CN112331146A - Display panel driving chip, control method and display panel - Google Patents
Display panel driving chip, control method and display panel Download PDFInfo
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- CN112331146A CN112331146A CN202011296319.5A CN202011296319A CN112331146A CN 112331146 A CN112331146 A CN 112331146A CN 202011296319 A CN202011296319 A CN 202011296319A CN 112331146 A CN112331146 A CN 112331146A
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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]
- G09G3/3225—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] 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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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Abstract
The embodiment of the invention provides a driving chip of a display panel, a control method and the display panel, wherein the driving chip image processing module comprises a plurality of image processing sub-modules, the image processing sub-modules respectively receive clock signals, and the image processing sub-modules are used for processing display data; a controller, the image processing module coupled to the controller; when the display data are screen display data, the controller receives a screen display instruction and closes a part of clock signals of the image processing sub-modules according to the screen display instruction so as to enable a part of the image processing sub-modules to stop data processing. The driving chip provided by the embodiment can save power consumption caused by register jump caused by clock turnover in the module to be turned off, which is irrelevant to the AOD mode, thereby prolonging the standby time and meeting the requirements of users on low power consumption and long standby.
Description
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a driving chip of a display panel, a control method and the display panel.
Background
In order to save power consumption, an Active-Matrix Organic Light-Emitting Diode (AMOLED) technology is generally used to keep a part of a screen normally bright in a standby state for displaying basic information such as time, weather, missed calls, and the like.
However, although the AOD mode can display basic information under the condition of not completely waking up the driver chip, and meets a certain low power consumption requirement, compared with the normal wake-up mode of the driver chip, in the prior art, the power consumption of the AOD mode is very high, even up to 100 milliwatts, which affects the standby time of the whole machine, and cannot meet the requirement of a user for low power consumption and long standby.
Disclosure of Invention
The embodiment of the invention provides a driving chip of a display panel, a control method and the display panel, which are used for reducing the power consumption of an AOD (active optical device) mode and prolonging the standby time of the whole machine, thereby meeting the requirements of a user on low-power-consumption long-standby of a mobile phone product.
In a first aspect, an embodiment of the present invention provides a driving chip of a display panel, where the driving chip includes:
the image processing module comprises a plurality of image processing sub-modules, the image processing sub-modules respectively receive clock signals, and the image processing sub-modules are used for processing display data;
a controller, the image processing module coupled to the controller; wherein the content of the first and second substances,
and when the display data is screen display data, the controller receives a screen display instruction and closes a part of clock signals of the image processing sub-modules according to the screen display instruction so as to enable a part of the image processing sub-modules to stop data processing.
In a possible design, the driving chip further includes a gamma correction module, and the gamma correction module is configured to correct the data to be displayed output by the image processing module and send the data to be displayed to a display panel for displaying.
In one possible design, the image processing submodule includes a switching unit; the switch unit is used for being switched on or off according to the output signal of the controller; the image processing submodule is used for receiving the clock signal through the switch unit.
In one possible design, one of the image processing sub-modules is a pixel rendering module, and the pixel rendering module receives the raster display data and renders the raster display data.
In one possible design, one of the image processing modules is an image compensation module, and the image compensation module receives the rendered message screen display data and compensates the rendered message screen display data.
In a possible design, the driver chip further includes a preset lookup table, and the preset lookup table is configured to provide pre-processing data corresponding to the information screen display data when the image processing sub-module processes the information screen display data.
In one possible design, the preprocessed data stored in the preset lookup table includes any one or more of time display data of numbers, dial radius, circle center, hour hand and minute hand.
In a second aspect, embodiments of the present invention provide a display panel, such as the driving chip of the first aspect and various possible designs of the first aspect.
In a third aspect, an embodiment of the present invention provides a method for controlling a display panel, which is applied to the driver chip according to the first aspect and various possible designs of the first aspect, and the method includes:
the image processing submodule respectively receives a clock signal and processes display data under the control of the clock signal;
and when the display data is screen display data, the controller receives a screen display instruction and closes a part of clock signals of the image processing sub-modules according to the screen display instruction so as to enable a part of the image processing sub-modules to stop data processing.
The driving chip of the display panel, the control method thereof and the display panel provided by the embodiment include: the image processing module comprises a plurality of image processing sub-modules, the image processing sub-modules respectively receive clock signals, and the image processing sub-modules are used for processing display data; a controller, the image processing module coupled to the controller; when the display data are screen display data, the controller receives a screen display instruction and closes a part of clock signals of the image processing sub-modules according to the screen display instruction so as to enable a part of the image processing sub-modules to stop data processing. The driving chip provided by the embodiment can save power consumption caused by register jump caused by clock turnover in the module to be turned off, which is irrelevant to the AOD mode, thereby prolonging the standby time and meeting the requirements of users on low power consumption and long standby.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display system of a mobile phone according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a driving chip of a display panel according to an embodiment of the invention;
fig. 3 is a schematic diagram of a display system of a mobile phone according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a display system of a mobile phone according to another embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a driving chip 20 of a display panel according to yet another embodiment of the present invention
FIG. 6 is a diagram illustrating clock connections of registers of an image processing module according to another embodiment of the present invention;
fig. 7 is a schematic structural diagram of a driving chip of a display panel according to yet another embodiment of the present invention;
fig. 8 is a schematic diagram of a display system of a mobile phone according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic diagram of a mobile phone display system according to an embodiment of the present invention. As shown in fig. 1, the display system of the mobile phone includes a host, a data interface, a driver chip 10 and a display module. The driving chip 10 includes a compression module, a storage module, an image processing module including a plurality of image processing sub-modules, a gamma correction module, and a channel selection module. The image processing module includes, but is not limited to, an image scaling module, a color enhancement module, a crack detection module, a pixel rendering module and an image compensation module, and the plurality of image processing modules may be applied simultaneously or selectively according to the requirements of image display.
In a specific implementation process, the host transmits image data of a picture to be displayed to a storage module (e.g., a Static Random-Access Memory (SRAM)) through a data Interface, e.g., a Mobile Industry Processor Interface (MIPI), and if the image data is in a compressed format, the image data may be directly stored in the storage module, and if the image data is not compressed, the image data may be compressed by the image compression module and then stored in the storage module. The image data stored in the storage module is processed by the image processing modules, then transmitted to the gamma correction module for gamma correction, and transmitted to the display component for display through the channel selection module. Of course, the image processing module may be selected according to the user's needs.
The inventor researches and discovers that the circuit power consumption in an Always On Display (AOD) mode is mainly divided into static power consumption and dynamic power consumption. The static power consumption is power consumption caused by a power supply voltage required when a circuit (for example, each block in the driver chip 10) operates. In order to ensure that the mobile phone system drives some functional modules (for example, the image processing modules) in the chip 10 to normally operate in the AOD mode and can enter the normal mode at any time, the static voltage cannot be turned off, in this case, there may be a case of leakage of the logic circuit for supplying power, because the requirement is fixed, and if the data stored inside is lost after the static voltage is turned off, the data must be called again after the AOD is exited, the start-up time is very long, and some irrecoverable, the power consumption of the static voltage may not be considered for optimization; the dynamic power consumption refers to power consumption generated when the driver chip 10 is in a jump state (operating state). When the mobile phone system displays in the AOD mode, only a part of the functional modules (such as the gamma correction module and the channel selection module) may be applied, and the number of the applied modules is small.
Therefore, when the display panel is in the AOD mode, some image processing modules in the working process may not be used, and the selection condition of the image processing modules may be determined according to the display requirement of the user. Under the AOD mode, if the three image processing modules are still in the jump state (working state), the dynamic power consumption is increased, so that the standby time of the mobile phone is shortened. Therefore, the present embodiment provides a display control method to reduce power consumption, prolong standby time, and meet the requirements of a user for low power consumption and long standby.
In this embodiment, when the display panel of the mobile phone system is in the AOD mode, the internal clocks of the functional modules unrelated to the AOD mode are controlled to be turned off, that is, when the input data of the register is invalid, the clocks are controlled not to be turned over, so that power consumption caused by the clock turning over of the functional modules can be reduced.
The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.
Fig. 2 is a schematic structural diagram of a driving chip of a display panel according to an embodiment of the present invention. As shown in fig. 2, the driving chip 20 includes:
the image processing module 202 comprises a plurality of image processing sub-modules, wherein the image processing sub-modules respectively receive clock signals and are used for processing display data;
a controller 201, the image processing module 202 being coupled to the controller 201; wherein the content of the first and second substances,
when the display data is the message screen display data, the controller 201 receives a message screen display instruction and closes a clock signal of a part of the image processing sub-modules according to the message screen display instruction, so that the data processing of the part of the image processing sub-modules is stopped.
In this embodiment, the message display instruction is used to instruct the image processing module 202 in the driver chip 20 to adjust the clock signal, where the image processing module is irrelevant to the normal operation of the AOD mode, i.e., does not affect the normal operation of the AOD mode in the AOD mode.
For example, the image processing module 202 in this embodiment may include a plurality of image processing sub-modules, such as an image scaling module, a color enhancement module, a crack detection module, a pixel rendering module, and an image compensation module. The module to be shut down may be selected according to a user's requirement, for example, if the user needs to perform pixel rendering processing and compensation processing on the display content in the AOD mode, the pixel rendering module and the image compensation module may keep working normally, and the remaining image scaling module, the color enhancement module and the crack detection module are used as the module to be shut down, and their identifiers are added to the information screen display instruction, and the controller 201 generates the clock enable signals of these modules according to the relevant identifiers, so as to shut down the clock signals input by the registers in these modules, i.e., stop the inversion, thereby saving power consumption.
In practical applications, a digital identifier may be set for each image processing module 202 to distinguish different image processing modules 202. After the controller 201 receives the message screen display instruction, according to the identifier in the message screen display instruction, the clock enable signal of the image processing module 202 represented by the identifier may be generated. The clock signal provided to the image processing module 202 can be turned off, i.e., turned over is stopped, by the enable signal.
Optionally, the specific implementation manner of the controller 201 receiving the message screen display instruction and closing part of the clock signal of the image processing sub-module according to the message screen display instruction may be: and controlling the clock signal input by the register in each module to be closed to be always kept at a high level or a low level according to the display instruction of the message screen.
The driving chip 20 provided in this embodiment includes: the image processing module 202 comprises a plurality of image processing sub-modules, wherein the image processing sub-modules respectively receive clock signals and are used for processing display data; a controller 201, the image processing module 202 being coupled to the controller 201; when the display data is osd display data, the controller 201 receives an osd display instruction and closes a clock signal of a part of the image processing sub-modules according to the osd display instruction, so that the data processing of the part of the image processing sub-modules is stopped. The driving chip 20 provided by this embodiment can save power consumption caused by register jump caused by clock flipping in the module to be turned off, which is irrelevant to the AOD mode, thereby prolonging the standby time and meeting the requirements of the user for low power consumption and long standby.
In a specific embodiment, fig. 3 is a schematic diagram of a display system of a mobile phone according to another embodiment of the present invention, as shown in fig. 3, the driving chip 20 further includes a gamma correction module, and the gamma correction module is configured to correct the data to be displayed output by the image processing module 202 and send the data to be displayed to a display panel for displaying.
In a specific embodiment, as shown in fig. 3, one of the image processing sub-modules in the image processing module 202 is a pixel rendering module, and the pixel rendering module receives the raster display data and renders the raster display data.
In a specific embodiment, as shown in fig. 3, one of the image processing sub-modules 202 in the image processing module 202 is an image compensation module, and the image compensation module receives the rendered screenshot display data and compensates the rendered screenshot display data.
In practical application, the pixel rendering module and the image compensation module can work simultaneously under the action of information screen. For example, as shown in fig. 3, an image scaling module, a color enhancement module, a crack detection module, a pixel rendering module, and an image compensation module in the image processing module 202 are all set as modules to be closed, and in a specific implementation process, a host transmits image data of a required display screen to a storage module (e.g., Static Random-Access Memory (SRAM)) through a data Interface, e.g., Mobile Industry Processor Interface (MIPI), and if the image data is in a compressed format, the image data may be directly stored in the storage module, and if the image data is not compressed, the compressed image data may be stored in the storage module after being compressed by the image compression module. The image data stored by the storage module is transmitted to the gamma correction module for gamma correction, and the corrected image data is sent to the display component for display through the channel selection module. In the process, each module to be closed is irrelevant to normal display in the AOD mode, namely, in order to save power consumption, the controller 201 generates a corresponding clock enable signal to control the clock input by the register in each module to be closed to stop overturning, so that dynamic power consumption is saved, the standby time is prolonged, and the requirements of a user on low-power consumption and long standby are met.
To meet the display requirement of the user, part of the image processing sub-modules may be reserved for normal application to perform related processing on image data to be displayed, for example, fig. 4 is a schematic diagram of a Mobile phone display system according to another embodiment of the present invention, as shown in fig. 4, the image scaling module, the color enhancement module, and the crack detection module in the image processing module 202 are all configured as modules to be turned off, and the pixel rendering module and the image compensation module are normally applied, in a specific implementation process, the host transmits image data of a required display picture to the storage module (e.g., Static Random-Access Memory (SRAM)) through a data Interface, for example, a Mobile Industry Processor Interface (MIPI)), and if the image data is in a compressed format, the image data may be directly stored and stored in the storage module, if the image data is not compressed, the compressed image data can be stored in the storage module after being compressed by the image compression module. The image data stored by the storage module is transmitted to the pixel rendering module for rendering, the rendered image data is subjected to mura compensation by the image compensation module, then is transmitted to the gamma correction module for gamma correction, and is transmitted to the display assembly for display by the channel selection module. In the process, each module to be closed is irrelevant to normal display in the AOD mode, namely, in order to save power consumption, the controller 201 generates a corresponding clock enable signal to control the clock input by the register in each module to be closed to stop overturning, so that dynamic power consumption is saved, the standby time is prolonged, and the requirements of a user on low-power consumption and long standby are met.
Fig. 5 is a schematic structural diagram of a driving chip 20 of a display panel according to another embodiment of the present invention, and as shown in fig. 5, the image processing sub-module includes a switch unit; the switch unit is used for being turned on or off according to an output signal of the controller 201; the image processing submodule is used for receiving the clock signal through the switch unit.
In a specific implementation process, each image processing submodule includes a switch unit, and the controller 201 sends a clock control signal to the switch unit of the corresponding image processing submodule, so as to control the clock signal by controlling the on/off of the switch unit, thereby controlling whether the image processing submodule stops data processing.
In this embodiment, the switch unit may be a gate circuit, and fig. 6 is a schematic diagram of clock connection of a register of the image processing module 202 according to still another embodiment of the present invention, as shown in fig. 6, the switch unit may be an and gate, of course, it should be noted that fig. 6 is only an example, and a device connected to the register array is not limited to an and gate, and may be another device, such as a nand gate, an or gate, a nor gate, and the like, which can input an EN signal and control the input clock signal CLK. This embodiment is not limited to this.
In a specific implementation process, as shown in fig. 6, the image processing sub-module includes a register array, where the register array is used to store processed image data, and data is input through a data input end DI of the register array and output through a data output end DO. The operation clock of the register is input through the port CK. When the image processing submodule works normally, the EN input of the AND gate connected with the CK end is in a high level, the clock signal CLK can be inverted normally and is input to the CK end of the register array, and the register array carries out data input and output. When the image processing module 202 is a module to be turned off and needs to control its clock to stop inverting in the AOD mode, the EN input of the and gate may be set to a low level, the output of the and gate is set to a low level, the clock signal input to the CK end of the register array stops inverting, the low level is maintained, and the register array cannot stop inputting and outputting data. Therefore, the purposes of reducing power consumption and prolonging standby can be achieved, and the requirements of users on low-power-consumption long standby are met. It is understood that the image processing sub-module may be any one of a plurality of image processing sub-modules in the image processing module 202 of the driver chip 20, such as an image scaling module, a color enhancement module, a crack detection module, a pixel rendering module, an image compensation module, and the like.
It should be noted that the switch unit may also be disposed in the controller 201, and the controller 201 outputs the clock signal that is controlled by the switch unit to be turned on or turned off, that is, the clock signal that is turned over normally, or the clock signal that is at a high level or a low level is sent to the corresponding image processing sub-module, so as to control the image processing sub-module to turn on or stop data processing.
Fig. 7 is a schematic structural diagram of a driving chip of a display panel according to another embodiment of the present invention, as shown in fig. 7, on the basis of the above embodiment, for example, on the basis of the embodiment shown in fig. 2, in this embodiment, a preset lookup table 203 is added to improve the efficiency of data processing. Specifically, the driving chip 20 further includes a preset lookup table 203, where the preset lookup table 203 is configured to provide preprocessing data corresponding to the information screen display data when the image processing sub-module processes the information screen display data.
Optionally, the preprocessed data stored in the preset lookup table 203 includes time display data such as numbers, dial radii, circle centers, hour hands, minute hands, and the like.
Optionally, the pre-processing data comprises rendering pre-processing data and/or compensation pre-processing data. In practical application, the pixel rendering module may obtain rendering preprocessing data from the preprocessing data to save the time of rendering processing, and the image compensation module may obtain compensation preprocessing data from the preprocessing data to save the time of compensation processing.
Optionally, the data to be displayed includes time information, and the time information is composed of at least one time display element; before the retrieving, according to the data to be displayed, the preprocessed data corresponding to the data to be displayed from the preset lookup table 203, the method includes: preprocessing a plurality of time display elements to obtain preprocessed data corresponding to the plurality of time display elements; pre-processing data corresponding to the plurality of time display elements is pre-stored in the preset lookup table 203.
Optionally, the time display element comprises at least one of: numbers, dial radius, circle center, hour hand and minute hand.
In practical applications, if the time information is displayed in a digital display clock manner, the time display elements may include 0 to 9 arabic numerals, and the time display elements subjected to the rendering preprocessing are stored in the preset lookup table 203. If the time information is displayed in a display mode of the dial, rendering preprocessing data of the radius, the circle center, the hour hand and the minute hand of the dial can be prestored.
Fig. 8 is a schematic diagram of a mobile phone display system according to another embodiment of the present invention, and the application of the preset lookup table 203 is described in detail below with reference to fig. 8, as shown in fig. 8, taking data to be displayed as time information as an example, if a user requires rendering and compensating the time information to be displayed, in a specific implementation process, first, after performing rendering preprocessing on each time display element related to the time information in advance, the rendering preprocessed data is stored in the preset lookup table 203, and after performing compensating processing on each time display element in advance, the compensating preprocessed data is stored in the preset lookup table 203 in advance, and the time display elements may include numbers, a dial radius, a circle center, an hour hand, and a minute hand. The numbers here may be 0 to 9, 10 arabic numerals. When data to be displayed in the AOD mode is processed, the host transmits image data of the data to be displayed to a storage module (e.g., a Static Random-Access Memory (SRAM)) through a data Interface, e.g., a Mobile Industry Processor Interface (MIPI), and if the image data is in a compressed format, the image data may be directly stored in the storage module, and if the image data is not compressed, the image data may be compressed by the image compression module and then stored in the storage module. The image data stored by the storage module is transmitted to the pixel rendering module, the pixel rendering module calls corresponding rendering preprocessing data from the preset lookup table 203 according to display elements included by the image data, the rendering preprocessing data and the original image data are overlapped and then transmitted to the image compensation module, the image compensation module calls corresponding compensation preprocessing data from the preset lookup table 203 according to the display elements included by the image data, the compensation preprocessing data and the received image data are overlapped to obtain gamma correction data to be corrected, the gamma correction data to be corrected are transmitted to the gamma correction module to be subjected to gamma correction, and the corrected image data are transmitted to the display assembly for display through the channel selection module. In the process, because the data to be displayed does not need to be subjected to rendering processing and compensation processing, only the preprocessing data of the relevant display elements is called from the preset lookup table 203, and the power consumption of the content to be displayed for rendering processing and compensation processing can be saved, so that the dynamic power consumption is saved, the standby time is prolonged, and the requirements of a user on low-power consumption and long standby are met.
It can be understood that, according to the display requirement of the user, only one item of preprocessing may be performed on the display element concerned, for example, only rendering preprocessing is performed, and then the corresponding rendering preprocessing data is stored in the preset lookup table 203, or only compensation preprocessing is performed and the compensation preprocessing data is stored in the preset lookup table 203. In addition, the data may be stored in different preset lookup tables 203 according to the size of the data, or may be stored in the same preset lookup table 203, which is not limited in this embodiment.
It should be noted that, in this embodiment, the data to be displayed may also be weather information, and accordingly, each weather display element constituting the weather information may be pre-processed in advance and stored in the preset lookup table 203, so as to save processing power consumption in the AOD mode and prolong the standby time. The weather display elements can include graphic information such as sunny, cloudy, rain and fog, and also can include digital information such as temperature and unit information such as degree centigrade. The content of the specifically included elements may be selected according to actual requirements, which is not limited in this embodiment.
The driving chip 20 of the display panel provided by this embodiment can pre-process the display elements that need to be specially processed in advance when the user proposes a specific display requirement, and store the pre-processed data in the preset lookup table 203, so that when receiving the data to be displayed, the pre-processed data of the display elements corresponding to the data to be displayed is directly called from the preset lookup table 203, thereby saving the power consumption for performing the specific processing on the data to be displayed, saving the dynamic power consumption, prolonging the standby time, and satisfying the requirement of the user for low power consumption and long standby.
The embodiment of the present invention further provides a control method of a display panel, which is applied to the driving chip 20 of the display panel provided in the embodiments shown in fig. 2 to 8, and the method includes:
the image processing submodule respectively receives a clock signal and processes display data under the control of the clock signal;
when the display data is the message screen display data, the controller 201 receives a message screen display instruction and closes a clock signal of a part of the image processing sub-modules according to the message screen display instruction, so that the data processing of the part of the image processing sub-modules is stopped.
According to the control method of the display panel provided by the embodiment, the controller 201 closes the clock signal of the partial image processing submodule according to the message screen display instruction so as to stop data processing of the partial image processing submodule, and power consumption caused by register jump caused by clock inversion in the module to be closed, which is irrelevant to the AOD mode, can be saved, so that the standby time is prolonged, and the requirements of a user on low power consumption and long standby are met.
Optionally, the image processing sub-module comprises a switch unit; the method further comprises the following steps: the switch unit is used for being turned on or off according to an output signal of the controller 201; the image processing submodule receives the clock signal through the switch unit.
The control method of the display panel provided in the embodiment of the present invention is applied to the driving chip 20 of the display panel provided in the embodiment shown in fig. 2 to 8, and the implementation principle and the technical effect are similar, and are not described herein again.
The present embodiment further provides a display panel including the driving chip 20 shown in fig. 2 to 8.
The display panel provided by this embodiment, by setting the driving chip 20, can turn off the clock signal of the partial image processing sub-modules according to the message screen display instruction through the controller 201, so that the partial image processing sub-modules stop data processing, and can save power consumption caused by register jump caused by clock inversion in the module to be turned off, which is irrelevant to the AOD mode, thereby prolonging the standby time and meeting the requirements of users on low power consumption and long standby.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A driving chip of a display panel, the driving chip comprising:
the image processing module comprises a plurality of image processing sub-modules, the image processing sub-modules respectively receive clock signals, and the image processing sub-modules are used for processing display data;
a controller, the image processing module coupled to the controller; wherein the content of the first and second substances,
and when the display data is screen display data, the controller receives a screen display instruction and closes a part of clock signals of the image processing sub-modules according to the screen display instruction so as to enable a part of the image processing sub-modules to stop data processing.
2. The driving chip of claim 1, further comprising a gamma correction module, configured to correct the data to be displayed output by the image processing module and send the data to be displayed to a display panel for displaying.
3. The driving chip of the display panel according to claim 1, wherein the image processing sub-module includes a switching unit; the switch unit is used for being switched on or off according to the output signal of the controller; the image processing submodule is used for receiving the clock signal through the switch unit.
4. The driving chip of the display panel according to claim 1, wherein one of the image processing sub-modules is a pixel rendering module, and the pixel rendering module receives the raster display data and renders the raster display data.
5. The driving chip of the display panel according to claim 4, wherein one of the image processing modules is an image compensation module, and the image compensation module receives the rendered screenshot display data and compensates the rendered screenshot display data.
6. The driving chip of the display panel according to claim 4 or 5, wherein the driving chip further comprises a preset lookup table, and the preset lookup table is used for providing pre-processing data corresponding to the information screen display data when the image processing sub-module processes the information screen display data.
7. The driving chip of the display panel according to claim 6, wherein the preprocessed data stored in the preset lookup table includes any one or more of time display data of numbers, dial radii, circle centers, hour hands and minute hands.
8. A display panel comprising the driving chip according to any one of claims 1 to 5.
9. A control method of a display panel, applied to a driving chip of the display panel according to any one of claims 1 to 5, the method comprising:
the image processing submodule respectively receives a clock signal and processes display data under the control of the clock signal;
and when the display data is screen display data, the controller receives a screen display instruction and closes a part of clock signals of the image processing sub-modules according to the screen display instruction so as to enable a part of the image processing sub-modules to stop data processing.
10. The control method according to claim 9, wherein the driving chip further includes: presetting a lookup table; the image processing sub-module is a pixel rendering module or an image compensation module, and the method further comprises: and the preset lookup table provides preprocessing data corresponding to the message screen display data when the image processing submodule processes the message screen display data.
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