Patent Grant
12288514
The present disclosure relates to the field of display technologies, and in particular to a display method, a display device, and a computer readable medium.
Due to limitations of peripheral hardware, an OLED (Organic Light-Emitting Diode) panel cannot support a full-screen high refresh rate when displaying. With the same peripheral hardware, which can support the OLED panel to display at a full-screen refresh rate of 120 Hz, the display resolution must be reduced to achieve a higher refresh rate.
In a first aspect, an embodiment of the present disclosure provides a display method, including:
In some embodiments, subsequent to determining whether the local area refreshed at the second refresh rate needs to move,
If the local area refreshed at the second refresh rate needs to move, performing the full-screen display refresh on the display panel at the first refresh rate for one frame; meanwhile, setting the refresh factor to n.
In some embodiments, subsequent to determining whether the local area refreshed at the second refresh rate needs to move,
In some embodiments, when the local area currently refreshed at the second refresh rate is refreshed at the second refresh rate for one frame, images in other areas of the display panel are retained; and
when the another local area of the display panel is refreshed at the second refresh rate, images in other areas of the display panel are retained.
In some embodiments, when the local area of the display panel is refreshed at the second refresh rate, images in other areas of the display panel are retained; and
when the refresh factor is less than the set value, the same local area of the display panel continues being refreshed at the second refresh rate, and images in other areas of the display panel are retained.
In some embodiments, the refresh factor is times number of refresh at the second refresh rate/times number of refresh with the first refresh rate in a same time period; and
the refresh factor is in a range of 2 to 6; and the refresh factor is an integer.
In some embodiments, the set value is in a range of 3 to 6, and the set value is an integer.
In some embodiments, the set value is 3.
In some embodiments, the second refresh rate is 2 to 6 times the first refresh rate.
In some embodiments, the first refresh rate is 120 Hz, and the second refresh rate is 240 Hz;
or, the first refresh rate is 120 Hz, and the second refresh rate is 360 Hz.
In a second aspect, an embodiment of the present disclosure further provides a display device, including a display data providing module, a timing control module, a processing module, and a display panel;
In some embodiments, the display data providing module is further configured to provide a frame of display data with the first refresh rate to the timing control module, when the local area refreshed at the second refresh rate needs to move.
In some embodiments, the display data providing module is further configured to provide a frame of display data with the second refresh rate to the timing control module, to drive a current local area of the display panel to display, when the local area refreshed at the second refresh rate needs to move;
In some embodiments, the processing module adopts a central processing unit; the timing control module adopts a timing controller; and
the display panel includes a pixel array configured for displaying the display data.
In a third aspect, the disclosed embodiments provide a computer readable medium storing a computer program which, when executed by a processor, cause the processor to perform the above-mentioned display method.
The accompanying drawings, which are included to provide a further understanding of the present disclosure and constitute a part of this specification, serve to explain the present disclosure together with the following detailed description, but do not constitute a limitation of the present disclosure. The above and other features and advantages will become more apparent to one of ordinary skill in the art by describing detailed examples with reference to the accompanying drawings, in which:
In order to enable one of ordinary skill in the art to better understand the technical solutions of the embodiments of the present disclosure, a display method, a display device, and a computer readable medium provided in the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
The embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, and may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to one of ordinary skill in the art.
The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of configurations formed based on a manufacturing process. Thus, the regions illustrated in the figures have illustrative properties, and the shapes of the regions shown in the figures illustrate specific shapes of regions of elements, but are not intended to be limiting.
In the following, the terms “first”, “second” are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined by “first” or “second” may include explicitly or implicitly one or more such features. In the description of the embodiments of the present disclosure, “a plurality of” means two or more unless otherwise specified.
In the related art, a refresh rate that an OLED panel can support is limited, due to limitations of peripheral hardware. For example, at a specific refresh rate, a maximum row refresh that can be supported by a source driver is fixed; and at a specific refresh rate, a maximum column refresh that can be supported by a bandwidth of a video interface is fixed. That is, when the source driver and the bandwidth of the video interface are determined, a maximum full-screen refresh rate that the OLED panel can support is determined. In order to support higher refresh rates under the same hardware conditions, the display resolution must be reduced.
When the OLED panel is refreshed at a higher frequency, due to limitations of a bandwidth of an overall video interface, an area that can be displayed will be reduced. In this case, a whole display area of the OLED panel is divided into a high frequency refresh area and a low frequency refresh area, and an image displayed in the low frequency refresh area is retained when the high frequency refresh area is refreshed.
On one hand, when the high frequency refresh area of the OLED panel is refreshed in a high frequency, the image in the low frequency refresh area is retained. That is, display data of pixels in the low frequency refresh area are not updated when the high frequency refresh area is refreshed in a high frequency. The display data of the pixels in the low frequency refresh area are maintained by a holding capacitor, and the display data cannot be maintained for a long time due to an electric leakage phenomenon existing in the holding capacitor. That is, the image displayed in the low frequency refresh area cannot be maintained well for a long time, resulting in that a black image appears in the low frequency refresh area when the high frequency refresh area is refreshed in a high frequency.
On the other hand, when the high frequency refresh area of the OLED panel moves (that is, the local area of the OLED panel, which is currently refreshed at a higher refresh rate, is not required to be freshed at the higher refresh rate later, and another different local area of the OLED panel is then required to be refreshed at the higher refresh rate), a previous frame of image refreshed at the high frequency will enter the low frequency refresh area, and the image will be retained. If this is not processed, severe image trail will be caused, resulting in an image tearing phenomenon, referring to
In order to solve the above problem, in a first aspect, an embodiment of the present disclosure provides a display method, and referring to
Step S1: performing a full-screen display refresh on a display panel at a first refresh rate; meanwhile, setting a refresh factor to n, where n is a positive integer. For example, n is 1.
Step S2: determining whether there is a local area of the display panel to be refreshed at a second refresh rate.
If there is no local area of the display panel to be refreshed at the second refresh rate, continue to step S1: performing the full-screen display refresh on the display panel at the first refresh rate.
If there is a local area of the display panel to be refreshed at the second refresh rate, go to step S3: refreshing the local area of the display panel at the second refresh rate; meanwhile, increasing the refresh factor by m, where m is a positive integer. For example, m is 1.
In some embodiments, when the local area of the display panel is refreshed at the second refresh rate in step S3, images in other areas of the display panel are maintained.
With this determination result of step S2 and the method of executing step S3 according to this determination result, high frequency local refresh can be realized in the display panel, thereby solving the problem that the resolution of full-screen display must be reduced when performing the high frequency refresh, realizing clearer and finer image display in the local area of the display panel, and improving display effect of the full-screen image of the display panel.
Then, execute step S4: determining whether the local area refreshed at the second refresh rate needs to move.
If the local area refreshed at the second refresh rate needs not to move, go to step S5: determining whether the refresh factor is greater than or equal to a set value.
If the refresh factor is greater than or equal to the set value, go to step S1: performing the full-screen display refresh on the display panel at the first refresh rate, that is, refreshing the display panel at the first refresh rate; meanwhile, setting the refresh factor to n.
With this determination result of step S5 and the method of executing step S1 according to this determination result, it can solve the problem that when the local area of the display panel is refreshed at the second refresh rate, the holding capacitor in other areas (i.e. areas refreshed at the first refresh rate) of the display panel cannot maintain the display data for a long time, which causes the black image in the area refreshed at the first refresh rate, so that the display data can be maintained well in the area refreshed at the first refresh rate, thereby ensuring normal display of a full-screen image of the display panel when the local area of the display panel is refreshed at the second refresh rate.
If the refresh factor is less than the set value, continue to step S3: refreshing the local area of the display panel at the second refresh rate, that is, refreshing the same local area of the display panel at the second refresh rate; meanwhile, increasing the refresh factor by m.
In some embodiments, when the refresh factor is less than the set value and the same local area of the display panel continues being refreshed at the second refresh rate in step S3, images in other areas of the display panel are retained. When the refresh factor is less than the set value, and the same local area of the display panel is refreshed at the second refresh rate, the holding capacitor in other areas of the display panel can well maintain the display data, and normal display of the full-screen image of the display panel is ensured when the local area of the display panel is refreshed at the second refresh rate.
The second refresh rate is greater than the first refresh rate, and the second refresh rate is an integer multiple of the first refresh rate.
In some embodiments, the second refresh rate is 2 to 6 times the first refresh rate.
In some embodiments, the first refresh rate is 120 Hz; and the second refresh rate is 240 Hz. In some embodiments, the first refresh rate is 120 Hz; and the second refresh rate is 360 Hz.
In some embodiments, the refresh factor is times number of refresh at the second refresh rate/times number of refresh with the first refresh rate in a same time period; the refresh factor is in a range of 2 to 6; and the refresh factor is an integer.
In some embodiments, the set value is in a range of 3 to 6, and the set value is an integer.
In some embodiments, the set value is 3.
In some embodiments, referring to
With this determination result of step S4 and the method of performing step S1 according to this determination result, it can solve the problem of image tearing due to the image trail caused by the fact that the image refreshed at the second refresh rate in a previous frame enters into other areas (i.e. the areas refreshed at the first refresh rate) of the display panel and is retained when the local area refreshed at the second refresh rate moves, and ensure the normal display of the full-screen image of the display panel when the local area refreshed at the second refresh rate moves.
In some embodiments, referring to
In some embodiments, when the current local area refreshed at the second refresh rate is refreshed for one frame at the second refresh rate in step S6, images in other areas of the display panel are retained; when another local area of the display panel is refreshed at the second refresh rate in step S3, the images in other areas of the display panel are retained.
With this determination result of step S4 and the method of performing step S6 according to this determination result, it can solve the problem of image tearing due to the image trail caused by the fact that the image refreshed at the second refresh rate in a previous frame enters into other areas (i.e. the areas refreshed at the first refresh rate) of the display panel and is retained when the local area refreshed at the second refresh rate moves, and ensure the normal display of the full-screen image of the display panel when the local area refreshed at the second refresh rate moves.
According to the display method provided by the embodiment of the present disclosure, for one thing, high frequency local refresh can be realized in the display panel, thereby solving the problem that the resolution of full-screen display must be reduced when performing the high frequency refresh, realizing clearer and finer image display in the local area of the display panel, and improving display effect of the full-screen image of the display panel. For another thing, the display method can solve the problem that when the local area of the display panel is refreshed at the second refresh rate, the holding capacitor in other areas (i.e. areas refreshed at the first refresh rate) of the display panel cannot maintain the display data for a long time, which causes the black image in the area refreshed at the first refresh rate, so that the display data can be maintained well in the area refreshed at the first refresh rate, thereby ensuring normal display of a full-screen image of the display panel when the local area of the display panel is refreshed at the second refresh rate. For yet another thing, the display method can solve the problem of image tearing due to the image trail caused by the fact that the image refreshed at the second refresh rate in a previous frame enters into other areas (i.e. the areas refreshed at the first refresh rate) of the display panel and is retained when the local area refreshed at the second refresh rate moves, and ensure the normal display of the full-screen image of the display panel when the local area refreshed at the second refresh rate moves.
In a second aspect, based on the display method in the foregoing embodiments, an embodiment of the present disclosure further provides a display device that displays with the foregoing display method.
According to the display device, by arranging the processing module 3 and the display data providing module 1, on one hand, high frequency local refresh can be realized in the display panel 4, thereby solving the problem that the resolution of full-screen display must be reduced when performing the high frequency refresh, realizing clearer and finer image display in the local area of the display panel 4, and improving display effect of the full-screen image of the display panel 4. On the other hand, it can solve the problem that when the local area of the display panel 4 is refreshed at the second refresh rate, the holding capacitor in other areas (i.e. areas refreshed at the first refresh rate) of the display panel 4 cannot maintain the display data for a long time, which causes the black image in the area refreshed at the first refresh rate, so that the display data can be maintained well in the area refreshed at the first refresh rate, thereby ensuring normal display of a full-screen image of the display panel when the local area of the display panel 4 is refreshed at the second refresh rate.
In some embodiments, the display data providing module 1 is further configured to provide a frame of display data with the first refresh rate to the timing control module 2, when the local area refreshed at the second refresh rate needs to move. With this functional configuration of the display data providing module 1, it can solve the problem of image tearing due to the image trail caused by the fact that the image refreshed at the second refresh rate in a previous frame enters into other areas (i.e. the areas refreshed at the first refresh rate) of the display panel 4 and is retained when the local area refreshed at the second refresh rate moves, and ensure the normal display of the full-screen image of the display panel 4 when the local area refreshed at the second refresh rate moves.
In some embodiments, the display data providing module 1 is further configured to provide a frame of display data with the second refresh rate to the timing control module 2, to drive the current local area of the display panel 4 to display, when the local area refreshed at the second refresh rate needs to move. The display data providing module 1 is further configured to provide a frame of display data with the first refresh rate to the timing control module 2, when the local area refreshed at the second refresh rate needs to move and the refresh factor is greater than or equal to the set value. The display data providing module 1 is further configured to provide the display data with the second refresh rate to the timing control module 2, to drive another local area of the display panel 4 to display, when the local area refreshed at the second refresh rate needs to move and the refresh factor is less than the set value. With this functional configuration of the display data providing module 1, it can solve the problem of image tearing due to the image trail caused by the fact that the image refreshed at the second refresh rate in a previous frame enters into other areas (i.e. the areas refreshed at the first refresh rate) of the display panel 4 and is retained when the local area refreshed at the second refresh rate moves, and ensure the normal display of the full-screen image of the display panel 4 when the local area refreshed at the second refresh rate moves.
In some embodiments, the processing module 3 adopts a central processing unit (e.g., CPU); the timing control module 2 adopts a timing controller (e.g., TCON); the display data providing module 1 is, for example, a GPU; and the display panel 4 includes a pixel array configured for displaying the display data. In addition, the display panel 4 further includes a plurality of pixel driving circuits, the plurality of pixel driving circuits are connected to the pixels in the pixel array in one-to-one correspondence, and the pixel driving circuits can independently drive the pixels, so that the pixel array realizes a divisional display (e.g., a partitioned-screen display) and a non-divisional display (e.g., a non-partitioned-screen display) of the display data.
According to the display device provided by the embodiment of the present disclosure, by arranging the processing module 3 and the display data providing module 1, for one thing, high frequency local refresh can be realized in the display panel 4, thereby solving the problem that the resolution of full-screen display must be reduced when performing the high frequency refresh, realizing clearer and finer image display in the local area of the display panel 4, and improving display effect of the full-screen image of the display panel 4. For another thing, it can solve the problem that when the local area of the display panel 4 is refreshed at the second refresh rate, the holding capacitor in other areas (i.e. areas refreshed at the first refresh rate) of the display panel 4 cannot maintain the display data for a long time, which causes the black image in the area refreshed at the first refresh rate, so that the display data can be maintained well in the area refreshed at the first refresh rate, thereby ensuring normal display of a full-screen image of the display panel when the local area of the display panel 4 is refreshed at the second refresh rate. For yet another thing, it can solve the problem of image tearing due to the image trail caused by the fact that the image refreshed at the second refresh rate in a previous frame enters into other areas (i.e. the areas refreshed at the first refresh rate) of the display panel 4 and is retained when the local area refreshed at the second refresh rate moves, and ensure the normal display of the full-screen image of the display panel 4 when the local area refreshed at the second refresh rate moves.
The display device may be any product or component with a VR (Virtual Reality) display function, such as an OLED panel, an OLED television, a mobile phone, a tablet computer, a notebook computer, a monitor, a digital photo frame, and a navigator.
In a third aspect, an embodiment of the present disclosure further provides a computer readable medium storing a computer program which, when executed by a processor, cause a processor to perform the display method in the foregoing embodiments.
The computer readable medium can also realize the advantageous effects obtained by the above display method.
It will be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present disclosure, and the present disclosure is not limited thereto. It will be apparent to one of ordinary skill in the art that various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and such modifications and improvements are also considered to be within the scope of the present disclosure.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2022/113381 | 8/18/2022 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2024/036572 | 2/22/2024 | WO | A |
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| Number | Date | Country | |
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| 20250095563 A1 | Mar 2025 | US |
