Display device, display system, driving chip and display control method

Abstract

The application relates to a display device, a display system, a driving chip and a display control method. The display device comprises a control unit and a communication function unit; the communication function unit is connected with the control unit and each group of display partitions; the control unit adjusts the group sending rate of the communication function unit in response to the change of the frame frequency of an input dynamic picture, and obtains an adjusted group sending rate; the communication function unit sends display data to each group of display partitions in turn through the adjusted group sending rate, so that the refresh rate of completing the refresh of all groups of display partitions matches the frame frequency; wherein one group of display partitions comprises one or more display partitions. The embodiment of the application can realize the group refresh of each group of display partitions, match the refresh rate of the display panel with the frame frequency, realize VRR, and greatly reduce the transmission pressure of the communication channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lighting control, in particular to a display device, a display system, a driving chip and a display control method. BACKGROUND

[0002] Display devices such as liquid crystal display devices (LCD), organic light-emitting diode display devices (OLED) and quantum dot light-emitting diode display devices (QLED) include display driving chips (IC) for driving each display partition (such as each pixel) on a display panel according to image data.

[0003] The image content displayed by the display device is diverse, and each image can have a variable frame rate. Variable refresh rate (VRR) is a function of the display device that can significantly improve the viewing experience in various application scenarios such as games and movies. VRR technology allows the display device to dynamically adjust its refresh rate according to the frame rate of the input signal.

[0004] Currently, when the frame rate changes, the display driving IC needs to receive a configuration data set from the processor of the external host system for setting the register setting value inside the display driving IC for each output pin connected to the light-emitting element (such as LED). The register setting value includes the drive timing setting value of the digital logic circuit of the display driving IC, the voltage value, etc. Each time the frame rate changes, the configuration data set of all output pins needs to be transmitted once, so that the refresh rate of the display device also changes adaptively.

[0005] Therefore, when the frame rate dynamically changes, the configuration data set needs to be transmitted once for each frame rate, so that the communication data volume between the display driving IC and the processor of the external host system will be greatly increased. For example, the communication data volume of transmitting the configuration data set is basically equivalent to the communication data volume of transmitting the image data, so compared with the communication data volume of the image data that needs to be transmitted when the frame rate is fixed, the communication data volume when the frame rate dynamically changes is as much as 2 times. Therefore, this way of realizing VRR according to the configuration data set brings great transmission pressure to the communication channel. SUMMARY

[0006] Therefore, the embodiments of the present application provide a display device, a display system, a driving chip and a display control method to solve at least one problem in the background art.

[0007] In a first aspect, embodiments of the present application provide a display device, the display device comprising a control unit and a communication function unit; the communication function unit is connected with the control unit and connected with each group of display partitions respectively; the display device is used for displaying each frame of image of dynamic picture and / or static picture, the image comprises a plurality of groups of display data corresponding to a plurality of groups of display partitions respectively;

[0008] The control unit adjusts the packet sending rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted packet sending rate.

[0009] The communication function unit sends the display data to each group of display partitions in turn in units of groups through the adjusted packet sending rate, so that the refresh rate of completing the refresh of all groups of display partitions matches the frame frequency; wherein each group of display partitions comprises one or more display partitions.

[0010] In combination with the first aspect, in an optional implementation manner,

[0011] Each group of display partitions comprises one or more complete pixel rows and / or one or more incomplete pixel rows.

[0012] In combination with the first aspect, in an optional implementation manner,

[0013] The communication function unit sends the display data of each complete pixel row in turn in a predetermined order of complete pixel rows through the adjusted packet sending rate.

[0014] In combination with the first aspect, in an optional implementation manner,

[0015] The communication function unit comprises a plurality of groups of transmission channel groups; one group of transmission channel groups is connected with one group of display partitions;

[0016] Each group of transmission channel groups comprises one or more transmission channels; one transmission channel is connected with one display partition.

[0017] In combination with the first aspect, in an optional implementation manner,

[0018] The transmission channel comprises channel identification information; the channel identification information is used for indicating the position of the data segment corresponding to the transmission channel in the complete frame display data.

[0019] In combination with the first aspect, in an optional implementation manner,

[0020] The communication function unit sends each group of display data in units of groups to each group of display partitions in turn through the adjusted packet sending rate, which is obtained by grouping the complete frame display data through the channel identification information.

[0021] With reference to the first aspect, in an optional implementation,

[0022] The set of display partitions comprises group number information.

[0023] The control unit groups the complete-frame display data according to each set of display partitions through the channel identification information in response to input of the complete-frame display data of the dynamic picture, and corresponds each set of display data to the group number information.

[0024] With reference to the first aspect, in an optional implementation,

[0025] The control unit is configured to sequentially send, within the valid time period, signals containing the group number information of each set of display partitions to the communication function unit.

[0026] In the case where the communication function unit obtains one group number information, a set of display partitions corresponding to the one group number information is refreshed by a set of display data corresponding to the one group number information sent from the communication function unit.

[0027] The second aspect provides a display system, which comprises a master control device, a driving chip cascade circuit and a display panel.

[0028] The master control device comprises a control unit.

[0029] The driving chip cascade circuit comprises a communication function unit.

[0030] The display panel comprises a plurality of sets of display partitions, which are connected to the control unit and the communication function unit; and one set of display partitions comprises one or more display partitions.

[0031] The control unit adjusts a grouping and sending rate of the communication function unit in response to a change in a frame frequency of the input dynamic picture, to obtain an adjusted grouping and sending rate; and controls output of each set of display data and signals containing group number information from the master control device within a valid time period.

[0032] The communication function unit sequentially sends display data to each set of display partitions in a group unit according to the group number information and the adjusted grouping and sending rate, so that a refresh rate of the display panel matches the frame frequency.

[0033] With reference to the second aspect, in an optional implementation,

[0034] The display system further comprises a communication device.

[0035] The communication device is connected between the master device and the driving chip cascade circuit, and is configured to forward the display data and the signal containing the group number information in the order output by the master device.

[0036] In a third aspect, the embodiments of the present application provide a driving chip, which comprises a control unit and a communication function unit.

[0037] The communication function unit comprises a plurality of groups of transmission channels; each group of transmission channels is used to connect with a group of display partitions in all display partitions of a display panel; each group of transmission channels comprises one or more transmission channels; and each transmission channel is used to connect with one display partition.

[0038] The control unit adjusts the group transmission rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted group transmission rate.

[0039] The communication function unit transmits display data to each group of display partitions in turn in units of groups at the adjusted group transmission rate, so that the refresh rate of the display panel matches the frame frequency.

[0040] In a fourth aspect, the embodiments of the present application provide a display control method, which comprises:

[0041] Adjusting the group transmission rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted group transmission rate.

[0042] Controlling the communication function unit to transmit display data to each group of display partitions in turn in units of groups at the adjusted group transmission rate, so that the refresh rate of refreshing all groups of display partitions matches the frame frequency; wherein each group of display partitions comprises one or more display partitions.

[0043] In combination with the fourth aspect, in an optional implementation manner,

[0044] The control of the communication function unit to transmit display data to each group of display partitions in turn in units of groups at the adjusted group transmission rate comprises:

[0045] In the valid time period, the communication function unit is sequentially transmitted with each group of group data in a predetermined order, so that the communication function unit sequentially obtains each group of group data, and in the case that the communication function unit obtains one group number information, a group of display partitions corresponding to the one group number information is refreshed by display data corresponding to the one group number information transmitted from the communication function unit.

[0046] Each group of the grouped data includes a group of display data corresponding to a group of display partitions and a signal containing group number information corresponding to the group of display partitions.

[0047] In combination with the fourth aspect, in an optional implementation,

[0048] The display control method further includes:

[0049] In response to the input of the dynamic picture, the complete frame display data is grouped according to the display partitions to obtain the display data of each group, and / or the display data of each group is sorted according to the physical positions of the display partitions on the display panel to obtain the display data of each group in a predetermined order.

[0050] In combination with the fourth aspect, in an optional implementation,

[0051] In response to obtaining the connection signal of the display panel, the channel identification information of the transmission channel of the display panel is acquired.

[0052] The technical scheme provided by the display device of the embodiments of the present application has the beneficial effects that: the control unit adjusts the grouping transmission rate in response to the change of the frame frequency, and the communication function unit transmits the display data to each group of display partitions in turn using the adjusted grouping transmission rate, so that the grouping refresh of each group of display partitions can be realized while the refresh rate of the display panel matches the frame frequency. When the frame frequency changes, the configuration data set including the driving timing setting values of all the output pins of the driving chip and the like does not need to be transmitted, so that the refresh rate of the display panel matches the frame frequency, the VRR of the display device is realized, and the transmission pressure of the communication channel is greatly reduced, thereby preventing the performance and reliability problems.

[0053] The additional aspects and advantages of the embodiments of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the embodiments of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0054] The drawings described herein are used to provide further understanding of the present application, and form a part of the present application, in which the drawings are not necessarily drawn to scale, and some local features can be enlarged or reduced to more clearly show the details of the local features. The illustrative embodiments of the present application and their descriptions are used to explain the present application, and do not constitute an improper limitation on the present application. In the drawings:

[0055] Figure 1 A schematic diagram of a principle block diagram of a specific example of the display device in the embodiments of the present application;

[0056] Figure 2A schematic diagram of a specific example of a multi-frame period in an embodiment of the present application;

[0057] Figure 3 A schematic diagram of a principle block diagram of a specific example of a display system in an embodiment of the present application;

[0058] Figure 4 A schematic diagram of a principle block diagram of another specific example of a display system in an embodiment of the present application;

[0059] Figure 5 A schematic diagram of a principle block diagram of a specific example of a driving chip in an embodiment of the present application;

[0060] Figure 6 A schematic diagram of a flow of a specific example of a display control method in an embodiment of the present application;

[0061] Figure 7 A schematic diagram of a principle block diagram of a specific example of a driving chip cascade string group in an embodiment of the present application. DETAILED DESCRIPTION

[0062] In order to make the technical solutions and advantages of the present application more obvious and easy to understand, the following will be described in detail by way of listing specific embodiments. The drawings are not necessarily drawn to scale, and local features can be enlarged or reduced to more clearly show the details of local features; unless otherwise defined, the technical and scientific terms used herein have the same meaning as the technical and scientific terms in the technical field to which the present application belongs.

[0063] The embodiments of the present application are not exhaustive, but only illustrate some embodiments, and are not specific limitations on the protection scope of the present application. In the case of no contradiction, each step in an embodiment can be implemented as an independent embodiment, and the steps can be combined arbitrarily, for example, the scheme after removing some steps in an embodiment can also be implemented as an independent embodiment, and the order of the steps in an embodiment can be exchanged arbitrarily, in addition, the optional implementation manners in an embodiment can be combined arbitrarily; in addition, the embodiments can be combined arbitrarily, for example, the steps of different embodiments or part of the steps of different embodiments can be combined arbitrarily, an embodiment can be combined with the optional implementation manners of other embodiments.

[0064] In each embodiment of the present application, the terms and / or descriptions of the embodiments are consistent and can be referred to each other if there is no special description and logical conflict, and the technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0065] The terms used in the embodiments of the present application are only for the purpose of describing specific embodiments, and not as a limitation on the present application.

[0066] In the embodiments of the present application, an element expressed in singular form, such as "a", "an" and "the" unless specifically limited, can represent "one or more", "at least one" or the like.

[0067] In some embodiments, the terms "at least one", "one or more", "a plurality of" and the like can be replaced with each other.

[0068] The prefix words "first", "second" and the like in the embodiments of the present application are only used to distinguish different description objects, and do not constitute limitation on the position, order, priority, value or content of the description objects. The description of the description objects is referred to the description in the context of the embodiments, and should not be limited by the use of the prefix words. For example, the value of the description object is not limited by the ordinal number, and can be one or more. For example, the value of "the first device" can be one or more. In addition, the objects modified by different prefix words can be the same or different, for example, the description object is "device", and "the first device" and "the second device" can be the same device or different devices, and the types thereof can be the same or different.

[0069] In some embodiments, the term "and / or" can indicate at least one of the items defined by the term, for example, "A and / or B" can indicate implementation as "A", or implementation as "A", or implementation as "A and B".

[0070] In some embodiments, the term "connected" or "coupled" can mean that there is a mutual transmission of electrical signals or data between the connected ends, and can be understood as "electrically connected" or "electrically coupled", "communication connected" or "communication coupled", and the like. The "connection" or "coupling" can be a direct connection between two components, or an indirect connection established through other components, or a communication between two components, or any other possible connection.

[0071] The present specification provides method operation steps such as embodiments or flowcharts, but more or fewer operation steps can be included based on conventional or non-inventive labor. The order of steps listed in the embodiments is only one of the many execution orders of the steps, and does not represent the only execution order. When the device, system or server product is executed in practice, the method order shown in the embodiments or the drawings can be executed in sequence or in parallel (for example, in a parallel processor or a multi-thread processing environment).

[0072] In the process of implementing the present application, the inventors found that there are the following problems in the process of implementing VRR:

[0073] When the frame frequency is fixed, the display driving IC can control the data update of each output pin connected with the light emitting element according to the pre-configured register setting value.

[0074] However, when the frame frequency dynamically changes, in order to adapt to such dynamic changes, the display driving IC needs to receive a configuration data set from the processor of the external host system to change the register setting value inside the display driving IC. Then, the display driving IC controls the output pin data update according to the changed register setting value, so as to realize VRR.

[0075] Therefore, this way of realizing VRR according to the configuration data set brings great transmission pressure to the communication channel. More than that, if the frame frequency continuously changes, since the communication channel resources need to be frequently occupied to transmit the configuration data set, the communication channel will be in a high load state of great transmission pressure for a long time during the frame frequency continuously changes. In summary, this way of realizing VRR will bring great transmission pressure to the communication channel, and also cause signal attenuation, signal-to-noise ratio reduction and other performance degradation and reliability problems.

[0076] Therefore, the present application provides a VRR implementation scheme, which can reduce the transmission pressure of the communication channel.

[0077] In the embodiments of the present application, the display device or the display system can include a display panel, and the display panel includes array distributed LEDs. For example, the display device or the display system can be implemented as a liquid crystal display device (LCD), an organic light emitting diode display device (OLED), a quantum dot light emitting diode display device (QLED), a low temperature polycrystalline oxide display device (LTPO), or the like.

[0078] The term "LED" can refer to any system capable of receiving a signal and producing light in response to the signal. Thus, the term "LED" can be understood to include all types of light emitting diodes, light emitting polymers, semiconductor dies that produce light in response to current, organic LEDs, electroluminescent strips, light emitting silicon-based structures, and other such systems. In some examples, an "LED" can refer to a single light emitting diode package having multiple semiconductor dies that are individually controlled. It should be understood that the term "LED" does not limit the package type of the LED. The term "LED" can include packaged LEDs, non-packaged LEDs, surface mount LEDs, chip-on-board LEDs, and all other configurations of LEDs. The term "LED" can also include LEDs that are packaged with a phosphor or that are associated with a phosphor, where the phosphor can convert energy from the LED to a different wavelength. In some examples, an LED can be implemented as an RGB LED, and the RGB LED can include a red LED, a green LED, and a blue LED. In addition, an LED can include a white LED in addition to the RGB LED. In some examples, an LED can be implemented as a Mini LED, for example, a Mini LED can be an LED using a size of 100 to 200 micrometers. In some examples, an LED can be implemented as a Micro LED, using a self-emitting technology.

[0079] The LED is connected with an output pin of a driving chip. The driving chip drives the display of the LED according to display data of an input image or a dynamic picture, so that the display panel visually reproduces the input image or the dynamic picture.

[0080] Embodiments of the present application provide a display device, which can be used to implement the VRR implementation scheme of the present application. Figure 1 A principle block diagram of a specific example of a display device in embodiments of the present application is shown, as shown in the figure, the display device includes a control unit 101 and a communication function unit 102; the communication function unit 102 is connected with the control unit 101 and connected with each group of display partitions respectively; the display device is used to display each frame of image of a dynamic picture and / or a static image, the image includes a plurality of groups of display data corresponding to a plurality of groups of display partitions respectively;

[0081] The control unit 101 adjusts the packet sending rate of the communication function unit 102 in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted packet sending rate;

[0082] The communication function unit 102 sends the display data to each group of display partitions in turn in units of groups through the adjusted packet sending rate, so that the refresh rate of completing the refresh of all groups of display partitions matches the frame frequency; wherein a group of display partitions includes one or more display partitions.

[0083] Thus, by the display device of the embodiments of the present application, the control unit adjusts the packet sending rate in response to the change of the frame frequency, and the communication function unit sends display data to each group of display partitions in turn using the adjusted packet sending rate, so that the group refresh of each group of display partitions is realized at the same time, and the refresh rate of the display panel is matched with the frame frequency. When the frame frequency changes, the refresh rate of the display panel is matched with the frame frequency without the need to transmit a configuration data set including the driving timing setting values of all the output pins of the driving chip and the like, so that the VRR of the display device is realized, thereby greatly reducing the transmission pressure of the communication channel and preventing the performance and reliability problems in many aspects.

[0084] In the embodiments of the present application, the control unit and the communication function unit can be implemented by software and / or hardware.

[0085] The dynamic picture can include a video stream, a real-time rendering picture, etc.

[0086] The frame frequency (or frame rate, frame frequency, Frame Rate) can refer to the number of frames displayed per unit time (such as per second), and is used to describe the update rate of the dynamic picture per unit time, which is determined by the dynamic picture generation end (such as a camera, a game engine, etc.).

[0087] The packet sending rate of the communication function unit can refer to the number of groups of display data transmitted per unit time. Sending display data (or each group of display data) to each group of display partitions in turn in groups can be sending one group of display data to one group of display partitions at a time, and the sending order can be the order obtained after grouping and sorting the complete frame display data according to the physical lighting order of each group of display partitions on the display panel, but is not limited thereto.

[0088] The packet sending rate can be determined according to the frame frequency, so that the refresh rate of the display device (display panel) when all the group display partitions are completed is matched with the frame rate. Accordingly, those skilled in the art can know various specific calculation methods for calculating the packet sending rate, which are not described in detail in the present application. Completing the entire refresh of each group of display partitions once is completing the refresh of the display device once.

[0089] The display partition obtains display data once, which corresponds to completing the refresh of the display partition once. The time required to complete the refresh of all the group display partitions (or the display panel) once can be a period. The reciprocal of the period can be the refresh rate.

[0090] Therefore, in the embodiment of the present application, the communication function unit adjusts the sending rate of the display data packet every time the frame frequency of the dynamic picture changes, and the refresh rate of the display partition is also adjusted, so that the refresh rate of the display panel is also adjusted, and the refresh rate of the display device can be adapted to the change of the frame frequency, thereby realizing VRR.

[0091] In the embodiment of the present application, the change of the frame frequency can include a change from the first frame frequency to the second frame frequency, or a change from the second frame frequency to the first frame frequency. The first frame frequency is less than the second frame frequency. For example, the first frame frequency is 60 Hz, and the second frame frequency is 120 Hz, but the present application is not limited thereto.

[0092] The complete frame display data (or referred to as one frame of display data) can be divided into a plurality of groups according to the grouping of the display partitions, and can be sent to the display partitions in turn in a group unit. One group of display data corresponds to one group of display partitions, or in other words, one group of display data can be used to drive the display of one group of display partitions. One display partition can include one or more LEDs. For example, the display screen can include one display device or a plurality of display devices. The content displayed in the display screen can be each frame of image of the dynamic picture displayed by the plurality of groups of display partitions, or can be a static image displayed by the plurality of groups of display partitions; or the above two kinds of images can be displayed simultaneously in the display screen, in other words, part of the content displayed in the display screen can be a dynamic picture, and VRR can be realized, and the other part of the content can be a static image.

[0093] In an optional embodiment, each group of display partitions includes one or more complete pixel rows and / or one or more incomplete pixel rows.

[0094] In some examples, with reference to Figure 1 The display panel 103 is divided into a plurality of partitions (or referred to as display partitions) distributed in a physical row-column manner, which is an m*n partition array, i.e., partition 11, partition 12, …, partition 1n, partition 21, partition 22, …, partition 2n, …, partition m1, partition m2, …, partition mn. Each partition can include one or more pixels. The pixels can represent colors by RGB (red, green, and blue) three primary colors, or can also include white color, etc. The number of pixels contained in any two partitions can be the same or different. m and n can be natural numbers greater than 0.

[0095] Therefore, Figure 1The display panel has m groups of display partitions, i.e., the first group of display partitions 3-1, the second group of display partitions 3-2, …, and the mth group of display partitions 3-m. Each group of display partitions includes a complete pixel row. In this way, by sequentially sending display data to each complete pixel row, the display panel can be physically driven to display (light up) row by row. For example, when the display panel is driven to display row by row and the row scanning sequence of the LCD liquid crystal is consistent, the backlight and the corresponding liquid crystal row can be synchronously switched, thereby improving the synchronization and display contrast.

[0096] It should be understood that one incomplete pixel row includes one or more consecutive partial pixels in a complete pixel row. Then, one complete pixel row can be composed of a plurality of incomplete pixel rows that are physically located in the same row. The number of pixels included in any two incomplete pixel rows can be the same or different.

[0097] Any two complete pixel rows (or incomplete pixel rows) can be physically adjacent rows or non-adjacent rows.

[0098] In an optional embodiment, the communication function unit sequentially sends the display data of each complete pixel row in a predetermined order of the complete pixel rows by adjusting the sending rate of the group.

[0099] In the embodiments of the present application, the display data of all complete pixel rows constitutes complete frame display data.

[0100] The predetermined order of the complete pixel rows can be set according to actual needs. For example, referring to Figure 1 , the predetermined order of the complete pixel rows is the order from top to bottom of the physical row partitions of the display panel 103. In this way, the communication function unit sequentially sends the display data row by row, thereby achieving row-by-row refreshing of the display panel 103, and the refreshing rate of the display panel matches the frame frequency.

[0101] In an optional embodiment, the communication function unit includes a plurality of groups of transmission channels; one group of transmission channels is connected to one group of display partitions;

[0102] Each group of transmission channels includes one or more transmission channels; one transmission channel is connected to one display partition.

[0103] In some examples, one transmission channel can correspond to one output pin of the driving chip, such as one transmission channel can include one or more of an output pin (e.g., marked with channel identification information) of the driving chip, a register connected to the output pin, a switch, a resistor, a capacitor, and the like. The register can store timing setting values and the like; the switch can control the on-off of the transmission channel; the resistor, capacitor, and the like can adjust the output impedance and other channel parameters of the transmission channel.

[0104] In some examples, the communication function unit can include one or more of a plurality of transmission channels, a logic circuit (or programmable), a processor, a memory, etc. The programmable logic circuit or processor can run program instructions stored in the memory to implement gating, timing output, etc. of the transmission channels.

[0105] In an optional embodiment, the transmission channel includes channel identification information; the channel identification information is used to indicate the position of the data segment corresponding to the transmission channel in the complete frame display data.

[0106] In the embodiments of the present application, the transmission channel is identified by the channel identification information, and the position of the data segment corresponding to the transmission channel in the complete frame display data is indicated by the channel identification information. In this way, the display data of the complete frame can be grouped and sorted according to the order of the physical positions of each group of display partitions on the display panel according to the channel identification information, so that each group of display data can be sent in turn according to the predetermined lighting order of each group of display partitions by a grouping sending rate matched with the frame frequency, thereby realizing VRR while greatly reducing the transmission pressure of the communication channel.

[0107] In some examples, the channel identification information includes a channel identifier.

[0108] The channel identifier can include letters (such as A, a, etc.), numbers (such as 1, 2, etc.), symbols (such as underscore "_", punctuation marks "!","@", etc., connector "-", etc.).

[0109] In the embodiments of the present application, the channel identifier can use different names, such as channel number, channel address, etc., and the name is not limited here.

[0110] In some examples, the channel identification information can be stored in a storage unit inside the driving chip, so that the configuration speed of the channel identification information can be significantly improved, the process of initializing and setting the transmission channel parameters is simplified, and the processing speed of initialization and setting is improved. Alternatively, the channel identification information can also be stored in a storage unit arranged at other positions, such as a display panel outside the driving chip, etc., and the present application does not limit this.

[0111] In an optional embodiment, each group of display data sent in turn by the communication function unit to each group of display partitions in a group unit through the adjusted grouping sending rate is obtained by grouping the complete frame display data through the channel identification information.

[0112] In the embodiments of the present application, the complete frame display data can be grouped (grouped and sorted) into multiple groups according to the grouping of the display partitions through the channel identification information, so that the communication function unit can sequentially send the grouped (one group after another) display data to each group of display partitions in units of groups, and the display panel grouping refresh can be realized accordingly, while greatly reducing the transmission pressure of the communication channel and realizing VRR.

[0113] In an optional embodiment, the group of display partitions includes group number information.

[0114] In some examples, the control unit groups the complete frame display data according to the grouping of the display partitions through the channel identification information in response to the input of the complete frame display data of the dynamic picture, and each group of display data corresponds to the group number information.

[0115] In the embodiments of the present application, each group of display data obtained after grouping the complete frame display data can correspond to the group number information of each group of display partitions one by one. In other words, each group of display data is marked by a group number information.

[0116] The group of display partitions includes group number information, and in other words, each group of display partitions is marked by a group number information, and one group of display partitions corresponds to one group number information.

[0117] In some examples, the group number information can include letters (such as A, a, etc.), numbers (such as 1, 2, etc.), symbols (such as underscores “_”, punctuation marks “!”, “@”, etc., and connectors “-”, etc.).

[0118] In an optional embodiment, the control unit is configured to sequentially send, within the effective time period, signals containing the group number information of each group of display partitions to the communication function unit.

[0119] In the case where the communication function unit obtains one group number information, the group of display partitions corresponding to the one group number information is refreshed by the group of display data corresponding to the one group number information sent from the communication function unit.

[0120] In the embodiments of the present application, when the display refresh of one group of display partitions is realized, the group number information is transmitted between the control unit and the communication function unit, and the data refresh of one group of display partitions is controlled through the group number information. The control unit can control the time when each group of display partitions obtains display data through the group number information, and in other words, the time when each group of display partitions refreshes the display, thereby improving the orderliness and refresh time accuracy of the sequential refresh of each group of display partitions. Moreover, by only transmitting the group number information, the amount of communication data is reduced, and the transmission pressure of the communication channel can be reduced.

[0121] With reference to the comparative example, when the frame frequency dynamically changes, the control unit needs to transmit the configuration data set of all transmission channels in the communication function unit. Therefore, in the comparative example, the amount of communication data between the control unit and the communication function unit will greatly increase. In comparison, according to the embodiment of the application, the control unit only needs to transmit the group number information. Therefore, because the transmission of the configuration data set is avoided, the transmission of the group number information can also reduce the amount of communication data and reduce the transmission pressure of the communication channel.

[0122] Figure 2 A schematic diagram showing a specific example of a multi-frame period in an embodiment of the application is shown. Referring to Figure 2 , a frame period (1 frame) can correspond to an image frame in a dynamic picture, which can be determined according to a synchronization signal S1. The interval period can be a time in the frame period other than the active period AT. In some examples, the display device can display an image in the active period AT and not display an image in the interval period.

[0123] In some examples, all display data (complete frame display data) sent to each group of display partitions in turn is sent in the active period AT. Referring to Figure 2 , the multiple groups of display data corresponding to each group of display partitions, such as the 3-1, 3-2, …, 3-m data segments in the complete frame display data, correspond to the 1st group of display partitions 3-1, the 2nd group of display partitions 3-2, …, and the mth group of display partitions 3-m, respectively, and are sent in the active period AT.

[0124] In some examples, the control unit sends a signal containing group number information corresponding to the group of display data to the communication function unit each time it sends a group of display data to the communication function unit. Then, the communication function unit can trigger the transmission channel corresponding to the obtained group number information to send the group of display data in response to obtaining each group number information, so that the group of display partitions corresponding to the obtained group number information obtains the group of display data and occurs display refresh. The group number information can be used to specify the target to which a group of display data needs to be sent, i.e., the target group of display partitions.

[0125] The embodiment of the application also provides a display system, which can be used to implement the VRR implementation scheme of the application. Figure 3 A principle block diagram schematic diagram showing a specific example of a display system in an embodiment of the application is shown, as shown in the figure, the display system includes a master control device 301, a driving chip cascade circuit 302, and a display panel 103;

[0126] The master control device 301 includes a control unit;

[0127] The driving chip cascade circuit 302 includes a communication function unit;

[0128] The display panel 103 comprises a plurality of groups of display partitions, and the communication function unit, the control unit and the display partitions are connected; one group of display partitions comprises one or more display partitions;

[0129] The control unit adjusts the packet transmission rate of the communication function unit in response to a change in the frame frequency of the input dynamic picture, to obtain an adjusted packet transmission rate; and controls the output of each group of display data and signal containing group number information from the master control device 301 within the effective time period.

[0130] The communication function unit sends display data to each group of display partitions in turn in groups according to the adjusted packet transmission rate based on the group number information, so that the refresh rate of the display panel 103 matches the frame frequency.

[0131] In this way, the display system can adapt to changes in the frame frequency while refreshing in groups, change the refresh rate, and realize VRR; while realizing VRR, the transmission pressure of the communication channel is greatly reduced, and the performance and reliability problems of the communication channel are prevented.

[0132] Reference Figure 3 The driving chip cascade circuit 302 is arranged on the surface of the display panel 103 opposite to each partition. For example, each partition is arranged on the front surface of the display panel 103, and the driving chip cascade circuit 302 is arranged on the back surface.

[0133] In the embodiments of the present application, the driving chip cascade circuit can comprise one or more driving chip cascade string groups. Each driving chip cascade string group can comprise one or more driving chips connected in cascade. For example, the communication function unit can comprise transmission channels of all the driving chips. The transmission channel can comprise output pins of the driving chips, registers connected to the output pins, switches, resistors, capacitors and the like. Reference Figure 1 and Figure 3 The communication function unit comprises m groups of transmission channel groups, which are connected one by one with the first group of display partitions 3-1, the second group of display partitions 3-2, …, and the mth group of display partitions 3-m. Alternatively, the communication function unit can also comprise hardware circuits with data selection, timing output and the like, or processors with signal processing capabilities, which can be set as needed.

[0134] Figure 4 Another principle block diagram of another specific example of a display system in the embodiments of the present application is shown, as shown in the figure, in an optional embodiment, the display system further comprises a communication device 304;

[0135] The communication device 304 is connected between the master device 301 and the driving chip cascade circuit 302, and is configured to forward the display data groups and the signals containing group number information in the order output by the master device 301.

[0136] In the embodiments of the present application, the forwarding function of the communication device can be implemented by directly forwarding the output without changing the order of the input data of the communication device, in other words, the order of the output data is consistent with the order of the input data.

[0137] The communication device can forward the display data groups in order and / or forward all the display data groups (complete frame display data) and the signals containing group number information in order. Then, the communication function unit obtains a group number information and a group of display data, and sends the group of display data to a group of display partitions according to the group number information; or the communication function unit obtains all the display data groups, and sends a group of display data to a group of display partitions according to the group number information in the case of obtaining a group number information, at this time, all the display data groups obtained by the communication function unit can be in a predetermined order (see the above), or can not be in a predetermined order, that is, the order can not be required.

[0138] In some examples, the display data groups can be in a predetermined order. And / or, the order of each group number information content (signals containing group number information) sent by the control unit is the predetermined order of the display data groups. In this way, it can be ensured that the order of updating the data of the display partitions is consistent with the predetermined order, and the refresh order of the display partitions can be flexibly set. And the communication device does not need to recombine or adjust the data, which reduces the display delay.

[0139] In the embodiments of the present application, the driving chip cascade string group is mainly composed of driving chip cascade connection. The connection mode of the driving chip can be set according to actual needs.

[0140] As a specific example, the driving chip cascade string group can include driving chips connected in sequence and end-to-end to form a cascade string; at this time, the signal transmission link in the driving chip cascade string group is in one-dimensional form, and the signal is transmitted in a single direction in sequence, for example, from the first driving chip to the last driving chip, and the signal needs to be transmitted through all the driving chips in the driving chip cascade string group.

[0141] As another specific example, the driving chip cascade string group can include a first driving chip string group and a plurality of second driving chip string groups, wherein:

[0142] The first driving chip string group includes a plurality of first driving chips connected in sequence;

[0143] Each second driving chip string group comprises a plurality of second driving chips connected in series, wherein any second driving chip in each second driving chip string group is connected with a first driving chip in the first driving chip string group.

[0144] For example, the connection in series can mean that the first driving chips are connected one by one in a head-to-tail manner to form a continuous path from the first driving chip at the head to the first driving chip at the tail.

[0145] With reference to Figure 7 The driving chip cascade string group can be connected with one or more second driving chip string groups for each first driving chip in the first driving chip string group, and the second driving chip at the end of at least one second driving chip string group is connected with a first driving chip in the first driving chip string group.

[0146] The number of second driving chips included in the plurality of second driving chip string groups can be the same or different.

[0147] At this time, the signal transmission link in the driving chip cascade string group is in a two-dimensional form or a two-dimensional or higher form, and the signal is sequentially transmitted in at least two directions, for example, the longest cascade number can be m+n-1. In this way, the cascade number of the driving chip is greatly reduced, the signal transmission distortion is reduced, and the number of interfaces of the display communication unit (such as a control chip) does not need to be increased, the number of wirings is reduced, and the wiring difficulty is reduced.

[0148] With reference to Figure 7 Any first driving chip in the driving chip cascade string group is connected with a communication device, and the plurality of communication devices are connected. In some examples, the master control device can be connected with any one of the plurality of communication devices. Alternatively, in other examples, the master control device can be connected with each communication device.

[0149] The application further provides a driving chip which can be used to implement the VRR implementation scheme of the application. Figure 5 A principle block diagram of a specific example of a driving chip in the embodiment of the application is shown, as shown in the figure, the driving chip comprises a control unit 101 and a communication function unit 102;

[0150] The communication function unit 102 comprises a plurality of groups of transmission channels; one group of transmission channels is used to be connected with one group of display partitions in all display partitions of a display panel; each group of transmission channels comprises one or more transmission channels; one transmission channel is used to be connected with one display partition;

[0151] The control unit 101 adjusts the packet sending rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted packet sending rate;

[0152] The communication function unit 102 sends display data to each group display area in turn in a group unit by adjusting the sending rate of the group, so that the refresh rate of the display panel matches the frame frequency.

[0153] In this way, the driving chip can make the display device or display system adapt to the change of the frame frequency while realizing group refresh, change the refresh rate, and realize VRR. At the same time, the VRR greatly reduces the transmission pressure of the communication channel and prevents the performance and reliability of the communication channel from being reduced.

[0154] In the present application, the control unit can include a processor.

[0155] In the present application, the processor can be a circuit with signal processing capability. In one implementation, the processor can be a circuit with instruction reading, interpretation, execution and processing capability, such as a central processing unit (CPU), a microprocessor, a graphics processing unit (GPU) (which can be understood as a microprocessor), or a digital signal processor (DSP), etc. In another implementation, the processor can realize certain functions through the logical relationship of hardware circuits, and the logical relationship of the above hardware circuits is fixed or can be reconfigured. For example, the processor is a hardware circuit realized by an application-specific integrated circuit (ASIC) or a programmable logic device (PLD), such as an FPGA. In a reconfigurable hardware circuit, the processor loads a configuration document to realize the configuration of the hardware circuit. It can be understood that the processor loads instructions to realize the above functions. In addition, the processor can also be a hardware circuit designed for artificial intelligence, which can be understood as an ASIC, such as a neural network processing unit (NPU), a tensor processing unit (TPU), a deep learning processing unit (DPU), etc.

[0156] The present application also provides a display control method, which can be used to realize the VRR implementation scheme of the present application. Figure 6 A flowchart of a specific example of a display control method in an embodiment of the present application is shown, as shown in the figure, the display control method can be applied to a control unit, including:

[0157] Step S601: adjusting the packet sending rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted packet sending rate;

[0158] Step S602: controlling the communication function unit to send display data to each group of display partitions in turn in a group unit through the adjusted packet sending rate, so that the refresh rate of refreshing all group display partitions is matched with the frame frequency; one group of display partitions includes one or more display partitions.

[0159] In this way, each group of display partitions can be refreshed in groups, and the refresh rate of the display panel can be matched with the frame frequency. When the frame frequency changes, the display panel realizes VRR while greatly reducing the transmission pressure of the communication channel.

[0160] In an optional embodiment, the control of the communication function unit to send display data to each group of display partitions in turn in a group unit through the adjusted packet sending rate in step S602 includes:

[0161] Step S6021: sending each group of packet data to the communication function unit in turn according to a predetermined order within an effective time period, so that the communication function unit obtains each group of packet data in turn, and each group of display partitions corresponding to one group number information is refreshed by one group of display data corresponding to the one group number information sent from the communication function unit when the communication function unit obtains the one group number information.

[0162] Each group of packet data includes one group of display data corresponding to one group of display partitions and a signal containing group number information corresponding to the one group of display partitions.

[0163] In this way, not only can the group refresh of each group of display partitions adapt to the change of the frame frequency to realize VRR, but also can reduce the amount of communication data, reduce the transmission pressure of the communication channel, and improve the orderliness and refresh time accuracy of the sequential refresh of each group of display partitions.

[0164] It should be understood that in other optional embodiments, the control of the display partition to refresh and display in step S6021 can also not be controlled by the group number information, but other control methods can also be used.

[0165] For example, each group of display data of each group of display partitions can be sent to the communication function unit in turn according to a predetermined order within an effective time period, so that the communication function unit obtains each group of display data in turn, and each group of display data is directly or timely output once each time, thereby being output to each group of display partitions in turn.

[0166] In an optional embodiment, the display control method further includes:

[0167] Step S603: In response to the input of a dynamic image, the complete frame display data is grouped according to each display partition using channel identification information to obtain each group of display data, and / or sorted according to the physical position of each group of display partitions on the display panel to obtain each group of display data in a predetermined order. This enables the display panel to drive the display line by line, and also ensures consistency with the line scanning sequence of the LCD, achieving synchronous switching of backlight and corresponding LCD lines, improving synchronization and display contrast.

[0168] In an optional embodiment, the display control method further includes:

[0169] Step S604: In response to receiving the connection signal of the display panel, obtain the channel identification information of the transmission channel of the display panel.

[0170] In this embodiment, the connection signal of the display panel can be set according to the interface structure or connection confirmation mechanism of the display device or display system. For example, the connection signal can be a connection success confirmation signal that responds to the connection inquiry signal sent by the display panel feedback control unit.

[0171] In this application, the control unit may include:

[0172] Memory, which stores instructions; and

[0173] A processor configured to execute the instructions to implement the display control method as described in the above embodiments.

[0174] In this application, electronic equipment may also be referred to as a display device, display system, etc., and the name is not limited here. Electronic equipment includes at least LEDs and functional units with the function of driving LED displays, such as control units, communication functional units, etc. For example, electronic equipment may include control units.

[0175] This electronic device may include a processor, memory, communication interface, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The communication interface is used for communication with external devices. The input devices may be a touch layer covering the display panel, buttons, a trackball, or a touchpad on the device's casing, or an external keyboard, touchpad, or mouse.

[0176] The following describes the data processing flow when an electronic device displays a screen.

[0177] When a frame of image, for example, the Nth frame of image, needs to be displayed, the electronic device can first perform a frame frequency operation for the Nth frame of image. The frame frequency operation is a process in which a processor in the electronic device determines the number of frames obtained per unit time according to display data (or image data) of a plurality of continuous frames of image obtained within a predetermined time. For example, the frame frequency operation can determine whether the frame frequency changes when the Nth frame of image is obtained and the corresponding frame frequency according to a plurality of continuous frames of image, for example, the N-2th frame of image, the N-1th frame of image, the Nth frame of image, and the like.

[0178] After the frame frequency operation, the electronic device can perform a packet transmission rate operation for the Nth frame of image. The packet transmission rate operation is a process in which the processor in the electronic device keeps the packet transmission rate unchanged when the frame frequency does not change, and determines the number of groups of display data of packets transmitted per unit time according to the changed frame frequency value when the frame frequency changes. For example, the electronic device can perform the packet transmission rate operation when the frame frequency changes, that is, whether the frame frequency increases or decreases. If the frame frequency changes when the Nth frame of image is obtained, the packet transmission rate needs to be re-operated for the Nth frame of image.

[0179] After the packet transmission rate operation is performed for the Nth frame of image, the electronic device can perform a display data transmission process. The display data transmission process is a process in which each functional unit in the electronic device sequentially transmits a plurality of groups of display data in a group unit to a plurality of groups of display partitions according to the packet transmission rate.

[0180] Subsequently, the electronic device can perform a display validation process for the Nth frame during the process of displaying the Nth frame of image. The display validation process is a process in which the electronic device controls the sequential output of each group of display data in a group unit to make each group of display partitions sequentially obtain the display data of the corresponding group to perform display refresh.

[0181] In addition, while the packet transmission rate operation process is performed for the Nth frame of image, the electronic device can perform a frame frequency operation for the next frame of the Nth frame of image, that is, the N+1th frame. Also, while the display data transmission process is performed for the Nth frame, the electronic device can also perform a packet transmission rate operation process for the N+1th frame.

[0182] Therefore, after the display validation process is performed for the Nth frame, the electronic device can immediately perform the display validation process for the N+1th frame. Therefore, the electronic device can realize the continuous display of a plurality of frames of image.

[0183] It should be understood that the above examples are exemplary and are not intended to limit all possible implementations encompassed by the present application. Various modifications and alterations of the above embodiments can also be made without departing from the scope of the present disclosure. Similarly, each of the individual features of the above embodiments can be arbitrarily combined to form additional embodiments of the present application that can not be explicitly described. Therefore, the above examples merely express several embodiments of the present application and do not limit the scope of protection of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises a control unit and a communication function unit; the communication function unit is connected with the control unit and connected with multiple groups of display partitions respectively; the display device is used for displaying each frame of image of dynamic picture and / or static image, and the image comprises multiple groups of display data corresponding to the multiple groups of display partitions respectively; The control unit adjusts the group sending rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted group sending rate; The communication function unit sends the display data to each group of display partitions in turn in units of groups through the adjusted group sending rate, so that the refresh rate of completing the refresh of all groups of display partitions matches the frame frequency; wherein one group of display partitions comprises one or more display partitions; The one group of display partitions comprises group number information; The control unit groups the complete frame display data according to each group of display partitions through the channel identification information in response to the input of the complete frame display data of the dynamic picture, and corresponds each group of display data to the group number information; The control unit is configured to output the signals containing the group number information of each group of display partitions from the communication function unit in turn within an effective time period; In the case that the communication function unit obtains one group number information, the group of display partitions corresponding to the one group number information is refreshed by the one group of display data corresponding to the one group number information sent from the communication function unit.

2. The display device according to claim 1, wherein The display device comprises at least one of the following: Each group of display partitions comprises one or more complete pixel rows and / or one or more incomplete pixel rows; The communication function unit sends the display data of each complete pixel row in a predetermined order of complete pixel rows through the adjusted group sending rate; The communication function unit comprises multiple groups of transmission channel groups; one group of transmission channel groups is connected with one group of display partitions; each group of transmission channel groups comprises one or more transmission channels; One transmission channel is connected with one display partition; The transmission channel of the communication function unit comprises channel identification information; the channel identification information is used for indicating the position of the data segment corresponding to the transmission channel in the complete frame display data; The group display data sent by the communication function unit to each group of display partitions in turn in units of groups is obtained by grouping the complete frame display data through the channel identification information.

3. A display system characterized by, The display system comprises a master control device, a driving chip cascade circuit and a display panel; The master control device comprises a control unit; The driving chip cascade circuit comprises a communication function unit; The display panel comprises multiple groups of display partitions, which are connected with the control unit and the display partitions through the communication function unit; one group of display partitions comprises one or more display partitions; The control unit adjusts the group sending rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted group sending rate; and controls the output of each group of display data and the signals containing the group number information from the master control device within an effective time period. The communication function unit sends display data to each group of display partitions in turn according to the group number information and the adjusted group sending rate, so that the refresh rate of the display panel matches the frame frequency. The group of display partitions comprises group number information. The control unit groups the complete frame display data of the dynamic picture according to each group of display partitions through the channel identification information in response to input of the complete frame display data, and corresponds each group of display data to the group number information. The control unit is configured to send the signals comprising the group number information of each group of display partitions to the communication function unit in turn within the valid time period. In the case that the communication function unit obtains one group number information, a group of display partitions corresponding to the one group number information is refreshed by a group of display data corresponding to the one group number information sent from the communication function unit.

4. The display system of claim 3, wherein The display system further comprises a communication device. The communication device is connected between the master control device and the driving chip cascade circuit, and is configured to forward the groups of display data and the signals comprising the group number information in the order output by the master control device.

5. The display system of claim 3 or 4, wherein The driving chip cascade circuit comprises one or more driving chip cascade string groups; each driving chip cascade string group comprises one or more driving chips connected in cascade; The driving chip cascade string group comprises driving chips connected in cascade in sequence. And / or, the driving chip cascade string group comprises a first driving chip string group and a plurality of second driving chip string groups; the first driving chip string group comprises a plurality of first driving chips connected in series in sequence; each second driving chip string group comprises a plurality of second driving chips connected in series in sequence, wherein any second driving chip in each second driving chip string group is connected to a first driving chip in the first driving chip string group.

6. A driving chip, characterized by, The driving chip comprises a control unit and a communication function unit. The communication function unit comprises a plurality of transmission channel groups; one transmission channel group is used to connect to one group of display partitions in all display partitions of the display panel; each transmission channel group comprises one or more transmission channels. One transmission channel is used to connect to one display partition. The control unit adjusts the group sending rate of the communication function unit in response to a change in the frame frequency of the input dynamic picture, to obtain an adjusted group sending rate. The communication function unit sends display data to each group of display partitions in turn according to the group number information and the adjusted group sending rate, so that the refresh rate of the display panel matches the frame frequency. The group of display partitions comprises group number information. The control unit groups the complete frame display data of the dynamic picture according to each group of display partitions through the channel identification information in response to input of the complete frame display data, and corresponds each group of display data to the group number information. The control unit is configured to send the signals comprising the group number information of each group of display partitions to the communication function unit in turn within the valid time period. In the case that the communication function unit obtains one group number information, a group of display partitions corresponding to the one group number information is refreshed by a group of display data corresponding to the one group number information sent from the communication function unit.

7. A display control method characterized by comprising: The display control method comprises: adjusting the group sending rate of the communication function unit in response to the change of the frame frequency of the input dynamic picture, to obtain an adjusted group sending rate; controlling the communication function unit to send display data to each group of display partitions in turn in units of groups by the adjusted group sending rate, so that the refresh rate of refreshing all groups of display partitions matches the frame frequency; wherein one group of display partitions comprises one or more display partitions; the control of the communication function unit to send display data to each group of display partitions in turn in units of groups by the adjusted group sending rate comprises: in the valid time period, sending each group of group data to the communication function unit in turn in a predetermined order, so that the communication function unit obtains each group of group data in turn, and in the case that the communication function unit obtains one group number information, a group of display partitions corresponding to the one group number information is refreshed by a group of display data corresponding to the one group number information sent from the communication function unit; wherein each group of group data comprises a group of display data corresponding to a group of display partitions and signal containing group number information corresponding to the group of display partitions.

8. The display control method according to claim 7, characterized by, The display control method further comprises: in response to the input of the dynamic picture, grouping the complete frame display data according to each group of display partitions by the channel identification information to obtain each group of display data, and / or sorting each group of display data according to the physical position of each group of display partitions on the display panel to obtain each group of display data in a predetermined order; and / or, in response to obtaining the connection signal of the display panel, obtaining the channel identification information of the transmission channel of the display panel.

9. The display control method according to claim 7, characterized by, The display control method further comprises: while performing the group sending rate operation process for the Nth frame of image, performing frame frequency operation for the next frame of image.

10. The display control method according to any one of claims 7 to 9, characterized by, The display control method further comprises: while performing the display data transmission process for the Nth frame, performing the group sending rate operation process for the next frame of image. The display control method further comprises: while performing the display data transmission process for the Nth frame, performing the group sending rate operation process for the next frame of image.

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