CN112951171B - Display device and driving method - Google Patents
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- CN112951171B CN112951171B CN202110130396.1A CN202110130396A CN112951171B CN 112951171 B CN112951171 B CN 112951171B CN 202110130396 A CN202110130396 A CN 202110130396A CN 112951171 B CN112951171 B CN 112951171B
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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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3648—Control of matrices with row and column drivers using an active matrix
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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
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3685—Details of drivers for data electrodes
- G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
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- Liquid Crystal Display Device Control (AREA)
Abstract
The invention discloses a display device and a driving method, wherein the display device comprises: the display device comprises a data transmission assembly, a time schedule controller, at least one source electrode driving chip and a display panel, wherein the data transmission assembly transmits picture data to the time schedule controller; when the time schedule controller detects that the data transmission assembly transmits static image data, the time schedule controller outputs a control clock signal and a control data signal to the source electrode driving chip so as to send an interrupt data transmission instruction to the source electrode driving chip; the source electrode driving chips receive the command of interrupting data transmission, store the current frame of picture data in respective line buffers, and send a disconnection command to the time schedule controller to be disconnected with the time schedule controller, the time schedule controller stops sending data signals to at least one source electrode driving chip, and the source electrode driving chips continuously output the stored current picture data to the display panel through the line buffers for display. The display device and the driving method can effectively reduce the power consumption of the display device.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device and a driving method thereof.
Background
With the rapid upgrade of the electronic market, display devices, such as notebook computers and desktop computers, have become mainstream for consumption, and the demand and the yield are increasing, and accordingly, the power consumption requirements of people on the display devices are also increasing. Most of the existing display devices adopt a PSR (Panel Self Refresh) function to achieve the purpose of saving power consumption. However, in the conventional PSR technology, the timing controller needs to perform data transmission operation, and there is a large power consumption loss during data transmission, and in this way, the power consumption of the display device is still high.
Disclosure of Invention
The invention provides a display device and a driving method, which can effectively reduce the power consumption of the display device.
The technical scheme is as follows:
the present invention provides a display device including: the display device comprises a data transmission component, a time sequence controller, at least one source electrode driving chip and a display panel, wherein the data transmission component is connected with the time sequence controller and transmits picture data to the time sequence controller,
the time schedule controller is connected with at least one source electrode driving chip, and when detecting that the data transmission assembly transmits static image data, the time schedule controller outputs a control clock signal and a control data signal to at least one source electrode driving chip so as to send an instruction of interrupting data transmission to at least one source electrode driving chip;
the source driving chips are connected with the display panel and respectively comprise a line buffer arranged inside, the source driving chips receive a data transmission interruption instruction, store the current frame of picture data in the respective line buffers and respectively send a disconnection instruction to the time schedule controller so as to be disconnected from the time schedule controller, the time schedule controller stops sending data signals to the source driving chips, and the source driving chips continuously output the stored current picture data to the display panel through the line buffers for display.
Furthermore, the time schedule controller comprises a detection unit and a picture change control unit;
the detection unit is connected with the picture change control unit and the data transmission component, detects picture changes, and triggers the picture change control unit if one or more source electrode driving chips correspondingly control the picture changes in the area;
the picture change control unit is connected with the source electrode driving chip and triggered to be connected with the source electrode driving chip corresponding to the picture change again and send data after the picture change to the source electrode driving chip corresponding to the picture change.
Furthermore, each source driving chip further comprises a control judgment unit, a control circuit and a receiver, wherein the control judgment unit is connected with the time schedule controller and the control circuit, the control circuit is connected with the receiver, the receiver is also connected with the time schedule controller and the line buffer, the control judgment unit receives an instruction sent by the time schedule controller, and the receiver receives a control clock signal, a control data signal and picture data sent by the time schedule controller.
Further, the control circuit comprises a resistor and a transistor, a first end of the transistor of the control circuit is connected with the control judgment unit, a second end of the transistor is grounded, a third end of the transistor is connected with a power supply through the resistor, and the third end of the transistor is also connected with the receiver.
Further, the transistor is a field effect transistor, the first terminal of the transistor is a gate of the transistor, the second terminal of the transistor is a source or a drain of the transistor, and the third terminal of the transistor is a drain or a source of the transistor.
Furthermore, the time schedule controller comprises a detection unit, the detection unit is connected with the data transmission assembly, the detection unit is continuously disconnected with the source electrode driving chip when the detection picture is unchanged, and the source electrode driving chip continuously outputs the stored current picture data to the display panel through the line buffer for displaying.
The present invention also provides a driving method, which includes: the data transmission assembly transmits image data to the time schedule controller, and the time schedule controller outputs a control clock signal and a control data signal to at least one source electrode driving chip when detecting that the data transmission assembly transmits static image data so as to send an interrupt data transmission instruction to the at least one source electrode driving chip;
the source driving chips receive the command of interrupting data transmission, store the current frame of picture data in respective line buffers, and send a disconnection command to the time sequence controller to disconnect with the time sequence controller, the time sequence controller stops sending data signals to the source driving chips, and the source driving chips continuously output the stored current picture data to the display panel through the line buffers for display.
The time schedule controller detects whether the picture changes or not;
if the source driving chips corresponding to the frame changes are detected to control the frame changes of the area, the time schedule controller sends an instruction of ending the interruption of data transmission to the source driving chips corresponding to the frame changes, outputs a control clock signal and a control data signal to the source driving chips corresponding to the frame changes, establishes connection with the source driving chips corresponding to the frame changes again and sends data after the frame changes to the source driving chips corresponding to the frame changes, the source driving chips corresponding to the frame changes provide the data after the frame changes to the display panel, the data after the frame changes are output by the corresponding area of the display panel, and other source driving chips except the source driving chips corresponding to the frame changes continue to maintain the frame data stored in the line buffer to be output to the display panel for display.
If the time schedule controller detects that the picture is unchanged, the connection between the source driving chips and the source driving chips is continuously disconnected, and all the source driving chips continuously output the stored current picture data to the display panel through the line buffer for displaying.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
transmitting the image data to a time schedule controller through a data transmission assembly, and outputting a control clock signal and a control data signal to at least one source electrode driving chip by the time schedule controller when the time schedule controller detects that the data transmission assembly transmits static image data so as to send an instruction of interrupting data transmission to the at least one source electrode driving chip; the source driving chips receive the data transmission interruption instruction, store the current frame of image data in respective line buffers, and send disconnection instructions to the time sequence controller to disconnect the time sequence controller, the time sequence controller stops sending data signals to the source driving chips, and the source driving chips continuously output the stored current frame of image data to the display panel through the line buffers for display. Therefore, when the static picture is transmitted, the data can be output only by adopting the line buffer of the source electrode driving chip, the power consumption of the display device is reduced, the quality of the display device is improved, and the product competitiveness is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented in accordance with the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more clearly understood, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Drawings
Fig. 1 is a main block diagram of a display device according to an embodiment of the present invention;
fig. 2 is a circuit diagram of the display device of fig. 1;
FIG. 3 is a flow chart of steps of a driving method provided by an embodiment of the invention;
fig. 4 is a flowchart illustrating steps of a driving method according to another embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the display device and the method thereof according to the present invention, and the specific implementation, structure, features and effects thereof will be made with reference to the accompanying drawings and the preferred embodiments.
The foregoing and other technical and scientific aspects, features and advantages of the present invention will be apparent from the following detailed description of preferred embodiments, which is to be read in connection with the accompanying drawings. While the present invention has been described in connection with the preferred embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but is intended to cover various modifications, equivalent arrangements, and specific embodiments thereof.
Fig. 1 is a main block diagram of a display device according to an embodiment of the present invention. The display device operates in an electronic device, which may be, but not limited to, a desktop computer, a tablet computer, a PDA (Personal Digital Assistant), a mobile phone, a Digital camera, and other liquid crystal display devices. Referring to fig. 1, the display device includes: the display device includes a data transmission assembly 9, a Timing Controller (TCON) 10, at least one Source driving chip (Source IC) 11, and a display panel 12, each Source driving chip 11 including a Line Buffer110 disposed inside.
Wherein, the data transmission assembly 9 is connected with the time sequence controller 10 and transmits the picture data to the time sequence controller 10; when the timing controller 10 detects that the Data transmission component 9 transmits static image Data (Data) or has partial area image change, the power consumption of the display device can be effectively reduced. For example, when the timing controller 10 detects that the data transmission device 9 transmits the still picture data, the timing controller does not output a signal to the source driving chip, but the source driving chip 11 can maintain the internal Line Buffer110 to output the still picture data, thereby effectively reducing power consumption. When the timing controller 10 detects that some of the frames in the display area change, the Line Buffer110 in the source driver chip 11 is maintained to output the static frame data to the frames in other areas, so as to achieve the purpose of reducing the power consumption of the display device.
Specifically, the timing controller 10 is connected to at least one source driving chip 11, and when the timing controller 10 detects that the data transfer device 9 transfers the still picture data, the timing controller 10 outputs a control Clock (CK) signal and a Control Data (CD) signal to all the source driving chips 11 to transmit an instruction to interrupt data transfer to all the source driving chips 11.
All the source driving chips 11 are connected to the display panel 12 and each includes a Line Buffer disposed inside, the source driving chips 11 receive an instruction to interrupt transmission of data, store the current frame of picture data in their respective Line buffers 110, and send a disconnection (lock) instruction to the timing controller 10 to disconnect the timing controller 10, the timing controller stops sending data signals (for example, P2P data signals) to all the source driving chips 11, and the source driving chips 11 continuously output the stored current frame of data to the display panel 12 through the Line buffers 110 for display, so as to ensure normal display of the picture on the display panel 12. At this time, the timing controller informs the data transmission device 9, the data transmission device also stops transmitting the P2P data signal to the timing controller, and the timing controller also stops transmitting the P2P data signal to the source driver chip, thereby greatly saving power consumption.
Preferably, the timing controller 10 may further include a detecting unit 101 and a frame change control unit 102, the detecting unit 101 is connected to the frame change control unit 102 and the data transmission device 9, the frame change control unit 102 may be further connected to all the source driver chips 11, if the frame is changed, the data transmission device 9 sends the changed frame to the timing controller 10, the detecting unit 101 of the timing controller is configured to detect whether the frame is changed, if the frame is changed in the control area of one or more corresponding source driver chips, the frame change control unit 102 is triggered, after the frame change control unit 102 of the timing controller 10 is triggered, the frame change control unit 102 sends an instruction to terminate the transmission of the interrupt data to the source driver chip corresponding to the frame change, outputting a control clock signal and a control data signal to a source driver chip corresponding to the picture change, establishing connection with the source driver chip corresponding to the picture change again, and sending the data after the picture change to the source driver chip corresponding to the picture change, providing the data after the picture change to a display panel by the source driver chip corresponding to the picture change, outputting the data after the picture change in a corresponding area of the display panel, and continuously maintaining the picture data stored in the Line Buffer110 to be output to the display panel for display by other source driver chips except the source driver chip corresponding to the picture change (for example, taking 4 source driver chips 11 as an example, if the source driver chip corresponding to the picture change is the 4 th source driver chip, the other source driver chips are the 1 st to the 3 rd source driver chips).
Here, when the data transmission device 9 transmits the frame data change of a certain display region, the timing controller 10 will detect the frame data change transmitted by the data transmission device 9 and also determine the frame data change of the corresponding control region of the source driver chip.
Preferably, the detecting unit 101 of the timing controller is configured to detect that the frame has not changed, and then disconnect the source driver chip from the display panel, and the source driver chip still continues to output the stored current frame data to the display panel through the line buffer for displaying.
The control clock signal is used to select the source driver chips, and for example, 4 source driver chips 11 are adopted, and the addresses of the 4 source driver chips 11 may be 0000, 0001, 0010, and 0011 in sequence, respectively. The control data signal is used to control whether data transmission is performed between the source driver chip and the timing controller 10, and when the control data signal value is 0000, it indicates that the timing controller is disconnected from the corresponding source driver chip and does not transmit data, and when the control data signal value is 1111, it indicates that the timing controller 10 is connected to the corresponding source driver chip and transmits data to the corresponding source driver chip. The timing controller 10 outputs a control clock signal and a control Data signal to control and select different source driver chips 11 and control Data (Data) transmission, thereby achieving the purpose of saving power consumption when the picture is changed and when the picture is still.
Preferably, the data transmission assembly 9 is further configured to transmit the picture data to the timing controller 10 after the display device is powered on and initially operated, the timing controller 10 outputs a control clock signal and a control data signal to all the source driving chips 11 to control all the source driving chips to operate, and the timing controller outputs the picture data to the source driving chips, and the source driving chips provide the picture data to the display panel for displaying.
The working process of the display device of the application is described in detail as follows:
still taking 4 source driving chips 11 as an example, addresses of 4 source driving chips 11 may be 0000, 0001, 0010, and 0011 in sequence, respectively, after the display device is powered on and initially operates, the data transmission component 9 transmits the picture data to the timing controller 10, the timing controller 10 outputs a control clock signal to select a 0000-0011 address, outputs a control data signal to output a value of 1111 to each address, all the source driving chips all operate and receive the picture data transmitted by the timing controller, when the data transmission component 9 transmits the static picture data to the timing controller 10, the timing controller 10 outputs a control clock signal (for example, a 0000 value) and a control data signal to all the source driving chips 11 after detecting a static picture, so as to transmit an interrupt transmission data instruction to all the source driving chips 11, after all the source driving chips 11 receive the interrupt transmission data instruction, the current frame of picture data is stored in respective Line buffers 110, and transmits a disconnection instruction to the timing controller 10, the source driving chips 11 are disconnected from the timing controller 10, the data transmission signal is stopped from being transmitted to the source driving chips 10, and the Line buffers 110 for displaying the picture data through all the Line driving chips 11;
then, the detecting unit 101 of the timing controller 10 detects whether there is a frame change, if it detects that there is a frame change in the control portion of the 4 th source driver chip, the frame control unit 102 of the timing controller sends an instruction to terminate the transmission of the interrupt data to the 4 th source driver chip, and outputs a control clock signal (e.g., 0011 to select an 0011 address) and a control data signal (e.g., 1111) to the 4 th source driver chip, the 4 th source driver chip is connected to the timing controller 10 again, the timing controller 10 transmits the frame changed data to the 4 th source driver chip, and the 1 st to 3 rd source driver chips continue to maintain the frame data stored in the Line Buffer110 to be output to the display panel for display, thereby saving power consumption when the frame change occurs.
As shown in fig. 2, each source driving chip 11 may further preferably include a control judging unit 111, a control circuit, and a receiver 112. The control circuit includes a resistor R and a transistor Q. The control judging unit 111 is connected with the time schedule controller 10 and the control circuit, the control circuit is connected with the receiver 112, the receiver 112 is further connected with the time schedule controller 10 and the Line Buffer110, a first end of a transistor Q of the control circuit is connected with the control judging unit 111, a second end of the transistor Q is grounded, a third end of the transistor Q is connected with the power supply V1 through a resistor R, and a third end of the transistor Q is further connected with the receiver 112. The control judging unit 111 is used for receiving instructions sent by the timing controller, and the receiver 112 is used for receiving control clock signals, control data signals and picture data sent by the timing controller.
The transistor may be a field effect transistor, the first terminal of the transistor may be a gate of the transistor, the second terminal of the transistor may be a source or a drain of the transistor, and correspondingly, the third terminal of the transistor may be a drain or a source of the transistor.
The working process is as follows: when the picture is a static picture, the timing controller 10 sends an instruction of interrupting data transmission to the control and judgment unit 111, the source driving chip stores the current frame of picture data in the respective Line Buffer110, the control and judgment unit 111 outputs a high level signal according to the instruction of interrupting data transmission, the transistor Q1 is turned on, the power supply terminal of the receiver 112 is grounded, and the receiver 112 stops working, that is, the source driving chip sends an instruction of interrupting to the timing controller to disconnect from the timing controller, and does not receive the data sent by the timing controller 10, and the source driving chip keeps the picture data output to the display panel for display through the picture data stored in the Line Buffer 110.
When the detecting unit 101 detects that a part of the frame controlled by the 4 th source driver chip 11 changes, the frame change controlling unit 102 of the timing controller 10 sends an instruction to the control determining unit 111 to terminate the transmission of the interrupt data to the control determining unit 111, the control determining unit 111 outputs a low level signal according to the instruction to terminate the transmission of the interrupt data, the transistor Q1 is turned off, the power source V1 supplies power to the receiver 112 in the source driver chip, the receiver 112 operates, the timing controller sends a control clock signal and a control data signal to the receiver 112 of the 4 th source driver chip, so that the timing controller 10 selects the 4 th source driver chip and updates the frame changed data in the 4 th source driver chip, and the 1 st to 3 rd source driver chips continue to maintain the frame data stored in the Line Buffer110 to be output to the display panel for displaying, thereby saving power consumption when the frame changes.
Through simulating this application display device and verifying, the actual measurement power consumption contrast before and after the function is opened, can see by the data in table one, the consumption of VDD11 way (VDD 11 way is the original circuit that is used for transmitting source drive chip data for the time schedule controller) saves about 26mW, the total power consumption of assessing display device in step can reduce about 32.5W (according to 80% efficiency assessment), the power consumption of liquid crystal display device has been reduced, display device's quality has been improved, greatly increased display device is at the competitiveness in market.
TABLE Power consumption reduction of VDD11 Path
In summary, in the display device provided in the embodiment of the invention, the data transmission device transmits the frame data to the timing controller, and when the timing controller detects that the data transmission device transmits the static frame data, the timing controller outputs the control clock signal and the control data signal to the at least one source driver chip to send the data transmission interruption command to the at least one source driver chip; the source driving chips receive the data transmission interruption instruction, store the current frame of image data in respective line buffers, and send disconnection instructions to the time sequence controller to disconnect the time sequence controller, the time sequence controller stops sending data signals to the source driving chips, and the source driving chips continuously output the stored current frame of image data to the display panel through the line buffers for display. Therefore, when the static picture is transmitted, the data can be output only by adopting the line buffer of the source electrode driving chip, the power consumption of the display device is reduced, the quality of the display device is improved, and the product competitiveness is improved.
The following are embodiments of the method of the present invention, details of which are not described in detail in the method embodiments, and reference may be made to the corresponding apparatus embodiments described above.
Fig. 3 is a flowchart illustrating steps of a driving method according to an embodiment of the present invention. Referring to fig. 3, the driving method of the present embodiment includes the following steps 401 to 403.
Preferably, before step 401, the method may further include the steps of: the data transmission component transmits the image data to the time sequence controller after the display device is electrified and initially works, the time sequence controller controls all the source electrode driving chips to work and outputs the image data to the source electrode driving chips, and the source electrode driving chips provide the image data for the display panel to display. When the display device is initially operated, the data transmission assembly transmits the picture data to the display panel for display through the time schedule controller and the source driving chip in sequence.
In summary, in the driving method provided in the embodiment of the present invention, the data transmission device transmits the frame data to the timing controller, and when the timing controller detects that the data transmission device transmits the static frame data, the timing controller outputs the control clock signal and the control data signal to the at least one source driver chip to send the data transmission interruption instruction to the at least one source driver chip; the source driving chips receive the data transmission interruption instruction, store the current frame of image data in respective line buffers, and send disconnection instructions to the time sequence controller to disconnect the time sequence controller, the time sequence controller stops sending data signals to the source driving chips, and the source driving chips continuously output the stored current frame of image data to the display panel through the line buffers for display. Therefore, when the static picture is transmitted, the data can be output only by adopting the line buffer of the source electrode driving chip, the power consumption of the display device is reduced, the quality of the display device is improved, and the product competitiveness is improved.
Fig. 4 is a flowchart illustrating steps of a driving method according to another embodiment of the present invention. It is similar to the driving method shown in fig. 3, except that steps 501-503 may be included after the steps of fig. 3.
In step 501, the timing controller detects whether there is a change in the frame, and if so, proceeds to step 502, and preferably, if no change in the frame is detected, proceeds to step 503.
In summary, in the driving method provided in the embodiment of the present invention, when the frame changes, the timing controller is connected to the source driver chip corresponding to the frame change and sends the data after the frame change to the source driver chip corresponding to the frame change, the source driver chip corresponding to the frame change provides the data after the frame change to the display panel, the data after the frame change is output from the corresponding area of the display panel, and the other source driver chips still maintain the frame data stored in the line buffer to be output to the display panel for displaying, so that power consumption is greatly reduced.
Although the present invention has been described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope of the present invention.
Claims (8)
1. A display device, comprising: the display device comprises a data transmission assembly, a time sequence controller, at least one source electrode driving chip and a display panel, wherein the data transmission assembly is connected with the time sequence controller and transmits picture data to the time sequence controller;
the time schedule controller is connected with at least one source electrode driving chip, and when the time schedule controller detects that the data transmission assembly transmits static image data, the time schedule controller outputs a control clock signal and a control data signal to at least one source electrode driving chip so as to send an instruction of interrupting data transmission to at least one source electrode driving chip;
the source driving chips are connected with the display panel and respectively comprise a line buffer arranged inside, the source driving chips receive a data transmission interruption instruction, store the current frame of picture data in the respective line buffers and respectively send a disconnection instruction to the time schedule controller so as to be disconnected from the time schedule controller, the time schedule controller stops sending data signals to the source driving chips, and the source driving chips continuously output the stored current picture data to the display panel through the line buffers for display;
the time schedule controller comprises a detection unit and a picture change control unit;
the detection unit is connected with the picture change control unit and the data transmission component, detects picture changes, and triggers the picture change control unit if the picture changes in one or more source electrode driving chips control areas are detected correspondingly;
the picture change control unit is triggered to be connected with the source electrode driving chip corresponding to the picture change again and sends the data after the picture change to the source electrode driving chip corresponding to the picture change.
2. The display device according to claim 1, wherein each of the source driver chips further comprises a control and judgment unit, a control circuit and a receiver, the control and judgment unit is connected to the timing controller and the control circuit, the control circuit is connected to the receiver, the receiver is further connected to the timing controller and the line buffer, the control and judgment unit receives an instruction from the timing controller, and the receiver receives a control clock signal, a control data signal and picture data from the timing controller.
3. The display device according to claim 2, wherein the control circuit comprises a resistor and a transistor, a first terminal of the transistor of the control circuit is connected to the control judgment unit, a second terminal of the transistor is grounded, a third terminal of the transistor is connected to a power supply through the resistor, and the third terminal of the transistor is further connected to the receiver.
4. The display device according to claim 3, wherein the transistor is a field-effect transistor, wherein a first terminal of the transistor is a gate of the transistor, wherein a second terminal of the transistor is a source or a drain of the transistor, and wherein a third terminal of the transistor is a drain or a source of the transistor.
5. The display device according to claim 1, wherein the timing controller comprises a detection unit, the detection unit is connected to the data transmission device, the detection unit is continuously disconnected from the source driver chip if the detected frame is unchanged, and the source driver chip continuously outputs the stored current frame data to the display panel through the row buffer for display.
6. A driving method, characterized in that it comprises:
the data transmission assembly transmits image data to the time schedule controller, and the time schedule controller outputs a control clock signal and a control data signal to at least one source electrode driving chip when detecting that the data transmission assembly transmits static image data so as to send an interrupt data transmission instruction to the at least one source electrode driving chip;
the source driving chips receive an interrupt transmission data instruction, store the current frame of image data in respective line buffers, and send a disconnection instruction to the time sequence controller to disconnect the time sequence controller, the time sequence controller stops sending data signals to the source driving chips, and the source driving chips continuously output the stored current frame of image data to the display panel through the line buffers for display;
the time schedule controller detects whether the picture changes or not;
if the source driving chips corresponding to the frame changes are detected to control the frame changes of the area, the time schedule controller sends an instruction of ending the interruption of data transmission to the source driving chips corresponding to the frame changes, outputs a control clock signal and a control data signal to the source driving chips corresponding to the frame changes, establishes connection with the source driving chips corresponding to the frame changes again and sends data after the frame changes to the source driving chips corresponding to the frame changes, the source driving chips corresponding to the frame changes provide the data after the frame changes to the display panel, the data after the frame changes are output by the corresponding area of the display panel, and other source driving chips except the source driving chips corresponding to the frame changes continue to maintain the frame data stored in the line buffer to be output to the display panel for display.
7. The driving method as claimed in claim 6, wherein the detecting of the frame variation by the timing controller comprises:
when the time schedule controller detects that the picture is unchanged, the time schedule controller is continuously disconnected from the source electrode driving chips, and all the source electrode driving chips continuously output the stored current picture data to the display panel through the line buffer for display.
8. The driving method according to claim 6, further comprising:
the data transmission assembly transmits picture data to the time sequence controller after the display device is electrified and initially works, the time sequence controller controls all the source electrode driving chips to work and outputs the picture data to the source electrode driving chips, and the source electrode driving chips provide the picture data for the display panel to display.
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| CN202110130396.1A CN112951171B (en) | 2021-01-29 | 2021-01-29 | Display device and driving method |
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| CN202110130396.1A CN112951171B (en) | 2021-01-29 | 2021-01-29 | Display device and driving method |
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| CN112951171B true CN112951171B (en) | 2022-12-20 |
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| CN103971647A (en) * | 2013-01-24 | 2014-08-06 | 联咏科技股份有限公司 | Display driver device |
| CN104078016A (en) * | 2014-06-19 | 2014-10-01 | 京东方科技集团股份有限公司 | Time sequence control method, time sequence controller and display device |
| CN105869587B (en) * | 2016-05-18 | 2018-09-25 | 深圳天珑无线科技有限公司 | Display drive method and display drive apparatus |
| CN107799053A (en) * | 2017-11-13 | 2018-03-13 | 合肥京东方光电科技有限公司 | Control method and apparatus, time schedule controller, the display device of refreshing frequency |
| CN108877646B (en) * | 2018-07-26 | 2020-03-06 | 厦门凌阳华芯科技有限公司 | Display circuit and display |
| CN112017612A (en) * | 2020-09-10 | 2020-12-01 | Tcl华星光电技术有限公司 | Time schedule controller, control method thereof and display device with time schedule controller |
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