CN101056325A - Organic luminescence display unit of the mobile phone and method for reducing the power consumption of the mobile phone - Google Patents
Organic luminescence display unit of the mobile phone and method for reducing the power consumption of the mobile phone Download PDFInfo
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- CN101056325A CN101056325A CN 200710111083 CN200710111083A CN101056325A CN 101056325 A CN101056325 A CN 101056325A CN 200710111083 CN200710111083 CN 200710111083 CN 200710111083 A CN200710111083 A CN 200710111083A CN 101056325 A CN101056325 A CN 101056325A
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Abstract
The present invention discloses an organic light-emitting display unit used in a mobile telephone, which comprises a boost module, an OLED driving module, an OLED display screen and a control module, wherein said control module is used for receiving battery voltage, inputting battery voltage to the boost module when OLED enable signal is put high and shutting off battery voltage input to the boost module when OLED enable signal is put low. The present invention further discloses a method used for lowering power consumption of a mobile telephone and comprising the follwong steps: judging states of the OLED enable singal, inputting battery voltage to the boost module when the OLED enable signal is put high and shutting off battery voltage input to the boost module when the OLED enable signal is put low. The present invention resolves the problem that part current consumption still exists in the OLED driving module when a mobile telephone is kept in standby or shutdown condition, reduces current in a mobile telephone in standby condition, and improves work time of a mobile telephone.
Description
Technical field
The present invention relates to technical field of mobile terminals, relate in particular to the organic luminescence display unit in a kind of mobile phone and reduce the method for mobile telephone power consumption.
Background technology
Mobile phone is as the instrument of the frequent communication of using of a kind of modern people, become necessity indispensable in the daily life, the demand of mobile phone being used as the fashional consumption product along with the consumer progressively increases, simultaneously also for can be in the competition of fierce day by day mobile phone products the establishment advantage, now each mobile phone producer all active adoption have the more display screen of high-quality display effect.
OLED (Organic Light Emitting Display, organic light emitting display) unit is not owing to need backlight, whole structural thickness is thinner, application prospect in ultra thin handset is better, and because the OLED unit has adopted the display mode of active illuminating, its visual angle is wideer, and response speed is faster.
See also Fig. 1, this figure is the structured flowchart of the OLED unit in the mobile phone in the prior art, it mainly comprises interface module, OLED display screen and OLED driver module, because OLED driver module driving OLED display screen needs higher voltage, therefore the boost module that also comprises a direct current in the structure of the OLED unit in the mobile phone is used for the low-voltage that mobile phone provides is promoted to the high voltage of driving OLED display screen.Below in conjunction with Fig. 1 the operation principle of the OLED unit in the mobile phone is described:
Interface module is with cell voltage (VBAT) the input boost module that receives, with the various control signals that receive (enable, sheet choosing, read-write, data/command selection etc.) and data-signal input OLED driver module, boost module rises to voltage (OLED_VCC) the back input OLED driver module of OLED driver module need of work with cell voltage (VBAT), and the driving function of OLED driver module by its inside will need content displayed to convert the corresponding signal of telecommunication to and the driving OLED display screen shows.
See also Fig. 2, this figure is the circuit theory diagrams of the boost module of the OLED unit in the mobile phone in the prior art, as seen from the figure, when cell phone standby (when the OLED display screen need not show) or the shutdown after, because the electric current that cell voltage (VBAT) produces still can be by the inductance L 1 in the OLED driver module, diode D1 is to the OLED_VCC end of OLED driver module, make that the partial circuit of OLED driver module inside is still in running order, OLED driver module inside still has the part current drain, make battery electric quantity produce unnecessary consumption, thereby reduced the stand-by time of mobile phone.
Summary of the invention
The invention provides the organic luminescence display unit in a kind of mobile phone and reduce the method for mobile telephone power consumption, in order to solve the leakage problem of the OLED driver module of the OLED unit in the mobile phone in the prior art.
Organic luminescence display unit in a kind of mobile phone, comprise boost module, OLED driver module and OLED display screen, wherein, described boost module is used for cell voltage is risen to behind the required voltage of OLED driver module its input OLED driver module, and the driven OLED display screen after the utilization of OLED driver module is boosted shows needs content displayed; Also comprise,
Control module is used to receive cell voltage, puts when high at the OLED enable signal, and cell voltage is imported boost module, puts when low at the OLED enable signal, cuts off the cell voltage of input boost module.
Preferable, when described OLED display screen need show, the OLED enable signal was put height, and when described OLED display screen did not need to show, the OLED enable signal was put low.
Preferable, comprise a N channel field-effect pipe and a P-channel field-effect transistor (PEFT) pipe in the described control module, the source ground of wherein said N channel field-effect pipe, grid receives the OLED enable signal, drain electrode connects the grid of described P-channel field-effect transistor (PEFT) pipe, described cell voltage is imported the grid and the source electrode of P-channel field-effect transistor (PEFT) pipe respectively, and the drain electrode of described P-channel field-effect transistor (PEFT) pipe is connected with the voltage input end of boost module.
Preferable, when described OLED enable signal is put when high, the conducting of described N channel field-effect pipe, the grid of P-channel field-effect transistor (PEFT) pipe is equivalent to ground connection, makes the P-channel field-effect transistor (PEFT) pipe input boost module of cell voltage by conducting; Put when low when described OLED enable signal, described N channel field-effect pipe ends, and the grid of P-channel field-effect transistor (PEFT) pipe is put height, and the P-channel field-effect transistor (PEFT) pipe that ends will import the cell voltage cut-out of boost module.
A kind of method that reduces mobile telephone power consumption comprises step:
A, judge the state of OLED enable signal, when the OLED enable signal is put when high, execution in step B is when the OLED enable signal is put when low execution in step C;
B, cell voltage is imported in the boost module, boost module rises to behind the required voltage of OLED driver module cell voltage with its input OLED driver module, and showing with this driving OLED display screen needs content displayed;
The cell voltage of C, cut-out input boost module.
Preferable, when described OLED display screen need show, the OLED enable signal was put height, and when described OLED display screen did not need to show, the OLED enable signal was put low.
The present invention is by having increased control module at mobile phone in organic luminescence display unit, when the OLED display screen does not need to show, this control module can be cut off the cell voltage of input boost module, thereby when having solved mobile phone and being in standby or off-mode, the OLED driver module still has the problem of part current drain, and the standby current that has reduced mobile phone has improved the stand-by time of mobile phone simultaneously.
Description of drawings
Fig. 1 is the structured flowchart of the OLED unit in the mobile phone in the prior art;
Fig. 2 is the circuit theory diagrams of the boost module of the OLED unit in the mobile phone in the prior art;
Fig. 3 is the structured flowchart of the organic luminescence display unit in the mobile phone of the present invention;
Fig. 4 is the circuit theory diagrams of the control module in the organic luminescence display unit of the present invention;
Fig. 5 reduces the flow chart of the method for mobile telephone power consumption for the present invention.
Embodiment
Major technique of the present invention design is by having increased control module at mobile phone in organic luminescence display unit, when the OLED display screen does not need to show, this control module can be cut off the cell voltage of input boost module, thereby when having solved mobile phone and being in standby or off-mode, the OLED driver module still has the problem of part current drain, and the standby current that has reduced mobile phone has improved the stand-by time of mobile phone simultaneously.
Below in conjunction with each accompanying drawing specific implementation process of the present invention is carried out further detailed elaboration.
See also Fig. 3, this figure is the structured flowchart of the organic luminescence display unit in the mobile phone of the present invention, and it mainly comprises interface module, control module, boost module, OLED driver module and OLED display screen, and wherein, the main effect of each module is as follows:
Interface module, be used to receive battery voltage signal, various control signal (OLED enable signal, chip selection signal, read-write, data/command selection signal etc.), display data signal, with wherein battery voltage signal and the OLED enable signal input control module in the control signal, with various control signals and display data signal input OLED driver module;
Control module, the battery voltage signal of receiving interface module output, when the OLED display screen need show, be that the OLED enable signal is put when high, cell voltage is imported boost module, when the OLED display screen did not need to show, promptly the OLED enable signal was put when hanging down, and cuts off the cell voltage of input boost module;
Boost module is used for cell voltage with control module output and rises to behind the required voltage of OLED driver module its input OLED driver module;
The OLED driver module as driving voltage, under the control of the control signal of interface module output, shows the needs content displayed according to the display data signal driving OLED display screen that receives with the voltage of boost module output.
See also Fig. 4, this figure is the circuit theory diagrams of the control module in the organic luminescence display unit of the present invention, as seen from the figure, comprise a N channel field-effect pipe Q1 and a P-channel field-effect transistor (PEFT) pipe Q2 in the described control module, wherein the source S of Q1 is by resistance R 5 ground connection, the grid G of Q1 is used to receive OLED enable signal (OLED_EN), the drain D of Q1 connects the grid G of Q2, described cell voltage (VBAT) is imported grid G and the source S of Q2 respectively, and the drain D of Q2 is connected with the voltage input end of boost module.
When the OLED display screen need show, be that OLED enable signal (OLED_EN) is put when high, when enabling the OLED driver module, the Q1 conducting, the grid of Q2 is equivalent to ground connection, and the Q2 conducting is because the pressure drop of field effect transistor is very little, therefore the cell voltage (VBAT_OUT) of output is compared with the cell voltage (VBAT) of input does not have obvious loss, enough driving OLED boost modules; When the OLED display screen does not need to show (mobile phone is in standby or off-mode), be that OLED enable signal (OLED_EN) is put when hanging down, Q1 ends, and the grid of Q2 is equivalent to and connects cell voltage (VBAT), Q2 ends, and the cell voltage that will import boost module (VBAT) cuts off.
Corresponding to above-mentioned OLED unit, the present invention and then proposed a kind of method that reduces mobile telephone power consumption sees also Fig. 5, and this figure is the flow chart that the present invention reduces the method for mobile telephone power consumption, and it mainly comprises step:
Step S10, judge the state of OLED enable signal, when the OLED enable signal is put when high, execution in step S11 is when the OLED enable signal is put when low execution in step S12;
When described OLED display screen need show, the OLED enable signal was put height, and when described OLED display screen did not need to show, the OLED enable signal was put low.
Step S11, cell voltage is imported in the boost module, boost module rises to behind the required voltage of OLED driver module cell voltage with its input OLED driver module, and showing with this driving OLED display screen needs content displayed.
The cell voltage of step S12, cut-out input boost module.
By adopting technique scheme, the invention solves mobile phone when being in standby or off-mode, the OLED driver module still has the problem of part current drain, has reduced the standby current of mobile phone, has improved the stand-by time of mobile phone simultaneously.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1, the organic luminescence display unit in a kind of mobile phone, comprise boost module, OLED driver module and OLED display screen, wherein, described boost module is used for cell voltage is risen to behind the required voltage of OLED driver module its input OLED driver module, and the driven OLED display screen after the utilization of OLED driver module is boosted shows needs content displayed; It is characterized in that, also comprise,
Control module is used to receive cell voltage, puts when high at the OLED enable signal, and cell voltage is imported boost module, puts when low at the OLED enable signal, cuts off the cell voltage of input boost module.
2, the organic luminescence display unit in the mobile phone as claimed in claim 1 is characterized in that, when described OLED display screen need show, the OLED enable signal was put height, and when described OLED display screen did not need to show, the OLED enable signal was put low.
3, the organic luminescence display unit in the mobile phone as claimed in claim 2, it is characterized in that, comprise a N channel field-effect pipe and a P-channel field-effect transistor (PEFT) pipe in the described control module, the source ground of wherein said N channel field-effect pipe, grid receives the OLED enable signal, drain electrode connects the grid of described P-channel field-effect transistor (PEFT) pipe, and described cell voltage is imported the grid and the source electrode of P-channel field-effect transistor (PEFT) pipe respectively, and the drain electrode of described P-channel field-effect transistor (PEFT) pipe is connected with the voltage input end of boost module.
4, the organic luminescence display unit in the mobile phone as claimed in claim 3, it is characterized in that, when described OLED enable signal is put when high, the conducting of described N channel field-effect pipe, the grid of P-channel field-effect transistor (PEFT) pipe is equivalent to ground connection, makes cell voltage import boost module by the P-channel field-effect transistor (PEFT) pipe of conducting; Put when low when described OLED enable signal, described N channel field-effect pipe ends, and the grid of P-channel field-effect transistor (PEFT) pipe is put height, and the P-channel field-effect transistor (PEFT) pipe that ends will import the cell voltage cut-out of boost module.
5, a kind of method that reduces mobile telephone power consumption is characterized in that, comprises step:
A, judge the state of OLED enable signal, when the OLED enable signal is put when high, execution in step B is when the OLED enable signal is put when low execution in step C;
B, cell voltage is imported in the boost module, boost module rises to behind the required voltage of OLED driver module cell voltage with its input OLED driver module, and showing with this driving OLED display screen needs content displayed;
The cell voltage of C, cut-out input boost module.
6, the method for reduction mobile telephone power consumption as claimed in claim 5 is characterized in that, when described OLED display screen need show, the OLED enable signal was put height, and when described OLED display screen did not need to show, the OLED enable signal was put low.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710111083 CN101056325A (en) | 2007-06-15 | 2007-06-15 | Organic luminescence display unit of the mobile phone and method for reducing the power consumption of the mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200710111083 CN101056325A (en) | 2007-06-15 | 2007-06-15 | Organic luminescence display unit of the mobile phone and method for reducing the power consumption of the mobile phone |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318895A (en) * | 2014-10-31 | 2015-01-28 | 上海斐讯数据通信技术有限公司 | Display device control circuit |
| CN109473068A (en) * | 2018-12-20 | 2019-03-15 | 深圳市亿境虚拟现实技术有限公司 | A kind of head-mounted display backlight black plug control circuit and control method |
| CN110599947A (en) * | 2019-08-15 | 2019-12-20 | 珠海格力电器股份有限公司 | Display screen on-off control circuit, display screen and control method |
| CN112576808A (en) * | 2020-11-30 | 2021-03-30 | 浙江中控技术股份有限公司 | Display screen system for intelligent electric valve positioner and application method thereof |
-
2007
- 2007-06-15 CN CN 200710111083 patent/CN101056325A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104318895A (en) * | 2014-10-31 | 2015-01-28 | 上海斐讯数据通信技术有限公司 | Display device control circuit |
| CN109473068A (en) * | 2018-12-20 | 2019-03-15 | 深圳市亿境虚拟现实技术有限公司 | A kind of head-mounted display backlight black plug control circuit and control method |
| CN110599947A (en) * | 2019-08-15 | 2019-12-20 | 珠海格力电器股份有限公司 | Display screen on-off control circuit, display screen and control method |
| CN112576808A (en) * | 2020-11-30 | 2021-03-30 | 浙江中控技术股份有限公司 | Display screen system for intelligent electric valve positioner and application method thereof |
| CN112576808B (en) * | 2020-11-30 | 2023-02-17 | 浙江中控技术股份有限公司 | Display screen system for intelligent electric valve positioner and application method thereof |
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