage VINT_R, a second initialization voltage VINT_G, a third initialization voltage VINT_B, and a reference voltage VREF for operation of the display panel DP.

[0062] The display panel DP includes scan lines GRL1 to GRLn, GIL1 to GILn and GWL1 to GWLn, emission lines EML1 to EMLn and EBL1 to EBLn, data lines DL1 to DLm, and pixels PX.

[0063] The display panel DP includes an active area AA and an inactive area NAA. The active area AA can be connected to Figure 1 The active area NAA may correspond to the display area DA of the electronic device DD shown in FIG. 1 , and the non-display area NDA may correspond to the non-display area NDA.

[0064] In an embodiment, the pixel PX may be disposed in the active area AA of the display panel DP. The scan driver circuit 300 and the emission driver circuit 400 may be disposed in the inactive area NAA of the display panel DP. In an embodiment, the scan driver circuit 300 is disposed adjacent to a first side of the active area AA. The scan lines GRL1 to GRLn, GIL1 to GILn, and GWL1 to GWLn extend from the scan driver circuit 300 in a first direction DR1. The emission driver circuit 400 is disposed adjacent to a second side of the active area AA. The emission lines EML1 to EMLn and EBL1 to EBLn extend from the emission driver circuit 400 in a direction opposite to the first direction DR1.

[0065] The scan lines GRL1 to GRLn, GIL1 to GILn, and GWL1 to GWLn, and the emission lines EML1 to EMLn and EBL1 to EBLn are arranged to be spaced apart from each other in the second direction DR2. The data lines DL1 to DLm extend from the data driving circuit 200 in a direction opposite to the second direction DR2 and are arranged to be spaced apart from each other in the first direction DR1.

[0066] exist Figure 2 In the example shown in FIG, the scan driver circuit 300 and the emission driver circuit 400 are arranged to face each other with the pixel PX interposed therebetween, but the present disclosure is not limited thereto. For example, the scan driver circuit 300 and the emission driver circuit 400 may be placed adjacent to each other in the inactive area NAA of the display panel DP. In an embodiment, the scan driver circuit 300 and the emission driver circuit 400 may be implemented as a single circuit.

[0067] The plurality of pixels PX are electrically connected to the scan lines GRL1 to GRLn, GIL1 to GILn and GWL1 to GWLn, the emission lines EML1 to EMLn and EBL1 to EBLn, and the data lines DL1 to DLm. Each of the plurality of pixels PX may be electrically connected to three scan lines and two emission lines. For example, Figure 4 As shown in FIG, the first row of pixels PX can be connected to the scan lines GRL1, GIL1, and GWL1 and the emission lines EML1 and EBL1. In addition, the i-th row of pixels PX can be connected to the scan lines GRLi, GILi, and GWLi and the emission lines EMLi and EBLi, where i is an integer between 0 and n. In addition, the n-th row of pixels PX can be connected to the scan lines GRLn, GILn, and GWLn and the emission lines EMLn and EBLn.

[0068] Each of the plurality of pixels PX includes a light emitting element ED (see Figure 3 ) and a pixel circuit for controlling the emission of the light-emitting element ED. The pixel circuit may include one or more transistors and one or more capacitors. The scan drive circuit 300 and the emission drive circuit 400 may include transistors formed by the same process as the pixel circuit.

[0069] Figure 3 is a circuit diagram of a pixel PX according to an embodiment of the present disclosure. Figure 4 is a timing chart showing the operation of the pixel PX.

[0070] Figure 3 Illustration of connection to Figure 21 to DLm, the data lines DLj among the data lines DL1 to DLm, the scan lines GRLi, GILi and GWLi among the scan lines GRL1 to GRLn, GIL1 to GILn and GWL1 to GWLn, and the emission lines EMLi and EBLi among the emission lines EML1 to EMLn and EBL1 to EBLn, wherein j is an integer between 0 and m.

[0071] Figure 2 Each of the plurality of pixels PX shown in FIG may have Figure 3 The circuit configuration of the pixel PX shown in is the same circuit configuration.

[0072] refer to Figure 3 and Figure 4 According to an embodiment, a pixel PX includes first, second, third, fourth, fifth, and sixth transistors T1, T2, T3, T4, T5, and T6, a first capacitor Cst, a second capacitor Chold, and a light emitting element ED. In an embodiment, the light emitting element ED may be a light emitting diode.

[0073] In an embodiment, each of the first to sixth transistors T1 to T6 may be an N-type transistor using an oxide semiconductor as a semiconductor layer. However, the present disclosure is not limited thereto. For example, at least one of the first to sixth transistors T1 to T6 may be a P-type transistor having a low-temperature polysilicon ("LTPS") semiconductor layer. Figure 3 The pixel PX illustrated in FIG. 1 is merely an example, and the circuit configuration of the pixel PX may be modified and implemented.

[0074] The scanning lines GRLi, GILi and GWLi can transmit scanning signals GRi, GIi and GWi respectively. The emission lines EMLi and EBLi can transmit emission signals EMi and EBi respectively. The data line DLj transmits a data signal Dj. The data signal Dj can have the same value as that input to the electronic device DD (see Figure 1 ) The first driving voltage line VL1, the second driving voltage line VL2, the third driving voltage line VL3 and the fourth driving voltage line VL4 can respectively transmit the first driving voltage ELVDD, the second driving voltage ELVSS, the first initialization voltage VINT_R and the reference voltage VREF.

[0075] In an embodiment, Figure 3 The light emitting element ED included in the pixel PX shown in FIG emits the first color light, and thus the pixel PX receives the first initialization voltage VINT_R. When the light emitting element ED included in the pixel PX emits the second color light, the pixel PX may receive the second initialization voltage VINT_G (see FIG. Figure 2When the light emitting element ED included in the pixel PX emits the third color light, the pixel PX may receive the third initialization voltage VINT_B (see Figure 2 ).

[0076] The first transistor T1 includes a first electrode connected to the first driving voltage line VL1 via the fifth transistor T5, a second electrode electrically connected to the anode of the light emitting element ED via the sixth transistor T6, a gate electrode connected to one end of the first capacitor Cst, and a lower gate electrode connected to one end of the second capacitor Chold (at Figure 3 The first transistor T1 may receive a data signal Dj through the data line DLj according to a switching operation of the second transistor T2, and may supply a driving current to the light emitting element ED.

[0077] The first capacitor Cst includes a first electrode connected to the second electrode of the first transistor T1 and a second electrode connected to the gate electrode of the first transistor T1.

[0078] The second capacitor Chold includes a first electrode connected to the first driving voltage line VL1 and a second electrode connected to the lower gate electrode of the first transistor T1. The second electrode of the second capacitor Chold may also be connected to the second electrode of the first transistor T1.

[0079] The second transistor T2 includes a first electrode connected to the data line DLj, a second electrode connected to the gate electrode of the first transistor T1, and a gate electrode connected to the scan line GWLi. The second transistor T2 can be turned on in response to the scan signal GWi transmitted through the scan line GWLi and can transmit the data signal Dj transmitted through the data line DLj to the gate electrode of the first transistor T1.

[0080] The third transistor T3 is connected between the fourth driving voltage line VL4 and the gate electrode of the first transistor T1 and includes a gate electrode connected to the scan line GRLi. The third transistor T3 is turned on in response to the scan signal GRi transmitted through the scan line GRLi and transmits the reference voltage VREF from the fourth driving voltage line VL4 to the gate electrode of the first transistor T1.

[0081] The fourth transistor T4 is connected between the anode of the light-emitting element ED and the third drive voltage line VL3, through which the first initialization voltage VINT_R is transmitted, and includes a gate electrode connected to the scan line GILi. In an embodiment, the third drive voltage line VL3 may be referred to as an initialization voltage line. The fourth transistor T4 is turned on in response to the scan signal GIi transmitted via the scan line GILi, and transmits the first initialization voltage VINT_R to the anode of the light-emitting element ED. Thus, an initialization operation can be performed to initialize the anode of the light-emitting element ED.

[0082] The fifth transistor T5 includes a first electrode connected to the first driving voltage line VL1, a second electrode connected to the first electrode of the first transistor T1, and a gate electrode connected to the emission line EMLi.

[0083] The fifth transistor T5 is turned on in response to an emission signal EMi (hereinafter referred to as a 'first emission signal') transmitted through the emission line EMLi and may transfer the first driving voltage ELVDD to the first electrode of the first transistor T1 .

[0084] The sixth transistor T6 includes a first electrode connected to the second electrode of the first transistor T1 , a second electrode connected to the anode of the light emitting element ED, and a gate electrode connected to the emission line EBLi.

[0085] The sixth transistor T6 is turned on in response to an emission signal EBi (hereinafter referred to as a 'second emission signal') transmitted through the emission line EBLi, so that the second electrode of the first transistor T1 can be connected to the anode of the light emitting element ED.

[0086] An operation period of the pixel PX includes an address period AP during which the data signal Dj is received and a blank period BP during which the data signal Dj is not received.

[0087] The address period AP may include four cycles C1, C2, C3, and C4, and the blank period BP may include four cycles C5, C6, C7, and C8.

[0088] When the scan signal GWi is activated at a high level in the cycle C1 of the address period AP, the data signal Dj may be supplied to the gate electrode of the first transistor T1 .

[0089] Each of the cycles C1 to C8 includes a compensation period CP and an emission period EP.

[0090] When the emission signal EMi is at an active level (e.g., a high level) during the compensation period CP, the fifth transistor T5 may be turned on, allowing the first drive voltage ELVDD to be transmitted to the first electrode of the first transistor T1. In this case, when the scan signal GRi is at a high level, the third transistor T3 is also turned on. The first transistor T1 may be turned on by the reference voltage VREF transmitted through the third transistor T3. Therefore, the difference between the first drive voltage ELVDD and the threshold voltage (hereinafter referred to as "Vth") of the first transistor T1 (i.e., the voltage corresponding to "ELVDD-Vth") may be transmitted to the first electrode of the first capacitor Cst (i.e., the second electrode of the first transistor T1). A voltage boosted from the reference voltage VREF by "ELVDD-Vth" (i.e., the voltage of the gate electrode of the first transistor T1) may be applied to the second electrode of the first capacitor Cst. In other words, the compensation period CP may be a period for compensating for the threshold voltage Vth of the first transistor T1.

[0091] When the scan signal GIi is activated at a high level, the fourth transistor T4 may be turned on, and thus the anode of the light emitting element ED may be initialized to the first initialization voltage VINT_R.

[0092] When the scan signal GWi is activated at a high level, the second transistor T2 is turned on, and the data signal Dj is transferred to the gate electrode of the first transistor T1.

[0093] When the fifth transistor T5 and the sixth transistor T6 are simultaneously turned on during the emission period EP in which the emission signals EMi and EBi are at a high level, a current path may be formed between the first driving voltage line VL1 and the light emitting element ED. In this case, a driving current corresponding to the data signal Dj supplied to the gate electrode of the first transistor T1 is supplied to the light emitting element ED through the first transistor T1, and thus the light emitting element ED may emit light.

[0094] Figure 5 is a diagram showing the relationship between the grayscale levels of image signals RGB and the brightness according to the target brightness.

[0095] refer to Figure 5 Even if the grayscale levels of the image signals RGB are the same, the brightness of the image displayed on the electronic device DD changes according to the first, second, third, fourth, and fifth target brightnesses DBV1, DBV2, DBV3, DBV4, and DBV5.

[0096] When the gray levels of the image signal RGB are the same, in the case of a high target brightness, the brightness of the image displayed on the electronic device DD is high. In the embodiment, the target brightness has a relationship of "DBV1 < DBV2 < DBV3 < DBV4 < DBV5".

[0097] One of the methods for adjusting the brightness of the image displayed on the electronic device DD according to the first target brightness DBV1, the second target brightness DBV2, the third target brightness DBV3, the fourth target brightness DBV4, and the fifth target brightness DBV5 is to adjust the pulse widths of the emission signals EMi and EBi.

[0098] Figure 5 The relationship between the gray levels of the image signal RGB shown and the brightness with respect to each of the first target brightness DBV1, the second target brightness DBV2, the third target brightness DBV3, the fourth target brightness DBV4, and the fifth target brightness DBV5 is only an example, and the present disclosure is not limited thereto.

[0099] Figure 6 is a diagram showing the emission signal EMi according to the target brightness and the ambient temperature.

[0100] Reference Figure 5 and Figure 6 , the fifth target brightness DBV5 has a value higher than the first target brightness DBV1.

[0101] The first line DBV5_RTE is the emission signal EMi corresponding to the fifth target brightness DBV5 at room temperature (for example, 25 degrees Celsius (°C)).

[0102] The second line DBV5_HTE is the emission signal EMi corresponding to the fifth target brightness DBV5 at a high temperature (for example, 40 °C).

[0103] The third line DBV1_RTE is the emission signal EMi corresponding to the first target brightness DBV1 at room temperature (for example, 25 °C).

[0104] The fourth line DBV1_HTE is the emission signal EMi corresponding to the first target brightness DBV1 at a high temperature (for example, 40 °C).

[0105] As the target brightness decreases, the high-level period of the emission signal EMi (i.e., the emission period EP (see Figure 4 )) becomes shorter.

[0106] In addition, even when the target brightness is the same, the waveform of the emission signal EMi can change according to the ambient temperature.

[0107] In particular, when the target brightness is low (eg, the first target brightness DBV1) and the ambient temperature is high, the pulse width of the emission signal EMi decreases, and thus the pixel PX (see FIG. 1 ) is not illuminated. Figure 3 ) may not be able to fully emit light with the desired brightness.

[0108] Figure 7 is a graph showing changes in the first display quality TLS according to target luminance.

[0109] Figure 7 A change in the first display quality TLS according to the first target brightness DBV1 and the fifth target brightness DBV5 is shown.

[0110] In an embodiment, the first display quality TLS is an electronic device DD (see Figure 1 For example, the first display quality TLS may be a value expressing a brightness change amount according to a temperature change amount as a ratio.

[0111] refer to Figure 7 At the fifth target brightness DBV5, the first display quality TLS varies less than 1% at most according to brightness. At the first target brightness DBV1, the first display quality TLS varies at most according to brightness by about 10%.

[0112] When the target brightness is the first target brightness DBV1, the first display quality TLS (ie, brightness) of the electronic device DD may change rapidly according to the ambient temperature. These brightness changes may degrade the display quality of the electronic device DD.

[0113] Figure 8 is a graph showing changes in pixel luminance according to target luminance and ambient temperature.

[0114] exist Figure 8 , when the target brightness is the first target brightness DBV1 and the ambient temperature is low (eg, 10° C.), the first line DBV1_LT shows the pixel PX (see Figure 3 ) brightness changes over time.

[0115] When the target brightness is the first target brightness DBV1 and the ambient temperature is high (eg, 40° C.), the second line DBV1_HT shows a brightness change of the pixel PX over time.

[0116] When the target brightness is the fifth target brightness DBV5 and the ambient temperature is low (for example, 10° C.), the third line DBV5_LT shows a brightness change of the pixel PX over time.

[0117] When the target brightness is the fifth target brightness DBV5 and the ambient temperature is high (eg, 40° C.), the fourth line DBV5_HT shows a brightness change of the pixel PX over time.

[0118] refer to Figure 8 When the target brightness is the fifth target brightness DBV5, the brightness of the pixel PX does not change significantly according to the change in ambient temperature. However, when the ambient temperature is low and the target brightness is the first target brightness DBV1, the brightness of the pixel PX changes greatly according to the temperature.

[0119] Figure 9A and Figure 9B is a timing chart showing the operation of the pixel PX.

[0120] exist Figure 9A In the example shown in FIG, when the time during which the scan signal GWi is maintained at a high level is 4 hours, the compensation period CP has a first compensation time CP1. For example, the first compensation time CP1 is 34 hours. In an embodiment, 1 hour may be a period during which the data signal Dj is provided to the display panel DP (see FIG. Figure 2 ) duration of a pixel PX in a row.

[0121] exist Figure 9B In the example shown in , when the time in which the scan signal GWi is maintained at a high level is 4H, the compensation period CP has a second compensation time CP2. For example, the second compensation time CP2 is 26H.

[0122] Figure 10A is a graph showing voltage-current characteristics of the first transistor T1 in the pixel PX when the compensation period CP has a first compensation time CP1.

[0123] refer to Figure 10A The first line RT_CP1 represents the voltage-current characteristics of the first transistor T1 in the pixel PX at room temperature (e.g., 25° C.) when the compensation period CP has the first compensation time CP1. The second line HT_CP1 represents the voltage-current characteristics of the first transistor T1 in the pixel PX at a high temperature (e.g., 40° C.) when the compensation period CP has the first compensation time CP1.

[0124] Figure 10B is a graph showing voltage-current characteristics of the first transistor T1 in the pixel PX when the compensation period CP has the second compensation time CP2.

[0125] refer to Figure 10B The third line RT_CP2 indicates that when the compensation period CP has the second compensation time CP2, the first transistor T1 in the pixel PX (see Figure 3) at room temperature (eg, 25° C.). The fourth line HT_CP2 represents the voltage-current characteristics of the first transistor T1 in the pixel PX at high temperature (eg, 40° C.) when the compensation period CP has the second compensation time CP2.

[0126] refer to Figure 10A and Figure 10B , the voltage-current characteristic of the first transistor T1 in the pixel PX at room temperature is not significantly affected by the compensation time of the compensation period CP.

[0127] When the compensation period CP has the first compensation time CP1 (ie, when the compensation period CP becomes longer), the position of the compensation point CPa is lowered, at which the first line RT_CP1 and the second line HT_CP1 are satisfied.

[0128] When the compensation period CP has the second compensation time CP2 (ie, when the compensation period CP becomes shorter), the position of the compensation point CPb rises, at which the third line RT_CP2 and the fourth line HT_CP2 are satisfied.

[0129] In other words, it can be seen that when the ambient temperature is high, the voltage-current characteristic of the first transistor T1 changes according to the compensation time of the compensation period CP.

[0130] The first transistor T1 is configured to generate a gate electrode according to a signal (ie, a data signal Dj (see FIG. Figure 3 )) changes the current Ids between the first electrode and the second electrode, and thus the light emitting element ED can be adjusted by adjusting the compensation time of the compensation period CP (see Figure 3 ) brightness.

[0131] Return to Figure 2 The driving controller 100 may output the emission control signal ECS based on the target brightness information included in the control signal CTRL. The emission control signal ECS may output the emission signal EMi obtained by adjusting the compensation time of the compensation period CP under the control of the driving controller 100.

[0132] In an embodiment, when the target brightness is the fifth target brightness DBV5 , the compensation period CP may have a first compensation time CP1 .

[0133] In an embodiment, when the target brightness is the first target brightness DBV1 , the compensation period CP may have a second compensation time CP2 .

[0134] In other words, when the target brightness is higher, the compensation time of the compensation period CP may be longer.

[0135] Figure 11is a graph showing changes in pixel luminance according to target luminance and ambient temperature.

[0136] exist Figure 11 , when the target brightness is the first target brightness DBV1 and the ambient temperature is low (eg, 10° C.), the first line DBV1_LT shows the pixel PX (see Figure 3 ) brightness changes over time.

[0137] When the target brightness is the first target brightness DBV1 and the ambient temperature is high (eg, 40° C.), the second line DBV1_HT shows a brightness change of the pixel PX over time.

[0138] The fifth line DBV1_CP2 shows the brightness variation of the pixel PX over time when the target brightness is the first target brightness DBV1 , the ambient temperature is high (eg, 40° C.), and the compensation period CP has the second compensation time CP2 .

[0139] When the second line DBV1_HT is compared with the fifth line DBV1_CP2, it can be seen that when the target brightness is the first target brightness DBV1, the brightness of the pixel PX has decreased according to the change amount of the ambient temperature when the compensation period CP is set to have the second compensation time CP2.

[0140] When the target brightness is the fifth target brightness DBV5 and the ambient temperature is low (for example, 10° C.), the third line DBV5_LT shows a brightness change of the pixel PX over time.

[0141] When the target brightness is the fifth target brightness DBV5 and the ambient temperature is high (eg, 40° C.), the fourth line DBV5_HT shows a brightness change of the pixel PX over time.

[0142] The sixth line DBV5_CP1 shows a luminance variation of the pixel PX over time when the target luminance is the fifth target luminance DBV5, the ambient temperature is high (eg, 40° C.), and the compensation period CP has the first compensation time CP1.

[0143] When the fourth line DBV5_HT is compared with the sixth line DBV5_CP1, it can be seen that when the target brightness is the fifth target brightness DBV5, the brightness of the pixel PX has decreased according to the change amount of the ambient temperature when the compensation period CP is set to have the first compensation time CP1.

[0144] As described above, by setting the compensation time of the compensation period CP to an appropriate value according to the target brightness, the brightness deviation according to the temperature of the electronic device DD can be reduced. Therefore, the temperature brightness sensitivity of the electronic device DD (ie, the first display quality TLS (see Figure 7 ))changes.

[0145] Figure 12 is a diagram showing pixels PX disposed on the display panel DP.

[0146] refer to Figure 12 The display panel DP includes a first color pixel PXR, a second color pixel PXG, and a third color pixel PXB. The light emitting element ED (see FIG. 1 ) included in each of the first color pixel PXR, the second color pixel PXG, and the third color pixel PXB. Figure 3 ) can emit light of different colors.

[0147] In an embodiment, the first color pixel PXR receives a first initialization voltage VINT_R, the second color pixel PXG receives a second initialization voltage VINT_G, and the third color pixel PXB receives a third initialization voltage VINT_B.

[0148] The first initialization voltage VINT_R, the second initialization voltage VINT_G, and the third initialization voltage VINT_B may be provided to Figure 3 The first electrode of the fourth transistor T4 in the pixel PX shown in FIG.

[0149] Figure 3 The pixel PX shown in the figure may be a first color pixel PXR including a light-emitting element ED that emits a first color light. When the pixel PX is the first color pixel PXR including a light-emitting element ED that emits the first color light, a first initialization voltage VINT_R may be supplied to the first electrode of the fourth transistor T4 in the pixel PX. When the pixel PX is the second color pixel PXG including a light-emitting element ED that emits a second color light, a second initialization voltage VINT_G may be supplied to the first electrode of the fourth transistor T4 in the pixel PX. When the pixel PX is the third color pixel PXB including a light-emitting element ED that emits a third color light, a third initialization voltage VINT_B may be supplied to the first electrode of the fourth transistor T4 in the pixel PX.

[0150] In an embodiment, the first, second, and third initialization voltages VINT_R, VINT_G, and VINT_B may be different voltage levels from each other. In an embodiment, at least two of the first, second, and third initialization voltages VINT_R, VINT_G, and VINT_B may have the same voltage level as each other.

[0151] Figure 13A and Figure 13B is a graph showing luminance deviations of the first color pixel PXR, the second color pixel PXG, and the third color pixel PXB.

[0152] refer to Figure 12 and Figure 13A , shows the brightness deviation LR in the first color pixel PXR, the brightness deviation LG in the second color pixel PXG, and the brightness deviation LB in the third color pixel PXB when the ambient temperature changes from room temperature (e.g., 25° C.) to high temperature (e.g., 40° C.). Figure 13A , reference symbol LW denotes a luminance deviation when a white image is displayed in the first color pixel PXR, the second color pixel PXG, and the third color pixel PXB.

[0153] exist Figure 13A In the example shown in , the luminance deviation LR of the first color pixel PXR and the luminance deviation LB of the third color pixel PXB are smaller than the luminance deviation LW of the white image and the luminance deviation LG of the second color pixel PXG.

[0154] Therefore, the brightness deviation among the first color pixel PXR, the second color pixel PXG, and the third color pixel PXB can reduce the brightness of the electronic device DD (see Figure 1 ) of the second display quality. In an embodiment, the second display quality is the electronic device DD (see Figure 1 )’s temperature color sensitivity.

[0155] Return Reference Figure 3 , when the scan signal GIi is activated at a high level, the fourth transistor T4 may be turned on, and thus the anode of the light emitting element ED is initialized to the first initialization voltage VINT_R.

[0156] When all of the first transistor T1, the fifth transistor T5 and the sixth transistor T6 are in the emission period EP (see Figure 4 ), the emission delay time of the light emitting element ED can be adjusted according to the voltage difference (ELVDD-VINT_R) between the first driving voltage ELVDD and the voltage of the anode of the light emitting element ED (i.e., the first initialization voltage VINT_R). For example, when the voltage level of the first initialization voltage VINT_R increases, the voltage difference (ELVDD-VINT_R) between the first driving voltage ELVDD and the voltage of the anode of the light emitting element ED (i.e., the first initialization voltage VINT_R) decreases, and the emission delay time of the light emitting element ED decreases.

[0157] exist Figure 13AIn the example shown in , the brightness deviation LR of the first color pixel PXR and the brightness deviation LB of the third color pixel PXB have a value less than 0. In an embodiment, the voltage level of each of the first initialization voltage VINT_R supplied to the first color pixel PXR and the third initialization voltage VINT_B supplied to the third color pixel PXB may be increased. The reduction in brightness of the first color pixel PXR and the third color pixel PXB may be compensated by reducing the emission delay time of the first color pixel PXR and the third color pixel PXB.

[0158] Therefore, if Figure 13B As shown in FIG, the brightness deviation LW of the white image according to the temperature change, the brightness deviation LR of the first color pixel PXR, the brightness deviation LG of the second color pixel PXG, and the brightness deviation LB of the third color pixel PXB become similar to each other. Therefore, the electronic device DD (see FIG) can be effectively improved. Figure 1 )'s second display quality (i.e., temperature color sensitivity).

[0159] Figure 14 is a graph showing an emission signal EMi according to target brightness and ambient temperature.

[0160] Figure 14 The first line DBV5_RTE, the second line DBV5_HTE, the third line DBV1_RTE and the fourth line DBV1_HTE shown in FIG Figure 6 , and thus additional description is omitted to avoid redundancy.

[0161] refer to Figure 12 、 Figure 13A and Figure 14 , the driving controller 100 may determine a voltage level of each of the first initialization voltage VINT_R, the second initialization voltage VINT_G, and the third initialization voltage VINT_B according to the brightness deviation LR of the first color pixel PXR, the brightness deviation LG of the second color pixel PXG, and the brightness deviation LB of the third color pixel PXB.

[0162] When the voltage level of each of the first initialization voltage VINT_R, the second initialization voltage VINT_G, and the third initialization voltage VINT_B is set to an optimal level, Figure 14 The fifth line DBV1_HTE2 shown in FIG. 1 may indicate an emission signal EMi corresponding to the first target brightness DBV1 at a high temperature (eg, 40° C.).

[0163] When the target brightness is low (for example, the first target brightness DBV1) and the ambient temperature is high, by reducing the emission delay time of the first color pixel PXR and the third color pixel PXB, the same effect as increasing the pulse width of the emission signal EMi can be achieved. Therefore, the electronic device DD (see Figure 1 )'s second display quality (i.e., temperature color sensitivity).

[0164] Figure 15A 、 Figure 15B and Figure 15C The luminance deviation ΔL and the chromaticity deviation du'v' according to the compensation time of the compensation period CP, the first initialization voltage VINT_R, the second initialization voltage VINT_G, and the third initialization voltage VINT_B are shown.

[0165] Figure 15A 、 Figure 15B and Figure 15C The luminance deviation ΔL and the chromaticity deviation du'v' when the target luminance is high (for example, the fifth target luminance DBV5 ) and the target luminance is low (for example, the first target luminance DBV1 ) are shown.

[0166] Assume that when the target brightness is high, the electronic device DD (see Figure 1 ) displays an image of 11 grayscale (G) (ie, 1 nit (NIT)). Assume that when the target brightness is high, the electronic device DD (see Figure 1 ) displays an image of 39 gray levels (G) (i.e., 0.06 nits (NIT)).

[0167] Figure 15A It shows the luminance deviation ΔL and chromaticity deviation du'v' according to the target luminance when the compensation time of the compensation period CP is 46H, the first initialization voltage VINT_R is -2.0V, the second initialization voltage VINT_G is -3.50V, the third initialization voltage VINT_B is -2.0V, and the second driving voltage ELVSS irrelevant to the target luminance is 0.0V.

[0168] exist Figure 15A In the example shown in , when the target brightness is high (e.g., the fifth target brightness DBV5), the brightness deviation ΔL is -1.5%, and the chromaticity deviation du'v' is 0.0144. When the target brightness is low (e.g., the first target brightness DBV1), the brightness deviation ΔL is 11%, and the chromaticity deviation du'v' is 0.0172.

[0169] Figure 15BIt shows the brightness deviation ΔL and chromaticity deviation du'v' according to the target brightness when the compensation time of the compensation period CP is increased to 50H when the target brightness is high (for example, the fifth target brightness DBV5), or when the compensation time of the compensation period CP is reduced to 26H when the target brightness is low (for example, the first target brightness DBV1).

[0170] exist Figure 15B In the example shown in FIG, when the target brightness is high (for example, the fifth target brightness DBV5), the brightness deviation ΔL is changed from -1.5% (see Figure 15A ) is reduced to 0.5%. When the target brightness is low (for example, the first target brightness DBV1), the brightness deviation ΔL is reduced from 11% (see Figure 15A ) is reduced to 0.9%.

[0171] Figure 15C The luminance deviation ΔL and the chromaticity deviation du'v' according to the target brightness are shown when each of the first initialization voltage VINT_R and the third initialization voltage VINT_B is reduced to -3.5V when the target brightness is high (for example, the fifth target brightness DBV5), or when the second initialization voltage VINT_G is reduced to -5V and the first initialization voltage VINT_R and the third initialization voltage VINT_B are increased to -1V when the target brightness is low (for example, the first target brightness DBV1).

[0172] exist Figure 15A In the example shown in FIG, a chromaticity deviation du'v' of 0.0144 means that in the electronic device DD (see Figure 1 ) has a tendency to be reddish. Therefore, it is necessary to delay the emission speed of the first color pixel PXR and the emission speed of the third color pixel PXB by lowering the voltage level of the first initialization voltage VINT_R and the voltage level of the third initialization voltage VINT_B.

[0173] exist Figure 15C In the example shown in FIG, when the target brightness is high (eg, the fifth target brightness DBV5), by reducing the first initialization voltage VINT_R and the third initialization voltage VINT_B to -3.5V, the chromaticity deviation du'v' can be reduced from 0.0144 (see Figure 15A ) is reduced to 0.0078.

[0174] exist Figure 15A In the example shown in FIG, a chromaticity deviation du'v' of 0.0172 means that in the electronic device DD (see Figure 1) has a tendency to be greenish. Therefore, it is necessary to delay the emission speed of the second color pixel PXG by lowering the voltage level of the second initialization voltage VINT_G, and it is necessary to reduce the emission delay time of the first color pixel PXR and the emission delay time of the third color pixel PXB by increasing the voltage levels of the first initialization voltage VINT_R and the third initialization voltage VINT_B.

[0175] exist Figure 15C In the example shown in FIG, when the target brightness is low (for example, the first target brightness DBV1), by reducing the second initialization voltage VINT_G to -5V and increasing the first initialization voltage VINT_R and the third initialization voltage VINT_B to -1V, the chromaticity deviation du'v' can be increased from 0.0172 (see Figure 15A ) is reduced to 0.0097.

[0176] Figure 16 is a circuit diagram of a pixel PXa according to an embodiment of the present disclosure.

[0177] refer to Figure 16 , the pixel PXa includes a first transistor T1, a second transistor T2, a third transistor T3, a fifth transistor T5, a sixth transistor T6, a fourteenth transistor T14, a seventeenth transistor T17, a first capacitor Cst, a second capacitor Chold, and a light emitting element ED. Since the first transistor T1, the second transistor T2, the third transistor T3, the fifth transistor T5, and the sixth transistor T6 of the pixel PXa, the first capacitor Cst, the second capacitor Chold, and the light emitting element ED are Figure 3 The first transistor T1, the second transistor T2, the third transistor T3, the fifth transistor T5 and the sixth transistor T6, the first capacitor Cst, the second capacitor Chold and the light emitting element ED of the pixel PX illustrated in FIG are substantially the same, so the same reference numerals are used and additional description is omitted to avoid redundancy.

[0178] The fourteenth transistor T14 is connected between the second electrode of the first capacitor Cst and the fifth driving voltage line VL5 and includes a gate electrode connected to the scan line GILi.

[0179] The seventeenth transistor T17 is connected between the anode of the light emitting element ED and the third driving voltage line VL3 and includes a gate electrode connected to the scan line GILi.

[0180] In an embodiment, the voltage generator 500 may further provide the initialization voltage VINT2_R to the fifth driving voltage line VL5 .

[0181] In an embodiment, Figure 16The light emitting element ED of the pixel PXa shown in FIG can emit the first color light.

[0182] When the light emitting element ED of the pixel PXa emits the second color light or the third color light, the fifth driving voltage line VL5 may receive an initialization voltage different from the initialization voltage VINT2_R.

[0183] For example, Figure 12 The first color pixel PXR shown in FIG2 may receive an initialization voltage VINT2_R, the second color pixel PXG may receive an initialization voltage (referred to as “VINT2_G” (not shown)), and the third color pixel PXB may receive an initialization voltage (referred to as “VINT2_B” (not shown)).

[0184] In other words, in a similar method in which the voltage levels of the first initialization voltage VINT_R, the second initialization voltage VINT_G, and the third initialization voltage VINT_B are determined based on the brightness deviation between the first color pixel PXR, the second color pixel PXG, and the third color pixel PXB, the voltage levels of the initialization voltage VINT2_R, the initialization voltage VINT2_G, and the initialization voltage VINT2_B can be determined by the driving controller 100.

[0185] Although the embodiments of the present disclosure have been described for illustrative purposes, it will be understood by those skilled in the art that various modifications and substitutions are possible without departing from the scope and spirit of the present disclosure as disclosed in the appended claims. Therefore, the technical scope of the present disclosure is not limited to the detailed description of this specification, but should be defined by the claims.

[0186] An electronic device with this configuration can change the compensation time according to the target brightness. Therefore, it can effectively minimize display quality deviations according to the target brightness. Furthermore, an electronic device according to an embodiment of the present disclosure can provide an initialization voltage suitable for each color pixel. Therefore, it can effectively minimize brightness deviations between multiple color pixels.

[0187] While the present disclosure has been described with reference to the embodiments thereof, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the disclosure as set forth in the appended claims.

Claims

1. An electronic device comprising: Memory; Drive controller; Light-emitting element; a first transistor including a first electrode, a second electrode, and a gate electrode configured to receive a data signal; a second transistor connected between a first driving voltage line and the first electrode of the first transistor and configured to receive a first emission signal; as well as a third transistor connected between the second electrode of the first transistor and the light emitting element and configured to receive a second emission signal, The first transmission signal includes a compensation period and a transmission period, and The memory stores instructions that, when executed by the driving controller, cause the driving controller to determine a compensation time of the compensation cycle according to a target brightness.

2. The electronic device according to claim 1, wherein The first transmit signal is at an active level for turning on the second transistor in each of the compensation period and the transmit period.

3. The electronic device according to claim 1, wherein When the target brightness has a first value, the compensation time of the compensation cycle is a first time, wherein, when the target brightness has a second value, the compensation time of the compensation cycle is a second time, and The memory stores an instruction that, when executed by the drive controller, causes the drive controller to set the first time to be longer than the second time when the first value is greater than the second value.

4. The electronic device according to claim 1, further comprising: A fourth transistor is connected between the light emitting element and an initialization voltage line configured to receive an initialization voltage.

5. The electronic device according to claim 4, wherein: The memory stores an instruction that, when executed by the drive controller, causes the drive controller to determine a voltage level of the initialization voltage based on the target brightness and characteristics of the light emitting element. The electronic device according to claim 1 , wherein: Each of the first transistor, the second transistor, and the third transistor is an N-type transistor.

7. An electronic device comprising: Memory; a display panel comprising a plurality of pixels, each of the plurality of pixels being connected to a plurality of scan lines, a first emission line, a second emission line, and a data line; a scan driving circuit configured to output a plurality of scan signals to the plurality of scan lines; a transmit driving circuit configured to output a first transmit signal and a second transmit signal to the first transmit line and the second transmit line, respectively; as well as a driving controller configured to control the emission driving circuit according to a target brightness, Each of the plurality of pixels comprises: Light-emitting element; a first transistor including a first electrode, a second electrode, and a gate electrode configured to receive a data signal from the data line; a second transistor connected between a first driving voltage line and the first electrode of the first transistor and configured to receive the first emission signal; and a third transistor connected between the second electrode of the first transistor and the light emitting element and configured to receive the second emission signal, The first transmission signal includes a compensation period and a transmission period, and The memory stores instructions that, when executed by the driving controller, cause the driving controller to determine a compensation time of the compensation cycle according to the target brightness.

8. The electronic device according to claim 7, wherein: The first transmit signal is at an active level for turning on the second transistor in each of the compensation period and the transmit period.

9. The electronic device according to claim 7, wherein: When the target brightness has a first value, the compensation time of the compensation cycle is a first time, wherein, when the target brightness has a second value, the compensation time of the compensation cycle is a second time, and The memory stores an instruction that, when executed by the drive controller, causes the drive controller to set the first time to be longer than the second time when the first value is greater than the second value.

10. The electronic device according to claim 7, wherein: The plurality of pixels include first color pixels, second color pixels, and third color pixels.

11. The electronic device according to claim 10, further comprising: a voltage generator configured to generate a first initialization voltage provided to the first color pixel, a second initialization voltage provided to the second color pixel, and a third initialization voltage provided to the third color pixel, In which, the memory stores instructions that, when executed by the drive controller, enable the drive controller to determine the voltage level of each of the first initialization voltage, the second initialization voltage, and the third initialization voltage based on the target brightness and the brightness deviation between the first color pixel, the second color pixel, and the third color pixel.

12. The electronic device according to claim 11, wherein: The first color pixel includes: A fourth transistor is connected between the light emitting element and a first initialization voltage line configured to receive the first initialization voltage.

13. The electronic device according to claim 12, wherein: The first color pixel further includes: a fifth transistor connected between the data line and the gate electrode of the first transistor and including a gate electrode connected to a first scan line among the plurality of scan lines; and A sixth transistor is connected between a reference voltage line and the gate electrode of the first transistor and includes a gate electrode connected to a second scan line among the plurality of scan lines.

14. The electronic device according to claim 13, wherein: The first color pixel further includes: a capacitor including a first electrode and a second electrode, the first electrode being connected to the gate electrode of the first transistor; and a seventh transistor connected between the second electrode of the capacitor and a second initialization voltage line.

15. The electronic device according to claim 7, wherein: Each of the first transistor, the second transistor, and the third transistor is an N-type transistor.

16. An electronic device comprising: Memory; Drive controller; A display panel comprising first color pixels, second color pixels, and third color pixels; as well as a voltage generator configured to generate a first initialization voltage provided to the first color pixel, a second initialization voltage provided to the second color pixel, and a third initialization voltage provided to the third color pixel, In which, the memory stores instructions that, when executed by the drive controller, enable the drive controller to determine the voltage level of each of the first initialization voltage, the second initialization voltage, and the third initialization voltage based on the target brightness and the brightness deviation between the first color pixel, the second color pixel, and the third color pixel.

17. The electronic device according to claim 16, wherein: The first color pixel includes: a light-emitting element configured to emit light of a first color; a first transistor including a first electrode, a second electrode, and a gate electrode configured to receive a data signal; a second transistor connected between a first driving voltage line and the first electrode of the first transistor and configured to receive a first emission signal; a third transistor connected between the second electrode of the first transistor and the light emitting element and configured to receive a second emission signal; and A fourth transistor is connected between the light emitting element and an initialization voltage line configured to receive the first initialization voltage.

18. The electronic device according to claim 17, wherein: The first transmission signal includes a compensation period and a transmission period, and The memory stores instructions that, when executed by the driving controller, cause the driving controller to determine a compensation time of the compensation cycle according to the target brightness.

19. The electronic device according to claim 18, wherein: The first transmit signal is at an active level for turning on the second transistor in each of the compensation period and the transmit period.

20. The electronic device according to claim 18, wherein When the target brightness has a first value, the compensation time of the compensation cycle is a first time, wherein, when the target brightness has a second value, the compensation time of the compensation cycle is a second time, and The memory stores an instruction that, when executed by the drive controller, causes the drive controller to set the first time to be longer than the second time when the first value is greater than the second value.

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