CN201532754U - Driving circuit with low power consumption for AMOLED panel - Google Patents
Driving circuit with low power consumption for AMOLED panel Download PDFInfo
- Publication number
- CN201532754U CN201532754U CN2009203152871U CN200920315287U CN201532754U CN 201532754 U CN201532754 U CN 201532754U CN 2009203152871 U CN2009203152871 U CN 2009203152871U CN 200920315287 U CN200920315287 U CN 200920315287U CN 201532754 U CN201532754 U CN 201532754U
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- CN
- China
- Prior art keywords
- power consumption
- amoled panel
- driving circuit
- low power
- oxide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model relates to the technical field of planar display, in particular to a driving circuit with low power consumption for an AMOLED panel. The utility model discloses the driving circuit with low power consumption for the AMOLED panel, so as to solve the problems of large power consumption and short service life due to heating of the traditional driving device. The key points of the technical scheme are as follows: the driving circuit with low power consumption for the AMOLED panel comprises an MOS tube, a capacitor and a controller; and a source of the MOS tube is connected with a voltage output end of a DC/DC conversion chip, a gate of the MOS tube is connected with the controller, a drain of the MOS tube is connected with a voltage input end of the AMOLED panel, and the drain of the MOS tube is grounded through the capacitor. The driving circuit has the benefits of having small power consumption, prolonging the service life of the AMOLED panel, and being applicable to the planar display.
Description
Technical field
The utility model relates to display technique field, plane, relates to AMOLED panel low power consumption driving circuit specifically.
Background technology
In order to drive AMOLED (active-matrix Organic Light Emitting Diode) panel, the driving voltage that needs has ELVDD and ELVSS (a following modulating voltage that all is called).These modulating voltages are to produce in that drive integrated circult is inner, and to each unit supply of panel, therefore need bigger electric current, and generalized case is that the outside is appended the voltage generation circuit of lighting a lamp separately and provided.The voltage generation circuit of lighting a lamp is to use the DC/DC conversion chip to finish, and it can be by regulating the size that duty is recently regulated output voltage, and the voltage of exporting from the DC/DC conversion chip uses as a modulating voltage.Adopt this mode, the power supply of each unit of panel can be met, but because the DC/DC conversion chip continue to be given the power supply of AMOLED panel, therefore causes power consumption big, and causes the heating of DC/DC conversion chip and reduction serviceable life.
The utility model content
Technical problem to be solved in the utility model is: a kind of low power consumption driving circuit of AMOLED panel is provided, and it is big to solve traditional drive unit power consumption, because of heating causes the problem that serviceable life is short.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: AMOLED panel low power consumption driving circuit comprises metal-oxide-semiconductor, electric capacity and controller; The source electrode of described metal-oxide-semiconductor connects the voltage output end of DC/DC conversion chip, and the grid of metal-oxide-semiconductor connects controller, and the drain electrode of metal-oxide-semiconductor connects the voltage input end of AMOLED panel, and capacity earth is passed through in the drain electrode of metal-oxide-semiconductor.
Described controller is a clock oscillator.
Described AMOLED panel low power consumption driving circuit is integrated on the AMOLED panel.
The beneficial effects of the utility model are: power consumption is little, prolong AMOLED panel serviceable life.
Description of drawings
Fig. 1 is an electrical block diagram of the present utility model.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
The utility model is big at the conventional ADS driving device power consumption of AMOLED panel, because of heating causes the problem that serviceable life is short, a kind of low power consumption driving circuit has been proposed, adopt the control of metal-oxide-semiconductor as the controlled device of switching device, output voltage to the DC/DC conversion chip carries out time-shared switch, and utilizes the continuous charge and discharge of electric capacity that the AMOLED panel is kept continued power, so just can reduce power consumption, thereby reduced thermal value, reached the effect in prolongation AMOLED panel serviceable life.
As shown in Figure 1, the AMOLED panel low power consumption driving circuit in the utility model comprises metal-oxide-semiconductor, electric capacity and controller; The source electrode of described metal-oxide-semiconductor connects the voltage output end of DC/DC conversion chip, and the grid of metal-oxide-semiconductor connects controller, and the drain electrode of metal-oxide-semiconductor connects the voltage input end of AMOLED panel, and capacity earth is passed through in the drain electrode of metal-oxide-semiconductor.Controller can adopt clock oscillator, also can adopt other controller such as PLC etc.
Its principle of work is: controller sends the grid of pulse signal input metal-oxide-semiconductor, the conducting of control metal-oxide-semiconductor or end, and the output voltage of DC/DC conversion chip is turn-offed in timesharing, and electric capacity is carried out charge and discharge, like this AMOLED panel is carried out continued power.In order to save cost, the low power consumption driving circuit in the utility model can be integrated on the AMOLED panel.
Claims (3)
1.AMOLED panel low power consumption driving circuit is characterized in that: comprise metal-oxide-semiconductor, electric capacity and controller; The source electrode of described metal-oxide-semiconductor connects the voltage output end of DC/DC conversion chip, and the grid of metal-oxide-semiconductor connects controller, and the drain electrode of metal-oxide-semiconductor connects the voltage input end of AMOLED panel, and capacity earth is passed through in the drain electrode of metal-oxide-semiconductor.
2. AMOLED panel low power consumption driving circuit as claimed in claim 1, it is characterized in that: described controller is a clock oscillator.
3. AMOLED panel low power consumption driving circuit as claimed in claim 1 or 2 is characterized in that: described AMOLED panel low power consumption driving circuit is integrated on the AMOLED panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203152871U CN201532754U (en) | 2009-11-20 | 2009-11-20 | Driving circuit with low power consumption for AMOLED panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203152871U CN201532754U (en) | 2009-11-20 | 2009-11-20 | Driving circuit with low power consumption for AMOLED panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201532754U true CN201532754U (en) | 2010-07-21 |
Family
ID=42528155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203152871U Expired - Fee Related CN201532754U (en) | 2009-11-20 | 2009-11-20 | Driving circuit with low power consumption for AMOLED panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201532754U (en) |
-
2009
- 2009-11-20 CN CN2009203152871U patent/CN201532754U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20171120 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |