CN109389930A - For showing the low-power drive system and sequence controller of equipment - Google Patents
For showing the low-power drive system and sequence controller of equipment Download PDFInfo
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- CN109389930A CN109389930A CN201810874853.6A CN201810874853A CN109389930A CN 109389930 A CN109389930 A CN 109389930A CN 201810874853 A CN201810874853 A CN 201810874853A CN 109389930 A CN109389930 A CN 109389930A
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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
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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]
- G09G3/3275—Details of drivers for data electrodes
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Liquid Crystal Display Device Control (AREA)
- Control Of El Displays (AREA)
Abstract
The invention discloses for showing the low-power drive system and sequence controller of equipment.Low-power drive system may include sequence controller and Source drive, wherein, sequence controller is configured to that display pattern is divided into static schema and dynamic mode based on the difference between previous row data and Current Datarow, and data packet is transmitted, one in the first option information corresponding with static schema and the second option information corresponding with dynamic mode is applied in data packet；Source drive is configured to received data packet, and executes low-power mode corresponding with static schema according to the first option information, or execute adaptive charge corresponding with dynamic mode according to the second option information and share.
Description
Technical field
This disclosure relates to low-power actuation techniques, and system is driven more particularly, to the low-power for display device
System and sequence controller.
Background technique
Display device includes sequence controller, Source drive and display panel.Sequence controller may be designed to show number
As data packet Source drive is supplied to according to, control data and clock.Source drive receives display data, and will be with display number
Display panel is supplied to according to corresponding source signal.Display panel shows screen corresponding with source signal.
Display panel needs the technology for reducing the power consumption in various elements.Specifically, in order to reduce timing control
The power consumption of device and Source drive rank processed, has been carried out various trials.
Summary of the invention
Various embodiments are related to low-power drive system and sequence controller for showing equipment, the power drive system
System and sequence controller can recognize display pattern, and will include that the option information of information of display pattern about identification transmits
To Source drive, to reduce the power consumption of Source drive.
In addition, various embodiments are related to the low-power drive system for showing equipment, which can
Offer includes the data packet for reducing the option information of power consumption in response to display pattern, and according to option information to defeated
Charge Compliance control is executed out, or to one or more in output buffer, gamma buffer and midway drive voltage buffer
A execution current control, to reduce power consumption.
In embodiments, for showing that the low-power drive system of equipment may include sequence controller and Source drive,
Wherein, sequence controller is configured to that display pattern is divided into static mould based on the difference between previous row data and Current Datarow
Formula and dynamic mode, and transmission data packet, the first option information corresponding with static schema and corresponding with dynamic mode
The second option information in one be applied in data packet；And Source drive is configured to received data packet, and according to
One option information executes low-power mode corresponding with static schema, or is executed and dynamic mode phase according to the second option information
Corresponding adaptive charge is shared.
In another embodiment, for showing that the sequence controller of equipment may include pixel value storage unit, operation list
Member and option provide unit, wherein pixel value memory cell arrangements are at storage previous row data and Current Datarow, and provide
Previous row data and Current Datarow are to be mapped；Operating unit is configured to according between previous row data and Current Datarow
Comparison result, calculate by the charge on Current Datarow it is shared caused by power gain and power loss, or it is total in charge
It enjoys applied to the first maximum variation for calculating Source drive output in the case where Current Datarow, and shares in charge and do not answer
The second maximum variation of Source drive output is calculated in the case where for Current Datarow；And option provides unit and is configured to:
When display pattern is dynamic mode, whether it is applied to previous row data and power gain and power by reference to charge is shared
Comparison result between loss, provide about whether by charge sharing application in the second option information of Current Datarow；And
When display pattern is static schema, provide according to shared the first maximum change for whether being applied to previous row data and selecting of charge
Change and is used as the first option information with one in the second maximum variation.
Detailed description of the invention
Fig. 1 is the block diagram for showing the low-power drive system for display device of embodiment according to the present invention.
Fig. 2 is the flow chart for showing the low power driving method of the embodiment according to Fig. 1.
Fig. 3 is the block diagram for showing the sequence controller of Fig. 1.
Fig. 4 is the flow chart for showing adaptive charge Compliance control operation.
Fig. 5 and Fig. 6 show panel construction.
Fig. 7 is for describing to be applied to the shared block diagram of unique charge of the invention.
Fig. 8 and Fig. 9 is the waveform diagram for describing charge shared power save and power consumption.
Figure 10 is the flow chart for showing low-power mode control operation.
Figure 11 is the waveform diagram for describing to control operation according to the low-power mode of the output level of Source drive.
Figure 12 is the diagram for showing the output variation slope of Source drive corresponding with option information at any time.
Specific embodiment
Embodiments of the present invention are described in detail hereinafter with reference to attached drawing.It uses in the specification and claims
Term is not limited to typical dictionary definition, but must be construed to meet the meaning and concept of technical concept of the invention.
Embodiment described in this specification and configuration shown in the accompanying drawings are the preferred embodiment of the present invention, not generation
Table overall technology theory of the invention.Therefore, submit the application time point, can provide can replace the embodiment and
The various equivalents of configuration and change.
Fig. 1 shows the low-power drive system for display device of embodiment according to the present invention.
With reference to Fig. 1, low-power drive system includes sequence controller 10, Source drive 20 and display panel 30.
Sequence controller 10 generates data packet PKT using the display data being received externally, and by data packet PKT
It is supplied to Source drive 20.
The data packet PKT generated by sequence controller 10 may include display data and control data, and controlling data can
Various segments including the option information for distinguishing power control mode.
Power control mode can be divided into low-power mode control operation and the operation of adaptive charge Compliance control.Option information
It can indicate low-power mode control or adaptive charge Compliance control, and there is the value based on preset protocol.In addition, option is believed
Breath may include and being therefore applied to data packet PKT in control data.
Source drive 20 can be believed from 10 received data packet PKT of sequence controller, and by source corresponding with display data
Number Sout is exported to display panel 30.Source drive 20 can be configured to will show data conversion at source signal Sout process and
Power control mode corresponding with the control option information of data is executed during exporting the process of source signal Sout.
Source drive 20 may include latch, shift register, digital analog converter and output buffer, to convert display
Data.Source drive 20 may also include gamma buffer and midway drive voltage (HVDD) buffer, wherein gamma buffer is used
In gamma voltage is provided to digital analog converter, midway drive voltage (HVDD) buffer is used to driving voltage being provided to output
Buffer.
Due to latch, shift register, digital analog converter, output buffer, gamma buffer and midway drive voltage
Buffer is the component being generally used in Source drive 20, therefore omits detailed description thereof and description herein.
Two-d display panel can be used to implement in display panel 30.For example, using Organic Light Emitting Diode (OLED), shining
Diode (LED) or liquid crystal display panel (LCD), the display panel including pixel can be used as display panel 30.
In the configuration of Fig. 1, the low-power drive system for display device of embodiment according to the present invention includes
Sequence controller 10 and Source drive 20.
Reference Fig. 2 description is used for the operation of the low-power drive system of display device.
Firstly, sequence controller 10 display pattern is divided into based on the difference between previous row data and Current Datarow it is quiet
Morphotype formula and dynamic mode, and transmit data packet PKT, wherein the first option information corresponding with static schema and with it is dynamic
One in corresponding second option information of morphotype formula is applied to data packet PKT.
Sequence controller 10 executes control process and control process may include step S10: execution pattern identification, and
The data packet PKT comprising control data is provided based on pattern-recognition, which has the first option information or the second choosing
Item information.
Source drive 20 can receive data packet PKT, and identify function according to the first option information or the second option information
Rate control model.More specifically, Source drive 20 executes low-power mould corresponding with static information according to the first option information
Formula operation, or adaptive charge sharing operation corresponding with dynamic mode is executed according to the second option information.
That is, Source drive 20 executes driving process according to power control mode identification, and driving process includes: basis
Display pattern operates to identify the step S20 of power control mode, execute low-power mode when display pattern is static schema
Step S22, and the step S23 of adaptive charge sharing operation is executed when display pattern is dynamic mode.
By comparing the operation of previous row data and Current Datarow, display pattern can be determined as static schema and dynamic
One in mode.
At this point, previous row data and current line number will definitely be set as distinguishing static schema and dynamic mode and calibrating really
Data variation between, and the data variation for determining static schema and dynamic mode reference value according to designer's
Intention is set as various values.
Static schema can indicate that source signal Sout corresponding with the output of Source drive 20 is constantly retained, because preceding
Data variation between data line and Current Datarow is smaller.
Dynamic mode can indicate that source signal Sout corresponding with the output of Source drive 20 is swung, because previous
Data variation between row data and Current Datarow is larger.
In the present embodiment, when display pattern is static schema, sequence controller 10 is provided for by power control
Mode decision is that the first option information of low-power mode control operation and Source drive 20 are held in response to the first option information
Row low-power mode reduces power consumption will pass through the magnitude of current of output of the reduction for retaining Current Datarow.
On the other hand, when display pattern is dynamic mode, sequence controller 10 is provided for sentencing power control mode
Break and is used for for the second option information and Source drive 20 of adaptive charge sharing operation in response to the execution of the second operation information
Reduce the adaptive charge sharing operation of power consumption.Specifically, Source drive 20 executes charge to the output of Current Datarow
It is shared, and the electric current to discharge from the load capacitor of display panel is provided to the place for needing electric current to charge, to reduce
Power consumption.
Sequence controller 10 can provide the data packet including the first option information or the second option information in control data
PKT, to reduce the power consumption of Source drive 20.For this operation, sequence controller 10 can be configured to as shown in Figure 3.
It can be operated by the adaptive charge Compliance control of Fig. 4 to determine and provide the second option information, and the low of Figure 10 can be passed through
Power mode control operates to determine and provide the first option information.The adaptive charge Compliance control operation of Fig. 4 is with Figure 10's
Low-power mode control operation may include in following step S10: execution pattern identification, and be provided based on pattern-recognition
Data packet PKT comprising controlling data, the control data have the first option information or the second option information.
With reference to Fig. 3, sequence controller 10 includes data receipt unit 11, data packet forms unit 12, data packet exports list
Member 13 and option information form unit 15.
The display data transmissions being received externally to data packet are formed unit 12 by data receipt unit 11.Data packet shape
Data packet is supplied to using the display data for being used to form data packet PKT, control data and clock as parallel data at unit 12
Output unit 13.Packet output unit 13 converts parallel data into serial data according to predetermined protocol, and by serial number
Source drive 20 is transmitted to according to as data packet PKT.
In above-mentioned configuration, data packet, which forms unit 12 and forms unit 15 from option information, receives the first option information or the
Two option informations, and include in control data by the first information or the second information.
Option information formed unit 15 previous row data are compared with Current Datarow, and provide as compare tie
The first option information or the second option information of fruit.For this operation, option information forms unit 15 and stores including pixel value
Unit 16, operating unit 17 and option information provide unit 18.
Pixel value storage unit 16 may include for behavior base come store display data memory, display data from
Data receipt unit 11 is transmitted to data packet and forms unit 12.Pixel value storage unit 16 can have at least storage previous row data
The ability for providing the data simultaneously with Current Datarow to be mapped.Controling and operating for unit 18 is provided with option information
It is synchronous, the executable following operation of pixel value storage unit 16: display data are stored with behavior base, and previous row data are provided
With Current Datarow to be mapped.
The executable following operation of operating unit 17: previous row data and current line number are received from pixel value storage unit 16
According to, and previous row data and Current Datarow are mapped, to calculate the data variation between previous row data and Current Datarow；
Display pattern is judged by reference to data variation；It is shared by the charge of Current Datarow to calculate power gain and power damage
Consume Pw；Power gain is compared with power loss Pw；And when charge sharing application is in Current Datarow or work as charge
When sharing applied to Current Datarow, the maximum of detection Source drive output changes Lpeak_cs or Lpeak_ncs.Operation
The executable operation selected from operation according to display pattern of unit 17, and operating result is supplied to option information, list is provided
Member 18.
Option information provides 18 controllable operation unit 17 of unit and selects operation to be performed according to display pattern, receives
Operating result is to determine option information corresponding with display pattern, and the option information of decision is supplied to data packet and is formed
Unit 12.
That is, option information, which forms unit 15, can determine the second option obtained by the adaptive charge sharing operation of Fig. 4
Information or the first option information obtained by the control operation of the low-power mode of Figure 10, and by the first option information of decision
Or second option information be supplied to data packet formed unit 12.
When display pattern corresponds to dynamic mode, the adaptive charge sharing operation of Fig. 4 is executed.
Adaptive charge sharing operation can be simply summarized as follows.Adaptive charge sharing operation includes: to map and compare
Previous row data and Current Datarow；It is shared by the charge of Current Datarow to calculate power gain Ps and power loss Pw；
And by reference between power gain Ps and power loss Pw comparison result and charge is shared whether is applied to previous row
Data decide whether charge sharing application in Current Datarow.
That is, operating the second option information obtained by adaptive charge Compliance control can be regarded as indicating whether for charge to be total to
Enjoy the information applied to source signal corresponding with Current Datarow.
When display pattern corresponds to static schema, the low-power mode control operation of Figure 10 is executed.
Low-power mode control operation can be simply summarized as follows.Low-power mode control operation includes: to map and compare
Previous row data and Current Datarow；In charge sharing application in the case where Current Datarow, detection Source drive output
First maximum variation；And select the first maximum variation as the first option level.In addition, low-power mode control operation packet
It includes: mapping and compare previous row data and Current Datarow；In the case where charge is shared not applied to Current Datarow, inspection
Survey the second maximum variation of Source drive output；And select the second maximum variation as the second option level.
Then, whether it is applied to previous row data according to charge is shared, selects the first option level and the second option level
In one as the first option information for being applied to data packet.
Adaptive charge Compliance control operation will be described in detail with reference to Fig. 4.
Firstly, at step S30, sequence controller 10 is by previous row data N-1 row when display pattern is dynamic mode
It is stored in pixel value storage unit 16 with Current Datarow N row, it is shared using charge to decide whether, and in step
At S32, operating unit 17 maps to previous row data N-1 row and Current Datarow N row each other.
Display panel 30 includes the pixel configured in different forms according to type of pixel.Fig. 5 is shown to be matched with normal type
The arrangement and Fig. 6 of the pixel for the display panel 30 set are shown with the cloth of the pixel of the display panel 30 of Z inversion type configuration
It sets.In fig. 5 and fig., Rx pixel indicates red pixel, and Bx pixel indicates that blue pixel, Gx pixel indicate green pixel, and
Du pixel indicates virtual pixel.
Sequence controller 10 can be by via with the arrangement pair of the red pixel of behavior base, blue pixel and green pixel
Display data are classified to form data packet PKT, and the data packet PKT is different according to the type of display panel 30.
Therefore, sequence controller 10 calls the information of the specification for verifying display panel 30 to compare previous row data N-
1 row and Current Datarow N row, and mapping is executed according to the specification of display panel 30, by previous row data N-1 row and currently
Row data N row reclassifies.
Then, sequence controller 10 compares previous row data and Current Datarow by operating unit 17, and in step
At S34, the shared caused power gain Ps and power loss Pw of charge by Current Datarow is calculated.Power gain Ps and power
Loss Pw can be calculated by the expression formula previously set in sequence controller 10.
The Source drive 20 of embodiment according to the present invention can be shared over the entire channel by unique charge of Fig. 7
It is shared to execute charge.Source drive 20 has multiple channels for exporting source signal Sout.The shared instruction of unique charge is entire
Channel is divided into the group of predetermined quantity, and is performed both by charge in each of these groups and shares.In Fig. 7, it to be used for charge
Shared channel can be switched over by multiple MOS transistors, and multiple MOS transistor can according to the intention of designer with
Various ways are implemented.Therefore, detailed description is omitted herein.
Fig. 7 shows six channel CH1 to CH6 and is grouped into unique texture.In this case, in six channel CH1
To CH6, it is shared to carry out charge to connect high output buffer VH, and can connect low output buffer VL to carry out electricity
Lotus is shared.In the unique texture, charge share voltage may be set to level corresponding with the average value of the channel connected.
With reference to Fig. 8 and Fig. 9, channel has the polarity that is changed based on midway drive voltage HVDD, and with
It is shared that charge is executed while behavior base drives.
High output buffer VH can drive output in the range of midway drive voltage HVDD and driving voltage VDD, with
And low output buffer VL can drive output in the range of ground voltage VSS and midway drive voltage HVDD.At this point, intermediate
Driving voltage HVDD may be configured as such voltage: have 1/2 of the range between driving voltage VDD and ground voltage VSS
Corresponding level.Charge share voltage V for high output buffer VHCS_VHMay be configured as midway drive voltage HVDD with
Level between driving voltage VDD, and the charge share voltage V for low output buffer VLCS_VLIt may be configured as in centre
Level between driving voltage HVDD and ground voltage VSS.
In response to the pixel data being changed with behavior base, the repeatable driving of channel and charge are shared.
When driving and charge, which are shared, to be repeated, according to the voltage change of channel, it can be achieved that power save and power consumption.
From the perspective of power consumption, the reduction of voltage level can indicate that display panel (that is, load capacitor) discharges.
In this case, it will be appreciated that at not consuming power.
However, sharing level V when voltage level rises to chargeCS_VHOr VCS_VLWhen, it can indicate to be executed altogether by discharge current
It enjoys.In this case, it can be achieved that power save.That is, power save can be used for calculating by the shared caused power gain of charge
Ps。
In addition, when voltage level shares level V from chargeCS_VHOr VCS_VLWhen rising, it can indicate to consume power.At this
In the case of kind, power consumption can be used for calculating by the shared caused power loss Pw of charge.
Sequence controller 10 controls operating unit 17 to for the previous of the entire channel by the shared connection of unique charge
Row data and Current Datarow are compared, and at step S34, calculate the shared caused function of charge by Current Datarow
Rate gain Ps and power loss Pw.
When calculating power gain Ps and power loss Pw, at step S36, the option information of sequence controller 10 is provided
Unit 18 checks that charge is shared and whether is applied to previous row data, and at step S38, by the operation of operating unit 17 come
Check whether power gain Ps is greater than power loss Pw.
For example, checking whether power gain Ps is greater than the step S38 of power loss Pw may include that determining power gain Ps is
Big preset offset level of no specific power loss Pw or more.
When charge is shared is applied to previous row data or power gain Ps less than power loss Pw, timing control
The option information of device 10 provides unit 18 and determines not by charge sharing application in Current Datarow, and at step S42, closes
Charge is shared.In this case, option information provides unit 18 and defines corresponding second option information, and by the of definition
Two option informations are supplied to data packet and form unit 12.Therefore, at step S44, data packet forms the formation of unit 12 and is applied with
The data packet PKT of second option information, wherein the second option information indicates that charge is shared and is not applied to Current Datarow.
On the other hand, when charge sharing application is greater than power loss Pw in previous row data or power gain Ps, when
The option information of sequence controller 10 provides unit 18 and determines charge sharing application in Current Datarow, and at step S40,
It is shared to open charge.In this case, option information provides unit 18 and defines corresponding second option information, and will definition
The second option information be supplied to data packet formed unit 12.Therefore, at step S44, data packet forms the formation of unit 12 and applies
The data packet PKT of the second option information is added, wherein the second option information indicates charge sharing application in Current Datarow.
When display pattern is dynamic mode, sequence controller 10 can pass through the adaptive charge Compliance control process of Fig. 4
Come generate about whether by charge sharing application in the second option information of source signal corresponding with Current Datarow, and will
Data packet PKT including the second option information is supplied to Source drive 20.
In response to indicating to apply the second shared option information of charge, Source drive 20 can execute source signal adaptive
Charge is shared, normal to export to reduce power consumption, or the second option information in response to indicating not share using charge
The shared source signal of adaptive charge is not carried out.
Low-power mode control operation will be described in detail with reference to Figure 10.
When display pattern is static schema, sequence controller 10 can be controlled for the electric current of the output of Source drive 20
Amount, to execute the low-power mode control operation for reducing power consumption as shown in Figure 10.
When display pattern is static schema, sequence controller 10 executes low-power mode control process, for current line
Data check the output variation of Source drive 20, and determine the first option information for being suitable for maximum variation.
With reference to Figure 11, the first option information can be indicated by PWRC, and change into " HHH ", " LHH " or " LLL ".
First option information can be configured to source can kept to drive magnitude of current control in response to the row data of static schema
In the range of the output of device 20.
As shown in Figure 12, the first option information may include in such range: the range meets needed for driving screen
Minimum levels and the time, and be configured based on row data, to reduce the magnitude of current.That is, may be in response to current line number
According to the first option information is determined, to reduce the magnitude of current in the range of keeping output voltage in response to previous row data.
For this configuration, before sequence controller 10 will be stored in pixel value storage unit 16 by operating unit 17
Data line is compared with Current Datarow.
Previous row data are compared by the operating unit 17 of sequence controller 10 with Current Datarow, and total in charge
The first maximum variation Lpeak_cs of the output that Source drive 20 is detected in the case where being applied to Current Datarow is enjoyed as absolute
Value.In addition, previous row data are compared by operating unit 17 with Current Datarow, and at step S74, it is shared in charge
In the case where not being applied to Current Datarow, the second maximum variation Lpeak_ncs conduct of the output of Source drive 20 is detected
Absolute value.At this point, the first maximum maximum variation Lpeak_ncs of variation Lpeak_cs and second can be stored as being total to by unique charge
Enjoy the maximum value in the value of the entire channel of connection.
The operating unit 17 of sequence controller 10 selects the first maximum maximum variation of variation Lpeak_cs and second respectively
Lpeak_ncs is as the first option level and the second option level, and at step S76, determine with the first option level and
The corresponding control option PWRCcs and PWRCncs of second option level.
Then, at step S78, the option information of sequence controller 10 provides whether the inspection charge of unit 18 is shared applies
In previous row data.
When charge sharing application is when previous row data, at step S80, the option information of sequence controller 10 provides single
Member 18 may be selected control option PWRCcs and be supplied to data as the first option information PWRC, and by the first option information PWRC
Packet forms unit 12, and at step S84, can form data packet PKT by applying the first option information PWRC.Another party
Face, when charge is shared is not applied to previous row data, at step S82, the option information of sequence controller 10 provides single
Member 18 may be selected control option PWRCncs and be supplied to number as the first option information PWRC, and by the first option information PWRC
Unit 12 is formed according to packet, and at step S84, data packet PKT can be formed by applying the first option information PWRC.
When display pattern is static schema, being controlled and operated by low-power mode, sequence controller 10 executes control, with
Power consumption is reduced by controlling the magnitude of current of the output for Source drive 20.
The low-power mode of the operation of adaptive charge Compliance control and Figure 10 that Fig. 3 is executed on the basis of data of being expert at controls
While operation, sequence controller 10 can reduce the power consumption of Source drive 20.
The considerations of sequence controller 10 can be for output buffer, gamma buffer and midway drive voltage buffer and hold
The above-mentioned low-power mode control process of row, generates for controlling output buffer, gamma buffer and midway drive voltage buffer
The independent option information of device, and option information is applied to data packet PKT.
Therefore, Source drive 20 may be in response to the corresponding control of option information item segment output buffer, gamma buffer
With midway drive voltage buffer, to reduce overall power consumption.
Through the above configuration and operation, sequence controller 10 can recognize display pattern, and by the display pattern with identification
Corresponding option information is transmitted to Source drive 20, to reduce the power consumption of Source drive 20.
In addition, sequence controller 10 can be to the output of Source drive 20 according to option information corresponding with display pattern
Charge Compliance control is executed, or to one or more in output buffer, gamma buffer and midway drive voltage buffer
A execution current control, to reduce power consumption.
Although various embodiments are hereinbefore described, it will be understood by those of skill in the art that these of description
Embodiment is only example.Therefore, disclosure described herein should not be limited based on described embodiment.
Claims (16)
1. for showing the low-power drive system of equipment, comprising:
Sequence controller is configured to that display pattern is divided into static state based on the difference between previous row data and Current Datarow
Mode and dynamic mode, and transmission data packet, the first option information corresponding with the static schema and with the dynamic
One in corresponding second option information of mode is applied in the data packet；And
Source drive is configured to receive the data packet, and is executed and the static schema according to first option information
Corresponding low-power mode, or adaptive charge corresponding with the dynamic mode is executed according to second option information
It is shared.
2. low-power drive system according to claim 1, wherein in response to the previous row data and the current line
Comparison result between data, the sequence controller is by being supplied to institute for second option information via the data packet
It is shared to control the adaptive charge of the Source drive to state Source drive, and second option information indicates whether to institute
It is shared to state Current Datarow application charge.
3. low-power drive system according to claim 2, wherein the sequence controller is according to the previous row data
The comparison result between the Current Datarow is calculated by the shared caused power of the charge on the Current Datarow
Gain and power loss, and by reference to charge it is shared whether be applied to the previous row data and the power gain with
The comparison result between the power loss, provide about whether to the Current Datarow application charge it is shared described in
Second option information.
4. low-power drive system according to claim 3, wherein
When charge is shared is applied to the previous row data or the power gain less than the power loss, when described
Sequence controller provides second option information shared for closing the charge on the Current Datarow, and
When charge sharing application is in the previous row data and the power gain is greater than the power loss, the timing control
Device processed is provided for opening shared second option information of the charge on the Current Datarow.
5. low-power drive system according to claim 3, wherein the sequence controller to for the source by driving
Dynamic device, entire channel via the shared connection of the unique charge previous row data and the Current Datarow are compared
Compared with calculating is by the shared caused power gain of the charge and the power loss on the Current Datarow.
6. low-power drive system according to claim 3, wherein it is total that the Source drive executes the adaptive charge
It enjoys, with according to second option information, the charge that source signal is selectively executed on the Current Datarow is shared.
7. low-power drive system according to claim 1, wherein in response to the previous row data and the current line
The comparison result between data, in charge sharing application in the case where the Current Datarow, the sequence controller
The first maximum variation of the Source drive output is calculated, and in the shared feelings for not being applied to the Current Datarow of charge
Under condition, the sequence controller calculates the second maximum variation of Source drive output, and provides and shared according to charge be
One in no the described first maximum variation selected applied to the previous row data and the second maximum variation as
First option information.
8. low-power drive system according to claim 7, wherein
When charge sharing application is when the previous row data, the sequence controller provides the described first maximum variation and is used as institute
The first option information is stated, and
When charge is shared is not applied to the previous row data, the sequence controller provides the described second maximum variation and makees
For first option information.
9. low-power drive system according to claim 7, wherein the sequence controller will be shared by unique charge
Maximum value in the value of the entire channel of connection is stored as the described first maximum variation and the second maximum variation.
10. low-power drive system according to claim 7, wherein based on provide as first option information,
One in described first maximum variation and the second maximum variation, the Source drive executes the low-power mode, with
Reduce the magnitude of current for maintaining the output of the Current Datarow.
11. low-power drive system according to claim 1, wherein the sequence controller provides first option
Information, first option information include for distinguishing output buffer, gamma buffer and midway drive voltage buffer
Information, and
The Source drive by first option information from the output buffer, the gamma buffer and it is described in
Between execute the low-power mode on the buffer that selects in driving voltage buffer.
12. for showing the sequence controller of equipment, comprising:
Pixel value storage unit is configured to storage previous row data and Current Datarow, and provide the previous row data and
The Current Datarow is to be mapped；
Operating unit is configured to:
According to the comparison result between the previous row data and the Current Datarow, calculate by the Current Datarow
Power gain caused by charge is shared and power loss, or
In charge sharing application in the case where the Current Datarow, the first maximum variation of Source drive output is calculated, with
And
In the case where charge is shared not applied to the Current Datarow, calculate the Source drive output second is maximum
Variation；And
Option provides unit, is configured to:
When display pattern is dynamic mode, whether it is applied to the previous row data and the function by reference to charge is shared
Comparison result between rate gain and the power loss, provide about whether to the Current Datarow application charge share
Second option information, and
When the display pattern is static schema, provides and whether be applied to the previous row data according to charge is shared and select
The described first maximum variation and the second maximum variation in one be used as the first option information.
13. sequence controller according to claim 12, further includes:
Data packet forms unit, and configuration is shaped to including the data packet for showing data and controlling data,
Wherein, the data packet forms unit and first option information or second option information is applied to the control
Data, wherein first option information is applied to low-power mode, to reduce for maintaining described in the Current Datarow
The magnitude of current and second option information of Source drive output are shared applied to adaptive charge, are worked as with selection described
Charge in the data that move ahead is shared.
14. sequence controller according to claim 12, wherein the operating unit selectively executes:
First operation, calculates the data variation between the previous row data and the Current Datarow；
Second operation is calculated by the shared caused power gain of the charge on the Current Datarow and power loss；
Third operation, calculates the power gain and the power loss；And
4th operation detects the institute of the Source drive output in charge sharing application in the case where the Current Datarow
The first maximum variation is stated, and in the case where charge is shared not applied to the Current Datarow, detects the source driving
The maximum variation of described the second of device output,
Wherein, the operating unit successively executes first operation to the third in response to the dynamic mode and operates,
Or first operation and the 4th operation are successively executed in response to the static schema.
15. sequence controller according to claim 12, wherein when the display pattern is the dynamic mode,
Charge is shared to be applied to the previous row data or in the case that the power gain is less than the power loss, the choosing
Item provides unit and provides for closing shared second option information of the charge on the Current Datarow, Yi Ji
In the case that the previous row data and the power gain are greater than the power loss, the option mentions charge sharing application
It provides for unit for opening shared second option information of the charge on the Current Datarow.
16. sequence controller according to claim 12, wherein
When charge sharing application is when the previous row data, the option provides unit and provides the described first maximum variation conduct
First option information, and
When charge is shared is not applied to the previous row data, the option provides unit and provides the described second maximum variation
As second option information.
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| KR10-2017-0099241 | 2017-08-04 | ||
| KR20170099241 | 2017-08-04 | ||
| KR10-2018-0081415 | 2018-07-13 | ||
| KR1020180081415A KR102552010B1 (en) | 2017-08-04 | 2018-07-13 | Low power driving system and timing controller for display apparatus |
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| CN109389930A true CN109389930A (en) | 2019-02-26 |
| CN109389930B CN109389930B (en) | 2023-08-15 |
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| KR (1) | KR102552010B1 (en) |
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| KR20210071207A (en) | 2019-12-06 | 2021-06-16 | 주식회사 실리콘웍스 | Display device and operation method thereof |
| CN115223472A (en) * | 2021-04-21 | 2022-10-21 | 群创光电股份有限公司 | Electronic device with a detachable cover |
| CN115457915A (en) * | 2022-10-18 | 2022-12-09 | 硅谷数模(苏州)半导体股份有限公司 | Control method and control device of source driver and display system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582686A (en) * | 2009-06-05 | 2009-11-18 | 友达光电股份有限公司 | Power level shifter, liquid crystal display device and charge sharing method |
| CN102436789A (en) * | 2011-11-18 | 2012-05-02 | 友达光电股份有限公司 | Display panel and method of driving the same |
| CN102542980A (en) * | 2010-12-22 | 2012-07-04 | 乐金显示有限公司 | Timing controller and organic light emitting diode display device using the same |
| TW201306001A (en) * | 2011-07-19 | 2013-02-01 | Chunghwa Picture Tubes Ltd | Display device |
| US20130187897A1 (en) * | 2012-01-20 | 2013-07-25 | Hung-Ta LIU | Driving method and a display structure using the driving method |
| US20140320464A1 (en) * | 2013-04-29 | 2014-10-30 | Seong Young RYU | Charge sharing method for reducing power consumption and apparatuses performing the same |
| CN105513520A (en) * | 2014-10-13 | 2016-04-20 | 三星显示有限公司 | Method and system for driving display panel and display apparatus for performing method |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101362028B1 (en) * | 2006-12-11 | 2014-02-11 | 엘지디스플레이 주식회사 | Liquid crystal display device and method driving of the same |
| KR100870500B1 (en) * | 2007-01-15 | 2008-11-26 | 엘지디스플레이 주식회사 | Liquid Crystal Display and Driving Method thereof |
| KR20120002069A (en) * | 2010-06-30 | 2012-01-05 | 삼성모바일디스플레이주식회사 | Organic light emitting display device and driving method thereof |
| KR101739133B1 (en) * | 2010-11-30 | 2017-05-23 | 엘지디스플레이 주식회사 | Liquid Crystal Display Device |
| KR101897011B1 (en) * | 2010-11-30 | 2018-09-10 | 엘지디스플레이 주식회사 | Liquid crystal display appratus and method for driving the same |
| KR101888431B1 (en) * | 2011-11-15 | 2018-08-16 | 엘지디스플레이 주식회사 | Display device and method of driving the same |
| KR102072781B1 (en) * | 2012-09-24 | 2020-02-04 | 삼성디스플레이 주식회사 | Display driving method and integrated driving appratus thereon |
| KR102470761B1 (en) * | 2015-07-29 | 2022-11-24 | 삼성전자주식회사 | Buffer amplifier circuit for enhancing slew rate output signal thereof and decices having same |
-
2018
- 2018-07-13 KR KR1020180081415A patent/KR102552010B1/en active IP Right Grant
- 2018-07-25 TW TW107125779A patent/TWI790256B/en active
- 2018-08-03 CN CN201810874853.6A patent/CN109389930B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582686A (en) * | 2009-06-05 | 2009-11-18 | 友达光电股份有限公司 | Power level shifter, liquid crystal display device and charge sharing method |
| CN102542980A (en) * | 2010-12-22 | 2012-07-04 | 乐金显示有限公司 | Timing controller and organic light emitting diode display device using the same |
| TW201306001A (en) * | 2011-07-19 | 2013-02-01 | Chunghwa Picture Tubes Ltd | Display device |
| CN102436789A (en) * | 2011-11-18 | 2012-05-02 | 友达光电股份有限公司 | Display panel and method of driving the same |
| US20130187897A1 (en) * | 2012-01-20 | 2013-07-25 | Hung-Ta LIU | Driving method and a display structure using the driving method |
| US20140320464A1 (en) * | 2013-04-29 | 2014-10-30 | Seong Young RYU | Charge sharing method for reducing power consumption and apparatuses performing the same |
| CN105513520A (en) * | 2014-10-13 | 2016-04-20 | 三星显示有限公司 | Method and system for driving display panel and display apparatus for performing method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20190015095A (en) | 2019-02-13 |
| CN109389930B (en) | 2023-08-15 |
| TWI790256B (en) | 2023-01-21 |
| KR102552010B1 (en) | 2023-07-07 |
| TW201911286A (en) | 2019-03-16 |
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