Patent Grant
11508323
This application claims priority to Chinese Patent Application No. 202011199871.2 filed on Oct. 29, 2020, which is incorporated herein in its entirety.
The present application relates to the field of display technology, in particular to a display panel, a display device and a method for driving the display panel.
Three-dimensional display is also referred as true three-dimensional display, and displays an image which is a three-dimensional picture close to a real object in a real three-dimensional space, and allows multiple people to view a stereo image with naked eyes from multiple angles at the same time without any auxiliary equipment. Its principle is to use visual afterimage of human eyes, that is, persistence of vision.
However, spatial voxels formed by rotation displaying in the related art are sparse outside and dense inside, dark outside and bright inside, which results in a poor viewing effect for users. Thus, it is an urgent technical problem for those skilled in the art to improve the viewing effect of users.
According to a first aspect of the present application, a display panel is provided and includes: a rotation axis; at least one display area located at one side of the rotation axis; wherein the display area includes a plurality of display sub-areas; and a plurality of driving-control modules corresponding to the plurality of display sub-areas. The plurality of display sub-areas are sequentially arranged along a first direction; the first direction is directed from the rotation axis to the display area; when the display panel rotates around the rotation axis, areas passed by the plurality of display sub-areas form a plurality of imaging sub-areas. The plurality of driving-control modules are configured to control the plurality of display sub-areas to have different display parameters, respectively, thereby enabling imaging brightness of the plurality of imaging sub-areas to be within a preset brightness range.
In some possible embodiments of the first aspect of the present application, the display parameters are frame frequencies; and the plurality of the driving-control modules are configured to control the plurality of the display sub-areas to have different frame frequencies and the frame frequencies of the plurality of the display sub-areas to be increased sequentially along the first direction.
In some possible embodiments of the first aspect of the present application, the display panel further includes: a memory module and a partition module; the memory module is electrically coupled to the partition module; the partition module is electrically coupled to the plurality of driving-control modules. Within a preset time, the memory module is configured to transmit a first preset number of data source slices to the partition module. The partition module is configured to divide each data source slice into a plurality of sub-slices corresponding to the plurality of display sub-areas, and transmit the plurality of sub-slices to the plurality of driving-control modules, respectively. Each of the plurality of driving-control modules is configured to receive a second preset number of the sub-slices according to the frame frequency of the display sub-area corresponding to the each of the plurality of driving-control modules, and control the display sub-area corresponding to the each of the plurality of driving-control modules to sequentially display the second preset number of the sub-slices. The second preset number is less than or equal to the first preset number.
In some possible embodiments of the first aspect of the present application, the numbers of the sub-slices received by the plurality of driving-control modules corresponding to the plurality of the display sub-areas are increased sequentially along the first direction.
In some possible embodiments of the first aspect of the present application, the plurality of display sub-areas include a first display sub-area, a second display sub-area and a third display sub-area which are sequentially arranges along the first direction. The plurality of sub-slices include a first sub-slice, a second sub-slice and a third sub-slice; the first sub-slice, the second sub-slice and the third sub-slice are corresponding to the first display sub-area, the second display sub-area and the third display sub-area, respectively. The plurality of driving-control modules at least include: a first driving-control module configured to receive a third preset number of first sub-slices and control the first display sub-area to sequentially display the third preset number of the first sub-slices; a second driving-control module configured to receive a fourth preset number of second sub-slices and control the second display sub-area to sequentially display the fourth preset number of the second sub-slices; and a third driving-control module configured to receive the fourth preset number of third sub-slices and control the third display sub-area to sequentially display the fourth preset number of the third sub-slices. When the third display sub-area displays the third sub-slices, two adjacent frame groups sequentially display two different third sub-slices, each frame group includes at least two frames, and a same third sub-slice is displayed in all frames of each frame group; the third preset number is less than the fourth preset number.
In some possible embodiments of the first aspect of the present application, each of the plurality of driving-control modules includes: an output control unit, a drive-chip control unit and a drive chip; the output control unit is electrically coupled to the partition module; the drive-chip control unit is electrically coupled to the output control unit; the drive chip is electrically coupled to the drive-chip control unit. The drive-chip control unit is configured to control the output control unit to output a second preset number of the sub-slices, according to the frame frequency of the display sub-area corresponding to the each of the plurality of driving-control modules. The drive chip is configured to receive the second preset number of the sub-slices and drive the display sub-area corresponding to the each of the plurality of driving-control modules to sequentially display the second preset number of the sub-slices.
In some possible embodiments of the first aspect of the present application, there is one display area at each side of the rotation axis, and the two display areas are symmetrically arranged with the rotation axis as an axis of symmetry; the plurality of display sub-areas in the two display areas are symmetrically arranged; in the two display areas, the display sub-areas at the same distance from the rotation axis are corresponding to the same driving-control module; or, the display area is at one side of the rotation axis.
In some possible embodiments of the first aspect of the present application, the display parameters are display brightness; and the display brightness of the plurality of display sub-areas are increased sequentially along the first direction.
In some possible embodiments of the first aspect of the present application, each of the plurality of display sub-areas includes a plurality of sub-regions; each of the plurality of driving-control modules includes a plurality of driving-control units corresponding to the plurality of sub-regions in a one-to-one manner; the plurality of driving-control units are configured to control the display parameters of the plurality of sub-regions, respectively; the display parameters of the sub-regions in the same display sub-area are the same.
In some possible embodiments of the first aspect of the present application, all of the plurality of sub-regions are divided into a plurality of attention areas; the driving-control units corresponding to a plurality of sub-regions in the plurality of attention areas have different levels of interference.
According to a second aspect of the present application, a display device is provided and includes a display panel with a rotation axis. The display panel includes: at least one display area located at one side of the rotation axis; wherein the display area includes a plurality of display sub-areas; and a plurality of driving-control modules corresponding to the plurality of display sub-areas in a one-to-one manner. The plurality of display sub-areas are sequentially arranged along a first direction; the first direction is directed from the rotation axis to the display area; when the display panel rotates around the rotation axis, areas passed by the plurality of display sub-areas form a plurality of imaging sub-areas. The plurality of driving-control modules are configured to control values of display parameters of the plurality of display sub-areas to be monotonically changed along the first direction, thereby enabling imaging brightness of the plurality of imaging sub-areas to be within a preset brightness range.
According to a third aspect of the present application, a method for driving any one of the foregoing display panel is provided and includes: dividing the display panel into areas according to a division rule, wherein the division rule includes dividing the display panel into a plurality of display sub-areas along a direction from a rotation axis to a display area; wherein the display panel includes a rotation axis for rotation, the display area is located on at least one side of the rotation axis; when the display panel rotates around the rotation axis, areas passed by the plurality of display sub-areas form a plurality of imaging sub-areas; and controlling the plurality of display sub-areas to have different display parameters, thereby enabling imaging brightness of the plurality of imaging sub-areas to be within a preset brightness range.
In some possible embodiments of the first aspect of the present application, the controlling the plurality of display sub-areas to have different display parameters, includes: controlling frame frequencies of the plurality of display sub-areas, which are arranged sequentially along the direction from the rotation axis to the display area, to be increased sequentially; wherein the frame frequencies are the display parameters.
In some possible embodiments of the first aspect of the present application, the controlling frame frequencies of the plurality of display sub-areas, which are arranged sequentially along the direction from the rotation axis to the display area, to be increased sequentially, includes: dividing each data source slice into a plurality of sub-slices corresponding to the plurality of display sub-areas; acquiring a second preset number of sub-slices corresponding to the frame frequency of each of the plurality of display sub-areas within a preset time period, and enabling the each of the plurality of display sub-areas to sequentially display the second preset number of sub-slices.
In some possible embodiments of the first aspect of the present application, the display parameters are display brightness; the controlling the plurality of display sub-areas to have different display parameters, includes: controlling display brightness of the plurality of display sub-areas, which are arranged sequentially along the direction from the rotation axis to the display area, to be increased sequentially.
It is to be understood that the contents in this section are not intended to identify the key or critical features of the embodiments of the present application, and are not intended to limit the scope of the present application. Other features of the present application will become readily apparent from the following description.
The drawings are included to provide a better understanding of the application and are not to be construed as limiting the application. Wherein:
Reference will now be made in detail to the exemplary embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein the various details of the embodiments of the present application are included to facilitate understanding and are to be considered as exemplary only. Accordingly, a person skilled in the art should appreciate that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. Also, descriptions of well-known functions and structures are omitted from the following description for clarity and conciseness.
The terms such as “first” and “second” in the specification and claims of the present application are merely used to differentiate similar components rather than to represent any order or sequence. It is to be understood that the data so used may be interchanged where appropriate, such that the embodiments of the present application described herein may be implemented in a sequence other than those illustrated or described herein. In addition, the terms “include” and “have” or their variations are intended to encompass a non-exclusive inclusion, such that a process, method, system, product, or device that include a series of steps or units include not only those steps or units that are explicitly listed but also other steps or units that are not explicitly listed, or steps or units that are inherent to such process, method, product, or device. In the specification and claims, “and/or” means at least one of the connected objects.
A basic model for rotation displaying is shown in
In view of this, embodiments of the present application provide a display panel, a display device and a method for driving the display panel, which can improve the viewing effect of users.
According to a first aspect of the present application, a display panel is provided. As shown in
The foregoing display panel can rotate around the rotation axis 1. As shown in
In the related art, when the display panel displays a picture, display parameters of the display panel are consistent everywhere, which results in a larger imaging brightness of the imaging sub-areas close to the rotation axis 1 and a smaller imaging brightness of the imaging sub-areas far away from the rotation axis 1, thereby resulting in uneven imaging brightness of the display panel and a poor viewing effect for users. While in the display panel provided in the present application, multiple driving-control modules 4 are included and are corresponding to the multiple display sub-areas 21 in a one-to-one manner, that is, each display sub-areas 21 can be individually controlled by the corresponding driving-control module 4. Therefore, different driving-control modules 4 can control different display sub-areas 21 to have different display parameters, so that imaging brightness of the imaging sub-areas corresponding to the different display sub-areas 21 are within the preset brightness range. In order to ensure that users have the best viewing effect, the imaging brightness of multiple imaging sub-areas should be the same. However, due to errors and other reasons, the imaging brightness of each imaging sub-area may float within the preset brightness range. At this point, a brightness difference between various imaging sub-areas is less than a preset value. Since the brightness difference between various imaging sub-areas is small and will not be detected by the human eyes, the viewing effect of the users is also guaranteed. The display panel provided in this embodiment may be any one of an OLED display panel, a MINI LED display panel, or a Micro LED display panel.
In some modified implementations of the first aspect of the present application, controlling the multiple display sub-areas 21 to have different display parameters specifically includes: controlling frame frequencies of the multiple display sub-areas 21 arranged sequentially along the first direction to increase sequentially, where the frame frequency is a display parameter.
The frame frequency is a refresh rate of the display panel. In a case that the number of rotations remains unchanged and the frame frequencies are different, it means that the numbers of slices are different when the display panel rotates for one revolution. In a case of a same display frame frequency. The smaller the distance from one display sub-area to the rotation axis 1 serving as a rotating shaft, the greater the arrangement density of voxels in an imaging sub-area corresponding to the one display sub-area, and the greater the brightness of the imaging sub-area corresponding to the one display sub-area during rotation displaying. On the contrary, the greater the distance from one display sub-area to the rotation axis 1 serving as the rotating shaft, the smaller the arrangement density of voxels in an imaging sub-area corresponding to the one display sub-area, and the smaller the brightness of the imaging sub-area corresponding to the one display sub-area during rotation displaying. Therefore, in the related art, during rotation displaying, an arrangement density of voxels is gradually reduced along a direction from the rotation axis 1 to the imaging area, which results in that imaging brightness sequentially decreases. It can be known from the above analysis that the imaging brightness of various imaging sub-areas can be adjusted by adjusting the arrangement densities of voxels in various imaging sub-areas. Adjustment of the arrangement densities of voxels in various imaging sub-areas may be achieved by adjusting frame frequencies. Specifically, the imaging sub-areas may include a first imaging sub-area 31 and a second imaging region 32. A distance between the first imaging sub-area 31 and the rotation axis 1 is smaller than a distance between the second imaging sub-area 32 and the rotation axis 1. Therefore, in the related art, an imaging brightness of the first imaging sub-area 31 is greater than an imaging brightness of the second imaging sub-area 32. In order to reduce the imaging brightness difference between the first imaging sub-area 31 and the second imaging sub-area 32, an arrangement density of voxels in the first imaging sub-area 31 should be reduced and/or an arrangement density of voxels in the second imaging sub-area 32 should be increased, and this can be achieved by reducing a frame frequency in the first display sub-area 211 (as shown in
Specifically, as shown in
The memory module 5 can receive the data source slice 7 and transmit it to the partition module 6 under control of a memory control module. Specifically, a communication module may be provided in the display device. The communication module may be Bluetooth or AP, which is used to interact with external devices to achieve wireless communication. After the memory module 5 receives the data source slice 7, the memory module 5 transmits the data source slice 7 to the partition module 6 under control of a display control module 9. That is, the display control module 9 can control the memory module 5 to store and retrieve the data source slice 7. The memory module 5 may be a double data rate synchronous dynamic random access memory (DDR), or a memory module in a field programmable gate array (FPGA). Each data source slice 7 is corresponding to each display area 2 of the display panel. The data source slice 7 is partitioned by the partition module 6 into multiple sub-slices which can be displayed in the corresponding display sub-areas 21, respectively. The number of data source slices 7 transmitted to the partition module 6 is equal to the first preset number, and then the number of sub-slices corresponding to each display sub-area 21 is also equal to the first preset number. Then, the driving-control module 4 receives the second preset number of sub-slices according to the frame frequency of the display sub-area 21 corresponding to the driving-control module 4, and controls its corresponding display sub-area 21 to sequentially display the second preset number of sub-slices. The second preset numbers corresponding to various driving-control modules 4 may be the same or different.
Specifically, the numbers of the sub-slices received by the driving-control modules 4 corresponding to the plurality of the display sub-areas 21, increase sequentially along the first direction.
In the display area 2, as shown in
Specifically, as shown in
This embodiment provides another implementation manner in which multiple display sub-areas 21 have different frame frequencies. In this embodiment, the number of sub-slices received by two driving-control modules 4 may be the same, but frame frequencies of display sub-areas 21 corresponding to the two driving-control modules 4 are different. The first driving-control module 4 receives a third preset number of first sub-slices 71, and controls the first display sub-areas 211 to sequentially display the third preset number of first sub-slices 71 in the third preset number of consecutive frames. The second driving-control module 4 receives the fourth preset number of second sub-slices 72, and controls the second display sub-area 212 to sequentially display the fourth preset number of second sub-slices 72 in the fourth preset number of consecutive frames. A time period corresponding to the third preset number of frames in the first display sub-area 211 and a time period corresponding to the fourth preset number of frames in the second display sub-area 212 are the same, and both are a preset time period. The third driving-control module 4 receives a fourth preset number of third sub-slices 73, which are stored by a drive chip 413 in the driving-control module 4 and are repeatedly output in a multiplied frequency until a new third sub-slice 73 arrives. Specifically, the third driving-control module 4 controls the third display sub-area 213 to sequentially display the fourth preset number of third sub-slices 73 in the fourth preset number of consecutive frame groups. A same third sub-slice 73 is displayed in multiple frames in each frame group and each frame group includes n frames. Therefore, within a preset time period, the third display sub-area 213 is refreshed n times the fourth preset number. Specific display effects of the above embodiment is that: as shown in
Specifically, as shown in
The output control unit 411 can output sub-slices to the drive chip 413 under control of the drive-chip control unit 412. The drive chip 413 can receive data valid signal and frame start signal transmitted by a display control module 9. The data valid signal and frame start signal can reflect the frame frequency of the display sub-area 21. In addition, the output control unit 411 can further convert data format of output sub-slices into a format that can be recognized by the drive chip 413. The drive chip 413 controls the display sub-area 21 to sequentially display sub-slices.
Specifically, as shown in
As shown in
In addition, the rotation axis 1 may also be located at one side of the display panel. At this point, only one side of the rotation axis 1 is provided with the display area 2.
Specifically, the display parameter is display brightness, and the display brightness of multiple display sub-areas 21 increase sequentially along the first direction.
In the related art, display brightness of multiple imaging sub-areas are sequentially reduced in a direction from a rotation axis to the imaging sub-areas. Then, by reducing an imaging brightness of an imaging sub-area close to the rotation axis 1 and/or increasing an imaging brightness of an imaging sub-area away from the rotation axis 1, the imaging brightness of the multiple imaging sub-areas are equal. Therefore, by setting a display brightness of a display sub-area 21 close to the rotation axis 1 to be smaller than a display brightness of a display sub-area 21 away from the rotation axis 1, it can ensure that the imaging brightness of multiple imaging sub-areas are the same. Therefore, in this embodiment, the display brightness of the multiple display sub-areas 21 are increased sequentially along the first direction, that is, the display brightness of the display sub-area 21 close to the rotation axis 1 is smaller than the display brightness of the display sub-area 21 away from the rotation axis 1, thereby ensuring that imaging brightness of multiple imaging sub-areas are the same or within a preset brightness range. Parameters for controlling display brightness may include a gray value and a maximum brightness. In this embodiment, gray values or maximum brightness of multiple display sub-areas 21 may be gradually increased along the first direction.
Specifically, each of the display sub-areas 21 includes multiple sub-regions 214 (as shown in
The display sub-area 21 is further partitioned, and one driving-control module 4 is corresponding to one display sub-area 21. As shown in
Specifically, as shown in
According to data distribution characteristics of demo to be displayed in the rotation displaying, the display panel may be divided into multiple attention areas according to usage frequency of pixels. Therefore, usage frequencies of pixels in different attention areas are different. Circuit performance optimization processing is performed in an attention area with the highest usage frequencies of pixels. The driving-control unit in the attention area with the highest usage frequencies of pixels, has the least interference. Specifically, the display panel may be circular, elliptical or rectangular. The display panel may be divided into a core attention area 81 (as shown in
According to a second aspect of the present application, a display device is provided and includes the display panel provided in any of the above embodiments, and therefore includes all the beneficial effects of the display panel provided in any of the above embodiments, which will not be repeated here.
According to a third aspect of the present application, a method for driving a display panel is provided and may be applied to the display panel provided in any of the above embodiments. As shown in
S1: dividing a display panel into areas according to a division rule, where the division rule includes dividing the display panel into multiple display sub-areas 21 along a direction from a rotation axis 1 to a display area 2; wherein the display panel rotates around the rotation axis 1, the display area 2 is located on at least one side of the rotation axis 1; when the display panel rotates around the rotation axis 1, areas passed by the plurality of display sub-areas 21 form a plurality of imaging sub-areas;
S2: controlling the multiple display sub-areas 21 to have different display parameters, so that imaging brightness of the multiple imaging sub-areas are within a preset brightness range.
Two display areas 2 may be symmetrically arranged, that is, the two display areas 2 are located at two sides of the rotation axis 1. Then, the multiple display sub-areas 21 in the two display areas 2 are also symmetrically arranged with the rotation axis 1 as an axis of symmetry. Alternative, only one display area 2 is provided at one side of the rotation axis 1. In order to enable the display sub-areas 21 to have different display parameters, a driving-control module 4 is provided for each display sub-area 21. Each driving-control module 4 correspondingly controls one display sub-area 21, to enable various display sub-areas 21 to have different display parameters, so that the imaging brightness of multiple imaging sub-areas are within the preset brightness range.
Specifically, controlling the multiple display sub-areas 21 to have different display parameters in the step S2 specifically includes:
S11: controlling frame frequencies of the multiple display sub-areas 21, which are arranged sequentially along the direction from the rotation axis 1 to the display area 2, to increase sequentially, where the frame frequency is the display parameter.
In this way, by sequentially increasing the frame frequencies of the display sub-areas 21 arranged sequentially along the first direction, it can ensure that arrangement densities of voxels in multiple imaging sub-areas are the same, i.e., enabling imaging brightness of multiple imaging sub-areas to be the same.
Specifically, as shown in
S111: dividing each data source slice 7 into multiple sub-slices corresponding to the multiple display sub-areas 21;
S112: acquiring a second preset number of sub-slices corresponding to the frame frequency of the display sub-area 21 within a preset time period, and enabling the corresponding display sub-area 21 to sequentially display the second preset number of sub-slices.
DDR acquires the data source slice 7 through the communication module, and transmits the data source slice 7 to the partition module 6 under control of the display control module 9. The partition module 6 divides each data source slice 7 into multiple sub-slices corresponding to multiple display sub-areas 21. Within the preset time period, the number of data source slices 7 transmitted by DDR is the first preset number, and the number of sub-slices received by the driving-control module 4 is controlled by the frame frequency of the display sub-area 2 corresponding to the driving-control module 4.
Specifically, the display parameter is display brightness.
Specifically, controlling the multiple display sub-areas 21 to have different display parameters in the step S2 specifically includes:
S12: controlling display brightness of the multiple display sub-areas 21, which are arranged sequentially along the direction from the rotation axis 1 to the display area 2, to increase sequentially.
The above are merely the embodiments of the present disclosure and shall not be used to limit the scope of the present disclosure. It should be noted that, a person skilled in the art may make improvements and modifications without departing from the principle of the present disclosure, and these improvements and modifications shall also fall within the scope of the present disclosure. The protection scope of the present disclosure shall be subject to the protection scope of the claims.
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