TWI804281B - Brightness Compensation Method for OLED Display Panel, OLED Display Device, and Information Processing Device - Google Patents

Abstract

The present invention mainly discloses a brightness compensation method of an OLED display panel, which is executed by a display driver chip and includes the following steps: receiving an input display data; determining a target brightness according to a decay parameter and an initial target brightness; according to the target brightness , the decay parameter, the input display data, a display digital brightness value, and a frame rate to determine a first compensation data; according to the target brightness, a decay parameter statistical data, a highest grayscale data contained in the input display data , the display digital luminance value, and the frame rate determine a second compensation data; perform a subtraction operation on the second compensation data and the first compensation data, thereby obtaining a compensation data; and the input display data and the compensation An addition operation is performed on the data to obtain an output display data. In the case of applying the brightness compensation method of the present invention, the compensated target brightness of the OLED display panel will gradually decrease with the use time, thereby prolonging both the compensation algorithm and the lifespan of the OLED display panel.

Description

Brightness Compensation Method for OLED Display Panel, OLED Display Device, and Information Processing Device

The invention relates to the technical field of OLED display devices, in particular to a brightness compensation method of an OLED display panel.

It is known that organic light-emitting diodes (Organic Light-Emitting Diode, OLED) have the advantages of self-luminous characteristics, high brightness, high contrast, wide viewing angle, power consumption, high reaction rate, etc., so it has been widely used in self-luminous The manufacture of display panels includes active OLED (ie, AMOLED) display panels and passive OLED (ie, PMOLED) display panels.

FIG. 1 is a block diagram of a conventional OLED display device. As shown in FIG. 1 , the OLED display device 1a is applied in an electronic device (such as a smart phone), and mainly includes an OLED display panel 11a and at least one display driver chip 12a. In the application field of smart phones, the OLED display device 1a is required to have properties such as high frame rate, faster response speed, brighter and clearer picture quality, and the like. However, the OLED display panel 11a made of organic materials has an aging problem, so that the OLED display panel 11a will have uneven display brightness after being used for a period of time. Therefore, in order to solve the above problems, Document 1 proposes a pixel compensation method for an OLED display panel. Here, Document 1 refers to Kim et.al, "A Compensation Algorithm for Degradation in AMOLED Displays", DOI:10.1002/sdtp.12596.

FIG. 2 is a block diagram of a display driver chip included in the OLED display device shown in FIG. 1 . As shown in Figure 2, the display driver chip 12a is applied with the compensation method for the OLED display panel proposed in Document 1, so a brightness compensation module 121a is provided inside it, and the brightness compensation module 121a includes: a compensation unit 1211a, an operation unit 1212a and an accumulation unit 1213a. After receiving an input display data including R/G/B data transmitted by the host computer 2a (such as: the application processor of a smart phone) through the DBI (Display Bus Interface) protocol, the compensation unit 1211a uses the mathematical formula G '=f(G, C) performs a compensation operation on the input display data, and then generates an output display data. It should be known that G is the display data before compensation (that is, the gray scale value), G' is the display data after compensation (that is, the gray scale value), and C is the compensation operator. In more detail, the accumulating unit 1213a accumulates the decay factor for each time according to the output display data and the mathematical formula A(n)=A(n-1)+S, and stores it in a memory 122a . In this way, when performing the next compensation calculation, the calculation unit 1212a will extract the decay factor stored in the memory 122a, and then calculate the compensation operator (that is, the C value), so that the compensation unit 1211a will perform the next calculation. The updated compensation operator is used in one compensation operation.

FIG. 3A is a time-brightness curve of the OLED display panel 11a. It can be seen from FIG. 3A that the degree of decrease in brightness of the OLED display panel 11 a gradually increases with time of use. Please continue to refer to FIG. 3B , which is a time-brightness curve of the OLED display panel 11a after the compensation method is adopted. As can be seen from FIG. 3B , the existing compensation method (hereinafter referred to as “DBI algorithm”) is to increase the input display data correspondingly according to the degree of brightness decrease of the OLED display panel 11a, so that the OLED display panel 11a will not be driven to display images. Uneven display brightness occurs.

It is worth noting that as the number of recalculations of the compensation operator increases, the successively accumulated decay factors will eventually fill up the storage space of the memory 122a. At this time, as shown in FIG. 2 and FIG. 3B , the decay factor extracted by the computing unit 1212 a from the memory 122 a will not change any more, so that the compensation operator cannot continue to be updated. In this case, it can be considered that the lifetime of the DBI algorithm has been exhausted. In order to solve this problem, the simplest solution is to increase the storage space of the memory 122a, thereby increasing the calculation times of the compensation operator; however, this also means that the hardware cost increases accordingly.

As shown in Figure 3A and Figure 3B, it can be seen that when the life of the DBI algorithm is exhausted, the brightness of the OLED panel 11a decays faster, and the degradation is more serious than that of the OLED panel 11a without aging compensation . Therefore, it can be reasonably considered that the conventional DBI algorithm invisibly accelerates the aging degree of the OLED panel 11a during the process of performing the brightness compensation of the OLED panel 11a. Obviously, the conventional DBI algorithm is not ideal.

It can be seen from the above description that there is an urgent need in the art for a new brightness compensation method for OLED display panels.

The main purpose of the present invention is to provide a brightness compensation method for an OLED display panel, which is implemented by a display driver chip. In the case of applying the brightness compensation method of the present invention, the compensated target brightness of the OLED display panel will gradually decrease with the use time, thereby prolonging the compensation algorithm and the life of the OLED display panel at the same time.

In order to achieve the above object, the present invention proposes a brightness compensation method for the OLED display panel, which is executed by a display driver chip, and includes the following steps: receiving an input display data; determining a target brightness according to a decay parameter and an initial target brightness; determining a first compensation data according to the target brightness, the fading parameter, the input display data, a display digital brightness value (Digital Brightness Value, DBV), and a frame rate; determining a second compensation data according to the target brightness, a decay parameter statistical data, a highest gray scale data included in the input display data, the display digital brightness value, and the frame rate; performing a subtraction operation on the second compensation data and the first compensation data, thereby obtaining compensation data; and An addition operation is performed on the input display data and the compensation data to obtain an output display data for driving an OLED display panel.

In one embodiment, the OLED display panel includes M×N pixels, each pixel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the decay parameter includes a red sub-pixel component, a green sub-pixel component and a blue sub-pixel component.

In one embodiment, the decay parameter statistic includes a red sub-pixel component statistic, a green sub-pixel component statistic and a blue sub-pixel component statistic.

In one embodiment, the display driver chip performs the following steps to determine the target brightness: performing a statistical process on the plurality of red sub-pixel components, the plurality of green sub-pixel components, and the plurality of blue sub-pixel components, so as to obtain the decay parameter statistical data; Finding a decay parameter corresponding to the decay parameter statistical data from a two-dimensional lookup table including a plurality of decay parameters and a plurality of brightness ratios, thereby obtaining a brightness ratio corresponding to the decay parameter; and A multiplication operation is performed on the brightness ratio and the initial target brightness to obtain the target brightness.

Moreover, the present invention also provides an OLED display device, which includes at least one display driver chip and an OLED display panel, and is characterized in that, after receiving an input display data, the display driver chip executes the OLED display of the present invention as described above. The brightness compensation method of the panel obtains an output display data, so as to perform display driving on the OLED display panel according to the output display data.

The present invention also provides an OLED display device, which includes at least one display driver chip and an OLED display panel, and is characterized in that a brightness compensation module is arranged inside the display driver chip, and the brightness compensation module includes: a target brightness calculation unit configured to determine a target brightness according to a decay parameter and an initial target brightness; A compensation data calculation unit configured to determine a first compensation data according to the target brightness, the fading parameter, the input display data, a display digital brightness value (Digital Brightness Value, DBV), and a frame rate, and is simultaneously configured to determine a second compensation data according to the target brightness, a decay parameter statistical data, a highest grayscale data contained in the input display data, the display digital brightness value, and the frame rate, and configured to performing a subtraction operation on the second compensation data and the first compensation data to obtain compensation data; and An operation unit is configured to perform an addition operation on the input display data and the compensation data, so as to obtain an output display data for driving the OLED display panel.

In one embodiment, the OLED display panel includes M×N pixels, each pixel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, and the decay parameter includes a red sub-pixel component, a green sub-pixel component and a blue sub-pixel component.

In one embodiment, the decay parameter statistic includes a red sub-pixel component statistic, a green sub-pixel component statistic and a blue sub-pixel component statistic.

In one embodiment, the target brightness calculation unit performs the following steps to determine the target brightness: performing a statistical process on the plurality of red sub-pixel components, the plurality of green sub-pixel components, and the plurality of blue sub-pixel components, so as to obtain the decay parameter statistical data; Finding a decay parameter corresponding to the decay parameter statistical data from a two-dimensional lookup table including a plurality of decay parameters and a plurality of brightness ratios, thereby obtaining a brightness ratio corresponding to the decay parameter; and A multiplication operation is performed on the brightness ratio and the initial target brightness to obtain the target brightness.

The present invention also provides an information processing device, which has the aforementioned OLED display device of the present invention. In a feasible embodiment, the information processing device is selected from smart TVs, smart phones, smart watches, smart bracelets, tablet computers, notebook computers, all-in-one computers, access control devices, and electronic door An electronic device in the group of locks.

In order to enable your examiners to further understand the structure, features, purpose, and advantages of the present invention, drawings and detailed descriptions of preferred specific embodiments are hereby attached.

Please refer to FIG. 4 , which shows a block diagram of an OLED display device applying a brightness compensation method for an OLED display panel of the present invention. As shown in FIG. 4 , the OLED display device 1 is applied in an electronic device (such as a smart phone), and mainly includes an OLED display panel 11 and at least one display driver chip 12 . It should be noted that, in the case of applying the brightness compensation method of the OLED display panel of the present invention, the display driver chip 12 is provided with a brightness compensation module 121 inside. Further, FIG. 5 is a block diagram of a display driver chip included in the OLED display device shown in FIG. 4 . As shown in FIG. 5 , the brightness compensation module 121 disposed inside the display driver chip 12 includes: a target brightness calculation unit 1211 , a compensation data calculation unit 1212 and a calculation unit 1213 .

Continue to refer to FIG. 5 , and please refer to FIG. 6 at the same time, which is a flow chart of a brightness compensation method for an OLED display panel of the present invention. As shown in FIG. 5 and FIG. 6 , the brightness compensation method of the OLED display panel of the present invention includes a plurality of steps for the display driver chip 12 to execute. In step S1, the display driver chip 12 receives an input display data including R/G/B data sent by a host computer (such as an application processor of a smartphone). Then, the display driver chip 12 performs a brightness compensation operation on the input display data by using the brightness compensation module 121 included therein. After the brightness compensation operation is completed, the input display data is converted into an output display data for driving the OLED display panel 11 .

As shown in FIGS. 5 and 6 , in step S2 , the display driver chip 12 uses its target brightness calculation unit 1211 to determine a target brightness according to a decay parameter and an initial target brightness. It should be known that an OLED display panel 11 generally includes M×N pixels, and each pixel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel. Therefore, in order to efficiently adjust the gray scale of each red sub-pixel, green sub-pixel and a blue sub-pixel, the storage space of the memory 122 (as shown in FIG. 5 ) is usually planned as A plurality of storage blocks are used to store decay parameters (or called decay factors) corresponding to each sub-pixel. For example, FIG. 7 shows a block diagram of the storage blocks of the memory 122 . As shown in FIG. 7, a decay parameter (DF) corresponding to a pixel includes a red sub-pixel component (DF_R), a green sub-pixel component (DF_G) and a blue sub-pixel component (DF_B), And the memory 122 stores M×N decay parameters (DF).

As shown in FIG. 5 , FIG. 6 and FIG. 7 , the target brightness calculation unit 1211 executes multiple detailed steps to determine the target brightness. First, a statistical process is performed on the plurality of red sub-pixel components (DF_R), the plurality of green sub-pixel components (DF_G) and the plurality of blue sub-pixel components (DF_B), thereby obtaining a Decay parameter statistics. The statistical processing is, for example, finding a maximum value (ie, DF_R_max) from the plurality of red sub-pixel components (DF_R), and finding a maximum value (ie, DF_G) from the plurality of green sub-pixel components (DF_G). , DF_G_max), and find a maximum value (ie, DF_B_max) from the plurality of blue sub-pixel components (DF_B). Moreover, in a feasible embodiment, the statistical processing may also be to find the median or calculate the average.

Next, the target brightness calculation unit 1211 finds a decay parameter corresponding to the statistical data of the decay parameter from a two-dimensional lookup table including a plurality of decay parameters and a plurality of brightness ratios, thereby obtaining the corresponding decay parameter A brightness ratio of . For example, FIG. 8 shows a two-dimensional look-up table including a plurality of decay parameters and a plurality of brightness ratios. In FIG. 8 , the x-axis and y-axis respectively represent the decay parameter (DF) and the luminance ratio, wherein the luminance ratio is the ratio of the target luminance (Target luminance) to the initial target luminance. It should be known that the initial target brightness is the pixel brightness before compensation, and the target brightness is the pixel brightness after compensation. Therefore, the two-dimensional search representation of FIG. 8 is established after statistical measurement data. Therefore, a decay parameter statistical data (such as: DF_max) can be obtained by completing the statistical processing, and the decay parameter statistical data includes a red sub-pixel component statistical data (DF_R_max), a green sub-pixel component statistical data (DF_G_max) and A blue sub-pixel component statistical data (DF_B_max). Next, a decay parameter (DF) corresponding to the decay parameter statistical data (DF_max) can be found in the two-dimensional lookup table shown in FIG. 8 , so as to obtain a brightness ratio corresponding to the decay parameter. Finally, the target brightness can be obtained by performing a multiplication operation on the brightness ratio and the initial target brightness.

As shown in FIG. 5 and FIG. 6 , the flow of the method for brightness compensation of the OLED display panel of the present invention is followed by step S3. In step S3, the display driver chip 12 utilizes its compensation data calculation unit 1212 to base on the target brightness (obtained in the aforementioned step S2), the fading parameter (obtained by accessing the memory 122), the input display data ( Received from the host computer), a display digital brightness value (Digital Brightness Value, DBV), and a frame rate determines a first compensation data, wherein DBV is a display digital brightness value corresponding to the display brightness level set by the user. Next, in step S4, the display driver chip 12 utilizes its compensation data calculation unit 1212 to display according to the target brightness, the statistical data of the degradation parameters (such as: maximum value, median or average value), and the input A highest grayscale data included in the data, the display digital brightness value (DBV), and the frame rate determine a second compensation data.

It is supplemented that, according to the design of the present invention, the aforementioned first compensation data is conventional brightness compensation data, which is calculated by using a conventional DBI algorithm. In particular, the aforementioned second compensation data is unconventional brightness compensation data. Under the conventional DBI algorithm, the decay parameters used by the conventional DBI algorithm are replaced with the statistical data of the decay parameters, and the conventional DBI is replaced with the highest gray scale data. The input display data used by the algorithm.

As shown in FIG. 5 and FIG. 6, in step S5, the display driver chip 12 uses its compensation data calculation unit 1212 to perform a subtraction operation on the second compensation data and the first compensation data, thereby obtaining a compensation data (offset). Finally, in step S6, the display driver chip 12 uses its computing unit 1213 to perform an addition operation on the input display data and the compensation data (offset), so as to obtain an output display data for driving the OLED display panel 11 .

Please refer to FIG. 9A , which is a time-brightness curve of an OLED display panel after using a conventional brightness compensation method. On the other hand, FIG. 9B is a time-brightness curve of the OLED display panel after adopting the brightness compensation method of the present invention. Here, the conventional brightness compensation method is called DBI algorithm, and the brightness compensation method of OLED display panel according to the present invention is called modified version (Modified) DBI algorithm. In FIGS. 9A and 9B , at time T _D1 , the lifetime of the DBI algorithm has been exhausted. It can be seen that when the life of the DBI algorithm is exhausted, the brightness of the OLED panel 11 decays very quickly. On the other hand, at time T _D2 , the lifetime of the modified DBI algorithm of the present invention has been exhausted. It can be seen that after the lifetime of the modified version of the DBI algorithm of the present invention is exhausted, the brightness of the OLED panel 11 declines at a relatively gentle rate. At the same time, according to FIG. 9A and FIG. 9B, it can be found that in the case of applying the luminance compensation method of the present invention, the luminance of the OLED display panel 11 after compensation is not constant (please refer to the interval 0-T _D2 ), but also varies with The use time gradually decreases, but such a brightness compensation method can prolong the compensation algorithm and the lifespan of the OLED display panel 11 at the same time.

It is supplemented that, when performing brightness compensation, the display driver chip 12 usually adopts a partition compensation method. To put it simply, the OLED display panel 11 is divided into a plurality of display blocks, and then brightness compensation is performed on the plurality of display blocks. In the process of partition compensation, it will be found that the decay parameters (DF) of some display blocks indicate that the stress degree of OLED pixels is relatively slight (that is, the degree of aging); relatively, the decay parameters (DF) of some display blocks Point out that the stress level of OLED pixels is relatively serious. It should be understood that for a display block with a slight degree of stress, the value of the calculated second compensation data has a high probability of being smaller than the value of the first compensation data, resulting in the final calculated compensation data (offset) is a negative value. In other words, when performing partition compensation, the display driver chip 12 will perform negative compensation on the display blocks with a relatively slight stress. For example, the following table (1) is exemplary data of partition compensation. Table 1) T0<T1<T2<T3<T4 T0 T1 T2 T3 T4 Target brightness (nit) 300 295 290 285 280 Stress serious area (grayscale value) 128 130 132 134 136 Stress slight area (grayscale value) 128 127 126 125 124

It should be understood that the time T0 indicates that the plurality of display blocks of the OLED display panel 11 are not aged and do not need to perform brightness compensation. In the case of applying the luminance compensation method of the OLED display panel described in the present invention, the target luminance is calculated to be 295 nits at time T1. Values must be positively compensated from 128 to 130, and conversely grayscale values for lightly aged or unaged display blocks must be negatively compensated from 128 to 127. By analogy, the target brightness at time T4 is calculated to be 280 nits. At this time, the grayscale value of the display block with serious aging (that is, greater stress) must be compensated from 134 at T3 to 136. Conversely, The grayscale value of the display block with slight aging or no aging must be negatively compensated from 125 of T3 to 124.

In this way, the above has completely and clearly described a brightness compensation method of an OLED display panel of the present invention; and, through the above, it can be known that the present invention has the following advantages:

(1) The present invention discloses a brightness compensation method of an OLED display panel, which is implemented by a display driver chip. In the case of applying the brightness compensation method of the present invention, the compensated target brightness of the OLED display panel will gradually decrease with the use time, thereby prolonging the compensation algorithm and the life of the OLED display panel at the same time.

(2) The present invention also provides an OLED display device, which includes at least one display driver chip and an OLED display panel, and the display driver chip is used to implement the aforementioned brightness compensation method for an OLED display panel of the present invention.

(3) The present invention also provides an information processing device having the aforementioned OLED display device of the present invention. Moreover, the information processing device is selected from the group consisting of smart TV, smart phone, smart watch, smart bracelet, tablet computer, notebook computer, all-in-one computer, access control device, and electronic door lock One of the electronic devices.

It must be emphasized that what is disclosed in the above-mentioned case is a preferred embodiment, and all partial changes or modifications derived from the technical ideas of this case and easily deduced by those familiar with the technology are all inseparable from the patent of this case. category of rights.

To sum up, regardless of the purpose, means and efficacy of this case, it shows that it is very different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. I implore your review committee to understand clearly and grant a patent as soon as possible to benefit you Society is for the Most Prayer.

1a: OLED display device

11a: OLED display panel

12a: Display driver chip

121a: brightness compensation module

1211a: compensation unit

1212a: arithmetic unit

1213a: accumulation unit

122a: memory

2a: PC

1: OLED display device

11:OLED display panel

12: Display driver chip

121:Brightness compensation module

1211: target brightness calculation unit

1212: compensation data calculation unit

1213: arithmetic unit

122: Memory

S1: Receive an input display data

S2: Determine a target brightness according to a decay parameter and an initial target brightness

S3: Determine a first compensation data according to the target brightness, the fading parameter, the input display data, a display digital brightness value, and a frame rate

S4: Determine a second compensation data according to the target brightness, a decay parameter statistical data, a highest gray scale data included in the input display data, the display digital brightness value, and the frame rate

S5: performing a subtraction operation on the second compensation data and the first compensation data, thereby obtaining a compensation data

S6: performing an addition operation on the input display data and the compensation data, thereby obtaining an output display data for driving an OLED display panel

1 is a block diagram of a known OLED display device; FIG. 2 is a block diagram of a display driver chip included in the OLED display device shown in FIG. 1; FIG. 3A is a time-brightness curve of an OLED display panel; Fig. 3B is the time-brightness curve of the OLED display panel after adopting the compensation method; 4 is a block diagram of an OLED display device applying a brightness compensation method for an OLED display panel of the present invention; 5 is a block diagram of a display driver chip included in the OLED display device shown in FIG. 4; 6 is a flow chart of a brightness compensation method for an OLED display panel according to the present invention; FIG. 7 is a block diagram of a storage block of a memory; Fig. 8 is a one-dimensional lookup table of a plurality of decay parameters and a plurality of brightness ratios; FIG. 9A is a time-brightness curve of an OLED display panel using a known brightness compensation method; and FIG. 9B is a time-brightness curve of the OLED display panel after adopting the brightness compensation method of the present invention.

S1: Receive an input display data

S2: Determine a target brightness according to a decay parameter and an initial target brightness

S3: Determine a first compensation data according to the target brightness, the fading parameter, the input display data, a display digital brightness value, and a frame rate

S4: Determine a second compensation data according to the target brightness, a decay parameter statistical data, a highest gray scale data included in the input display data, the display digital brightness value, and the frame rate

S5: performing a subtraction operation on the second compensation data and the first compensation data, thereby obtaining a compensation data

S6: performing an addition operation on the input display data and the compensation data, thereby obtaining an output display data for driving an OLED display panel

Claims (10)

A brightness compensation method for an OLED display panel, which is executed by a display driver chip, and includes the following steps: receiving an input display data; determining a target brightness according to a decay parameter and an initial target brightness; determining a first compensation data according to the target brightness, the fading parameter, the input display data, a display digital brightness value, and a frame rate; determining a second compensation data according to the target brightness, a decay parameter statistical data, a highest gray scale data included in the input display data, the display digital brightness value, and the frame rate; performing a subtraction operation on the second compensation data and the first compensation data, thereby obtaining compensation data; and An addition operation is performed on the input display data and the compensation data to obtain an output display data for driving an OLED display panel. The brightness compensation method of an OLED display panel according to claim 1, wherein the OLED display panel includes M×N pixels, and each pixel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel sub-pixels, and the decay parameters include a red sub-pixel component, a green sub-pixel component and a blue sub-pixel component. The brightness compensation method of an OLED display panel as described in Claim 2, wherein the statistical data of the fading parameters includes statistical data of a red sub-pixel component, a statistical data of a green sub-pixel component, and a statistical data of a blue sub-pixel component . According to the brightness compensation method of the OLED display panel described in claim 3, the display driver chip performs the following steps to determine the target brightness: for the plurality of the red sub-pixel components, the plurality of the green sub-pixel components and A statistical process is performed on the plurality of blue sub-pixel components to obtain statistical data of the decay parameters; a two-dimensional lookup table including a plurality of decay parameters and a plurality of luminance ratios is found to be related to the a decay parameter corresponding to the decay parameter statistical data, so as to obtain a brightness ratio corresponding to the decay parameter; and perform a multiplication operation on the brightness ratio and the initial target brightness, so as to obtain the target brightness. An OLED display device, which includes at least one display driver chip and an OLED display panel, characterized in that, after receiving an input display data, the display driver chip executes as described in any one of request item 1 to request item 4 The brightness compensation method of the OLED display panel obtains an output display data, so as to perform display driving on the OLED display panel according to the output display data. An OLED display device comprising at least one display driver chip and an OLED display panel, characterized in that a brightness compensation module is provided inside the display driver chip, and the brightness compensation module includes: a target brightness calculation unit configured to A target brightness is determined according to a decay parameter and an initial target brightness; a compensation data calculation unit is configured to determine a target brightness according to the target brightness, the decay parameter, an input display data, a display digital brightness value, and a frame rate. The first compensation data is configured to determine a second compensation data according to the target brightness, a decay parameter statistical data, a highest gray scale data contained in the input display data, the display digital brightness value, and the frame rate. , and configured to perform a subtraction operation on the second compensation data and the first compensation data, thereby obtaining compensation data; and An operation unit is configured to perform an addition operation on the input display data and the compensation data, so as to obtain an output display data for driving the OLED display panel. The OLED display device according to claim 6, wherein the OLED display panel includes M×N pixels, and each pixel includes a red sub-pixel, a green sub-pixel and a blue sub-pixel, And the decay parameter includes a red sub-pixel component, a green sub-pixel component and a blue sub-pixel component. The OLED display device as claimed in claim 7, wherein the decay parameter statistical data includes a red sub-pixel component statistical data, a green sub-pixel component statistical data and a blue sub-pixel component statistical data. In the OLED display device according to claim 8, the target luminance calculation unit performs the following steps to determine the target luminance; performing a statistical process on the plurality of red sub-pixel components, the plurality of green sub-pixel components, and the plurality of blue sub-pixel components, so as to obtain the decay parameter statistical data; Finding a decay parameter corresponding to the statistical data of the decay parameter from a two-dimensional lookup table including a plurality of decay parameters and a plurality of brightness ratios, so as to obtain a brightness ratio corresponding to the decay parameter; A multiplication operation is performed on the brightness ratio and the initial target brightness to obtain the target brightness. An information processing device, characterized by having the OLED display device described in any one of claim 6 to claim 9.

Images