Organic light emitting diode display device and operating method thereof

Abstract

An organic light emitting diode display device and an operating method thereof are disclosed. 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 organic light emitting diode panel and receives accumulated current data from the organic light emitting diode 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 value. 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 manner and the secondary recording unit records the second part in an erasable manner.

Description

TECHNICAL FIELD

[0001] The present application relates to a display device, and in particular, to an organic light emitting diode (OLED) display device and an operating method thereof. BACKGROUND

[0002] When an organic light emitting diode display screen is turned on for a period of time, the luminance of red (R), green (G) or blue (B) will decay (age) to some extent. In order to eliminate this decay (age), a compensation mechanism such as De-burning is usually adopted.

[0003] For example, the compensation mechanism can achieve compensation by detecting a decay curve of a sample and then correcting the output gray scale according to the decay curve. However, as Figure 1 As shown in FIG. 1 and FIG. 2, during the process of checking the decay curve, the volatile memory (e.g. Random Access Memory (RAM)) needs to continuously write the current state (e.g. luminance, temperature, current, etc.) into the non-volatile memory (e.g. Flash) every certain period of time (e.g. 1 second), so that the action of flashing the Flash becomes very frequent and is prone to errors, especially in the case of abnormal power failure, which is even more serious and even causes the Flash to start recording from scratch, which needs to be improved. SUMMARY

[0004] Therefore, the present application proposes an organic light emitting diode display device and an operating method thereof, which effectively solve the above problems encountered in the prior art.

[0005] According to a preferred embodiment of the present application, an organic light emitting diode display device is provided. 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 organic light emitting diode panel and receives accumulated current data from the organic light emitting diode 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 part in a non-erasable manner and the secondary recording unit records the second part in an erasable manner.

[0006] In an embodiment, the accumulated current data is divided into the first part and the second part according to an accumulated current lookup table including the at least one threshold, and when the second part recorded by the secondary recording unit reaches the at least one threshold, the primary recording unit is triggered to update the first part recorded thereby.

[0007] In one embodiment, when the secondary recording unit is abnormal, only the first part recorded by the primary recording unit is kept, and the second part recorded by the secondary recording unit is cleared.

[0008] In one embodiment, 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 and (n-k) bits, respectively.

[0009] In one embodiment, the primary recording unit accumulates bit by bit in a non-erasing manner to generate k primary recording points each time the first part is recorded.

[0010] In one embodiment, the secondary recording unit accumulates normally in an erasing manner to generate (2 n-k -1) secondary recording points each time the second part is recorded.

[0011] In one embodiment, the primary recording unit and the secondary recording unit together generate (2 n-k )*k recording points.

[0012] In one embodiment, when the non-volatile memory is abnormal, the recording can be continued from the nearest primary recording point.

[0013] In one embodiment, the organic light emitting diode display device further comprises 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 accessing the accumulated current data from the non-volatile memory to the volatile memory.

[0014] In one embodiment, the organic light emitting diode display device further comprises a compensation unit coupled between the volatile memory and the organic light emitting diode panel, for calculating a compensation value according to the accumulated current data when the volatile memory accesses the accumulated current data from the non-volatile memory, and for compensating the organic light emitting diode panel according to the compensation value.

[0015] Another preferred embodiment according to the present application is an operating method of an organic light emitting diode display device. In this embodiment, the organic light emitting diode display device comprises an organic light emitting diode panel, a volatile memory and a non-volatile memory. The method comprises 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 divided into a first part and a second part according to at least one threshold. The non-volatile memory comprises a primary recording unit and a secondary recording unit; and the primary recording unit records the first part in a non-erasing manner and the secondary recording unit records the second part in an erasing manner.

[0016] In one embodiment, the method divides the accumulated current data into a first part and a second part according to a cumulative current lookup table including the at least one threshold value, and triggers the primary recording unit to update the first part recorded thereby when the second part recorded by the secondary recording unit reaches the at least one threshold value.

[0017] In one embodiment, 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.

[0018] In one embodiment, 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 and (n-k) bits, respectively.

[0019] In one embodiment, the primary recording unit adopts a non-erasing mode to accumulate bit by bit to generate k primary recording points each time the first part is recorded.

[0020] In one embodiment, the secondary recording unit adopts a normal erasing mode to accumulate normally to generate (2 n-k -1) secondary recording points each time the second part is recorded.

[0021] In one embodiment, the primary recording unit and the secondary recording unit together generate (2 n-k )*k recording points.

[0022] In one embodiment, when the non-volatile memory is abnormal, the method can return to the closest primary recording point and continue recording.

[0023] 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.

[0024] 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 compensating the organic light-emitting diode panel according to the compensation value.

[0025] Compared with the prior art, the organic light emitting diode display device and the operation method thereof divide the non-volatile memory into a main recording unit recording a first part of the accumulated current data in a non-erasing manner and a secondary recording unit recording a second part of the accumulated current data in an erasable manner. When the second part recorded by the secondary recording unit reaches a threshold value, the main recording unit is triggered to update the first part recorded thereby. Once the non-volatile memory has a phenomenon such as a flash writing exception, it can return to the nearest main recording point to continue recording without starting from the beginning, so that the De-burning compensation function of the organic light emitting diode display device can be realized, and the various disadvantages of the prior art can be effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A schematic diagram of the prior art for De-burning compensation of the flash memory.

[0027] Figure 2A and Figure 2B are schematic diagrams of the flow of normal and abnormal flash memory writing.

[0028] Figure 3 is a schematic diagram of an organic light emitting diode display device 3 in a specific embodiment of the present application.

[0029] Figure 4 is a schematic diagram of dividing the data block B stored in the volatile memory 31 into a first part B1 and a second part B2 and then backing up to the main recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32, respectively.

[0030] Figure 5 is a schematic diagram of the main recording unit 32A of the non-volatile memory 32 using non-erasing encoding.

[0031] Figure 6 is an embodiment of a lookup table corresponding to the accumulated current value encoding.

[0032] Figure 7 is a schematic diagram of dividing the 32-bit data block B stored in the volatile memory 31 into a 16-bit first part B1 and a 16-bit second part B2 and then backing up to the main recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32, respectively.

[0033] Figure 8 is a schematic diagram of dividing the n-bit data block B stored in the volatile memory 31 into a k-bit first part B1 and an (n-k) bit second part B2 and then backing up to the main recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32, respectively.

[0034] Figure 9 Fig. 1 is a schematic diagram of a non-volatile memory 32 in a flash memory card 1. Figure 8 Fig. 2 is a schematic diagram of the non-volatile memory 32 in Fig. 1 in a cumulative current recording process. n-k Fig. 3 is a schematic diagram of the non-volatile memory 32 in Fig. 1 in a cumulative current recording process.

[0035] Figure 10 Fig. 4 is an example of a time cumulative threshold value and a corresponding recovery point value.

[0036] Figure 11 Fig. 5 is a flowchart of an organic light emitting diode display device operation method in another embodiment of the present application.

[0037] Figure 12 Fig. 6 is a schematic diagram of the non-volatile memory 32 in Fig. 1 when an abnormality occurs in a cumulative current recording process.

[0038] Explanation of main element symbols:

[0039] R1... storage area

[0040] R2... storage area

[0041] S1... sector

[0042] S2... sector

[0043] a... step

[0044] b... step

[0045] c... step

[0046] d... step

[0047] 3... organic light emitting diode display device

[0048] 30... organic light emitting diode panel

[0049] 31... volatile memory

[0050] 32... non-volatile memory

[0051] 32A... main recording unit

[0052] 32B... sub recording unit

[0053] 33... update unit

[0054] 34... backup unit

[0055] 35... compensation unit

[0056] B…data block

[0057] B1…first part

[0058] B2…second part

[0059] MP1~MPK…main points

[0060] SP1~SP(2 n-k -1)…sub points

[0061] LUT_1~LUT_K…recovery points

[0062] S10~S19…steps DETAILED DESCRIPTION

[0063] A preferred embodiment according to the present application is an organic light emitting diode display device. In this embodiment, the organic light emitting diode display device has a function of performing De-burning compensation according to accumulated current data and returning to the nearest main point after a write exception of a non-volatile memory and then continuing recording, but is not limited thereto.

[0064] Referring to Figure 3 , Figure 3 is a schematic diagram of the organic light emitting diode display device in this embodiment. As Figure 3 shown, the organic light emitting diode display device 3 can 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 update 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.

[0065] In practical applications, the volatile memory 31 refers to a memory whose stored data will disappear when the power supply is interrupted, such as a static random access memory (SRAM) or a dynamic random access memory (DRAM), but is not limited thereto. The non-volatile memory 32 refers to a memory whose stored data will not disappear when the power supply is interrupted, and the stored data can be read after the power supply is restored, such as a flash memory or a read-only memory (ROM), but is not limited thereto.

[0066] The volatile memory 31 receives the accumulated current data from the organic light-emitting diode panel 30 through the updating 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 to back up the accumulated current data so that the volatile memory 31 can 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 performs De-burning compensation on the organic light-emitting diode panel 30 according to the compensation value.

[0067] It is noted that, as shown in Figure 4 The non-volatile memory 32 can 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 divide the data blocks B into a first part B1 and a second part B2 according to at least one threshold value (i.e., a threshold value of the accumulated current value), and then backup the first part B1 and the second part B2 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 without erasing, and the secondary recording unit 32B records the second part B2 by normal accumulation with erasing.

[0068] For example, as shown in Figure 5As shown, the first part Bl recorded by the main recording unit 32A of the non-volatile memory 32 is recorded in a non-erasing manner (i.e. non-erasing encoding), such as sequentially accumulating from 111...111 to 111...110, 111...100, 111...000,..., 110...000, 100...000, and 000...000, but not limited thereto.

[0069] In actual applications, the volatile memory 31 can divide the accumulated current data stored therein into the first part Bl and the second part B2 according to an accumulated current lookup table (e.g. Figure 6 ) including at least one threshold value (i.e. threshold value of accumulated current value), and then backup the first part Bl and the second part B2 to the main 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 any threshold value of accumulated current value, the main recording unit 32A of the non-volatile memory 32 will be triggered to update the first part Bl recorded thereby (e.g. from 111...111 to 111...110, but not limited thereto).

[0070] When the secondary recording unit 32B of the non-volatile memory 32 has a phenomenon such as a flash abnormality, the non-volatile memory 32 will only retain the first part Bl recorded by the main recording unit 32A in a non-erasing manner, and clear the second part B2 recorded by the secondary recording unit 32B in an erasing manner.

[0071] Please refer to Figure 6 , Figure 6 for an embodiment of the accumulated current value (threshold value) corresponding encoding lookup table. As shown, Figure 6 , assuming that the accumulated current values (threshold values) corresponding to the encodings 0-7 of 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 values stored by the volatile memory 31 can be divided into the first part Bl and the second part B2 according to this accumulated current lookup table, and then backup to the main 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 reaches at least one threshold value, the main recording unit 32A will be triggered to update the first part Bl recorded thereby.

[0072] For example, when the accumulated current value is 12500, since the accumulated current value 12500 is between the threshold value 10000 and the threshold value 20000, and the threshold value 10000 corresponds to the code 1 and the excess current value of the accumulated current value 12500 beyond the threshold value 10000 is 2500, 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 B2 recorded by the secondary recording unit 32B 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 the code 2 and the excess current value of the accumulated current value 20050 beyond the threshold value 20000 is 50, the accumulated current value 20050 can be divided into the first part B1=2 and the second part B2=50, that is, the main recording unit 32A updates the first part B1 recorded by it from the original 1 to 2 and the second part B2 recorded by the secondary recording unit 32B is 50. The rest can be similarly deduced and will not be described here.

[0073] Please refer to Figure 7 , in an embodiment, assuming that the volatile memory 31 stores a 32-bit data block B, it can be divided into a 16-bit first part B1 and a 16-bit second part B2, for example, and then backed up to the main recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32, but not limited thereto.

[0074] Please refer to Figure 8 , in another embodiment, assuming that the volatile memory 31 stores an n-bit data block B, it can be divided into a k-bit first part B1 and an (n-k) bit second part B2, for example, and then backed up to the main recording unit 32A and the secondary recording unit 32B of the non-volatile memory 32. Wherein, n and k are positive integers and n is greater than k.

[0075] It should be noted that the main recording unit 32A of the non-volatile memory 32 accumulates bit by bit without erasing when recording the k-bit first part B1 each time, which can generate k main recording points. The secondary recording unit 32B of the non-volatile memory 32 normally accumulates when recording the (n-k) bit second part B2 each time, which can generate (2 n-k -1) secondary recording points. Therefore, the main recording unit 32A and the secondary recording unit 32A of the non-volatile memory 32 should generate a total of (2 n-k )*k recording points, but not limited thereto.

[0076] For example, as shown in Figure 9 , in the cumulative current recording process,Figure 8 The non-volatile memory 32 in the memory unit 30 can form k primary recording points by the primary recording unit 32A which records in a non-erasing manner and can form (2 n-k -1) secondary recording points between two adjacent primary recording points by the secondary recording unit 32B which records in an erasing manner, but not limited thereto. As to Figure 10 is an embodiment of the values of the different time accumulation thresholds and the corresponding recovery points, but not limited thereto.

[0077] According to another preferred embodiment of the present application, there is provided an OLED display device operating method. In this embodiment, the OLED display device includes an OLED panel, a volatile memory and a non-volatile memory. The volatile memory is coupled between the OLED panel and the non-volatile memory. The non-volatile memory includes a primary recording unit and a secondary recording unit.

[0078] The OLED display device operating method can include the following steps: the volatile memory receives accumulated current data from the OLED 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 unit of the non-volatile memory records the second part in an erasing manner.

[0079] In one embodiment, the method can 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 the volatile memory accesses the accumulated current data from the non-volatile memory, calculating a compensation value according to the accumulated current data and compensating the OLED panel according to the compensation value, but not limited thereto.

[0080] In practical applications, the method can divide the accumulated current data into the first part and the second part according to an accumulated current lookup table including at least one threshold, and when the second part recorded by the secondary recording unit reaches the at least one threshold, the method triggers the primary recording unit to update the first part recorded thereby. 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, but not limited thereto.

[0081] Please refer to Figure 11 , Figure 11 is a flowchart of the OLED display device operating method in another embodiment of the present application. As shown in Figure 11 , the OLED display device operating method includes the following steps:

[0082] Step S10: receive / decode data (i.e. accumulated current data);

[0083] Step S11: determine whether the data is abnormal?

[0084] If the result of step S11 is yes, then step S14 is performed: update the first part recorded by the primary recording unit and clear the second part recorded by the secondary recording unit;

[0085] If the result of step S11 is no, then step S12 is performed: refresh the data according to the DBN operation result of step S13;

[0086] After step S12, step S15 is performed: determine whether it is a primary recording point according to the reference lookup table of step S16?

[0087] If the result of step S15 is yes, then step S17 is performed: update the first part recorded by the primary recording unit;

[0088] If the result of step S15 is no, then step S18 is performed: update the second part recorded by the secondary recording unit; and

[0089] After steps S17 and S18, step S19 is performed: encode / output the data.

[0090] In one embodiment, if the 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. Here, the primary recording unit adopts a non-erasing mode to accumulate bit by bit to generate k primary recording points each time the first part is recorded; the secondary recording unit adopts a normal erasing mode to accumulate to generate (2 n-k -1) secondary recording points each time the second part is recorded. Therefore, the primary recording unit and the secondary recording unit can generate a total of (2 n-k )*k recording points.

[0091] When the non-volatile memory has a phenomenon such as a flash abnormality, the method can return to the closest primary recording point to continue recording. For example, as shown in Figure 12 Fig. 4, when the non-volatile memory has a flash abnormality during the accumulated current recording process, since the abnormality occurs between the primary recording points MP2 and MP3, the method can return to the closest primary recording point MP2 to continue recording without starting from the beginning, but is not limited thereto.

[0092] Compared with the prior art, the organic light emitting diode display device and the operation method thereof divide the non-volatile memory into a main recording unit for recording a first part of the accumulated current data in a non-erasing manner and a secondary recording unit for recording a second part of the accumulated current data in an erasing manner. When the second part recorded by the secondary recording unit reaches a threshold value, the main recording unit is triggered to update the first part recorded thereby. Once the non-volatile memory has a phenomenon such as a flash abnormality, it can continue to record from the nearest main recording point without starting from the beginning, so that the De-burning compensation function of the organic light emitting diode display device can be realized, and the various disadvantages of the prior art can be effectively improved.

Claims

1.An organic light emitting diode display device, characterized by, The organic light emitting diode display device comprises an organic light emitting diode panel, a volatile memory coupled to the organic light emitting diode panel, the volatile memory receiving accumulated current data from the organic light emitting diode 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 one threshold, the non-volatile memory comprises a primary recording unit and a secondary recording unit, the primary recording unit records the first part in a non-erasing manner and the secondary recording unit records the second part in an erasing manner, 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 and (n-k) bits respectively, the primary recording unit accumulates bit by bit to generate k primary recording points when recording the first part each time in a non-erasing manner, and when the non-volatile memory is abnormally written, it can return to the nearest primary recording point and continue recording. The accumulated current data is divided into the first part and the second part according to an accumulated current lookup table comprising the at least one threshold, and when the second part recorded by the secondary recording unit reaches the at least one threshold, the primary recording unit is triggered to update the first part recorded thereby. When the secondary recording unit is abnormal, only the first part recorded by the primary recording unit is retained, and the second part recorded by the secondary recording unit is cleared. The organic light emitting diode display device further comprises a backup unit coupled between the volatile memory and the non-volatile memory, the backup unit 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. The organic light emitting diode display device further comprises 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 calculates a compensation value according to the accumulated current data and compensates the organic light emitting diode panel according to the compensation value. The method for operating the organic light emitting diode display device comprising an organic light emitting diode panel, a volatile memory and a non-volatile memory, the method comprises the following steps: The secondary recording unit normally accumulates in an erasable manner to generate (2 n-k -1) secondary recording points each time the second part is recorded. 2.The organic light emitting diode display device of claim 1, wherein The volatile memory receives accumulated current data from the organic light emitting diode panel; 3.The organic light emitting diode display device of claim 1, wherein 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, the non-volatile memory comprises a primary recording unit and a secondary recording unit; and 4.The organic light emitting diode display device of claim 1, wherein The primary recording unit and the secondary recording unit together can produce (2 n-k )*k recording points. 5.The organic light emitting diode display device of claim 1, wherein The primary recording unit records the first part in a non-erasing manner and the secondary recording unit records the second part in an erasing manner; The primary recording unit accumulates bit by bit to generate k primary recording points when recording the first part each time in a non-erasing manner, and when the non-volatile memory is abnormally written, it can return to the nearest primary recording point and continue recording. 6.The organic light emitting diode display device of claim 1, wherein ​ ​ 7. A method for operating an organic light-emitting diode (OLED) display device, characterized in that, ​ ​ ​ ​ 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 and (n-k) bits respectively, the primary recording unit accumulates bit by bit without erasing to generate k primary recording points when recording the first part each time, when the non-volatile memory is brushed abnormally, the method can return to the closest primary recording point to continue recording; The secondary recording unit normally accumulates in an erasable manner to generate (2 n-k -1) secondary recording points each time the second part is recorded. 8.The operating method of an organic light-emitting diode display device according to claim 7, wherein, The method divides the cumulative current data into the first part and the second part according to a cumulative current lookup table including the at least one threshold, when the second part recorded by the secondary recording unit reaches the at least one threshold, the method triggers the primary recording unit to update the first part recorded thereby. 9.The operating method of the organic light emitting diode display device of claim 7, 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. 10.The operating method of the organic light emitting diode display device of claim 7, wherein The primary recording unit and the secondary recording unit together can produce (2 n-k )*k recording points. 11.The operation method of the organic light emitting diode display device of claim 7, wherein Further comprising: Backup the cumulative current data from the volatile memory to the non-volatile memory; And Access the cumulative current data from the non-volatile memory to the volatile memory. 12.The operation method of the organic light emitting diode display device of claim 7, wherein Further comprising: When the volatile memory accesses the cumulative current data from the non-volatile memory, a compensation value is calculated according to the cumulative current data and the organic light emitting diode panel is compensated according to the compensation value.

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