Display and electronic device comprising same

Abstract

A display is described. The display may comprise a display driving circuit. The display may include a display panel including pixels. The display may include a first gate driver circuit. The display may include a second gate driver circuit. Each of the pixels may include sub-pixels. Each of the sub-pixels may include a light-emitting element.

Description

Display and electronic device including it

[0001] The descriptions below relate to displays and electronic devices including them.

[0002] A display may be used to display an image. The display may include a display panel and a display driving circuit. The display driving circuit may be configured to display the image acquired from a processor of the electronic device on the display panel. For example, the display driving circuit may be configured to control a source driver (or data driver) of the electronic device and a gate driver (or scan driver) of the electronic device to display the image on the display panel.

[0003] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above-described matters constitute prior art related to the present disclosure.

[0004] A display is described. The display may include display driver integrated circuitry. The display may include a display panel including pixels. The display may include a first gate driver circuit. The display may include a second gate driver circuit. Each of the pixels may include sub-pixels. Each of the sub-pixels may include a light-emitting element. Each of the sub-pixels may include a storage capacitor configured to store a data voltage. Each of the sub-pixels may include a first transistor including a gate electrode electrically connected to the storage capacitor, a source electrode, and a drain electrode electrically connectable to an anode electrode of the light-emitting element, and configured to obtain a current to be provided to the light-emitting element according to the data voltage stored in the storage capacitor. Each of the sub-pixels may include a second transistor including a drain electrode electrically connected to the source electrode of the first transistor. Each of the sub-pixels may include a third transistor having a source electrode electrically connected to the anode electrode of the light-emitting element. The display driving circuit may be configured to adjust a threshold voltage of the first transistor by providing a bias voltage to the source electrode of the first transistor based on controlling the first gate driver circuit to change a state of a first signal transmitted to the gate electrode of the second transistor.The display driving circuit may be configured to initialize the anode electrode of the light-emitting element by providing an initialization voltage to the anode electrode of the light-emitting element based on controlling the second gate driver circuit to change the state of the second signal transmitted to the gate electrode of the third transistor. The sub-pixels may include a first sub-pixel configured to emit light with a first color and a second sub-pixel configured to emit light with a second color. A first bias voltage provided to the source electrode of the first transistor in the first sub-pixel according to the change in the state of the first signal may be different from a second bias voltage provided to the source electrode of the first transistor in the second sub-pixel according to the change in the state of the first signal.

[0005] The display may be incorporated into an electronic device. For example, the electronic device may be described as a portable device, a multi-function device, or a mobile device. For example, the electronic device may include at least one processor (e.g., including a processing circuit) and a memory that stores instructions and includes one or more storage media. The instructions, when individually or collectively executed by the at least one processor, may cause the electronic device to generate an image to be displayed on the display panel and provide the generated image to the display driving circuit.

[0006] Figure 1 is a chart showing the current in a light-emitting element that changes according to a change in the refresh rate.

[0007] Figure 2 is a schematic view of an electronic device including a display.

[0008] Figure 3 illustrates an example of a subpixel within a display panel.

[0009] Figures 4 to 6 illustrate examples of controlling a second transistor and a third transistor electrically connected to a first transistor.

[0010] FIG. 7 is a chart showing how brightness changes depending on controlling a third transistor electrically connected to the first transistor independently of controlling a second transistor electrically connected to the first transistor.

[0011] FIG. 8 is a block diagram of an electronic device within a network environment according to various embodiments.

[0012] FIG. 9 is a block diagram of a display module according to various embodiments.

[0013] An electronic device may display an image based on a refresh rate. For example, the refresh rate may be adaptively changed. For example, the electronic device may lower the refresh rate to reduce power consumption by displaying an image on a display panel of the electronic device. For example, the electronic device may change the refresh rate from a first refresh rate to a second refresh rate lower than the first refresh rate. For example, providing the second refresh rate may reduce power consumption, but providing the second refresh rate may cause afterimages (e.g., image sticking, afterimage, or image persistence) on the display panel.

[0014] For example, the electronic device may increase the refresh rate to enhance the quality of the image displayed on the display panel. For example, the electronic device may change the refresh rate from the second refresh rate to the first refresh rate.

[0015] For example, a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate may provide an indication on the display panel that is appropriate for the situation, but a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate may cause flickering. As a non-limiting example, the flickering may occur on the display panel under a condition that a difference between the first refresh rate and the second refresh rate is greater than or equal to a certain value.

[0016] The display panel may include pixels. Each of the pixels may include sub-pixels. Each of the sub-pixels may include a light-emitting element (e.g., an organic light emitting diode (OLED)). Each of the sub-pixels may include a driving transistor (e.g., a first transistor described below) configured to obtain a current provided to the light-emitting element to emit light from the light-emitting element. The flicker may be caused by a relationship between a voltage (e.g., a gate-source voltage of the driving transistor) and a current (e.g., a current provided to the light-emitting element (or a current from a drain electrode of the driving transistor to a source electrode of the driving transistor)) that change according to a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate. The flicker is described and exemplified in more detail with reference to FIG. 1.

[0017] Figure 1 is a chart showing the current in a light-emitting element that changes according to a change in the refresh rate.

[0018] Referring to FIG. 1, the relationship between the gate-source voltage of the driving transistor and the current (or current from the drain electrode of the driving transistor to the source electrode of the driving transistor) provided (or applied) to the light-emitting element (e.g., OLED) may change according to a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate. For example, the relationship changing according to a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate may cause the flickering.

[0019] The chart (100) represents a change in the relationship according to a change in the refresh rate (e.g., a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate). The horizontal axis of the chart (100) represents the gate-source voltage (Vgs) of the driving transistor, and the vertical axis of the chart (100) represents the current (or the current from the drain electrode of the driving transistor to the source electrode of the driving transistor) (Ids) provided to the light-emitting element (e.g., OLED). For example, a line (110) (or curve (110)) in the chart (100) represents a relationship between a gate-source voltage (Vgs) and a current (Ids) when an image is displayed on the display panel at the first refresh rate, and a line (120) (or curve (120)) in the chart (100) represents a relationship between a gate-source voltage (Vgs) and a current (Ids) when an image is displayed on the display panel at the second refresh rate.

[0020] As in the chart (100), the line (120) may be offset with respect to the line (110). For example, the value (111) of the current (Ids) in the line (110) when the gate-source voltage (Vgs) is at the value (130) may be different from the value (121) of the current (Ids) in the line (120) when the gate-source voltage (Vgs) is at the value (130). For example, when the difference (140) between the values ​​(111) and (121) is greater than a certain level, a change from the first refresh rate to the second refresh rate and / or a change from the second refresh rate to the first refresh rate may cause the flickering.

[0021] For example, adjusting the threshold voltage of the driving transistor by providing (or applying) a bias voltage to the source electrode of the driving transistor may be performed (or executed) to reduce the flicker. For example, since adjusting the threshold voltage of the driving transistor reduces the difference (140), adjusting the threshold voltage of the driving transistor may reduce the flicker (e.g., the occurrence of the flicker and / or the degree of the flicker).

[0022] As a non-limiting example, adjusting the threshold voltage of the driving transistor may be performed in conjunction with initializing the anode electrode of the light-emitting element by providing an initialization voltage to the anode electrode of the light-emitting element. For example, changing the state of a signal transmitted to a gate electrode of a threshold voltage adjustment transistor (e.g., a second transistor exemplified below) electrically connected to a source electrode of the driving transistor to adjust the threshold voltage of the driving transistor and changing the state of a signal transmitted to a gate electrode of a bypass transistor (e.g., a third transistor exemplified below) electrically connected to the anode electrode of the light-emitting element to initialize the anode electrode of the light-emitting element may be performed via one (a) gate driver circuit (or the same gate driver circuit) (or a single gate driver circuit). For example, the gate driver circuit used to adjust the threshold voltage of the driving transistor may be the same as the gate driver circuit used to initialize the anode electrode of the light-emitting element, for example, to perform adjusting the threshold voltage of the driving transistor in conjunction with initializing the anode electrode of the light-emitting element.

[0023] For example, while adjusting the threshold voltage of the driving transistor in conjunction with initializing the anode electrode of the light emitting element may reduce flickering, adjusting the threshold voltage of the driving transistor in conjunction with initializing the anode electrode of the light emitting element may increase the time until the luminance of light from the light emitting element reaches a target luminance. As a non-limiting example, the increase in time caused by adjusting the threshold voltage of the driving transistor in conjunction with initializing the anode electrode of the light emitting element may reduce the quality of an image displayed at a relatively low luminance on the display panel. For example, adjusting the threshold voltage of the driving transistor in conjunction with initializing the anode electrode of the light emitting element may cause cloudy spots, lines, and / or areas in an image displayed at a relatively low luminance on the display. For example, performing adjustment of the threshold voltage of the driving transistor in conjunction with initializing the anode electrode of the light emitting element may cause jelly scrolling within an image displayed at relatively low brightness on the display.

[0024] The display described below may be configured to perform initializing the anode electrode of the light-emitting element independently from adjusting the threshold voltage of the driving transistor. For example, performing initializing the anode electrode of the light-emitting element independently from adjusting the threshold voltage of the driving transistor may include initializing the anode electrode of the light-emitting element via a second gate driver circuit that is different from a first gate driver circuit (or scan driver circuit) used to adjust the threshold voltage of the driving transistor. For example, performing initializing the anode electrode of the light-emitting element independently from adjusting the threshold voltage of the driving transistor may include controlling the second gate driver circuit to change a state of a signal transmitted to a gate electrode of the bypass transistor independently from controlling the first gate driver circuit to change a state of a signal transmitted to a gate electrode of the threshold voltage adjusting transistor. For example, performing initializing the anode electrode of the light-emitting element independently from adjusting the threshold voltage of the driving transistor may include initializing the anode electrode of the light-emitting element less frequently (or less frequently) than the frequency of adjusting the threshold voltage of the driving transistor. For example, performing initializing the anode electrode of the light-emitting element independently from adjusting the threshold voltage of the driving transistor may include initializing the anode electrode of the light-emitting element less frequently than the frequency of adjusting the threshold voltage of the driving transistor.

[0025] Figure 2 is a schematic view of an electronic device including a display.

[0026] Referring to FIG. 2, the display (215) may include at least a portion of the display module (860) of FIG. 8 or correspond to at least a portion of the display module (860) of FIG. 8. For example, the display (215) may be described as a display device. For example, the display (215) may be included in the electronic device (200). For example, the electronic device (200) may include at least a portion of the electronic device (801) of FIG. 8 or correspond to at least a portion of the electronic device (801) of FIG. 8. For example, the electronic device (200) may include at least one processor (210) (e.g., including a processing circuit) (e.g., including a central processing unit (CPU), a graphic processing unit (GPU), and a display processing unit (DPU)). Although not shown in FIG. 2, the electronic device (200) may include a memory that includes one or more storage media and stores instructions. The memory may include at least a portion of the memory (830) of FIG. 8 or may correspond to at least a portion of the memory (830) of FIG. 8. The instructions, when individually or collectively executed by at least one processor (210), may cause the electronic device (200) to generate or obtain an image to be displayed via the display (215). The instructions, when individually or collectively executed by at least one processor (210), may provide data for the image to the display (215) (or the display driving circuit (220)) to display the image via the display (215).

[0027] The display (215) may include a display driving circuit (220) and a display panel (240).

[0028] The display driver circuit (220) may be used to display an image (e.g., an image provided from at least one processor (210)) on a display panel (240). For example, the display driver circuit (220) may include at least a portion of the display driver IC (DDI) (930) of FIG. 9 or may correspond to at least a portion of the DDI (930) of FIG. 9.

[0029] The display driving circuit (220) may perform (or execute) a first scan to display the image on the display panel (240). For example, the first scan may be described as an address scan. For example, the first scan may include initiating a gate terminal of the driving transistor, providing a data voltage to the initialized gate terminal of the driving transistor, and providing current to the light emitting element through the driving transistor having the provided data voltage at the gate terminal. For example, the first scan may further include initializing the gate terminal of the driving transistor by providing an initialization voltage to the gate terminal of the driving transistor, and providing a data voltage to the initialized gate terminal of the driving transistor, compared to the second scan exemplified below.

[0030] The display driving circuit (220) may perform (or execute) a second scan to maintain the image on the display panel (240). For example, the second scan may be described as a self scan. For example, the second scan may include providing current to the light-emitting element through the driving transistor while the data voltage provided to the gate terminal of the driving transistor according to the first scan is maintained. For example, the second scan may include skipping initializing the gate terminal of the driving transistor to maintain the data voltage provided to the gate terminal of the driving transistor according to the first scan. For example, the second scan, unlike the first scan, may not include initializing the gate terminal of the driving transistor and providing a data voltage to the initialized gate terminal of the driving transistor.

[0031] For example, the display panel (240) may include at least a portion of the display (910) of FIG. 9 or may correspond to at least a portion of the display (910) of FIG. 9.

[0032] The display panel (240) may include pixels. Each of the pixels may include sub-pixels. The sub-pixels may include a first sub-pixel configured to emit light with a first color (e.g., red), a second sub-pixel configured to emit light with a second color (e.g., green), and a third sub-pixel configured to emit light with a third color (e.g., blue). As a non-limiting example, the sub-pixels may further include a fourth sub-pixel configured to emit light with a fourth color (e.g., white).

[0033] For example, each of the sub-pixels may include a light-emitting element (e.g., an OLED) and a driving transistor (or a driving transistor for driving the light-emitting element) for providing current to the light-emitting element (or for obtaining current to be provided to the light-emitting element) (or for generating current to be provided to the light-emitting element) (or for applying current to be provided to the light-emitting element). For example, each of the sub-pixels may include an operation control transistor including a drain electrode electrically connected to a source electrode of the driving transistor and a source electrode electrically connected to a driving voltage line for transmitting a driving voltage (VDD). For example, each of the sub-pixels may include an emission control transistor including a source electrode electrically connected to a drain electrode of the driving transistor and a drain electrode electrically connected to an anode electrode of the light-emitting element. For example, the display driving circuit (220) may provide an emission signal to each of the gate electrode of the operation control transistor and the gate electrode of the emission control transistor. When the above-described light-emitting signal is provided to each of the gate electrode of the operation control transistor and the gate electrode of the light-emitting control transistor, the current obtained through the driving transistor can be provided to the light-emitting element. For example, the light-emitting element can emit light according to the current.

[0034] As a non-limiting example, each of the sub-pixels may further include, in addition to the driving transistor, the operation control transistor, and the light emission control transistor exemplified above, one or more other transistors and one or more capacitors. An example configuration of each of the sub-pixels is described and illustrated with reference to FIG. 3.

[0035] Figure 3 illustrates an example of a subpixel within a display panel.

[0036] Referring to FIG. 3, each of the sub-pixels may include a light-emitting element (e.g., a light-emitting diode (300) or OLED (300)), a first transistor (301) (e.g., the driving transistor), a second transistor (302) (e.g., the threshold voltage adjustment transistor), a third transistor (303) (e.g., the bypass transistor), a fourth transistor (304) (e.g., the initialization transistor), a fifth transistor (305) (e.g., the operation control transistor), a sixth transistor (306) (e.g., the light-emitting control transistor), a seventh transistor (307) (e.g., a switching transistor), an eighth transistor (308) (e.g., a compensation transistor), and a capacitor (309) (e.g., a storage capacitor). The components, their relationships, and their functions within each of the sub-pixels illustrated in FIG. 3 are exemplary only and do not limit the implementations (or configurations) described or claimed within this document.

[0037] The gate electrode (G) of the first transistor (301) may be electrically connected to the drain electrode (D) of the eighth transistor (308). The gate electrode (G) of the first transistor (301) may also be electrically connected to the drain electrode (D) of the fourth transistor (304). The gate electrode (G) of the first transistor (301) may also be electrically connected to a capacitor (309) used to store a data voltage (Vdata). The gate electrode (G) of the first transistor (301) may also be electrically connected to a capacitor (310) (optional) used to compensate for a voltage drop caused by a change in the state of the fifth signal (315) transmitted to the gate electrode (G) of the first transistor (301) (e.g., a change from a second state (e.g., a low state) to a first state (e.g., a high state)).

[0038] The source electrode (S) of the first transistor (301) may be electrically connected to the drain electrode (D) of the seventh transistor (307). The source electrode (S) of the first transistor (301) may also be electrically connected to the drain electrode (D) of the fifth transistor (305). The source electrode (S) of the first transistor (301) may also be electrically connected to the drain electrode (D) of the second transistor (302).

[0039] The drain electrode (D) of the first transistor (301) can be electrically connected to the source electrode (S) of the eighth transistor (308). The drain electrode (D) of the first transistor (301) can also be electrically connected to the source electrode (S) of the sixth transistor (306).

[0040] The first transistor (301) can be used to provide current (320) to the OLED (300).

[0041] The gate electrode (G) of the seventh transistor (307) may be configured to receive the fifth signal (315). The source electrode (S) of the seventh transistor (307) may be configured to obtain the data voltage (Vdata).

[0042] The gate electrode (G) of the eighth transistor (308) can be configured to receive a second signal (312).

[0043] The gate electrode (G) of the fourth transistor (304) may be configured to receive a first signal (311). The source electrode (S) of the fourth transistor (304) may be configured to obtain a first initialization voltage (Vint1) (e.g., about -3.5 (V)).

[0044] The gate electrode (G) of the fifth transistor (305) may be configured to receive a light emission signal (316). The source electrode of the fifth transistor (305) may be configured to obtain a first driving voltage (VDD).

[0045] The gate electrode (G) of the sixth transistor (306) may be configured to receive a light emission signal (316). The drain electrode (D) of the sixth transistor (306) may be electrically connected to the source electrode (S) of the third transistor (303). The drain electrode (D) of the sixth transistor (306) may also be electrically connected to the anode electrode of the OLED (300).

[0046] The gate electrode (G) of the third transistor (303) may be configured to receive a fourth signal (314). The drain electrode (D) of the third transistor (303) may be configured to obtain a second initialization voltage (e.g., about -3 (V)).

[0047] The gate electrode (G) of the second transistor (302) may be configured to receive a third signal (313). The source electrode (S) of the second transistor (302) may be configured to obtain a bias voltage (Vbias). The bias voltage (Vbias) may vary depending on the color of light emitted by the sub-pixel. For example, a first bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel among the sub-pixels may be different from a second bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel among the sub-pixels. For example, a third bias voltage provided to a source electrode (S) of a first transistor (301) in a third sub-pixel among the sub-pixels may be different from a first bias voltage provided to a source electrode (S) of a first transistor (301) in a first sub-pixel among the sub-pixels and / or a second bias voltage provided to a source electrode (S) of a first transistor (301) in a second sub-pixel among the sub-pixels. As a non-limiting example, the third bias voltage may be higher than the first bias voltage and the second bias voltage. As a non-limiting example, the first bias voltage may be higher than the second bias voltage. As a non-limiting example, the difference between the first bias voltage and the second bias voltage may be about 0.01 (V) or less. As a non-limiting example, the difference between the first bias voltage and the third bias voltage may be about 0.01 (V) or less.

[0048] For example, the fourth bias voltage provided to the source electrode (S) of the first transistor (301) in the fourth sub-pixel among the sub-pixels may be different from the first bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel among the sub-pixels, the second bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel among the sub-pixels, and / or the third bias voltage provided to the source electrode (S) of the first transistor (301) in the third sub-pixel.

[0049] The cathode electrode of the OLED (300) can be configured to obtain a second driving voltage (VSS).

[0050] For example, the display driving circuit (220) can display an image on the display panel (240) based on performing the first scan by providing the first signal (311), the second signal (312), the third signal (313), the fourth signal (314), the fifth signal (315), and the emission signal (316) to each of the sub-pixels. For example, the display driving circuit (220) can maintain an image on the display panel (240) based on performing the second scan by providing the third signal (313) and the emission signal (316) to each of the sub-pixels.

[0051] For example, the display driving circuit (220) can change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) independently from changing the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) for the quality of an image displayed (and / or maintained) at a relatively low brightness on the display panel (240).

[0052] For example, changing the state of the third signal (313) may be performed by controlling the first gate driver circuit, and changing the state of the fourth signal (314) may be performed by controlling the second gate driver circuit, which is different from the first gate driver circuit. As a non-limiting example, the first gate driver circuit and the second gate driver circuit may be included in the display driving circuit (220). As a non-limiting example, the first gate driver circuit and the second gate driver circuit may be included in the display panel (240).

[0053] As a non-limiting example, each of the sub-pixels may include a first electrical path (not shown) electrically connected to the gate electrode (G) of the second transistor (302) for a third signal (313) and a second electrical path (not shown) electrically connected to the gate electrode (G) of the third transistor (303) for a fourth signal (314). For example, the second electrical path may be electrically separated or isolated from the first electrical path so as to change the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) independently of changing the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302).

[0054] For example, the display driving circuit (220) can adjust (or change) (or calibrate) the threshold voltage of the first transistor (301) by providing a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) based on controlling the first gate driver circuit to change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302). For example, the display driving circuit (220) can adjust the threshold voltage of the first transistor (301) to reduce flickering caused by a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate.

[0055] For example, the display driving circuit (220) can initialize the anode electrode of the OLED (300) by providing a second initialization voltage (Vint2) to the anode electrode of the OLED (300) based on controlling the second gate driver circuit to change the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303). For example, since initializing the anode electrode of the OLED (300) is performed by the second gate driver circuit different from the first gate driver circuit used to adjust the threshold voltage of the first transistor (301), adjusting the threshold voltage of the first transistor (301) can be performed more frequently than initializing the anode electrode of the OLED (300). For example, adjusting the threshold voltage of the first transistor (301) may be performed more frequently than initializing the anode electrode of the OLED (300) to reduce the time until the luminance of light from the OLED (300) reaches a target luminance and to reduce flickering caused by a change from the first refresh rate to the second refresh rate or a change from the second refresh rate to the first refresh rate.

[0056] As a non-limiting example, the number of times the threshold voltage of the first transistor (301) is adjusted within a time period of the vertical synchronization signal may be greater than the number of times the anode electrode of the OLED (300) is initialized within the time period of the vertical synchronization signal. As a non-limiting example, the number of times the threshold voltage of the first transistor (301) is adjusted while performing the first scan may be greater than the number of times the anode electrode of the OLED (300) is initialized while performing the first scan. As a non-limiting example, the number of times the threshold voltage of the first transistor (301) is adjusted while performing the second scan may be greater than the number of times the anode electrode of the OLED (300) is initialized while performing the second scan.

[0057] For example, since adjusting the threshold voltage of the first transistor (301) is performed more frequently than initializing the anode electrode of the OLED (300), the third transistor (303) may be configured with an NMOS (n-channel metal oxide semiconductor), unlike the second transistor (302) which is configured with a PMOS (P-channel metal oxide semiconductor). For example, since the number of times the anode electrode of the OLED (300) is initialized is less than the number of times the threshold voltage of the first transistor (301) is adjusted, the third transistor (303) may include an NMOS to reduce leakage current at the anode electrode of the OLED (300) caused while the data voltage (Vdata) is maintained at the gate electrode (G) of the first transistor (301). For example, the bias voltage (Vbias) may be provided to the source electrode (S) of the first transistor (301) while transmitting the third signal (313) within the second state to the gate electrode (G) of the second transistor (302), and the second initialization voltage (Vint2) may be provided to the anode electrode of the OLED (300) while transmitting the fourth signal (314) within the first state to the gate electrode (G) of the third transistor (303).

[0058] For example, since initializing the anode electrode of the OLED (300) is performed by the second gate driver circuit which is different from the first gate driver circuit used to adjust the threshold voltage of the first transistor (301), a first time duration for providing a bias voltage to the source electrode (S) of the first transistor (301) to adjust the threshold voltage of the first transistor (301) may be different from a second time duration for providing a second initialization voltage (Vint2) to the anode electrode of the OLED (300) to initialize the anode electrode of the OLED (300). For example, the length of the first time duration may be longer than the length of the second time duration. However, the present invention is not limited thereto. For example, the length of the first time duration may be the same as the length of the second time duration.

[0059] For example, since initializing the anode electrode of the OLED (300) is performed by the second gate driver circuit that is different from the first gate driver circuit used to adjust the threshold voltage of the first transistor (301), the first time period may at least partially overlap with the second time period or may not overlap with the second time period.

[0060] Controlling the second transistor (302) and the third transistor (303) is described and illustrated in more detail with reference to FIGS. 4, 5, and 6.

[0061] Figures 4 to 6 illustrate examples of controlling a second transistor and a third transistor electrically connected to a first transistor.

[0062] Referring to FIG. 4, the display driving circuit (220) can perform the first scan within the time period (400) before the light emitting signal (316) is transmitted to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within the time period (490).

[0063] For example, the display driving circuit (220) can change the state of the first signal (311) transmitted to the gate electrode (G) of the fourth transistor (304) from the second state (e.g., low state) to the first state (e.g., high state) at time (401) (or timing (401)). For example, the display driving circuit (220) can initialize the gate electrode (G) of the first transistor (301) based on providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) by maintaining the state of the first signal (311) in the first state for a time period (402) from time (401). For example, the display driving circuit (220) can change the state of the first signal (311) from the first state to the second state at time (403) (or timing (403)). For example, providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) may be interrupted by changing the state of the first signal (311) from the first state to the second state.

[0064] For example, the display driving circuit (220) can change the state of the second signal (312) transmitted to the gate electrode (G) of the eighth transistor (308) from the second state to the first state at a time (407) (or timing (407)) after the time (403). For example, the display driving circuit (220) can electrically connect the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) via the eighth transistor (308) during the time period (408) by maintaining the state of the second signal (312) in the first state during a time period (408) from the time (407). For example, the display driving circuit (220) can change the state of the second signal (312) from the first state to the second state at a time period (409). Electrically connecting the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) through the eighth transistor (308) can be interrupted by changing the state of the second signal (312) from the first state to the second state.

[0065] For example, the display driving circuit (220) can change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state at time (407). For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (408) by maintaining the state of the third signal (313) in the second state for a time period (408) from time (407). For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (408) in which the state of the second signal (312) is maintained in the second state. For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) for a time period (408) so that current from the source electrode (S) of the first transistor (301) to the drain electrode (D) of the first transistor (301) flows to the capacitor (309) through the eighth transistor (308). For example, the display driving circuit (220) can adjust the threshold voltage of the first transistor (301) by providing the bias voltage (Vbias) to the source electrode (S) of the first transistor (301) for a time period (408). As a non-limiting example, a bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel may be different from a bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel.As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) in the third sub-pixel to adjust the threshold voltage of the first transistor (301) in the third sub-pixel may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel and / or the bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel. For example, the display driver circuit (220) may change the state of the third signal (313) from the second state to the first state at time (409). Providing a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) can be stopped by changing the state of the third signal (313) from the second state to the first state.

[0066] For example, the display driving circuit (220) can change the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state at time (407). For example, the time for changing the state of the third signal (313) from the first state to the second state and the time for changing the state of the fourth signal (314) from the second state to the first state are the same as time (407), but changing the state of the fourth signal (314) from the second state to the first state can be performed independently from changing the state of the third signal (313) from the first state to the second state. For example, the display driving circuit (220) can provide the second initialization voltage (Vint2) to the anode electrode of the OLED (300) during the time period (408) by maintaining the state of the fourth signal (314) in the first state during the time period (408) from the time (407). For example, the display driving circuit (220) can initialize the anode electrode of the OLED (300) by providing the second initialization voltage (Vint2) to the anode electrode of the OLED (300) during the time period (408). For example, although the time period for maintaining the state of the third signal (313) in the second state and the time period for maintaining the state of the fourth signal (314) in the first state are the same, maintaining the state of the fourth signal (314) in the first state can be performed independently of maintaining the state of the third signal (313) in the second state. For example, the display driving circuit (220) can change the state of the fourth signal (314) from the first state to the second state at time (409).Providing the second initialization voltage (Vint2) to the anode electrode of the OLED (300) can be stopped by changing the state of the fourth signal (314) from the first state to the second state.

[0067] For example, the display driving circuit (220) can change the state of the first signal (311) transmitted to the gate electrode (G) of the fourth transistor (304) from the second state to the first state at time (404) (or timing (404)). For example, the display driving circuit (220) can initialize the gate electrode (G) of the first transistor (301) having a voltage according to the bias voltage (Vbias) (e.g., a voltage reduced by the threshold voltage from the bias voltage (Vbias)) based on providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) by maintaining the state of the first signal (311) in the first state for a time period (405) from time (404). As a non-limiting example, the time period (405) can be longer than the time period (402). As a non-limiting example, the time period (405) may be the same as the time period (402). As a non-limiting example, the time period (405) may be shorter than the time period (402). For example, the display driver circuit (220) may change the state of the first signal (311) from the first state to the second state at time (406) (or timing (406)). For example, providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) may be interrupted by changing the state of the first signal (311) from the first state to the second state.

[0068] For example, the display driving circuit (220) can change the state of the second signal (312) transmitted to the gate electrode (G) of the eighth transistor (308) from the second state to the first state at a time (410) (or timing (410)) after the time (406). For example, the display driving circuit (220) can electrically connect the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) via the eighth transistor (308) during the time period (411) by maintaining the state of the second signal (312) in the first state for a time period (411) from the time (410). For example, the display driving circuit (220) can change the state of the second signal (312) from the first state to the second state at a time period (412). Electrically connecting the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) through the eighth transistor (308) can be interrupted by changing the state of the second signal (312) from the first state to the second state.

[0069] For example, the display driving circuit (220) can change the state of the fifth signal (315) transmitted to the gate electrode (G) of the first transistor (301) from the first state to the second state at time (410). For example, the display driving circuit (220) can provide the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) initialized according to the first signal (311) in the first state transmitted during the time period (405) by maintaining the state of the fifth signal (315) in the second state during a time period (411) from time (410). For example, providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) can be performed (or executed) during the time period (411). For example, providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) may be performed during a time period (411) during which the state of the second signal (312) is maintained as the first state. For example, providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) may be performed while the gate electrode (G) of the first transistor (301) is electrically connected to the drain electrode (D) of the first transistor (301) according to the second signal (312) within the first state. For example, the display driving circuit (220) may change the state of the fifth signal (315) from the second state to the first state at time (412). Providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) may be stopped according to changing the state of the fifth signal (315) from the second state to the first state.

[0070] For example, the display driving circuit (220) can cause the OLED (300) to emit light for displaying an image acquired from at least one processor (210) by providing a current (e.g., current (320) of FIG. 3) according to a data voltage (Vdata) to the OLED (300). For example, the display driving circuit (220) can provide the current (320) to the OLED (300) by providing a light-emitting signal (316) to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within a time interval (490).

[0071] For example, the display driving circuit (220) can perform the second scan within the time period (450) before the light emitting signal (316) is transmitted to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within the time period (491). For example, the second scan can be performed while the data voltage (Vdata) provided within the time period (411) is maintained. For example, the time period (450) for performing the second scan can be included within the time period of the vertical synchronization signal that includes the time period (400) for performing the first scan. For example, the time period (450) for performing the second scan can also be included within the time period of the vertical synchronization signal that follows the time period of the vertical synchronization signal that includes the time period (400) for performing the first scan.

[0072] For example, the display driving circuit (220) can change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state at time (451) (or timing (451)) for the second scan. For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (452) by maintaining the state of the third signal (313) in the second state during a time period (452) from time (451). For example, the display driving circuit (220) can adjust the threshold voltage of the first transistor (301) by providing a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (452). As a non-limiting example, a bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel may be different from a bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel. As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) in the third sub-pixel to adjust the threshold voltage of the first transistor (301) in the third sub-pixel may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel and / or the bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel.For example, the display driving circuit (220) can change the state of the third signal (313) from the second state to the first state at time (453). Providing the bias voltage (Vbias) to the source electrode (S) of the first transistor (301) can be stopped by changing the state of the third signal (313) from the second state to the first state.

[0073] For example, the display driving circuit (220) can provide the OLED (300) with a current (e.g., current (320) of FIG. 3) according to the data voltage (Vdata) to the OLED (300) to emit light in order to maintain an image acquired from at least one processor (210). For example, the display driving circuit (220) can provide the current (320) to the OLED (300) by providing a light emitting signal (316) to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within a time interval (491).

[0074] As a non-limiting example, since changing the state of the third signal (313) is performed independently from changing the state of the fourth signal (314), the time for changing the state of the fourth signal (314) from the second state to the first state within the time interval (400) may be different from the time for changing the state of the third signal (313) from the first state to the second state within the time interval (400). For example, referring to FIG. 5, the display driving circuit (220) may change the state of the third signal (313) from the first state to the second state at time (407) and maintain the state of the third signal (313) in the second state for a time period (408) from time (407). For example, the display driving circuit (220) can change the state of the fourth signal (314) from the second state to the first state at a time (410) after the time (407) at which the state of the third signal (313) is changed from the first state to the second state, as illustrated in FIG. 5, and maintain the state of the fourth signal (314) in the first state for a time period (411) from the time (410).

[0075] It is merely exemplary that the time period during which the state of the fourth signal (314) is maintained in the first state in FIG. 5 does not overlap with the time period during which the state of the third signal (313) is maintained in the second state. The time period during which the state of the fourth signal (314) is maintained in the first state may at least partially overlap with the time period during which the state of the third signal (313) is maintained in the second state.

[0076] As a non-limiting example, changing the state of the third signal (313) from the first state to the second state during the first scan performed within the time interval (400) may be performed two or more times, and changing the state of the fourth signal (314) from the second state to the first state during the first scan performed within the time interval (400) may be performed two or more times. For example, because changing the state of the third signal (313) is independent of changing the state of the fourth signal (314), some of the time periods during which the state of the third signal (313) is maintained in the second state during the first scan performed within the time interval (400) may overlap some of the time periods during which the state of the fourth signal (313) is maintained in the first state during the first scan performed within the time interval (400). For example, since changing the state of the third signal (313) is independent of changing the state of the fourth signal (314), some other portion of the time periods during which the state of the third signal (313) is maintained in the second state during the first scan performed within the time interval (400) may not overlap with some other portion of the time periods during which the state of the fourth signal (313) is maintained in the first state during the first scan performed within the time interval (400).

[0077] For example, referring to FIG. 6, the display driving circuit (220) can perform the first scan within the time period (400) before the light emitting signal (316) is transmitted to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within the time period (490).

[0078] For example, the display driving circuit (220) can change the state of the first signal (311) transmitted to the gate electrode (G) of the fourth transistor (304) from the second state (e.g., low state) to the first state (e.g., high state) at time (601) (or timing (601)). For example, the display driving circuit (220) can initialize the gate electrode (G) of the first transistor (301) based on providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) by maintaining the state of the first signal (311) in the first state for a time period (602) from time (601). For example, the display driving circuit (220) can change the state of the first signal (311) from the first state to the second state at time (603) (or timing (603)). For example, providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) may be interrupted by changing the state of the first signal (311) from the first state to the second state.

[0079] For example, the display driving circuit (220) can change the state of the second signal (312) transmitted to the gate electrode (G) of the eighth transistor (308) from the second state to the first state at a time (607) (or timing (607)) after the time (603). For example, the display driving circuit (220) can electrically connect the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) via the eighth transistor (308) during the time period (608) by maintaining the state of the second signal (312) in the first state during a time period (608) from the time (607). For example, the display driving circuit (220) can change the state of the second signal (312) from the first state to the second state at a time period (609). Electrically connecting the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) through the eighth transistor (308) can be interrupted by changing the state of the second signal (312) from the first state to the second state.

[0080] For example, the display driving circuit (220) can change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state at time (607). For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (608) by maintaining the state of the third signal (313) in the second state for a time period (608) from time (607). For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (608) in which the state of the second signal (312) is maintained in the second state. For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) for a time period (608) so that current from the source electrode (S) of the first transistor (301) to the drain electrode (D) of the first transistor (301) flows to the capacitor (309) through the eighth transistor (308). For example, the display driving circuit (220) can adjust the threshold voltage of the first transistor (301) by providing the bias voltage (Vbias) to the source electrode (S) of the first transistor (301) for a time period (608). As a non-limiting example, a bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel may be different from a bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel.As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) in the third sub-pixel to adjust the threshold voltage of the first transistor (301) in the third sub-pixel may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel and / or the bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel. For example, the display driver circuit (220) may change the state of the third signal (313) from the second state to the first state at time (609). Providing a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) can be stopped by changing the state of the third signal (313) from the second state to the first state.

[0081] For example, the display driving circuit (220) can change the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state at time (607). For example, the time for changing the state of the third signal (313) from the first state to the second state and the time for changing the state of the fourth signal (314) from the second state to the first state are the same as time (607), but changing the state of the fourth signal (314) from the second state to the first state can be independent of changing the state of the third signal (313) from the first state to the second state. For example, the display driving circuit (220) can provide the second initialization voltage (Vint2) to the anode electrode of the OLED (300) during the time period (608) by maintaining the state of the fourth signal (314) in the first state during the time period (608) from the time (607). For example, the display driving circuit (220) can initialize the anode electrode of the OLED (300) by providing the second initialization voltage (Vint2) to the anode electrode of the OLED (300) during the time period (608). For example, although the time period for maintaining the state of the third signal (313) in the second state and the time period for maintaining the state of the fourth signal (314) in the first state are the same, maintaining the state of the fourth signal (314) in the first state can be independent of maintaining the state of the third signal (313) in the second state. For example, the display driving circuit (220) can change the state of the fourth signal (314) from the first state to the second state at time (609).Providing the second initialization voltage (Vint2) to the anode electrode of the OLED (300) can be stopped by changing the state of the fourth signal (314) from the first state to the second state.

[0082] For example, the display driving circuit (220) can change the state of the first signal (311) transmitted to the gate electrode (G) of the fourth transistor (304) from the second state to the first state at time (604) (or timing (604)). For example, the display driving circuit (220) can initialize the gate electrode (G) of the first transistor (301) having a voltage according to the bias voltage (Vbias) (e.g., a voltage reduced by the threshold voltage from the bias voltage (Vbias)) based on providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) by maintaining the state of the first signal (311) in the first state for a time period (605) from time (604). As a non-limiting example, the time period (605) can be longer than the time period (602). As a non-limiting example, the time period (605) may be the same as the time period (602). As a non-limiting example, the time period (605) may be shorter than the time period (602). For example, the display driver circuit (220) may change the state of the first signal (311) from the first state to the second state at time (606) (or timing (606)). For example, providing the first initialization voltage (Vint1) to the gate electrode (G) of the first transistor (301) may be interrupted by changing the state of the first signal (311) from the first state to the second state.

[0083] For example, the display driving circuit (220) can change the state of the second signal (312) transmitted to the gate electrode (G) of the eighth transistor (308) from the second state to the first state at a time (610) (or timing (610)) after the time (606). For example, the display driving circuit (220) can electrically connect the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) via the eighth transistor (308) during the time period (611) by maintaining the state of the second signal (312) in the first state for a time period (611) from the time (610). For example, the display driving circuit (220) can change the state of the second signal (312) from the first state to the second state at a time period (612). Electrically connecting the gate electrode (G) of the first transistor (301) to the drain electrode (D) of the first transistor (301) through the eighth transistor (308) can be interrupted by changing the state of the second signal (312) from the first state to the second state.

[0084] For example, the display driving circuit (220) can change the state of the fifth signal (315) transmitted to the gate electrode (G) of the first transistor (301) from the first state to the second state at time (610). For example, the display driving circuit (220) can provide the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) initialized according to the first signal (311) in the first state transmitted during the time period (605) by maintaining the state of the fifth signal (315) in the second state during a time period (611) from time (610). For example, providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) can be performed (or executed) during the time period (611). For example, providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) may be performed during a time period (611) during which the state of the second signal (312) is maintained as the first state. For example, providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) may be performed while the gate electrode (G) of the first transistor (301) is electrically connected to the drain electrode (D) of the first transistor (301) according to the second signal (312) within the first state. For example, the display driving circuit (220) may change the state of the fifth signal (315) from the second state to the first state at time (612). Providing the data voltage (Vdata) to the gate electrode (G) of the first transistor (301) may be stopped according to changing the state of the fifth signal (315) from the second state to the first state.

[0085] For example, the display driving circuit (220) can change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state at a time (613) after a time (612). For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (614) by maintaining the state of the third signal (313) in the second state during a time period (614) from the time (613). For example, the display driving circuit (220) can adjust the threshold voltage of the first transistor (301) by providing a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (614). As a non-limiting example, a bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel may be different from a bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel. As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) in the third sub-pixel to adjust the threshold voltage of the first transistor (301) in the third sub-pixel may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel and / or the bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel.As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) during the time period (614) may be the same as the bias voltage provided to the source electrode (S) of the first transistor (301) during the time period (608). As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) during the time period (614) may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) during the time period (608). For example, the display driving circuit (220) may change the state of the third signal (313) from the second state to the first state at time (615). Providing the bias voltage (Vbias) to the source electrode (S) of the first transistor (301) may be discontinued in response to changing the state of the third signal (313) from the second state to the first state.

[0086] For example, the display driving circuit (220) can change the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state at a time (616) after a time (615). For example, the time at which the state of the third signal (313) is changed from the first state to the second state may be before the time at which the state of the fourth signal (314) is changed from the second state to the first state. For example, the display driving circuit (220) can provide the second initialization voltage (Vint2) to the anode electrode of the OLED (300) during the time period (617) by maintaining the state of the fourth signal (314) in the first state during a time period (617) from the time (616). For example, the display driving circuit (220) can initialize the anode electrode of the OLED (300) by providing a second initialization voltage (Vint2) to the anode electrode of the OLED (300) during a time period (617). For example, the time period (614) during which the state of the third signal (313) is maintained in the second state may not overlap with the time period (617) during which the state of the fourth signal (314) is maintained in the first state. For example, the display driving circuit (220) can change the state of the fourth signal (314) from the first state to the second state at a time period (618). Providing the second initialization voltage (Vint2) to the anode electrode of the OLED (300) may be interrupted by changing the state of the fourth signal (314) from the first state to the second state.

[0087] For example, the display driving circuit (220) can cause the OLED (300) to emit light for displaying an image acquired from at least one processor (210) by providing a current (e.g., current (320) of FIG. 3) according to a data voltage (Vdata) to the OLED (300). For example, the display driving circuit (220) can provide the current (320) to the OLED (300) by providing a light-emitting signal (316) to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within a time interval (490).

[0088] For example, the display driving circuit (220) can perform the second scan within the time period (450) before the light emitting signal (316) is transmitted to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within the time period (491). For example, the second scan can be performed while the data voltage (Vdata) provided within the time period (611) is maintained. For example, the time period (450) for performing the second scan can be included within the time period of the vertical synchronization signal that includes the time period (400) for performing the first scan. For example, the time period (450) for performing the second scan can also be included within the time period of the vertical synchronization signal that follows the time period of the vertical synchronization signal that includes the time period (400) for performing the first scan.

[0089] For example, the display driving circuit (220) can change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state at time (651) (or timing (651)) for the second scan. For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (652) by maintaining the state of the third signal (313) in the second state during a time period (652) from time (651). For example, the display driving circuit (220) can adjust the threshold voltage of the first transistor (301) by providing a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (652). As a non-limiting example, a bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel may be different from a bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel. As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) in the third sub-pixel to adjust the threshold voltage of the first transistor (301) in the third sub-pixel may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel and / or the bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel.For example, the display driving circuit (220) can change the state of the third signal (313) from the second state to the first state at time (653). Providing the bias voltage (Vbias) to the source electrode (S) of the first transistor (301) can be stopped by changing the state of the third signal (313) from the second state to the first state.

[0090] For example, the display driving circuit (220) can change the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state at a time (654) (or timing (654)) after the time (653) for the second scan. For example, the display driving circuit (220) can provide a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (655) by maintaining the state of the third signal (313) in the second state during a time period (655) from the time (654). For example, the display driving circuit (220) can adjust the threshold voltage of the first transistor (301) by providing a bias voltage (Vbias) to the source electrode (S) of the first transistor (301) during the time period (655). As a non-limiting example, a bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel may be different from a bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel. As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) in the third sub-pixel to adjust the threshold voltage of the first transistor (301) in the third sub-pixel may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) in the first sub-pixel to adjust the threshold voltage of the first transistor (301) in the first sub-pixel and / or the bias voltage provided to the source electrode (S) of the first transistor (301) in the second sub-pixel to adjust the threshold voltage of the first transistor (301) in the second sub-pixel.As a non-limiting example, the bias voltage provided to the source electrode (S) of the first transistor (301) during a time period (652) may be different from the bias voltage provided to the source electrode (S) of the first transistor (301) during a time period (655). For example, the display driving circuit (220) may change the state of the third signal (313) from the second state to the first state at a time period (656). Providing the bias voltage (Vbias) to the source electrode (S) of the first transistor (301) may be stopped in response to changing the state of the third signal (313) from the second state to the first state.

[0091] For example, the display driving circuit (220) can provide the OLED (300) with a current (e.g., current (320) of FIG. 3) according to the data voltage (Vdata) to the OLED (300) to emit light in order to maintain an image acquired from at least one processor (210). For example, the display driving circuit (220) can provide the current (320) to the OLED (300) by providing a light emitting signal (316) to each of the gate electrode (G) of the fifth transistor (305) and the gate electrode (G) of the sixth transistor (306) within a time interval (491).

[0092] As exemplified above, the display driving circuit (220) can reduce the time until the luminance of light emitted from the OLED (300) reaches the target luminance by performing the change of the state of the third signal (313) from the first state to the second state more frequently than the change of the state of the fourth signal (314) from the second state to the first state. This reduction in time is described and exemplified in more detail with reference to FIG. 7.

[0093] FIG. 7 is a chart showing how brightness changes depending on controlling a third transistor electrically connected to the first transistor independently of controlling a second transistor electrically connected to the first transistor.

[0094] Referring to FIG. 7, the horizontal axis of the chart (700) and the horizontal axis of the chart (750) represent time, and the vertical axis of the chart (700) and the vertical axis of the chart (750) represent the luminance of light emitted from the OLED (300). A line (710) (or curve (710)) in the chart (700) represents a change in the luminance of light emitted from the OLED (300) when the number of times the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) changes from the first state to the second state is greater than the number of times the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) changes from the second state to the first state. A line (760) (or curve (760)) in the chart (750) represents a change in the brightness of light emitted from the OLED (300) when the number of times the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) changes from the first state to the second state is equal to the number of times the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) changes from the second state to the first state.

[0095] Line (710) represents a change in the brightness of light emitted from the OLED (300) when the OLED (300) is illuminated four times according to a control that changes the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state more frequently than changes the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state. Line (760) represents a change in the brightness of light emitted from the OLED (300) when the OLED (300) is illuminated four times according to a control performed in conjunction with changing the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state and changing the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state.

[0096] A line (710) within a time interval (711) corresponding to the first emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (721) has elapsed, and a line (760) within a time interval (761) corresponding to the first emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (771) has elapsed. As a non-limiting example, the time period (721) may be substantially equal to the time period (771).

[0097] A line (710) within a time interval (712) corresponding to the second emission of the OLED (300) after the first emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (722) shorter than the time period (721) has elapsed, and a line (760) within a time interval (762) corresponding to the second emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (772) substantially equal to the time period (771) has elapsed. For example, since the time period (722) is shorter than the time period (772), the control that changes the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state more frequently than the control that changes the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state can enhance the quality of an image displayed at a relatively low brightness on the display panel (240).

[0098] A line (710) within a time interval (713) corresponding to the third emission of the OLED (300) after the second emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (723) shorter than the time period (721) has elapsed, and a line (760) within a time interval (763) corresponding to the third emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (773) substantially equal to the time period (771) has elapsed. For example, since the time period (723) is shorter than the time period (773), the control that changes the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state more frequently than the control that changes the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state can enhance the quality of an image displayed at a relatively low brightness on the display panel (240).

[0099] A line (710) within a time interval (714) corresponding to the fourth emission of the OLED (300) after the third emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (724) shorter than the time period (721) has elapsed, and a line (760) within a time interval (764) corresponding to the fourth emission of the OLED (300) indicates that the luminance of light from the OLED (300) reaches the target luminance (T) after a time period (774) substantially equal to the time period (771) has elapsed. For example, since the time period (724) is shorter than the time period (774), the control that changes the state of the third signal (313) transmitted to the gate electrode (G) of the second transistor (302) from the first state to the second state more frequently than that that changes the state of the fourth signal (314) transmitted to the gate electrode (G) of the third transistor (303) from the second state to the first state can enhance the quality of an image displayed at a relatively low brightness on the display panel (240).

[0100] The operations exemplified through the above description may be executed or performed within the electronic device (801) described with reference to FIGS. 8 and 9.

[0101] FIG. 8 is a block diagram of an electronic device (801) within a network environment (800) according to various embodiments. Referring to FIG. 8, in the network environment (800), the electronic device (801) may communicate with the electronic device (802) via a first network (898) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (804) or the server (808) via a second network (899) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (801) may communicate with the electronic device (804) via the server (808). According to one embodiment, the electronic device (801) may include a processor (820), a memory (830), an input module (850), an audio output module (855), a display module (860), an audio module (870), a sensor module (876), an interface (877), a connection terminal (878), a haptic module (879), a camera module (880), a power management module (888), a battery (889), a communication module (890), a subscriber identification module (896), or an antenna module (897). In some embodiments, the electronic device (801) may omit at least one of these components (e.g., the connection terminal (878)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (876), the camera module (880), or the antenna module (897)) may be integrated into one component (e.g., the display module (860)).

[0102] The processor (820) may, for example, execute software (e.g., a program (840)) to control at least one other component (e.g., a hardware or software component) of the electronic device (801) connected to the processor (820) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (820) may store commands or data received from other components (e.g., a sensor module (876) or a communication module (890)) in a volatile memory (832), process the commands or data stored in the volatile memory (832), and store result data in a non-volatile memory (834). According to one embodiment, the processor (820) may include a main processor (821) (e.g., a central processing unit or an application processor) or an auxiliary processor (823) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (821). For example, when the electronic device (801) includes the main processor (821) and the auxiliary processor (823), the auxiliary processor (823) may be configured to use less power than the main processor (821) or to be specialized for a given function. The auxiliary processor (823) may be implemented separately from the main processor (821) or as a part thereof.

[0103] The auxiliary processor (823) may control at least a portion of functions or states associated with at least one component (e.g., a display module (860), a sensor module (876), or a communication module (890)) of the electronic device (801), for example, on behalf of the main processor (821) while the main processor (821) is in an inactive (e.g., sleep) state, or together with the main processor (821) while the main processor (821) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (823) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (880) or a communication module (890)). In one embodiment, the auxiliary processor (823) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (801) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (808)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0104] The memory (830) can store various data used by at least one component (e.g., the processor (820) or the sensor module (876)) of the electronic device (801). The data can include, for example, software (e.g., the program (840)) and input data or output data for commands related thereto. The memory (830) can include volatile memory (832) or non-volatile memory (834).

[0105] The program (840) may be stored as software in the memory (830) and may include, for example, an operating system (842), middleware (844), or an application (846).

[0106] The input module (850) can receive commands or data to be used in a component of the electronic device (801) (e.g., a processor (820)) from an external source (e.g., a user) of the electronic device (801). The input module (850) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0107] The audio output module (855) can output audio signals to the outside of the electronic device (801). The audio output module (855) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0108] The display module (860) can visually provide information to an external party (e.g., a user) of the electronic device (801). The display module (860) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (860) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0109] The audio module (870) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (870) can acquire sound through the input module (850), output sound through the sound output module (855), or an external electronic device (e.g., electronic device (802)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (801).

[0110] The sensor module (876) can detect the operating status (e.g., power or temperature) of the electronic device (801) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (876) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0111] The interface (877) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (801) with an external electronic device (e.g., the electronic device (802)). In one embodiment, the interface (877) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0112] The connection terminal (878) may include a connector through which the electronic device (801) may be physically connected to an external electronic device (e.g., the electronic device (802)). In one embodiment, the connection terminal (878) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0113] The haptic module (879) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (879) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0114] The camera module (880) can capture still images and videos. According to one embodiment, the camera module (880) may include one or more lenses, image sensors, image signal processors, or flashes.

[0115] The power management module (888) can manage the power supplied to the electronic device (801). According to one embodiment, the power management module (888) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0116] A battery (889) may power at least one component of the electronic device (801). In one embodiment, the battery (889) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0117] The communication module (890) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (801) and an external electronic device (e.g., electronic device (802), electronic device (804), or server (808)), and the performance of communication through the established communication channel. The communication module (890) may operate independently from the processor (820) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (890) may include a wireless communication module (892) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (894) (e.g., a local area network (LAN) communication module, or a power line communication module). Any of these communication modules may communicate with an external electronic device (804) via a first network (898) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (899) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (892) may use subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (896) to verify or authenticate the electronic device (801) within a communication network such as the first network (898) or the second network (899).

[0118] The wireless communication module (892) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimizing terminal power and connecting multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (892) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (892) may support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (892) may support various requirements specified in the electronic device (801), an external electronic device (e.g., the electronic device (804)), or a network system (e.g., the second network (899)). According to one embodiment, the wireless communication module (892) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0119] The antenna module (897) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (897) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (897) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (898) or the second network (899), may be selected from the plurality of antennas by, for example, the communication module (890). A signal or power may be transmitted or received between the communication module (890) and an external electronic device via the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (897).

[0120] According to various embodiments, the antenna module (897) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band.

[0121] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0122] According to one embodiment, commands or data may be transmitted or received between the electronic device (801) and an external electronic device (804) via a server (808) connected to a second network (899). Each of the external electronic devices (802 or 804) may be the same or a different type of device as the electronic device (801). According to one embodiment, all or part of the operations executed in the electronic device (801) may be executed in one or more of the external electronic devices (802, 804, or 808). For example, when the electronic device (801) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (801) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (801). The electronic device (801) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (801) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (804) may include an Internet of Things (IoT) device. The server (808) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (804) or the server (808) may be included in the second network (899).The electronic device (801) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0123] FIG. 9 is a block diagram (900) of a display module (860) according to various embodiments. Referring to FIG. 9, the display module (860) may include a display (910) and a display driver IC (DDI) (930) for controlling the display (910). The DDI (930) may include an interface module (931), a memory (933) (e.g., a buffer memory), an image processing module (935), or a mapping module (937). The DDI (930) may receive image information including, for example, image data or an image control signal corresponding to a command for controlling the image data, from another component of the electronic device (801) through the interface module (931). For example, according to one embodiment, image information may be received from a processor (820) (e.g., a main processor (821) (e.g., an application processor) or an auxiliary processor (823) (e.g., a graphics processing unit) that operates independently of the function of the main processor (821). The DDI (930) may communicate with a touch circuit (950) or a sensor module (876) through the interface module (931). In addition, the DDI (930) may store at least a part of the received image information in the memory (933), for example, in units of frames. The image processing module (935) may, for example, perform preprocessing or postprocessing (e.g., resolution, brightness, or size adjustment) on at least a part of the image data based at least on the characteristics of the image data or the characteristics of the display (910). The mapping module (937) may generate a voltage value or a current value corresponding to the image data that has been preprocessed or postprocessed through the image processing module (935). According to one embodiment, the voltage The generation of the values ​​or current values ​​may be performed based at least in part on properties of the pixels of the display (910), for example, the arrangement of the pixels (RGB stripe or pentile structure), or the size of each of the sub-pixels.At least some pixels of the display (910) may be driven based at least in part on, for example, the voltage value or current value, so that visual information (e.g., text, an image, or an icon) corresponding to the image data may be displayed through the display (910).

[0124] According to one embodiment, the display module (860) may further include a touch circuit (950). The touch circuit (950) may include a touch sensor (951) and a touch sensor IC (953) for controlling the same. The touch sensor IC (953) may control the touch sensor (951) to detect, for example, a touch input or a hovering input for a specific location of the display (910). For example, the touch sensor IC (953) may detect a touch input or a hovering input by measuring a change in a signal (e.g., voltage, light amount, resistance, or charge amount) for a specific location of the display (910). The touch sensor IC (953) may provide information (e.g., location, area, pressure, or time) regarding the detected touch input or hovering input to the processor (820). According to one embodiment, at least a portion of the touch circuit (950) (e.g., touch sensor IC (953)) may be included as part of the display driver IC (930), or as part of the display (910), or as part of another component (e.g., auxiliary processor (823)) disposed external to the display module (860).

[0125] According to one embodiment, the display module (860) may further include at least one sensor (e.g., a fingerprint sensor, an iris sensor, a pressure sensor, or an illuminance sensor) of the sensor module (876), or a control circuit therefor. In this case, the at least one sensor or the control circuit therefor may be embedded in a part of the display module (860) (e.g., the display (910) or the DDI (930)) or a part of the touch circuit (950). For example, if the sensor module (876) embedded in the display module (860) includes a biometric sensor (e.g., a fingerprint sensor), the biometric sensor may obtain biometric information (e.g., a fingerprint image) associated with a touch input through a part of the display (910). As another example, if the sensor module (876) embedded in the display module (860) includes a pressure sensor, the pressure sensor may obtain pressure information associated with a touch input through a part or the entire area of ​​the display (910). According to one embodiment, the touch sensor (951) or sensor module (876) may be positioned between pixels of a pixel layer of the display (910), or above or below the pixel layer.

[0126] The technical problems to be achieved in the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by a person having ordinary knowledge in the technical field to which the present disclosure pertains.

[0127] As described above, an electronic device (e.g., electronic device (200)) may include a display driving circuit (e.g., display driving circuit (220)), a display panel (e.g., display panel (240)) including pixels, a first gate driver circuit, and a second gate driver circuit. Each of the pixels may include sub-pixels. Each of the above sub-pixels may include a light-emitting element (e.g., OLED (300)), a storage capacitor (e.g., capacitor (309)) configured to store a data voltage, a gate electrode electrically connected to the storage capacitor, a source electrode, and a drain electrode electrically connectable to an anode electrode of the light-emitting element, and a first transistor (e.g., first transistor (301)) configured to obtain, generate, or apply a current to be provided to the light-emitting element according to the data voltage stored in the storage capacitor, a second transistor (e.g., second transistor (302)) including a drain electrode electrically connected to the source electrode of the first transistor, and a third transistor (e.g., third transistor (303)) including a source electrode electrically connected to the anode electrode of the light-emitting element. The display driving circuit may be configured to adjust a threshold voltage of the first transistor by providing a bias voltage (e.g., a bias voltage (Vbias)) to the source electrode of the first transistor based on controlling the first gate driver circuit to change the state of a first signal (e.g., a third signal (313)) transmitted to the gate electrode of the second transistor.The display driving circuit may be configured to initialize the anode electrode of the light-emitting element by providing an initialization voltage (e.g., a second initialization voltage (Vint2)) to the anode electrode of the light-emitting element based on controlling the second gate driver circuit to change the state of a second signal (e.g., a fourth signal (314)) transmitted to the gate electrode of the third transistor. The sub-pixels may include a first sub-pixel configured to emit light with a first color and a second sub-pixel configured to emit light with a second color. A first bias voltage provided to the source electrode of the first transistor in the first sub-pixel according to the change in the state of the first signal may be different from a second bias voltage provided to the source electrode of the first transistor in the second sub-pixel according to the change in the state of the first signal.

[0128] For example, controlling the first gate driver circuit to change the state of the first signal can be performed independently from controlling the second gate driver circuit to change the state of the second signal.

[0129] For example, the display driving circuit may be configured to adjust the threshold voltage of the first transistor by changing the state of the first signal from the first state to the second state, and to initialize the anode electrode of the light-emitting element by changing the state of the second signal from the second state to the first state.

[0130] For example, the second transistor may include a PMOS (P-channel metal oxide semiconductor) transistor. For example, the third transistor may include an NMOS (N-channel metal oxide semiconductor) transistor.

[0131] For example, changing the state of the first signal may be performed more frequently than changing the state of the second signal.

[0132] For example, the display driving circuit may be configured to change the state of the first signal and change the state of the second signal while performing a first scan, which includes initializing the gate terminal of the first transistor, providing the data voltage to the initialized gate terminal of the first transistor, and providing current to the light emitting element through the first transistor having the provided data voltage at the gate terminal. For example, the display driving circuit may be configured to change the state of the first signal and skip changing the state of the second signal while performing a second scan, which includes providing current to the light emitting element through the first transistor while the data voltage according to the first scan is maintained by skipping initializing the gate terminal of the first transistor.

[0133] For example, a first time duration during which the first signal is in the second state as a result of changing the state of the first signal while performing the first scan may at least partially overlap with a second time duration during which the second signal is in the first state as a result of changing the state of the second signal while performing the first scan.

[0134] For example, the length of the first time period may be different from the length of the second time period.

[0135] For example, the length of the first time period may be the same as the length of the second time period.

[0136] For example, changing the state of the second signal while performing the first scan may be performed after changing the state of the first signal while performing the first scan.

[0137] For example, changing the state of the first signal may be performed N times (e.g., N is a natural number greater than 1) while performing the first scan.

[0138] For example, changing the state of the second signal can be performed M times (e.g., M is a natural number greater than or equal to 1 and less than N) while performing the first scan.

[0139] For example, changing the state of the first signal can be performed N times (N is a natural number greater than 1) while performing the second scan. For example, changing the state of the second signal can be performed M times (M is a natural number greater than or equal to 1 and less than N) while performing the second scan.

[0140] For example, the first scan and the second scan can be performed within the time interval of one vertical synchronization signal.

[0141] For example, the sub-pixels may include a third sub-pixel configured to emit light in a third color. For example, the first bias voltage provided to the source electrode of the first transistor in the first sub-pixel in response to the change in the state of the first signal may be different from the third bias voltage provided to the source electrode of the first transistor in the third sub-pixel in response to the change in the state of the first signal. For example, the second bias voltage provided to the source electrode of the first transistor in the second sub-pixel in response to the change in the state of the first signal may be different from the third bias voltage provided to the source electrode of the first transistor in the third sub-pixel in response to the change in the state of the first signal.

[0142] For example, the first color may be red. For example, the second color may be green. For example, the third color may be blue. For example, the third bias voltage may be higher than the first bias voltage and the second bias voltage. For example, the first bias voltage may be higher than the second bias voltage.

[0143] For example, each of the sub-pixels may include a fourth transistor (e.g., a fifth transistor (305), or an operation control transistor) including a gate electrode configured to obtain a light emission signal, a source electrode electrically connected to a driving voltage wire transmitting a driving voltage, and a drain electrode electrically connected to the source electrode of the first transistor, and a fifth transistor (e.g., a sixth transistor (306), or an operation control transistor) including a gate electrode configured to obtain the light emission signal, a source electrode electrically connected to the drain electrode of the first transistor, and a drain electrode electrically connected to the anode electrode of the light emitting element. For example, a node electrically connecting the source electrode of the first transistor and the drain electrode of the second transistor may also be electrically connected to the drain electrode of the fourth transistor. For example, a node electrically connecting the drain electrode of the fifth transistor and the anode electrode of the light emitting element may also be electrically connected to the source electrode of the third transistor.

[0144] For example, the display driving circuit may be configured to provide the current obtained by the first transistor to the light-emitting element by providing the light-emitting signal to the gate electrode of the fourth transistor and the gate electrode of the fifth transistor.

[0145] For example, each of the sub-pixels may include a first electrical path connected to the gate electrode of the second transistor for the first signal, and a second electrical path connected to the gate electrode of the third transistor for the second signal. For example, the second electrical path may be electrically isolated from the first electrical path.

[0146] For example, the light-emitting element may include an OLED (organic light emitting diode).

[0147] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains.

[0148] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0149] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0150] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0151] Various embodiments of the present document may be implemented as software (e.g., a program (840)) including one or more instructions stored in a storage medium (e.g., an internal memory (836) or an external memory (838)) readable by a machine (e.g., an electronic device (801)). For example, a processor (e.g., a processor (820)) of the machine (e.g., an electronic device (801)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0152] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as included in a computer program product. The computer program product may be traded as a commodity between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0153] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In electronic devices, display driving circuit; A display panel containing pixels; first gate driver circuit; and Includes a second gate driver circuit, Each of the above pixels, Contains subpixels, Each of the above sub-pixels, light emitting element; A storage capacitor configured to store a data voltage; A first transistor comprising a gate electrode electrically connected to the storage capacitor, a source electrode, and a drain electrode electrically connectable to an anode electrode of the light-emitting element, and configured to obtain a current to be provided to the light-emitting element according to the data voltage stored in the storage capacitor; a second transistor including a drain electrode electrically connected to the source electrode of the first transistor; and A third transistor including a source electrode electrically connected to the anode electrode of the light emitting element, The above display driving circuit, Adjusting the threshold voltage of the first transistor by providing a bias voltage to the source electrode of the first transistor based on controlling the first gate driver circuit to change the state of the first signal transmitted to the gate electrode of the second transistor; and It is configured to initialize the anode electrode of the light-emitting element by providing an initialization voltage to the anode electrode of the light-emitting element based on controlling the second gate driver circuit to change the state of the second signal transmitted to the gate electrode of the third transistor, The above sub-pixels are, a first subpixel configured to emit light of a first color; and comprising a second subpixel configured to emit light of a second color, and The first bias voltage provided to the source electrode of the first transistor in the first sub-pixel according to the change in the state of the first signal is, A second bias voltage different from the second bias voltage provided to the source electrode of the first transistor in the second sub-pixel according to the change in the state of the first signal, Electronic devices.

2. In claim 1, controlling the first gate driver circuit to change the state of the first signal comprises: independently performed to control the second gate driver circuit to change the state of the second signal; Electronic devices.

3. In claim 1 or 2, the display driving circuit, Adjusting the threshold voltage of the first transistor by changing the state of the first signal from the first state to the second state; and configured to initialize the anode electrode of the light-emitting element by changing the state of the second signal from the second state to the first state, Electronic devices.

4. In any one of claims 1 to 3, the second transistor, Includes a PMOS (P-channel metal oxide semiconductor) transistor, and The third transistor is, Containing an NMOS (N-channel metal oxide semiconductor) transistor, Electronic devices.

5. In any one of claims 1 to 4, changing the state of the first signal comprises: which is performed more frequently than changing the state of the second signal, Electronic devices.

6. In any one of claims 1 to 5, the display driving circuit, During a first scan, which includes initializing the gate terminal of the first transistor, providing the data voltage to the initialized gate terminal of the first transistor, and providing current to the light emitting element through the first transistor having the provided data voltage at the gate terminal: Changing the state of the first signal, and changing the state of the second signal; and During a second scan, which includes providing current to the light emitting element through the first transistor while the data voltage according to the first scan is maintained by skipping initializing the gate terminal of the first transistor: Changing the state of the first signal, and To skip changing the state of the second signal, Composed of, Electronic devices.

7. In claim 6, the first time duration during which the first signal is in the second state by changing the state of the first signal while performing the first scan is wherein the second signal changes the state of the second signal while performing the first scan, thereby at least partially overlapping the second time period during which the second signal is within the first state; Electronic devices.

8. In claim 7, the length of the first time period is: Different from the length of the second time period above, Electronic devices.

9. In claim 7, the length of the first time period is: Same as the length of the second time period above, Electronic devices.

10. In claim 6, changing the state of the second signal while performing the first scan comprises: which is performed after changing the state of the first signal while performing the first scan, Electronic devices.

11. In claim 6, changing the state of the first signal comprises: which is performed N times while performing the above first scan, Electronic devices: N is a natural number greater than 1.

12. In claim 11, changing the state of the second signal comprises: M times performed while performing the above first scan, Electronic devices: M is a natural number greater than or equal to 1 and less than N.

13. In claim 6, changing the state of the first signal comprises: During the above second scan, which is performed N times, Electronic devices: N is a natural number greater than 1.

14. In claim 13, changing the state of the second signal comprises: M times performed while performing the above second scan, Electronic devices: M is a natural number greater than or equal to 1 and less than N.

15. In claim 6, the first scan and the second scan are, performed within the time interval of one vertical synchronization signal, Electronic devices.

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