CN112967694A - Data driver, driving method thereof, display panel and display device - Google Patents
Data driver, driving method thereof, display panel and display device Download PDFInfo
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- CN112967694A CN112967694A CN202110224196.2A CN202110224196A CN112967694A CN 112967694 A CN112967694 A CN 112967694A CN 202110224196 A CN202110224196 A CN 202110224196A CN 112967694 A CN112967694 A CN 112967694A
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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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3607—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 by control of light from an independent source using liquid crystals for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels
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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]
- G09G3/3208—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] organic, e.g. using organic light-emitting diodes [OLED]
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Abstract
The application is applicable to the technical field of display, and provides a data driver, a driving method thereof, a display panel and a display device. The data driver comprises a plurality of data driving modules distributed in an array manner, and the data driving modules correspond to the sub-pixels one by one; the data driving modules in each row of data driving modules are sequentially connected, a first data driving module in each row of data driving modules is used for being connected with the controller, and the first data driving module is any one data driving module in each row of data driving modules; or, the data driving modules in each row of data driving modules are connected in sequence, the second data driving module in each row of data driving modules is used for being connected with the controller, and the second data driving module is any data driving module in each row of data driving modules. The data driver provided by the embodiment of the application can realize frame driving of images, so that displayed pictures are smoother, and the experience of users is improved.
Description
Technical Field
The present application belongs to the field of display technologies, and in particular, to a data driver, a driving method thereof, a display panel, and a display device.
Background
With the development of Display technology, displays have been developed from the former CRT (Cathode Ray Tube) displays to the present LCD (Liquid Crystal Display) displays and OLED (Organic Light Emitting diode) displays. The driving technology of displays has also evolved from point driving to the present row driving.
However, when the line driving method is adopted, a high frame frequency is required to ensure that the human eyes cannot feel the change of the picture, and the frame frequency of the display which is commonly used at present is 60 Hz.
Disclosure of Invention
Embodiments of the present application provide a data driver, a driving method thereof, a display panel, and a display device, which can solve a problem that a line driving method requires a high frame rate.
In a first aspect, an embodiment of the present application provides a data driver, which is applied to a display device in which a plurality of sub-pixels are arranged in a display area, where the data driver includes a plurality of data driving modules arranged in an array, and the data driving modules correspond to the sub-pixels one to one; the data driving modules in each row of data driving modules are sequentially connected, a first data driving module in each row of data driving modules is used for being connected with a controller, and the first data driving module is any one of the data driving modules in each row of data driving modules; or, the data driving modules in each row of data driving modules are sequentially connected, a second data driving module in each row of data driving modules is used for being connected with the controller, and the second data driving module is any one of the data driving modules in each row of data driving modules;
each first data driving module is used for receiving image data signals sent by the controller line by line and transmitting the image data signals to the corresponding data driving module; each second data driving module is used for receiving the image data signals sent by the controller column by column and transmitting the image data signals to the corresponding data driving module; after all the data driving modules of the data driver receive the corresponding image data signals, the data driving modules convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels.
In one possible implementation manner of the first aspect, each data driving module includes a storage unit and a voltage converting unit; the storage unit is connected with the voltage conversion unit, and the voltage conversion unit is connected with the corresponding sub-pixel;
for the condition that all data driving modules in each row of data driving modules are sequentially connected, the storage units of all data driving modules in each row of data driving modules are sequentially connected, and the storage unit of the first data driving module is used for being connected with the controller; the storage unit of the first data driving module is used for receiving the image data signals sent by the controller line by line and transmitting the image data signals to the storage unit of the corresponding data driving module; after each storage unit of all the data driving modules receives the corresponding image data signal, each voltage conversion unit of all the data driving modules converts the corresponding image data signal into a voltage signal and transmits the voltage signal to the corresponding sub-pixel;
for the condition that all data driving modules in each row of data driving modules are sequentially connected, the storage units of all data driving modules in each row of data driving modules are sequentially connected, and the storage unit of the second data driving module is used for being connected with the controller; the storage unit of the second data driving module is used for receiving the image data signals sent by the controller column by column and transmitting the image data signals to the storage unit of the corresponding data driving module; after each storage unit of all the data driving modules receives the corresponding image data signal, each voltage conversion unit of all the data driving modules converts the corresponding image data signal into a voltage signal and transmits the voltage signal to the corresponding sub-pixel.
In one possible implementation manner of the first aspect, the storage unit includes a first memory and a second memory; the first memory is connected with the second memory, and the second memory is connected with the voltage conversion unit;
for the condition that all data driving modules in each row of data driving modules are sequentially connected, all first memories of all the data driving modules in each row are sequentially connected, and the first memories of the first data driving modules are used for being connected with the controller; the first memory of the first data driving module is used for receiving the image data signals sent by the controller line by line and transmitting the image data signals to the first memory of the corresponding data driving module; after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory; after each second memory of all the data driving modules receives the image data signals, each voltage conversion unit of all the data driving modules converts the corresponding image data signals into voltage signals and transmits the voltage signals to the corresponding sub-pixels;
for the condition that all the data driving modules in each row of data driving modules are sequentially connected, all the first memories of all the data driving modules in each row are sequentially connected, and the first memory of the second data driving module is used for being connected with the controller; the first memory of the second data driving module is used for receiving the image data signals sent by the controller column by column and transmitting the image data signals to the first memory of the corresponding data driving module; after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory; after each second memory of all the data driving modules receives the image data signal, each voltage conversion unit of all the data driving modules converts the corresponding image data signal into a voltage signal and transmits the voltage signal to the corresponding sub-pixel.
In a possible implementation manner of the first aspect, the first data driving module is a first data driving module in each row of data driving modules; the second data driving module is a first data driving module in each row of data driving modules.
In a second aspect, an embodiment of the present application provides a driving method of the data driver according to the first aspect,
under the condition that the data driving modules in each row of data driving modules are connected in sequence, the driving method comprises the following steps:
each first data driving module receives image data signals sent by the controller line by line and transmits the image data signals to the corresponding data driving module;
after all data driving modules of the data driver receive the corresponding image data signals, the data driving modules convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels;
under the condition that all data driving modules in each row of data driving modules are connected in sequence, the driving method comprises the following steps:
each second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the corresponding data driving module;
after all the data driving modules of the data driver receive the corresponding image data signals, the data driving modules convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels.
In one possible implementation manner of the second aspect, each data driving module includes a storage unit and a voltage conversion unit; the storage unit is connected with the voltage conversion unit, and the voltage conversion unit is connected with the corresponding sub-pixel;
under the condition that each data drive module in each row of data drive modules is connected in sequence, each first data drive module receives image data signals sent by the controller line by line and transmits the image data signals to the corresponding data drive module, and the method comprises the following steps:
the storage unit of the first data driving module receives the image data signals sent by the controller line by line and transmits the image data signals to the storage unit of the corresponding data driving module;
under the condition that each data driving module in each row of data driving modules is connected in sequence, each second data driving module receives the image data signal sent by the controller column by column and transmits the image data signal to the corresponding data driving module, and the method comprises the following steps:
and the storage unit of the second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the storage unit of the corresponding data driving module.
In one possible implementation manner of the second aspect, the storage unit includes a first memory and a second memory; the first memory is connected with the second memory, and the second memory is connected with the voltage conversion unit;
under the condition that each data driving module in each row of data driving modules is connected in sequence, the storage unit of the first data driving module receives the image data signal sent by the controller line by line and transmits the image data signal to the storage unit of the corresponding data driving module, and the method comprises the following steps:
the first memory of the first data driving module receives the image data signals sent by the controller line by line and transmits the image data signals to the first memory of the corresponding data driving module;
after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory;
under the condition that the data driving modules in each row of data driving modules are sequentially connected, the storage unit of the second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the storage unit of the corresponding data driving module, and the method comprises the following steps:
the first memory of the second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the first memory of the corresponding data driving module;
after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory.
In a possible implementation manner of the second aspect, the first data driving module is a first data driving module in each row of data driving modules; the second data driving module is a first data driving module in each row of data driving modules;
the first data driving module receives the image data signals sent by the controller line by taking the last line of image data signals in the whole frame of image as a starting point; or
And the second data driving module receives the image data signals sent by the controller row by taking the last row of image data signals in the whole frame of image as a starting point.
In a third aspect, an embodiment of the present application provides a display panel, including the data driver of any one of the first aspects.
In a fourth aspect, an embodiment of the present application provides a display device, including the display panel of any one of the third aspects.
Compared with the prior art, the embodiment of the application has the advantages that:
each first data driving module is used for receiving the image data signals sent by the controller line by line and transmitting the image data signals to the corresponding data driving module. Or each second data driving module is used for receiving the image data signals sent by the controller column by column and transmitting the image data signals to the corresponding data driving module. After all the data driving modules of the data driver receive the corresponding image data signals, all the data driving modules convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels. And simultaneously driving all the sub-pixels in the display device to display the image of the whole frame, thereby realizing the frame driving of the image. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural view of a conventional display device;
FIG. 2 is a schematic structural diagram of a data driver according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a data driver according to another embodiment of the present application;
FIG. 4 is a schematic structural diagram of a data driver according to another embodiment of the present application;
FIG. 5 is a flowchart illustrating a driving method of a data driver according to an embodiment of the present application;
FIG. 6 is a schematic structural diagram of a data driver according to another embodiment of the present application;
FIG. 7 is a schematic structural diagram of a data driver according to another embodiment of the present application;
FIG. 8 is a schematic structural diagram of a data driver according to another embodiment of the present application;
fig. 9 is a flowchart illustrating a data driver driving method according to another embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It should also be understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in the specification of this application and the appended claims, the term "if" may be interpreted contextually as "when …" or "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
Furthermore, in the description of the present application and the appended claims, the terms "first," "second," "third," and the like are used for distinguishing between descriptions and not necessarily for describing or implying relative importance.
Reference throughout this specification to "one embodiment" or "some embodiments," or the like, means that a particular feature, structure, or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, appearances of the phrases "in one embodiment," "in some embodiments," "in other embodiments," or the like, in various places throughout this specification are not necessarily all referring to the same embodiment, but rather "one or more but not all embodiments" unless specifically stated otherwise. The terms "comprising," "including," "having," and variations thereof mean "including, but not limited to," unless expressly specified otherwise.
Fig. 1 shows a schematic configuration of a conventional display device. Referring to fig. 1, the conventional display device includes a controller 200, a sub-pixel array, and a data driver. The data driver includes a plurality of data driving modules 100, the sub-pixel array includes a plurality of columns of sub-pixels, and each data driving module 100 is used for driving one column of sub-pixels. Each of the data driving modules 100 includes a storage unit (Latch1 and Latch2) for storing the image data signal transmitted from the control unit and transferring the image data signal to the voltage conversion unit, and a voltage conversion unit (L/S, DAC and Buffer). The voltage conversion unit is used for converting the image data signals into voltage signals, transmitting the voltage signals to the corresponding sub-pixels and driving the sub-pixels to display corresponding images.
The controller 200 transmits the image data signals to all the data driving modules 100 line by line, and after all the memory cells Latch1 receive the image data signal of the mth line, transmits the image data signal of the mth line to the corresponding memory cell Latch2, and then all the memory cells Latch1 continue to receive the image data signal of the m +1 th line. When the memory unit Latch2 receives the image data signal of the m-th row, the voltage converting unit converts the image data signal into a corresponding voltage signal, and transmits the voltage signal to a corresponding sub-pixel, and the sub-pixel is driven to display an image, thereby realizing the line-by-line driving of the image.
Due to the visual residual effect, human eyes cannot distinguish images with less than 0.1s change, and the corresponding frame frequency is 10 Hz. However, in order to ensure a high frame frequency required for the progressive scanning method to ensure that the human eye cannot perceive the picture conversion, the currently common display frame frequency is 60 Hz.
In view of the above problem, the embodiment of the present application provides a data driver, and each first data driving module 100 is configured to receive an image data signal sent by the controller 200 line by line and transmit the image data signal to the corresponding data driving module 100. Or each second data driving module 100 is configured to receive the image data signal sent by the controller 200 column by column and transmit the image data signal to the corresponding data driving module 100. After all the data driving modules 100 of the data driver receive the corresponding image data signals, all the data driving modules 100 convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels. All the sub-pixels in the display device are driven to display the whole frame of image simultaneously, and the frame driving of the image is realized. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
Fig. 2 shows a schematic structural diagram of a data driver according to an embodiment of the present application. Referring to fig. 2, a plurality of sub-pixels 300 are disposed in a display area of the display device in an array, the data driver includes a plurality of data driving modules 100 in an array, and the plurality of data driving modules 100 correspond to the plurality of sub-pixels 300 one to one. The data driving modules 100 in each row of the data driving modules 100 are sequentially connected, a first data driving module 100 in each row of the data driving modules 100 is used for being connected with the controller 200, and the first data driving module 100 is any data driving module 100 in each row of the data driving modules 100.
Specifically, each first data driving module 100 is configured to receive the image data signal sent by the controller 200 line by line and transmit the image data signal to the corresponding data driving module 100. After all the data driving modules 100 of the data driver receive the corresponding image data signals, all the data driving modules 100 convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels 300. The display device simultaneously drives all the sub-pixels 300 to display the image of the whole frame, thereby realizing the frame driving of the image. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
Fig. 3 shows a schematic structural diagram of a data driver according to another embodiment of the present application. Referring to fig. 3, each data driving module 100 includes a memory cell 101 and a voltage converting unit 102, the memory cell 101 is connected to the voltage converting unit 102, and the voltage converting unit 102 is connected to a corresponding sub-pixel 300. The memory cells 101 of the data driving modules 100 in each row of the data driving modules 100 are sequentially connected, and the memory cell 101 of the first data driving module 100 is used for being connected with the controller 200.
Specifically, the storage unit 101 of the first data driving module 100 is configured to receive the image data signal sent by the controller 200 on a row-by-row basis and transfer the image data signal to the storage unit 101 of the corresponding data driving module 100. After each storage unit 101 of all the data driving modules 100 receives the corresponding image data signal, each voltage conversion unit 102 of all the data driving modules 100 converts the corresponding image data signal into a voltage signal, and transmits the voltage signal to the corresponding sub-pixel 300, and simultaneously drives all the sub-pixels 300 to display the whole frame of image, thereby implementing the frame driving of the image.
Fig. 4 shows a schematic structural diagram of a data driver according to another embodiment of the present application. Referring to fig. 4, the memory unit 101 includes a first memory 1011 and a second memory 1012, the first memory 1011 is connected to the second memory 1012, and the second memory 1012 is connected to the voltage conversion unit 102. The first memories 1011 of each row of the data driving modules 100 are sequentially connected, and the first memories 1011 of the first data driving modules 100 are used for being connected with the controller 200.
Specifically, the first memory 1011 of the first data driving module 100 is configured to receive the image data signal sent by the controller 200 line by line, and transmit the image data signal to the first memory 1011 of the corresponding data driving module 100. After each first memory 1011 of all the data driving modules 100 receives the corresponding image data signal, each first memory 1011 of all the data driving modules 100 transmits the image data signal to the corresponding second memory 1012. After each second memory 1012 of all the data driving modules 100 receives the image data signal, each voltage conversion unit 102 of all the data driving modules 100 converts the corresponding image data signal into a voltage signal, and transmits the voltage signal to the corresponding sub-pixel 300, and drives all the sub-pixels 300 to display the whole frame of image, thereby implementing the frame driving of the image.
Illustratively, the first data driving module 100 is the first data driving module 100 in each column of the data driving modules 100. The first data driving module 100 first receives the image data signal of the last row in the whole frame of image, and then transmits the image data signal of the last row to the last data driving module 100 of the column. Then, the first data driving module 100 continues to receive the image data signals of the last but one row of the whole frame of image and continues to transmit the image data signals of the last but one row to the last but one data driving module 100 of the column. When the first data driving module 100 receives the image data signals of the first row in the whole frame image, all the image data signals included in the data driving module 100 form the whole frame image. All the data driving modules 100 convert the respective image data signals into voltage signals, and transmit the voltage signals to the respective sub-pixels 300, so as to drive the sub-pixels 300 to display images. All the sub-pixels 300 display the entire frame of image, implementing frame driving of the image.
For clarity of explanation of specific operation of the data driver, the operation of the data driver will be described with reference to fig. 4.
The whole frame of image includes M rows of image data signals, each column of the data driving modules 100 includes M data driving modules 100, and each data driving module 100 includes a first memory 1011, a second memory 1012 and a voltage converting unit 102. The connection relationship of the respective components is shown in fig. 4.
First, the first memory 1011 in each column of the data driving module 100 receives the image data signal of the mth row, and transmits the image data signal of the mth row to the mth data driving module 100 in each column. Then, the first memory 1011 in each column of the data driving module 100 receives the image data signal of the M-1 th row and transmits the image data signal of the M-1 th row to the M-1 th data driving module 100 in each column. After the first memories 1011 in each row of the data driving modules 100 receive the image data signals of the first row, all the image data signals in the first memories 1011 in all the data driving modules 100 form a whole frame image, all the first memories 1011 transmit the image data signals to the corresponding second memories 1012, and at this time, the first memories 1011 can receive new image data signals of the whole frame image. When all the second memories 1012 receive the image data signals, the voltage conversion unit 102 converts the image data signals into voltage signals, and transmits the voltage signals to the corresponding sub-pixels 300, so as to drive the sub-pixels 300 to display images. All the sub-pixels 300 are driven simultaneously to display the whole frame of image, thereby realizing the frame driving of the image. Compared with the existing line driving technology, under the condition that the frame driving is carried out at the same frame frequency, the displayed image is more flow, and the experience of a user can be improved.
Fig. 5 is a flowchart illustrating a data driver driving method according to an embodiment of the present application. Referring to fig. 5, the driving method may include step S501 and step S502.
In step S501, each first data driving module 100 receives the image data signal sent by the controller 200 line by line, and transmits the image data signal to the corresponding data driving module 100.
In step S502, after all the data driving modules 100 of the data driver receive the corresponding image data signals, all the data driving modules 100 convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels 300.
Specifically, all image data signals in the whole frame of image can be transmitted to the corresponding data driving modules 100 through step S501, and after all the data driving modules 100 receive the respective corresponding image data signals, the image data signals in all the data driving modules 100 at this time constitute the whole frame of image. All the data driving modules 100 convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels 300. The display device simultaneously drives all the sub-pixels 300 to display the image of the whole frame, thereby realizing the frame driving of the image. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
In some embodiments, step S501 may specifically include step S5011.
In step S5011, the memory unit 101 of the first data driving module 100 receives the image data signal transmitted by the controller 200 on a row-by-row basis and transfers the image data signal to the memory unit 101 of the corresponding data driving module 100.
Specifically, the image data signals are received by the memory cells 101 in the first data driving module 100 and transmitted to the memory modules of the corresponding driving modules, so that the corresponding image data signals are finally received by the memory cells 101 in all the data driving modules 100. When all the storage units 101 receive the image data signals, the voltage conversion unit 102 converts the image data signals into voltage signals and transmits the voltage signals to the corresponding sub-pixels 300. All the sub-pixels 300 are driven to display the whole frame of image simultaneously, realizing the frame driving of the image.
In some embodiments, step S5011 may include step S50111 and step S50112.
In step S50111, the first memory 1011 of the first data driving module 100 receives the image data signal transmitted by the controller 200 line by line, and transmits the image data signal to the first memory 1011 of the corresponding data driving module 100.
In step S50112, after each first memory 1011 of all the data driving modules 100 receives the corresponding image data signal, each first memory 1011 of all the data driving modules 100 transmits the image data signal to the corresponding second memory 1012.
Specifically, the first memory 1011 in the first data driving module 100 receives the image data signals line by line, and transmits the image data signals to the corresponding first memory 1011 in the data driving module 100. When the first memories 1011 of all the data driving modules 100 receive the image data signals, all the first memories 1011 transmit the image signals to the corresponding second memories 1012, and the first memories 1011 of the first data driving modules 100 start to receive the image data signals of a new whole frame of image. When the second memories 1012 in all the data driving modules 100 receive the image data signals, the voltage converting unit 102 converts the image data signals into voltage signals and transmits the voltage signals to the corresponding sub-pixels 300. All the sub-pixels 300 are driven to display the whole frame of image simultaneously, realizing the frame driving of the image.
Fig. 6 shows a schematic structural diagram of a data driver according to another embodiment of the present application. Referring to fig. 6, a plurality of sub-pixels 300 are disposed in a display area of the display device in an array, the data driver includes a plurality of data driving modules 100 in an array, and the plurality of data driving modules 100 correspond to the plurality of sub-pixels 300 one to one. Each data driving module 100 in each row of data driving modules 100 is connected in sequence, a second data driving module 100 in each row of data driving modules 100 is used for being connected with the controller 200, and the second data driving module 100 is any data driving module 100 in each row of data driving modules 100.
Specifically, each of the second data driving modules 100 is configured to receive the image data signal sent by the controller 200 column by column and transmit the image data signal to the corresponding data driving module 100. After all the data driving modules 100 of the data driver receive the corresponding image data signals, all the data driving modules 100 convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels 300. The display device simultaneously drives all the sub-pixels 300 to display the image of the whole frame, thereby realizing the frame driving of the image. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
Fig. 7 shows a schematic structural diagram of a data driver according to another embodiment of the present application. Referring to fig. 7, each data driving module 100 includes a memory cell 101 and a voltage converting unit 102, the memory cell 101 is connected to the voltage converting unit 102, and the voltage converting unit 102 is connected to the corresponding sub-pixel 300. The memory units 101 of the data driving modules 100 in each row of the data driving modules 100 are sequentially connected, and the memory unit 101 of the second data driving module 100 is used for being connected with the controller 200.
Specifically, the storage unit 101 of the second data driving module 100 is configured to receive the image data signal sent by the controller 200 column by column and transmit the image data signal to the storage unit 101 of the corresponding data driving module 100. After each storage unit 101 of all the data driving modules 100 receives the corresponding image data signal, each voltage conversion unit 102 of all the data driving modules 100 converts the corresponding image data signal into a voltage signal, and transmits the voltage signal to the corresponding sub-pixel 300. The display device simultaneously drives all the sub-pixels 300 to display the image of the whole frame, thereby realizing the frame driving of the image. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
Fig. 8 is a schematic structural diagram of a data driver according to another embodiment of the present application. Referring to fig. 8, the memory unit 101 includes a first memory 1011 and a second memory 1012, the first memory 1011 is connected to the second memory 1012, and the second memory 1012 is connected to the voltage conversion unit 102. The first memories 1011 of each row of the data driving modules 100 are sequentially connected, and the first memories 1011 of the second data driving modules 100 are used for being connected with the controller 200.
Specifically, the first memory 1011 of the second data driving module 100 is configured to receive the image data signal sent by the controller 200 column by column, and transmit the image data signal to the first memory 1011 of the corresponding data driving module 100. After each first memory 1011 of all the data driving modules 100 receives the corresponding image data signal, each first memory 1011 of all the data driving modules 100 transmits the image data signal to the corresponding second memory 1012. After each second memory 1012 of all the data driving modules 100 receives the image data signal, each voltage conversion unit 102 of all the data driving modules 100 converts the corresponding image data signal into a voltage signal and transmits the voltage signal to the corresponding sub-pixel 300. The display device simultaneously drives all the sub-pixels 300 to display the image of the whole frame, thereby realizing the frame driving of the image. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
Illustratively, the second data driving module 100 is the first data driving module 100 in each row of the data driving modules 100. The second data driving module 100 first receives the image data signal of the last column in the whole frame of image, and then transmits the image data signal of the last column to the last data driving module 100 of the row. The second data driving module 100 then continues to receive the image data signals of the penultimate column in the whole frame of image and continues to transmit the image data signals of the penultimate column to the penultimate data driving module 100 of the row. When the second data driving module 100 receives the first column of image data signals in the whole frame of image, all the image data signals included in the data driving module 100 form the whole frame of image. All the data driving modules 100 convert the respective image data signals into voltage signals, and transmit the voltage signals to the respective sub-pixels 300, so as to drive the sub-pixels 300 to display images. All the sub-pixels 300 display the entire frame of image, implementing frame driving of the image.
For clarity of explanation of specific operation of the data driver, the operation of the data driver will be described with reference to fig. 8.
The whole frame image includes N columns of image data signals, each row of the data driving module 100 includes N data driving modules 100, and each data driving module 100 includes a first memory 1011, a second memory 1012 and a voltage converting unit 102. The connection relationship of the respective components is shown in fig. 8.
First, the first memory 1011 in each row of the data driving module 100 receives the image data signal of the nth column, and transmits the image data signal of the nth column to the nth data driving module 100 in each row. Then, the first memory 1011 in each row of the data driving module 100 receives the image data signal of the (N-1) th column and transmits the image data signal of the (N-1) th column to the (N-1) th data driving module 100 in each row. After the first memories 1011 in each row of the data driving modules 100 receive the image data signals in the first column, all the image data signals in the first memories 1011 in all the data driving modules 100 form a whole frame image, all the first memories 1011 transmit the image data signals to the corresponding second memories 1012, and at this time, the first memories 1011 can receive new image data signals of the whole frame image. When all the second memories 1012 receive the image data signals, the voltage conversion unit 102 converts the image data signals into voltage signals, and transmits the voltage signals to the corresponding sub-pixels 300, so as to drive the sub-pixels 300 to display images. All the sub-pixels 300 are driven simultaneously to display the whole frame of image, thereby realizing the frame driving of the image. Compared with the existing line driving technology, under the condition that the frame driving is carried out at the same frame frequency, the displayed image is more flow, and the experience of a user can be improved.
Fig. 9 is a flowchart illustrating a data driver driving method according to an embodiment of the present application. Referring to fig. 9, the above driving method may include step S901 and step S902.
In step S901, each second data driving module 100 receives the image data signal sent by the controller 200 column by column, and transmits the image data signal to the corresponding data driving module 100.
In step S902, after all the data driving modules 100 of the data driver receive the corresponding image data signals, all the data driving modules 100 convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels 300.
Specifically, all the image data signals in the whole frame of image can be transmitted to the corresponding data driving modules 100 through step S901, and after all the data driving modules 100 receive the respective corresponding image data signals, the image data signals in all the data driving modules 100 at this time constitute the whole frame of image. All the data driving modules 100 convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels 300. The display device simultaneously drives all the sub-pixels 300 to display the image of the whole frame, thereby realizing the frame driving of the image. Compared with the existing line driving, the frame driving has lower requirements on frame frequency, and under the condition of the same frame frequency, the frame driving display image has the characteristic of smoother picture, so that the experience of a user can be improved.
In some embodiments, step S901 may specifically include step S9011.
In step S9011, the storage unit 101 of the second data driving module 100 receives the image data signal sent by the controller 200 column by column, and transmits the image data signal to the storage unit 101 of the corresponding data driving module 100.
Specifically, the image data signals are received by the memory cells 101 in the second data driving module 100 and transmitted to the memory modules of the corresponding driving modules, so that the memory cells 101 in all the data driving modules 100 finally receive the corresponding image data signals. When all the storage units 101 receive the image data signals, the voltage conversion unit 102 converts the image data signals into voltage signals and transmits the voltage signals to the corresponding sub-pixels 300. All the sub-pixels 300 are driven to display the whole frame of image simultaneously, realizing the frame driving of the image.
In some embodiments, step 95011 may include step S90111 and step S90112.
In step S90111, the first memory 1011 of the second data driving module 100 receives the image data signals sent by the controller 200 column by column, and transmits the image data signals to the first memory 1011 of the corresponding data driving module 100.
In step S90112, after each first memory 1011 of all the data driving modules 100 receives the corresponding image data signal, each first memory 1011 of all the data driving modules 100 transmits the image data signal to the corresponding second memory 1012.
Specifically, the first memory 1011 in the second data driving module 100 receives the image data signal column by column, and transmits the image data signal to the corresponding first memory 1011 in the data driving module 100. When the first memories 1011 of all the data driving modules 100 receive the image data signals, all the first memories 1011 transmit the image signals to the corresponding second memories 1012, and the first memories 1011 of the first data driving modules 100 start to receive the image data signals of a new whole frame of image. When the second memories 1012 in all the data driving modules 100 receive the image data signals, the voltage converting unit 102 converts the image data signals into voltage signals and transmits the voltage signals to the corresponding sub-pixels 300. All the sub-pixels 300 are driven to display the whole frame of image simultaneously, realizing the frame driving of the image.
The data driver provided by the embodiment of the application has the advantages that:
(1) frame driving is realized, so that a display picture is smoother, and the experience of a user is improved.
(2) And after the controller does not send the image data signal, all the sub-pixels display corresponding images according to the image data signal in the current second memory, so that the self-refreshing operation is completed.
(3) In the middle of frame and frame display, by controlling XON function and inserting black picture, 120Hz driving effect can be achieved when 60Hz driving is performed.
The application also provides a display panel comprising the data driver. The display panel adopts a frame driving technology, and the specific driving principle of the display panel is the same as the working principle of the data driver, which is not described herein again. The display panel has the characteristic of smooth image display, and can improve the experience of a user.
The application also provides a display device which comprises the display panel. The display device has the characteristic of smooth image display, and can improve the experience of a user.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A data driver is applied to a display device with a plurality of sub-pixels arranged in an array in a display area, and is characterized in that the data driver comprises a plurality of data driving modules arranged in an array, and the data driving modules correspond to the sub-pixels one by one; the data driving modules in each row of data driving modules are sequentially connected, a first data driving module in each row of data driving modules is used for being connected with a controller, and the first data driving module is any one of the data driving modules in each row of data driving modules; or, the data driving modules in each row of data driving modules are sequentially connected, a second data driving module in each row of data driving modules is used for being connected with the controller, and the second data driving module is any one of the data driving modules in each row of data driving modules;
each first data driving module is used for receiving image data signals sent by the controller line by line and transmitting the image data signals to the corresponding data driving module; each second data driving module is used for receiving the image data signals sent by the controller column by column and transmitting the image data signals to the corresponding data driving module; after all the data driving modules of the data driver receive the corresponding image data signals, the data driving modules convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels.
2. The data driver of claim 1, wherein each data driving module comprises a storage unit and a voltage converting unit; the storage unit is connected with the voltage conversion unit, and the voltage conversion unit is connected with the corresponding sub-pixel;
for the condition that all data driving modules in each row of data driving modules are sequentially connected, the storage units of all data driving modules in each row of data driving modules are sequentially connected, and the storage unit of the first data driving module is used for being connected with the controller; the storage unit of the first data driving module is used for receiving the image data signals sent by the controller line by line and transmitting the image data signals to the storage unit of the corresponding data driving module; after each storage unit of all the data driving modules receives the corresponding image data signal, each voltage conversion unit of all the data driving modules converts the corresponding image data signal into a voltage signal and transmits the voltage signal to the corresponding sub-pixel;
for the condition that all data driving modules in each row of data driving modules are sequentially connected, the storage units of all data driving modules in each row of data driving modules are sequentially connected, and the storage unit of the second data driving module is used for being connected with the controller; the storage unit of the second data driving module is used for receiving the image data signals sent by the controller column by column and transmitting the image data signals to the storage unit of the corresponding data driving module; after each storage unit of all the data driving modules receives the corresponding image data signal, each voltage conversion unit of all the data driving modules converts the corresponding image data signal into a voltage signal and transmits the voltage signal to the corresponding sub-pixel.
3. The data driver of claim 2, wherein the storage unit includes a first memory and a second memory; the first memory is connected with the second memory, and the second memory is connected with the voltage conversion unit;
for the condition that all data driving modules in each row of data driving modules are sequentially connected, all first memories of all the data driving modules in each row are sequentially connected, and the first memories of the first data driving modules are used for being connected with the controller; the first memory of the first data driving module is used for receiving the image data signals sent by the controller line by line and transmitting the image data signals to the first memory of the corresponding data driving module; after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory; after each second memory of all the data driving modules receives the image data signals, each voltage conversion unit of all the data driving modules converts the corresponding image data signals into voltage signals and transmits the voltage signals to the corresponding sub-pixels;
for the condition that all the data driving modules in each row of data driving modules are sequentially connected, all the first memories of all the data driving modules in each row are sequentially connected, and the first memory of the second data driving module is used for being connected with the controller; the first memory of the second data driving module is used for receiving the image data signals sent by the controller column by column and transmitting the image data signals to the first memory of the corresponding data driving module; after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory; after each second memory of all the data driving modules receives the image data signal, each voltage conversion unit of all the data driving modules converts the corresponding image data signal into a voltage signal and transmits the voltage signal to the corresponding sub-pixel.
4. The data driver of claim 1, wherein the first data driving module is a first data driving module in each column of data driving modules; the second data driving module is a first data driving module in each row of data driving modules.
5. A driving method applied to the data driver of any one of claims 1 to 4,
under the condition that the data driving modules in each row of data driving modules are connected in sequence, the driving method comprises the following steps:
each first data driving module receives image data signals sent by the controller line by line and transmits the image data signals to the corresponding data driving module;
after all data driving modules of the data driver receive the corresponding image data signals, the data driving modules convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels;
under the condition that all data driving modules in each row of data driving modules are connected in sequence, the driving method comprises the following steps:
each second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the corresponding data driving module;
after all the data driving modules of the data driver receive the corresponding image data signals, the data driving modules convert the image data signals into voltage signals and transmit the voltage signals to the corresponding sub-pixels.
6. The driving method of the data driver as claimed in claim 5, wherein each of the data driving modules comprises a storage unit and a voltage converting unit; the storage unit is connected with the voltage conversion unit, and the voltage conversion unit is connected with the corresponding sub-pixel;
under the condition that each data drive module in each row of data drive modules is connected in sequence, each first data drive module receives image data signals sent by the controller line by line and transmits the image data signals to the corresponding data drive module, and the method comprises the following steps:
the storage unit of the first data driving module receives the image data signals sent by the controller line by line and transmits the image data signals to the storage unit of the corresponding data driving module;
under the condition that each data driving module in each row of data driving modules is connected in sequence, each second data driving module receives the image data signal sent by the controller column by column and transmits the image data signal to the corresponding data driving module, and the method comprises the following steps:
and the storage unit of the second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the storage unit of the corresponding data driving module.
7. The driving method of the data driver according to claim 6, wherein the storage unit includes a first memory and a second memory; the first memory is connected with the second memory, and the second memory is connected with the voltage conversion unit;
under the condition that each data driving module in each row of data driving modules is connected in sequence, the storage unit of the first data driving module receives the image data signal sent by the controller line by line and transmits the image data signal to the storage unit of the corresponding data driving module, and the method comprises the following steps:
the first memory of the first data driving module receives the image data signals sent by the controller line by line and transmits the image data signals to the first memory of the corresponding data driving module;
after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory;
under the condition that the data driving modules in each row of data driving modules are sequentially connected, the storage unit of the second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the storage unit of the corresponding data driving module, and the method comprises the following steps:
the first memory of the second data driving module receives the image data signals sent by the controller column by column and transmits the image data signals to the first memory of the corresponding data driving module;
after each first memory of all the data driving modules receives the corresponding image data signal, each first memory of all the data driving modules transmits the image data signal to the corresponding second memory.
8. The driving method of the data driver according to claim 5, wherein the first data driving module is a first data driving module in each column of the data driving modules; the second data driving module is a first data driving module in each row of data driving modules;
the first data driving module receives the image data signals sent by the controller line by taking the last line of image data signals in the whole frame of image as a starting point; or
And the second data driving module receives the image data signals sent by the controller row by taking the last row of image data signals in the whole frame of image as a starting point.
9. A display panel comprising the data driver of any one of claims 1 to 4.
10. A display device characterized by comprising the display panel according to claim 9.
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