Organic light emitting display device and driving method of organic light emitting display device

Abstract

An organic light emitting display device and a driving method thereof are provided. The organic light emitting display device includes a display panel having a plurality of pixels and a panel driving part driving the display panel. The panel driving part drives the display panel at a frame frequency corresponding to 1 / N of a light emitting frequency so that each frame interval becomes N times of a light emitting period (N is an integer of 2 or more), gradually decreases the frame frequency of the display panel in a case where input image data is not received, and gradually increases the frame frequency of the display panel in a case where input image data is received. Accordingly, even if the frame frequency of the input image data is changed, a change in brightness due to the change in the frame frequency is not recognized.

Description

Technical Field

[0001] This invention relates to display devices, and more particularly, to an organic light-emitting display device supporting an adaptive synchronization mode and a driving method for the organic light-emitting display device. Background Technology

[0002] Typically, display devices such as OLEDs display images at a constant frame rate (or constant frame frequency) of 60Hz or higher. However, the rendering frame rate generated by the main processor (e.g., GPU (Graphics Processing Unit) or graphics card) that provides frame data to the OLED may be inconsistent with the frame rate (or frame frequency) of the OLED. In particular, this inconsistency can become severe when providing frame data for game images that the main processor is executing complex rendering on the OLED. Due to this inconsistency, phenomena such as tearing of borders may occur on the images displayed on the OLED.

[0003] In recent years, adaptive synchronization modes (e.g., Free-Sync, G-Sync, Q-Sync, etc.) have been developed to provide frame data to OLED display devices at a variable frame rate (or variable frame frequency) to prevent tearing. OLED display devices supporting the adaptive synchronization mode display images synchronously with the variable frame rate, thereby preventing tearing.

[0004] However, when the adaptive synchronization mode is applied to an organic light-emitting display device that employs a pulse driving method that periodically emits or does not emit light from organic light-emitting diodes, the emission duty ratio is different in each frame interval, which may cause flicker and may detect changes in brightness caused by changes in frame rate. Summary of the Invention

[0005] One object of the present invention is to provide an organic light-emitting display device that can improve image quality in an adaptive synchronization mode.

[0006] Another object of the present invention is to provide a driving method for an organic light-emitting display device that can improve image quality in an adaptive synchronization mode.

[0007] However, the problems to be solved by the present invention are not limited to those mentioned above, and various extensions can be made without departing from the scope of the ideas and fields of the present invention.

[0008] To achieve an objective of the present invention, the organic light-emitting display device according to various embodiments of the present invention includes: a display panel including a plurality of pixels; and a panel driving unit that drives the display panel. Specifically, the panel driving unit drives the display panel at a frame rate corresponding to 1 / N of the emission frequency, such that each frame interval becomes N times the emission period (N is an integer greater than or equal to 2). When no input image data is received, the frame rate of the display panel is progressively reduced; and when the input image data is received, the frame rate of the display panel is progressively increased.

[0009] In one embodiment, the panel driving unit may progressively increase the number of light emission cycles within the frame interval when not receiving the input image data, and progressively decrease the number of light emission cycles within the frame interval when receiving the input image data.

[0010] In one embodiment, if the panel driving unit does not receive the input image data within the planned frame time for the current frame interval, it may increase the planned frame time for the next frame interval by M light emission cycles (M is an integer greater than or equal to 1) compared to the planned frame time for the current frame interval, and if the input image data is received within the planned frame time for the current frame interval, it may decrease the planned frame time for the next frame interval by K light emission cycles (K is an integer greater than or equal to 1) compared to the planned frame time for the current frame interval.

[0011] In one embodiment, if the frame rate of the display panel is changed, the panel driving unit may change the gamma combination used to generate the data voltage provided to the plurality of pixels.

[0012] In one embodiment, the panel driving unit may determine the planned frame time in the next frame interval based on the planned frame time in the current frame interval and whether the input image data is received in the current frame interval, and determine the parameter combination in the next frame interval based on the planned frame time in the next frame interval.

[0013] In one embodiment, the panel driving unit may store multiple parameter combinations corresponding to multiple frame time ranges, each of the multiple parameter combinations including: a gamma combination, representing a gamma reference voltage for generating data voltages provided to the multiple pixels; a reduction step parameter, representing the number of light emission cycles increased when the frame rate decreases; an increase step parameter, representing the number of light emission cycles decreased when the frame rate increases; a reduction hold frame parameter, representing the number of frame intervals with the reduced frame rate when the frame rate decreases; and an increase hold frame parameter, representing the number of frame intervals with the increased frame rate when the frame rate increases.

[0014] In one embodiment, if the input image data is not received in the current frame interval, the current frame interval ends when the time in the current frame interval becomes the planned frame time in the current frame interval. The planned frame time in the next frame interval is calculated by adding the product of the emission period and the reduction step parameter in the current frame interval to the planned frame time in the current frame interval. The parameter combination in the next frame interval is determined to be the parameter combination that corresponds to the planned frame time in the next frame interval among the plurality of parameter combinations.

[0015] In one embodiment, the panel driving unit may further store a maximum frame parameter corresponding to the maximum frame time. If the time for which the product of the emission period and the reduction step parameter in the current frame interval is added to the planned frame time in the current frame interval is greater than the maximum frame time, the planned frame time in the next frame interval is determined to be the maximum frame time.

[0016] In one embodiment, when the input image data is received in the current frame interval, the end frame time of the current frame interval can be calculated by subtracting the product of the emission period and the addition step parameter in the current frame interval from the planned frame time in the current frame interval. The current frame interval ends when the time in the current frame interval becomes the end frame time of the current frame interval. The planned frame time in the next frame interval is determined to be the end frame time of the current frame interval, and the parameter combination in the next frame interval is determined to be the parameter combination among the plurality of parameter combinations that corresponds to the planned frame time in the next frame interval.

[0017] In one embodiment, the panel driving unit may further store a minimum frame parameter corresponding to the minimum frame time. If the time from the planned frame time in the current frame interval minus the product of the emission period and the addition step parameter in the current frame interval is less than the minimum frame time, the planned frame time in the next frame interval is determined as the minimum frame time.

[0018] In one embodiment, the panel driving unit may further store critical frame parameters corresponding to the frame time critical value. If the time from the planned frame time in the current frame interval minus the product of the light emission period and the increase step parameter in the current frame interval is greater than the frame time critical value, the planned frame time in the next frame interval is determined as the minimum frame time.

[0019] In one embodiment, the panel driver unit may store game mode parameters indicating whether the working mode is game mode and maximum frame parameters corresponding to the maximum frame time. When the game mode parameters indicate the game mode, the planned frame time in each frame interval is determined to be the maximum frame time. The current frame interval ends when the input image data is received, and the parameter combination in the next frame interval is determined based on the end frame time of the current frame interval.

[0020] In order to achieve other objectives of the present invention, in the driving method of the organic light-emitting display device according to various embodiments of the present invention, the display panel of the organic light-emitting display device is driven at a frame rate corresponding to 1 / N of the light emission frequency, such that each frame interval becomes N times the light emission period (N is an integer greater than 2), the frame rate of the display panel is gradually reduced when no input image data is received, and the frame rate of the display panel is gradually increased when the input image data is received.

[0021] In one embodiment, the number of light emission cycles within the frame interval may be gradually increased without receiving the input image data, thereby gradually reducing the frame rate of the display panel, and the number of light emission cycles within the frame interval may be gradually reduced while receiving the input image data, thereby gradually increasing the frame rate of the display panel.

[0022] In one embodiment, if the input image data is not received within the planned frame time for the current frame interval, the planned frame time for the next frame interval is increased by M light emission cycles (M is an integer greater than or equal to 1) compared to the planned frame time for the current frame interval, thereby gradually reducing the frame rate of the display panel. Conversely, if the input image data is received within the planned frame time for the current frame interval, the planned frame time for the next frame interval is decreased by K light emission cycles (K is an integer greater than or equal to 1) compared to the planned frame time for the current frame interval, thereby gradually increasing the frame rate of the display panel.

[0023] In one embodiment, if the frame rate of the display panel is changed, the gamma combination used to generate the data voltage provided to the plurality of pixels may be changed.

[0024] In one embodiment, to gradually reduce the frame rate of the display panel, when no input image data is received in the current frame interval, the current frame interval ends when the time in the current frame interval becomes the planned frame time in the current frame interval. The planned frame time in the next frame interval is calculated by adding the product of the light emission period and the reduction step parameter in the current frame interval to the planned frame time in the current frame interval, and the parameter combination in the next frame interval is determined based on the planned frame time in the next frame interval.

[0025] In one embodiment, to gradually increase the frame rate of the display panel, when the input image data is received in the current frame interval, the end frame time of the current frame interval is calculated by subtracting the product of the emission period and the increase step parameter in the current frame interval from the planned frame time in the current frame interval. The current frame interval ends when the time in the current frame interval becomes the end frame time of the current frame interval. The planned frame time in the next frame interval is determined as the end frame time of the current frame interval, and the parameter combination in the next frame interval is determined based on the planned frame time in the next frame interval.

[0026] In one embodiment, to determine the planned frame time in the next frame interval, if the time obtained by subtracting the product of the emission period and the addition step parameter in the current frame interval from the planned frame time in the current frame interval is less than or equal to a frame time threshold, the planned frame time in the next frame interval is determined to be the end frame time of the current frame interval; if the time obtained by subtracting the product of the emission period and the addition step parameter in the current frame interval from the planned frame time in the current frame interval is greater than the frame time threshold, the planned frame time in the next frame interval is determined to be the minimum frame time.

[0027] In one embodiment, it may be possible to determine whether the game mode parameter represents a game mode. If the game mode parameter represents the game mode, the planned frame time in each frame interval is determined as the maximum frame time. When the input image data is received, the current frame interval ends, and the parameter combination in the next frame interval is determined based on the end frame time in the current frame interval.

[0028] (Invention Effects)

[0029] In the organic light-emitting display device and its driving method according to various embodiments of the present invention, the display panel is driven at a frame rate corresponding to 1 / N of the emission frequency, such that each frame interval becomes N times the emission period (N is an integer greater than 2). Therefore, even when receiving input image data at a variable frame rate (or variable frame frequency), the emission duty cycle in each frame interval can be kept constant, preventing flicker.

[0030] Furthermore, in the organic light-emitting display device and its driving method according to various embodiments of the present invention, the frame rate of the display panel can be gradually reduced when no input image data is received, and the frame rate of the display panel can be gradually increased when the input image data is received. Therefore, even if the frame rate (or frame frequency) of the input image data changes drastically, the change in brightness caused by the change in frame rate will not be detected.

[0031] However, the effects of the present invention are not limited to those mentioned above, and various extensions can be made without departing from the scope of the concept and field of the present invention. Attached Figure Description

[0032] Figure 1 This is a block diagram illustrating the organic light-emitting display device according to various embodiments of the present invention.

[0033] Figure 2a This is a timing diagram representing the frame intervals of organic light-emitting display devices in the prior art. Figure 2b This is a timing diagram showing the frame intervals of the organic light-emitting display device according to various embodiments of the present invention.

[0034] Figure 3 This is a diagram illustrating an example of a combination of parameters stored in an organic light-emitting display device according to various embodiments of the present invention.

[0035] Figure 4 This is a sequence diagram illustrating the driving methods of the organic light-emitting display device according to various embodiments of the present invention.

[0036] Figure 5 This is a sequence diagram illustrating a driving method for an organic light-emitting display device according to an embodiment of the present invention.

[0037] Figure 6 This is a diagram illustrating an example of a combination of parameters.

[0038] Figure 7 This indicates the use of [the system] without receiving input image data. Figure 6 A timing diagram of an example of a frame interval where the parameter combination changes.

[0039] Figure 8 This is a diagram representing other examples of parameter combinations.

[0040] Figure 9 It is used when receiving input image data. Figure 8 A timing diagram of an example of a frame interval where the parameter combination changes.

[0041] Figure 10 This is another example of a combination of parameters.

[0042] Figure 11 It is used when receiving input image data. Figure 10 A timing diagram of an example of a frame interval where the parameter combination changes.

[0043] Figure 12 This is another example of a combination of parameters.

[0044] Figure 13 It is used in game mode Figure 12 A timing diagram of an example of a frame interval where the parameter combination changes.

[0045] Figure 14 This is a block diagram illustrating an electronic device including an organic light-emitting display device according to various embodiments of the present invention.

[0046] (Symbol Explanation)

[0047] 100: Organic light-emitting display device; 110: Display panel; 120: Panel driver; 130: Scan driver; 140: Light-emitting driver; 150: Gamma voltage generator; 160: Data driver; 170: Controller; 180: Parameter storage module; 190: Frame rate change module. Detailed Implementation

[0048] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The same reference numerals are used for the same constituent elements in the drawings, and repeated descriptions of the same constituent elements are omitted.

[0049] Figure 1 This is a block diagram illustrating the organic light-emitting display device according to various embodiments of the present invention. Figure 2a This is a timing diagram representing the frame intervals of organic light-emitting display devices in the prior art. Figure 2b This is a timing diagram showing the frame intervals of the organic light-emitting display device according to various embodiments of the present invention. Figure 3 This is a diagram illustrating an example of a combination of parameters stored in an organic light-emitting display device according to various embodiments of the present invention.

[0050] Reference Figure 1The organic light-emitting display device 100 according to various embodiments of the present invention may include a display panel 110 having a plurality of pixels PX and a panel driving unit 120 for driving the display panel 110. In one embodiment, the panel driving unit 120 may include a scan driver 130 that provides a scan signal SS to the plurality of pixels PX, a light-emitting driver 140 that provides a light-emitting signal EM to the plurality of pixels PX, a gamma voltage generator 150 that generates a gamma reference voltage VGMAR, a data driver 160 that provides a data voltage VDAT to the plurality of pixels PX based on the gamma reference voltage VGMAR, and a controller 170 that controls the scan driver 130, the light-emitting driver 140, the gamma voltage generator 150, and the data driver 160.

[0051] The display panel 110 may include a plurality of data lines, a plurality of scan lines, a plurality of light-emitting lines, and a plurality of pixels PX connected thereto. In one embodiment, each pixel PX may include a switching transistor that transmits a data voltage VDAT in response to a scan signal SS, an energy storage capacitor that stores the data voltage VDAT transmitted by the switching transistor, a driving transistor that generates a driving current based on the data voltage VDAT stored in the energy storage capacitor, a light-emitting transistor that selectively forms a path for the driving current in response to a light-emitting signal EM, and an organic light-emitting diode that emits light based on the driving current generated by the driving transistor, but is not limited thereto. As described above, since the light-emitting transistor selectively forms a path for the driving current in response to the light-emitting signal EM, each pixel PX can selectively emit light in response to the light-emitting signal EM.

[0052] The scan driver 130 can provide scan signals SS to multiple pixels PX via the plurality of scan lines based on the scan control signal SCTRL received from the controller 170. In one embodiment, the scan driver 130 can provide scan signals SS to the plurality of pixels PX sequentially on a row-by-row basis. Furthermore, in one embodiment, the scan control signal SCTRL may include a scan start signal and a scan clock signal, but is not limited thereto. In one embodiment, the scan driver 130 may be integrated or formed in the periphery of the display panel 110. In other embodiments, the scan driver 130 may be implemented by more than one integrated circuit (IC).

[0053] The light-emitting driver 140 can provide a light-emitting signal EM to a plurality of pixels PX via the plurality of light-emitting lines based on a light-emitting control signal EMCTRL received from the controller 170. In one embodiment, the light-emitting control signal EMCTRL may include a light-emitting start signal EM_START and a light-emitting clock signal, but is not limited thereto. In one embodiment, the light-emitting driver 140 can provide the light-emitting signal EM sequentially to the plurality of pixels PX on a row-by-row basis, such that the plurality of pixels PX emit light sequentially on a row-by-row basis. For example, the light-emitting driver 140 can periodically receive the light-emitting start signal EM_START and, in response to the light-emitting clock signal, sequentially shift the light-emitting start signal EM_START, thereby providing the light-emitting signal EM sequentially to the plurality of pixels PX on a row-by-row basis. In other embodiments, the light-emitting driver 140 can provide the light-emitting signal EM to the plurality of pixels PX substantially simultaneously, such that the plurality of pixels PX emit light substantially simultaneously. Furthermore, in one embodiment, the light-emitting driver 140 can receive the light-emitting start signal EM_START at a certain light-emitting period and provide the light-emitting signal EM to each pixel PX at the certain light-emitting period. Therefore, each pixel PX can emit light or not emit light at the certain light-emitting period. In one embodiment, the light-emitting driver 140 may be integrated or formed in the periphery of the display panel 110. In other embodiments, the light-emitting driver 140 may be implemented by more than one IC.

[0054] Gamma voltage generator 150 can be controlled by a gamma control signal GMACTRL from controller 170 to generate one or more gamma reference voltages VGMAR. In one embodiment, the gamma control signal GMACTRL may represent the voltage level of the current gamma combination (i.e., each gamma reference voltage VGMAR), and gamma voltage generator 150 may generate a gamma reference voltage VGMAR corresponding to the current gamma combination represented by the gamma control signal GMACTRL. In one embodiment, gamma voltage generator 150 may be included in data driver 160. In other embodiments, gamma voltage generator 150 may be located external to data driver 160.

[0055] Data driver 160 receives output image data ODAT and data control signal DCTRL from controller 170, receives gamma reference voltage VGAMR from gamma voltage generator 150, and provides data voltage VDAT to multiple pixels PX through the plurality of data lines based on the output image data ODAT, data control signal DCTRL, and gamma reference voltage VGAMR. In one embodiment, data driver 160 can generate grayscale voltages corresponding to each grayscale level based on gamma reference voltage VGAMR, select a grayscale voltage corresponding to the output image data ODAT from the grayscale voltages, and provide the selected grayscale voltage as data voltage VDAT to the multiple pixels PX. Furthermore, in one embodiment, data control signal DCTRL may include an output data strobe signal, a level start signal, and a load signal, but is not limited thereto. In one embodiment, data driver 160 and controller 170 can be implemented by a single integrated circuit, which may be referred to as a timing controller embedded data driver (TED). In other embodiments, data driver 160 and controller 170 can be implemented by separate integrated circuits.

[0056] The controller (e.g., a timing controller (TCON)) 170 may receive input image data IDAT and control signals CTRL from an external main processor (e.g., an application processor (AP), a graphics processing unit (GPU), or a graphics card). In one embodiment, the input image data IDAT may be RGB image data including red image data, green image data, and blue image data. Furthermore, in one embodiment, the control signal CTRL may include an external vertical synchronization signal, an external horizontal synchronization signal, an input data strobe signal, a master clock signal, etc., but is not limited thereto. The controller 170 may generate scan control signals SCTRL, emission control signals EMCTRL, gamma control signals GMACTRL, data control signals DCTRL, and output image data ODAT based on the input image data IDAT and the control signal CTRL. The controller 170 can provide a scan control signal SCTRL to the scan driver 130 to control the operation of the scan driver 130, a light emission control signal EMCTRL to the light emission driver 140 to control the operation of the light emission driver 140, a gamma control signal GMACTRL to the gamma voltage generator 150 to control the operation of the gamma voltage generator 150, and provide output image data ODAT and data control signal DCTRL to the data driver 160 to control the operation of the data driver 160.

[0057] The organic light-emitting display device 100 according to various embodiments of the present invention can receive input image data IDAT from the main processor at a variable frame rate (or variable frame rate). On the other hand, the mode of receiving input image data IDAT at a variable frame rate can be called an adaptive synchronization mode. For example, the adaptive synchronization mode can be a free-sync mode, a G-sync mode, a Q-sync mode, etc., but is not limited to these.

[0058] On the other hand, in existing organic light-emitting display devices that employ a pulse-driven method that periodically emits and de-emits organic light-emitting diodes (OLEDs), the frame rate of the input image data IDAT received from the main processor can be changed at any frequency, and the frame rate of the display panel 110 can be changed at any frequency synchronously with the frame rate of the input image data IDAT. In this case, in existing organic light-emitting display devices, the ratio of the emission interval to the entire frame interval (i.e., the emission duty cycle) is changed in each frame interval, which may cause flickering. For example, as... Figure 2a As shown, in existing organic light-emitting display devices, when an internal vertical synchronization signal VSYNC is generated at any time synchronously with an external vertical synchronization signal received from the main processor to define each frame interval FP1, FP2, FP3, FP4, the light emission period EP of each pixel PX of the display panel 110 cannot remain constant. The final light emission periods EP2, EP3, EP4 in each frame interval FP2, FP3, FP4 may increase or decrease compared to the desired constant light emission period EP. In frame intervals FP2, FP3, FP4 with altered light emission periods EP2, EP3, EP4, the light emission duty cycle is changed, and this change in the light emission duty cycle may cause flickering.

[0059] However, in the organic light-emitting display device 100 according to various embodiments of the present invention, the panel driving unit 120 drives the display panel 110 at a frame rate corresponding to 1 / N of the light emission frequency, such that each frame interval becomes N times the light emission period (N is an integer greater than or equal to 2). In this case, the light emission duty cycle in each frame interval can be substantially maintained constant, and the flickering can be prevented. For example, as... Figure 2bAs shown, the controller 170 of the panel driving unit 120 of the organic light-emitting display device 100 according to various embodiments of the present invention can generate an internal vertical synchronization signal VSYNC in a manner that maintains a constant light emission period EP. That is, the controller 170 of the panel driving unit 120 can generate the internal vertical synchronization signal VSYNC in a manner in which each frame interval FP1, FP2, FP3, FP4 becomes N times the light emission period EP, and the panel driving unit 120 can drive the display panel 110 based on the internal vertical synchronization signal VSYNC at frame frequencies FF1, FF2, FF3, FF4 corresponding to 1 / N of the light emission frequency EF. For example, the first frame interval FP1 can be four times the emission period EP, and the first frame frequency FF1 of the first frame interval FP1 corresponds to 1 / 4 of the emission frequency EF; the second frame interval FP2 can be twice the emission period EP, and the second frame frequency FF2 of the second frame interval FP2 corresponds to 1 / 2 of the emission frequency EF; the third frame interval FP3 can be three times the emission period EP, and the third frame frequency FF3 of the third frame interval FP3 corresponds to 1 / 3 of the emission frequency EF; the fourth frame interval FP4 can be five times the emission period EP, and the fourth frame frequency FF4 of the fourth frame interval FP4 corresponds to 1 / 5 of the emission frequency EF. In this case, the emission period EP can be maintained substantially constant, and therefore the emission duty cycle in each frame interval FP1, FP2, FP3, and FP4 can be maintained substantially constant, preventing the occurrence of flickering.

[0060] However, even if the display panel 110 is driven at a frame rate corresponding to 1 / N of the emission frequency, making each frame interval N times the emission period, a change in brightness due to a sudden change in the frame rate may be detected. In particular, in one embodiment, when the image displayed in the organic light-emitting display device 100 is not changed, or when the organic light-emitting display device 100 displays a static image, the main processor may not provide input image data IDAT to the organic light-emitting display device 100. The organic light-emitting display device 100 can store previously received input image data IDAT and display the image based on the stored input image data IDAT. Furthermore, when displaying the image based on the stored input image data IDAT, the organic light-emitting display device 100 can drive the display panel 110 at a low frame rate or the lowest frame rate, thereby reducing power consumption. Therefore, when the organic light-emitting display device 100 previously received input image data IDAT but no longer receives it, the frame rate used to drive the display panel 110 may decrease drastically, and a change in the brightness of the display panel 110 caused by this drastic decrease in frame rate may be detected. Furthermore, in one embodiment, when the organic light-emitting display device 100, which was not originally receiving input image data IDAT, starts receiving input image data IDAT again, the frame rate used to drive the display panel 110 may increase sharply, and the change in brightness of the display panel 110 caused by such a sharp increase in frame rate may be identified.

[0061] However, in the organic light-emitting display device 100 according to various embodiments of the present invention, when the panel driving unit 120 does not receive input image data IDAT, the frame rate of the display panel 110 can be gradually reduced, and when input image data IDAT is received, the frame rate of the display panel 110 can be gradually increased. That is, the panel driving unit 120 can gradually increase the number of light-emitting cycles in each frame interval when not receiving input image data IDAT, and gradually increase the number of light-emitting cycles in each frame interval when receiving input image data IDAT. In one embodiment, when the panel driving unit 120 does not receive input image data IDAT for the planned frame time of the current frame interval, it can increase the planned frame time of the next frame interval by M light-emitting cycles (M is an integer greater than or equal to 1) compared to the planned frame time of the current frame interval, thereby gradually increasing the number of light-emitting cycles in each frame interval. Furthermore, when the panel driving unit 120 receives input image data IDAT within the planned frame time for the current frame interval, it can reduce the planned frame time for the next frame interval by K light emission cycles (K is an integer greater than or equal to 1) compared to the planned frame time for the current frame interval, thereby gradually increasing the number of light emission cycles within each frame interval. Thus, in the organic light-emitting display device 100 according to various embodiments of the present invention, the frame rate for driving the display panel 110 can be gradually changed, preventing the detection of changes in the brightness of the display panel 110 caused by abrupt changes in the frame rate.

[0062] In one embodiment, the organic light-emitting display device 100 can store multiple gamma combinations corresponding to each frame frequency. When the frame frequency of the display panel 110 is changed, the panel driving unit 120 can change the gamma combination used to generate the data voltage VDAT provided to the multiple pixels PX to a gamma combination among the multiple gamma combinations corresponding to the changed frame frequency. In this case, it is possible to further prevent the change in brightness of the display panel 110 caused by the frame frequency change from being detected.

[0063] Furthermore, in one embodiment, to gradually change the frame rate of the display panel 110, the panel driving unit 120 can determine the planned frame time in the next frame interval based on the planned frame time in the current frame interval and whether input image data IDAT is received in the current frame interval, and determine the parameter combination in the next frame interval based on the planned frame time in the next frame interval, and drive the display panel 110 in the next frame interval based on the determined parameter combination. To perform this operation, in one embodiment, the controller 170 may include a parameter storage module 180 that stores multiple parameter combinations and a frame rate changing module 190 that changes the frame rate used to drive the display panel 110 based on the multiple parameter combinations.

[0064] The parameter storage module 180 can store multiple parameter combinations corresponding to multiple frame time ranges, respectively. In one embodiment, such as... Figure 3 As shown in Table 210, the parameter storage module 180 can store multiple range parameters P_RANGE_LIMIT1, P_RANGE_LIMIT2, and P_RANGE_LIMIT3 used to define the multiple frame time ranges, and store multiple parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4 corresponding to the multiple frame time ranges respectively. For example, the first range parameter P_RANGE_LIMIT1 can represent the upper limit of the first frame time range, the second range parameter P_RANGE_LIMIT2 can represent the upper limit of the second frame time range, and the third range parameter P_RANGE_LIMIT3 can represent the upper limit of the third frame time range. Furthermore, the parameter combination of the current frame interval is determined as the first parameter combination P_SET1 when the planned frame time is below the upper limit of the first frame time range, as the second parameter combination P_SET2 when the planned frame time exceeds the upper limit of the first frame time range but is below the upper limit of the second frame time range, as the third parameter combination P_SET3 when the planned frame time exceeds the upper limit of the second frame time range but is below the upper limit of the third frame time range, and as the fourth parameter combination P_SET4 when the planned frame time exceeds the upper limit of the third frame time range.

[0065] Furthermore, in one embodiment, such as Figure 3As shown in Table 210, the parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4 stored in the parameter storage module 180 may include gamma combinations GAMMA_SET1, GAMMA_SET2, GAMMA_SET3, GAMMA_SET4, reduction step parameters P_STEP_D1, P_STEP_D2, P_STEP_D3, P_STEP_D4, addition step parameters P_STEP_I1, P_STEP_I2, P_STEP_I3, P_STEP_I4, reduction hold frame parameters P_HOLD_FR_D1, P_HOLD_FR_D2, P_HOLD_FR_D3, P_HOLD_FR_D4, and addition hold frame parameters P_HOLD_FR_I1, P_HOLD_FR_I2, P_HOLD_FR_I3, P_HOLD_FR_I4. Each gamma combination GAMMA_SET1, GAMMA_SET2, GAMMA_SET3, and GAMMA_SET4 can represent a gamma reference voltage VGMAR used to generate a data voltage VDAT provided to multiple pixels PX. The panel driving unit 120 can generate a data voltage VDAT based on the gamma reference voltage VGMAR corresponding to the gamma combination (e.g., GAMMA_SET1) of the current parameter combination (e.g., P_SET1), thereby providing a data voltage VDAT corresponding to the current frame rate to multiple pixels PX. Furthermore, each reduction step parameter P_STEP_D1, P_STEP_D2, P_STEP_D3, and P_STEP_D4 can represent the number of light emission cycles within the frame interval increased when the frame rate is reduced. When not receiving input image data IDAT, the panel driving unit 120 can increase the planned frame time of the next frame interval by the number of light emission cycles represented by the reduction step parameter (e.g., P_STEP_D1) of the current parameter combination (e.g., P_SET1), thereby reducing the frame rate of the next frame interval. Furthermore, each of the increase step parameters P_STEP_I1, P_STEP_I2, P_STEP_I3, and P_STEP_I4 can represent the number of light emission cycles within the frame interval reduced when the frame rate is increased. When receiving input image data IDAT, the panel driving unit 120 can increase the frame rate of the next frame interval by decreasing the planned frame time of the next frame interval by the number of light emission cycles represented by the increase step parameter (e.g., P_STEP_I1) of the current parameter combination (e.g., P_SET1). The reduced hold frame parameters P_HOLD_FR_D1, P_HOLD_FR_D2, P_HOLD_FR_D3, and P_HOLD_FR_D4 can represent the number of frame intervals with the reduced frame frequency when the frame frequency is reduced.Without receiving input image data IDAT, the panel driving unit 120 can increase the next frame interval (planned frame time) by the number of light emission cycles represented by the reduction step parameter (e.g., P_STEP_D1) of the current parameter combination (e.g., P_SET1), and repeat the increased next frame interval a number of times corresponding to the number represented by the reduction hold frame parameter (e.g., P_HOLD_FR_D1) of the current parameter combination (e.g., P_SET1). Each increase hold frame parameter P_HOLD_FR_I1, P_HOLD_FR_I2, P_HOLD_FR_I3, and P_HOLD_FR_I4 can represent the number of frame intervals with the increased frame frequency when the frame frequency increases. When receiving input image data IDAT, the panel driving unit 120 can reduce the next frame interval (planned frame time) by the number of light emission cycles represented by the increase step parameter (e.g., P_STEP_I1) of the current parameter combination (e.g., P_SET1), and repeat the reduced next frame interval a number of times corresponding to the number of increase hold frame parameters (e.g., P_HOLD_FR_I1) of the current parameter combination (e.g., P_SET1).

[0066] Furthermore, in one embodiment, such as Figure 3 As shown in Table 230, the parameter storage module 180 can also store the game mode parameter P_GAME_OP, which indicates whether the working mode of the organic light-emitting display device 100 is game mode; the critical frame parameter P_FR_TH, which corresponds to the frame time threshold; the effective cycle parameter P_ACT_CYC, which indicates the number of light emission cycles in the effective interval of the frame interval; the minimum frame parameter P_FR_MIN, which corresponds to the minimum frame time; and the maximum frame parameter P_FR_MAX, which corresponds to the maximum frame time.

[0067] The frame rate change module 190 can change the frame rate of the display panel 110 by using multiple parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4 stored in the parameter storage module 180.

[0068] For example, if no input image data IDAT is received in the current frame interval, the frame rate change module 190 can end the current frame interval when the time of the current frame interval becomes the planned frame time in the current frame interval. Furthermore, the frame rate change module 190 can calculate the planned frame time in the next frame interval by adding the emission period to the planned frame time in the current frame interval and the product of the reduction step parameter (e.g., P_STEP_D1) of the current parameter combination (e.g., P_SET1) in the current frame interval. Thus, the planned frame time in the next frame interval is increased by an integer multiple of the emission period compared to the planned frame time in the current frame interval, and the frame rate of the next frame interval can be reduced compared to the frame rate of the current frame interval. In one embodiment, when the time after adding the product of the emission period and the reduction step parameter in the current frame interval to the planned frame time in the current frame interval is greater than the maximum frame time represented by the maximum frame parameter P_FR_MAX, the frame rate change module 190 can determine the planned frame time in the next frame interval as the maximum frame time. In addition, the frame rate change module 190 can determine the parameter combination in the next frame interval as a parameter combination among multiple parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4 that corresponds to the planned frame time in the next frame interval.

[0069] In other examples, when input image data IDAT is received in the current frame interval, the frame rate change module 190 can calculate the end frame time of the current frame interval by subtracting the product of the emission period and the increment step parameter (e.g., P_STEP_I1) of the current parameter combination (e.g., P_SET1) in the current frame interval from the planned frame time in the current frame interval, and terminate the current frame interval when the time of the current frame interval becomes the end frame time of the current frame interval. Furthermore, the frame rate change module 190 can determine the planned frame time in the next frame interval as the end frame time of the current frame interval. Thus, the planned frame time in the next frame interval can be reduced by an integer multiple of the emission period compared to the planned frame time in the current frame interval, and the frame rate of the next frame interval can be increased compared to the frame rate of the current frame interval. In one embodiment, when the time taken by subtracting the product of the emission period and the increment step parameter in the current frame interval from the planned frame time in the current frame interval is less than the minimum frame time represented by the minimum frame parameter P_FR_MIN, the frame rate change module 190 can determine the planned frame time in the next frame interval as the minimum frame time. Furthermore, in one embodiment, when the time taken by subtracting the product of the emission period and the increment step parameter in the current frame interval from the planned frame time in the current frame interval is greater than the frame time threshold value represented by the critical frame parameter P_FR_TH, the frame rate change module 190 can determine the planned frame time in the next frame interval as the minimum frame time. Additionally, the frame rate change module 190 can determine the parameter combination in the next frame interval as a parameter combination from among multiple parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4 that corresponds to the planned frame time in the next frame interval.

[0070] Furthermore, in one embodiment, when the game mode parameter P_GAME_OP represents the game mode, the frame rate change module 190 can determine the planned frame time in each frame interval as the maximum frame time represented by the maximum frame parameter P_FR_MAX. Additionally, the frame rate change module 190 can end the current frame interval upon receiving the input image data IDAT. Therefore, in the game mode, each frame interval of the display panel 110 can maintain an integer multiple of the light emission period, and the frame rate of the display panel 110 can be determined based on the frame rate of the input image data IDAT. Furthermore, the frame rate change module 190 can determine the parameter combination in the next frame interval based on the end frame time of the current frame interval.

[0071] As described above, in the organic light-emitting display device 100 according to various embodiments of the present invention, the panel driving unit 120 can drive the display panel 110 at a frame rate corresponding to 1 / N of the emission frequency, making each frame interval N times the emission period. Therefore, even when receiving input image data IDAT at a variable frame rate, the emission duty cycle in each frame interval can be kept constant, preventing flicker. Furthermore, in the organic light-emitting display device 100 according to various embodiments of the present invention, the panel driving unit 120 can gradually decrease the frame rate of the display panel 110 when not receiving input image data IDAT, and gradually increase the frame rate of the display panel 110 when receiving input image data IDAT. Therefore, even if the frame rate (or frame frequency) of the input image data IDAT changes drastically, the change in brightness caused by the change in frame rate will not be detected.

[0072] Figure 4 This is a sequence diagram illustrating the driving methods of the organic light-emitting display device according to various embodiments of the present invention.

[0073] Reference Figure 1 and Figure 4 In the driving method of the organic light-emitting display device 100 according to various embodiments of the present invention, the panel driving unit 120 can drive the display panel 110 at a frame rate corresponding to 1 / N of the light emission frequency, so that each frame interval becomes N times the light emission period (N is an integer greater than or equal to 2) (S310). As a result, the light emission duty cycle in each frame interval can be kept constant, and flickering can be prevented.

[0074] If input image data IDAT is not received (S330: No), the panel driving unit 120 can progressively reduce the frame rate of the display panel 110 (S350). The panel driving unit 120 can progressively increase the number of light emission cycles within the frame interval (blank interval) to progressively reduce the frame rate of the display panel 110. In one embodiment, in order to progressively reduce the frame rate of the display panel 110, if the input image data IDAT is not received within the planned frame time for the current frame interval, the panel driving unit 120 can increase the planned frame time for the next frame interval by M light emission cycles (M is an integer greater than or equal to 1) compared to the planned frame time for the current frame interval. Furthermore, if the planned frame time for the next frame interval increases (i.e., the frame rate of the display panel 110 decreases), the panel driving unit 120 can change the gamma combination used to generate the data voltage VDAT provided to the multiple pixels PX.

[0075] Furthermore, when receiving input image data IDAT (S330: Yes), the panel driving unit 120 can progressively increase the frame rate of the display panel 110 (S370). The panel driving unit 120 can progressively decrease the number of light emission cycles within the frame interval (blank interval), thereby progressively increasing the frame rate of the display panel 110. In one embodiment, in order to progressively increase the frame rate of the display panel 110, when receiving input image data IDAT within a planned frame time for the current frame interval, the panel driving unit 120 reduces the planned frame time for the next frame interval by K light emission cycles (K is an integer greater than or equal to 1) compared to the planned frame time for the current frame interval. Furthermore, if the planned frame time for the next frame interval is reduced (i.e., the frame rate of the display panel 110 increases), the panel driving unit 120 can change the gamma combination used to generate the data voltage VDAT provided to the multiple pixels PX.

[0076] As described above, in the driving methods of the organic light-emitting display device 100 according to various embodiments of the present invention, the panel driving unit 120 drives the display panel 110 at a frame rate corresponding to 1 / N of the emission frequency, making each frame interval N times the emission period. Therefore, even when receiving input image data IDAT at a variable frame rate, the emission duty cycle in each frame interval can be kept constant, and flickering can be prevented. Furthermore, in the driving methods of the organic light-emitting display device 100 according to various embodiments of the present invention, the panel driving unit 120 can gradually decrease the frame rate of the display panel 110 when not receiving input image data IDAT, and gradually increase the frame rate of the display panel 110 when receiving input image data IDAT. Therefore, even if the frame rate (or frame frequency) of the input image data IDAT changes drastically, the change in brightness caused by the change in frame rate will not be detected.

[0077] Figure 5 This is a sequence diagram illustrating a driving method for an organic light-emitting display device according to an embodiment of the present invention. Figure 6 This is a diagram illustrating an example of a parameter combination. Figure 7 This indicates the use of [the system] without receiving input image data. Figure 6 A timing diagram of an example of a frame interval with changing parameter combinations. Figure 8 This is a diagram representing other examples of parameter combinations. Figure 9 It is used when receiving input image data. Figure 8 A timing diagram of an example of a frame interval with changing parameter combinations. Figure 10 This is another example of a combination of parameters. Figure 11 It is used when receiving input image data. Figure 10 A timing diagram of an example of a frame interval with changing parameter combinations. Figure 12This is another example of a combination of parameters. Figure 13 This means utilizing in game mode. Figure 12 A timing diagram of an example of a frame interval where the parameter combination changes.

[0078] Reference Figure 1 and Figure 5 When the working mode of the organic light-emitting display device 100 is not game mode (S410: No) and when it does not receive input image data IDAT (S420: No), the panel driving unit 120 can gradually reduce the frame rate of the display panel 110 (S430, S440, S445, S490). In one embodiment, if no input image data IDAT is received during the planned frame time of the current frame interval (S420: No), the panel driving unit 120 may end the current frame interval when the time of the current frame interval becomes the planned frame time of the current frame interval (S430), calculate the planned frame time of the next frame interval by adding the product of the light emission period and the reduction step parameter in the current frame interval to the planned frame time in the current frame interval (S440), determine the parameter combination in the next frame interval based on the planned frame time in the next frame interval (S445), and drive the display panel 110 in the next frame interval based on the calculated planned frame time and the determined parameter combination (S490).

[0079] For example, storage Figure 6 The panel driver unit 120, which uses parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4, can operate as follows when not receiving input image data IDAT: Figure 7 Drive the display panel 110 as shown. In Figure 7 In this context, TE represents the tearing effect signal. The tearing effect signal TE can have at least one pulse with an interval corresponding to the emission period EP in the blank intervals of each frame interval FP1, FP2, FP3, FP4, and FP5, thereby preventing tearing. Therefore, in each frame interval FP1, FP2, FP3, FP4, and FP5, the tearing effect signal TE can have one more pulse than the number of emission periods EP in the blank interval. In one embodiment, the tearing effect signal TE can be generated by the panel driving unit 120 and provided to the main processor.

[0080] like Figure 6 and Figure 7 As shown, if the panel driving unit 120 receives the first frame data DT1 as input image data IDAT, the panel driving unit 120 can provide a first data voltage VDAT1 corresponding to the first frame data DT1 to multiple pixels PX in the first frame interval FP1. Figure 7The example shown corresponds to the planned frame time of the first frame interval FP1 and five emission cycles EP. That is, according to the effective cycle parameter P_ACT_CYC of frame 4, the effective intervals of each frame interval FP1, FP2, FP3, FP4, and FP5 can have a time length corresponding to four emission cycles EP. The planned frame time of the first frame interval FP1 can correspond to the sum of the time lengths of the four emission cycles EP within the effective interval and the time length of the one emission cycle EP within the blank interval. For example... Figure 6 As shown, the range parameters P_RANGE_LIMIT1, P_RANGE_LIMIT2, and P_RANGE_LIMIT3 can represent the number of emission periods EP within the blank interval of each frame time range, corresponding to the upper limit of the frame time range. Therefore, storage Figure 6 The panel driving unit 120, with the parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4 shown, can select the first parameter combination P_SET1 when the planned frame time corresponds to the time length of a frame interval in the blank interval where there is no light-emitting period EP, i.e., when the planned frame time corresponds to the time length of four light-emitting periods EP in the effective interval; and select the second parameter combination P_SET2 when the planned frame time corresponds to the time length of a frame interval in the blank interval where there is one light-emitting period EP, i.e., when the planned frame time corresponds to the sum of the time length of four light-emitting periods EP in the effective interval and the time length of one light-emitting period EP in the blank interval; select the third parameter combination P_SET3 when the planned frame time corresponds to the time length of a frame interval in the blank interval where there are two light-emitting periods EP, i.e., when the planned frame time corresponds to the sum of the time length of four light-emitting periods EP in the effective interval and the time length of two light-emitting periods EP in the blank interval; and select the fourth parameter combination P_SET4 when the planned frame time is seven or more light-emitting periods EP. On the other hand, in Figure 7 In this example, since the planned frame time of the first frame interval FP1 corresponds to the time length of the frame interval in which a light emission period EP occurs within the blank interval, the parameter combination of the first frame interval FP1 is determined to be the second parameter combination P_SET2. Therefore, the panel driving unit 120 can drive the display panel 110 in the first frame interval FP1 based on the second gamma combination GAMMA_SET2 of the second parameter combination P_SET2.

[0081] If no input image data IDAT is received during the planned frame time of the first frame interval FP1, the panel driving unit 120 can terminate the first frame interval FP1 when the time of the first frame interval FP1 becomes the planned frame time of the first frame interval FP1. Furthermore, the panel driving unit 120 can calculate the planned frame time of the second frame interval FP2 by adding the product of the emission period EP and the reduction step parameter P_STEP_D2 of the second parameter combination P_SET2 to the planned frame time of the first frame interval FP1. That is, the reduction step parameter P_STEP_D2 of the second parameter combination P_SET2 has a value of 1, so the planned frame time of the second frame interval FP2 can correspond to the time length of the frame interval containing two emission periods EP within the blank interval. On the other hand, the reduction hold frame parameter P_HOLD_FR_D2 of the second parameter combination P_SET2 has a value of 1, so the number of second frame intervals FP2 having a planned frame time corresponding to the time length of the frame interval containing two emission periods EP within the blank interval can be one. Furthermore, the planned frame time of the second frame interval FP2 corresponds to the time length of the frame interval in which two light emission cycles EP exist within the blank interval. Therefore, the parameter combination of the second frame interval FP2 can be determined as the third parameter combination P_SET3. Thus, the panel driving unit 120 can drive the display panel 110 in the second frame interval FP2 based on the third gamma combination GAMMA_SET3 of the third parameter combination P_SET3. On the other hand, since the input image data IDAT is not received, the panel driving unit 120 can provide the multiple pixels PX with a first data voltage VDAT1_RE corresponding to the stored first frame data DT1.

[0082] If no input image data IDAT is received during the planned frame time of the second frame interval FP2, the panel driving unit 120 can terminate the second frame interval FP2 when the time of the second frame interval FP2 becomes the planned frame time of the second frame interval FP2. Furthermore, the panel driving unit 120 can calculate the planned frame time of the third frame interval FP3 by adding the product of the emission period EP and the reduction step parameter P_STEP_D3 of the third parameter combination P_SET3 to the planned frame time of the second frame interval FP2. That is, the reduction step parameter P_STEP_D3 of the third parameter combination P_SET3 has a value of 1, so the planned frame time of the third frame interval FP3 can correspond to the time length of the frame interval containing three emission periods EP within the blank interval. On the other hand, the reduction hold frame parameter P_HOLD_FR_D3 of the third parameter combination P_SET3 has a value of 1, so the number of third frame intervals FP3 having a planned frame time corresponding to the time length of the frame interval containing three emission periods EP within the blank interval can be one. Furthermore, the planned frame time of the third frame interval FP3 corresponds to the time length of the frame interval in which three emission cycles EP exist within the blank interval. Therefore, the parameter combination of the third frame interval FP3 can be determined as the fourth parameter combination P_SET4. Thus, the panel driving unit 120 can drive the display panel 110 in the third frame interval FP3 based on the fourth gamma combination GAMMA_SET4 of the fourth parameter combination P_SET4.

[0083] On the other hand, the maximum frame parameter P_FR_MAX can represent the number of emission periods EP within the blank interval of the frame interval with the maximum frame time, thus defining the maximum frame time. Figure 6 In the example, since the maximum frame parameter P_FR_MAX has a value of 3, the maximum frame time can correspond to the sum of the time lengths of the four emission cycles EP within the effective interval and the three emission cycles EP within the blank interval. That is, the planned frame time of the third frame interval FP3 is the maximum frame time represented by the maximum frame parameter P_FR_MAX. Therefore, even if no input image data IDAT is received during the planned frame time of the third frame interval FP3, the planned frame times of the subsequent fourth frame interval FP4 and fifth frame interval FP5 will not increase compared to the planned frame time of the third frame interval FP3, and can be determined as the maximum frame time. Furthermore, the parameter combinations of the subsequent fourth frame interval FP4 and fifth frame interval FP5 can be determined as the fourth parameter combination P_SET4.

[0084] In this way, without receiving input image data IDAT, the time length of each frame interval FP1, FP2, FP3 can be gradually increased from the first frame interval FP1 corresponding to five emission cycles EP to the third frame interval FP3 corresponding to seven emission cycles EP, and thus the frame rate of each frame interval FP1, FP2, FP3 can be gradually reduced.

[0085] Refer again Figure 1 and Figure 5 When the working mode of the organic light-emitting display device 100 is not game mode (S410: No) and the input image data IDAT is received (S420: Yes), the panel driving unit 120 can gradually increase the frame rate of the display panel 110 (S450, S455, S460, S465, S490). In one embodiment, when input image data IDAT is received within the planned frame time of the current frame interval (S420: Yes), the panel driving unit 120 calculates the end frame time of the current frame interval by subtracting the product of the light emission period and the increase step parameter in the current frame interval from the planned frame time in the current frame interval (S450). When the time of the current frame interval becomes the end frame time of the current frame interval, the current frame interval is ended (S455). The planned frame time in the next frame interval is determined as the end frame time of the current frame interval (S460). The parameter combination in the next frame interval is determined based on the planned frame time in the next frame interval (S465). The display panel 110 is driven in the next frame interval based on the determined planned frame time and the determined parameter combination (S490).

[0086] For example, storage Figure 8 The panel driver unit 120, with parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4, can, when receiving input image data IDAT, perform the following actions: Figure 9 The drive display panel 110 is shown. In Figure 8 and Figure 9The example shown is the maximum frame time represented by the maximum frame parameter P_FR_MAX, which has a value of 11 corresponding to the planned frame time of the first frame interval FP1. That is, the planned frame time of the first frame interval FP1 corresponds to the time length of the frame interval in which eleven emission cycles EP exist within the blank interval. Furthermore, the planned frame time of the first frame interval FP1 corresponds to the time length of the frame interval in which eleven emission cycles EP exist, which is greater than the third range parameter P_RANGE_LIMIT3, which has a value of 7 in the blank interval. Therefore, the parameter combination of the first frame interval FP1 can be determined as the fourth parameter combination P_SET4. Therefore, the panel driving unit 120 can drive the display panel 110 in the first frame interval FP1 based on the fourth gamma combination GAMMA_SET4 of the fourth parameter combination P_SET4.

[0087] If no input image data IDAT is received during the planned frame time of the first frame interval FP1, the panel driving unit 120 can terminate the first frame interval FP1 when the time of the first frame interval FP1 becomes the planned frame time of the first frame interval FP1. On the other hand, the planned frame time of the first frame interval FP1 is the maximum frame time represented by the maximum frame parameter P_FR_MAX, so the planned frame time of the subsequent second frame interval FP2 can also be determined as the maximum frame time. Furthermore, the parameter combination of the subsequent second frame interval FP2 can be determined as the fourth parameter combination P_SET4.

[0088] When the second frame data DT2 is received as input image data IDAT within the planned frame time of the second frame interval FP2, the panel driving unit 120 can calculate the end frame time of the second frame interval FP2 by subtracting the product of the emission period and the addition step parameter P_STEP_I4 in the second frame interval FP2 from the planned frame time in the second frame interval FP2, and terminate the second frame interval FP2 when the time of the second frame interval FP2 becomes the end frame time of the second frame interval FP2. That is, the planned frame time of the second frame interval FP2 corresponds to the time length of the frame interval in the blank interval where there are eleven emission periods EP, and the addition step parameter P_STEP_I4 in the second frame interval FP2 has a value of 4, so the end frame time of the second frame interval FP2 can correspond to the time length of the frame interval in the blank interval where there are seven emission periods EP. Therefore, the second frame interval FP2 can terminate after seven emission periods EP have been repeated in the blank interval. The planned frame time of the third frame interval FP3 can be determined as the end frame time of the second frame interval FP2. That is, the planned frame time of the third frame interval FP3 can correspond to the time length of the frame interval in which seven emission cycles EP exist within the blank interval.

[0089] In one embodiment, if the end frame time of the current frame interval is greater than the frame time threshold represented by the critical frame parameter P_FR_TH, the planned frame time of the next frame interval can be determined as the minimum frame time corresponding to the minimum frame parameter P_FR_MIN. On the other hand, the end frame time of the second frame interval FP2 corresponds to the time length of a frame interval with seven emission cycles EP that is smaller than the critical frame parameter P_FR_TH, which has a value of 8 in the blank interval. Therefore, the planned frame time of the third frame interval FP3 may not be determined as the minimum frame time corresponding to the minimum frame parameter P_FR_MIN, but rather as the end frame time of the second frame interval FP2.

[0090] On the other hand, since the number of light-emitting periods EP in the blank interval corresponding to the planned frame time of the third frame interval FP3 is 7, which exceeds the second range parameter P_RANGE_LIMIT2 and is below the third range parameter P_RANGE_LIMIT3, the parameter combination of the third frame interval FP3 can be determined as the third parameter combination P_SET3. Therefore, the panel driving unit 120 can drive the display panel 110 in the third frame interval FP3 based on the third gamma combination GAMMA_SET3 of the third parameter combination P_SET3. Furthermore, the panel driving unit 120 can provide the second data voltage VDAT2 corresponding to the second frame data DT2 to the multiple pixels PX in the third frame interval FP3.

[0091] When the third frame data DT3 is received as input image data IDAT within the planned frame time of the third frame interval FP3, the panel driving unit 120 can calculate the end frame time of the third frame interval FP3 by subtracting the product of the emission period and the addition step parameter P_STEP_I3 in the third frame interval FP3 from the planned frame time in the third frame interval FP3, and terminate the third frame interval FP3 when the time of the third frame interval FP3 becomes the end frame time of the third frame interval FP3. On the other hand, since the number of emission periods EP in the blank interval corresponding to the planned frame time of the third frame interval FP3 is seven, and the addition step parameter P_STEP_I3 in the third frame interval FP3 represents 5, the end frame time of the third frame interval FP3 can correspond to the time length of the frame interval in the blank interval where two emission periods EP exist. Therefore, the third frame interval FP3 can terminate when two emission periods EP have been repeated in the blank interval. The planned frame time of the fourth frame interval FP4 can be determined as the end frame time of the third frame interval FP3. That is, the planned frame time of the fourth frame interval FP4 can correspond to the time length of the frame interval in which two emission cycles EP exist within the blank interval. Furthermore, since the number of emission cycles EP in the blank interval corresponding to the planned frame time of the fourth frame interval FP4 is two, exceeding the first range parameter P_RANGE_LIMIT1 and falling below the second range parameter P_RANGE_LIMIT2, the parameter combination of the fourth frame interval FP4 can be determined as the second parameter combination P_SET2. Therefore, the panel driving unit 120 can drive the display panel 110 in the fourth frame interval FP4 based on the second gamma combination GAMMA_SET2 of the second parameter combination P_SET2. Furthermore, the panel driving unit 120 can provide a third data voltage VDAT3 corresponding to the third frame data DT3 to multiple pixels PX in the fourth frame interval FP4.

[0092] When the fourth frame data DT4 is received as input image data IDAT within the planned frame time of the fourth frame interval FP4, the panel driving unit 120 can calculate the end frame time of the fourth frame interval FP4 by subtracting the product of the emission period and the addition step parameter P_STEP_I2 in the fourth frame interval FP4 from the planned frame time in the fourth frame interval FP4. On the other hand, since the number of emission periods EP in the blank interval corresponding to the planned frame time of the fourth frame interval FP4 is two, and the addition step parameter P_STEP_I2 in the fourth frame interval FP4 represents 3, the number of emission periods EP in the blank interval corresponding to the calculated end frame time of the fourth frame interval FP4 can be less than the minimum frame parameter P_FR_MIN. In this case, the end frame time of the fourth frame interval FP4 can be determined as the minimum frame time corresponding to the minimum frame parameter P_FR_MIN, which can correspond to the time length of the frame interval in the blank interval where there is no emission period EP. However, since the fourth frame data DT4 is received after the end frame time of the fourth frame interval FP4, the fourth frame interval FP4 can end synchronously with the moment the fourth frame data DT4 is received, that is, it can end when the time of the blank interval becomes one emission cycle EP. The planned frame time of the fifth frame interval FP5 can correspond to the actual end frame time of the fourth frame interval FP4, that is, to the time length of the frame interval in the blank interval where one emission cycle EP exists. Furthermore, since the number of emission cycles EP in the blank interval corresponding to the planned frame time of the fifth frame interval FP5 is one, which is less than or equal to the first range parameter P_RANGE_LIMIT1, the parameter combination of the fifth frame interval FP5 can be determined as the first parameter combination P_SET1. Therefore, the panel driving unit 120 can drive the display panel 110 in the fifth frame interval FP5 based on the first gamma combination GAMMA_SET1 of the first parameter combination P_SET1. In addition, the panel driving unit 120 can provide the fourth data voltage VDAT4 corresponding to the fourth frame data DT4 to the multiple pixels PX in the fifth frame interval FP5.

[0093] Furthermore, when the fifth frame data DT5 is received as input image data IDAT within the planned frame time of the fifth frame interval FP5, the panel driving unit 120 can terminate the fifth frame interval FP5 when the time of the fifth frame interval FP5 becomes the minimum frame time corresponding to the minimum frame parameter P_FR_MIN. The planned frame time of the sixth frame interval FP6 can be the minimum frame time corresponding to the minimum frame parameter P_FR_MIN, and the parameter combination of the sixth frame interval FP6 can be determined as the first parameter combination P_SET1. Furthermore, the panel driving unit 120 can provide a fifth data voltage VDAT5 corresponding to the fifth frame data DT5 to multiple pixels PX during the sixth frame interval FP6.

[0094] When the input image data IDAT is received in this manner, the time length of each frame interval FP1, FP2, FP3, FP4, and FP5 can be gradually reduced from the first frame interval FP1 corresponding to fifteen emission cycles EP to the fifth frame interval FP5 corresponding to four emission cycles EP, thereby gradually increasing the frame rate of each frame interval FP1, FP2, FP3, FP4, and FP5.

[0095] In one embodiment, if the time taken to subtract the product of the emission period and the increment step parameter in the current frame interval from the planned frame time in the current frame interval is greater than the frame time threshold corresponding to the threshold frame parameter P_FR_TH, the planned frame time in the next frame interval can be determined as the minimum frame time corresponding to the minimum frame parameter P_FR_MIN. For example, as Figure 10 and Figure 11 As shown, the planned frame time of the first frame interval FP1 corresponds to the time length of a frame interval containing eleven emission cycles EP within a blank interval. When the second frame data DT2 is received as input image data IDAT within the planned frame time of the first frame interval FP1, the end frame time of the first frame interval FP1 can correspond to the time length of a frame interval containing seven emission cycles EP within a blank interval. In this case, the number of emission cycles EP in the blank interval corresponding to the end frame time of the first frame interval FP1 (i.e., 7) is greater than the critical frame parameter P_FR_TH (i.e., 6). Therefore, the planned frame time of the second frame interval FP2 can be determined as the minimum frame time corresponding to the minimum frame parameter P_FR_MIN. Thus, the frame frequency of the second frame interval FP2 can be the maximum frame frequency corresponding to the minimum frame time. Furthermore, when the third frame data DT3, the fourth frame data DT4, the fifth frame data DT5, and the sixth frame data DT6 are received in the second frame interval FP2, the third frame interval FP3, the fourth frame interval FP4, the fifth frame interval FP4, and the sixth frame interval FP5, respectively, the frame frequency of the third frame interval FP3, the fourth frame interval FP4, the fifth frame interval FP5, and the sixth frame interval FP6 can also be the maximum frame frequency.

[0096] Refer again Figure 1 and Figure 5When the working mode of the organic light-emitting display device 100 is game mode (S410: Yes), the panel driving unit 120 can determine the planned frame time in each frame interval as the maximum frame time (S470), end the current frame interval when receiving input image data IDAT (S475), and determine the parameter combination in the next frame interval based on the end frame time in the current frame interval (S480), and drive the display panel 110 in the next frame interval based on the determined parameter combination (S490).

[0097] For example, storage Figure 12 The panel driver unit 120, which contains parameter combinations P_SET1, P_SET2, P_SET3, and P_SET4, can function as follows in the game mode: Figure 13 The display panel 110 is driven as shown. On the other hand, in Figure 12 In the example, the minimum frame parameter P_FR_MIN represents the case where there is one emission period EP within the blank interval. Therefore, the time of each frame interval FP1, FP2, FP3, FP4, FP5, FP6 can be longer than the time length of the frame interval where there is one emission period EP within the blank interval. Figure 13 The first pulse of the tearing effect signal TE in each frame interval FP1, FP2, FP3, FP4, FP5, and FP6 is shown by dashed lines. The panel driving unit 120 can determine the planned frame time of each frame interval FP1, FP2, FP3, FP4, FP5, and FP6 as the maximum frame time corresponding to the maximum frame parameter P_FR_MAX. That is, without receiving input image data IDAT, each frame interval FP1, FP2, FP3, FP4, FP5, and FP6 can continue until sixteen emission cycles EP are repeated in the blank interval. Furthermore, as... Figure 13 As shown, each frame interval FP1, FP2, FP3, FP4, FP5, and FP6 can end when the input image data IDAT is received. Therefore, in the game mode, each frame interval FP1, FP2, FP3, FP4, FP5, and FP6 of the display panel 110 can maintain an integer multiple of the light emission period EP, and the frame rate of the display panel 110 can be determined according to the frame rate of the input image data IDAT.

[0098] Furthermore, in the game mode, the parameter combination in the next frame interval can be determined based on the end frame time of the current frame interval (or the number of emission cycles (EPs) in the blank interval of the current frame interval). For example, since the number of emission cycles (EPs) in the blank interval of the first frame interval FP1 is four, exceeding the first range parameter P_RANGE_LIMIT1 and below the second range parameter P_RANGE_LIMIT2, the parameter combination for the second frame interval FP2 can be determined as the second parameter combination P_SET2. Furthermore, since the number of emission cycles (EPs) in the blank interval of the second frame interval FP2 is one, below the first range parameter P_RANGE_LIMIT1, the parameter combination for the third frame interval FP3 can be determined as the first parameter combination P_SET1. Furthermore, since the number of emission cycles (EPs) in the blank interval of the third frame interval FP3 is ten, exceeding the second range parameter P_RANGE_LIMIT2 and below the third range parameter P_RANGE_LIMIT3, the parameter combination for the fourth frame interval FP4 can be determined as the third parameter combination P_SET3. Furthermore, the number of emission cycles (EPs) within the blank interval of the fourth frame interval FP4 is four, exceeding the first range parameter P_RANGE_LIMIT1 and falling below the second range parameter P_RANGE_LIMIT2. Therefore, the parameter combination for the fifth frame interval FP5 can be determined as the second parameter combination P_SET2. Additionally, the number of emission cycles (EPs) within the blank interval of the fifth frame interval FP5 is fifteen, exceeding the third range parameter P_RANGE_LIMIT3. Therefore, the parameter combination for the sixth frame interval FP6 can be determined as the fourth parameter combination P_SET4.

[0099] As described above, in the driving method of the organic light-emitting display device 100 according to an embodiment of the present invention, the panel driving unit 120 can drive the display panel 110 at a frame rate corresponding to 1 / N of the emission frequency, making each frame interval N times the emission period. Therefore, even when receiving input image data IDAT at a variable frame rate, the emission duty cycle in each frame interval can be kept constant, preventing flicker. Furthermore, in the driving method of the organic light-emitting display device 100 according to an embodiment of the present invention, the panel driving unit 120 can gradually decrease the frame rate of the display panel 110 when not receiving input image data IDAT, and gradually increase the frame rate of the display panel 110 when receiving input image data IDAT. Therefore, even if the frame rate (or frame frequency) of the input image data IDAT changes drastically, the change in brightness caused by the change in frame rate will not be detected.

[0100] Figure 14 This is a block diagram illustrating an electronic device including an organic light-emitting display device according to various embodiments of the present invention.

[0101] Reference Figure 14 The electronic device 1100 may include a processor 1110, a storage device 1120, a storage device 1130, an input / output device 1140, a power supply 1150, and an organic light-emitting display device 1160. The electronic device 1100 may also include various ports that can communicate with video cards, sound cards, memory cards, USB devices, etc., or can communicate with other systems.

[0102] Processor 1110 can perform specific calculations or tasks. According to embodiments, processor 1110 can be a microprocessor, central processing unit (CPU), etc. Processor 1110 can be connected to other components via address bus, control bus, and data bus, etc. According to embodiments, processor 1110 can also be connected to an expansion bus such as a Peripheral Component Interconnect (PCI) bus.

[0103] Storage device 1120 can store data required for the operation of electronic device 1100. For example, storage device 1120 may include non-volatile storage devices such as EPROM (Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), Flash Memory, PRAM (Phase Change Random Access Memory), RRAM (Resistance Random Access Memory), NFGM (Nano Floating Gate Memory), PoRAM (Polymer Random Access Memory), MRAM (Magnetic Random Access Memory), FRAM (Ferroelectric Random Access Memory) and / or volatile storage devices such as DRAM (Dynamic Random Access Memory), SRAM (Static Random Access Memory), and mobile DRAM.

[0104] Storage device 1130 may include solid-state drive (SSD), hard disk drive (HDD), CD-ROM, etc. Input / output device 1140 may include input components such as keyboard, keypad, touchpad, touch screen, mouse, etc., and output components such as speakers, printers, etc. Power supply 1150 can supply the power required for the operation of electronic device 1100. Organic light-emitting display device 1160 can be connected to other components through the aforementioned bus or other communication links.

[0105] In the organic light-emitting display device 1160, the display panel can be driven at a frame rate corresponding to 1 / N of the emission frequency, making each frame interval N times the emission period. Therefore, even when receiving input image data at a variable frame rate (or variable frame frequency), the emission duty cycle in each frame interval can be kept constant, preventing flicker. Furthermore, in the organic light-emitting display device 1160, the frame rate of the display panel can be gradually reduced when no input image data is being received, and the frame rate of the display panel can be gradually increased when the input image data is being received. Therefore, even if the frame rate (or frame frequency) of the input image data changes drastically, the change in brightness caused by the change in frame rate will not be detected.

[0106] According to the embodiments, the electronic device 1100 can be any electronic device including the organic light-emitting display device 1160, such as a smartphone, mobile phone, tablet computer, digital television, 3D TV, personal computer (PC), home electronic device, laptop computer, personal digital assistant (PDA), portable multimedia player (PMP), digital camera, music player, portable game console, navigation device, etc.

[0107] (Industry availability)

[0108] This invention is applicable to any organic light-emitting display device and electronic devices including thereof. For example, it can be applied to smartphones, mobile phones, tablets, TVs, digital TVs, 3D TVs, PCs, home electronic devices, laptops, PDAs, PMPs, digital cameras, music players, portable game consoles, navigators, etc.

[0109] The present invention has been described above with reference to various embodiments thereof. However, those skilled in the art should understand that various modifications and alterations can be made to the present invention without departing from the spirit and scope of the invention as set forth in the claims.

Claims

1. An organic light-emitting display device, characterized in that, include: The display panel includes multiple pixels; as well as The panel driver unit drives the display panel. The panel driving unit is configured as follows: The display panel is driven at a frame rate corresponding to 1 / N of the emission frequency, such that each frame interval becomes N times the emission period, where N is an integer greater than or equal to 2. Without receiving input image data, the frame rate of the display panel is gradually reduced, and Upon receiving the input image data, the frame rate of the display panel is progressively increased. The planned frame time for the next frame interval is determined based on the planned frame time in the current frame interval and whether the input image data is received in the current frame interval. The parameter combination in the next frame interval is determined based on the planned frame time in the next frame interval.

2. The organic light-emitting display device according to claim 1, characterized in that, The panel driving unit is further configured to: Without receiving the input image data, the number of emission cycles within the frame interval is progressively increased, and Upon receiving the input image data, the number of emission cycles within the frame interval is gradually reduced.

3. The organic light-emitting display device according to claim 1, characterized in that, The panel driving unit is further configured to: If no input image data is received within the planned frame time for the current frame interval, the planned frame time for the next frame interval is increased by M emission cycles compared to the planned frame time for the current frame interval, where M is an integer greater than or equal to 1. When receiving the input image data within the planned frame time for the current frame interval, the planned frame time for the next frame interval is reduced by K emission cycles compared to the planned frame time for the current frame interval, where K is an integer greater than or equal to 1.

4. The organic light-emitting display device according to claim 1, characterized in that, If the frame rate of the display panel is changed, the panel driving unit changes the gamma combination used to generate the data voltage provided to the plurality of pixels.

5. The organic light-emitting display device according to claim 1, characterized in that, The panel driver unit stores multiple parameter combinations corresponding to multiple frame time ranges. The multiple parameter combinations include: Gamma combination refers to the gamma reference voltage used to generate the data voltage provided to the plurality of pixels; The reduction step parameter represents the number of light emission cycles increased when the frame rate is reduced; Add a step parameter to indicate the number of light emission cycles that are reduced when the frame rate is increased; The reduced hold-frame parameter indicates the number of frame intervals with the reduced frame frequency when the frame frequency is reduced; and The added hold frame parameter indicates the number of frame intervals with the increased frame frequency when the frame frequency increases.

6. The organic light-emitting display device according to claim 5, characterized in that, If no input image data is received in the current frame interval, the current frame interval ends when the time in the current frame interval becomes the planned frame time in the current frame interval. The planned frame time in the next frame interval is calculated by adding the light emission period to the planned frame time in the current frame interval and the product of the reduction step parameter in the current frame interval. The parameter combination in the next frame interval is determined to be the parameter combination that corresponds to the planned frame time in the next frame interval among the plurality of parameter combinations.

7. The organic light-emitting display device according to claim 6, characterized in that, The panel driving unit further stores the maximum frame parameters corresponding to the maximum frame time. If the time for which the product of the emission period and the reduction step parameter in the current frame interval is added to the planned frame time in the current frame interval is greater than the maximum frame time, the planned frame time in the next frame interval is determined to be the maximum frame time.

8. The organic light-emitting display device according to claim 5, characterized in that, When the input image data is received in the current frame interval, the end frame time of the current frame interval is calculated by subtracting the product of the emission period and the addition step parameter in the current frame interval from the planned frame time in the current frame interval. The current frame interval ends when the time of the current frame interval becomes the end frame time of the current frame interval. The planned frame time in the next frame interval is determined to be the end frame time of the current frame interval. The parameter combination in the next frame interval is determined to be the parameter combination among the plurality of parameter combinations that corresponds to the planned frame time in the next frame interval.

9. The organic light-emitting display device according to claim 8, characterized in that, The panel driving unit further stores the minimum frame parameters corresponding to the minimum frame time. If the time taken by subtracting the product of the emission period and the addition step parameter in the current frame interval from the planned frame time in the current frame interval is less than the minimum frame time, the planned frame time in the next frame interval is determined to be the minimum frame time.

10. The organic light-emitting display device according to claim 9, characterized in that, The panel driving unit further stores critical frame parameters corresponding to the frame time threshold. If the time taken by subtracting the product of the emission period and the addition step parameter in the current frame interval from the planned frame time in the current frame interval is greater than the frame time threshold, the planned frame time in the next frame interval is determined as the minimum frame time.

11. An organic light-emitting display device, characterized in that, include: The display panel includes multiple pixels; as well as The panel driver unit drives the display panel. The panel driving unit is configured as follows: The display panel is driven at a frame rate corresponding to 1 / N of the emission frequency, such that each frame interval becomes N times the emission period, where N is an integer greater than or equal to 2. Without receiving input image data, the frame rate of the display panel is gradually reduced, and Upon receiving the input image data, the frame rate of the display panel is progressively increased. The panel driver unit stores game mode parameters indicating whether the working mode is game mode, and maximum frame parameters corresponding to the maximum frame time. When the game mode parameter represents the game mode, the planned frame time in each frame interval is determined to be the maximum frame time. The current frame interval ends when the input image data is received, and the parameter combination in the next frame interval is determined based on the end frame time of the current frame interval.

12. A driving method for an organic light-emitting display device, comprising: The step of driving the display panel of the organic light-emitting display device with a frame rate corresponding to 1 / N of the light emission frequency, so that each frame interval becomes N times the light emission period, where N is an integer greater than 2; The step of progressively reducing the frame rate of the display panel without receiving input image data; The step of progressively increasing the frame rate of the display panel upon receiving the input image data; The step of determining the planned frame time for the next frame interval based on the planned frame time in the current frame interval and whether the input image data is received in the current frame interval; and The step of determining the parameter combination in the next frame interval based on the planned frame time in the next frame interval.

13. The driving method for the organic light-emitting display device according to claim 12, characterized in that, The step of progressively reducing the frame rate of the display panel includes: progressively increasing the number of light emission cycles within the frame interval without receiving the input image data. The step of progressively increasing the frame rate of the display panel includes the step of progressively decreasing the number of light emission cycles within the frame interval while receiving the input image data.

14. The driving method for the organic light-emitting display device according to claim 12, characterized in that, The step of progressively reducing the frame rate of the display panel includes: when no input image data is received within the planned frame time for the current frame interval, increasing the planned frame time for the next frame interval by M light emission cycles compared to the planned frame time for the current frame interval, where M is an integer greater than or equal to 1. The step of progressively increasing the frame rate of the display panel includes: when receiving the input image data within the planned frame time for the current frame interval, reducing the planned frame time for the next frame interval by K light emission cycles compared to the planned frame time for the current frame interval, where K is an integer greater than or equal to 1.

15. The driving method for the organic light-emitting display device according to claim 12, characterized in that, Also includes: If the frame rate of the display panel is changed, the step of generating the gamma combination of data voltages supplied to the multiple pixels of the display panel is changed.

16. The driving method for the organic light-emitting display device according to claim 12, characterized in that, The step of progressively reducing the frame rate of the display panel includes: The step of ending the current frame interval when the time of the current frame interval becomes the planned frame time in the current frame interval if the input image data is not received in the current frame interval. The step of calculating the planned frame time in the next frame interval by adding the emission period to the planned frame time in the current frame interval and the product of the reduction step parameter in the current frame interval; and The step of determining the parameter combination in the next frame interval based on the planned frame time in the next frame interval.

17. The driving method for the organic light-emitting display device according to claim 12, characterized in that, The step of progressively increasing the frame rate of the display panel includes: When the input image data is received in the current frame interval, the step of calculating the end frame time of the current frame interval by subtracting the product of the emission period and the increase step parameter in the current frame interval from the planned frame time in the current frame interval; The step of ending the current frame interval when the time of the current frame interval becomes the end frame time of the current frame interval; The step of determining the planned frame time in the next frame interval as the end frame time of the current frame interval; and The step of determining the parameter combination in the next frame interval based on the planned frame time in the next frame interval.

18. The driving method for the organic light-emitting display device according to claim 17, characterized in that, The steps for determining the planned frame time in the next frame interval include: The step of determining the planned frame time in the next frame interval as the end frame time of the current frame interval when the time after subtracting the product of the emission period and the increase step parameter in the current frame interval from the planned frame time in the current frame interval is less than or equal to the frame time threshold; and The step of determining the planned frame time in the next frame interval as the minimum frame time when the time obtained by subtracting the product of the emission period and the increase step parameter in the current frame interval from the planned frame time in the current frame interval is greater than the frame time threshold.

19. A driving method for an organic light-emitting display device, comprising: The step of driving the display panel of the organic light-emitting display device with a frame rate corresponding to 1 / N of the light emission frequency, so that each frame interval becomes N times the light emission period, where N is an integer greater than 2; The step of progressively reducing the frame rate of the display panel without receiving input image data; The step of progressively increasing the frame rate of the display panel upon receiving the input image data; Steps to determine whether the game mode parameter represents a game mode; In the case where the game mode parameter represents the game mode, the step of determining the planned frame time in each frame interval as the maximum frame time; The step of ending the current frame interval when receiving the input image data; and The step of determining the parameter combination in the next frame interval based on the end frame time in the current frame interval.

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