Driving method of display panel, display panel and display device

Abstract

The application discloses a display panel driving method, a display panel and a display device, and belongs to the technical field of display. The display panel comprises a display area, the display area has a notch area, and a data driving processing unit. The driving method comprises the following steps: obtaining a to-be-processed image; dividing the to-be-processed image into a normal display image area and a notch image area; converting the to-be-processed image into a plurality of virtual pixels and obtaining data voltages corresponding to each virtual pixel, the virtual pixels in the normal display image area and the pixels in the display area are in one-to-one correspondence; in a display stage, the data driving processing unit provides the data voltages corresponding to the virtual pixels in the notch image area to at least part of the notch area, or the data driving processing unit provides a 255 gray scale voltage to at least part of the notch area. Compared with the prior art, the dark line phenomenon and the bright line phenomenon can be improved, and the display quality is improved.

Description

Technical Field

[0001] This invention relates to the field of display technology, and more specifically, to a driving method for a display panel, a display panel, and a display device. Background Technology

[0002] Of all the human sensory organs, the visual organ (eyes) receives the most information. In production and daily life, people increasingly need to utilize rich visual information, thus display technology plays a very important role in modern human society. Since its inception, display technology has developed rapidly, with the emergence of cathode ray tube displays (CRT), plasma display panels (PDP), liquid crystal displays (LCD), and the latest organic light-emitting diode (OLED) and micro LED displays.

[0003] With social development and the continuous improvement of people's material needs, traditional rectangular display panels can no longer meet the diverse needs of users. Therefore, irregularly shaped display panels are favored by users.

[0004] Please refer to Figure 1 , Figure 1 In the irregularly shaped display panel shown, the display area 01 is not a traditional rectangle, but rather a shape with a notch 02. Furthermore, the display panel shown in the prior art uses organic light-emitting diode (OLED) display technology. When displaying images, a dark line AL appears below the notch 02. This dark line AL affects the display quality of the panel and reduces the user experience.

[0005] Please continue to refer to this. Figure 1 Researchers discovered that in existing irregularly shaped display panels, edge algorithms are typically enabled in the notch area to improve display quality. When the edge algorithm is enabled, the IC inputs a high voltage to the notch 02 via the data line. After the signal is written to the notch 02, the voltage on the data line drops sharply when the signal is written into the display area, resulting in a voltage jump. Since the PVDD signal line and data line overlap in the display panel, this voltage jump on the data line affects the voltage of the PVDD signal line. When the voltage on the data line drops sharply, the voltage of the PVDD signal line is pulled down. Because the voltage of the PVDD signal line affects the brightness of the organic light-emitting diode (OLED) in an organic light-emitting display panel, the lower voltage of the PVDD signal line leads to a decrease in the brightness of the OLED, resulting in a dark line AL. Similarly, after the signal is written to the display area, the voltage on the data line rises sharply when the signal is written into the notch 02, resulting in a voltage jump and pulling up the voltage of the PVDD signal line. This increased voltage of the PVDD signal line leads to an increase in the brightness of the OLED, resulting in a bright line LL. Summary of the Invention

[0006] In view of this, the present invention provides a driving method for a display panel, a display panel, and a display device.

[0007] This invention provides a driving method for a display panel, the display panel including: a display area having a notch area; and a data driving processing unit;

[0008] The driving method includes: acquiring an image to be processed; dividing the image to be processed into a normal display image area and a notched image area; the normal display image area and the display area correspond to each other, and the notched image area and the notched area correspond to each other; converting the image to be processed into multiple virtual pixels and acquiring the data voltage corresponding to each virtual pixel, with the virtual pixels in the normal display image area and the pixels in the display area corresponding one-to-one; during the display stage, the data driving processing unit provides the data voltage corresponding to the virtual pixels in the notched image area to at least a portion of the notched area, or the data driving processing unit provides a 255 grayscale voltage to at least a portion of the notched area.

[0009] This invention provides a display panel, which is driven by the driving method provided by this invention.

[0010] This invention provides a display device, including a display panel according to an embodiment of the invention.

[0011] Compared with the prior art, the display panel driving method, display panel, and display device provided by the present invention achieve at least the following beneficial effects:

[0012] Assuming the display panel is non-irregularly shaped and the image in the notched image area can be "displayed" within the notched area, the data driving processing unit still provides data voltages to the virtual pixels in the notched image area. Since the notched area still "displays" the image in the notched image area, there are no voltage jumps on the data lines compared to existing technologies, thus resolving bright and dark line phenomena and improving display quality. Alternatively, when the image to be processed is a high grayscale image, assuming the display panel is non-irregularly shaped and a white image is "displayed" within the notched area, the data driving processing unit provides a 255 grayscale voltage to the notched area. Compared to existing technologies, there are no significant voltage jumps on the data lines, thus resolving dark line phenomena and improving display quality.

[0013] Of course, any product implementing this invention does not necessarily need to achieve all of the technical effects described above at the same time.

[0014] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the invention and, together with their description, serve to explain the principles of the invention.

[0016] Figure 1 This is a schematic diagram of the planar structure of an irregularly shaped display panel as described in the prior art;

[0017] Figure 2 This is a flowchart of a driving method for a display panel provided in an embodiment of the present invention;

[0018] Figure 3 yes Figure 2 The driving method shown is a schematic diagram of a planar structure of a display panel.

[0019] Figure 4 yes Figure 2 A schematic diagram of the planar structure of the image to be processed corresponding to the driving method shown;

[0020] Figure 5 yes Figure 2 A schematic diagram of another planar structure of a display panel corresponding to the driving method shown;

[0021] Figure 6 yes Figure 2 The driving method shown is a schematic diagram of another type of display panel planar structure;

[0022] Figure 7 This is a schematic diagram of a planar structure of a display panel corresponding to another display panel driving method provided in an embodiment of the present invention;

[0023] Figure 8 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in an embodiment of the present invention;

[0024] Figure 9 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in the embodiments of the present invention;

[0025] Figure 10 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in the embodiments of the present invention;

[0026] Figure 11 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in the embodiments of the present invention;

[0027] Figure 12 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in the embodiments of the present invention;

[0028] Figure 13 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Detailed Implementation

[0029] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention.

[0030] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0031] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0032] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0034] Please refer to Figure 2 and Figure 3 , Figure 2 This is a flowchart of a display panel driving method provided in an embodiment of the present invention. Figure 3 yes Figure 2 The diagram illustrates a planar structure of a display panel corresponding to the driving method shown. This embodiment of the invention provides a driving method for a display panel.

[0035] The display panel includes: a display area AA, the display area AA having a notch area AS; and

[0036] Data-driven processing unit 10;

[0037] The driving methods include:

[0038] Step S1: Obtain the image to be processed 20;

[0039] Step S2: Divide the image to be processed 20 into a normal display image area XA and a notched image area YA; the normal display image area XA corresponds to the display area AA, and the notched image area YA corresponds to the notched area AS;

[0040] Step S3: Convert the image to be processed 20 into multiple virtual pixels XP and obtain the data voltage corresponding to each virtual pixel XP. The virtual pixels XP in the normal display image area XA and the pixels P in the display area AA correspond one-to-one.

[0041] Step S4: During the display stage, the data driving processing unit 10 provides the data voltage corresponding to the virtual pixel XP in the notch image area YA to at least a portion of the notch area AS, or the data driving processing unit 10 provides a 255 grayscale voltage to at least a portion of the notch area AS.

[0042] In this embodiment, the display panel is an irregularly shaped display panel, and the display area AA has a notch area AS. Figure 2 The diagram illustrates only one shape of the notch area AS, and the notch area AS is located on the side of the display area AA away from the data driving processing unit 10. It should be noted that the shape and size of the notch area AS can be set in various ways, and the relative positional relationship between the notch area AS and the display area AA can also be varied. This embodiment does not impose specific limitations on these aspects.

[0043] The data-driven processing unit 10 can provide data voltage to pixel P.

[0044] Since the display panel provided in this embodiment is an irregularly shaped display panel, while the image to be displayed is usually rectangular, special processing of the image is required when displaying the image.

[0045] Specifically, in step S1, an image 20 to be processed is obtained. The image 20 to be processed is typically rectangular.

[0046] In step S2, based on the shape of the irregularly shaped display panel, the image 20 to be processed is divided into a normal display image area XA and a notched image area YA. During the display phase, the display area AA displays the image from the normal display image area XA. Due to the presence of the notched area AS, the image in the notched image area YA cannot be displayed.

[0047] In step S3, the image to be processed 20 is converted into multiple virtual pixels XP. The virtual pixels in the normal display image area XA are virtual pixels XPX, and the virtual pixels in the notched image area YA are virtual pixels XPY. It should be noted that, according to the working principle of the display panel, the display area AA includes multiple pixels P. Multiple pixels P can display different colors and / or brightness, thereby displaying image information. After acquiring the image to be processed 20, the image information in the image to be processed 20 needs to be converted into a virtual pixel XP array, where virtual pixels XPX and pixels P are in one-to-one correspondence. It should be noted that virtual pixels XP are not actual pixel structures but electrical signals, while pixels P are actual physical structures existing in the display panel. After converting the image to be processed 20 into multiple virtual pixels XP, the data voltage corresponding to each virtual pixel XP is acquired. During the display stage of the display panel, the data driving processing unit 10 inputs the data voltage of the virtual pixel XP into its corresponding pixel P, and the pixel P can then perform the display function.

[0048] In step S4, during the display phase, pixel P in display area AA displays image information. For the notch area AS, the data driving processing unit 10 still provides an electrical signal. Since there are no pixels in the notch area AS, although the notch area AS receives the electrical signal, it cannot display anything. Specifically, in this embodiment, the data driving processing unit 10 provides the electrical signal to the notch area AS in the following ways: In one embodiment, the data driving processing unit 10 provides a data voltage corresponding to the virtual pixel XP in the notch image area YA to a portion of the notch area AS; in another embodiment, the data driving processing unit 10 provides the data voltage corresponding to the virtual pixel XP in the notch image area YA to the entire area of ​​the notch area AS; in yet another embodiment, the data driving processing unit 10 provides a 255 grayscale voltage to a portion of the notch area AS; and in yet another embodiment, the data driving processing unit 10 provides a 255 grayscale voltage to the entire area of ​​the notch area AS.

[0049] In this embodiment, assuming the display panel is non-irregularly shaped and the image in the notched image area YA can be "displayed" in the notched image area AS, the data driving processing unit 10 still provides the data voltage of the virtual pixel XPY in the notched image area YA to the notched image area AS. Since the notched image area AS still "displays" the image in the notched image area YA, there is no voltage jump on the data line compared to the prior art, thereby solving the bright and dark line phenomenon and improving the display quality. Alternatively, when the image to be processed is a high grayscale image, assuming the display panel is non-irregularly shaped and a white image is "displayed" in the notched image area AS, the data driving processing unit 10 provides a 255 grayscale voltage to the notched image area AS. Compared to the prior art, there is no large voltage jump on the data line voltage, thus solving the dark line phenomenon and improving the display quality.

[0050] Please continue to refer to Figures 2-4 , Figure 4 which Figure 2 is a schematic plan view of the image to be processed corresponding to the driving method shown. In some optional embodiments, in the display stage, the data driving processing unit 10 provides the data voltages corresponding to the virtual pixels in the notch image area YA to all areas of the notch area AS, or the data driving processing unit 10 provides 255 gray-scale voltages to all areas of the notch area AS. In this embodiment, no further partitioning is performed on the notch area AS, which can simplify the driving method of the display panel and simplify the data signals of the data driving processing unit 10.

[0051] It should be noted that Figure 2 only shows one shape of the notch area AS. The display area AA is recessed to form the notch area AS, and the display area AA is similar to the shape of an inverted "concave". Figure 2 In

[0052] In other optional embodiments of the present invention, the shape and size of the notch area AS can be set in various ways, and the relative positional relationship between the notch area AS and the display area AA can also be various. Next, the present invention will exemplarily describe the specific setting methods of the notch area AS.

[0053] An optional setting method of the notch area AS is shown in Figure 5 , Figure 5 which Figure 2 is a schematic plan view of another display panel corresponding to the driving method shown. In this embodiment, the display area AA surrounds the notch area AS. That is, the notch area AS is located inside the display area AA, and the display panel may be hollow at the position of the notch area AS. During the manufacturing process of the display panel, a part of the display area AA can be cut away to form the notch area AS.

[0054] An optional setting method of the notch area AS is shown in Figure 6 , Figure 6 which Figure 2 is a schematic plan view of another display panel corresponding to the driving method shown. In this embodiment, the notch area AS is located at the corner of the display area AA, and the display area AA is similar to a rectangle or a rounded rectangle with a corner missing.

[0055] It should be noted that Figure 2 , Figure 5 and Figure 6 only exemplarily illustrate the specific setting methods of the notch area AS. There are various specific settings for the notch area AS, and they will not be elaborated one by one in this embodiment.

[0056] In some alternative embodiments, please refer to Figure 7 , Figure 7 This is a schematic diagram of a planar structure of a display panel corresponding to another display panel driving method provided in an embodiment of the present invention. The notch area AS includes a central area ASC and a notch edge area ASE. The notch edge area ASE is located on the side of the central area close to the display area, and the notch edge area ASE and the display area AA are adjacent.

[0057] The driving methods include:

[0058] During the display phase, the data driving processing unit 10 provides the data voltage corresponding to the virtual pixel XP in the notched image area YA to the central area ASC, or the data driving processing unit 10 provides a 255 grayscale voltage to the central area ASC.

[0059] In this embodiment, the notched area AS is driven in partitions. For the central area ASC, the data driving processing unit 10 still provides the data voltage of the virtual pixel XPY in the notched image area YA to the central area ASC. Since the central area ASC still "displays" the image in the notched image area YA, there is no voltage jump on the data line compared to the prior art, thus solving the dark line phenomenon and improving display quality. Alternatively, when the image to be processed is a high grayscale image, the data driving processing unit 10 provides a 255 grayscale voltage to the central area ASC. Compared to the prior art, there is no large voltage jump on the data line, thus solving the dark line phenomenon and improving display quality.

[0060] In some alternative embodiments, please continue to refer to Figure 7 During the display phase, the data-driven processing unit 10 transmits a 0 grayscale voltage to the notch edge region ASE. In this embodiment, edge processing is performed on the notch edge region ASE, and the data-driven processing unit 10 transmits a 0 grayscale voltage to the notch edge region ASE, so that the notch edge region ASE "displays" a black image, which can improve the dark line phenomenon that appears in the display area AA near the notch area and improve the display quality.

[0061] It should be noted that, in practical applications, the shape and size of the notch edge area can be set according to the specific situation of the display panel. Figure 7 This is for illustrative purposes only.

[0062] Optional, please continue to refer to Figure 7 The ASE at the edge of the gap surrounds the ASC setting in the center area.

[0063] Optionally, the width of the notch edge area ASE is r, and the width of the display area AA along the line direction X is w. In this embodiment, the width of the notch edge region ASE should not be too wide. An excessively wide notch edge region ASE will result in an excessively large area of ​​"displaying" the black image within the notch area, easily leading to dark lines. In this embodiment, the width is set... It helps improve display quality.

[0064] In some alternative embodiments, please refer to Figure 8 , Figure 8 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in the embodiment of the present invention. The notch edge area includes two sub-edge areas, namely sub-edge area ASE1 and sub-edge area ASE2. Sub-edge area ASE1 and sub-edge area ASE2 are located on opposite sides of the central area ASC along the row direction X.

[0065] It should be noted that, in practical applications, the shape and size of the two sub-edge areas can be set according to the specific situation of the display panel. Figure 8 This is for illustrative purposes only. Optional, please refer to... Figure 9 , Figure 9 This is a schematic diagram of a planar structure of another display panel corresponding to another display panel driving method provided in an embodiment of the present invention. Figure 9 This illustrates another way to set up the two sub-edge regions.

[0066] It should be noted that, Figure 8 and Figure 9 Only Figure 2 Based on the display panel shown, the central area ASC and the notch edge area ASE will be described below. The present invention will be further explained below in... Figure 5 and Figure 6 Based on the display panel shown, the central area ASC and the notch edge area ASE will be explained.

[0067] Optional, please refer to Figure 10 and Figure 11 , Figure 10 This is a schematic diagram of a planar structure of another display panel corresponding to another display panel driving method provided in an embodiment of the present invention. Figure 11 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in the embodiments of the present invention; Figure 10 and Figure 11 exist Figure 5 Based on the display panel shown, an exemplary description is given for the central area ASC and the notch edge area ASE. Figure 10 and Figure 11 The display panel shown is also applicable to the driving method provided in the embodiments of the present invention.

[0068] Optional, please refer to Figure 12 , Figure 12 This is a schematic diagram of the planar structure of another display panel corresponding to another display panel driving method provided in the embodiments of the present invention; Figure 12 exist Figure 6 Based on the display panel shown, an exemplary description is given for the central area ASC and the notch edge area ASE. Figure 12 The display panel shown is also applicable to the driving method provided in the embodiments of the present invention.

[0069] In some alternative embodiments, please continue to refer to Figure 9 ,

[0070] The display area AA includes a first irregular edge L1 and a second edge L2 that are arranged opposite to each other along the second direction Y. The first irregular edge L1 of the display area AA is recessed to form a notch area AS. The first irregular edge L1 includes a first sub-edge L0 that extends along the row direction X.

[0071] The width of the display area along the row direction X is w, the length of the first sub-edge L0 along the row direction X is a, and the minimum distance between sub-edge areas ASE1 and ASE2 is b. The direction X intersects with the second direction Y.

[0072] In this embodiment, the difference between a and b should not be too large. Typically, the length a of the first sub-edge L0 in the display panel is relatively fixed, while the value of b can be set in the specific driving method. If the value of b is too small, the difference between a and b will be too large, resulting in an excessively large area of ​​"displaying" the black image in the notch area, easily leading to dark lines. In this embodiment, the value of b is set... It helps improve display quality.

[0073] This invention provides a display panel, which is driven by the driving method provided by this invention.

[0074] This invention provides a display device, including a display panel according to any of the above embodiments. Please refer to... Figure 13 , Figure 13 This is a schematic diagram of the structure of a display device provided in an embodiment of the present invention. Figure 13 The provided display device 1000 includes the display panel 1001 provided in any of the above embodiments of the present invention. Figure 13 This embodiment uses a mobile phone as an example to illustrate the display device 1000. It is understood that the display device provided in this embodiment can be any other display device with display function, such as a computer, television, or vehicle-mounted display device; this invention does not impose specific limitations on this. The display device provided in this embodiment has the beneficial effects of the display panel provided in this embodiment. For details, please refer to the specific descriptions of the display panel in the above embodiments; these will not be repeated here.

[0075] As can be seen from the above embodiments, the display panel driving method, display panel, and display device provided by the present invention achieve at least the following beneficial effects:

[0076] Assuming the display panel is non-irregularly shaped and the image in the notched image area can be "displayed" within the notched area, the data driving processing unit still provides data voltages to the virtual pixels in the notched image area. Since the notched area still "displays" the image in the notched image area, there are no voltage jumps on the data lines compared to existing technologies, thus resolving bright and dark line phenomena and improving display quality. Alternatively, when the image to be processed is a high grayscale image, assuming the display panel is non-irregularly shaped and a white image is "displayed" within the notched area, the data driving processing unit provides a 255 grayscale voltage to the notched area. Compared to existing technologies, there are no significant voltage jumps on the data lines, thus resolving dark line phenomena and improving display quality.

[0077] While specific embodiments of the invention have been described in detail by way of examples, those skilled in the art should understand that the examples are for illustrative purposes only and not intended to limit the scope of the invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. A driving method for a display panel, characterized in that, The display panel includes: A display area having a notch area; the display area includes multiple pixels, and the pixel row at the location of the notch area corresponds to at least six pixel columns; and Data-driven processing unit; The driving method includes: Obtain the image to be processed; The image to be processed is divided into a normal display image area and a notched image area; the normal display image area corresponds to the display area, and the notched image area corresponds to the notched area; The notch area includes a central area and a notch edge area. The notch edge area is located on the side of the central area closer to the display area, and the notch edge area is adjacent to the display area. The image to be processed is converted into multiple virtual pixels and the data voltage corresponding to each virtual pixel is obtained. The virtual pixels in the normal display image area correspond one-to-one with the pixels in the display area. The driving method includes: During the display phase, the data driving processing unit provides the data voltage corresponding to the virtual pixel in the notched image area to the central area, or the data driving processing unit provides a 255 grayscale voltage to the central area; During the display phase, the data-driven processing unit transmits a 0 grayscale voltage to the notch edge region.

2. The driving method according to claim 1, characterized in that, The edge region of the notch surrounds the central region.

3. The driving method according to claim 2, characterized in that, The width of the notch edge area is r, and the width of the display area along the row direction is w, r ≤ .

4. The driving method according to claim 1, characterized in that, The notch edge region includes two sub-edge regions, which are located on opposite sides of the central region along the direction of travel.

5. The driving method according to claim 4, characterized in that, The display area includes a first irregular edge and a second edge disposed opposite to each other along a second direction. The first irregular edge of the display area is recessed to form the notch area. The first irregular edge includes a first sub-edge extending along the row direction. The width of the display area along the row direction is w, the length of the first sub-edge along the row direction is a, and the minimum distance between the two sub-edge areas is b, where ab ≤ The row direction intersects with the second direction.

6. The driving method according to claim 1, characterized in that, The display area surrounds the notch area, or the display area is recessed to form the notch area.

7. A display panel, characterized in that, The display panel is driven using the driving method described in any one of claims 1-6.

8. A display device, characterized in that, Includes the display panel as described in claim 7.

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