TWI780744B - Pixel compensation method for OLED display panel, OLED display device, and information processing device - Google Patents

Abstract

The invention mainly discloses a pixel compensation method of an OLED display panel, which is executed by a display driver chip. According to the present invention, a frame of output display data is obtained after a pixel compensation operation is performed on a frame of input display data, and a plurality of first compensation parameters are obtained after an aging model update operation is completed according to the output display data. In particular, the present invention further performs a data reconstruction process on the plurality of first compensation parameters, so as to compress each of the first compensation parameters, so as to obtain the plurality of second compensation parameters. Therefore, the data volume of the second compensation parameter is smaller than the data volume of the first compensation parameter. Finally, the plurality of second compensation parameters are stored in a memory. In this way, even if the fineness of the pixel compensation operation increases with the increase of the panel resolution, the capacity of the original memory is sufficient to store the second compensation parameter with a relatively small amount of data, and there is no need to further increase the memory storage space.

Description

Pixel 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 pixel 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 active OLED (ie, PMOLED) display panels.

FIG. 1 shows 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 a display driving circuit 12a, wherein the display driving circuit 12a includes at least one Display driving chips, and the display driving chips all have a timing control unit, a gate (column) driving unit and a source (row) driving unit. 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 aging problems, so that after a period of use, the OLED display panel 11a will have afterimages, uneven display brightness and the like.

In order to solve these 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 shows a block diagram of a display driving chip included in the display driving circuit of the OLED display device shown in FIG. 1 . As shown in FIG. 2 , the display driver chip 121a is applied with the OLED display panel compensation method proposed in Document 1, and the display driver chip 121a is provided with a compensation unit 1211a, a computing unit 1212a and an accumulation unit 1213a. After receiving an input display data including R/G/B data transmitted by the host processor 10a through the DBI (Display Bus Interface) protocol, the compensation unit 1211a uses the mathematical formula G'=f(G, C) to calculate the Compensation operation is performed on the input display data, and then an output display data is generated. 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 completes an aging model update operation according to the output display data and the mathematical formula A(n)=A(n-1)+S, thereby obtaining relevant compensation parameters and storing them in a memory In the body 122a. Among them, S is a mathematical function related to aging modeling, and it is represented by S=f(G). In this way, before the next compensation operation, the calculation unit 1212a will extract the relevant compensation parameters stored in the memory 122a, and then calculate the compensation operator (ie, C value), so that the compensation unit 1211a will perform the next compensation operation. The updated compensation operator is used in the compensation calculation.

Continue referring to FIG. 3 , which shows a block diagram of the internal units of the memory shown in FIG. 2 . As shown in FIG. 3 , in order to efficiently compensate each pixel (Pixel), the conventional technology usually plans the storage space of the memory 122a into a plurality of storage blocks 1221a, thereby utilizing the corresponding storage areas Block 1221a stores related compensation parameters of the corresponding pixel (Pixel).

FIG. 4 shows a block diagram of a storage block shown in FIG. 3 . As shown in FIG. 4, in general, the storage space of a storage block 1221a is 36 bits, and the compensation parameters (ie, DF(x, y)) stored in the storage block 1221a include R components (ie , DF_R(x,y)), a G component (ie, DF_G(x,y)), and a B component (ie, DF_B(x,y)). For example, the following formula (I) represents that a storage block 1221a stores the compensation parameters of the R component, the G component and the B component:

DBI_SD[35:0]= {DF_R[11:0] , DF_G[11:0] , DF_B[11:0]}…(I)

That is, when the storage space of one storage block 1221a is 36 bits, the storage space allocated to each compensation parameter component is 12 bits, that is, the storage space of the storage block 1221a for storing each compensation parameter component is 4095 memory address.

As shown in Figure 2, Figure 3 and Figure 4, in the case where the calculation depth (Count depth) is 10 bits (referred to as case 1), if the single compensation parameter component (such as R component) obtained by each operation The maximum amount of data is 1023 memory addresses, then the compensation unit 1211a can only perform four compensation operations, and the accumulation unit 1213a can only perform four aging model update operations, thereby limiting the number of times pixel compensation is used . On the other hand, in the case where the calculation depth (Count depth) is 11 bits (referred to as case 2), if the maximum data volume of a single compensation parameter component (such as R component) obtained by each operation is 2047 memory bits address, the compensation unit 1211a can only perform two compensation calculations, and the accumulation unit 1213a can only perform two aging model update calculations, which further limits the number of times pixel compensation can be used.

With the development of smart phones towards full screen and larger panel resolution, the conventional OLED display panel compensation algorithm (DBI algorithm for short) needs to process more data, and the calculation precision must be further improved. improve. However, a higher resolution of the panel means that, in the case of a fixed storage space of the memory 122a, more storage blocks 1221a must be planned to store related compensation parameters of corresponding pixels. At the same time, in order to increase the calculation fineness (for example, increase the count depth from 11bits to 12bits), each storage block 1221a must contain more memory addresses.

It can be seen from the above description that with the increase of the panel resolution, the fineness of the pixel compensation calculation and the memory capacity of each storage block 1221a must be correspondingly increased. However, the total storage space of the memory 122a is fixed. In this case, the following mutually exclusive phenomena will occur:

(1) The higher the resolution of the panel, the more storage blocks 1221a must be planned in the storage space of the memory 122a, resulting in the smaller memory capacity of each storage block 1221a;

(2) The more executable times of pixel compensation, the larger the memory capacity of each storage block 1221a must be;

(3) The larger the calculation depth (Count depth) of the pixel compensation operation is, the larger the amount of data related to the compensation parameters will be finally obtained. Naturally, the memory capacity of each storage block 1221a must be larger.

The finer the data sampling, the larger the count depth, so the larger the block needs to be.

Therefore, in order to solve this problem, the simplest solution is to increase the storage space of the memory 122a; however, this also means that the hardware cost increases accordingly.

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

The main purpose of the present invention is to provide a pixel compensation method of an OLED display panel, which is implemented by a display driver chip. As far as the existing pixel compensation process is concerned, a frame of output display data is obtained after a pixel compensation operation is performed on a frame of input display data, and a plurality of first compensations are obtained after an aging model update operation is completed based on the output display data. parameter. In particular, the pixel compensation method of the present invention further performs a data reconstruction process on the plurality of first compensation parameters, so as to compress each of the first compensation parameters, thereby obtaining a plurality of second compensation parameters. Therefore, the data volume of the second compensation parameter is smaller than the data volume of the first compensation parameter. Finally, the plurality of second compensation parameters are stored in a memory. In this way, even if the fineness of the pixel compensation operation increases with the increase of the panel resolution, the capacity of the original memory is sufficient to store the second compensation parameter with a relatively small amount of data, and there is no need to further increase the memory storage space. At the same time, since the present invention stores in the memory the second compensation parameter with a relatively small amount of data instead of the first compensation parameter with a relatively large amount of data, therefore, when the capacity of the memory is fixed, The execution times of pixel compensation are increased (that is, the number of times of storing compensation parameters is increased).

In order to achieve the above object, the present invention proposes a pixel compensation method for the OLED display panel, which is executed by a display driver chip, and includes the following steps:

Receive a frame of input display data, and perform a pixel compensation operation according to the input display data and a plurality of aging compensation parameters if a pixel compensation operation is required, and then send a frame of output display data;

After the pixel compensation operation is completed, perform an aging model update operation according to the output display data, so as to obtain a plurality of first compensation parameters;

performing a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters, wherein the data size of the first compensation parameters is larger than the data size of the second compensation parameters; and

The plurality of second compensation parameters are stored in a memory as the plurality of aging compensation parameters required when performing the pixel compensation operation.

In a feasible embodiment, the first compensation parameter includes a first R component data, a first G component data and a first B component data, and the second compensation parameter includes a second R component data, a second G component data, a second B component data, and an index data.

As mentioned above, the index data is added to the result of a first multiplication operation of an adjustment constant and the second R component data to obtain the first R component data, and the index data and a first multiplication result of the adjustment constant The first G component data is obtained by adding the result of the double multiplication operation to the second G component data, and the index data is added to the second B component data and the result of a third multiplication operation of the adjustment constant That is, the first B component data is obtained.

In another feasible embodiment, the first compensation parameter includes an R component data, a G component data, and a B component data, and the first compensation parameter includes a first data, a second data, a third data, and an index data.

Continuing from the above, one of the R component data, the G component data and the B component data having the smallest amount of data is used as the first data, and the R component data, the G component data and the B component data The second data and the third data are obtained after the other two which have the minimum amount of data are subtracted from the first data respectively, and the index data is used to record as the first data , the correlation between the second data and the third data and the R component data, the G component data and the B component data.

Moreover, the present invention also provides an OLED display device, which includes at least one display driver chip and an OLED display panel, wherein the display driver chip executes a pixel compensation method of an OLED display panel for a frame of input display data to generate a corresponding frame Outputting display data, thereby performing display driving on the OLED display panel according to the output display data; the pixel compensation method of the OLED display panel includes the following steps:

Receive a frame of input display data, and perform a pixel compensation operation according to the input display data and a plurality of aging compensation parameters if a pixel compensation operation is required, and then send a frame of output display data;

After the pixel compensation operation is completed, perform an aging model update operation according to the output display data, so as to obtain a plurality of first compensation parameters;

performing a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters, wherein the data size of the first compensation parameters is larger than the data size of the second compensation parameters; and

The plurality of second compensation parameters are stored in a memory as the plurality of aging compensation parameters required when performing the pixel compensation operation.

In a feasible embodiment, the first compensation parameter includes a first R component data, a first G component data and a first B component data, and the second compensation parameter includes a second R component data, a second G component data, a second B component data, and an index data.

As mentioned above, the index data is added to the result of a first multiplication operation of an adjustment constant and the second R component data to obtain the first R component data, and the index data and a first multiplication result of the adjustment constant The first G component data is obtained by adding the result of the double multiplication operation to the second G component data, and the index data is added to the second B component data and the result of a third multiplication operation of the adjustment constant That is, the first B component data is obtained.

In another feasible embodiment, the first compensation parameter includes an R component data, a G component data, and a B component data, and the second compensation parameter includes a first data, a second data, a third data, and an index data.

Continuing from the above, one of the R component data, the G component data and the B component data having the smallest amount of data is used as the first data, and the R component data, the G component data and the B component data The second data and the third data are obtained after the other two which have the minimum amount of data are subtracted from the first data respectively, and the index data is used to record as the first data , the correlation between the second data and the third data and the R component data, the G component data and the B component data.

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.

FIG. 5 shows a block diagram of an OLED display device applying a pixel compensation method for an OLED display panel of the present invention. As shown in FIG. 5 , 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 a display driving circuit 12, wherein the display driving circuit 12 includes at least one The display driving chip is used for implementing the pixel compensation method of the OLED display panel of the present invention. Referring to FIG. 6 continuously, it shows a block diagram of a display driving chip included in the display driving circuit of the OLED display device shown in FIG. 5 . As shown in FIG. 6 , the display driver chip 121 basically has a compensation unit 1211 , an arithmetic unit 1212 and an accumulation unit 1213 inside. In particular, in the case of applying the pixel compensation method of the OLED display panel of the invention, A data reconstructing unit 1214 is further provided inside the display driver chip 121 .

FIG. 7 is a flowchart of a pixel compensation method for an OLED display panel according to the present invention. As shown in Figures 6 and 7, the display driver chip 121 executes the pixel compensation method of the OLED display panel of the present invention. The pixel compensation method first executes step S1: receiving a frame of input display data, and performing a pixel compensation if necessary. In the case of compensation operation, a pixel compensation operation is performed according to the input display data and a plurality of aging compensation parameters, and then a frame of output display data is sent out. For example, after an input display data including R/G/B data transmitted by the host processor 10 through the DBI (Display Bus Interface) protocol, the compensation unit 1211 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.

As shown in FIG. 6 and FIG. 7 , the pixel compensation method proceeds to step S2: after the pixel compensation operation is completed, an aging model update operation is performed according to the output display data to obtain a plurality of first compensation parameters. In one embodiment, the accumulating unit 1213 completes an aging model update operation according to the output display data and the mathematical formula A(n)=A(n-1)+S, so as to obtain related compensation parameters (that is, a plurality of the first compensation parameter). Please continue to refer to FIG. 8 , which shows a block diagram of the internal units of the memory 122 shown in FIG. 6 . As shown in FIG. 8 , in order to efficiently compensate each pixel (Pixel), the storage space of the memory 122 will be planned into a plurality of storage blocks 1221, thereby using the corresponding storage blocks 1221 to store Related compensation parameters of the corresponding pixel (Pixel).

In general, the compensation parameters (DF(x,y)) stored in the storage space of one of the storage blocks 1221 include the R component (DF_R(x,y)), the G component (DF_G(x,y) )) and the B component (DF_B(x,y)). For example, as shown in the following table (1), DF(0,0) includes DF_R(0,0), DF_G(0,0) and DF_B(0,0), and DF(1,0) includes DF_R( 1,0), DF_G(1,0), and DF_B(1,0). Table 1) The compensation parameter DF(x,y) corresponding to the pixel (Pixel) weight Data size (number of memory addresses) DF(0,0) DF_R(0,0) 634 DF_G(0,0) 1964 DF_B(0,0) 1558 DF(1,0) DF_R(1,0) 3092 DF_G(1,0) 3388 DF_B(1,0) 1829

However, with the development of smart phones towards full screen and larger panel resolution, the compensation algorithm (DBI algorithm for short) of the OLED display panel 11 needs to process more data, and the calculation precision must be further improved. improve. In this case, the data volume of the plurality of first compensation parameters obtained from the aging model update operation (ie, step S2 ) will correspondingly increase.

Therefore, as shown in FIG. 6 and FIG. 7, the pixel compensation method then executes step S3 and step S4: perform a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters, and convert the plurality of The second compensation parameter is stored in a memory as the plurality of aging compensation parameters required for performing the pixel compensation operation. For example, if the storage space of one storage block 1221 is 36 bits, then the storage space allocated to each compensation parameter component is 12 bits. In this case, when step S3 is executed, the data reconstruction unit 1214 implements the data reconstruction process using the following equations (1)-(4), thereby converting the plurality of first compensation parameters into a plurality of second compensation parameters . DBI_SD[35:0]= {DF'_R[10:0] , DF'_G[10:0] , DF'_B[10:0] , Index[2:0]}………………… …………………………………(1) DF_R=DF’_R[10:0]+Index[2:0]×512………………(2) DF_G=DF’_G[10:0]+Index[2:0]×512………………(3) DF_B=DF’_B[10:0]+Index[2:0]×512…………………(4)

For example, as shown in Table (2) below, DF(x,y) is transformed into DF'(x,y). Table 2) The compensation parameter DF'(x,y) corresponding to the pixel (Pixel) weight Data size (number of memory addresses) DF'(0,0) DF'_R(0,0) 122 DF'_G(0,0) 1452 DF'_B(0,0) 1046 Index(0,0) 1 DF'(1,0) DF'_R(1,0) 1556 DF'_G(1,0) 1852 DF'_B(1,0) 293 Index(1,0) 3

It can be known from the above table (1) that the first compensation parameter (DF(x, y)) package includes a first R component data (DF_R[11:0]), a first G component data (DF_G[11: 0]) and a first B component data (DF_B[11:0]), and from the above table (2), it can be seen that the second compensation parameter (DF'(x,y)) contains a second R component data (DF'_R[10:0]), a second G component data (DF'_G[10:0]), a second B component data (DF'_B[10:0]), and an index data (Index (x,y)).

According to the design of the present invention, as shown in the above formulas (1) ~ (4), the index data and the result of a first multiplication operation of an adjustment constant (for example: 512) and the second R component data are added to obtain the obtained The first R component data, the index data is added to the second multiplication result of the adjustment constant and the second G component data to obtain the first G component data, and the index data and the adjustment The result of a third multiplication of constants is added to the second B-component data to obtain the first B-component data. It should be known that as the resolution of the panel, the count depth, and the memory space of the storage block 1221 of the memory 122 are different, the adjustment constant will also change correspondingly. Even, the size of the second R component data, the second G component data, and the second B component data can also be adjusted.

Moreover, it can be seen from Table (1) and Table (2) that the data volume of the second compensation parameter (ie, the number of occupied memory addresses) is significantly smaller than the data volume of the first compensation parameter. In other words, when the size of the memory space of the storage block 1221 of the memory 122 is fixed, the execution times of the pixel compensation increases (ie, the times of storing the second compensation parameters increase).

In another embodiment, when step S3 is executed, the data reconstruction unit 1214 uses the following formulas (A)-(B) to implement the data reconstruction process, so as to convert the plurality of first compensation parameters into a plurality of second compensation parameters. DBI_SD[35:0]= {DF_min[11:0] , DF_1[10:0] , DF_2[10:0] , Index[1:0]}……………………………… …………………(A) DF_min[11:0]=Min(DF_R[11:0], DF_G[11:0], DF_B[11:0]) ……………………………………………………………..(B) DF_1[11:0]= P－DF_min[11:0]…………………………(C) DF_2[11:0]=Q－DF_min[11:0]…………………………(D)

According to the design of the present invention, as shown in the above formulas (A)~(D), the first compensation parameter system includes an R component data (DF_R[11:0]), a G component data (DF_G[11:0] ) and a B component data (DF_B[11:0]), and the second compensation parameter includes a first data (DF_min[11:0]), a second data (DF_1[11:0]), A third data (DF_1[11:0]), and an index data (Index[1:0]). Wherein, one of the R component data, the G component data and the B component data with the smallest data amount is used as the first data, and the R component data, the G component data and the B component data The second data and the third data are obtained by performing a subtraction operation on the other two data that do not have the minimum amount of data respectively with the first data. And, as shown in the following table (3), the index data is used to record the relationship between the first data, the second data and the third data and the R component data, the G component data and the B component data interrelationships. table 3) Value of Index[1:0] Description 0 DF_min:Red DF_1:Green DF_2:Blue 1 DF_min:Green DF_1:Blue DF_2:Red 2 DF_min:Blue DF_1:Red DF_2:Gree 3 --

For example, as shown in Table (4) below, the plurality of first compensation parameters (DF(x,y)) are transformed into the plurality of second compensation parameters (DF'(x,y)). Table 4) The compensation parameter DF'(x,y) corresponding to the pixel (Pixel) weight Data size (number of memory addresses) DF'(0,0) DF_min(0,0) 634 DF_1(0,0) 1330 DF_2(0,0) 924 Index(0,0) 0 DF'(1,0) DF_min(1,0) 1829 DF_1(1,0) 1263 DF_2(1,0) 1559 Index(1,0) 2

It should be known that the index data (Index[1:0]) will also change accordingly as the resolution of the panel, the count depth and the memory space of the storage block 1221 of the memory 122 are different. Moreover, it can be known from Table (1) and Table (4), that the data volume of the second compensation parameter (that is, the number of occupied memory addresses) is significantly smaller than the data volume of the first compensation parameter. In other words, when the size of the memory space of the storage block 1221 of the memory 122 is fixed, the execution times of the pixel compensation increases (ie, the times of storing the second compensation parameters increase).

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

(1) The present invention discloses a pixel compensation method of an OLED display panel, which is implemented by a display driver chip. As far as the existing pixel compensation process is concerned, a frame of output display data is obtained after a pixel compensation operation is performed on a frame of input display data, and a plurality of first compensations are obtained after an aging model update operation is completed based on the output display data. parameter. In particular, the pixel compensation method of the present invention further performs a data reconstruction process on the plurality of first compensation parameters, so as to compress each of the first compensation parameters, thereby obtaining a plurality of second compensation parameters. Therefore, the data volume of the second compensation parameter is smaller than the data volume of the first compensation parameter. Finally, the plurality of second compensation parameters are stored in a memory. In this way, even if the fineness of the pixel compensation operation increases with the increase of the panel resolution, the capacity of the original memory is sufficient to store the second compensation parameter with a relatively small amount of data, and there is no need to further increase the memory storage space. At the same time, since the present invention stores in the memory the second compensation parameter with a relatively small amount of data instead of the first compensation parameter with a relatively large amount of data, therefore, when the capacity of the memory is fixed, The execution times of pixel compensation are increased (that is, the number of times of storing compensation parameters is increased).

(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 execute the aforementioned pixel 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, the purpose, means and efficacy of this case all show that it is very different from the conventional technology, and its first invention is practical, and indeed meets the patent requirements of the invention. I implore your review committee to be aware and grant a patent as soon as possible to benefit you. Society is for the Most Prayer.

1a: OLED display device 10a: Host Processor 11a: OLED display panel 12a: Display drive circuit 121a: display driver chip 1211a: compensation unit 1212a: arithmetic unit 1213a: accumulation unit 122a: memory 1221a: storage block 1: OLED display device 10: Host Processor 11:OLED display panel 12: Display drive circuit 121: Display driver chip 1211: compensation unit 1212: arithmetic unit 1213: accumulation unit 1214: data reconstruction unit 122: memory 1221: storage block S1: Receive a frame of input display data, and perform a pixel compensation operation based on the input display data and a plurality of aging compensation parameters if a pixel compensation operation is required, and then send a frame of output display data S2: After the pixel compensation operation is completed, perform an aging model update operation according to the output display data, thereby obtaining a plurality of first compensation parameters S3: Perform a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters S4: storing the plurality of second compensation parameters in a memory as the plurality of aging compensation parameters required when performing the pixel compensation operation

1 is a block diagram of a known OLED display device; 2 is a block diagram of a display driver chip included in the display driver circuit of the OLED display device shown in FIG. 1; Fig. 3 is the block diagram of the internal unit of memory shown in Fig. 2; Figure 4 is a block diagram showing a storage block shown in Figure 3; 5 is a block diagram of an OLED display device applying a pixel compensation method of an OLED display panel according to the present invention; 6 is a block diagram of a display driver chip included in the display driver circuit of the OLED display device shown in FIG. 5; 7 is a flow chart of a pixel compensation method for an OLED display panel of the present invention; and FIG. 8 is a block diagram of internal units of the memory shown in FIG. 6 .

S1: Receive a frame of input display data, and perform a pixel compensation operation based on the input display data and a plurality of aging compensation parameters if a pixel compensation operation is required, and then send a frame of output display data

S2: After the pixel compensation operation is completed, perform an aging model update operation according to the output display data, thereby obtaining a plurality of first compensation parameters

S3: Perform a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters

S4: storing the plurality of second compensation parameters in a memory as the plurality of aging compensation parameters required when performing the pixel compensation operation

Claims (8)

A pixel compensation method for an OLED display panel, which is executed by a display driver chip, and includes the following steps: receiving a frame of input display data, and performing a pixel compensation operation based on the input display data and complex numbers Perform a pixel compensation operation for each aging compensation parameter, and then send a frame of output display data; after the pixel compensation operation is completed, perform an aging model update operation according to the output display data, thereby obtaining a plurality of first compensation parameters ; performing a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters, wherein the data volume of the first compensation parameters is greater than the data volume of the second compensation parameters; The second compensation parameter is stored in a memory as a plurality of aging compensation parameters that need to be used when performing the pixel compensation operation; wherein, the first compensation parameter includes a first R component data, a first G component data and a first B component data, and the second compensation parameter includes a second R component data, a second G component data, a second B component data and an index data . The pixel compensation method of an OLED display panel as described in Claim 1, wherein the first R component is obtained by adding the index data to the result of a first multiplication operation of an adjustment constant and the second R component data data, the index data is added to the second multiplication result of the adjustment constant and the second G component data to obtain the first G component data, and the index data and a third of the adjustment constant The result of the multiplication operation is added to the second B component data to obtain the first B component data. A pixel compensation method for an OLED display panel, which is executed by a display driver chip, and includes the following steps: receiving a frame of input display data, and performing a pixel compensation operation based on the input display data and complex numbers A pixel compensation operation is performed based on an aging compensation parameter, and then a frame of output display data is sent out; after the pixel compensation operation is completed, an aging model update operation is performed according to the output display data. to obtain a plurality of first compensation parameters; perform a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters, wherein the data volume of the first compensation parameters is larger than that of the second compensation The data amount of the parameter; and storing the plurality of the second compensation parameters in a memory as the plurality of the aging compensation parameters that need to be used when performing the pixel compensation operation; wherein, the The first compensation parameter includes an R component data, a G component data, and a B component data, and the second compensation parameter includes a first data, a second data, a third data, and an index data. The pixel compensation method for an OLED display panel as described in Claim 3, wherein one of the R component data, the G component data, and the B component data having the smallest amount of data is used as the first data, and the The other two of the R component data, the G component data and the B component data that do not have the minimum amount of data are respectively subjected to a subtraction operation with the first data to obtain the second data and the third data, And the index data is used to record the correlation between the first data, the second data and the third data and the R component data, the G component data and the B component data. An OLED display device, which includes at least one display driver chip and an OLED display panel, wherein the display driver chip executes a pixel compensation method of an OLED display panel for a frame of input display data to generate a frame of output display data correspondingly, thereby according to The output display data drives the OLED display panel; the pixel compensation method of the OLED display panel includes the following steps: receiving a frame of input display data, and performing a pixel compensation operation according to the input Perform a pixel compensation operation on the display data and a plurality of aging compensation parameters, and then send out a frame of output display data; after the pixel compensation operation is completed, perform an aging model update operation based on the output display data, thereby obtaining a plurality of first compensation parameters; performing a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters, wherein the data size of the first compensation parameters is larger than the data size of the second compensation parameters; and storing the plurality of second compensation parameters in a memory as the plurality of aging compensation parameters required when performing the pixel compensation operation; wherein the first compensation parameters include A first R component data, a first G component data, and a first B component data, and the second compensation parameter system includes: a second R component data, wherein, an index data and an adjustment constant of a first The result of a multiplication operation and the second R component data are added to obtain the first R component data; a second G component data, wherein the index data and the result of a second multiplication operation of the adjustment constant and The second G-component data is added to obtain the first G-component data; and a second B-component data and the index data, wherein the index data and the result of a third multiplication operation of the adjustment constant and the The second B component data is added to obtain the first B component data. An OLED display device, which includes at least one display driver chip and an OLED display panel, wherein the display driver chip executes a pixel compensation method of an OLED display panel for a frame of input display data to generate a frame of output display data correspondingly, thereby according to The output display data drives the OLED display panel; the pixel compensation method of the OLED display panel includes the following steps: receiving a frame of input display data, and performing a pixel compensation operation according to the input Perform a pixel compensation operation on the display data and a plurality of aging compensation parameters, and then send out a frame of output display data; after the pixel compensation operation is completed, perform an aging model update operation based on the output display data, thereby obtaining a plurality of first compensation parameters; performing a data reconstruction process on the plurality of first compensation parameters to obtain a plurality of second compensation parameters, wherein the data size of the first compensation parameters is larger than the data size of the second compensation parameters; and storing the plurality of second compensation parameters in a memory as the plurality of aging compensation parameters required when performing the pixel compensation operation; wherein the first compensation parameters include An R component data, a G component data, and a B component data, and the second compensation parameter includes a first data, a second data, a third data, and an index data. The OLED display device as described in Claim 6, wherein, one of the R component data, the G component data, and the B component data having the smallest amount of data is used as the first data, and the R component data, the B component data The second data and the third data are obtained after the G component data and the other two of the B component data that do not have the minimum data amount are respectively subtracted from the first data, and the index data is used A record is used as a correlation between the first data, the second data and the third data and the R component data, the G component data and the B component data. An information processing device having the OLED display device described in any one of claim 5 to claim 7.

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