CN110796982B - Driving method, driving chip, driving device and display device for image display - Google Patents
Driving method, driving chip, driving device and display device for image display Download PDFInfo
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- CN110796982B CN110796982B CN201911125984.5A CN201911125984A CN110796982B CN 110796982 B CN110796982 B CN 110796982B CN 201911125984 A CN201911125984 A CN 201911125984A CN 110796982 B CN110796982 B CN 110796982B
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 23
- 230000003139 buffering effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 12
- 239000011324 bead Substances 0.000 description 5
- 238000004590 computer program Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
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Abstract
The application provides a driving method, a driving chip, a driving device and a display device for image display, which belong to the technical field of display, and the driving method comprises the following steps: receiving unit sub-data in one frame of image data; converting the unit sub-data into pixel voltage for output, and simultaneously receiving the next unit sub-data of the current frame of image data; and performing voltage conversion output on the next unit sub data. According to the technical scheme provided by the embodiment of the application, the voltage output conversion is carried out by using the unit sub-data in one frame of image data each time, and the next unit sub-data is received at the same time, so that the display delay time can be reduced.
Description
Technical Field
The present application relates to the field of display technologies, and in particular, to a driving method, a driving chip, a driving device, and a display device for displaying images.
Background
The operation process of the existing display comprises the following steps: receiving image data from outside; processing the image data by using a transmitting module and a receiving module; and transmitting the processed image data to a driving chip to convert the processed image data into pixel voltages to drive the display panel, so that a picture is displayed on the light-emitting diode display.
However, in the image data processing process, each module and each driving chip in the display are processed by taking a single frame as a unit, so that the display has a delay of displaying one frame in the process of displaying the image.
Disclosure of Invention
The embodiment of the application provides a driving method for image display, which is used for reducing the display delay time.
The application provides a driving method of image display, comprising the following steps:
receiving unit sub-data in one frame of image data;
Converting the unit sub-data into pixel voltage for output, and simultaneously receiving the next unit sub-data of the current frame of image data;
And performing voltage conversion output on the next unit sub data.
In an embodiment, after completing the voltage conversion output of all the unit sub-data of the current frame image data, the method further comprises:
And if the next frame of image data exists after the current frame of image data, performing voltage conversion output on the unit sub-data of the next frame of image data until the voltage conversion output of all frames of image data is completed.
In an embodiment, the unit sub-data includes at least one line of data in one frame of image data.
In an embodiment, the unit sub-data includes at least one row of data in a frame of image data.
In an embodiment, after the simultaneously receiving the next unit sub-data of the current frame image data, the method further comprises: and caching the received next unit sub-data.
The application also provides a driving chip for image display, which comprises:
a processor;
a memory for storing processor-executable instructions;
the processor is configured to execute the driving method of image display.
In an embodiment, the memory includes a buffer area for buffering the received next unit sub-data.
The application also provides a driving device for image display, comprising:
the control chip is used for receiving the image data in a frame unit and dividing the image data in the frame unit into a plurality of unit sub-data;
The driving chip is electrically connected with the control chip and is used for executing the driving method of the image display.
In one embodiment, the control chip includes:
The image receiving module is used for receiving image data in a frame unit;
The image processing module is electrically connected to the image receiving module and is used for dividing the image data taking the frame as a unit into a plurality of unit sub-data.
In an embodiment, the present application further provides a display apparatus, including:
The driving device; and
The display panel is electrically connected with the output end of the driving device and is used for receiving the pixel voltage output by the driving device to display images.
In an embodiment, the display panel comprises one of an LED panel, a small-pitch display screen, a mini LED panel, or a micro LED panel.
According to the technical scheme provided by the embodiment of the application, the voltage output conversion is carried out by using the unit sub-data in one frame of image data each time, and the next unit sub-data is received at the same time, so that the display delay time can be reduced.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below.
Fig. 1 is a schematic diagram of a frame of a display device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a display device according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a display device according to another embodiment of the present application;
FIG. 4 is a flow chart of a driving method for image display according to an embodiment of the application;
Fig. 5 is a schematic diagram of the operation timing of the driving chip.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.
Like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Fig. 1 is a schematic diagram of a frame of a display device according to an embodiment of the application, as shown in fig. 1, the display device 100 includes a driving device 110 and a display panel 120, and the driving device 110 is electrically connected to the display panel 120. The display panel 120 can receive the pixel voltage output by the driving device 110, and display an image under the driving of the driving device 110. The display panel 120 may be one of an LED (LIGHT EMITTING Diode) panel, a small-pitch display screen, a mini LED panel, or a micro LED panel. The small-spacing display screen is characterized in that the center spacing between adjacent LED lamp beads is 2.5mm or less.
In an embodiment, as shown in fig. 1, the driving device 110 includes a control chip 111 and a driving chip 112, and the driving chip 112 is electrically connected to the control chip 111. The control chip 111 may receive the image data transmitted from the external device in units of frames and divide the image data in units of frames into a plurality of unit sub-data. The image receiving and processing are integrated in the same chip, so that the delay time caused by data transmission can be reduced. The external device may be a television box, a smart phone, a computer, a server, or the like, and may be an electronic device that can provide image data.
The frame of image data can be divided into a plurality of unit sub-data, and the data volume of the unit sub-data is smaller than the data volume of the frame of image. The unit sub-data may include one or more scan lines, and may include at least one column data or at least one row data in one frame of image data since the scan mode may be a row scan or a column scan.
The control chip 111 may sequentially transmit the divided plurality of unit sub-data to the driving chip 112. The driving chip 112 receives the unit sub-data in one frame of image data, converts the unit sub-data into pixel voltages and outputs the pixel voltages to drive the display panel 120; during the output of the pixel voltage, the next unit sub-data is received at the same time. And continuing to convert the next unit sub data into pixel voltage for output, and repeating the steps until the voltage conversion output (namely converting the next unit sub data into pixel voltage for output) of all the unit sub data of the current frame of image data is completed. If the next frame of image data exists, the voltage conversion output is continuously carried out on the unit sub-data of the next frame of image according to the process until the voltage conversion output of all frames of images is completed.
In one embodiment, since the next unit sub-data is received simultaneously during the output of the pixel voltage, the received next unit sub-data may be buffered to reduce delay, and then the next unit sub-data is acquired from the buffer for voltage conversion output.
In one embodiment, the driving chip 112 receives the 1 st unit sub-data in the 1 st frame of image data, converts the unit sub-data into the pixel voltage V 1 for outputting, so as to drive the display panel 120. In order to reduce the delay during the output of the pixel voltage V 1 of the 1 st unit sub data, the 2 nd unit sub data transmitted from the control chip 111 is received at the same time. And continuously converting the 2 nd unit sub data into the pixel voltage V 2 for output, and simultaneously receiving the 3 rd unit sub data transmitted by the control chip 111 during the period of outputting the pixel voltage V 2 of the 2 nd unit sub data, and so on until all the unit sub data in the current frame of image data are received and the voltage conversion output is completed, continuously receiving the 1 st unit sub data of the 2 nd frame of image data, and continuously cycling until the receiving and the voltage conversion output of all the frame of image data are completed.
Fig. 2 is a schematic diagram of a frame of a display device 100 according to another embodiment of the application, as shown in fig. 2, the control chip 111 may include an image receiving module 1111 and an image processing module 1112. The image receiving module 1111 is electrically connected to the image processing module 1112. The image receiving module 1111 is configured to receive image data provided by an external device in units of frames; the image processing module 1112 is configured to divide the image data in units of frames into a plurality of unit sub-data, and sequentially transmit the unit sub-data to the driving chip 112.
Fig. 3 is a schematic diagram of a frame of a display device 100 according to another embodiment of the present application, as shown in fig. 3, the above driving chip 112 may include a processor 1121 and a memory 1122 for storing instructions executable by the processor 1121.
The processor 1121 may execute the driving method for image display provided by the present application: receiving unit sub-data in one frame of image data; converting the unit sub-data into pixel voltage for output, and simultaneously receiving the next unit sub-data of the current frame of image data; and performing voltage conversion output on the next unit of sub data so as to drive the display panel.
Processor 1121 includes a core, and the core fetches corresponding program units from memory 1122, and one or more of the cores may be provided. For example, processor 1121 may include one or more Application Specific Integrated Circuits (ASICs), digital Signal Processors (DSPs), digital Signal Processing Devices (DSPDs), programmable Logic Devices (PLDs), field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic elements.
The memory 1122 may include a buffer for buffering the next unit of sub-data received. So that the processor 1121 can extract the next unit of sub-data from the buffer of the memory 1122 for voltage conversion output.
The Memory 1122 may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as static random access Memory (Static Random Access Memory, SRAM), electrically erasable Programmable Read-Only Memory (ELECTRICALLY ERASABLE PROGRAMMABLE READ-Only Memory, EEPROM), erasable Programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), programmable Read-Only Memory (PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk.
The embodiment of the application also provides a computer readable storage medium, wherein the storage medium stores a computer program which can be executed by the processor 1121 to complete the driving method of image display provided by the application.
Memory 1122 is an example of a computer-readable storage medium. Computer readable storage media, including both non-transitory and non-transitory, removable and non-removable media, may implement storage of computer programs by any method or technology. The computer program may be computer readable instructions, data structures, modules of the program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
Fig. 4 is a flowchart of a driving method for image display according to an embodiment of the application. The method may be performed by the driver chip 112 or the processor 1121 of the driver chip 112, and the method may include the following steps.
In step 410, unit sub-data in a frame of image data is received.
In step 420, the unit sub-data is converted into pixel voltages for outputting, and the next unit sub-data of the current frame of image data is received.
In step 430, the next unit sub-data is voltage-converted and output.
Wherein, a frame of image can be regarded as an image, and the unit sub-data can be one or more lines of data in the image; one or more columns of data. The image receiving module 1111 receives image data in units of frames and transmits the image data in units of frames to the image processing module 1112. The image processing module 1112 divides a frame of image data into a plurality of unit sub-data, and sequentially transmits each unit sub-data to the driving chip 112 (i.e. one unit sub-data is transmitted at a time). The driving chip 112 receives one unit of sub-data at a time, converts the unit of sub-data into pixel voltages, and outputs the pixel voltages to the display panel 120, thereby driving the display panel 120 to display a corresponding image.
For example, a pixel may include three LED beads, red, green, and blue, and the brightness of the corresponding bead may be controlled by controlling the voltage output to each bead, thereby controlling the color of the pixel. The voltage conversion output may be considered as converting the color into the voltage magnitude output to the three LED beads of red, green, and blue of the corresponding pixel based on the color of each pixel in the unit sub-data, thereby controlling the color of the pixel in the display panel 120.
Fig. 5 is a schematic diagram of the operation timing of the driving chip. As shown in fig. 5, the unit sub-data is denoted by S, the 2 nd unit sub-data is received simultaneously during the generation of the pixel voltage of the 1 st unit sub-data to drive the display panel 120, the n th unit sub-data is received simultaneously during the generation of the pixel voltage of the n-1 st unit sub-data to drive the display panel 120, the n+1 th unit sub-data is received simultaneously during the generation of the pixel voltage of the n-th unit sub-data to drive the display panel 120, and so on. The display delay between the driving chip and the display panel 120 can be reduced from one frame delay to sub-unit data, and the delay time can be reduced to less than 0.6ms, which is far less than the existing delay time (16.6 ms).
In one embodiment, since the next unit sub-data is received simultaneously during the output of the pixel voltage in step 420, after receiving the next unit sub-data, the method further includes buffering the received next unit sub-data, and subsequently obtaining the next unit sub-data from the buffer for voltage conversion output.
In an embodiment, after the step 430 completes the voltage conversion output of all the unit sub-data of the current frame image data, the method further includes: and if the next frame of image data exists after the current frame of image data, sequentially performing voltage conversion output on the unit sub-data of the next frame of image data until the voltage conversion output of all frames of image data is completed. So that the driving display of images can be continuously performed for a plurality of frames of video images.
In the several embodiments provided in the present application, the disclosed apparatus and method may be implemented in other manners. The apparatus embodiments described above are merely illustrative, for example, of the flowcharts and block diagrams in the figures that illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form a single part, or each module may exist alone, or two or more modules may be integrated to form a single part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored on a computer readable storage medium. Based on this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method of the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Claims (11)
1. A driving method for image display, which is applicable to an LED display device composed of a plurality of LEDs, and is applied to a driving chip of the LED display device, comprising:
receiving unit sub-data in one frame of image data;
Converting the unit sub-data into pixel voltage for output, driving the LED, and simultaneously receiving the next unit sub-data of the current frame of image data; wherein, during the pixel voltage period of generating the nth unit sub data, the receiving of the (n+1) th unit sub data is completed at the same time, and the display delay is shortened to the processing time of the sub unit data;
And performing voltage conversion output on the next unit sub data.
2. The method according to claim 1, wherein after completing the voltage conversion output of all unit sub-data of the current frame image data, the method further comprises:
And if the next frame of image data exists after the current frame of image data, performing voltage conversion and outputting the unit sub-data of the next frame of image data.
3. The method of claim 1, wherein the unit sub-data comprises at least one line of data in a frame of image data.
4. The method of claim 1, wherein the unit sub-data comprises at least one column of data in a frame of image data.
5. The method of claim 1, wherein after the simultaneously receiving the next unit sub-data of the current frame of image data, the method further comprises:
And caching the received next unit sub-data.
6. A driving chip for displaying images is characterized by comprising
A processor;
a memory for storing processor-executable instructions;
wherein the processor is configured to perform the method of driving an image display of any one of claims 1-5.
7. The driver chip of claim 6, wherein the memory includes a buffer for buffering the next unit of sub-data received.
8. A driving apparatus for displaying an image, comprising:
the control chip is used for receiving the image data in a frame unit and dividing the image data in the frame unit into a plurality of unit sub-data;
A driving chip electrically connected to the control chip for executing the driving method of image display according to any one of claims 1-5.
9. The drive device according to claim 8, wherein the control chip includes:
The image receiving module is used for receiving image data in a frame unit;
The image processing module is electrically connected to the image receiving module and is used for dividing the image data taking the frame as a unit into a plurality of unit sub-data.
10. A display device, comprising:
the drive device of claim 8 or 9;
And
The display panel is electrically connected with the output end of the driving device and is used for receiving the pixel voltage output by the driving device to display images.
11. The display device of claim 10, wherein the display panel comprises one of an LED panel, a small pitch display screen, a mini LED panel, or a micro LED panel.
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| CN106847209A (en) * | 2017-02-03 | 2017-06-13 | 京东方科技集团股份有限公司 | A kind of display drive method, display drive apparatus and display device |
| CN106920531A (en) * | 2017-05-12 | 2017-07-04 | 京东方科技集团股份有限公司 | Display device and its driving method |
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| KR100758622B1 (en) * | 2000-01-14 | 2007-09-13 | 마쯔시다덴기산교 가부시키가이샤 | Active matrix display apparatus and method for driving the same |
| KR100805609B1 (en) * | 2006-08-30 | 2008-02-20 | 삼성에스디아이 주식회사 | Driving method of organic light emitting display device |
| KR102148484B1 (en) * | 2013-12-31 | 2020-08-26 | 엘지디스플레이 주식회사 | Organic light emitting diode display device and driving method the same |
| CN107167976A (en) * | 2017-07-13 | 2017-09-15 | 京东方科技集团股份有限公司 | A kind of image element circuit, display panel, display device and its driving method |
| CN107591119B (en) * | 2017-09-18 | 2020-08-14 | 昀光微电子（上海）有限公司 | Improved display sub-field scanning gray imaging method and device |
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| CN106847209A (en) * | 2017-02-03 | 2017-06-13 | 京东方科技集团股份有限公司 | A kind of display drive method, display drive apparatus and display device |
| CN106920531A (en) * | 2017-05-12 | 2017-07-04 | 京东方科技集团股份有限公司 | Display device and its driving method |
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