CN106373526A - Display device and power supply circuit thereof - Google Patents
Display device and power supply circuit thereof Download PDFInfo
- Publication number
- CN106373526A CN106373526A CN201610970560.9A CN201610970560A CN106373526A CN 106373526 A CN106373526 A CN 106373526A CN 201610970560 A CN201610970560 A CN 201610970560A CN 106373526 A CN106373526 A CN 106373526A
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- module
- oled display
- power supply
- supply voltage
- display device
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Classifications
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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]
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a display device and a power supply circuit thereof. The display device comprises an OLED display panel, a drive module and the power supply circuit. The drive module is used for generating a drive signal, providing the drive signal for the OLED display panel, generating a control signal, and providing the control signal for the power supply circuit. The power supply circuit comprises a power supply conversion module and a switch control module. The power supply conversion module is used for receiving input voltage to generate power supply voltage. The switch control module is used for receiving the control signal generated by the drive module, and controlling the power supply voltage output according to the control signal. The OLED display panel receives the drive signal generated by the drive module and the power supply voltage output by the power supply circuit, and carries out displaying. According to the display device and the power supply circuit thereof, the phenomenon of the closed power supply circuit in the prior art is solved; the control mode of the power supply voltage output is optimized; and the output stability of the power supply circuit is improved.
Description
Technical field
The present invention relates to display technology field, the power circuit of more particularly, to a kind of display device and this display device.
Background technology
One major advantage of oled (Organic Light Emitting Diode) display is exactly interior wide viewing angle and good color saturation
Degree, it far surpasses other Display Technique such as liquid crystal display in this respect.In addition, oled display or a kind of self-luminous
Technology, does not only need back lighting, but also is provided that faster response time is to support that multimedia should than liquid crystal display
With.But, because oled display lighting is unique, it is upper every that it can arrange screen by the depositor of display interior
The intensity level of one pixel, if obtain the display of an all light, will correctly arrange each pixel of depositor
Point is all opened, it will be appreciated, however, that now screen power consumption is maximum.Therefore, in order to ensure oled display effect it is important to necessary
There is good power supply quality, that is, be necessary to propose a kind of power technology to ensure the power supply of oled display.
During realization, inventor finds prior art at least there is problems in that power supply adds after needing first zero load again
Load, otherwise power supply occurs closing phenomenon.
Content of the invention
Present invention is primarily targeted at proposing the power circuit of a kind of display device and this display device it is intended to solve existing
There is the problem that power supply in technology occurs closing phenomenon.
For achieving the above object, embodiment of the present invention first aspect provides a kind of display device, and described display device includes
Oled display floater, drive module and power circuit；
Described drive module, for generating drive signal to described oled display floater, and generates control signal to described
Power circuit；
Described power circuit includes: power transfer module and switch control module；
Described power transfer module, for receives input voltage to produce supply voltage；Described switch control module, is used for
Receive the control signal that described drive module generates, and control the output of described supply voltage according to this control signal；
Described oled display floater receives the drive signal of described drive module generation and the electricity of described power circuit output
Source voltage simultaneously carries out showing work.
In conjunction with the embodiment of the present invention in a first aspect, the embodiment of the present invention first aspect the first implementation in,
Described drive module generates control signal to described power circuit after default frame signal.
In conjunction with the embodiment of the present invention in a first aspect, the embodiment of the present invention first aspect second implementation in,
Described power transfer module includes dc-dc transducer；Described supply voltage include drive oled display floater elvdd voltage or
Elvss voltage.
In conjunction with the embodiment of the present invention in a first aspect, the embodiment of the present invention first aspect the third implementation in,
Described switch control module is transistor；The first end of described transistor connects the supply voltage output of described power transfer module
End, the second end of described transistor connects described oled display floater, and the grid of described transistor connects described drive module.
4th kind of possible implementation of the first aspect of the embodiment of the present invention, in conjunction with the first aspect of the embodiment of the present invention
The third implementation, described transistor be thin film transistor (TFT) or field effect transistor.
Additionally, for achieving the above object, embodiment of the present invention second aspect provides a kind of power circuit, for driving oled
Display floater and output supply voltage, described power circuit includes: power transfer module and switch control module；
Described power transfer module, for receives input voltage to produce supply voltage；
Described switch control module, the control signal that the drive module for receiving oled display floater generates, and according to
This control signal controls the output of described supply voltage.
In conjunction with the second aspect of the embodiment of the present invention, in the first implementation of the second aspect of the embodiment of the present invention,
Described switch control module receives the control letter that the drive module of described oled display floater generates after default frame signal
Number.
In conjunction with the second aspect of the embodiment of the present invention, in the first implementation of the second aspect of the embodiment of the present invention,
Described power transfer module includes dc-dc transducer；Described supply voltage include drive oled display floater elvdd voltage or
Elvss voltage.
In conjunction with the second aspect of the embodiment of the present invention, in the first implementation of the second aspect of the embodiment of the present invention,
Described switch control module is transistor；The first end of described transistor connects the supply voltage output of described power transfer module
End, the second end of described transistor connects described oled display floater, and the grid of described transistor connects described drive module.
4th kind of possible implementation of the second aspect of the embodiment of the present invention, in conjunction with the second aspect of the embodiment of the present invention
The third implementation, described transistor be thin film transistor (TFT) or field effect transistor.
Display device provided in an embodiment of the present invention and the power circuit of this display device, drive module generates and controls letter
Number, switch control module controls the output of supply voltage according to this control signal；Solve power circuit in prior art to occur
The phenomenon closed；Optimize the control mode of supply voltage output, improve the stability of power circuit output.
Brief description
Fig. 1 is display device structure schematic diagram provided in an embodiment of the present invention；
Fig. 2 is another structural representation of display device provided in an embodiment of the present invention；
Fig. 3 is the time sequence status schematic diagram of the power circuit of prior art display device；
Fig. 4 is the time sequence status schematic diagram after the power circuit enforcement of embodiment of the present invention display device；
Fig. 5 is the oled display panel structure schematic diagram in display device provided in an embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further in conjunction with the embodiments referring to the drawings.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
The transistor adopting in all embodiments of the invention can be all thin film transistor (TFT) or field effect transistor or other characteristics
Identical device, is mainly switching transistor according to the transistor that effect embodiments of the invention in circuit are adopted.By
It is symmetrical in the source electrode of the switching transistor adopting here, drain electrode, so its source electrode, drain electrode can exchange.At this
In bright embodiment, for distinguishing transistor the two poles of the earth in addition to grid, wherein first end will be referred to as by source electrode, drain electrode is referred to as the second end.
By the form in accompanying drawing specify transistor intermediate ends be grid, input signal end be source electrode, output signal end be drain electrode.In addition
The switching transistor that the embodiment of the present invention is adopted includes p-type switching transistor and two kinds of N-shaped switching transistor, and wherein, p-type is opened
Close transistor to turn on when grid is for low level, end when grid is for high level, N-shaped switching transistor is electric for height in grid
Conducts, end when grid is for low level.
It should be noted that it should be noted that the printed words such as " first ", " second " in the application are used for the purpose of to work(
Can and the essentially identical identical entry of effect or similar item make a distinction, the printed words such as " first ", " second " be not to quantity and
Execution order is defined.
As shown in figure 1, first embodiment of the invention proposes a kind of display device, this display device includes oled display floater
10th, drive module 20 and power circuit 30；
Refer to Fig. 5, Fig. 5 is the oled display panel structure schematic diagram in display device provided in an embodiment of the present invention.
Oled display floater 10 can include for example many signal line of scan line s1-sn data line d1-dm, the first power line p1,
Second source line p2 and can connecting to above-mentioned circuit and multiple pixel p x with such as matrix arrangement.Scan line s1-
Sn can sequentially transfer multiple scanning signals, and a plurality of data lines d1-dm can transmit multiple data signals.Holding wire is permissible
Including a plurality of luminous signal line e1-en (not shown).Scan line s1-sn and a plurality of luminous signal line e1-en (not shown) are permissible
Extend in the row direction, and can be parallel to each other.Data wire d1-dm can extend along column direction, and can be parallel to each other.
Drive module 20, for generating drive signal to oled display floater 10, and generates control signal to described power supply
Circuit；
In the present embodiment, drive module 20 generates control signal to power circuit 30 after default frame signal.In advance
If frame signal can be configured by user, usually 2 frame signal.
Power circuit 30 includes: power transfer module 31 and switch control module 32；
Power transfer module 31, for receives input voltage to produce supply voltage；Switch control module 32, for receiving
The control signal that drive module 20 generates, and control the output of supply voltage according to this control signal；
In the present embodiment, power transfer module 31 may include dc-dc transducer；The supply voltage producing includes driving
The elvdd voltage of oled display floater or elvss voltage.
Refer to shown in Fig. 2, in the present embodiment, switch control module can be transistor, it is brilliant that transistor includes thin film
Body pipe or field effect transistor.The supply voltage outfan of the first end connection power transfer module 31 of transistor, the second of transistor
End connects oled display floater 10, and the grid of transistor connects drive module 20.
Oled display floater 10 receives the drive signal of drive module 20 generation and the supply voltage of power circuit 30 output
And carry out showing work.
Receive the drive signal of drive module 20 generation and the power supply of power circuit 30 output when oled display floater 10
After voltage, picture can be carried out and show.
The work process of display device is substantially: drive module and power circuit is initialized, now power circuit
It is in Light Condition, the switch control module of power circuit is off；Preparing for drive signal drives oled to show
Panel is operated, and drive module generates the switch control module to power circuit for the control signal, power supply electricity after 2 frame signals
The switch control module closure on road, controls supply voltage to export to oled display floater, oled display floater proceeds by display
Work.
Refer to Fig. 3, Fig. 3 is the time sequence status schematic diagram of the power circuit of prior art display device.Power circuit must
Corresponding supply voltage must be exported in the low level (the blank time shown in figure) of signal (source shown in figure)
Elvdd, otherwise power circuit the phenomenon (as shown in the shut down of in figure) of closing occurs.
Refer again to Fig. 4, the time sequence status after Fig. 4 is the power circuit enforcement of embodiment of the present invention display device are illustrated
Figure.After the power circuit of the display device of the present invention is implemented, by increased switch control module, when power circuit is initial
After change, on power circuit electricity and be in Light Condition, after signal 2 frame, drive module send a control signal to switch control
Molding block, power circuit is in band load state.
In addition, display device can be: Electronic Paper, mobile phone, panel computer, television set, display, notebook computer, number
Any product with display function such as code-phase frame, navigator or part.
It should be noted that switch control module 32 is integrated in power transfer module 31, equally can achieve the present invention.Open
The specific implementation that pass control module 32 is integrated in power transfer module 31 can be, by power transfer module 31 and switch control
Molding block 32 is integrated into a module, such as power supply chip, then arranges a controlling switch, can be received by this controlling switch
The control signal that drive module 20 generates, and control the output of supply voltage according to this control signal.
Display device provided in an embodiment of the present invention, drive module generates control signal, and switch control module is according to this control
The output of signal control power supply voltage processed；Solve the phenomenon that cutting out occurs in power circuit in prior art；Optimize power supply electricity
The control mode of pressure output, improves the stability of power circuit output.
Can be referring again to Fig. 1 and Fig. 2, a kind of power circuit that second embodiment of the invention proposes, for driving oled to show
Panel 10 and output supply voltage, power circuit 30 includes: power transfer module 31 and switch control module 32；
Power transfer module 31, for receives input voltage to produce supply voltage；
Switch control module 32, the control signal that the drive module 20 for receiving oled display floater generates, and according to
This control signal controls the output of supply voltage.
In the present embodiment, switch control module 32 receives the driving mould of oled display floater after default frame signal
The control signal that block 20 generates.Default frame signal can be configured by user, usually 2 frame signal.
In the present embodiment, power transfer module 31 includes dc-dc transducer；Supply voltage includes driving oled display surface
The elvdd voltage of plate or elvss voltage.
In the present embodiment, switch control module is transistor；The first end of transistor connects power transfer module 31
Supply voltage outfan, the second end of transistor connects oled display floater 10, and the grid of transistor connects described oled and shows
The drive module 20 of panel.
It should be noted that switch control module 32 can be integrated in power transfer module 31, equally can achieve the present invention.
The specific implementation that switch control module 32 is integrated in power transfer module 31 can be, by power transfer module 31 and switch
Control module 32 is integrated into a module, such as power supply chip, then arranges a controlling switch, can be connect by this controlling switch
Receive the control signal that drive module 20 generates, and control the output of supply voltage according to this control signal.
Power circuit provided in an embodiment of the present invention, drive module generates control signal, and switch control module is according to this control
The output of signal control power supply voltage processed；Solve the phenomenon that cutting out occurs in power circuit in prior art；Optimize power supply electricity
The control mode of pressure output, improves the stability of power circuit output.
It should be noted that herein, term " inclusion ", "comprising" or its any other variant are intended to non-row
The comprising of his property, so that including a series of process of key elements, method, article or device not only include those key elements, and
And also include other key elements of being not expressly set out, or also include intrinsic for this process, method, article or device institute
Key element.In the absence of more restrictions, the key element being limited by sentence "including a ..." is it is not excluded that including being somebody's turn to do
Also there is other identical element in the process of key element, method, article or device.
These are only the preferred embodiments of the present invention, not thereby limit the present invention the scope of the claims, every using this
Equivalent structure or equivalent flow conversion that bright description and accompanying drawing content are made, or directly or indirectly it is used in other related skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of display device is it is characterised in that described display device includes oled display floater, drive module and power supply electricity
Road；
Described drive module, for generating drive signal to described oled display floater, and generates control signal to described power supply
Circuit；
Described power circuit includes: power transfer module and switch control module；
Described power transfer module, for receives input voltage to produce supply voltage；Described switch control module, for receiving
The control signal that described drive module generates, and control the output of described supply voltage according to this control signal；
Described oled display floater receives the drive signal of described drive module generation and the power supply electricity of described power circuit output
Press and carry out to show work.
2. a kind of display device according to claim 1 it is characterised in that described drive module default frame signal it
Generate control signal afterwards to described power circuit.
3. a kind of display device according to claim 1 is it is characterised in that described power transfer module includes dc-dc turns
Parallel operation；Described supply voltage includes elvdd voltage or the elvss voltage driving oled display floater.
4. a kind of display device according to claim 1 is it is characterised in that described switch control module is transistor；Institute
The first end stating transistor connects the supply voltage outfan of described power transfer module, and the second end of described transistor connects institute
State oled display floater, the grid of described transistor connects described drive module.
5. a kind of display device according to claim 4 is it is characterised in that described transistor is thin film transistor (TFT) or field effect
Ying Guan.
6. a kind of power circuit, for driving oled display floater and output supply voltage is it is characterised in that described power circuit
Including: power transfer module and switch control module；
Described power transfer module, for receives input voltage to produce supply voltage；
Described switch control module, the control signal that the drive module for receiving oled display floater generates, and according to this control
Signal processed controls the output of described supply voltage.
7. a kind of power circuit according to claim 6 is it is characterised in that described switch control module is believed in default frame
Number receive the control signal that the drive module of described oled display floater generates afterwards.
8. a kind of power circuit according to claim 6 is it is characterised in that described power transfer module includes dc-dc turns
Parallel operation；Described supply voltage includes elvdd voltage or the elvss voltage driving oled display floater.
9. a kind of power circuit according to claim 6 is it is characterised in that described switch control module is transistor；Institute
The first end stating transistor connects the supply voltage outfan of described power transfer module, and the second end of described transistor connects institute
State oled display floater, the grid of described transistor connects the drive module of described oled display floater.
10. a kind of power circuit according to claim 9 is it is characterised in that described transistor is thin film transistor (TFT) or field
Effect pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970560.9A CN106373526B (en) | 2016-10-28 | 2016-10-28 | A kind of power circuit of display device and the display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610970560.9A CN106373526B (en) | 2016-10-28 | 2016-10-28 | A kind of power circuit of display device and the display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106373526A true CN106373526A (en) | 2017-02-01 |
| CN106373526B CN106373526B (en) | 2018-12-07 |
Family
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| CN109215559A (en) * | 2018-10-26 | 2019-01-15 | 合肥鑫晟光电科技有限公司 | Drive control circuit, drive control method and display device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106373526B (en) | 2018-12-07 |
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