CN105374318A - System and method for usage dynamic power control of display system - Google Patents
System and method for usage dynamic power control of display system Download PDFInfo
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- CN105374318A CN105374318A CN201510501490.8A CN201510501490A CN105374318A CN 105374318 A CN105374318 A CN 105374318A CN 201510501490 A CN201510501490 A CN 201510501490A CN 105374318 A CN105374318 A CN 105374318A
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- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3215—Monitoring of peripheral devices
- G06F1/3218—Monitoring of peripheral devices of display devices
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
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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
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
- G09G2300/0861—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes
- G09G2300/0866—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes by means of changes in the pixel supply voltage
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/045—Compensation of drifts in the characteristics of light emitting or modulating elements
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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
- G09G2320/00—Control of display operating conditions
- G09G2320/04—Maintaining the quality of display appearance
- G09G2320/043—Preventing or counteracting the effects of ageing
- G09G2320/048—Preventing or counteracting the effects of ageing using evaluation of the usage time
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0613—The adjustment depending on the type of the information to be displayed
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
-
- 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
-
- 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
- G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
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- 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
-
- 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
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
There are provided methods and systems for dynamically adjusting a voltage supply of a display. Systems are provided for receiving a digital data input that indicates an amount of luminance emitted from the display for determining, on the basis of the received digital data, a desired supply voltage of the display is supplied, and for setting an adjustable voltage supply according to the determined desired supply voltage. Furthermore, the methods disclosed herein and systems provide a dynamic separate control of supply voltages to different parts of the display are supplied. ; It systems and methods for operating a display in a sleep mode by turning off parts of the display are also provided, which would otherwise be shown dark, which saves energy, which is required for programming the partial regions with display information.
Description
Technical field
The present invention relates generally to emissive display, and especially, relates to the display of the dynamic regulated power supply of the brightness regulation supply voltage comprised based on display.
Background technology
At present, active matrix organic light-emitting device (" AMOLED ") display starts to be put into use.Compared with conventional liquid crystal, the advantage of this class display comprises lower power consumption, manufacturing flexible and refresh rate faster.Compared to conventional liquid crystal, because each pixel comprises the OLED of independent luminous different colours, so do not have back lighting in displayer.Because do not need backlight, so displayer is usually than backlit display more power saving.
OLED is luminous based on the electric current be provided through driving transistors.Typical driving transistors is thin film transistor (TFT) (TFT), and depends on the voltage of the gate terminal being applied to driving transistors through the current class of driving transistors.Some displays comprise the capacitor being positioned at each pixel, and these capacitors are charged according to programming information and subsequently the electric charge of storage are applied to driving transistors to control the current class of driving transistors.In any moment, the power consumed in each pixel is all relevant with the voltage being applied to pixel with the electric current flowing through pixel.
Summary of the invention
Some embodiments of the present invention provide a kind of system for driving display.Described system can comprise multiple first image element circuit, multiple first supply lines, variable voltage source and controller.Described multiple first image element circuit can with the arranged in form of array, and each first image element circuit in described multiple first image element circuit can comprise luminescent device and for the driving transistors of transport stream through the drive current of described luminescent device.Each first supply lines in described multiple first supply lines can be associated with one or more in described multiple first image element circuit.Described multiple first supply lines can provide drive current to associated with it one or more in described multiple first image element circuit.Described variable voltage source can be provided for providing supply voltage at least one in described multiple first supply lines.Based on the numerical data shown the amount of the brightness sent from described multiple first image element circuit, described controller can determine from described variable voltage source and the output level of at least one that will be applied in described multiple first supply lines.It is luminous according to described numerical data with at least one one or more first image element circuit be associated in described multiple first supply lines that described output level can be enough to enable in described multiple first image element circuit.
Some embodiments of the present invention provide a kind of method of operation display.Described method can comprise the input of reception numerical data; A supply voltage that will be applied in multiple supply voltages of multiple first pixel is determined based on described input; And regulate the voltage of one or more power voltage line.The described numerical data input received can show the amount of the brightness sent from described multiple first pixels in described display.Described one or more power voltage line can be associated with described multiple first pixel, and can be regulated described one or more power voltage line according in described multiple supply voltage by the described supply voltage determined.
Some embodiments of the present invention provide a kind of method of operation display.The idle mode in wireless that described method can be included in described display closes the power voltage supply line be associated with the Part I of described display, is set as by described Part I secretly setting determining simultaneously; And stop the programming of described Part I of described display.
According to reference below by the detailed description that the accompanying drawing of brief description carries out various embodiment of the present invention and/or each side, aforesaid and additional each side of the present invention and embodiment will be apparent to those skilled in the art.
Accompanying drawing explanation
By reading detailed description also reference accompanying drawing below, the present invention is aforesaid will be apparent with other advantage.
Figure 1A is the figure of the display system comprising variable voltage source.
Figure 1B shows the circuit diagram of the exemplary pixels circuit of the electric pressure putting on driving transistors and luminescent device.
Fig. 2 illustrates the display system of the variable voltage source of the supply lines of the multiple subdivisions comprised for regulating display respectively.
Fig. 3 A illustrates the process flow diagram of the illustrative methods of the operation display when reducing the power consumption of display.
Fig. 3 B illustrates the process flow diagram of another illustrative methods of operation display.
Fig. 4 illustrates the process flow diagram of the another illustrative methods of operation display.
Fig. 5 illustrates the screen capture example comprising the display of optional feature of email list.
Fig. 6 A is the screen capture example with the display menu can selecting feature.
Fig. 6 B is another screen capture example of the screen shown in Fig. 6 A, it illustrates extra highlighted area.
Fig. 7 illustrates the structure example that supply lines can carry out the electrode pattern of the array of display adjusted respectively.
Fig. 8 illustrates another structure example can carrying out the electrode pattern in the array of display adjusted at supply lines respectively.
Fig. 9 is in order to energy-conservation and use the schematic diagram of the display of segmentation Vdd.
Figure 10 is the block diagram of the standby mode of the display with show events content (activecontent).
Figure 11 has the block diagram of display apparatus module of multiple frame buffers in standby period support activities content.
Figure 12 be have for standby period support activities content frame buffer and the block diagram of display apparatus module of content generating module.
The present invention may have various amendment and alternative form, shows specific embodiment by the example in accompanying drawing and will be described them in detail in this article.But should be understood that, the present invention is not limited to disclosed particular form.The present invention can cover claim appended by the present invention all amendment in the spirit and scope of the present invention that limit, equivalent and substitute.
Embodiment
Figure 1A is the block diagram of the exemplary display system 100 comprising variable voltage source 140.Display system 100 comprises address driver 120, data driver 110 and controller 130.Controller 130 receives the numerical data showing the information shown system 100 shown.Data-signal 134 is sent to data driver 110 by controller 130, and scheduling signals 132 is sent to address driver 120, and control signal 136 is sent to variable voltage source 140, to drive the information indicated by array of display display.Display system 100 generally includes the array of display had with the array of the pixels such as the such as pixel 10 of row and column layout.Array of display can be included in (such as, passing through depositing operation) conducting element and/or semiconductor element that display base plate, base plate for packaging (such as, glass) or assembled substrate are formed.Each pixel can be programmed separately, thus luminous with the brightness value that can programme separately.Thus pel array comprises and is suitable for according to the digital displaying data inputing to controller 130 and dynamically shows the array of display (" display screen ") of information.This display screen can indication example as according to the video information of video data stream received by controller 130.
For the ease of diagram, the display system 100 in Figure 1A illustrates single pixel 10.Should be understood that, the display screen of the array comprising the similar pixels such as such as pixel 10 can be used to realize display system 100, and this display screen is not limited to the pixel of specific line number and columns.Such as, the array of display with the multiple lines and multiple rows pixel generally used in the display for mobile device, television indicator, computer monitor and HUD (headsupdisplay) etc. can be used to realize display system 100.
Pixel 10 is operated by the driving circuit (" image element circuit ") comprising driving transistors and luminescent device.Hereinafter, pixel 10 can refer to image element circuit.Luminescent device can be arbitrary Organic Light Emitting Diode, but enforcement of the present invention is applicable to have the image element circuit of other electroluminescent device comprising current drive-type luminescent device.Driving transistors in pixel 10 can be arbitrary n-type thin film transistor or p-type thin film transistor, but enforcement of the present invention is not limited to the image element circuit of the transistor with particular polarity or has the image element circuit of thin film transistor (TFT).
Pixel 10 is connected with selection line 122, first supply lines 142, second supply lines 144, data line 114 and monitoring cable 112.Select line 122 to be provided by address driver 120, and the programming operation such as making it possible to carry out pixel 10 by activator switch or transistor can be used to, can programme to pixel 10 to make data line 114.Programming information is transferred to pixel 10 from data driver 110 by data line 114.Such as, can utilize data line 114 that program voltage or program current are applied to pixel 10.Program voltage/electric current can be in such grade: described grade is enough to the capacitor charging in pixel 10 to make driving transistors operate with the electric current of transport stream through luminescent device, thus sends the light of the amount of the brightness with expectation.The program voltage (program current) supplied by data driver 110 by data line 114 is usually by the relation that represents with the formula and/or relevant to the numerical data that controller 130 receives by look-up table digital data value being mapped to program voltage/current class.
During the programming operation of pixel 10, program voltage/program current can be applied to pixel 10, to make the charge storage devices in the pixels 10 such as such as capacitor.After programming operation, pixel 10 can send the light of the amount of the brightness with expectation during light emission operation.Such as, can to the charge storage devices in pixel 10 during programming operation, to apply voltage to more than in the gate terminal of driving transistors and/or source terminal during light emission operation.By the electric charge (" voltage ") in capacitor being applied to grid and/or the source electrode of driving transistors, regulate the conductivity of driving transistors according to the I-E characteristic of driving transistors, and electric current flows through luminescent device according to the voltage stored in the capacitor and is transmitted.
Usually, in the pixel 10, be such electric current by the drive current flowing through luminescent device that driving transistors transmits during the light emission operation of pixel 10: this electric current is supplied by the first supply lines 142 and flowed out to the second supply lines 144.First supply lines 142 is connected with variable voltage source 140 with the second supply lines 144.First supply lines 142 can provide positive voltage (such as, the voltage of " Vdd " is collectively referred to as) in circuit design, second supply lines 144 can provide negative supply voltage (such as, being collectively referred to as the voltage of " Vss " in circuit design).In some embodiments of the invention, the one in supply lines 142,144 or another one are fixed in ground voltage or another reference voltage, and do not need to be connected to variable voltage source.
In some embodiments of the invention, variable voltage source 140 can according to carrying out the control signal 136 of self-controller 130 to the first supply lines 142, or the second supply lines 144, or regulate both them.Such as, the value of positive voltage Vdd and/or the value of negative supply voltage Vss is regulated by variable voltage source 140.Difference between the voltage on the voltage on the first supply lines 142 and the second supply lines 144 affects the quantity of power obtained by pixel 10 during the programming operation of pixel 10.Usually, during the glow phase of pixel 10, the power needed for pixel 10 is proportional with (Vdd – Vss) × Idrive, and Idrive is the drive current be transmitted through driving transistors and luminescent device foregoing here.Therefore, by reducing the difference between Vdd and Vss, the power driven needed for pixel 10 can be reduced.Can by regulating the voltage on the first supply lines 142 and/or the second supply lines 144 to control to be applied to the difference (" Δ V ") between Vdd and the Vss of pixel 10.
Figure 1B shows the circuit diagram of the exemplary pixels circuit of the electric pressure putting on transistor 152 and luminescent device 154.For the ease of diagram, the image element circuit in Figure 1B is set to illustrate only being connected in series between driving transistors 152 and luminescent device 154 between both supply lines 142 and supply lines 144.Usually, image element circuit 10 shown in Figure 1A can comprise n-type or p-type driving transistors, and be arranged to and be optionally connected to the extra transistor of data line 114 and/or the layout of capacitor, to be used for programming on pixel 10 according to voltage-programming information and/or current programmed information and on the one or more capacitors chargings in image element circuit with the conductivity affecting driving transistors.
In the exemplary arrangement shown in Figure 1B, driving transistors 152 is connected between High Voltage Power Supply line 142 (" Vdd line ") and luminescent device 154.Such as, driving transistors 152 can have drain electrode and source electrode, and the drain electrode of driving transistors 152 can be connected to High Voltage Power Supply line 142, and the source electrode of driving transistors 152 can be connected to luminescent device 154.Luminescent device 154 is connected between driving transistors 152 and low voltage power supply line 144 (" Vss line ").Such as, luminescent device 154 can have positive pole and negative pole, and the positive pole of luminescent device 154 can be connected to driving transistors 152, and the negative pole of luminescent device 154 can be connected to low voltage power supply line 144.The gate terminal of driving transistors 152 is connected with holding capacitor 156.Holding capacitor 156 is provided for applying voltage to the grid of driving transistors 152, affect the conductivity of driving transistors 152 with this, make to control to flow through luminescent device 154 via driving transistors 152 by the voltage on holding capacitor 156 and the electric current be transmitted.Holding capacitor 156 is illustrated as and is connected to ground voltage, but, alternately, holding capacitor 156 can be connected to one in the positive terminal of luminescent device 154, power voltage supply line 142,144 or another one, reference voltage and/or enough makes holding capacitor 156 be charged according to programming information and voltage be applied to driving transistors thus affect other burning voltage of the conductivity of driving transistors 152.
Figure 1B also comprises the figure showing the voltage putting on power voltage supply line 142,144 image element circuit between the two.Total voltage difference between the power voltage supply line 142 supplied by variable voltage source 140 and power voltage supply line 144 is by (Vdd
supply– Vss
supply=Δ V, or Δ V
tOTAL) provide, Vdd here
supplyand Vss
supplythe voltage exported from variable voltage source on supply lines 142,144.At image element circuit place, the voltage on power voltage supply line 142,144 usually reduces due to the resistive circuit loss between variable voltage source 140 and the image element circuit that is powered/increases.Therefore, the voltage on the Vdd line 142 at the place of image element circuit shown in Figure 1B is Vdd
supply– (VddIRDrop).Similarly, the voltage on the Vss circuit 144 at the place of image element circuit shown in Figure 1B is Vss
supply– (VssIRRise)." IRDrop " and " IRRise " refers to the voltage caused by resistive circuit loss, and " I " refers to the electric current on circuit here, and " R " refers to line resistance.The voltage putting on luminescent device (selectively, can be OLED) is shown as V
oLED.V
oLEDthe value electric current that usually depends on the characteristic of luminescent device 154, the aging history of luminescent device 154 and/or flow through luminescent device 154 and be transmitted.In some instances, V
oLEDvalue can along with increase drive current (such as, the brightness increased) and increase, and compensate it by measuring above-mentioned increase and/or predict, above-mentioned measurement and/or prediction are according to the measurement of supervisory system 115 or based on carrying out for the standardization look-up table aging deterioration (agingdegradation) of prediction being mapped to use history/log file of storing in storer 116.
The voltage putting on driving transistors 152 is illustrated as V
dS, V here
dS" Drain-Source " voltage putting on driving transistors 152 can be referred to.In certain embodiments, magnitude of voltage (such as, the dram-source voltage V of transistor is put on
dS) enough make driving transistors 152 remain on the saturation mode of operation, because the amount of the electric current be transmitted through transistor when saturated does not rely on the voltage putting on transistor substantially.Such as, V is worked as
dS>V
gSduring – Vth, driving transistors 152 can operate in saturation mode, here V
gSbe the voltage between the gate terminal of driving transistors 152 and source terminal, Vth is the threshold voltage of driving transistors 152.Therefore, driving transistors 152 is remained on the V needed for saturation mode
dSvalue depend on V
gSvalue and threshold voltage Vth.Due to the current weigher of driving transistors 152, the value of Vth may time to time change.Be similar to and regard to V
oLEDdiscussion, and/or can be stored in storer 116 and map to the measured value of the look-up table of use record/history and/or predicted value and in time the value of Vth compensated according to the measurement carried out based on such as supervisory system 115.At V
dSvalue be greater than when driving transistors 152 being set in value required in saturation mode, superpotential (that is, still puts on the V of driving transistors 152
dSplussage) usually used as thermal dissipation in the channel region of driving transistors 152.In some instances, heat production too much in channel region adversely can cause the deterioration of driving transistors 152, and therefore causes the aging of display system 100.
Therefore, in some instances, Vdd is selected
supplyand/or Vss
supplyvalue to provide voltage (such as, the voltage V being enough to be set in by driving transistors 152 in saturation mode putting on driving transistors 152
dS).At least in part according to VddIRDrop, VssIRRise, V
oLEDv is determined with the measured value of Vth and/or predicted value
dSdesirable value.Extraly or alternatively, because programming information affects V
gSvalue because the brightness of luminescent device 154 is usually relevant to the electric current flowing through driving transistors 152, and the electric current flowing through driving transistors 152 is subject to V at least in part
gSregulate, so determine V according to the programming information being used for image element circuit at least partly
dSdesirable value.Such as, can according to relations I
dS=β (V
gS– Vth)
2set the electric current (" I flowing through driving transistors
dS"), β is the variable of the I-E characteristic characterizing driving transistors 152 and can comprises the grid oxic horizon of driving transistors 152, aspect ratio and mobility etc. here.Therefore, V is determined according to the brightness exported from image element circuit at least partly
gSvalue, and therefore at least partly determine V according to the programming information being used for image element circuit
gSvalue.
In some embodiments of the invention, controller 130 analyzes the numerical data of the brightness value of indication display to determine the amount of the voltage on adjustment first supply lines 142 and/or the second supply lines 144, makes the pixel in array of display to have enough power to produce required brightness.In certain embodiments, controller 130 analysis be used for the numerical data of the pixel in display and/or measurement, store and/or deteriorated information (the such as V of prediction
oLEDwith the value etc. of Vth), and regulate the voltage on the first supply lines 142 and/or the second supply lines 144, the pixel in display is individually set in state of saturation.In some instances, controller 130 can analyze the numerical data of input to determine each pixel in display system 100 to be set in Δ V required in saturation mode
tOTALvalue, and subsequently can according to Δ V required in the display of each frame
tOTALmaximal value set the value of Vdd and/or Vss that variable voltage source 140 supplies.By setting Δ V according to the maximum desirable value of each frame instead of the maximum desirable value of all frames
tOTALvalue, the magnitude of voltage putting on each pixel can be not more than magnitude of voltage required on a frame-by-frame basis.In addition, because pixel is all set in state of saturation, the electric current flowing through pixel is unaffected, so brightness can not reduce usually.Because set according to the product of the voltage putting on each pixel with the electric current flowing through each pixel by the power of display panel, reduce voltage to also reduce power consumption (and the heat production reduced in driving transistors channel region).
Advantageously, controller 130 can be arranged for the best size of the difference (" Δ V ") calculated between Vdd and Vss, make, while the brightness value providing enough power to be specified by input data with generation to pixel, to reduce the power consumed by display system 100 as much as possible.When display system 100 display video, can in controller 130 dynamically (such as on a frame-by-frame basis) determine to be provided in the voltage on the first supply lines 142 and/or the second supply lines 144.Controller 130 selects the voltage of the expectation be provided on supply lines 142,144 to determine the maximum brightness value sent from display by analyzing input data.Controller 130 can also calculate the total accumulated current caused by all pixels in display, to determine the total load loading on variable voltage source 140 during particular frame.
Controller 130 selects by using formula and/or look-up table the expectation voltage provided via supply lines 142,144.By first calculating optimum voltage (such as, the optimal level of Δ V) to expect the selection of voltage.In some instances, variable voltage source 140 can be arranged for provides the output voltage being in a series of predetermined voltage class (such as, with the separated series of voltage of the resolution of the driver of variable voltage source 140).Controller 130 can choose at random Δ V by the one or both in supply lines 142,144 is adjusted to predetermined level
tOTALimmediate usable levels.In some instances, controller 130 selects the predetermined level of supply lines 142,144 to select the Δ V in the optimal value determined
tOTALsecondary mxm..Also by judging that based on digital input data the greatest hope brightness value of total load and/or the display obtained by display is higher or lower than trigger value group or in the scope specified by trigger value, completed the selection expecting voltage by controller 130.Trigger value group or the scope be specified between trigger value may correspond to the specific voltage in being provided by variable voltage source 140.
Within system 100, for providing the supply lines 142,144 of supply voltage to be connected with variable voltage source 140 to the pixel in display.Can arrange along the row of display (or row) each supply lines being connected to variable voltage source 140, make every bar supply lines provide supply voltage to the pixel in the colleague mutually (or row) of display.The pixel that every bar supply lines is shown in the adjacent lines of device (or row) can also be embodied as share.
In the realization of display system 100 comprising supervisory system 115, pixel 10 is also connected with monitoring cable 112.Pixel 10 is connected to supervisory system 115 by monitoring cable 112.Supervisory system 115 can be integrated with data driver 110, can be maybe the autonomous system be separated.Especially, supervisory system 115 optionally can be realized by the electric current of monitor data line 114 during the policer operation of pixel 10 and/or voltage.In addition, display system 100 can be realized when there is no supervisory system 115 or monitoring cable 112.The curtage that monitoring cable 112 makes supervisory system 115 measure to be associated with pixel 10 also thus extracts the information of the deterioration showing pixel 10.Such as, supervisory system 115 can extract via monitoring cable 112 electric current that flows through driving transistors (such as, driving transistors 152) in pixel 10 and thus based on the electric current measured and determine the threshold voltage of driving transistors or the drift of threshold voltage based on the voltage being applied to driving transistors during measuring.The operating voltage that supervisory system 115 can also extract luminescent device (such as, such as puts on the V of luminescent device 154
oLEDdeng luminescent device just in light emission operation time put on the pressure drop of luminescent device).Supervisory system 115 subsequently signal 134 can be conveyed to controller 130 and/or storer 116 can compensate the deteriorated information extracted to make display system 100 in the follow-up programming of pixel 10 and/or light emission operation.Such as, once be extracted deteriorated information, can suitably regulate the programming information being sent to pixel 10 via data line 114 during the follow-up programming of pixel 10 and/or light emission operation, pixel 10 be sent have the light of the amount of the expectation brightness had nothing to do with the deterioration of pixel 10.Merit attention especially, when use or not usage monitoring system 115 all can implement the present invention.
Fig. 2 illustrates the display system 200 comprising variable voltage source 240, and variable voltage source 240 is for regulating separately the supply lines (such as, supply lines 241,242) of multiple subdivisions (such as, subdivision 211 to 216) of display 210.Display system 200 also comprises for receiving numerical data 232 and for relying on control signal 234 to control the controller 230 of variable voltage source 240.Be similar to the display illustrated in conjunction with Figure 1A in some respects, display 210 generally includes pel array, and described pixel can be programmed separately, thus luminous with the brightness value that can programme separately according to the information indicated by numerical data 232.But with the difference of previously described display, display 210 is that display 210 comprises discontinuous multiple subdivision.Display 210 comprises the first subdivision 211, second subdivision 212, the 3rd subdivision 213, the 4th subdivision 214, the 5th subdivision 215 and the 6th subdivision 216.Subdivision 211 to 216 can be supplied with supply voltage different from each other.Such as, the first subdivision 211 is supplied with the first supply voltage Vdd via the first supply lines 241
1, the second subdivision 212 is supplied with second source voltage Vdd via the second supply lines 242
2, the 6th subdivision 216 is supplied with the 6th supply voltage Vdd via the 6th supply lines 243
6.Similarly, although do not illustrate respectively, remaining subdivision 213 to 215 is supplied with the supply voltage Vdd that can control respectively respectively via respective supply lines
3, Vdd
4and Vdd
5.Corresponding to each subdivision 211 to 216 supply lines (such as, supply lines 241,242 ... 243) be connected with variable voltage source 240 and the terminal (such as, for terminal 211a with 211b of the first subdivision 211) that is connected to respective subdivision respectively.Variable voltage source 240 is arranged for individually and provides different supply voltages simultaneously to each subdivision 211 to 216.
The first supply lines 241 in Fig. 2 and the second supply lines 242 are relevant to the supply lines 142 and 144 of the Pixel-level (pixel-level) shown in Figure 1A, but are different from the supply lines 142 and 144 of the Pixel-level (pixel-level) shown in Figure 1A.Especially, the first supply lines 241 and the second supply lines 242 are the conducting wires entirety of each several part of display 210 (that is, each subdivision) being connected to the supply voltage being suitable for part separately.Be similar to the supply lines 142 and 144 shown in Fig. 1, first circuit 241 and the second circuit 242 can be electrically connected to multiple single line (" power rail (powerrail) ") respectively, and multiple single line is connected with the single pixel in respective subdivision 211 to 216 subsequently.
The connection between the multiple single lines in the first supply lines 241 and the first subdivision 211 is symbolically illustrated by the first terminal 211a and the second terminal 211b.The first terminal 211a provides the abutment between multiple power rail of the pixel be connected in the first subdivision 211 or positive voltage supply lines.Second terminal 211b also provides the abutment between multiple power rails of the pixel be connected in the first subdivision 211, but provide from the side contrary with the side with the first terminal 211a of display 210.By the first supply lines 241 is connected to terminal 211a and 211b, the impact of the pixel in the change subsections 211 of the supply voltage putting on subdivision 211 advantageously can be reduced.Therefore, impact is in other systems less than in conjunction with the impact of VddIRDrop in display system 200 of Figure 1B discussion.But, display system 200 can be realized with the supply lines (such as, supply lines 241 and 242) being connected to each in respective subdivision 211 to 216 via single terminal instead of two connecting terminals.By the terminal similar with terminal 211a and 211b illustrated for the first subdivision 211, remaining subdivision 212 to 216 is connected to variable voltage source 240.Such as, by terminal 212a and 212b by second source voltage Vdd
2be sent to the power rail in the second subdivision 212, and can by terminal 216a and 216b by the 6th supply voltage Vdd
6be sent to the power rail in the 6th subdivision 216.
In the operation of display system 200, controller 230 be suitable for receiving numerical data 232 and based on numerical data 232 (and alternatively based on display measurement and/or the deteriorated information of prediction) determine to be provided to the appropriate voltage of each subdivision 211 to 216.Controller 230 transmits control signal subsequently to variable voltage source 240 and 234 supplies suitable voltage to indicate variable voltage source 240 to subdivision 211 to 216.Controller 230 can determine the suitable supply voltage of each subdivision in the mode similar with the explanation of the operation to controller 130 and variable voltage source 140 in conjunction with Figure 1A, and can comprise and calculate the maximum brightness value of each subdivision 211 to 216, total service load of each subdivision 211 to 216 and the use for the threshold values and/or scope of selecting suitable voltage.Extraly or alternatively, controller 230 can determine the pixel in each subdivision 211 to 216 to be set in electric pressure required in saturation mode.Compared with the display system 100 in Figure 1A, the controller 230 in Fig. 2 can be determined individually by the appropriate voltage of each subdivision be provided in multiple subdivision 211 to 216.In addition, dynamically can determine to be provided to the appropriate voltage of subdivision 211 to 216 to regulate the supply voltage of the subdivision being provided to display 210 in real time, and can determine to be provided to the appropriate voltage of subdivision 211 to 216 to regulate the supply voltage being used for each frame of vision signal.The frequency adjustment that realization of the present invention also makes it possible to the frame frequency being less than vision signal is provided to the supply voltage of each subdivision.Such as, display system 200 can make the supply voltage being provided to subdivision 211 be fixed in identical grade at the plural successive frame of video before again being regulated.
The subdivision 211 to 216 of display 210 also can be called as region or the part of display.In certain embodiments, subdivision 211 to 216 can be nonoverlapping subdivision.In the representative configuration shown in Fig. 2, subdivision 211 to 216 crosses over the width of display 210.But aspect of the present invention is applicable to the display that subdivision comprises the width being less than display.In addition, aspect of the present invention is applicable to the display at subdivision erratically or unevenly interval.Such as, the subdivision of display can be arranged such that each subdivision of display corresponds to the display area of each feature of display graphics user interface.The subdivision that can be separated according to the highlighted display of the input of user (" selection "), such as can handle to make user the menu be associated with this graphic user interface.By controlling the power of each subdivision (such as, position 211 to 216) in such display respectively, can according to being select each subdivision to make it brighten or to cancel selected to make it dimmedly change the voltage being supplied to each subdivision.Such as, as shown in composition graphs 5, for the display being suitable for showing on the mobile device of Email and graphical menu option etc., each subdivision of display can distinguish addressing, with regulate by (" by what select ") subdivision of the highlighted display of display the power that obtains.
In addition, although regulate positive voltage (such as, Vdd with reference to each subdivision of display 210
1and Vdd
2deng) illustrate Fig. 2, should be understood that, by regulating negative supply voltage (such as supply voltage Vss
1and Vss
2deng) or realize display system 200 by the positive voltage and negative supply voltage regulating each subdivision 211 to 216 of display 210.
Fig. 3 A illustrates the process flow diagram of the illustrative methods of the operation display when reducing the power consumption of display.For exemplary purposes, with reference to the process flow diagram of figure 2 key diagram 3A.Controller 230 receives numerical data 232 (310).What numerical data 232 represented is the image that will be shown on the display 210.The numerical data 232 (320) corresponding to multiple first pixel that controller 230 analysis receives.Multiple first pixel can be the pixel in such as subdivision 211, or can be the pixel in whole display 210.Controller 230 is selected to be applied to the supply voltage (330) of multiple first pixel based on analyzed numerical data subsequently.As previously mentioned, can based on the scope of the brightness value of the pixel in display, based on the maximal value of such brightness value and/or minimum value, based on driving transistors being set in voltage required in saturation mode and/or carrying out the selection of suitable supply voltage based on total expection accumulation load of the brightness value by being acquired to supply expectation, and the selection by using look-up table, threshold values and/or formula to perform above-mentioned suitable supply voltage.Control signal 234 is sent to variable voltage source 240 by controller 230 subsequently, makes the supply voltage (340) that variable voltage source 240 is selected to multiple first pixel supply.
Fig. 3 B illustrates the process flow diagram of another illustrative methods of operation display.Except performing except frame 320,330 and 340 multiple (n) subdivision of display 210, the process flow diagram in Fig. 3 B is similar to the process flow diagram in Fig. 3 A.Each subdivision comprises multiple pixel.Therefore, except analyzing the numerical data (320) corresponding to multiple first pixel that receives, controller 230 also analyzes receive with the basis numerical data that just additional multiple pixels are corresponding by the numbering of the subdivision in the display that operates.Such as, with reference to the display 210 in figure 2, to the numerical data that second outside the first subdivision 211 receives to the analysis of the 6th subdivision (212 to 216).For general display, by multiple n-th pixel, to the numerical data (320n) that each subdivision analysis of display receives.Similarly, by multiple n-th pixel, supply voltage is selected to be applied to each subdivision (330n) of display, and by multiple n-th pixel, each supply voltage of selection is provided to each subdivision (340n) in display.
Fig. 4 illustrates the process flow diagram of the another illustrative methods of operation display.Determine whether display runs (410) in idle mode.If display runs in idle mode, so identify and be set in idle mode secretly set fixed display part (" subdivision ") (420).Then the supply voltage (430) being identified part of display is closed.The supply voltage being identified part of closing display prevents electric current to be transmitted through to be identified the pixel in part.In addition, the programming operation (440) being identified part of display can be stopped.The programming operation be identified in part is stopped advantageously preventing display to obtain power in programming process.When not stopping programming operation, per image duration energy be usually consumed in: addressing is carried out to each row, and provides program voltage or program current so that the memory device in each pixel is charged to such level by data driver: by the conducting of prevention driving transistors so that make cannot be luminous.In addition, for the embodiment comprising supervisory system (supervisory system 115 such as shown in Figure 1A), the compensation during the monitoring and/or compensating operation of display and policer operation need to obtain extra power usually.Comprise in the realization of supervisory system at such, the idle mode in wireless of display advantageously stop to display be set as secretly set the fixed monitoring and the compensate function that are identified part.Once stopped the programming being identified part to display, monitoring and/or compensating operation, carry out inquiring about to verify display off and on and whether keep in idle mode (410).
That Fig. 5 illustrates the list of Email and comprise the screen capture example of the display of optional feature.In the screen capture example shown in Fig. 5, be the Email of " NowSmellThis " according to the second positive voltage Vdd2 operating theme hurdle.Such as, when " NowSmellThis " Email relative to other Email listed be highlighted show that user selects with this, can relative to other magnitude of voltage (such as, magnitude of voltage Vdd3, Vdd4, Vdd5 and Vdd6) regulate the voltage of Vdd2, relative to the Email at the highlighted top illustrated in list of other Email listed when making it possible to not waste energy in the channel region of the driving transistors in the image element circuit of the other parts of display.In addition, by supply voltage Vdd1 control head menu individually, when making other parts mildly (" dim the ground ") display when display, can bubble head menu (showing selection with this) brightly.
Screen capture in Fig. 5 illustrates the display system for mobile phone or other mobile device, and this display system is divided into multiple subdivisions with supply voltage adjustable respectively.In certain embodiments, subdivision is consistent with the region highlighted individually on the graphic user interface of (such as, highlighted and/or dimness), manipulates user interface (such as, the list of Email) to enable user.During the display of the list by the Email shown in the screen capture in Fig. 5, Vdd2 can be set in the grade higher than Vdd3 to Vdd6, to enable the display in the subdivision that represented by Vdd2 brighter than other subdivision of display and unnecessarily can not waste power in dull areas.
Fig. 6 A is the screen capture example with the display menu can selecting feature.Fig. 6 B is another screen capture example that the screen shown in Fig. 6 A illustrates extra highlight regions.In Fig. 6 A and Fig. 6 B, screen capture shows for another example of the graphic user interface of the mobile devices such as such as phone, PDA or similar devices.Graphic user interface shown in Fig. 6 A and Fig. 6 B presents the menu of available programs on equipment and feature, user's input that this equipment provides according to the user by equipment and being manipulated.The various menu items that display shows are indicated by pictorial symbols and are arranged embarks on journey, and these row are consistent with the subdivision that can regulate respectively of the display in Fig. 6 A and Fig. 6 B.Especially, the subdivision (" position ") indicated by Vdd3 is highlighted relative to the contiguous subdivision of display.Thus icon in the subdivision of highlighted display seems bright (" highlighted ") relative to the icon in soft contiguous subdivision (subdivision such as, indicated by Vdd2, Vdd4, Vdd5 and Vdd6).In the operation of the graphic user interface shown in Fig. 6 A and Fig. 6 B, selected subdivision is cancelled (such as by reducing to be provided to, the subdivision indicated by Vdd2, Vdd4, Vdd5 and Vdd6) supply voltage (such as, reduce Δ V) save energy.
In addition, the screenshot capture in comparison diagram 6A and Fig. 6 B, the screenshot capture in Fig. 6 B shows the title block be in the region indicated by Vdd1 of highlighted state.By contrast, title block is in soft/dimmed state in fig. 6.It should be noted that, the size of the title block in Fig. 6 A and Fig. 6 B is different from the size of other subdivision (subdivision etc. such as indicated by Vdd2) of display, and the size of the subdivision of the subregion of display is selected as the brightness region of variation corresponding to the user interface that display illustrates.Therefore, in some embodiments of the invention, the display panel with the regulated power supply region of subregion be designed to have from by over the display by the size of the size of user interface that operates and/or the corresponding different adjustable area of shape and/or shape.
In order to the highlighted display of title block can be made as shown in Figure 6B, the size of Vdd1 can be increased relative to the value of the Vdd1 in Fig. 6 A, and thereby increase the size of Δ V.In other words, in order to save energy when title block is not highlighted, the size of Vdd1 can be reduced relative to the value of the Vdd1 when title block is highlighted.Advantageously, in the operation of the display shown in Fig. 5 to Fig. 6 B, save energy makes equipment can run the longer time under given battery electric quantity.In addition, the amount reducing the energy being converted into heat energy in the channel region of the dull areas of display extends the life-span of display panel by the current weigher reducing the driving transistors in the pixel of display.
Fig. 7 illustrates the structure example of the electrode pattern of the array of display 710 that supply lines can adjust respectively.Array of display 710 comprises the multiple subdivisions be arranged in grid.Each subdivision is controlled respectively by the supply lines (such as, supply lines 701 and 702) being connected to variable voltage source.Array of display 710 shown in Fig. 7 has fixing positive voltage Vdd (not shown in FIG.), and negative supply voltage Vss (i, j) controlled respectively by many supply lines, above-mentioned many supply lines be according to one to one ratio be each subdivision setting.In some embodiments of the invention, the passive power supply matrix of display 710 can be considered to for the supply lines of the array in each Vss (i, j) region.That is to say, by control Vss (i, j) size, each subdivision in the grid that subdivision is formed dynamically can be supplied with the set point value of the Δ V being adapted to respective subdivision based on the brightness value desired by the respective subdivision such as represented by numerical data input.
Fig. 8 illustrates another structure example of the electrode pattern in the array of display 810 that supply lines can adjust respectively.Array of display 810 also comprises the multiple subdivisions be arranged in grid.In the structure of array of display 810, the row along the grid formed by multiple subdivision controls positive voltage Vdd (i) respectively, and the row along the grid formed by multiple subdivision control negative supply voltage Vdd (j) respectively.By via row terminal connector (such as, connector 802 and 804 etc.) regulate Vss (j) and via row terminal connector (such as, connector 812 and 814 etc.) regulate Vdd (i), the Δ V being applied to each subdivision in the grid of subdivision formation can adjust respectively.Row terminal connector and row terminal connector are connected to variable voltage source and are dynamically set as suitable voltage according to the system and method illustrated herein.In certain embodiments, first supply lines (such as, be set as the power rail of Vdd (i)) usually can be positioned at the side of display base plate and flatly extend, and the second supply lines (such as, be set as the power rail of Vss (j)) can be positioned on image element circuit and/or base plate for packaging and vertically to extend, the image element circuit in display panel 810 is placed between Vdd power rail and Vss power rail.
In certain embodiments, select the size of the subdivision of array of display and arrange the part according to graphic user interface highlighted display selectively to correspond to display.Such as, the size that can mark the feature selected shown in Fig. 6 A and Fig. 6 B is consistent with the subdivision that can adjust respectively of the display of display graphics user interface to make.
Utilize and be used for dynamically regulating the system being provided to the said method of the supply voltage of display can substantially reduce the power consumed by such display device relative to utilizing the legacy equipment of fixed power source pressure-wire.The energy of about 20% can be saved compared to legacy system.
Two or more computing systems or equipment can replace by arbitrary controller of illustrating herein.Therefore, it is possible to desirably realize such as redundancy and copy the principle and advantage of equal distribution process to increase robustness and the performance of the controller illustrated herein.
The operation of exemplary defining method and the process illustrated can be performed herein by machine readable instructions.In these examples, machine readable instructions comprises the algorithm performed by (a) processor, (b) controller and/or (c) one or more treatment facility that other is applicable to.Described algorithm can be embodied in and be stored in such as flash memory, CD-ROM, floppy disk, hard disk drive, in software in the entity medium such as digitized video (general) CD (DVD) or other memory device, but those of ordinary skill in the art it is easily understood that, alternately, whole algorithm and/or some algorithm can be performed by equipment instead of processor, and/or in firmware or specialized hardware, specific implementation is (such as in a well-known manner, it can by application-specific IC (ASIC), programmable logic device (PLD) (PLD), field programmable logic device (FPLD), field programmable gate array (FPGA) and discrete logic etc. realize).Such as, the arbitrary of base-line data defining method or all component is realized by software, hardware and/or firmware.And, manually can realize the machine readable instructions of some or all of representatives.
Although equipment enters holding state, display shows some essential informations.In some wearable devices (such as, intelligent watch or Sports band), display shows some contents always.In this case, main challenge is the power consumption relevant to display.This power consumption comprises the quiescent dissipation from the backlight in pixel or luminescent device, also comprises the dynamic power consumption relevant to refresh display.
In order to reduce described quiescent dissipation, the brightness of display can be reduced, or can only a part for display be opened and remainder be closed (or being in comparatively low-light level).Owing to only needing to programme to the sub-fraction of display, so this also contributes to dynamic power consumption.
Fig. 9 shows an example of the display using segmentation Vdd, wherein, only opens the 3rd segmentation during standby mode.Therefore, only need by the content delivery of the 3rd segmentation to display, and therefore dynamic power consumption and quiescent dissipation all will reduce by 80%.
For described dynamic power consumption, the refresh rate (frame frequency) of display can be reduced.But, if the content time to time change of display (such as, dial plate), need generate this content and transmit it to display.Therefore, as shown in Figure 10, a part for main system will be opened, and by the power consumption existed with transmit data from main system to display and be associated.
In order to eliminate in standby period and the extra power consumption transmitted data be associated between main system and display, some basic functions can be added into display driver to produce the recurrence change in content.In one example, this driver can have in advance (such as, before entering holding state, or between the starting period or during powering on) by the pre-filled multiple frame buffers of main system, and depend on different conditions, one of them frame buffer can be used to programme to display.Such as, timer can be used to carry out overturning (with reference to Figure 11) between frame buffer.In this case, subject matter is: for some application of such as dial plate etc., there is many different combinations, these combinations need sizable storer to store them as full framebuffer.
In another example, based on certain condition, described driver can have some full framebuffers and other part of frame buffer only stores the change being applied to a full framebuffer.Such as, the pointer position in dial plate can be stored as the change of dial plate in part of frame buffer, and dial plate itself is then stored in full framebuffer.Figure 12 shows the block diagram of the display with full framebuffer and part of frame buffer.Here, based on some condition, content generator module selects full framebuffer and part of frame buffer, and content generator module revises the image be stored in full framebuffer based on the information in part of frame buffer.In addition, multiple full framebuffer and part of frame buffer also can be used to generate new content.
In another one example, described driver can carry out such as by some basic calculating of track mobile object etc.In this case, for different conditions, move certain part of the image in full framebuffer based on track, or the object of mobile storage in part of frame buffer and by the object modification frame buffer newly calculated.
Although illustrated and described specific embodiment of the present invention and application, but should be understood that, the invention is not restricted to described accurate structure and composition herein, and when not departing from the spirit and scope of the present invention that the claim appended by the present invention limits, various amendment of the present invention, change and change are apparent from explanation above.
The cross reference of related application
This application claims the U.S. Patent application the 14/459th enjoying in and submit on August 14th, 2014, the right of priority of No. 979, here the full content of this priority application is incorporated to by reference herein.
Claims (12)
1. the method for an operation display, described display comprises Part I and Part II, described Part I comprises multiple first pixel, and described Part II comprises multiple second pixels being different from described multiple first pixel, said method comprising the steps of:
The numerical data of the amount of the brightness that the expression receiving input will send from described multiple first pixels described display, described numerical data also represents the amount of the brightness that will send from described multiple second pixel;
Based on the described numerical data received, determine that a supply voltage in multiple supply voltage is to be applied to described multiple first pixel;
According in described multiple supply voltage by the described supply voltage determined, regulate the voltage of one or more power voltage lines be associated with described multiple first pixel;
Based on the described numerical data received, determine that first in described multiple supply voltage expects that supply voltage is to be applied to described multiple first pixel, and determine that second in described multiple supply voltage expects that supply voltage is to be applied to described multiple second pixel; And
According to described second being expected supply voltage by what determine in described multiple supply voltage, regulate the voltage of one or more power voltage lines be associated with described multiple second pixel.
2. the method for claim 1, also comprises step:
In response to the adjustment to the one or more power voltage lines be associated with described multiple first pixel, send the light of the amount with the described brightness represented by described numerical data from described multiple first pixel; And
In response to the adjustment to the one or more power voltage lines be associated with described multiple second pixel, send the light of the amount with the described brightness represented by described numerical data from described multiple second pixel.
3. a method for operation display, said method comprising the steps of:
Close at the idle mode in wireless of described display the power voltage supply line be associated with the Part I of described display, described Part I is set to secretly set and determines simultaneously; And
Stop the programming of the described Part I of described display.
4. method as claimed in claim 3, also comprises step:
Determine whether described display is in described idle pulley with fixing interval; And
Be not in the judgement of described idle pulley in response to described display, the described Part I of shown display is programmed.
5. method as claimed in claim 3, also comprises step:
Be identified in described idle mode in wireless be set to described in secretly set the described Part I of fixed described display.
6., for a system for driving display, described system comprises:
With multiple image element circuit groups of the arranged in form of array, each described image element circuit comprises luminescent device and for the driving transistors of transport stream through the drive current of described luminescent device;
Many supply lines, the every root supply lines in described many supply lines is connected to image element circuit group described at least one;
Multiple voltage source, each voltage source in described multiple voltage source is connected at least one in described many supply lines;
Controller, described controller is used for determining when described display will be in standby mode, and when described display is in described standby mode, reduces or close the voltage being provided to the described image element circuit group that at least one is selected.
7. system as claimed in claim 6, wherein, during described standby mode, the numerical data of the amount representing the brightness that will send from described image element circuit is only provided to the described image element circuit group of selection by described controller.
8., for a system for driving display, described system comprises:
With multiple image element circuit groups of the arranged in form of array, each described image element circuit comprises luminescent device and for the driving transistors of transport stream through the drive current of described luminescent device;
Many supply lines, the every root supply lines in described many supply lines is connected to image element circuit group described at least one;
Controller, described controller is used for determining when described display will be in standby mode, and when described display is in described standby mode, reduce the speed that the described image element circuit group supply selected at least one represents the numerical data of the amount of the brightness sent by described image element circuit.
9., for a system for driving display, described system comprises:
With multiple image element circuits of the arranged in form of array, each described image element circuit comprises luminescent device and for the driving transistors of transport stream through the drive current of described luminescent device;
Controller, described controller is used for determining when described display will be in standby mode; And
Multiple frame buffer, described multiple frame buffer prestrain have for when described display is in described standby mode only to the described image element circuit view data of programming selected.
10. system as claimed in claim 9, wherein, described frame buffer comprises full framebuffer and part of frame buffer; When described display is in described standby mode, described full framebuffer stores the data being used for programming to image element circuit described in first group that selects; And when described display is in described standby mode, described part of frame buffer stores and is used for only to the data that the change of image element circuit described in second group that selects is programmed.
11. systems as claimed in claim 9, wherein, described frame buffer is sequentially accessed thus is changed the display of described display with predetermined sequence.
12. systems as claimed in claim 11, wherein, described frame buffer comprises the data of the display of the object that represent along desired trajectory movement.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/459,979 US9606607B2 (en) | 2011-05-17 | 2014-08-14 | Systems and methods for display systems with dynamic power control |
| US14/459,979 | 2014-08-14 |
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|---|---|
| CN105374318A true CN105374318A (en) | 2016-03-02 |
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| CN201510501490.8A Pending CN105374318A (en) | 2014-08-14 | 2015-08-14 | System and method for usage dynamic power control of display system |
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| DE (1) | DE102015215555A1 (en) |
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| CN103688302A (en) * | 2011-05-17 | 2014-03-26 | 伊格尼斯创新公司 | Systems and methods for display systems using dynamic power control |
| CN103856729A (en) * | 2012-12-04 | 2014-06-11 | 株式会社东芝 | Image processing device |
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- 2015-08-14 DE DE102015215555.2A patent/DE102015215555A1/en not_active Withdrawn
- 2015-08-14 CN CN201510501490.8A patent/CN105374318A/en active Pending
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| CN101149640A (en) * | 2006-10-31 | 2008-03-26 | 威盛电子股份有限公司 | Low-power-consumption computer operating system and method |
| CN103688302A (en) * | 2011-05-17 | 2014-03-26 | 伊格尼斯创新公司 | Systems and methods for display systems using dynamic power control |
| CN103856729A (en) * | 2012-12-04 | 2014-06-11 | 株式会社东芝 | Image processing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108091304B (en) * | 2016-11-21 | 2021-01-12 | 乐金显示有限公司 | Gate driver and display panel using the same |
| KR20180057101A (en) * | 2016-11-21 | 2018-05-30 | 엘지디스플레이 주식회사 | Gate driving circuit and display panel using the same |
| KR102734508B1 (en) | 2016-11-21 | 2024-11-25 | 엘지디스플레이 주식회사 | Gate driving circuit and display panel using the same |
| US10665172B2 (en) | 2016-11-21 | 2020-05-26 | Lg Display Co., Ltd. | Gate driver and display panel using the same |
| CN108091304A (en) * | 2016-11-21 | 2018-05-29 | 乐金显示有限公司 | Gate drivers and the display panel using the gate drivers |
| US10957249B2 (en) | 2016-12-20 | 2021-03-23 | Lg Display Co., Ltd. | Light emitting display device having normal and standby modes and driving method thereof |
| CN108206006B (en) * | 2016-12-20 | 2021-06-15 | 乐金显示有限公司 | Light-emitting display device and driving method thereof |
| CN108206006A (en) * | 2016-12-20 | 2018-06-26 | 乐金显示有限公司 | Luminous display unit and its driving method |
| CN111986599A (en) * | 2019-05-21 | 2020-11-24 | 三星显示有限公司 | display screen |
| CN111986599B (en) * | 2019-05-21 | 2024-05-14 | 三星显示有限公司 | Display apparatus |
| CN113053315A (en) * | 2019-12-27 | 2021-06-29 | 乐金显示有限公司 | Organic light emitting display device and driving method thereof |
| CN113053315B (en) * | 2019-12-27 | 2024-03-08 | 乐金显示有限公司 | Organic light emitting display device and driving method thereof |
| CN113658556A (en) * | 2021-08-18 | 2021-11-16 | 福州京东方光电科技有限公司 | A voltage control circuit, control method and display device |
Also Published As
| Publication number | Publication date |
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| DE102015215555A1 (en) | 2016-02-18 |
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