Display apparatus, display apparatus operation method, and non-transitory computer readable medium

Abstract

A display apparatus, a display apparatus operating method, and a non-transitory computer readable medium are disclosed. A display apparatus includes a display panel, a first emission driver, a second emission driver, and an emission driver controller. The first emission driver and the second emission driver are on different sides of the display panel and each applies an emission signal to the display panel. The emission driver controller selectively drives the first emission driver and the second emission driver according to a deterioration stress of the first emission driver and the second emission driver.

Description

Technical Field

[0001] One or more embodiments described herein relate to a display device, a method of operating a display device, and a non-transitory computer-readable medium. Background Technology

[0002] Display devices may include one or more transmitter drivers for controlling the display panel. Over time, the performance of the transmitter drivers may deteriorate significantly (e.g., due to deterioration stress) to the point of causing flickering or flare. This, in turn, may reduce the lifespan of the transmitter drivers and thus the lifespan of the display device. Summary of the Invention

[0003] One or more embodiments of the present invention provide a display device that can increase or maximize the lifespan of the transmitter driver by reducing or minimizing the use of the transmitter driver.

[0004] One or more embodiments of the present invention provide a method for operating a display device, the method of operating the display device being able to increase or maximize the lifespan of the transmit driver by reducing or minimizing the use of the transmit driver.

[0005] According to one or more embodiments, a display device includes: a display panel including a plurality of pixels; a first emission driver configured to apply an emission signal to the display panel and disposed on a first side of the display panel; a second emission driver configured to apply an emission signal to the display panel and disposed on a second side of the display panel different from the first side; and an emission driver controller configured to selectively drive the first emission driver and the second emission driver according to degradation stress of the first emission driver and the second emission driver.

[0006] In one embodiment, the transmitter driver controller may include: a data converter configured to receive luminance data and convert the luminance data into active matrix organic light-emitting diode turn-off ratio (AOR) data corresponding to the luminance data; a stress calculator configured to calculate the degradation stress of the first transmitter driver and the second transmitter driver based on the AOR data; and a driver selector configured to control the operation of the first transmitter driver and the second transmitter driver according to the degradation stress.

[0007] In an embodiment, the driver selector can control the operation of the first and second transmitter drivers by comparing a first degradation stress representing the degradation stress of the first transmitter driver with a second degradation stress representing the degradation stress of the second transmitter driver.

[0008] In an embodiment, the data converter can divide the luminance data into a first band to a tenth band and convert the luminance data into AOR data corresponding to each of the first band to the tenth band.

[0009] In one embodiment, the data converter may store a lookup table defining the AOR data corresponding to each of the first to tenth bands. In other words, the lookup table includes information indicating the band relative to the AOR data.

[0010] In one embodiment, the stress calculator can calculate the degradation stress by accumulating the AOR data based on the drive times of the first and second transmitter drivers.

[0011] In an embodiment, when the first degradation stress is less than the second degradation stress, the driver selector can control the first transmit driver to operate and the second transmit driver to not operate.

[0012] In an embodiment, when the first degradation stress is greater than the second degradation stress, the driver selector can control the first transmit driver to not operate and the second transmit driver to operate.

[0013] In an embodiment, when both the first degradation stress and the second degradation stress are greater than the reference degradation stress, the driver selector can be configured to control both the first transmit driver and the second transmit driver to operate.

[0014] In an embodiment, the transmit driver controller may be configured to accumulate the AOR data to store usage and degradation data of the switching elements in the first and second transmit drivers.

[0015] According to one or more embodiments, a method of operating a display device includes: calculating the degradation stress of a first transmitter driver and a second transmitter driver; and controlling the first transmitter driver and the second transmitter driver to operate selectively based on the degradation stress.

[0016] In one embodiment, calculating the degradation stress may include: receiving luminance data; converting the luminance data into AOR data corresponding to the luminance data; and calculating the degradation stress of the first transmit driver and the second transmit driver based on the AOR data.

[0017] In an embodiment, controlling the first transmitter driver and the second transmitter driver may include: controlling the operation of the first transmitter driver and the second transmitter driver by comparing a first degradation stress representing the degradation stress of the first transmitter driver with a second degradation stress representing the degradation stress of the second transmitter driver.

[0018] In an embodiment, calculating the degradation stress may include: dividing the brightness data into a first band to a tenth band; and converting the brightness data into AOR data corresponding to each of the first band to the tenth band.

[0019] In one embodiment, calculating the degradation stress may include storing a lookup table that defines the AOR data corresponding to each of the first to tenth bands. In other words, the lookup table includes information indicating the band relative to the AOR data.

[0020] In an embodiment, calculating the degradation stress may include: accumulating the AOR data based on the drive times of the first transmit driver and the second transmit driver to calculate the degradation stress.

[0021] In an embodiment, controlling the first transmitter driver and the second transmitter driver may include: controlling the first transmitter driver to operate and the second transmitter driver not to operate when the first degradation stress is less than the second degradation stress.

[0022] In an embodiment, controlling the first transmitter driver and the second transmitter driver may include: controlling the first transmitter driver to not operate and the second transmitter driver to operate when the first degradation stress is greater than the second degradation stress.

[0023] In an embodiment, controlling the first transmitter driver and the second transmitter driver may include: controlling both the first transmitter driver and the second transmitter driver to operate when both the first degradation stress and the second degradation stress are greater than a reference degradation stress.

[0024] In an embodiment, the method may further include: accumulating the AOR data to store usage data and degradation data of the switching elements in the first transmit driver and the second transmit driver.

[0025] According to one or more embodiments, a non-transitory computer-readable medium is configured to store instructions that, when executed by one or more processors, cause the one or more processors to: determine the stress of a first transmitter driver of a display panel; determine the stress of a second transmitter driver of the display panel; and control the operation of at least one of the first transmitter driver and the second transmitter driver based on the stress of each of the first transmitter driver and the second transmitter driver. When the stress of the first transmitter driver is greater than the stress of the second transmitter driver, the one or more processors are configured to execute the instructions to control the activation of the second transmitter driver to reduce the difference between the stresses of the first transmitter driver and the second transmitter driver. Attached Figure Description

[0026] The above and other features of the present invention will become more apparent from the detailed description of its embodiments with reference to the accompanying drawings, in which:

[0027] Figure 1 An embodiment of the display device is shown;

[0028] Figure 2 An embodiment of the transmit driver is shown;

[0029] Figure 3 An embodiment of the transmit driver is shown;

[0030] Figure 4 An example of the deterioration stress of a switching element is shown;

[0031] Figure 5 An embodiment of the transmit driver controller is shown;

[0032] Figure 6 An embodiment of a method for operating a transmit driver controller is shown;

[0033] Figure 7 An example of a lookup table for a transmitter driver controller is shown;

[0034] Figure 8 An embodiment including a timing controller, a first transmit driver, a second transmit driver, and a transmit line is shown;

[0035] Figure 9 An embodiment is shown when the first transmitter driver is operating and the second transmitter driver is not operating;

[0036] Figure 10 An embodiment is shown when the first transmitter driver is not operating and the second transmitter driver is operating;

[0037] Figure 11 An embodiment is shown when the first and second transmitter drivers are operating;

[0038] Figure 12 An embodiment of the electronic device is shown; and

[0039] Figure 13 An embodiment of an electronic device is shown. Detailed Implementation

[0040] Figure 1 An embodiment of the display device is shown; and Figure 2 An embodiment of the transmit driver is shown. In detail, Figure 1 This is a block diagram illustrating a display device 10 according to an embodiment, and Figure 2 It shows that it can be included Figure 1 The display device 10 or coupled to Figure 1 A block diagram of the display panel 100, the transmitter driver 600, and the signal lines of the display device 10.

[0041] refer to Figure 1 The display device 10 may include a display panel 100 and a display panel driver 120. The display panel driver 120 may include a timing controller 200, a gate driver 300, a gamma reference voltage generator 400, a data driver 500, and a transmit driver 600. In addition, the display panel driver 120 may include or be coupled to a transmit driver controller 210.

[0042] The display panel 100 may include a display area for displaying an image and a peripheral area adjacent to the display area. The display panel 100 may include a plurality of gate lines GL, a plurality of data lines DL, a plurality of emitter lines EL, and a plurality of pixels electrically connected to each of the gate lines GL, data lines DL, and emitter lines EL. The gate lines GL may extend in a first direction D1, and the data lines DL may extend in a second direction D2 intersecting the first direction D1. The emitter lines EL may also extend in the first direction D1.

[0043] The timing controller 200 can receive input image data IMG and input control signal CONT from an external device. For example, the input image data IMG may include red image data, green image data, and blue image data. In one embodiment, the input image data IMG may include white image data. In another embodiment, the input image data IMG may include magenta image data, yellow image data, and cyan image data, or image data corresponding to another color combination. The input control signal CONT may include a master clock signal and a data enable signal. The input control signal CONT may further include a vertical synchronization signal and a horizontal synchronization signal.

[0044] The timing controller 200 can generate a first control signal CONT1, a second control signal CONT2, a third control signal CONT3, a fourth control signal CONT4, and a data signal DATA based on the input image data IMG and the input control signal CONT.

[0045] The timing controller 200 can generate a first control signal CONT1 for controlling the operation of the gate driver 300 based on the input control signal CONT, and can output the generated first control signal CONT1 to the gate driver 300. The first control signal CONT1 may include a vertical start signal and a gate clock signal.

[0046] The timing controller 200 can generate a second control signal CONT2 for controlling the operation of the data driver 500 based on the input control signal CONT, and can output the generated second control signal CONT2 to the data driver 500. The second control signal CONT2 may include a horizontal start signal and a load signal.

[0047] The timing controller 200 can generate a data signal DATA based on the input image data IMG. The timing controller 200 can output the data signal DATA to the data driver 500.

[0048] The timing controller 200 can generate a third control signal CONT3 based on the input control signal CONT for controlling the operation of the gamma reference voltage generator 400. The timing controller 200 can output the third control signal CONT3 to the gamma reference voltage generator 400.

[0049] The timing controller 200 can generate a fourth control signal CONT4 based on the input control signal CONT for controlling the operation of the transmit driver 600. The timing controller 200 can output the fourth control signal CONT4 to the transmit driver 600.

[0050] The gate driver 300 can generate a gate signal for driving the gate line GL in response to a first control signal CONT1 from the timing controller 200. The gate driver 300 can output the gate signal to the gate line GL. For example, the gate driver 300 can be integrated into the display panel 100, such as by mounting the gate driver 300 on the display panel 100.

[0051] The gamma reference voltage generator 400 can generate a gamma reference voltage VGREF in response to a third control signal CONT3 from the timing controller 200. The gamma reference voltage generator 400 can provide the gamma reference voltage VGREF to the data driver 500. The gamma reference voltage VGREF can have a value corresponding to the data signal DATA. The gamma reference voltage generator 400 can be located in or coupled to the timing controller 200, or it can be located in or coupled to the data driver 500.

[0052] The data driver 500 can receive a second control signal CONT2 and a data signal DATA from the timing controller 200, and can also receive a gamma reference voltage VGREF from the gamma reference voltage generator 400. The data driver 500 can use the gamma reference voltage VGREF to convert the data signal DATA into a data voltage of analog type. The data driver 500 can output this data voltage to the data line DL.

[0053] The transmit driver 600 can generate a transmit signal for driving the transmit line EL in response to a fourth control signal CONT4 from the timing controller 200. The transmit driver 600 can output this transmit signal to the transmit line EL.

[0054] exist Figure 1 In this embodiment, a gate driver 300 is disposed on a first side of the display panel 100, and an emitter driver 600 is disposed on a second side of the display panel 100 opposite to the first side. In one embodiment, the gate driver 300 and the emitter driver 600 may be disposed on the same side relative to the display panel 100. In another embodiment, the gate driver 300 and the emitter driver 600 may be integrally formed.

[0055] refer to Figure 1 and Figure 2According to an embodiment, the transmitter driver 600 may include a first transmitter driver 610 and a second transmitter driver 620. For example, the first transmitter driver 610 may be located on a first side of the display panel 100, and the second transmitter driver 620 may be located on a second side of the display panel 100 opposite to the first side. The first transmitter driver 610 may generate a transmitter signal for driving transmitter lines EL11 to EL1N in response to a fourth control signal CONT4 from the timing controller 200. The first transmitter driver 610 may output the generated transmitter signal to transmitter lines EL11 to EL1N in a predetermined manner. For example, the first transmitter driver 610 may sequentially output the transmitter signal to transmitter lines EL11 to EL1N.

[0056] The second transmit driver 620 can generate transmit signals for driving transmit lines EL21 to EL2N in response to a fourth control signal CONT4 from the timing controller 200. The second transmit driver 620 can output the generated transmit signals to transmit lines EL21 to EL2N in a predetermined manner. For example, the second transmit driver 620 can sequentially output transmit signals to transmit lines EL21 to EL2N. In one embodiment, the first transmit driver 610 and the second transmit driver 620 can operate alternately. In another embodiment, the first transmit driver 610 and the second transmit driver 620 can operate simultaneously.

[0057] The display panel driver 120 may include an emitter driver controller 210 that controls a first emitter driver 610 and a second emitter driver 620 to selectively operate according to degradation stresses on the first emitter driver 610 and the second emitter driver 620. For example, the emitter driver controller 210 may receive luminance data DBV and convert the luminance data DBV into AOR data corresponding to the luminance data DBV, where DBV represents a digital luminance value, AOR represents the AMOLED off-ratio, and AMOLED represents an active-matrix organic light-emitting diode. The emitter driver controller 210 may calculate the degradation stresses on the first emitter driver 610 and the second emitter driver 620 based on the AOR data. The emitter driver controller 210 may then control the operation of the first emitter driver 610 and the second emitter driver 620 according to these degradation stresses.

[0058] exist Figure 1 In this configuration, the transmit driver controller 210 is a standalone configuration. In one embodiment, the transmit driver controller 210 may be located external to the timing controller 200 to provide transmit driver control signals to the timing controller 200. In another embodiment, the transmit driver controller 210 may be located internal to the timing controller 200 and may be a component of the timing controller 200.

[0059] Figure 3 An embodiment of the transmit driver is shown; and Figure 4 An example of the deterioration stress of a switching element is shown. In detail, Figure 3 It shows Figure 1 A circuit diagram of an embodiment of the transmit driver 600 in the display device 10. Figure 4 This is a table showing an example of the degradation stress of a switching element based on the transmit start signal EFLM.

[0060] refer to Figures 1 to 3 Each of the first transmit driver 610 and the second transmit driver 620 may include a ninth switching element T9 connected between a first gate power voltage terminal (to which a first gate power voltage VGH is applied) and a transmit signal output terminal (from which a transmit signal EM is output). Each of the first transmit driver 610 and the second transmit driver 620 may also include a tenth switching element T10 connected between a second gate power voltage terminal (to which a second gate power voltage VGL is applied) and the transmit signal output terminal. The first transmit driver 610 and the second transmit driver 620 may include a pull-down circuit for pulling the transmit signal EM down to the second gate power voltage VGL. The pull-down circuit may include a first switching element T1, a second switching element T2, a third switching element T3, a tenth switching element T10, and a twelfth switching element T12.

[0061] Each of the first transmit driver 610 and the second transmit driver 620 may include a pull-up circuit for pulling the transmit signal EM up to a first gate power voltage VGH. The pull-up circuit may include a fourth switching element T4, a fifth switching element T5, a sixth switching element T6, a seventh switching element T7, an eighth switching element T8, a ninth switching element T9, and an eleventh switching element T11.

[0062] Each of the first transmit driver 610 and the second transmit driver 620 may include a first capacitor C1, a second capacitor C2, and a third capacitor C3. The first capacitor C1 may include a first electrode connected to a first gate power voltage terminal and a second electrode connected to a seventh node X7. The second capacitor C2 may include a first electrode connected to a fifth node X5 and a second electrode connected to a sixth node X6. The third capacitor C3 may include a first electrode connected to a second node X2 and a second electrode connected to a third node X3. In one embodiment, the first capacitor C1 may be a stabilizing capacitor for stabilizing the voltage of the seventh node X7. The second capacitor C2 may be a boosting capacitor for sufficiently reducing the voltage of the seventh node X7 to a low level. The third capacitor C3 may be a boosting capacitor for sufficiently reducing (i.e., boosting) the voltage of the eighth node X8 to a low level.

[0063] Depending on the count of the activation duration of the transmit start signal EFLM, the first switching element T1 through the twelfth switching element T12 can receive different degradation stresses. For example, even with the same AOR data, each of the first switching element T1 through the twelfth switching element T12 can have different degrees of degradation stress.

[0064] refer to Figure 4 Due to the activation duration of the transmit start signal EFLM, the receiver... Figure 3The first switching element T1, which represents the input signal IN (e.g., the transmit start signal EFLM or carry signal), may be susceptible to degradation to some extent. The second switching element T2 may be susceptible to degradation to some extent due to the activation duration of the transmit start signal EFLM. The third switching element T3 may be susceptible to degradation to some extent due to the deactivation duration of the transmit start signal EFLM. The fourth switching element T4 may be susceptible to degradation to some extent due to the deactivation duration of the transmit start signal EFLM. The fifth switching element T5 may be susceptible to degradation to some extent due to the deactivation duration of the transmit start signal EFLM. The sixth switching element T6 may be susceptible to degradation to some extent due to the deactivation duration of the transmit start signal EFLM. The seventh switching element T7 may be susceptible to degradation to some extent due to the activation duration of the transmit start signal EFLM. The eighth switching element T8 may be susceptible to degradation to some extent due to the activation duration of the transmit start signal EFLM. The ninth switching element T9 may be susceptible to degradation to some extent due to the activation duration of the transmit start signal EFLM. The tenth switching element T10 may be susceptible to some degree of degradation due to the deactivation duration of the transmit start signal EFLM. The eleventh switching element T11 may be susceptible to some degree of degradation due to the activation duration of the transmit start signal EFLM. The twelfth switching element T12 may be susceptible to some degree of degradation due to the activation duration of the transmit start signal EFLM.

[0065] exist Figure 4 The activation duration of the transmit start signal EFLM is shown as low (based on the assumption that the first switching element T1 to the twelfth switching element T12 are implemented as p-channel metal-oxide-semiconductor (PMOS) transistors). In one embodiment, when the first switching element T1 to the twelfth switching element T12 are implemented as n-channel metal-oxide-semiconductor (NMOS) transistors, the activation duration of the transmit start signal EFLM can be high.

[0066] During operation, based on AOR data, at least some (if not all) of the first switching elements T1 to the twelfth switching elements T12 may be subjected to varying degrees of degradation stress. Therefore, the degradation stress of the first switching elements T1 to the twelfth switching elements T12 can be calculated individually based on the transmit start signal to accurately calculate the overall degradation stress of the transmit driver 600. In one embodiment, the transmit driver controller 210 can calculate the first and second degradation stresses by accumulating AOR data over time, thereby enabling the transmit driver controller 210 to calculate the degradation stress of each of the first switching elements T1 to the twelfth switching elements T12.

[0067] Figure 5 An embodiment of the transmit driver controller is shown. In detail, Figure 5 This is a block diagram illustrating an embodiment of the transmit driver controller 210, which, for example, may be included in... Figure 1 The display device 10 or coupled to Figure 1 Display device 10.

[0068] refer to Figure 5 The transmitter driver controller 210 may include a data converter 211, a stress calculator 212, and a driver selector 213. The data converter 211 receives luminance data DBV and converts the luminance data DBV into AOR data corresponding to the luminance data DBV. The stress calculator 212 calculates the degradation stress of the first transmitter driver 610 and the second transmitter driver 620 based on the AOR data. The driver selector 213 controls the operation of the first transmitter driver 610 and the second transmitter driver 620 according to the degradation stress.

[0069] Data converter 211 can divide luminance data DBV into bands one through ten and convert the luminance data DBV into AOR data corresponding to each of the bands one through ten. Data converter 211 can store a lookup table specifying the AOR data corresponding to each of the bands one through ten. For example, the lookup table stored in data converter 211 and specifying the AOR data can be data input by the user.

[0070] The stress calculator 212 can calculate degradation stress by accumulating AOR data based on the drive times of the first transmit driver 610 and the second transmit driver 620. For example, the stress calculator 212 can accumulate AOR data based on the drive times of the first transmit driver 610 and the second transmit driver 620, thereby enabling the stress calculator 212 to calculate the degradation stress of each of the first transmit driver 610 and the second transmit driver 620. In one embodiment, the stress calculator 212 can store the drive times of the first transmit driver 610 and the second transmit driver 620. The stress calculator 212 can calculate a first degradation stress by accumulating AOR data converted by the data converter 211 based on the drive time of the first transmit driver 610. Additionally, the stress calculator 212 can calculate a second degradation stress by accumulating AOR data converted by the data converter 211 based on the drive time of the second transmit driver 620.

[0071] Driver selector 213 can compare a first degradation stress (indicating the degradation stress of the first transmit driver 610) with a second degradation stress (indicating the degradation stress of the second transmit driver 620) and subsequently control the operation of one or more of the first transmit driver 610 and the second transmit driver 620. For this purpose, driver selector 213 can output a transmit driver control signal CONTEM. For example, when the first degradation stress is less than the second degradation stress, driver selector 213 can control the first transmit driver 610 to operate and the second transmit driver 620 to not operate. When the first degradation stress is greater than the second degradation stress, driver selector 213 can control the first transmit driver 610 to not operate and the second transmit driver 620 to operate.

[0072] Display device 10 including transmit driver controller 210 (in Figure 1 Therefore, the lifespan of the first transmitter driver 610 and the second transmitter driver 620 can be improved or maximized by dispersing the deterioration stress on the first transmitter driver 610 and the second transmitter driver 620. (See reference) Figure 6 An embodiment corresponding to the operation of the data converter 211, stress calculator 212, and driver selector 213 in the transmit driver controller 210 is described.

[0073] The transmitter driver controller 210 can accumulate AOR data and store usage and degradation data of the switching elements in the first transmitter driver 610 and the second transmitter driver 620. For example, using logs of the switching element usage data and degradation data, the lifespan of the first transmitter driver 610 and the second transmitter driver 620 can be modeled for user observation. Furthermore, using logs of the switching element usage data and degradation data, the user can easily determine the cause of a failure or abnormal operation of one or both of the first transmitter driver 610 and the second transmitter driver 620.

[0074] Figure 6 An embodiment of a method for operating a transmit driver controller is shown; and Figure 7 An example of a lookup table for a transmit driver controller is shown. In detail, Figure 6 It shows the operation Figure 5 A flowchart of an embodiment of the method of the transmit driver controller 210, and Figure 7 This shows that, according to the method, it can be derived from... Figure 5 An example of a lookup table used by the transmit driver controller 210.

[0075] refer to Figure 6 and Figure 7The method includes: in operation S100, data converter 211 converts luminance data DBV into AOR data corresponding to luminance data DBV.

[0076] In operation S200, stress calculator 212 can calculate the deterioration stress of the first transmitter driver 610 and the second transmitter driver 620 based on AOR data.

[0077] In operation S300, the driver selector 213 can determine whether both the first degradation stress and the second degradation stress are greater than the reference degradation stress.

[0078] In operation S400, when either the first degradation stress or the second degradation stress is less than the reference degradation stress, the driver selector 213 can compare the first degradation stress with the second degradation stress.

[0079] In operation S500, when the first degradation stress is less than the second degradation stress, the driver selector 213 can control the first transmitter driver 610 to operate and the second transmitter driver 620 to not operate.

[0080] In operation S600, when the first deterioration stress is greater than the second deterioration stress, the driver selector 213 can control the first transmitter driver 610 to not operate and the second transmitter driver 620 to operate.

[0081] In operation S700, when both the first degradation stress and the second degradation stress are greater than the reference degradation stress, the driver selector 213 can control both the first transmitter driver and the second transmitter driver to operate.

[0082] In operation S100, as previously noted, data converter 211 can convert luminance data DBV into AOR data corresponding to luminance data DBV. For example, where applicable, data converter 211 can divide luminance data DBV into a predetermined number of bands (e.g., band 1 to band 10) and can convert luminance data DBV into AOR data corresponding to each of the bands from band 1 to band 10. In another embodiment, a different predetermined number of bands can be used.

[0083] Data converter 211 can store or be coupled to access a lookup table that includes AOR data corresponding to the first through tenth bands. For example, the lookup table may include data entered by the user. In an embodiment, the luminance data (DBV) in nits received by data converter 211 can be processed by analyzing the input image data (IMG) (see...). Figure 1The brightness data (DBV) is obtained by numerical conversion. The DBV brightness data can be divided into bands one through ten. In this case, bands one through ten of the DBV brightness data can be converted into AOR data respectively.

[0084] AOR data can have a predetermined number of patterns (e.g., 7 patterns). In this case, each of the first to tenth bands of the luminance data DBV can be converted into 7 patterns of AOR data. The values ​​of the 7 patterns of the converted AOR data can be, for example, 0.1%, 40%, 70%, 85%, 90%, 93%, and 96%. In another embodiment, these values ​​can be different. Data converter 211 can transmit the AOR data converted from luminance data DBV to stress calculator 212.

[0085] In operation S200, the stress calculator 212 can calculate the degradation stress of the first transmitter driver 610 and the second transmitter driver 620 based on the AOR data. This can be achieved as follows: The stress calculator 212 can accumulate AOR data based on the drive time of the first transmitter driver 610 and the second transmitter driver 620. The stress calculator 212 can then calculate the degradation stress of each of the first transmitter driver 610 and the second transmitter driver 620. In one embodiment, the stress calculator 212 can store the drive time of the first transmitter driver 610 and the second transmitter driver 620.

[0086] The stress calculator 212 can calculate a first degradation stress by accumulating the AOR data converted by the data converter 211 based on the drive time of the first transmit driver 610. The stress calculator 212 can calculate a second degradation stress by accumulating the AOR data converted by the data converter 211 based on the drive time of the second transmit driver 620. The first degradation stress can be proportional to the drive time of the first transmit driver 610, and the second degradation stress can be proportional to the drive time of the second transmit driver 620.

[0087] The degradation stress data can vary depending on the AOR data corresponding to the first to tenth bands. For example, the degradation stress of the first band can be increased proportionally to the AOR data corresponding to a first value (e.g., 0.1%) and the drive time (e.g., 10H) for the transmitter drivers 610 and 620. The degradation stress of the tenth band can be increased proportionally to the AOR data corresponding to a seventh value (e.g., 96%) and the drive time (e.g., 600H) for the transmitter drivers 610 and 620. The degradation stress of the second to ninth bands can also be calculated in a similar manner. Each of the first switching element T1 to the twelfth switching element T12 in the first transmitter driver 610 and the second transmitter driver 620 can have different AOR data that are susceptible to degradation stress. The stress calculator 212 can calculate the degradation stress of each of the first switching element T1 to the twelfth switching element T12 by calculating the first degradation stress and the second degradation stress using the AOR data.

[0088] In operation S300, driver selector 213 can determine whether both the first degradation stress and the second degradation stress are greater than a reference degradation stress. The reference degradation stress can be a predetermined degradation stress (e.g., a minimum or other level) under which each of the first transmit driver 610 and the second transmit driver 620 is operable (e.g., operates stably or at a desired performance level). For example, when the first degradation stress is greater than the reference degradation stress, the first transmit driver 610 may operate unstablely and may output the transmit signal EM to the transmit line EL unstablely. When the second degradation stress is greater than the reference degradation stress, the second transmit driver 620 may operate unstablely and may output the transmit signal EM to the transmit line EL unstablely.

[0089] In operation S400, when either the first degradation stress or the second degradation stress is less than the reference degradation stress, the driver selector 213 can compare the first degradation stress with the second degradation stress. For example, when both the first degradation stress and the second degradation stress are less than the reference degradation stress, both the first transmitter driver 610 and the second transmitter driver 620 can operate stably. In this case, the driver selector 213 can compare the first degradation stress (indicating the degradation stress of the first transmitter driver 610) with the second degradation stress (indicating the degradation stress of the second transmitter driver 620), thereby enabling the driver selector 213 to control the operation of the first transmitter driver 610 and the second transmitter driver 620.

[0090] In operation S500, for example, when the first degradation stress is less than the second degradation stress, the driver selector 213 can control the first transmitter driver 610 to operate and the second transmitter driver 620 to not operate. Therefore, when the first degradation stress is less than the second degradation stress, the second transmitter driver 620 can not operate, thereby reducing or minimizing the second degradation stress.

[0091] In operation S600, for example, when the first degradation stress is greater than the second degradation stress, the driver selector 213 can control the first transmitter driver 610 to not operate and the second transmitter driver 620 to operate. Therefore, when the first degradation stress is greater than the second degradation stress, the first transmitter driver 610 can not operate, thereby reducing or minimizing the first degradation stress.

[0092] As a result, by dispersing or adjusting the first and second degradation stresses, the transmitter driver controller 210 can improve or maximize the lifespan of the first transmitter driver 610 and the second transmitter driver 620.

[0093] In operation S700, when both the first degradation stress and the second degradation stress are greater than the reference degradation stress, the driver selector 213 can control the operation of both the first and second emission drivers. For example, when both the first and second degradation stresses are greater than the reference degradation stress, the driver selector 213 can cause the first emission driver 610 and the second emission driver 620 to operate stably. In this case, the driver selector 213 can control the operation of both the first emission driver 610 and the second emission driver 620, thereby enabling the emission signal to be stably output to the emission line EL. (In one or more embodiments, the emission signals may have the same or substantially the same format and can be collectively referred to as "emission signals" in this sense, although, for example, as described herein, emission signals may be activated or applied at different times relative to different pixels or emission lines.)

[0094] As described above, according to one embodiment of the present invention, the transmitter driver controller 210 can adjust the usage of the first transmitter driver 610 and the second transmitter driver 620. The transmitter driver controller 210 can reduce or minimize the degradation stress of the first switching elements T1 to the twelfth switching elements T12 in the first transmitter driver 610 and the second transmitter driver 620. As a result, for example, by distributing the first and second degradation stresses in a manner that favors the lower degree of degradation in the first transmitter driver 610 and the second transmitter driver 620 and / or in a manner that balances or prioritizes the degradation stresses between the first transmitter driver 610 and the second transmitter driver 620, the transmitter driver controller 210 can improve or maximize the lifetime of the first transmitter driver 610 and the second transmitter driver 620. Furthermore, when both the first and second degradation stresses are greater than a reference degradation stress, the transmitter driver controller 210 can control the operation of both the first transmitter driver 610 and the second transmitter driver 620, thereby enabling a stable output of the transmission signal to the transmission line EL.

[0095] Figure 8 An embodiment including a timing controller, a first transmit driver, a second transmit driver, and a transmit line is shown. In detail, Figure 8 It shows that it contains Figure 1 A block diagram of the timing controller 200, the first transmitter driver 610, the second transmitter driver 620, and the transmitter line EL in the display device 10.

[0096] refer to Figure 5 and Figure 8 The timing controller 200 can generate a transmit start signal EFLM, a first clock signal ECLK1, and a second clock signal ECLK2 for driving the first transmit driver 610 and the second transmit driver 620.

[0097] The timing controller 200 can provide a first transmit start signal EFLM1 as a transmit start signal to the first transmit driver 610. The first transmit driver 610 can generate a first transmit signal in response to the first transmit start signal EFLM1. The first transmit driver 610 can include a plurality of first stages ST11 to ST1(n-1) and ST1n to ST1N respectively connected to a plurality of first transmit lines EL11 to EL1(n-1) and EL1n to EL1N of the display panel 100. The first transmit lines can be connected to a plurality of pixel circuits. In one embodiment, the first stages ST11 to ST1(n-1) and ST1n to ST1N can output a first transmit signal synchronized with a first clock signal ECLK1 and a second clock signal ECLK2 in response to the first transmit start signal EFLM1 (e.g., sequentially or according to another predetermined pattern).

[0098] The timing controller 200 can provide the second transmit start signal EFLM2 as a transmit start signal to the second transmit driver 620. The second transmit driver 620 can generate a second transmit signal in response to the second transmit start signal EFLM2. The second transmit driver 620 can include a plurality of second stages ST21 to ST2(n-1) and ST2n to ST2N respectively connected to a plurality of second transmit lines EL21 to EL2(n-1) and EL2n to EL2N of the display panel 100. The second transmit lines can be connected to a plurality of pixel circuits. In one embodiment, the second stages ST21 to ST2(n-1) and ST2n to ST2N can output (e.g., sequentially or according to another predetermined pattern) a second transmit signal synchronized with the first clock signal ECLK1 and the second clock signal ECLK2 in response to the second transmit start signal EFLM2.

[0099] For example, when the first degradation stress is less than the second degradation stress, the timing controller 200 can provide a first transmit start signal EFLM1 for driving the first transmit driver 610 and a second transmit non-start signal N_EFLM2 for not driving the second transmit driver 620. When the first degradation stress is greater than the second degradation stress, the timing controller 200 can provide a first transmit non-start signal N_EFLM1 for not driving the first transmit driver 610 and a second transmit start signal EFLM2 for driving the second transmit driver 620. When both the first degradation stress and the second degradation stress are greater than the reference degradation stress, the timing controller 200 can provide a first transmit start signal EFLM1 for driving the first transmit driver 610 and a second transmit start signal EFLM2 for driving the second transmit driver 620.

[0100] As described above, according to one or more embodiments of the present invention, the transmitter driver controller 210 can adjust the usage (e.g., usage time) of the first transmitter driver 610 and the second transmitter driver 620 so that the degradation stress is either uniformly distributed between the first transmitter driver 610 and the second transmitter driver 620 or distributed according to another distribution pattern or priority. Furthermore, the transmitter driver controller 210 can reduce or minimize the degradation stress of the first switching element T1 to the twelfth switching element T12 in the first transmitter driver 610 and the second transmitter driver 620.

[0101] Figure 9An embodiment is shown where the first transmit driver is operating and the second transmit driver is not operating. In detail, Figure 9 This is a timing diagram illustrating an embodiment of a signal that can be applied when the first transmit driver 610 is operating and the second transmit driver 620 is not operating.

[0102] refer to Figure 8 and Figure 9 The timing controller 200 can provide a first transmit start signal EFLM1 to the first transmit driver 610 and a second transmit non-start signal N_EFLM2 to the second transmit driver 620. For example, when the first degradation stress is less than the second degradation stress, the driver selector 213 (in Figure 5 The timing controller 200 can generate signals to control the operation of the first transmit driver 610 while the second transmit driver 620 remains inactive. In this case, the timing controller 200 can provide a first transmit start signal EFLM1 to the first transmit driver 610 and a second transmit non-start signal N_EFLM2 to the second transmit driver 620 to prevent it from driving. For example, the first stages ST11 to ST1(n-1) and ST1n to ST1N can output a first transmit signal EM11 synchronized with the first clock signal ECLK1 and the second clock signal ECLK2 in response to the first transmit start signal EFLM1. The second stages ST21 to ST2(n-1) and ST2n to ST2N can output a second transmit stop signal OFF21 in response to the second transmit non-start signal N_EFLM2.

[0103] As described above, according to one or more embodiments of the present invention, the transmit driver controller 210 can adjust the usage (e.g., usage time) of the second transmit driver 620, thereby dispersing the degradation stress of the second transmit driver 620 and reducing or minimizing the degradation stress of the first switching element T1 to the twelfth switching element T12 in the second transmit driver 620. As a result, the transmit driver controller 210 can improve or maximize the lifespan of the second transmit driver 620.

[0104] Figure 10 An embodiment is shown when the first transmit driver is not operating and the second transmit driver is operating. In detail, Figure 10 This is a timing diagram illustrating an embodiment of the signals when the first transmit driver 610 is not operating and the second transmit driver 620 is operating.

[0105] refer to Figure 8 and Figure 10The timing controller 200 can provide a first transmit non-start signal N_EFLM1 to the first transmit driver 610 and a second transmit start signal EFLM2 to the second transmit driver 620. For example, when the first degradation stress is greater than the second degradation stress, the driver selector 213 (in Figure 5 The timing controller 200 can generate signals to control the first transmit driver 610 to remain inactive and the second transmit driver 620 to operate. In this case, the timing controller 200 can provide a first transmit non-start signal N_EFLM1 to the first transmit driver 610 to prevent it from driving, and can provide a second transmit start signal EFLM2 to the second transmit driver 620 to drive it. For example, the first stages ST11 to ST1(n-1) and ST1n to ST1N can output a first transmit off signal OFF11 in response to the first transmit non-start signal N_EFLM1. The second stages ST21 to ST2(n-1) and ST2n to ST2N can output a second transmit signal EM21 synchronized with the first clock signal ECLK1 and the second clock signal ECLK2 in response to the second transmit start signal EFLM2.

[0106] As described above, according to one or more embodiments of the present invention, the transmitter driver controller 210 can adjust the usage (e.g., usage time) of the first transmitter driver 610, thereby dispersing the degradation stress of the first transmitter driver 610 and reducing or minimizing the degradation stress of the first switching elements T1 to the twelfth switching elements T12 in the first transmitter driver 610. As a result, the transmitter driver controller 210 can improve or maximize the lifespan of the first transmitter driver 610.

[0107] Figure 11 An embodiment is shown when the first and second transmit drivers are operating. In detail, Figure 11 This is a timing diagram illustrating an embodiment of the signals when both the first transmitter driver 610 and the second transmitter driver 620 are operating.

[0108] refer to Figure 8 and Figure 11 The timing controller 200 can provide a first transmit start signal EFLM1 to the first transmit driver 610 and a second transmit start signal EFLM2 to the second transmit driver 620. For example, when both the first degradation stress and the second degradation stress are greater than the reference degradation stress, the driver selector 213 (in Figure 5The timing controller 200 can generate signals to control the operation of both the first transmit driver 610 and the second transmit driver 620. In this case, the timing controller 200 can provide a first transmit start signal EFLM1 for driving the first transmit driver 610 and a second transmit start signal EFLM2 for driving the second transmit driver 620. For example, the first stages ST11 to ST1(n-1) and ST1n to ST1N can output a first transmit signal EM11 synchronized with the first clock signal ECLK1 and the second clock signal ECLK2 in response to the first transmit start signal EFLM1. The second stages ST21 to ST2(n-1) and ST2n to ST2N can output a second transmit signal EM21 synchronized with the first clock signal ECLK1 and the second clock signal ECLK2 in response to the second transmit start signal EFLM2.

[0109] As described above, when both the first degradation stress and the second degradation stress are greater than the reference degradation stress, the transmit driver controller 210 can operate both the first transmit driver 610 and the second transmit driver 620, thereby causing the transmit signal to be stably (or in other predetermined manner) output to the transmit line EL.

[0110] Figure 12 An embodiment of the electronic device is shown; and, Figure 13 An embodiment of the electronic device is shown. In detail, Figure 12 This is a block diagram illustrating an embodiment of an electronic device 1000 conceived according to the present invention, and Figure 13 It shows Figure 12 An illustration of an example of an electronic device 1000 implemented as a smartphone.

[0111] refer to Figure 12 and Figure 13 The electronic device 1000 may include a processor 1010, a memory device 1020, a storage device 1030, an input / output (I / O) device 1040, a power supply 1050, and a display device 1060. Here, the display device 1060 may be... Figure 1 Display device 10.

[0112] Additionally, the electronic device 1000 may further include multiple ports for communicating with video cards, sound cards, memory cards, universal serial bus (USB) devices, and other electronic devices. In embodiments, such as... Figure 13As shown, electronic device 1000 can be implemented as a smartphone. However, in another embodiment, electronic device 1000 can be implemented as various devices. Examples include cellular phones, video phones, smart tablets, smartwatches, tablet PCs, car navigation systems, computer monitors, laptops, and head-mounted display (HMD) devices, etc.

[0113] Processor 1010 can perform various computing functions. Processor 1010 can be a microprocessor, central processing unit (CPU), application processor (AP), etc. Processor 1010 can be coupled to other components via address bus, control bus, and data bus, etc. In addition, processor 1010 can be coupled to an expansion bus such as the peripheral component interconnect (PCI) bus. Memory device 1020 can store data used for the operation of electronic device 1000. For example, memory device 1020 may include at least one non-volatile memory device such as erasable programmable read-only memory (EPROM) device, electrically erasable programmable read-only memory (EEPROM) device, flash memory device, phase-change random access memory (PRAM) device, resistive random access memory (RRAM) device, nanofloating gate memory (NFGM) device, polymer random access memory (PoRAM) device, magnetic random access memory (MRAM) device, and ferroelectric random access memory (FRAM) device, and / or at least one volatile memory device such as dynamic random access memory (DRAM) device, static random access memory (SRAM) device, and mobile DRAM device.

[0114] Storage device 1030 may include solid-state drive (SSD) devices, hard disk drive (HDD) devices, and CD-ROM devices, etc. I / O device 1040 may include input devices (e.g., keyboard, keypad, mouse, touchpad, and touchscreen) and output devices (e.g., printer and speaker). In some embodiments, I / O device 1040 may include display device 1060. Power supply 1050 provides power for the operation of electronic device 1000.

[0115] Display device 1060 can display images corresponding to visual information of electronic device 1000. Display device 1060 can enable multiple transmitter drivers to operate alternately (or distributedly or in other predetermined manner) to improve or maximize the lifespan of the transmitter drivers.

[0116] In one embodiment, the display device 1060 may include: a display panel including a plurality of pixels; a first transmitter driver configured to apply a transmitter signal to the display panel and configured to be disposed on a first side; a second transmitter driver configured to apply a transmitter signal to the display panel and configured to be disposed on a second side opposite to the first side; and a transmitter driver controller configured to selectively drive the first transmitter driver and the second transmitter driver based on the degradation stress of the first transmitter driver and the second transmitter driver. The transmitter driver controller may adjust the usage amount (e.g., usage time) of the first transmitter driver and / or the second transmitter driver. The transmitter driver controller may reduce or minimize the degradation stress of the first to twelfth switching elements in the first and second transmitter drivers.

[0117] As a result, the transmit driver controller can improve or maximize the lifespan of the first transmit driver and / or the second transmit driver by the distribution of one or both of the first and second degradation stresses.

[0118] According to one embodiment, a non-transitory computer-readable medium stores instructions that, when executed by one or more processors, cause one or more processors to perform the operations of the embodiments described herein. For example, in one embodiment, one or more processors may execute instructions to determine the stress of a first emitter driver (e.g., 610) of a display panel, determine the stress of a second emitter driver (e.g., 620) of the display panel, and control the operation of at least one of the first and second emitter drivers based on the stress of each of the first and second emitter drivers.

[0119] Computer-readable media may be included in, for example, transmit driver controller 210 or timing controller 200, or coupled to, for example, transmit driver controller 210 or timing controller 200. In one embodiment, the computer-readable medium may correspond to memory device 1020 and may be, for example, any type of volatile or non-volatile memory. One or more processors may correspond to, for example, timing controller 200, transmit driver controller 210, or processor 1010.

[0120] In operation, when the stress of the first transmit driver is greater than that of the second transmit driver, one or more processors can execute instructions to control the activation of the second transmit driver to reduce the stress difference between the first and second transmit drivers. In this way, the deteriorating stress can be distributed more evenly between the first and second transmit drivers, or alternatively distributed in a manner that achieves a predetermined distribution between the first and second transmit drivers.

[0121] The methods, processes, and / or operations described herein can be implemented by code or instructions executed by a computer, processor, controller, or other signal processing device. The computer, processor, controller, or other signal processing device can be any of those described herein or any other element besides those described herein. Because the algorithms underlying the methods (or the operations of the computer, processor, controller, or other signal processing device) are described in detail, the code or instructions used to implement the operations of the method embodiments can transform the computer, processor, controller, or other signal processing device into a dedicated processor for performing the methods herein.

[0122] Alternatively, another embodiment may include a computer-readable medium (e.g., a non-transitory computer-readable medium) for storing the aforementioned code or instructions. The computer-readable medium may be a volatile or non-volatile memory or other storage device that can be removably or permanently coupled to a computer, processor, controller, or other signal processing apparatus that will execute code or instructions for implementing the operations of the method or apparatus embodiments herein.

[0123] The controllers, processors, devices, modules, units, multiplexers, calculators, converters, selectors, generators, logic, interfaces, decoders, drivers, and other signal generation and signal processing features disclosed herein may be implemented in, for example, non-transitory logic that may include hardware, software, or both. When implemented at least partially in hardware, the controllers, processors, calculators, converters, selectors, devices, modules, units, multiplexers, generators, logic, interfaces, decoders, drivers, and other signal generation and signal processing features may be, for example, any of a variety of integrated circuits, including but not limited to application-specific integrated circuits, field-programmable gate arrays, combinations of logic gates, systems-on-a-chip, microprocessors, or other types of processing or control circuitry.

[0124] When implemented at least partially in software, controllers, processors, devices, modules, units, multiplexers, generators, logic, interfaces, decoders, drivers, calculators, converters, selectors, and other signal generation and signal processing features may include, for example, memory or other storage devices for storing code or instructions, for example, to be executed by a computer, processor, microprocessor, controller, or other signal processing device. The computer, processor, microprocessor, controller, or other signal processing device may be any of those described herein or any other element besides those described herein. Because the algorithms that form the basis of the method (or the operation of the computer, processor, microprocessor, controller, or other signal processing device) are described in detail, the code or instructions for implementing the operations of the method embodiments can transform the computer, processor, controller, or other signal processing device into a dedicated processor for implementing the methods described herein.

[0125] The foregoing is illustrative of the inventive concept and should not be construed as limiting it. Although several embodiments of the inventive concept have been described, those skilled in the art will readily understand that many modifications can be made to the embodiments without substantially departing from the novel teachings of the inventive concept. Therefore, these modifications are intended to be included within the scope of the inventive concept as defined in the claims. Embodiments can be combined to form additional embodiments.

[0126] The use of the "device plus function" phrase in the claims is not intentional, but if interpreted as such, it means that it covers not only the structure described herein as performing the function, but also equivalent structures. Therefore, it should be understood that the foregoing is illustrative of the inventive concept and should not be construed as limiting oneself to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of the claims. The inventive concept is defined by the scope of the claims, wherein equivalents of the scope of the claims are included.

Claims

1. A display apparatus, wherein the display apparatus comprises: a display panel including a plurality of pixels; a first emission driver configured to apply an emission signal to the display panel and disposed on a first side of the display panel; a second emission driver configured to apply an emission signal to the display panel and disposed on a second side of the display panel different from the first side; and an emission driver controller configured to selectively drive the first and second emission drivers according to a deterioration stress of the first and second emission drivers, wherein the emission driver controller is further configured to receive luminance data and convert the luminance data into active matrix organic light emitting diode (AMOLED) off-ratio data corresponding to the luminance data, and calculate the deterioration stress of the first and second emission drivers based on the AMOLED off-ratio data. 2.The display apparatus of claim 1, wherein the emission driver controller comprises: a data converter configured to convert the luminance data into AMOLED off-ratio data corresponding to the luminance data; a stress calculator configured to calculate the deterioration stress based on the AMOLED off-ratio data; and a driver selector configured to control operations of the first and second emission drivers according to the deterioration stress. 3.The display apparatus of claim 2, wherein the driver selector is configured to control the operations of the first and second emission drivers by comparing a first deterioration stress representing the deterioration stress of the first emission driver with a second deterioration stress representing the deterioration stress of the second emission driver. 4.The display apparatus of claim 3, wherein the data converter is configured to: divide the luminance data into wavebands, and convert the luminance data into the AMOLED off-ratio data corresponding to the wavebands. 5.The display apparatus of claim 4, wherein the data converter is configured to store a look-up table including information indicating the wavebands with respect to the AMOLED off-ratio data. 6.The display apparatus of claim 4, wherein the stress calculator is configured to calculate the deterioration stress by accumulating the AMOLED off-ratio data according to driving times of the first and second emission drivers. 7.The display apparatus of claim 6, wherein: when the first deterioration stress is less than the second deterioration stress, the driver selector is configured to control the first emission driver to operate and the second emission driver not to operate. ​ ​ 8.The display apparatus of claim 6, wherein: when the first degradation stress is greater than the second degradation stress, the driver selector is configured to control the first emission driver to not operate and the second emission driver to operate. 9.The display apparatus of claim 6, wherein: when both the first degradation stress and the second degradation stress are greater than a reference degradation stress, the driver selector is configured to control both the first emission driver and the second emission driver to operate. 10.The display apparatus of claim 2, wherein the emission driver controller is configured to cause the active matrix organic light emitting diode to accumulate off ratio data to store usage data and degradation data of switching elements in the first emission driver and the second emission driver. 11.A method of operating a display apparatus, wherein the method comprises: calculating degradation stresses of a first emission driver and a second emission driver; and controlling the first emission driver and the second emission driver to selectively operate according to the degradation stresses, wherein the method further comprises: receiving luminance data and converting the luminance data to active matrix organic light emitting diode off ratio data corresponding to the luminance data, and calculating the degradation stresses of the first emission driver and the second emission driver based on the active matrix organic light emitting diode off ratio data. 12.The method of claim 11, wherein controlling the first emission driver and the second emission driver comprises: controlling operations of the first emission driver and the second emission driver by comparing a first degradation stress representing the degradation stress of the first emission driver with a second degradation stress representing the degradation stress of the second emission driver. 13.The method of claim 12, wherein calculating the degradation stresses comprises: dividing the luminance data into wavebands; and converting the luminance data to the active matrix organic light emitting diode off ratio data corresponding to the wavebands. 14.The method of claim 13, wherein calculating the degradation stresses comprises storing a lookup table including information indicating the wavebands with respect to the active matrix organic light emitting diode off ratio data. 15.The method of claim 13, wherein calculating the degradation stresses comprises calculating the degradation stresses by accumulating the active matrix organic light emitting diode off ratio data according to driving times of the first emission driver and the second emission driver.

16. The method of claim 15, wherein controlling the first emission driver and the second emission driver comprises: controlling the first emission driver to operate and the second emission driver to not operate when the first degradation stress is less than the second degradation stress.

17. The method of claim 15, wherein controlling the first emission driver and the second emission driver comprises: controlling the first emission driver to not operate and the second emission driver to operate when the first degradation stress is greater than the second degradation stress.

18. The method of claim 15, wherein controlling the first emission driver and the second emission driver comprises: controlling both the first emission driver and the second emission driver to operate when both the first degradation stress and the second degradation stress are greater than a reference degradation stress. 19.The method of claim 11, wherein the method further comprises: storing usage data and degradation data of switching elements in the first emission driver and the second emission driver by turning off the active matrix organic light emitting diode than data accumulation. 20.A non-transitory computer readable medium configured to store instructions that, when executed by one or more processors, cause the one or more processors to: determine a stress of a first emission driver of a display panel; determine a stress of a second emission driver of the display panel; control operation of at least one of the first emission driver and the second emission driver according to the stress of each of the first emission driver and the second emission driver, receive luminance data and convert the luminance data to active matrix organic light emitting diode turn-off ratio data corresponding to the luminance data; and calculate the stress of each of the first emission driver and the second emission driver based on the active matrix organic light emitting diode turn-off ratio data, wherein, when the stress of the first emission driver is greater than the stress of the second emission driver, the one or more processors are configured to execute the instructions to control activation of the second emission driver to reduce a difference between the stress of the first emission driver and the second emission driver. ​

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