CN109256093A - Organic light emitting display and data-signal voltage adjusting method - Google Patents
Organic light emitting display and data-signal voltage adjusting method Download PDFInfo
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- CN109256093A CN109256093A CN201811426487.4A CN201811426487A CN109256093A CN 109256093 A CN109256093 A CN 109256093A CN 201811426487 A CN201811426487 A CN 201811426487A CN 109256093 A CN109256093 A CN 109256093A
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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
- G09G3/3291—Details of drivers for data electrodes in which the data driver supplies a variable data voltage for setting the current through, or the voltage across, the light-emitting elements
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Abstract
The present invention provides a kind of organic light emitting display and data-signal voltage adjusting method, pixel to be measured mainly includes pixel circuit and luminescent device in organic light emitting display, pixel circuit be used in preset black picture display time interval, response data signal and control the luminescent device shine or do not shine；Data drive unit generates the data-signal for the initialization period before the black picture display time interval, and the voltage value of the data-signal is adjusted to making the non-luminous critical minimum of the luminescent device.The adjusting of voltage data signal when the present invention carries out showing black picture to organic light emitting display, so that organic light emitting display is when showing black picture all with critical minimum outputting data signals, black picture compared to existing high-voltage value is shown, present invention reduces power consumption, has saved electric energy.
Description
Technical field
The present invention relates to display technology more particularly to a kind of organic light emitting display and data-signal voltage adjusting methods.
Background technique
Organic light emitting display is a kind of display using organic light-emitting diode display image.According to how having driven
Organic light emitting display can be divided into passive-matrix organic light emitting display (PMOLED) and active-matrix by machine light emitting diode
Organic light emitting display (AMOLED).Active matrix organic light-emitting display includes being arranged between scan line and data line to intersect
Multiple pixels at place.Each pixel includes luminescent device and the pixel circuit for driving luminescent device.Pixel circuit usually wraps
Include switching transistor, driving transistor and storage, wherein usually used is N-type driving transistor.With active square
Application of the battle array organic light emitting display in all kinds of portable equipments, the power consumption for reducing active matrix organic light-emitting display seem ten
Divide important.
For active matrix organic light-emitting display when showing black picture, data line input high level is so that N-type driving is brilliant
Body pipe is ended, so that luminescent device does not shine.Existing active matrix organic light-emitting display passes through defeated to data line
Enter voltage setting high threshold voltage, so that all active matrix organic light-emitting displays can successfully show black picture.
But inventor has found in R&D process, existing active matrix organic light-emitting display is shown in black picture
Power consumption is higher under state.
Summary of the invention
The present invention provides a kind of organic light emitting display and data-signal voltage adjusting method, reduces organic light emitting display
Power consumption of the device under black picture display state has saved electric energy.
According to the first aspect of the invention, a kind of organic light emitting display is provided, comprising:
Pixel to be measured, the pixel to be measured include pixel circuit and luminescent device, and the pixel circuit is used for preset
Black picture display time interval, response data signal and control the luminescent device shine or do not shine；
Data drive unit generates the data-signal for the initialization period before the black picture display time interval,
And the voltage value of the data-signal is adjusted to making the non-luminous critical minimum of the luminescent device.
Optionally, in a kind of possible implementation of first aspect, further includes:
Detection unit, the electric signal of the anode for responding the luminescent device generate and indicate the anode without electric signal
First state signal, or with generating the second status signal for indicating that the anode has electric signal；
The data drive unit generates the number specifically for the initialization period before the black picture display time interval
It is believed that number, and the voltage value of the data-signal is adjusted to making the detection unit generate the critical of the first state signal
Minimum.
Optionally, in the alternatively possible implementation of first aspect, the detection unit includes voltage detection unit；
The test side of the voltage detection unit is connect with the anode of the luminescent device, and output end connects the data and drives
Moving cell, the voltage detection unit are used for: when the test side does not detect voltage signal, to the data-driven list
Member transmits the first state signal, alternatively, passing when the test side detects voltage signal to the data drive unit
Defeated second status signal.
Optionally, in another possible implementation of first aspect, the detection unit includes current detecting unit；
The test side of the current detecting unit is connect with the anode of the luminescent device, and output end connects the data and drives
Moving cell, the current detecting unit are used for: when the test side does not detect current signal, to the data-driven list
Member transmits the first state signal, alternatively, passing when the test side detects current signal to the data drive unit
Defeated second status signal.
Optionally, in another possible implementation of first aspect, the detection unit is specifically used for described black
In picture display time interval, the electric signal of the anode of the luminescent device is responded, generates indicate the anode without electric signal first
Status signal, or the second status signal for having electric signal with the instruction anode is generated.
Optionally, in another possible implementation of first aspect, further includes:
Gating transistor, in the black picture display time interval that the anode of the luminescent device and the detection is single
Member conducting connection, and disconnect the anode of the luminescent device and the detection unit in other periods.
Optionally, in another possible implementation of first aspect, further includes:
Timing control unit, for generating the timing letter for controlling the black picture display time interval and the initialization period
Number.
Optionally, in another possible implementation of first aspect, the pixel circuit to be measured further include:
Storage capacitance stores the electricity of the data-signal for the initialization period before the black picture display time interval
Energy；
Transistor is driven, for being connected between the luminescent device and pixel power supply；The driving crystal is effective
In in the black picture display time interval, responding the electric energy of the data-signal stored in the storage capacitance, described in control
Luminescent device shines or does not shine；Wherein, the driving transistor is N-type transistor.
According to the second aspect of the invention, a kind of voltage data signal method of adjustment of organic light emitting display is also provided,
For organic light emitting display described in any possible implementation of first aspect present invention and first aspect, the method packet
It includes:
Generate data-signal in the initialization period before preset black picture display time interval, and by the data-signal
Voltage value is adjusted to making the non-luminous critical minimum of the luminescent device.
Optionally, in a kind of possible implementation of second aspect, the voltage value by the data-signal is adjusted
To making the non-luminous critical minimum of the luminescent device, comprising:
Using preset black picture voltage value as the current voltage value of the data-signal, the black picture voltage value is to make
Voltage value of the luminescent device in the preset black non-luminous data-signal of picture display time interval；
The data-signal of current voltage value is inputted into the pixel to be measured in the black picture display time interval, and is judged
Whether the luminescent device shines,
If it is not, the current voltage value then to be reduced to the voltage value of preset increments, as new current voltage value, and return
The data-signal of current voltage value is inputted into the pixel to be measured in the black picture display time interval described in executing；
If so, the current voltage value is increased to the voltage value of the preset increments, the electricity as the data-signal
Pressure value.
It is optionally, described to judge whether the luminescent device shines in the alternatively possible implementation of second aspect,
It include: to judge whether to detect electric signal in the anode of the luminescent device, if so, determining that the luminescent device shines；If
It is no, it is determined that the luminescent device does not shine.
Optionally, in another possible implementation of second aspect, the electric signal includes voltage signal or electric current
Signal.
A kind of organic light emitting display provided by the invention and data-signal voltage adjusting method, in organic light emitting display
Pixel to be measured mainly includes pixel circuit and luminescent device, and pixel circuit is used in preset black picture display time interval, number of responses
It is believed that number and control the luminescent device shine or do not shine；Data drive unit, for before the black picture display time interval
Initialization period generate the data-signal, and the voltage value of the data-signal is adjusted to sending out the luminescent device not
The critical minimum of light.The adjusting of voltage data signal when the present invention carries out showing black picture to organic light emitting display, so that
Organic light emitting display is obtained when showing black picture all with critical minimum outputting data signals, compared to existing high-voltage value
Black picture show, present invention reduces power consumption, saved electric energy.
Detailed description of the invention
Fig. 1 is a kind of organic illuminated display structure schematic diagram in the prior art；
Fig. 2 is a kind of organic illuminated display structure schematic diagram provided in an embodiment of the present invention；
Fig. 3 is a kind of signal timing diagram schematic diagram provided in an embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of pixel to be measured provided in an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of another kind pixel to be measured provided in an embodiment of the present invention；
Fig. 6 is another organic illuminated display structure schematic diagram provided in an embodiment of the present invention；
Fig. 7 is another signal timing diagram schematic diagram provided in an embodiment of the present invention；
Fig. 8 is that a kind of voltage data signal method of adjustment process of organic light emitting display provided in an embodiment of the present invention is shown
It is intended to.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be appreciated that in various embodiments of the present invention, the size of the serial number of each process is not meant to execute sequence
It is successive, the execution of each process sequence should be determined by its function and internal logic, the implementation without coping with the embodiment of the present invention
Journey constitutes any restriction.
It should be appreciated that in the present invention, " comprising " and " having " and their any deformation, it is intended that covering is not arranged
His includes, for example, the process, method, system, product or equipment for containing a series of steps or units are not necessarily limited to clearly
Those of list step or unit, but may include be not clearly listed or for these process, methods, product or equipment
Intrinsic other step or units.
It should be appreciated that in the present invention, " multiple " refer to two or more."and/or" is only a kind of description pass
Join object incidence relation, indicate may exist three kinds of relationships, for example, and/or B, can indicate: individualism A is existed simultaneously
These three situations of A and B, individualism B.Character "/" typicallys represent the relationship that forward-backward correlation object is a kind of "or".It " include A, B
And C ", " include A, B, C " refer to that A, B, C three include, " including A, B or C " refers to comprising A, B, C thrin, " comprising A,
B and/or C " refers to comprising wantonly 1 in A, B, C three or 2 or 3 wantonly.
Depending on context, as used in this " ... when " can be construed to " if " or " when ... " or
" in response to determination " or " in response to detection ".
Technical solution of the present invention is described in detail with specifically embodiment below.These specific implementations below
Example can be combined with each other, and the same or similar concept or process may be repeated no more in some embodiments.
It is a kind of organic illuminated display structure schematic diagram in the prior art referring to Fig. 1.Existing organic light emitting display
Device mainly includes scan drive cell, data drive unit, timing control unit and multiple pixel P arranged in a matrix.This
Driving transistor in invention in pixel P is all N-type driving transistor.Scan drive cell is swept with scan line to each pixel P offer
Signal is retouched, data drive unit provides data-signal to each pixel P with data line, and each pixel P is arranged in scan line and data line
Between infall.Timing control unit controls signal to scan drive cell and data drive unit transmission time sequence, so that sweeping
Driving unit and data drive unit are retouched in response to the control of timing control signal and to each pixel transmission scanning signal sum number it is believed that
Number.Before one or more pixels need to show black picture, data drive unit is in initialization period with data line to needs
The data-signal of the pixel transmission high level of black picture is shown, so that needing to show that the luminescent device in the pixel of black picture exists
Black picture display time interval does not shine, and realizes the display of black picture.
However, difference of the different organic light emitting displays on manufacturing process, drive condition, so that different organic light emissions are aobvious
Show that device can reach the critical voltage difference for the data-signal that black picture is shown, existing organic light emitting display is used uniformly high level
Voltage data signal, usually required considerably beyond making the non-luminous critical voltage of pixel, in the case of causing black picture to show compared with
High power consumption, energy consumption are larger.
It referring to fig. 2, is a kind of organic illuminated display structure schematic diagram provided in an embodiment of the present invention.Knot shown in Fig. 1
On the basis of structure, the present embodiment is adjusted voltage data signal when showing black picture using pixel to be measured, and realizing reduces
Show the power consumption and energy consumption when black picture.It is to be understood that due to the manufacture work of all pixels in same organic light emitting display
Skill is identical, and drive condition is consistent, therefore all pixels show the data-signal of black picture most in entire organic light emitting display
Low voltage value is identical.Can an optional pixel as pixel to be measured, it is aobvious to the entire organic light emitting display all pixels of determination
The minimum voltage value of data-signal when showing black picture.Such as it is shown in Fig. 2, pixel to be measured can be the picture of the first row first row
Element is connected with scan line S1 and data line D1.The present embodiment is without being limited thereto, and pixel to be measured is also possible to other any pixels.
It mainly include pixel circuit and luminescent device in pixel to be measured in the present embodiment, pixel circuit is used for preset
Black picture display time interval, response data signal and control the luminescent device shine or do not shine.It is of the invention real referring to Fig. 3
A kind of signal timing diagram schematic diagram of example offer is provided.Black picture display time interval shown in Fig. 3, it can be understood as be data-signal
The period of control operation is realized to pixel to be measured.Low level scanning signal be sequentially supplied to scan line S1,
S2 ..., in Sn so that each pixel order enters the initialization period of a scan period.In a scan period
The timing example for the data-signal that scanning signal and black picture are shown is referring to Fig. 3.In initialization period shown in Fig. 3, low electricity
Flat scanning signal is supplied in the pixel circuit of pixel to be measured, so that data-signal is stored into pixel circuit, then
Luminescent device control by the data-signal and shines or do not shine in next black picture display time interval.Luminescent device can
To be not understood as Organic Light Emitting Diode (Organic Light-Emitting Diode, referred to as: OLED).
Data drive unit in the present embodiment generates institute for the initialization period before the black picture display time interval
It states data-signal, and the voltage value of the data-signal is adjusted to making the non-luminous critical minimum of the luminescent device.Example
Such as, data drive unit obtains the luminous situation of luminescent device in pixel to be measured by detection line F in Fig. 2, and adjusts data letter
Number voltage value, being in luminescent device will shine but when not luminous critical state, and the voltage for obtaining critical minimum is made
Voltage value when black picture is shown for data-signal.Specifically, in initialization period shown in Fig. 3, low level scanning letter
The high level data signal D input pixel circuit that number S generates data drive unit is stored, then when black picture is shown
Duan Zhong, the scanning signal S of high level make data-signal D and pixel circuit disconnecting electric signal transmission, and pixel circuit is utilized first
The electric energy of the data-signal of beginningization period storage carries out luminous or non-luminous control to luminescent device.It is aobvious if it is colour picture
Show the period, pixel circuit be carried out using the controlling electric energy luminescent device of the data-signal stored in initialization period it is luminous.And
In the black picture display time interval of the present embodiment, duration is identical as colour picture display time interval, but because the electric energy of storage is to use
In showing black picture, pixel circuit at this time utilizes the controlling electric energy luminescent device of the data-signal stored in initialization period
In non-luminous state.Data drive unit is in next scan period, the data-signal of adjustment initialization period generation
Voltage, then detect whether luminescent device does not shine still, until adjusting the voltage value of the data-signal to making the hair
The non-luminous critical minimum of optical device.
Wherein, the timing control of black picture interval and initialization period shown in Fig. 3 can be by timing control unit Lai real
Existing.For example, with reference to structure shown in Fig. 2, display can also include controlling the black picture display time interval and institute for generating
State the timing control unit of the clock signal of initialization period.Timing control unit is by scan drive cell, data-driven
Unit transmission time sequence signal realizes the synchronism output of data-signal and scanning signal as shown in Figure 3.
A kind of organic light emitting display provided in this embodiment and data-signal voltage adjusting method, organic light emitting display
In pixel to be measured mainly include pixel circuit and luminescent device, pixel circuit is used in preset black picture display time interval, response
Data-signal and control the luminescent device shine or do not shine；Data drive unit, in the black picture display time interval
Preceding initialization period generates the data-signal, and the voltage value of the data-signal is adjusted to making the luminescent device not
Luminous critical minimum.The adjusting of voltage data signal when the present embodiment carries out showing black picture to organic light emitting display,
So that organic light emitting display when showing black picture all with critical minimum outputting data signals, compared to existing high electricity
The black picture of pressure value shows that the present embodiment reduces power consumption, saved electric energy.
It referring to fig. 4, is a kind of structural schematic diagram of pixel to be measured provided in an embodiment of the present invention.In embodiment illustrated in fig. 2
Each pixel used in pixel circuit can be 2T1C pixel circuit, be also possible to 7T1C pixel circuit or other can
The pixel circuit for driving luminescent device, says the structure of display using 2T1C pixel circuit as example below with reference to Fig. 4
It is bright.
Embodiment illustrated in fig. 4 further comprises detection unit.Detection unit is used to respond the electricity of the anode of the luminescent device
Signal generates and indicates the first state signal of the anode without electric signal, or with generate that the instruction anode has electric signal the
Two-state signal.It is to be understood that detection unit is used to carry out electrical signal detection to the anode of luminescent device, and it will test result
Feed back to data drive unit.The data drive unit, when specifically for initialization before the black picture display time interval
Section generates the data-signal, and the voltage value of the data-signal is adjusted to making the detection unit generate first shape
The critical minimum of state signal.It is to be understood that data drive unit receives first state signal in present scanning cycle
When, the voltage value of data-signal is turned down once in lower scan cycle, until when receiving the second status signal, then will before
Critical minimum of the voltage value of the data-signal of scan cycle as finally determining data-signal, and finally determine
For showing the voltage value of the data-signal of black picture.
It is to be understood that the test phase before factory, using the structures such as detection unit, detection line F in the present embodiment into
Row shows the debugging of data voltage under black picture.After debugging can by stripping the structures such as detection unit, detection line F, or
Connection between the power supply or disconnection detection unit and luminescent device anode or data drive unit of person's disconnection detection unit,
Or the modes such as the status signal that transmission of processing detection unit does not come are set in data drive unit, cancel the work of detection unit
With and function, avoid detection unit from working normally in display, normal display during other circuits are had an impact.
The structure of detection unit can there are many, such as can be voltage detection unit or current detecting unit.
In the implementation that detection unit is voltage detection unit, the test side of the voltage detection unit and the hair
The anode of optical device connects, and output end connects the data drive unit.The voltage detection unit is used for: in the test side
When not detecting voltage signal, the first state signal is transmitted to the data drive unit, alternatively, in the test side
When detecting voltage signal, second status signal is transmitted to the data drive unit.
In the implementation that detection unit is current detecting unit, the test side of the current detecting unit and the hair
The anode of optical device connects, and output end connects the data drive unit.The current detecting unit is used for: in the test side
When not detecting current signal, the first state signal is transmitted to the data drive unit, alternatively, in the test side
When detecting current signal, second status signal is transmitted to the data drive unit.
In the above-described embodiments, the pixel circuit can be with further include: storage capacitance and driving transistor.Wherein, it stores
Capacitor stores the electric energy of the data-signal for the initialization period before the black picture display time interval.Transistor is driven,
For being connected between the luminescent device and pixel power supply；The driving transistor is used in black picture display
Duan Zhong responds the electric energy of the data-signal stored in the storage capacitance, controls the luminescent device and shines or do not shine.
Wherein, the driving transistor is N-type transistor.
The present embodiment carries out electrical signal detection by anode of the detection unit to luminescent device and feeds back to data-driven list
Member, data drive unit can be directly obtained the status signal for indicating whether luminescent device shines, and improve adjustment for showing
Show the accuracy of the voltage of the data-signal of black picture.
It is the structural schematic diagram of another kind pixel to be measured provided in an embodiment of the present invention referring to Fig. 5.It is this hair referring to Fig. 6
Another organic illuminated display structure schematic diagram that bright embodiment provides.The base of embodiment illustrated in fig. 5 embodiment shown in Fig. 4
Gating transistor T0 is increased on plinth.Referring to the timing control that 5 and Fig. 6, gating transistor T0 are exported by timing control unit is believed
Number T control is only connected in black picture display time interval, i.e. the detection unit sun that only detects luminescent device in black picture display time interval
Pole signal.
In the present embodiment, the detection unit is specifically used in the black picture display time interval, responds the photophore
The electric signal of the anode of part generates and indicates the first state signal of the anode without electric signal, or indicates the anode with generating
There is the second status signal of electric signal.Preferably, referring to Fig. 5, display can also include gating transistor.Gating transistor is used
In connection is connected with the detection unit in the anode of the luminescent device in the black picture display time interval, and at other
The anode of the luminescent device and the detection unit are disconnected in section.Gating transistor can be understood as field-effect tube
Or triode, be able to respond the control of clock signal in black picture display time interval by the anode of the luminescent device with it is described
Detection unit conducting connection.Such as shown in Fig. 5 and Fig. 6, timing control unit is also connect with pixel to be measured.It is this hair referring to Fig. 7
Another signal timing diagram schematic diagram that bright embodiment provides.Referring to Fig. 5 to Fig. 7, timing control unit is particular by timing
The control terminal of control line and gating transistor connects (such as grid of N-type field-effect tube), and has to gating transistor transmission
The timing control signal T of black picture display time interval, so that gating transistor is connected in black picture display time interval.
Detection unit in the present embodiment only carries out anode detection to the luminescent device in black picture display time interval, other when
Duan Jun is not detected, and reduces the issuable interference of other period signals, is further improved in black picture display time interval to hair
The detection accuracy of optical device.
It is a kind of voltage data signal method of adjustment of organic light emitting display provided in an embodiment of the present invention referring to Fig. 8
Flow diagram.The voltage data signal method of adjustment of organic light emitting display as shown in Figure 8 can be applied to above-mentioned various
The executing subject of organic light emitting display in embodiment, the method can be data drive unit.Data drive unit exists
Data-signal is generated in initialization period before preset black picture display time interval, and the voltage value of the data-signal is adjusted
To making the non-luminous critical minimum of the luminescent device.
Wherein, the voltage value of the data-signal is adjusted that the luminescent device is non-luminous to be faced to making by data drive unit
The process of boundary's minimum mainly may include step S101 as shown in Figure 8 to step S104, specific as follows:
S101, using preset black picture voltage value as the current voltage value of the data-signal, the black picture voltage
Value is to make the luminescent device in the voltage value of the preset black non-luminous data-signal of picture display time interval.
Preset black picture voltage value can be in the prior art to the preset high voltage of data-signal for showing black picture
Value.By guaranteeing that luminescent device is the adjusting in black picture in progress in the data-signal for using high-voltage value for the first time.
The data-signal of current voltage value is inputted the pixel to be measured in the black picture display time interval by S102,
And judge whether the luminescent device shines.If so, step S104 is transferred to, if it is not, being then transferred to step S103.
Wherein judge that the method whether luminescent device shines may is that the anode judged whether in the luminescent device
Electric signal is detected, if so, determining that the luminescent device shines；If not, it is determined that the luminescent device does not shine.Electric signal
It can be voltage signal or current signal.
S103, if it is not, the current voltage value is then reduced to the voltage value of preset increments, as new current voltage value,
And it returns and the data-signal of current voltage value is inputted into the pixel to be measured in the black picture display time interval described in execution.
S104, if so, the current voltage value to be increased to the voltage value of the preset increments, as the data-signal
Voltage value.
The present embodiment is believed the data by being adjusted in above-mentioned organic light emitting display to voltage data signal
Number voltage value adjust to the non-luminous critical minimum of the luminescent device is made, reduce the power consumption of display.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of organic light emitting display characterized by comprising
Pixel to be measured, the pixel to be measured include pixel circuit and luminescent device, and the pixel circuit is used in preset black picture
Face display time interval, response data signal and control the luminescent device shine or do not shine；
Data drive unit generates the data-signal for the initialization period before the black picture display time interval, and will
The voltage value of the data-signal is adjusted to making the non-luminous critical minimum of the luminescent device.
2. organic light emitting display according to claim 1, which is characterized in that further include:
Detection unit, the electric signal of the anode for responding the luminescent device generate indicate the anode without electric signal the
One status signal, or the second status signal for having electric signal with the instruction anode is generated；
The data drive unit generates the data specifically for the initialization period before the black picture display time interval and believes
Number, and the voltage value of the data-signal is adjusted to making the detection unit generate the critical minimum of the first state signal
Value.
3. organic light emitting display according to claim 2, which is characterized in that the detection unit includes voltage detecting list
Member；
The test side of the voltage detection unit is connect with the anode of the luminescent device, and output end connects the data-driven list
Member, the voltage detection unit are used for: when the test side does not detect voltage signal, being passed to the data drive unit
The defeated first state signal, alternatively, transmitting institute to the data drive unit when the test side detects voltage signal
State the second status signal.
4. organic light emitting display according to claim 2, which is characterized in that the detection unit includes current detecting list
Member；
The test side of the current detecting unit is connect with the anode of the luminescent device, and output end connects the data-driven list
Member, the current detecting unit are used for: when the test side does not detect current signal, being passed to the data drive unit
The defeated first state signal, alternatively, transmitting institute to the data drive unit when the test side detects current signal
State the second status signal.
5. according to any organic light emitting display of claim 2 to 4, which is characterized in that the detection unit is specific to use
In in the black picture display time interval, responding the electric signal of the anode of the luminescent device, generates and indicate the anode without electricity
The first state signal of signal, or the second status signal for having electric signal with the instruction anode is generated.
6. organic light emitting display according to claim 5, which is characterized in that further include:
Gating transistor, for leading the anode of the luminescent device and the detection unit in the black picture display time interval
Lead to and connect, and disconnects the anode of the luminescent device and the detection unit in other periods.
7. organic light emitting display according to any one of claims 1 to 4, which is characterized in that further include:
Timing control unit, for generating the clock signal for controlling black the picture display time interval and the initialization period.
8. organic light emitting display according to any one of claims 1 to 4, which is characterized in that the pixel circuit to be measured is also
Include:
Storage capacitance stores the electric energy of the data-signal for the initialization period before the black picture display time interval；
Transistor is driven, for being connected between the luminescent device and pixel power supply；The driving transistor is used for
In the black picture display time interval, the electric energy of the data-signal stored in the storage capacitance is responded, controls described shine
Device shines or does not shine；Wherein, the driving transistor is N-type transistor.
9. a kind of voltage data signal method of adjustment of organic light emitting display, which is characterized in that be used for claim 1 to 8 times
Organic light emitting display described in one, which comprises
Generate data-signal in the initialization period before preset black picture display time interval, and by the voltage of the data-signal
Value is adjusted to making the non-luminous critical minimum of the luminescent device.
10. according to the method described in claim 9, it is characterized in that, the voltage value by the data-signal is adjusted to making
The non-luminous critical minimum of luminescent device, comprising:
Using preset black picture voltage value as the current voltage value of the data-signal, the black picture voltage value be make it is described
Voltage value of the luminescent device in the preset black non-luminous data-signal of picture display time interval；
The data-signal of current voltage value is inputted into the pixel to be measured in the black picture display time interval, and described in judgement
Whether luminescent device shines,
If it is not, the current voltage value then to be reduced to the voltage value of preset increments, as new current voltage value, and execution is returned to
It is described that the data-signal of current voltage value is inputted into the pixel to be measured in the black picture display time interval；
If so, the current voltage value is increased to the voltage value of the preset increments, the voltage value as the data-signal.
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