CN109272927A - Display control unit and control method, display device - Google Patents
Display control unit and control method, display device Download PDFInfo
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- CN109272927A CN109272927A CN201811260379.4A CN201811260379A CN109272927A CN 109272927 A CN109272927 A CN 109272927A CN 201811260379 A CN201811260379 A CN 201811260379A CN 109272927 A CN109272927 A CN 109272927A
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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]
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Abstract
The disclosure is directed to a kind of display control unit and control method, display device, which includes: control unit, amplifying circuit and pixel circuit, and control unit is for exporting the first reference voltage signal and amplification control signal；Amplifying circuit amplifies the first reference voltage signal for receiving the first reference voltage signal and amplification control signal, and by amplification control signal, obtains the second reference voltage signal and exports；Pixel circuit is used to carry out initialization process to the pixel circuit for receiving the second reference voltage signal, second reference voltage signal.Due to improving the voltage of reference voltage signal by amplifying circuit, enables the second reference voltage signal quickly to carry out initialization clear screen to pixel circuit, reduce the clear screen time, avoid the occurrence of motion blur phenomenon.And the second reference voltage signal that different voltages value can be obtained by different amplification control signals, can reduce energy consumption while guaranteeing quick clear screen.
Description
Technical field
This disclosure relates to which field of display technology, fills in particular to a kind of display control unit and control method, display
It sets.
Background technique
With the development of OLED (Organic Light Emitting Diode, Organic Light Emitting Diode) display technology,
FHD (Full High Definition, full HD) resolution ratio has been unable to satisfy people to the need of display screen high-quality, high image quality
It asks.And QHD (Quarter High Definition, a quarter of overall height clear screen resolution ratio) and higher resolution OLED is aobvious
The appearance of display screen causes pixel circuit density increasing, and screen includes that pixel circuit is more, and terminal is aobvious to OLED
The requirement of the refreshing frequency of display screen is also higher and higher, therefore the clear screen time requirement of OLED display screen is shorter and shorter.
It is charged in the related technology by reference to voltage to OLED screen curtain, to achieve the purpose that initialize clear screen.But
Due to the shortening of the clear screen time of OLED display screen, the too short charging time leads to not thorough clear screen, and then leads to display screen
There is motion blur phenomenon, influences display effect.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
The disclosure is designed to provide a kind of display control unit and control method, display device, and then at least one
Determine to overcome in degree in the related technology reference voltage can not thorough clear screen, and then display screen is caused motion blur phenomenon occur, influences to show
The problem of showing effect.
According to one aspect of the disclosure, a kind of display control unit is provided, comprising:
Control unit, for exporting the first reference voltage signal and amplification control signal；
Amplifying circuit for receiving the first reference voltage signal and amplification control signal, and passes through amplification control signal pair
First reference voltage signal amplifies, and obtains the second reference voltage signal and exports；
Pixel circuit, for receiving the second reference voltage signal, second reference voltage signal is used for the pixel
Circuit carries out initialization process.
According to an embodiment of the disclosure, described control unit includes:
Storage device, for storing amplification control signal；
Controller, for obtaining the amplification control signal from the storage device according to timing and being sent to described put
Big circuit.
According to an embodiment of the disclosure, the storage device includes:
Register is provided with multiple amplifications control signals in the register, and the controller is according to timing acquisition
Amplification control signal exports the second reference voltage signal to control the amplifying circuit.
According to an embodiment of the disclosure, the amplifying circuit includes:
Operational amplifier, positive input input first reference voltage signal；
First resistor is connected to the reverse input end of the operational amplifier；
The first end of multiple second resistances, multiple second resistances is connected to the reversed input of the operational amplifier
End；
Selector, control terminal receive the amplification and control signal, the output end of output end and the operational amplifier
Connection, input terminal are connected with the second end of multiple second resistances respectively.
According to an embodiment of the disclosure, the amplifying circuit includes:
Operational amplifier, positive input input first reference voltage signal；
Second resistance, one end are connected to the reverse input end of the operational amplifier, and the other end is connected to the operation and puts
The output end of big device；
Selector, control terminal receive amplification control signal, output end and the operational amplifier it is reversed defeated
Enter end connection；
The first end of multiple first resistors, multiple first resistors is connected with the input terminal of selector respectively, Duo Gesuo
The second end for stating first resistor connects the first power supply signal.
According to an embodiment of the disclosure, the pixel circuit includes:
Light-emitting component；
Reference mode, the light-emitting component are connected to the reference mode, when initialization, second reference voltage signal
Load on the reference mode.
According to an embodiment of the disclosure, the pixel circuit further include:
Reference voltage switch unit believes second reference voltage for being connected in response to reference voltage control signal
Number it is transmitted to the reference mode.
According to an embodiment of the disclosure, the reference voltage switch unit includes:
The first transistor, control terminal receive the reference voltage control signal, and first end is connected to the amplifying circuit
Output end, second end are connected to the reference mode.
According to the second aspect of the disclosure, a kind of display control method is provided, comprising:
Control unit exports the first reference voltage signal and amplification control signal；
Amplifying circuit receives the first reference voltage signal and amplification control signal, and is joined by amplification control signal to first
It examines voltage signal to amplify, obtain the second reference voltage signal and exports；
Pixel circuit receive the second reference voltage signal, second reference voltage signal be used for the pixel circuit into
Row initialization process.
According to an embodiment of the disclosure, described control unit exports the first reference voltage signal and amplification control letter
Number, comprising:
Controller exports the first reference voltage signal；
Controller controls signal according to the amplification in timing acquisition memory, and is transferred to the amplifying circuit.
According to an embodiment of the disclosure, the display control unit includes that the controller is stored according to timing acquisition
After amplification control signal in device, comprising:
Selector control terminal receives the amplification and controls signal, and the selection control signal control selections device is wherein defeated all the way
Enter end to output end to be connected, the signal of operational amplifier reverse input end is passed by being connected to the second resistance of the road input terminal
Transport to the output end of operational amplifier.
According to an embodiment of the disclosure, the display control unit includes that the controller is stored according to timing acquisition
After amplification control signal in device, comprising:
Selector control terminal receives the amplification and controls signal, and the selection control signal control selections device is wherein defeated all the way
Enter end to output end to be connected, the first resistor for being connected to the road input terminal is connected to the reverse input end of operational amplifier.
According to the third aspect of the disclosure, a kind of display device, including display control unit provided by the disclosure are provided.
The disclosure provides a kind of display control unit, controls signal by the amplification that control unit exports and controls amplifying circuit
First reference voltage signal is amplified, the second reference voltage signal is obtained, by the second reference voltage signal to pixel electricity
Road carries out initialization process.Due to improving the voltage of reference voltage signal by amplifying circuit, so that the second reference voltage is believed
Number initialization clear screen quickly can be carried out to pixel circuit, reduce the clear screen time, avoid the occurrence of motion blur phenomenon, it is aobvious to improve screen
Show effect.And the second reference voltage signal that different voltages value can be obtained by different amplification control signals, is guaranteeing
Energy consumption can be reduced while quick clear screen.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
The disclosure can be limited.
Detailed description of the invention
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 is the schematic diagram that screen shows smear in the related technology.
Fig. 2 is a kind of schematic diagram for display control unit that disclosure exemplary embodiment provides.
Fig. 3 is a kind of schematic diagram for amplifying circuit that disclosure exemplary embodiment provides.
Fig. 4 is the schematic diagram for another amplifying circuit that disclosure exemplary embodiment provides.
Fig. 5 is a kind of flow chart for display control method that disclosure exemplary embodiment provides.
Fig. 6 is the display control unit and display control unit is initial in the related technology that disclosure exemplary embodiment provides
Reference voltage signal charging process comparison diagram when changing peaceful.
In figure:
100: control unit
200: amplifying circuit
210: operational amplifier
220: selector
300: pixel circuit
VDD: the first power supply signal
VSS: second source signal
SCE: control signal
Sctr: amplification control signal
Vint1: the first reference voltage signal
Vint2: the second reference voltage signal
Sn: reference voltage control signal
DT: driving transistor
T1: the first transistor
R1: first resistor
R2: second resistance
P: reference mode
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, many details are provided to provide and fully understand to embodiment of the disclosure.However,
It will be appreciated by persons skilled in the art that can be with technical solution of the disclosure without one in the specific detail or more
It is more, or can be using other methods, constituent element, material, device, step etc..In other cases, it is not shown in detail or describes
Known features, method, apparatus, realization, material or operation are to avoid fuzzy all aspects of this disclosure.
Term "one", " one ", "the", " described " to indicate there are one or more elements/component part/etc.；With
Language " comprising " and " having " is to indicate the open meaning being included and refer to element/composition portion in addition to listing
Also may be present except divide/waiting other element/component part/etc.；Term " first ", " second " etc. are only used as label, no
It is the quantity limitation to its object.
In the related technology, because each scan line length is not caused by OLED screen curtain shape is special or material, device inhomogeneity
, the situation that pixel circuit quantity is different or load is different, will lead to appearance when there is moving image in screen use process
Motion blur phenomenon, i.e. previous frame image retention.For example, as shown in Figure 1, previous frame screen-picture shows 123ABC, by reference to electricity
Pressure Vint carries out initialization clear screen, then when former frame screen-picture shows 456DEF, at this time due to initializing clear screen time mistake
Short or reference voltage value is too small to lead on screen that there are smears.
A kind of display control unit is provided firstly in this example embodiment, as shown in Fig. 2, the display control unit,
Including control unit 100, amplifying circuit 200 and pixel circuit 300:
Control unit 100 is for exporting the first reference voltage signal Vint1 and amplification control signal Sctr；
Amplifying circuit 200 and control unit 100 connect, for receiving the first reference voltage signal Vint1 and amplification control
Signal Sctr, and the first reference voltage signal Vint1 is amplified by amplification control signal Sctr, second is obtained with reference to electricity
Pressure signal Vint2 is simultaneously exported；
Pixel circuit 300 and amplifying circuit 200 connect, for receiving the second reference voltage signal Vint2, second ginseng
Voltage signal Vint2 is examined for carrying out initialization process to the pixel circuit 300.
Wherein, control unit 100 can export multiple amplification control signal Sctr, control signal by different amplifications
Sctr controls the amplification factor of amplifying circuit 200, and then controls the second reference voltage signal Vint2 that amplifying circuit 200 exports
Voltage.In practical applications, each scan line length as caused by OLED screen curtain shape is special or material, device inhomogeneity
Situation uneven, 300 quantity of pixel circuit is different or load is different, will lead to and move in OLED screen curtain use process
Occur motion blur phenomenon, i.e. previous frame image retention when picture.Control unit 100 can amplify control signal according to sequential export
Sctr, the timing can be according to OLED screen curtain shape is special or material, each scan line length, 300 quantity of pixel circuit and negative
Situations such as load, determines, is also possible to obtain by test, controls signal to obtain different amplifications in different scan phases, this
Open embodiment is not specifically limited in this embodiment.
After pixel circuit 300 receives the second reference voltage signal Vint2, pass through Vint2 pairs of the second reference voltage signal
It charges in corresponding capacitor, since the second reference voltage signal passes through the amplification of amplifying circuit, thrust increases when charging, fills
The electric time is short, solves motion blur phenomenon.
The disclosure provides a kind of display control unit, controls signal Sctr control by the amplification that control unit 100 exports
Amplifying circuit 200 amplifies the first reference voltage signal Vint1, obtains the second reference voltage signal Vint2, passes through second
Reference voltage signal Vint2 carries out initialization process to pixel circuit 300.Due to being improved by amplifying circuit 200 with reference to electricity
The voltage for pressing signal, enables the second reference voltage signal Vint2 quickly to carry out initialization clear screen to pixel circuit 300, subtracts
Few clear screen time, avoid the occurrence of motion blur phenomenon.And putting for amplifying circuit 200 is controlled by the amplification control signal Sctr of timing
Big multiple can obtain the second reference voltage signal Vint2 of different voltages value, can reduce while guaranteeing quick clear screen
Energy consumption.
Each section of the display control unit provided below disclosure embodiment is described in detail:
Control unit 100 may include storage device and controller, and storage device is for storing amplification control signal Sctr；
Controller from the storage device for obtaining the amplification control signal Sctr and being sent to the amplifying circuit 200.Its
In, storage device may include register, and multiple amplification control signal Sctr, the controller root are provided in the register
According to amplification control signal Sctr described in timing acquisition, the second reference voltage signal is exported to control the amplifying circuit 200
Vint2.It in the OLED screen curtain course of work, is usually scanned, can be exported in different scan phases different line by line
Amplification control signal Sctr, to control the amplification factor of amplifying circuit 200, so that amplifying circuit 200 exports preset voltage value
Second reference voltage signal Vint2.For example for one piece of special-shaped OLED screen curtain, four regions can be divided into through detection and carried out initially
Change, then control unit 100 can be according to the sequential export amplification control signal Sctr for scanning four regions, and control is in amplification electricity
Road 200 exports corresponding second reference voltage in four regions, carries out initialization clear screen.
In a kind of feasible embodiment that the embodiment of the present disclosure provides, as shown in figure 3, the amplifying circuit 200 can
To include: operational amplifier 210, first resistor R1, multiple second resistance R2With selector 220；
210 positive input of operational amplifier inputs the first reference voltage signal Vint1；First resistor R1It is connected to
The reverse input end of the operational amplifier 210；Multiple second resistance R2It is in parallel with the operational amplifier 210 respectively；
Selector 220, control terminal receive the amplification and control signal Sctr, the output of output end and the operational amplifier 210
End connection, input terminal respectively with multiple second resistance R2Connection, the amplification control signal Sctr are used for control selections
Input signal is exported certain of device 220 by output end all the way.
Wherein, selector 220 can be data selector, can select the input terminal of data selector according to actual needs
Number, each input terminal of data selector has been correspondingly connected with second resistance R2, second resistance R2One end number corresponding with its
It is connected according to the input terminal of selector, the other end is connected with the reverse input end of operational amplifier 210.
Exemplary, data selector is four circuit-switched data selectors, and each input terminal of data selector is connected with one second
Resistance R2, each second resistance R2Resistance value it is different, due to for its positive input voltage of the amplifying circuit 200 and output end
Voltage relationship it is as shown in formula 1:
Wherein, uoFor the second reference voltage signal, uiFor the first reference voltage signal, R1For first resistor,It is i-th
Second resistance.
For four road input data selectors, the amplification control signal Sctr in register can be two binary codes,
Control terminal can have two-way input, control wherein second resistance R all the way by amplification control signal Sctr2And data selector
Output end is connected.For example, amplification control signal Sctr and second resistance R2Corresponding relationship can be as shown in table 1:
Table 1
In the feasible embodiment of another kind that the embodiment of the present disclosure provides, as shown in figure 4, the amplifying circuit 200
It include: operational amplifier 210, second resistance R2, selector 220 and multiple first resistor R1；
210 positive input of operational amplifier inputs the first reference voltage signal Vint1；Second resistance R2One end connects
It is connected to the reverse input end of the operational amplifier 210, the other end is connected to the output end of the operational amplifier 210；Selection
Device 220, control terminal receive the amplification and control signal Sctr, the reversed input of output end and the operational amplifier 210
End connection；Multiple first resistor R1First end connected respectively with the input terminal of selector 220, multiple first resistors
R1Second end connect power supply signal.
Wherein, selector 220 can be data selector, can select the input terminal of data selector according to actual needs
Number, each input terminal of data selector has been correspondingly connected with first resistor R1, the first end of multiple first resistor R1
It is connected respectively with the input terminal of selector 220, the second end of multiple first resistor R1 connects power supply signal, and power supply signal can
To be ground signalling.
Exemplary, data selector is four circuit-switched data selectors, and each input terminal of data selector is connected with one first
Resistance R1, each first resistor R1Resistance value it is different, due to for its positive input voltage of the amplifying circuit 200 and output end
Voltage relationship it is as shown in formula 2:
Wherein, uoFor the second reference voltage signal, uiFor the first reference voltage signal, R2For second resistance,It is i-th
First resistor.
For four road input data selectors, the amplification control signal Sctr in register can be two binary codes,
Control terminal can have two-way input, control wherein first resistor R1 and data selector all the way by amplification control signal Sctr
Output end is connected.For example, the corresponding relationship of amplification control signal Sctr and first resistor R1 can be as shown in table 1:
Table 1
It should be noted that the structure of above-described two kinds of amplifying circuits 200 is only specific reality cited by the disclosure
Example is applied, the embodiment of the present disclosure is not limited thereto.Pass through amplification control signal Sctr control selections device 220 adjusting and operation amplifier
The resistance value for the resistance that device 210 connects, and then 200 structure of amplifying circuit of 200 amplification factor of amplifying circuit is controlled in the disclosure
Protection scope within.For example, reaching control amplification electricity by the resistance value that amplification control signal Sctr controls variable resistance
The circuit etc. of 200 amplification factor of road.
Dotted line indicates that reference voltage charging process curve in the related technology, solid line indicate that the embodiment of the present disclosure provides in Fig. 6
Display control unit output the second reference voltage signal charging process curve.Axis of abscissas is the charging time in figure, indulges and sits
Parameter is capacitor charging target voltage E.The relationship such as formula of charging time t and the second reference voltage Vint and target voltage E
(3) shown in:
Wherein, RC is constant, is also certain value for its capacitance object voltage of determining OLED E, therefore can obtain t in Vint
It is the monotonous descending function about Vint in section greater than E, the display control unit that the embodiment of the present disclosure provides is able to ascend
The voltage of Vint, namely be the reduction of charging time t, therefore it can be concluded that when the charging for the display control unit that the disclosure provides
Between it is short, that is to say can quickly to OLED screen curtain carry out clear screen, solve smear problem.In practical applications, adjusting can be passed through
The amplification factor of amplifying circuit, and then the value of the second reference voltage Vint is controlled, it reaches and reduces charging time, the mesh of quick clear screen
's.
As shown in Fig. 2, the pixel circuit 300 includes: light-emitting component and reference economize on electricity, light-emitting component is connected to the ginseng
Examine node P, when initialization, the second reference voltage signal Vint2 loads on the reference mode P.Pixel circuit 300 also wraps
Driving transistor DT is included, the first end of driving transistor DT is connected with the first power supply signal VDD, second end and light-emitting component first
End connection, the second end of light-emitting component are connected with second source signal VSS, and driving transistor DT control terminal receives control signal
It is connected after SCE, the first power supply signal VDD loads the first end in light-emitting component, so that light-emitting component shines.
Further, the pixel circuit 300 further include: reference voltage switch unit, for responding reference voltage control
Signal Sn and be connected, the second reference voltage signal Vint2 is transmitted to the reference mode P.Pass through the second reference voltage
Charge to the corresponding capacitor of light-emitting component, by amplifying circuit 200 adjust charging voltage, with reach capacitor fast charging from
And complete the purpose of initialization clear screen.
Wherein, the reference voltage switch unit may include: the first transistor T1, and control terminal receives described with reference to electricity
Voltage-controlled signal Sn processed, first end are connected to the output end of the amplifying circuit 200, and second end is connected to the reference mode P.
Transistor described in disclosure embodiment all has a control terminal, first end and second end.Specifically, each
It can be source electrode, second end can be drain electrode that the control terminal of transistor, which can be grid, first end,；Alternatively, each transistor
It can be drain electrode, second end can be source electrode that control terminal, which can be grid, first end,.In addition, each transistor can also be increasing
Strong type transistor or depletion mode transistor, this example embodiment are not especially limited this.
On this basis, all transistors can be N-type TFT, and the driving voltage of each transistor is high electricity
Ordinary telegram pressure；In the case, the first power supply signal VDD can be high level signal, and the second source signal VSS can be with
For low level signal, the first end of the light-emitting component is the anode of OLED, and the second end of the light-emitting component is the yin of OLED
Pole.
Alternatively, all transistors can be P-type TFT, the driving voltage of each transistor is low level electricity
Pressure；In the case, the first power supply signal VDD can be low level signal, and the second source signal VSS can be height
Level signal, the first end of the light-emitting component are the cathode of OLED, and the second end of the light-emitting component is the anode of OLED.
A kind of display control method is additionally provided in this example embodiment, as shown in figure 5, the display control method includes
Following steps:
Step S510, control unit export the first reference voltage signal and amplification control signal；
Step S520, amplifying circuit receives the first reference voltage signal and amplification control signal, and passes through amplification control letter
Number the first reference voltage signal is amplified, obtains the second reference voltage signal and export；
Step S530, pixel circuit receive the second reference voltage signal, and second reference voltage signal is used for described
Pixel circuit 300 carries out initialization process.
In step S510, control unit 100 can export the first reference voltage signal and amplification control signal Sctr.
Further, when control unit 100 includes controller and memory, step S510 may include:
Step S511, controller export the first reference voltage signal Vint1；
Step S512, controller control signal Sctr according to the amplification in timing acquisition memory, and are transferred to described put
Big circuit 200.
In step S512, in memory, memory can be register, described to post for amplification control signal Sctr storage
Multiple amplification control signal Sctr are provided in storage, the controller amplifies control signal Sctr according to timing acquisition,
The second reference voltage signal Vint2 is exported to control the amplifying circuit 200.In the OLED screen curtain course of work, usually by
Row is scanned, and can be exported different amplifications in different scan phases and be controlled signal Sctr, to control amplifying circuit 200
Amplification factor, so that amplifying circuit 200 exports the second reference voltage signal Vint2 of preset voltage value.For example, different for one piece
Shape OLED screen curtain can be divided into four regions through detection and be initialized, then control unit 100 can be according to scanning four areas
The sequential export amplification control signal Sctr in domain, control export four regions corresponding second with reference to electricity in amplifying circuit 200
Pressure, carries out initialization clear screen.
In step S520, amplifying circuit 200 can receive the first reference voltage signal Vint1 and amplification control signal
Sctr, and the first reference voltage signal Vint1 is amplified by amplification control signal Sctr, obtain the second reference voltage letter
Number Vint2 is simultaneously exported.
Signal Sctr control selections device 220 is controlled by amplification, selector 220 selects corresponding resistance to be connected, with control
The amplification factor of amplifying circuit 200, referring specifically to circuit diagram shown in Fig. 2, selector control terminal receives the amplification control letter
Number, wherein input terminal to output end is connected the selection control signal control selections device all the way, and operational amplifier is reversely inputted
The output end that the signal at end end is transmitted to operational amplifier by being connected to the second resistance of the road input terminal.
Referring specifically to circuit diagram shown in Fig. 3, selector control terminal receives the amplification and controls signal, the selection control
Wherein input terminal to output end is connected signal control selections device all the way, and the first resistor for being connected to the road input terminal is connected to fortune
Calculate the reverse input end of amplifier.
In step S530, pixel circuit 300 receives the second reference voltage signal Vint2, second reference voltage signal
Vint2 is used to carry out initialization process to the pixel circuit 300.
After pixel circuit 300 receives the second reference voltage signal Vint2, pass through Vint2 pairs of the second reference voltage signal
It charges in corresponding capacitor, since the second reference voltage signal Vint2 passes through the amplification of amplifying circuit, thrust increases when charging
Greatly, the charging time is short, avoids the occurrence of smear.
It should be noted that although describing each step of method in the disclosure in the accompanying drawings with particular order,
This does not require that or implies must execute these steps in this particular order, or have to carry out step shown in whole
Just it is able to achieve desired result.Additional or alternative, it is convenient to omit multiple steps are merged into a step and held by certain steps
Row, and/or a step is decomposed into execution of multiple steps etc..
A kind of display device is additionally provided in this example embodiment, including above-mentioned display control unit.The display
Device, which for example may include that mobile phone, tablet computer, television set, laptop, Digital Frame, navigator etc. are any, has display
The products or components of function.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the disclosure are by appended
Claim is pointed out.
Claims (13)
1. a kind of display control unit characterized by comprising
Control unit, for exporting the first reference voltage signal and amplification control signal；
Amplifying circuit, for receiving the first reference voltage signal and amplification control signal, and by amplification control signal to first
Reference voltage signal amplifies, and obtains the second reference voltage signal and exports；
Pixel circuit, for receiving the second reference voltage signal, second reference voltage signal is used for the pixel circuit
Carry out initialization process.
2. display control unit as described in claim 1, which is characterized in that described control unit includes:
Storage device, for storing amplification control signal；
Controller, for obtaining the amplification control signal from the storage device according to timing and being sent to the amplification electricity
Road.
3. display control unit as claimed in claim 2, which is characterized in that the storage device includes:
Register, multiple amplifications control signals are provided in the register, and the controller amplifies according to timing acquisition
Signal is controlled, exports the second reference voltage signal to control the amplifying circuit.
4. display control unit as described in claim 1, which is characterized in that the amplifying circuit includes:
Operational amplifier, positive input input first reference voltage signal；
First resistor is connected to the reverse input end of the operational amplifier；
The first end of multiple second resistances, multiple second resistances is connected to the reverse input end of the operational amplifier；
Selector, control terminal receive the amplification and control signal, and output end is connected with the output end of the operational amplifier,
Its input terminal is connected with the second end of multiple second resistances respectively.
5. display control unit as described in claim 1, which is characterized in that the amplifying circuit includes:
Operational amplifier, positive input input first reference voltage signal；
Second resistance, one end are connected to the reverse input end of the operational amplifier, and the other end is connected to the operational amplifier
Output end；
Selector, control terminal receive the amplification and control signal, the reverse input end of output end and the operational amplifier
Connection；
The first end of multiple first resistors, multiple first resistors is connected with the input terminal of selector respectively, and multiple described
The second end of one resistance connects the first power supply signal.
6. display control unit as described in claim 1, which is characterized in that the pixel circuit includes:
Light-emitting component；
Reference mode, the light-emitting component are connected to the reference mode, when initialization, the second reference voltage signal load
In the reference mode.
7. display control unit as claimed in claim 6, which is characterized in that the pixel circuit further include:
Reference voltage switch unit passes second reference voltage signal for being connected in response to reference voltage control signal
Transport to the reference mode.
8. display control unit as claimed in claim 7, which is characterized in that the reference voltage switch unit includes:
The first transistor, control terminal receive the reference voltage control signal, and first end is connected to the output of the amplifying circuit
End, second end are connected to the reference mode.
9. a kind of display control method, for any display control unit of claim 1-8 characterized by comprising
Control unit exports the first reference voltage signal and amplification control signal；
Amplifying circuit receives the first reference voltage signal and amplification control signal, and passes through amplification control signal to first with reference to electricity
Pressure signal amplifies, and obtains the second reference voltage signal and exports；
Pixel circuit receives the second reference voltage signal, and second reference voltage signal is used to carry out just the pixel circuit
Beginningization processing.
10. display control method as claimed in claim 9, which is characterized in that described control unit exports the first reference voltage
Signal and amplification control signal, comprising:
Controller exports the first reference voltage signal；
Controller controls signal according to the amplification in timing acquisition memory, and is transferred to the amplifying circuit.
11. display control method as claimed in claim 10 is used for display control unit as claimed in claim 4, feature
It is, the display control unit includes packet after the controller controls signal according to the amplification in timing acquisition memory
It includes:
Selector control terminal receives the amplification and controls signal, and the selection controls signal control selections device wherein input terminal all the way
It is connected to output end, the signal of operational amplifier reverse input end is transmitted to by being connected to the second resistance of the road input terminal
The output end of operational amplifier.
12. display control method as claimed in claim 10, for the display control unit described in claim 5, feature
It is, the display control unit includes packet after the controller controls signal according to the amplification in timing acquisition memory
It includes:
Selector control terminal receives the amplification and controls signal, and the selection controls signal control selections device wherein input terminal all the way
It is connected to output end, the first resistor for being connected to the road input terminal is connected to the reverse input end of operational amplifier.
13. a kind of display device, which is characterized in that including any display control unit of claim 1-8.
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| CN109272927B (en) | 2021-04-13 |
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