CN201868076U - AMOLED (Active Matrix/Organic Light Emitting Diode) panel driving device with low power consumption - Google Patents
AMOLED (Active Matrix/Organic Light Emitting Diode) panel driving device with low power consumption Download PDFInfo
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- CN201868076U CN201868076U CN2010206038245U CN201020603824U CN201868076U CN 201868076 U CN201868076 U CN 201868076U CN 2010206038245 U CN2010206038245 U CN 2010206038245U CN 201020603824 U CN201020603824 U CN 201020603824U CN 201868076 U CN201868076 U CN 201868076U
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Abstract
The utility model relates to the technical field of plane display, in particular to an AMOLED (Active Matrix/Organic Light Emitting Diode) panel driving device with low power consumption, which solves the problem that the traditional driving devices are high in power consumption and short in service life due to heating. The key points of the technical scheme are as follows: the AMOLED panel driving device with low power consumption comprises a DC/DC conversion chip, an OLED (Organic Light Emitting Diode) panel, an energy recovery circuit and a switch controller, wherein the energy recovery circuit is connected with the DC/DC conversion chip and the OLED panel; and the switch controller is connected with the energy recovery circuit. The AMOLED panel driving device of the utility model has the effects of being low in power consumption, prolonging the service life of the AMOLED panel and being applicable to plane display.
Description
Technical field
The utility model relates to display technique field, plane, relates to a kind of AMOLED board driving mchanism of low-power consumption 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 OLED (Organic Light Emitting Diode) panel, therefore causes power consumption big, and causes the heating of DC/DC conversion chip and reduction serviceable life.Traditional AMOLED board driving mchanism as shown in Figure 1, it comprises DC/DC conversion chip and oled panel, and wherein two of the DC/DC conversion chip voltage output end ELVDD1, ELVSS1 are direct-connected with two voltage input end ELVDD2, ELVSS2 of oled panel respectively.
The utility model content
Technical problem to be solved in the utility model is: a kind of AMOLED board driving mchanism of low-power consumption 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: a kind of AMOLED board driving mchanism of low-power consumption, comprise DC/DC conversion chip, oled panel, energy recovery circuit and on-off controller, described energy recovery circuit connects DC/DC conversion chip and oled panel, and described on-off controller connects energy recovery circuit.
Described energy recovery circuit comprises first electronic switch, second electronic switch, first electric capacity and second electric capacity; The described first electronic switch input end connects the DC/DC conversion chip, and output terminal is by first capacity earth, and the connection oled panel; The described second electronic switch input end connects the DC/DC conversion chip, and output terminal is by second capacity earth, and the connection oled panel; The control end of described first electronic switch all is connected on-off controller with the control end of second electronic switch.
Described first electronic switch, second electronic switch all adopt the contact-type electronic switch.
Described contact-type electronic switch is a midget relay.
Described first electronic switch, second electronic switch all adopt contactless electronic beam switch.
Described contactless electronic beam switch is a metal-oxide-semiconductor, and the drain electrode of first metal-oxide-semiconductor connects the DC/DC conversion chip, and source electrode is by first capacity earth, and source electrode connects oled panel; The drain electrode of second metal-oxide-semiconductor connects the DC/DC conversion chip, and source electrode is by second capacity earth, and source electrode connects oled panel; The grid of first metal-oxide-semiconductor, second metal-oxide-semiconductor all connects on-off controller.
Described on-off controller is a clock oscillator.
The beneficial effects of the utility model are: power consumption is little, prolong AMOLED panel serviceable life.
Description of drawings
Fig. 1 is traditional AMOLED board driving mchanism synoptic diagram;
Fig. 2 is the AMOLED board driving mchanism synoptic diagram of the utility model embodiment.
Embodiment
The utility model will be further described below in conjunction with drawings and Examples.
The utility model discloses a kind of AMOLED board driving mchanism of low-power consumption, it is big to solve traditional drive unit power consumption, because of heating causes the problem that serviceable life is short.With respect to conventional art, its improvement is: increased energy recovery circuit and on-off controller on the basis of the AMOLED of conventional art board driving mchanism, come the output voltage time-shared switch of the switch motion of the switching device in the control energy restoring circuit to the DC/DC conversion chip by on-off controller, and utilize the continuous charge and discharge of the electric capacity in the energy recovery circuit that oled panel is kept continued power, so just can reduce power consumption, also reduced thermal value from another point of view, prolonged the AMOLED panel effect in serviceable life thereby reach.
Embodiment:
As shown in Figure 2, the AMOLED board driving mchanism of the low-power consumption in this example, comprise DC/DC conversion chip, oled panel, energy recovery circuit and on-off controller, described energy recovery circuit connects DC/DC conversion chip and oled panel, described on-off controller connects energy recovery circuit, described energy recovery circuit is subjected to the output voltage of the signal controlling time-shared switch DC/DC conversion chip of on-off controller, and provides continuous voltage for oled panel.Described energy recovery circuit comprises the first metal-oxide-semiconductor a, the second metal-oxide-semiconductor c, the first electric capacity b and the second electric capacity d, and the drain electrode of the first metal-oxide-semiconductor a connects the DC/DC conversion chip, and source electrode is by the first electric capacity b ground connection, and source electrode connects oled panel; The drain electrode of the second metal-oxide-semiconductor c connects the DC/DC conversion chip, and source electrode is by the second electric capacity d ground connection, and source electrode connects oled panel; The grid of the first metal-oxide-semiconductor a, the second metal-oxide-semiconductor c all connects on-off controller.Wherein, on-off controller can be selected clock oscillator for use, and its frequency of operation is consistent with the sweep frequency of oled panel.
Its principle of work is: control the first metal-oxide-semiconductor a by the on-off controller output switching signal, the conducting of the second metal-oxide-semiconductor c or end, thereby carry out the output voltage ELVDD1 of time-shared switch DC/DC conversion chip, ELVSS1, and to the first electric capacity b, the second electric capacity d fills, discharge, at the first metal-oxide-semiconductor a, during the second metal-oxide-semiconductor c cut-off state, be output voltage ELVDD1, when ELVSS1 disconnects, also can continue by the first electric capacity b, second electric capacity d discharge, output voltage ELVDD2, ELVSS2 carries out continued power to oled panel, reduced the power-on time of DC/DC conversion chip, promptly reduced power consumption, also bring the effect that reduces its heating, thereby increase the service life, the switching signal of the on-off controller output here and the sweep frequency of oled panel will be mated.
First electronic switch in the utility model, second electronic switch also can adopt contact-type electronic switch (for example midget relay) except adopting noncontacting switch, also can adopt PLC control for on-off controller.Metal-oxide-semiconductor adopts N raceway groove or P raceway groove all can.
The utility model scheme required for protection comprises but is not limited only to the foregoing description; for a person skilled in the art; the formation of energy recovery circuit can be taked various ways; as long as the input voltage that can reach oled panel carries out time-shared switch; therefore, for might to be equal to alternative mode all be to belong to protection domain of the present utility model.
Claims (7)
1. the AMOLED board driving mchanism of a low-power consumption, comprise DC/DC conversion chip, oled panel, it is characterized in that: also comprise energy recovery circuit and on-off controller, described energy recovery circuit connects DC/DC conversion chip and oled panel, and on-off controller connects energy recovery circuit.
2. the AMOLED board driving mchanism of a kind of low-power consumption as claimed in claim 1, it is characterized in that: described energy recovery circuit comprises first electronic switch, second electronic switch, first electric capacity and second electric capacity; The described first electronic switch input end connects the DC/DC conversion chip, and output terminal is by first capacity earth, and the connection oled panel; The described second electronic switch input end connects the DC/DC conversion chip, and output terminal is by second capacity earth, and the connection oled panel; The control end of described first electronic switch all is connected on-off controller with the control end of second electronic switch.
3. the AMOLED board driving mchanism of a kind of low-power consumption as claimed in claim 2, it is characterized in that: described first electronic switch, second electronic switch all adopt the contact-type electronic switch.
4. the AMOLED board driving mchanism of a kind of low-power consumption as claimed in claim 3, it is characterized in that: described contact-type electronic switch is a midget relay.
5. the AMOLED board driving mchanism of a kind of low-power consumption as claimed in claim 2, it is characterized in that: described first electronic switch, second electronic switch all adopt contactless electronic beam switch.
6. the AMOLED board driving mchanism of a kind of low-power consumption as claimed in claim 5, it is characterized in that: described contactless electronic beam switch is a metal-oxide-semiconductor, the drain electrode of first metal-oxide-semiconductor connects the DC/DC conversion chip, and source electrode is by first capacity earth, and source electrode connects oled panel; The drain electrode of second metal-oxide-semiconductor connects the DC/DC conversion chip, and source electrode is by second capacity earth, and source electrode connects oled panel; The grid of first metal-oxide-semiconductor, second metal-oxide-semiconductor all connects on-off controller.
7. as the AMOLED board driving mchanism of any described a kind of low-power consumption of claim 1 to 6, it is characterized in that: described on-off controller is a clock oscillator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206038245U CN201868076U (en) | 2010-11-12 | 2010-11-12 | AMOLED (Active Matrix/Organic Light Emitting Diode) panel driving device with low power consumption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206038245U CN201868076U (en) | 2010-11-12 | 2010-11-12 | AMOLED (Active Matrix/Organic Light Emitting Diode) panel driving device with low power consumption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868076U true CN201868076U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206038245U Expired - Lifetime CN201868076U (en) | 2010-11-12 | 2010-11-12 | AMOLED (Active Matrix/Organic Light Emitting Diode) panel driving device with low power consumption |
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| Country | Link |
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| CN (1) | CN201868076U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111432520A (en) * | 2020-04-02 | 2020-07-17 | 广东晟合技术有限公司 | Balancing method for driving O L ED panel with low power consumption |
| US10741120B2 (en) | 2016-05-31 | 2020-08-11 | Boe Technology Group Co, Ltd. | AMOLED display device based ELVDD power supply method and power supply apparatus, and display device |
-
2010
- 2010-11-12 CN CN2010206038245U patent/CN201868076U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10741120B2 (en) | 2016-05-31 | 2020-08-11 | Boe Technology Group Co, Ltd. | AMOLED display device based ELVDD power supply method and power supply apparatus, and display device |
| CN111432520A (en) * | 2020-04-02 | 2020-07-17 | 广东晟合技术有限公司 | Balancing method for driving O L ED panel with low power consumption |
| CN111432520B (en) * | 2020-04-02 | 2022-04-19 | 晟合微电子(肇庆)有限公司 | Equalization method for driving OLED panel with low power consumption |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
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| CX01 | Expiry of patent term |