TWI759255B - Organic light-emitting diode display device and operating method thereof - Google Patents

Abstract

An OLED display device and an operating method thereof are disclosed. The OLED display device includes an OLED panel, a volatile memory and a non-volatile memory. The volatile memory is coupled to the OLED panel and receives a cumulative current data from the OLED panel. The non-volatile memory is coupled to the volatile memory and backs up the cumulative current data for the volatile memory to access the cumulative current data. The cumulative current data is divided into a first part and a second part according to at least one threshold. The non-volatile memory includes a primary recording unit and a secondary recording unit. The primary recording unit records the first part in a non-erasing way and the secondary recording unit records the second part in an erasable way.

Description

Organic light emitting diode display device and operation method thereof

The present invention relates to display devices, and more particularly, to an organic light emitting diode (OLED) display device and an operation method thereof.

When the organic light-emitting diode display screen is lit for a period of time, the brightness of red (R), green (G) or blue (B) will be attenuated (aging) to a certain extent. To eliminate this decay (aging), compensation mechanisms such as De-burning are often employed.

For example, the compensation mechanism can realize the compensation by detecting the attenuation curve of the sample, and then correcting the output gray scale according to the attenuation curve. However, as shown in Figures 1 and 2, in the process of comparing the decay curve, the volatile memory (such as random access memory (RAM)) needs to keep the current The state (such as brightness, temperature, current, etc.) is written into non-volatile memory (such as flash memory (Flash)), which makes the action of flashing memory very frequent and error-prone, especially In the case of abnormal power failure, it is even more serious, and even causes the flash memory to start recording from scratch, which needs to be improved urgently.

Therefore, the present invention provides an organic light emitting diode display device and an operation method thereof, so as to effectively solve the above-mentioned problems encountered in the prior art.

A preferred embodiment according to the present invention is an organic light emitting diode display device. In this embodiment, the organic light emitting diode display device includes an organic light emitting diode panel, a volatile memory and a non-volatile memory. The volatile memory is coupled to the OLED panel and receives accumulated current data from the OLED panel. The non-volatile memory is coupled to the volatile memory and backs up the accumulated current data for the volatile memory to access the accumulated current data. The accumulated current data is divided into a first part and a second part according to at least one threshold. The non-volatile memory includes a primary recording unit and a secondary recording unit. The primary recording unit records the first portion in an erasable manner and the secondary recording unit records the second portion in an erasable manner.

In one embodiment, the accumulated current data is divided into a first part and a second part according to an accumulated current look-up table including the at least one threshold value, and when the second part recorded by the secondary recording unit reaches the at least one threshold value, Triggers the primary record unit to update the first part of its record.

In one embodiment, when an abnormality occurs in the secondary recording unit, only the first part recorded in the primary recording unit is retained, and the second part recorded in the secondary recording unit is cleared.

In one embodiment, if the smallest recording unit of the volatile memory has n bits, the smallest recording units of the primary recording unit and the secondary recording unit have k bits and (n-k) bits, respectively.

In one embodiment, the main recording unit can generate k main recording points by accumulating bit by bit without erasing each time the first part is recorded.

In one embodiment, the secondary recording unit can generate (2 ^nk ) secondary recording points by normal accumulation in an erasable manner each time the second part is recorded.

In one embodiment, the primary recording unit and the secondary recording unit can generate (2 ^nk )*k recording points in total.

In one embodiment, when the non-volatile memory is abnormally written, the recording can be continued after returning to the closest main recording point.

In one embodiment, the organic light emitting diode display device further includes a backup unit, coupled between the volatile memory and the non-volatile memory, for backing up the accumulated current data from the volatile memory to the non-volatile memory. memory, and accessing accumulated current data from the non-volatile memory to the volatile memory.

In one embodiment, the organic light emitting diode display device further includes a compensation unit coupled between the volatile memory and the organic light emitting diode panel, when the volatile memory is accessed from the non-volatile memory to the accumulation In the case of current data, the compensation unit calculates a compensation value according to the accumulated current data and compensates the organic light emitting diode panel according to the compensation value.

Another preferred embodiment according to the present invention is an operation method of an organic light emitting diode display device. In this embodiment, the organic light emitting diode display device includes an organic light emitting diode panel, a volatile memory and a non-volatile memory. The method includes the following steps: the volatile memory receives accumulated current data from the organic light emitting diode panel; the non-volatile memory backs up the accumulated current data for the volatile memory to access the accumulated current data, wherein the accumulated current data is based on At least one threshold is divided into a first part and a second part. The non-volatile memory includes a primary recording unit and a secondary recording unit; and the primary recording unit records the first portion in a non-erasable manner and the secondary recording unit records the second portion in an erasable manner.

In one embodiment, the method divides the accumulated current data into a first part and a second part according to the accumulated current look-up table including the at least one threshold value, and when the second part recorded by the secondary recording unit reaches the at least one threshold value , the method triggers the primary record unit to update the first part of its record.

In one embodiment, when the secondary recording unit is abnormal, the method only retains the first part of the primary recording unit record, and clears the second part of the secondary recording unit record.

In one embodiment, if the smallest recording unit of the volatile memory has n bits, the smallest recording units of the primary recording unit and the secondary recording unit have k bits and (n-k) bits, respectively.

In one embodiment, the main recording unit can generate k main recording points by accumulating bit by bit without erasing each time the first part is recorded.

In one embodiment, the secondary recording unit can generate (2 ^nk ) secondary recording points by normal accumulation in an erasable manner each time the second part is recorded.

In one embodiment, the primary recording unit and the secondary recording unit can generate (2 ^nk )*k recording points in total.

In one embodiment, when the non-volatile memory is abnormally written, the method can return to the closest main recording point and continue recording.

In one embodiment, the method further includes: backing up the accumulated current data from the volatile memory to the non-volatile memory; and accessing the accumulated current data from the non-volatile memory to the volatile memory.

In one embodiment, the method further includes: when the volatile memory accesses the accumulated current data from the non-volatile memory, calculating a compensation value according to the accumulated current data, and performing the operation on the organic light emitting diode panel according to the compensation value. compensate.

Compared with the prior art, the organic light emitting diode display device and the operation method thereof proposed by the present invention divide the non-volatile memory into a main recording unit that records the first part of the accumulated current data in a non-erasable manner and an erasable memory unit. The secondary recording unit that records the second part of the accumulated current data in the exclusion mode will trigger the primary recording unit to update the first recorded part only when the second part recorded by the secondary recording unit reaches the threshold. Once the non-volatile memory has a phenomenon such as abnormal writing, it can immediately return to the closest main recording point and continue recording without starting recording from the beginning, so it can realize the de-branding of the organic light emitting diode display device (De -burning) compensation function and can effectively improve the shortcomings of the previous technology.

A preferred embodiment according to the present invention is an organic light emitting diode display device. In this embodiment, the organic light emitting diode display device has de-burning compensation according to the accumulated current data and can return to the closest main recording point when the non-volatile memory is abnormally written to continue. documented functions, but not limited thereto.

Please refer to FIG. 3 , which is a schematic diagram of the organic light emitting diode display device in this embodiment. As shown in FIG. 3 , the organic light emitting diode display device 3 may include an organic light emitting diode panel 30 , a volatile memory 31 , a non-volatile memory 32 , an update unit 33 , a backup unit 34 and a compensation unit 35 . The refresh unit 33 is coupled between the organic light emitting diode panel 30 and the volatile memory 31 . The backup unit 34 is coupled between the volatile memory 31 and the non-volatile memory 32 . The compensation unit 35 is coupled between the organic light emitting diode panel 30 and the volatile memory 31 .

In practical applications, the volatile memory (Volatile memory) 31 refers to a memory whose stored data will disappear when the power supply is interrupted, such as Static Random Access Memory (SRAM) or Random access memory (Random Access Memory, RAM) such as dynamic random access memory (Dynamic Random Access Memory, DRAM), but not limited thereto. Non-volatile memory (Non-Volatile Memory) 32 means that when the power supply is interrupted, the data stored in it will not disappear, and the data stored in it can be read after the power supply is restarted, such as flash memory (Flash memory). memory) or read-only memory (Read-only memory, ROM), etc., but not limited to this.

The volatile memory 31 receives the accumulated current data from the OLED panel 30 through the update unit 33 and backs up the accumulated current data to the non-volatile memory 32 through the backup unit 34 . The non-volatile memory 32 is used for backing up the accumulated current data for the volatile memory 31 to access the accumulated current data through the backup unit 34 . When the volatile memory 31 accesses the accumulated current data from the non-volatile memory 32, the compensation unit 35 calculates a compensation value according to the accumulated current data and de-brands the organic light emitting diode panel 30 according to the compensation value (De- burning) compensation.

It should be noted that, as shown in FIG. 4 , the non-volatile memory 32 may include a primary recording unit 32A and a secondary recording unit 32B. If the accumulated current data from the organic light emitting diode panel 30 stored in the volatile memory 31 includes a plurality of data blocks B, the volatile memory 31 can be adjusted according to at least one threshold (ie, the threshold of the accumulated current value). ) After dividing the data block B into the first part B1 and the second part B2, the first part B1 and the second part B2 are backed up to the primary recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32, respectively. The primary recording unit 32A records the first part B1 by bit-by-bit accumulation in a non-erasable manner, and the secondary recording unit 32B records the second part B2 by normal accumulation in an erasable manner.

For example, as shown in FIG. 5 , the main recording unit 32A of the non-volatile memory 32 records the first part B1 in a non-erasing manner (ie, non-erasing coding), such as from 111 . . . 111 111......

In practical applications, the volatile memory 31 can divide the accumulated current data stored in the volatile memory 31 into the first part B1 and After the second part B2, the first part B1 and the second part B2 are backed up to the primary recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32, respectively. When the second part B2 recorded by the secondary recording unit 32B of the non-volatile memory 32 reaches the threshold of any accumulated current value, the primary recording unit 32A of the non-volatile memory 32 will be triggered to update the first part recorded. B1 (eg from 111...111 to 111...110, but not limited thereto).

When the secondary recording unit 32B of the non-volatile memory 32 suffers from a phenomenon such as a flashing abnormality, the non-volatile memory 32 only retains the first part B1 recorded by the primary recording unit 32A in a non-erasing manner, and stores the secondary recording unit 32A in an unerased manner. The second portion B2 recorded by the recording unit 32B in an erasable manner is cleared.

Please refer to FIG. 6 . FIG. 6 illustrates an embodiment of a look-up table of codes corresponding to accumulated current values (threshold values). As shown in FIG. 6 , it is assumed that the accumulated current values (threshold values) of codes 0 to 7 corresponding to the main recording unit 32A of the non-volatile memory 32 are 0, 10000, 20000, 30000, 40000, 50000, 60000, and 70000, respectively. , the accumulated current value stored in the volatile memory 31 can be divided into a first part B1 and a second part B2 according to the accumulated current look-up table and then backed up to the primary recording unit 32A and the secondary recording unit of the non-volatile memory 32 respectively 32B. When the second part B2 recorded by the secondary recording unit 32B reaches at least one threshold, the primary recording unit 32A will be triggered to update the first part B1 recorded.

For example, when the accumulated current value is 12500, since the accumulated current value of 12500 is between the threshold value of 10000 and the threshold value of 20000, and the threshold value of 10000 corresponds to code 1 and the accumulated current value of 12500 exceeds the threshold value of 10000 is 2500, therefore, the accumulated current value 12500 can be divided into the first part B1=1 and the second part B2=2500, that is, the first part B1 recorded by the main recording unit 32A is 1 and the second part B1 recorded by the secondary recording unit 32B is 1 Part B2 is 2500. Then, when the accumulated current value continues to accumulate to 20050, since 20050 is between the threshold value 20000 and the threshold value 30000, and the threshold value 20000 corresponds to code 2 and the accumulated current value 20050 exceeds the threshold value 20000, the excess current value is 50, Therefore, the accumulated current value 20050 can be divided into the first part B1=2 and the second part B2=50, that is, the primary recording unit 32A will update the first part B1 recorded by the primary recording unit 32A from the original 1 to 2 and the secondary recording unit 32B will The second part of the record, B2, is 50. The rest can be deduced by analogy, and will not be repeated here.

Referring to FIG. 7 , in an embodiment, if the volatile memory 31 stores a 32-bit data block B, it can be divided into, for example, a 16-bit first part B1 and a 16-bit second part B1 Part B2 is then backed up to the primary recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32 respectively, but not limited thereto.

Referring to FIG. 8 , in another embodiment, assuming that the volatile memory 31 stores an n-bit data block B, it can be divided into a first part B1 of k-bits and (n-k) bits, for example The second part B2 is backed up to the primary recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32, respectively. Among them, both n and k are positive integers and n is greater than k.

It should be noted that the main recording unit 32A of the non-volatile memory 32 can generate k main recording points by accumulating bit by bit in a non-erasing manner every time the first part B1 of k bits is recorded. The secondary recording unit 32B of the non-volatile memory 32 can generate (2 ^nk ) secondary recording points by normal accumulation in an erasable manner each time the second portion B2 of (nk) bits is recorded. Therefore, the primary recording unit 32A and the secondary recording unit 32A of the non-volatile memory 32 should be able to generate (2 ^nk )*k recording points in total, but not limited to this.

For example, as shown in FIG. 9 , in the process of accumulating current recording, the non-volatile memory 32 in FIG. 8 can form k main recording points through the main recording unit 32A recorded in a non-erasing manner and can pass through the The secondary recording unit 32B recorded in the erasing manner forms (2 ^nk −1) secondary recording points between two adjacent primary recording points, but is not limited thereto. As for FIG. 10 , an embodiment of different time accumulation thresholds and their corresponding recovery point values is shown, but it is not limited thereto.

Another preferred embodiment according to the present invention is an operation method of an organic light emitting diode display device. In this embodiment, the organic light emitting diode display device includes an organic light emitting diode panel, a volatile memory and a non-volatile memory. The volatile memory system is coupled between the organic light emitting diode panel and the non-volatile memory. The non-volatile memory includes a primary recording unit and a secondary recording unit.

The operation method of the organic light emitting diode display device may include the following steps: the volatile memory receives the accumulated current data from the organic light emitting diode panel; the non-volatile memory backs up the accumulated current data for the volatile memory to access the accumulated current data, wherein the accumulated current data is divided into a first part and a second part according to at least one threshold; and the primary recording unit of the non-volatile memory records the first part in a non-erasing manner and the secondary recording of the non-volatile memory The cell system records the second part in an erasable manner.

In one embodiment, the method may further include: backing up the accumulated current data from the volatile memory to the non-volatile memory; accessing the accumulated current data from the non-volatile memory to the volatile memory; and when volatile When the volatile memory accesses the accumulated current data from the non-volatile memory, a compensation value is calculated according to the accumulated current data, and the organic light emitting diode panel is compensated according to the compensation value, but not limited thereto.

In practical applications, the method can divide the accumulated current data into a first part and a second part according to the accumulated current look-up table including at least one threshold value, and when the second part recorded by the secondary recording unit reaches at least one threshold value, the The method triggers the main record unit to update the first part of its record. When an exception occurs in the secondary recording unit, the method will only keep the first part of the primary recording unit record, and clear the second part of the secondary recording unit record, but not limited to this.

Please refer to FIG. 11 . FIG. 11 is a flowchart illustrating an operation method of an organic light emitting diode display device according to another embodiment of the present invention. As shown in FIG. 11 , the operation method of the organic light emitting diode display device includes the following steps:

Step S10: Receive/decode data (ie, accumulated current data);

Step S11: Determine whether the data is abnormal?

If the judgment result of step S11 is yes, then execute step S14: update the first part of the primary recording unit record and clear the second part of the secondary recording unit record;

If the judgment result of step S11 is no, then execute step S12: perform data refresh according to the DBN operation result of step S13;

After step S12, step S15 is executed: according to the reference lookup table in step S16, it is judged whether it is the main record point?

If the judgment result of step S15 is yes, then execute step S17: update the first part of the main recording unit record;

If the judgment result of step S15 is no, then execute step S18: update the second part of the secondary record unit record; and

After steps S17 and S18, step S19: encoding/outputting data is performed.

In one embodiment, if the smallest recording unit of the volatile memory has n bits, the smallest recording units of the primary recording unit and the secondary recording unit have k bits and (nk) bits, respectively. Among them, the main recording unit adopts the non-erasing method to accumulate bit by bit each time the first part is recorded, and can generate k main recording points; the secondary recording unit adopts the erasable method to normally accumulate each time the second part is recorded. (2 ^nk ) secondary record points can be generated. Therefore, the primary recording unit and the secondary recording unit can generate (2 ^nk )*k recording points in total.

When the non-volatile memory has a phenomenon such as abnormal flashing, the method can return to the closest main recording point and continue recording. For example, as shown in FIG. 12, when the non-volatile memory has a flashing abnormality during the accumulation current recording process, since the abnormality occurs between the main recording points MP2 and MP3, the method can return to the most After approaching the main recording point MP2, continue recording without starting recording from the beginning, but not limited to this.

Compared with the prior art, the organic light emitting diode display device and the operation method thereof proposed by the present invention divide the non-volatile memory into a main recording unit that records the first part of the accumulated current data in a non-erasable manner and an erasable memory unit. The secondary recording unit that records the second part of the accumulated current data in the exclusion mode will trigger the primary recording unit to update the first recorded part only when the second part recorded by the secondary recording unit reaches the threshold. Once the non-volatile memory has a phenomenon such as abnormal writing, it can immediately return to the closest main recording point and continue recording without starting recording from the beginning, so it can realize the de-branding of the organic light emitting diode display device (De -burning) compensation function and can effectively improve the shortcomings of the previous technology.

R1: Storage area R2: Storage area S1: Sector S2: Sector a: Step b: Step c: Step d: Step 3: OLED display device 30: OLED panel 31: Volatile memory Bank 32: Non-volatile memory 32A: Primary recording unit 32B: Secondary recording unit 33: Update unit 34: Backup unit 35: Compensation unit B: Data block B1: First part B2: Second part MP1~MPK: Primary Record points SP1~SP (2 ^nk -1): Secondary record points LUT_1~LUT_K: Recovery points S10~S19: Steps

FIG. 1 is a schematic diagram illustrating the need to frequently rewrite the flash memory (Flash) when performing de-burning compensation in the prior art.

FIG. 2A and FIG. 2B are schematic diagrams showing the flow of normal and abnormal flash memory flashing, respectively.

FIG. 3 is a schematic diagram of an organic light emitting diode display device 3 according to an embodiment of the present invention.

4 is a schematic diagram of the primary recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32 after the data block B stored in the volatile memory 31 is divided into a first part B1 and a second part B2 and backed up to the non-volatile memory 32 respectively.

FIG. 5 is a schematic diagram illustrating that the main recording unit 32A of the non-volatile memory 32 adopts non-erasure coding.

FIG. 6 shows an embodiment of a look-up table of codes corresponding to accumulated current values.

FIG. 7 shows the main data block B of the 32-bit data stored in the volatile memory 31 divided into the first part B1 of 16 bits and the second part B2 of 16 bits, respectively backed up to the non-volatile memory 32 . A schematic diagram of the recording unit 32A and the secondary recording unit 32B.

FIG. 8 shows that the n-bit data block B stored in the volatile memory 31 is divided into a first part B1 of k bits and a second part B2 of (n-k) bits and then backed up to the non-volatile memory 32 respectively. A schematic diagram of the primary recording unit 32A and the secondary recording unit 32B.

FIG. 9 shows that the non-volatile memory 32 in FIG. 8 forms k primary recording points in the process of accumulating current recording through the primary recording unit 32A for recording without erasing and the secondary recording unit 32B for recording with erasing and a schematic diagram of (2 ^nk -1) secondary recording points between two adjacent primary recording points.

FIG. 10 illustrates one embodiment of the time accumulation threshold and the corresponding recovery point value.

FIG. 11 is a flowchart illustrating an operation method of an organic light emitting diode display device according to another embodiment of the present invention.

FIG. 12 is a schematic diagram illustrating that the non-volatile memory can return to the closest main recording point MP2 and continue recording when an abnormality occurs during the accumulated current recording process.

31: Volatile memory

32: Non-volatile memory

32A: Main recording unit

32B: Secondary Recording Unit

B: data block

B1: Part 1

B2: Part II

Claims (20)

An organic light emitting diode display device, comprising: an organic light-emitting diode panel; a volatile memory coupled to the OLED panel, the volatile memory receiving an accumulated current data from the OLED panel; and a non-volatile memory coupled to the volatile memory, the non-volatile memory backing up the accumulated current data for the volatile memory to access the accumulated current data; Wherein, the accumulated current data is divided into a first part and a second part according to at least a threshold value, the non-volatile memory includes a main recording unit and a secondary recording unit, and the main recording unit is recorded in a non-erasing manner The first portion and the secondary recording unit record the second portion in an erasable manner. The organic light emitting diode display device of claim 1, wherein the accumulated current data is divided into the first part and the second part according to an accumulated current look-up table including the at least one threshold value, when the secondary record When the second part of the unit record reaches the at least one threshold, the main recording unit is triggered to update the first part of its record. The organic light emitting diode display device according to claim 1, wherein when the secondary recording unit is abnormal, only the first part recorded by the primary recording unit is retained, and the first part recorded by the secondary recording unit is stored. The second part is cleared. The organic light emitting diode display device of claim 1, wherein if the minimum recording unit of the volatile memory has n bits, the minimum recording units of the primary recording unit and the secondary recording unit have k bits respectively and (n-k) bits. The organic light emitting diode display device according to claim 4, wherein the main recording unit can generate k main recording points by accumulating bit by bit without erasing each time the first part is recorded. The organic light emitting diode display device according to claim 4, wherein the secondary recording unit can generate (2 ^nk ) secondary recording points by normal accumulation in an erasable manner each time the second part is recorded. The organic light emitting diode display device according to claim 5 and claim 6, wherein the primary recording unit and the secondary recording unit can generate (2 ^nk )*k recording points in total. The organic light emitting diode display device according to claim 5, wherein when the non-volatile memory is abnormally written, it can return to a closest main recording point and continue recording. The organic light emitting diode display device according to claim 1, further comprising: a backup unit, coupled between the volatile memory and the non-volatile memory, for backing up the accumulated current data from the volatile memory to the non-volatile memory, and for transferring the accumulated current data from the non-volatile memory to the non-volatile memory The accumulated current data is accessed to the volatile memory. The organic light emitting diode display device according to claim 1, further comprising: a compensation unit coupled between the volatile memory and the organic light emitting diode panel, when the volatile memory accesses the accumulated current data from the non-volatile memory, the compensation unit according to the accumulated current data A compensation value is calculated from the current data and the organic light emitting diode panel is compensated according to the compensation value. A method of operating an organic light emitting diode display device comprising an organic light emitting diode panel, a volatile memory and a non-volatile memory, the method comprising the following steps: the volatile memory receives accumulated current data from one of the organic light emitting diode panels; The non-volatile memory backs up the accumulated current data for the volatile memory to access the accumulated current data, wherein the accumulated current data is divided into a first part and a second part according to at least a threshold, the non-volatile memory The body includes a primary recording unit and a secondary recording unit; and The primary recording unit records the first portion in an erasable manner and the secondary recording unit records the second portion in an erasable manner. The method of claim 11, wherein the method divides the accumulated current data into the first part and the second part according to an accumulated current look-up table including the at least one threshold value, when the secondary recording unit records the When the second portion reaches the at least one threshold, the method triggers the primary recording unit to update the first portion of its record. The method of claim 11, wherein when the secondary recording unit is abnormal, the method only retains the first part recorded by the primary recording unit, and clears the second part recorded by the secondary recording unit . The method of claim 11, wherein if a minimum recording unit of the volatile memory has n bits, then the minimum recording units of the primary recording unit and the secondary recording unit have k bits and (n-k) bits, respectively Yuan. The method of claim 14, wherein the main recording unit can generate k main recording points by accumulating bit by bit without erasing each time the first part is recorded. The method of claim 14, wherein the secondary recording unit can generate (2 ^nk ) secondary recording points by normal accumulation in an erasable manner each time the second part is recorded. The method of claim 15 and claim 16, wherein the primary recording unit and the secondary recording unit can generate (2 ^nk )*k recording points in total. The method of claim 15, wherein when the non-volatile memory is abnormally written, the method can return to a closest main recording point and continue recording. The method of claim 11, further comprising: Back up the accumulated current data from the volatile memory to the non-volatile memory; and The accumulated current data is accessed from the non-volatile memory to the volatile memory. The method of claim 11, further comprising: When the volatile memory accesses the accumulated current data from the non-volatile memory, a compensation value is calculated according to the accumulated current data and the OLED panel is compensated according to the compensation value.

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