TWI817668B - Edge jagged display compensation method, driver chip and OLED display device of OLED display - Google Patents

Abstract

An edge jagged display compensation method for an OLED display is implemented by a control circuit, which includes: in a frame of display data, dividing a frame of display data into a main display area and at least one arc edge of a display screen. A completely black edge area, wherein the main display area is provided with a corresponding arc-shaped boundary display area adjacent to the at least one arc edge; and the grayscale of the display data in the at least one edge completely black area is The values are all 0, and the grayscale values of the display data in the arc-shaped boundary display area of each segment are all a decreasing distribution, and the direction of each decreasing distribution is determined by the arc-shaped boundary display area of each segment. The area adjacent to the main display area points to an area far away from the main display area.

Description

Edge jagged display compensation method, driver chip and OLED display device of OLED display

The present invention relates to OLED displays, and in particular, to a solution that can minimize the jagged edge phenomenon of a display screen of an OLED display.

OLED (organic light-emitting diode) display devices have the characteristics of self-illumination, wide viewing angle, fast response, high luminous efficiency, little influence on luminous performance by temperature, and flexible display. Therefore, it has been widely used in mobile phones and smart wearables. and other small size display areas. The displays of smart wearable OLED display modules are mostly square and rounded screens or circular screens. OLED display screens are composed of pixels. Smart wearable OLED displays generally have a real (real) RGB pixel arrangement, that is, each white point pixel is composed of three sub-pixels: R, G, and B. Please refer to Figure 1, which is a schematic diagram of the pixel arrangement at the edge of a conventional display screen. As shown in Figure 1, since the pixels are arranged row by row and column by column during the production of the display screen, the pixels on the arc edge 10 of a display screen are staggered, causing the macroscopic visual effect of the arc edge 10 to appear jagged edges. status. In addition, generally speaking, each display manufacturer has its own unique design for the shape and arrangement of sub-pixels on the display. Even displays of the same size, if they come from different manufacturers' production lines, will have different degrees of jaggedness at the edges of the display. It will also be different.

The traditional edge aliasing compensation algorithm uses the center of the display screen as the center of the circle, the radius of the display screen as the radius of the circle, draws a complete circle, and then lowers the brightness of the pixels around the circle to weaken the aliasing display. This method is only suitable for circular screens and has poor improvement effect. In addition to basic circular screens, the market demand for smart wearable displays also includes diversified designs such as square and rounded screens, water drop screens, bangs screens, top and bottom asymmetric special-shaped screens, and circular screens with small holes in the center.

In order to solve the above problems, a novel edge jagged display compensation method for OLED displays is urgently needed in this field.

One purpose of the present invention is to disclose an edge jagged display compensation method for an OLED display, which can divide a frame of display data into a main display area and at least one edge black area according to the shape of a display screen, and in the main display area At least one grayscale gradient area is arranged adjacent to the at least one edge full black area, thereby minimizing the jagged display phenomenon at the edge of the display screen.

Another object of the present invention is to disclose a driving chip that can minimize the jagged display phenomenon at the edge of the display screen of an OLED display through the aforementioned method.

Another object of the present invention is to disclose an OLED display device that can minimize the jagged display phenomenon at the edge of a display screen by using the aforementioned driving chip.

In order to achieve the aforementioned purpose, a method for compensating edge jagged display of OLED displays is proposed, which is implemented by a control circuit and includes: In a frame of display data, a frame of display data is divided into a main display area and at least one edge completely black area according to at least one arc edge of a display screen, wherein the main display area is adjacent to the at least one arc edge. An arc-shaped boundary display area is set correspondingly at each location; and Make the gray scale value of the display data in the at least one edge completely black area be 0, and The gray scale values of the display data in the arc-shaped boundary display area of each segment are all in a decreasing distribution, and the direction of each decreasing distribution is from the arc-shaped boundary display area of each segment adjacent to the main display area. The area points away from the main display area.

In one embodiment, the edge jagged display compensation method of the OLED display further includes: correspondingly setting a circular full black area in the frame of display data according to a central perforation of the display screen, and making the circle completely black. The grayscale values of the displayed data in the area are all 0.

In one embodiment, the edge jagged display compensation method of the OLED display further includes: setting up an annular display area immediately outside the circular full black area, and making the display in the annular display area The grayscale values of the data are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area.

In one embodiment, the edge jagged display compensation method of the OLED display further includes: correspondingly setting a half-elliptical full black area in the frame display data according to a semi-elliptical groove of the display screen, and making the half-elliptical full black area. The grayscale values of the displayed data in the black area are all 0.

In one embodiment, the edge jagged display compensation method of the OLED display further includes: setting up a half-ring display area immediately outside the semi-elliptical black area, and making the display data in the half-ring display area The gray scale values are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the semi-elliptical black area in the semi-circular display area to the area away from the semi-elliptical black area.

In order to achieve the aforementioned object, the present invention further proposes a driver chip, which has a control unit to execute an edge jagged display compensation program on a frame of display data stored in a memory. The program includes: The frame of display data is divided into a main display area and at least one edge completely black area according to at least one arc edge of a display screen, wherein the main display area is provided with a corresponding arc adjacent to the at least one arc edge. border display area; and Make the gray scale value of the display data in the at least one edge completely black area be 0, and The gray scale values of the display data in the arc-shaped boundary display area of each segment are all in a decreasing distribution, and the direction of each decreasing distribution is from the arc-shaped boundary display area of each segment adjacent to the main display area. The area points away from the main display area.

In one embodiment, the edge jagged display compensation process further includes: correspondingly setting a circular full black area in the frame of display data according to a central perforation of the display screen, and making the said circular full black area The grayscale values of the displayed data are all 0.

In one embodiment, the edge jagged display compensation process further includes: setting up an annular display area immediately outside the circular full black area, and adjusting the grayscale value of the display data in the annular display area. Both are an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area.

In one embodiment, the edge jagged display compensation process further includes: correspondingly setting a half-elliptical black area in the frame display data according to a semi-elliptical groove of the display screen, and making all the areas in the semi-elliptical black area The grayscale values of the above displayed data are all 0.

In one embodiment, the edge jagged display compensation process further includes: setting up a half-ring display area immediately outside the semi-elliptical black area, and making the grayscale values of the display data in the half-ring display area uniform. It is an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the semi-elliptical black area in the semi-circle display area to the area away from the semi-elliptical black area.

In order to achieve the above object, the present invention further proposes an OLED display device, which has an OLED display screen and a driving chip for driving the OLED display screen. The driving chip has a control unit to control a data stored in a memory. The frame display data performs an edge aliasing display compensation process, which includes: The frame display data is divided into a main display area and at least one edge completely black area according to at least one arc edge of the OLED display screen, wherein the main display area is provided with a corresponding arc adjacent to the at least one arc edge. rectangular boundary display area; and Make the gray scale value of the display data in the at least one edge completely black area be 0, and The gray scale values of the display data in the arc-shaped boundary display area of each segment are all in a decreasing distribution, and the direction of each decreasing distribution is from the arc-shaped boundary display area of each segment adjacent to the main display area. The area points away from the main display area.

In one embodiment, the edge jagged display compensation process further includes: correspondingly setting a circular full black area in the frame display data according to a center hole of the OLED display screen, and making all the areas in the circular full black area The grayscale values of the above displayed data are all 0.

In one embodiment, the edge jagged display compensation process further includes: setting up an annular display area immediately outside the circular full black area, and adjusting the grayscale value of the display data in the annular display area. Both are an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area.

In one embodiment, the edge jagged display compensation process further includes: correspondingly setting a semi-elliptical black area in the frame display data according to a semi-elliptical groove of the OLED display screen, and making the semi-elliptical black area within the The grayscale values of the displayed data are all 0.

In one embodiment, the edge jagged display compensation process further includes: setting up a half-ring display area immediately outside the semi-elliptical black area, and making the grayscale values of the display data in the half-ring display area uniform. It is an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the semi-elliptical black area in the semi-circle display area to the area away from the semi-elliptical black area.

In order to enable the review committee to further understand the structure, characteristics and purpose of the present invention, drawings and detailed descriptions of preferred embodiments are attached as follows.

Please refer to FIG. 2 , which illustrates a block diagram of an embodiment of the driver chip of the present invention. As shown in Figure 2, a driving chip 100 has a control unit 110, a memory 120 and a driving unit 130. The memory 120 is used to store a frame of display data D _DIS and the driving unit 130 is used to drive a frame of display data D DIS . OLED panel 140, and the control unit 110 is used to execute an edge jagged display compensation program, which includes: (1) Divide the frame display data D _DIS into a main frame according to at least one arc edge of a display screen of the OLED panel 140. display area and at least one edge completely black area, wherein the main display area is provided with a corresponding arc-shaped boundary display area adjacent to the at least one arc edge; and (2) making the at least one edge completely black area The gray scale value of the display data D _DIS is all 0, and the gray scale value of the display data D _DIS in the arc-shaped boundary display area of each segment is a decreasing distribution, and the direction of each decreasing distribution is determined by each The area adjacent to the main display area in the arc-shaped boundary display area points to an area away from the main display area.

In addition, the edge jagged display compensation process may further include: correspondingly setting a circular full black area in the frame display data D _DIS according to a center hole of the display screen of the OLED panel 140, and making the circular full black area The gray scale values of the displayed data D _DIS are all 0.

In addition, the edge jagged display compensation procedure may further include: setting up an annular display area immediately outside the circular black area, and making the grayscale values of the display data D _DIS in the annular display area equal to one. Increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area.

In addition, the edge jagged display compensation program may further include: according to a semi-elliptical groove of the display screen of the OLED panel 140, correspondingly set a half-elliptical full black area in the frame display data D _DIS , and make the semi-elliptical full black area The grayscale values of the displayed data D _DIS are all 0.

In addition, the edge jagged display compensation program may further include: setting up a half-ring display area immediately outside the semi-elliptical black area, and making the grayscale values of the display data D _DIS in the half-ring display area be an increment. distribution, and the direction of the increasing distribution is from the area adjacent to the semi-elliptical black area in the semi-circular display area to the area away from the semi-elliptical black area.

In detail, the edge jagged display compensation program of the present invention can be used for circular displays, elliptical displays, displays with R-angles, displays with grooves, and displays with any combination of the aforementioned graphics.

Please refer to FIG. 3 , which is a schematic diagram of the present invention applied to a circular display screen. As shown in Figure 3, the present invention sets a virtual circle 21 in a circular display screen 20. The radius of the virtual circle 21 is (Rx, Ry), and the center position of the circle is (Ox, Oy), thereby generating four segments. For the arc-shaped border display area, the width of each segment of the arc-shaped border display area is W. Taking W=2 as an example, it means that the width is 2 pixels. In addition, preferably, in each arc-shaped boundary display area, the setting method of the decreasing distribution can be: setting the gray scale value of the pixels closer to the center position (Ox, Oy) to 60%~80% of the pixels in the display area. %, and the grayscale value of pixels far away from the center of the circle (Ox, Oy) is 20%~40% of the pixels in the display area. In addition, the present invention can adjust the setting method of the decreasing distribution according to the actual display effect of the circular display screen 20 to minimize the boundary jagged phenomenon of the circular display screen 20 . In this manner, the present invention can also be applied to an elliptical display with Rx > Ry or Rx < Ry.

In addition, one of the expansion needs of circular displays is to combine traditional dial pointers with smart wearable displays, which dig holes in the center of the circular display and reserve the position of physical pointers on the entire structure. In this application scenario, the present invention sets a second circle in the center of the circular display screen, sets a circular full black area corresponding to the second circle in one frame of display data, and makes the circle completely black. The gray scale value of the displayed data in the black area is 0. In addition, the present invention can also set up an annular display area immediately outside the circular black area, so that the grayscale values of the display data in the annular display area are all in an increasing distribution, and the increasing distribution The direction is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area.

The second expansion demand for circular displays is the application of water drop screens, which involves digging holes above the circular display to reserve a camera position. By configuring the center and radius of the second circle, make the second circle coincide with the camera position. In this application scenario, the present invention will set a circular full black area corresponding to the second circle in one frame of display data, and make the grayscale values of the display data in the circular full black area equal to 0. In addition, the present invention can also set up an annular display area immediately outside the circular black area, so that the grayscale values of the display data in the annular display area are all in an increasing distribution, and the increasing distribution The direction is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area.

In addition, for a square rounded corner display, the pixels on the straight sides are arranged evenly, but because the pixels at the four R corners are staggered, the edges at the four R corners will be very jagged. Obvious. Please refer to FIG. 4 , which is a schematic diagram of the present invention applied to a square rounded corner display screen. As shown in Figure 4, a square rounded corner display screen 30 has four arc edges 31 and four straight sides 32. Accordingly, the present invention divides a frame of display data into a main display area and four The edge is completely black, and the grayscale value of the displayed data in the four edge areas is all 0. In addition, the present invention can also provide an arc-shaped boundary display area corresponding to each of the four arc-shaped edges 31 in the main display area, and make the grayscale values of the displayed data in each arc-shaped boundary display area uniform. It is a decreasing distribution, wherein the direction of each decreasing distribution is from the area adjacent to the main display area in each segment of the arc-shaped boundary display area to the area away from the main display area. In addition, for display screen applications, the displayable area should be as large as possible, and the arc-shaped boundary display area of each segment should be as small as possible. Therefore, preferably, the width of the arc-shaped boundary display area of each segment is two pixels.

In addition, in the application scenario of FIG. 4 , the straight edge 32 of the square and rounded display screen still retains the original full-pixel display mode to minimize the impact on the actual display pixel area.

In addition, the expansion demand for square and rounded display screens is the application of "bang screen", that is, adding cameras, sensors and other devices at the upper and middle positions of the front of the display screen. Please refer to FIG. 5 , which is a schematic diagram of the present invention applied to a square and rounded corner display screen with a bang structure. As shown in FIG. 5 , a square rounded corner display 40 has four arc edges 41 , four straight sides 42 and a bang structure 43 located on the straight sides 42 . Accordingly, the present invention divides a frame of display data into a main display area, four edge all-black areas, and a half-elliptical all-black area. The half-elliptical all-black area is based on the bang structure of the square and rounded corner display screen 40 It is determined by a semi-elliptical groove in 43; and the gray scale value of the four edge all-black areas and the display data in the semi-elliptical all-black area will be 0. In addition, the present invention can further set up a half-ring display area immediately outside the semi-elliptical black area, so that the grayscale values of the displayed data in the half-ring display area are all in an increasing distribution, and the direction of the increasing distribution The direction is from the area adjacent to the semi-elliptical black area in the semi-ring display area to the area away from the semi-elliptical black area.

According to the above description, the present invention discloses an edge jagged display compensation method for an OLED display. Please refer to FIG. 6 , which illustrates a flow chart of an embodiment of an edge jagged display compensation method for an OLED display of the present invention, which is implemented by a control circuit. As shown in Figure 6, the method includes: in a frame of display data, dividing a frame of display data into a main display area and at least one edge black area according to at least one arc edge of a display screen, wherein the main display area Each area is provided with an arc-shaped boundary display area adjacent to the at least one arc edge (step a); and the gray scale value of the display data in the at least one edge completely black area is 0, and The gray scale values of the display data in the arc-shaped boundary display area of each segment are all in a decreasing distribution, and the direction of each decreasing distribution is from the arc-shaped boundary display area of each segment adjacent to the main display area. The area points to the area away from the main display area (step b).

In addition, the edge jagged display compensation method of the OLED display may further include: correspondingly setting a circular full black area in the frame display data according to a central hole of the display screen, and making the circular full black area The grayscale values of the displayed data are all 0.

In addition, the edge jagged display compensation method of the OLED display may further include: setting up an annular display area immediately outside the circular full black area, and making the gray of the display data in the annular display area The step values are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area.

In addition, the edge jagged display compensation method of the OLED display may further include: according to a semi-elliptical groove of the display screen, a half-elliptical full black area is correspondingly set in the frame display data, and the semi-elliptical full black area is The grayscale values of the displayed data are all 0.

In addition, the edge jagged display compensation method of the OLED display may further include: setting up a half-ring display area immediately outside the semi-elliptical black area, and adjusting the grayscale of the display data in the half-ring display area. The values are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the semi-elliptical black area in the semi-circular display area to the area away from the semi-elliptical black area.

In addition, the present invention further proposes an OLED display device. Please refer to FIG. 7 , which illustrates a block diagram of an embodiment of the OLED display device of the present invention. As shown in FIG. 7 , an OLED display device 200 has an OLED display screen 210 and a driving chip 220 for driving the OLED display screen 210 , wherein the driving chip 220 is implemented by the driving chip 100 .

Through the design disclosed above, the present invention has the following advantages: 1. The edge jagged display compensation method of the OLED display of the present invention can divide a frame of display data into a main display area and at least one edge black area according to the shape of a display screen, and set at least one grayscale in the main display area The gradient area is adjacent to the at least one edge full black area, thereby minimizing the jagged display phenomenon at the edge of the display screen. 2. The driver chip of the present invention can minimize the jagged display phenomenon at the edge of the display screen of an OLED display through the aforementioned method. 3. The OLED display device of the present invention can use the aforementioned driving chip to minimize the jagged display phenomenon at the edge of a display screen.

What is disclosed in this case is a preferred embodiment. Any partial changes or modifications derived from the technical ideas of this case and easily inferred by those familiar with the art will not deviate from the scope of the patent rights of this case.

To sum up, regardless of the purpose, means and effects of this case, it shows that it is completely different from the conventional technology, and that the invention is practical first, and indeed meets the patent requirements for inventions. I sincerely ask the review committee to take a clear look and grant the patent as soon as possible for your benefit. Society is a prayer for the Supreme Being.

10: Arc edge 20: Circular display screen 21:Virtual circle 30: Square rounded corner display 31: Arc edge 32:Straight edge 40: Square rounded corner display screen 41:Arc edge 42:Straight edge 43: bangs structure 100: Driver chip 110:Control unit 120:Memory 130: Drive unit 140:OLED panel 200:OLED display device 210:OLED display 220: Driver chip Step a: In a frame of display data, divide a frame of display data into a main display area and at least one edge completely black area according to at least one arc edge of a display screen, wherein the main display area is adjacent to the at least one segment. Each arc edge is provided with a corresponding arc boundary display area. Step b: Make the grayscale value of the display data in the all-black area of the at least one edge be 0, and make the grayscale value of the display data in the arc-shaped boundary display area of each segment be one. Decreasing distribution, and the direction of each decreasing distribution is from the area adjacent to the main display area in each segment of the arc-shaped boundary display area to the area away from the main display area.

Figure 1 is a schematic diagram of the pixel arrangement at the edge of a conventional display screen. FIG. 2 is a block diagram of an embodiment of the driver chip of the present invention. Figure 3 is a schematic diagram of the present invention applied to a circular display screen. Figure 4 is a schematic diagram of the present invention applied to a square rounded corner display screen. FIG. 5 is a schematic diagram of the present invention applied to a square and rounded corner display screen with a bang structure. FIG. 6 is a flow chart illustrating an embodiment of an edge jagged display compensation method for an OLED display according to the present invention. FIG. 7 is a block diagram of an embodiment of the OLED display device of the present invention.

Step a: In a frame of display data, divide a frame of display data into a main display area and at least one edge completely black area according to at least one arc edge of a display screen, wherein the main display area is adjacent to the at least one segment. Each arc edge is provided with a corresponding arc boundary display area.

Step b: Make the grayscale value of the display data in the completely black area of the at least one edge be 0, and make the grayscale value of the display data in the arc-shaped boundary display area of each segment be one. Decreasing distribution, and the direction of each decreasing distribution is from the area adjacent to the main display area in the arc-shaped boundary display area of each segment to the area away from the main display area

Claims (12)

An edge jagged display compensation method for an OLED display is implemented by a control circuit, which includes: in a frame of display data, dividing a frame of display data into a main display area and at least one arc edge of a display screen. A completely black area at the edge, wherein the main display area is provided with a corresponding arc-shaped boundary display area adjacent to the at least one arc edge; a circular circle is provided in the frame of display data according to a central perforation of the display screen A completely black area, and the grayscale value of the display data in the circular completely black area is all 0; and the grayscale value of the display data in the at least one edge completely black area is all 0, And the gray scale value of the display data in the arc-shaped boundary display area of each segment is a decreasing distribution, and the direction of each decreasing distribution is from the arc-shaped boundary display area of each segment adjacent to the main display The areas of the area point away from the main display area. The edge jagged display compensation method of an OLED display as described in claim 1 further includes: setting up an annular display area immediately outside the circular full black area, and making the display in the annular display area The grayscale values of the data are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area. The edge jagged display compensation method of an OLED display as described in item 1 of the patent application further includes: correspondingly setting a half-elliptical full black area in the display data of the frame according to a semi-elliptical groove of the display screen, and making the The grayscale value of the displayed data in the semi-elliptical black area is all 0. The edge jagged display compensation method of an OLED display as described in item 3 of the patent application further includes: setting up a half-ring display area immediately outside the semi-elliptical full black area, and making all the areas in the half-ring display area The gray scale values of the above display data are all in an increasing distribution, and the increasing distribution The direction is from the area adjacent to the semi-elliptical black area in the semi-ring display area to the area away from the semi-elliptical black area. A driving chip has a control unit to perform an edge jagged display compensation program on a frame of display data stored in a memory. The program includes: dividing the frame of display data into segments according to at least one arc edge of a display screen. A main display area and at least one edge black area, wherein the main display area is provided with a corresponding arc-shaped boundary display area adjacent to the at least one arc edge; the frame is displayed according to a central perforation of the display screen Correspondingly set up a circular full black area in the data, and make the gray scale value of the display data in the circular full black area be 0; and make the gray scale value of the display data in the at least one edge full black area The gray scale values are all 0, and the gray scale values of the display data in the arc-shaped boundary display area of each segment are all a decreasing distribution, and the direction of each decreasing distribution is determined by the arc-shaped boundary of each segment. An area of the display area adjacent to the main display area points to an area away from the main display area. The driving chip according to claim 5, wherein the edge jagged display compensation procedure further includes: setting up an annular display area immediately outside the circular full black area, and making the annular display area The gray scale values of the displayed data are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area. For the driver chip described in Item 5 of the patent application, the edge jagged display compensation process further includes: correspondingly setting a half-elliptical full black area in the frame display data according to a semi-elliptical groove of the display screen, and making the The grayscale values of the displayed data in the semi-elliptical black area are all 0. As for the driver chip described in item 7 of the patent application, the edge jagged display compensation procedure further includes: setting up a half ring display area immediately outside the semi-elliptical full black area, and The grayscale values of the display data in the semi-circular display area are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the semi-elliptical black area in the semi-circular display area to away from the semi-elliptical circle. A completely black area. An OLED display device, which has an OLED display screen and a driver chip used to drive the OLED display screen. The driver chip has a control unit to perform edge jagged display compensation on a frame of display data stored in a memory. Procedure, the procedure includes: dividing the frame display data into a main display area and at least one edge completely black area according to at least one arc edge of the OLED display screen, wherein the main display area is adjacent to the at least one arc edge A corresponding arc-shaped boundary display area is set at each location; a circular full black area is set correspondingly in the display data of the frame according to a central perforation of the OLED display screen, and the display data in the circular full black area is The gray scale values are all 0; and the gray scale values of the display data in the at least one edge completely black area are all 0, and the gray scale values of the display data in the arc-shaped boundary display area of each segment are The step values are all in a decreasing distribution, and the direction of each decreasing distribution is from the area adjacent to the main display area in each segment of the arc-shaped boundary display area to the area away from the main display area. The OLED display device according to claim 9, wherein the edge jagged display compensation procedure further includes: setting up an annular display area immediately outside the circular full black area, and making all the areas in the annular display area The gray scale values of the display data are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the circular full black area in the annular display area to the area away from the circular full black area. The OLED display device as described in Item 9 of the patent application, wherein the edge jagged display compensation process further includes: displaying in the frame according to a semi-elliptical groove of the OLED display screen A half-elliptical black area is correspondingly set in the data, and the grayscale values of the displayed data in the half-elliptical black area are all 0. The OLED display device as described in item 11 of the patent application, wherein the edge jagged display compensation procedure further includes: setting up a half-ring display area immediately outside the semi-elliptical full black area, and making the half-ring display area The gray scale values of the display data are all in an increasing distribution, and the direction of the increasing distribution is from the area adjacent to the semi-elliptical black area in the semi-circular display area to the area away from the semi-elliptical black area.