CN104143323B - A kind of Micro Energy Lose energy-saving displaying method - Google Patents
A kind of Micro Energy Lose energy-saving displaying method Download PDFInfo
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- CN104143323B CN104143323B CN201410351148.XA CN201410351148A CN104143323B CN 104143323 B CN104143323 B CN 104143323B CN 201410351148 A CN201410351148 A CN 201410351148A CN 104143323 B CN104143323 B CN 104143323B
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Abstract
The invention discloses a kind of Micro Energy Lose energy-saving displaying method in energy-conservation display technique field.The environmentally size of illumination, controls printing opacity and the shading characteristic of LCDs, forms dark stroke and bright stroke display mode respectively, ensures that displaying contents and background have the discernmible contrast of human eye, the information required for reading.The present invention adopts light and shade contrast to realize energy-conservation display, only needs the corresponding bright stroke of selection and dark stroke, can show information, decrease the consumption of electric energy, and can be applied to picture perpetual calendar, the exchange rate display screen of bank, the technical fields such as household digital table.
Description
Technical field
The invention belongs to energy-conservation display technique field, particularly a kind of Micro Energy Lose energy-saving displaying method.
Background technology
Display screen is that certain e-file is shown to a kind of show tools screen reflexing to again human eye by specific transmission equipment.Its application widely, arrives satellite monitoring greatly, little of mobile phone, PAD display.He occupies critical role in the process of Information issued, can say in modern society, and its figure is ubiquitous.
And for the display screen such as exchange rate display screen, household digital table of picture perpetual calendar, bank, for existing LED and LCD display, it is not enough main manifestations is LED and LCD is all utilize electric energy, produces the light of certain brightness.LED is with the directly display of this light, and LCD controls the shading of screen and light transmission features shows.When the illumination produced is greater than the illumination of surrounding environment, form comparison of light and shade, information can be captured by human eye.And display screen present position is different, in different time sections, the illumination of surrounding environment is also not quite similar.Ensure that display screen can use, the bright intensity that must will produce is greater than the maximum intensity of surrounding environment.When surrounding environment illumination is larger, only have generation high-brightness light could produce contrast with environment bright; And when environment is darker around, there is no need the light producing high brightness, so just cause energy dissipation, and the high-brightness light produced is more dazzling, easily eye is damaged.
In order to respond the call of the energy-saving and emission-reduction policy of country, a lot of patent has all done suitable improvement to display screen.
Chinese patent 201120482767 (on 08 01st, 2012 day for announcing) relates to display technology field, it comprises housing, LCDs and spontaneous tabula rasa, LCDs is fixed on the leading section of housing, the side opening of described housing has the mounting hole for inserting spontaneous tabula rasa, and spontaneous tabula rasa is plugged in the rearward end of housing by mounting hole.Spontaneous tabula rasa is luminous under darker environment after can absorbing natural light, be used for providing area source to LCDs, therefore before using, a period of time is irradiated under spontaneous tabula rasa is placed on natural light, being inserted by the mounting hole of the side of housing is socketed in housing again, just can provide area source for LCDs.
Chinese patent 201010101892 (on 06 16th, 2010 day for announcing) discloses a kind of energy-efficient display, add control loop microprocessor, voltage adjuster, can main board work be controlled, thus display can be made automatically to reach the object reducing energy consumption in the power-offstate.
Chinese patent 201210566083 (on 04 03rd, 2013 day for announcing) relates to a kind of saving energy of screen display packing and device.Described method comprises the steps: to gather surround lighting light intensity, and is carried out pre-service and be converted to digital signal; Judge that the surround lighting light intensity belonging to surround lighting light intensity is interval by digital signal; The surround lighting light intensity interval pre-set according to affiliated surround lighting light intensity interval query and the corresponding table of pulse-width signal, determine the pulse-width signal exported; The brightness being controlled screen by pulse-width signal is exported.
Chinese patent 201220073902 (Dec 05 2012 day for announcing) discloses the energy-conservation display screen of a kind of LED, display unit plate adopts 3.3V, 5V to power, TTL is independent separately, lamp is adopted to drive the mode being separated and being separated with lamp lamp, actual ON operation voltage that is red, green light pipe adopts different voltage, and LED chip has mode of operation, sleep pattern and zero data form; Select the drive IC of low power consuming, again optimize driving power rectification circuit, use different Power supplies, overallly can reduce the power consumption of about 35%.
Chinese patent 201010101892 (on 04 11st, 2012 day for announcing) discloses a kind of energy-efficient display, it is characterized in that: if display is in running order, then voltage adjuster is to mainboard output voltage, and mainboard is started working, and is less than 0.5W when display is energy-conservation after shutdown; If display is in off position, then voltage adjuster does not give mainboard output voltage, and mainboard does not also work, and at this moment display is still in power save mode, is now energy-conservationly less than 0.5W.
The technology that described patent uses above all reaches energy-conservation object, but does not all mention application light and shade contrast to realize energy-conservation display.Meanwhile, for picture perpetual calendar, the exchange rate display screen of bank, the display screens such as household digital table, the patented technology that these technology above have can not be applied, and some considerations are thorough not, some energy-saving effects are good not, large-scale popularization in this kind of display screen of all having no idea.
Summary of the invention
The object of this invention is to provide a kind of Micro Energy Lose energy-saving displaying method, it is characterized in that, described method is the size of environmentally illumination, Control Component or MCU control printing opacity and the shading characteristic of LCDs, form dark stroke and bright stroke display mode respectively, ensure that displaying contents and background have the discernmible contrast of human eye.Concrete grammar comprises the steps:
Step 1: according to the resistance of selected photoresistance and the corresponding relation of ambient light illumination, obtain the ambient light illumination L of surrounding environment.
Step 2: the cut off value L that ambient light illumination is set
0, by the ambient light illumination L that obtains and cut off value L
0relatively, when ambient light illumination L is more than or equal to cut off value L
0time, adopt dark stroke display mode, namely do not select bright source, namely be that Control Component or MCU control display screen to need the electric field of the pixel of the content shown be set to 0, represent low level or without level, now Liquid Crystal Molecules Alignment is chaotic, stop extraneous natural light light to pass through, realize shading characteristic; Rest of pixels point electric field location is set to 1, represents high level, and now ordered liquid crystal molecule arrangement, is beneficial to extraneous natural light light and passes through, thus realize light transmission features.Such displaying contents and background pass through shading
Form light and shade contrast with printing opacity, human eye just can be observed; When ambient light illumination L is less than L
0, adopt bright stroke display mode.Described bright stroke pattern and dark stroke pattern control display especially by Control Component or MCU programming realization, and dark stroke pattern does not need bright source, and bright stroke pattern needs bright source, and fluorescence is selected in this bright source first.
In step 1, the concrete grammar obtaining ambient light illumination L is: by photoresistance R
1with determine valued resistor R
2be connected on voltage source U.Can obtain according to Ohm law:
U
2＝IR
2(2)
U
L＝U-U
2(3)
Can find out according to formula (1), (2), (3), when ambient light illumination changes, the resistance R of photoresistance
1also change, voltage U and resistance R thereupon
2constant, the electric current I flowing through photoresistance two ends changes, thus changes fixed value resistance two ends difference U
2, final change photoresistance both end voltage difference U
l.
By the voltage difference U at photoresistance two ends
la/D (analog to digital conversion) mouth of Access Control assembly or MCU, can obtain both end voltage difference U
lnumerical value.The resistance R of photoresistance can be obtained by formula (4)
1.
According to the resistance of selected photoresistance and the corresponding relation of ambient light illumination, the ambient light illumination L of surrounding environment can be obtained.
In step 2, environmentally illumination and cut off value L
0between magnitude relationship, when ambient light illumination L is less than L
0time, the process building bright stroke display model is:
Step 201: select fluorescence as bright source, when surrounding environment illumination is less than L
0time, Control Component or MCU control display screen, by in LCDs, need the electric field of the pixel in the content of display to be set to 1, represent high level, now ordered liquid crystal molecule arrangement, be beneficial to fluorescent light to pass through, realize light transmission features, rest of pixels point position is set to shading status, such displaying contents and background form light and shade contrast by printing opacity and shading, and human eye just can be observed;
Step 202: when surrounding environment illumination is less than L
0and fluorescence is not when discharging, select LED or incandescent lamp as bright source, Control Component or MCU control display screen, by LCDs, the electric field of the pixel in the content of display is needed to be set to 1, represent high level, now ordered liquid crystal molecule arrangement, is beneficial to LED or incandescent lamp light passes through, realize light transmission features, rest of pixels point position is set to shading status, and such displaying contents and background form light and shade contrast by printing opacity and shading, and human eye just can be observed.
Place appropriate fluorescent material after described LCDs and absorb light when dark stroke, discharge light when bright stroke.
The LED that described LCDs is placed below or incandescent lamp, when fluorescence does not discharge, LED or incandescent lamp can be used as bright source, also can be fluorescence and supplement light.
Described photoresistance can real-time monitor surrounding environment illumination intensity signal, according to the display mode of this signal deciding LCDs.
Beneficial effect of the present invention compared with prior art tool has the following advantages:
(1) the present invention adopts light and shade contrast to realize energy-conservation display, only needs the corresponding bright stroke of selection and dark stroke, can show information, in dark stroke pattern, do not adopt bright source, in bright stroke pattern, first adopt fluorescence radiation, decrease the consumption of electric energy.
(2) the inventive method can be applied to picture perpetual calendar, the exchange rate display screen of bank, household digital table.
Accompanying drawing explanation
Fig. 1 photoresistance connection layout; R1 is photoresistance, and R2 is fixed value resistance, and U is voltage source, and S is switch.
Fig. 2 photoresistance resistance and ambient light illumination L graph of a relation;
Fig. 3 is control procedure flow chart of the present invention;
Fig. 4 be surrounding environment brighter time dark stroke display mode;
Fig. 5 be surrounding environment darker time bright stroke fluorescence display pattern;
Fig. 6 be surrounding environment darker time bright stroke LED or incandescent lamp light-emitting display mode;
Embodiment:
The invention provides a kind of Micro Energy Lose display packing, be explained below in conjunction with accompanying drawing.
Shown in Fig. 1, by photoresistance R
1with determine valued resistor R
2be connected on voltage source U.Photoresistance is the resistor that a kind of resistance value utilizing the photoelectric effect of semiconductor to make changes with the power of incident light; Incident light is stronger, and resistance is less, and incident light is more weak, and resistance is larger.When ambient light illumination changes, the resistance R of photoresistance
1also change, voltage U and resistance R thereupon
2constant, the electric current I flowing through photosensitive two ends changes, thus changes fixed value resistance two ends difference U
2, final change photoresistance two ends pressure reduction U
l.By the voltage difference U at photoresistance two ends
la/D (analog to digital conversion) mouth of Access Control assembly or MCU, can obtain both end voltage difference U
lnumerical value.The resistance R of photoresistance can be obtained by formula (4)
1.According to the resistance of selected photoresistance and the corresponding relation (as shown in Figure 2) of ambient light illumination, the ambient light illumination L (unit is lx) of surrounding environment can be obtained.The present invention is by the cut off value L of bright stroke and dark stroke
0tentatively be decided to be 1lx.When ambient light illumination L is more than or equal to L
0time, adopt dark stroke display mode; If be less than L
0, adopt bright stroke display mode.And when actual fabrication product, this cut off value should be set as the case may be.
Figure 2 shows that photoresistance resistance and ambient light illumination L graph of a relation, photoresistance resistance and the inversely proportional relation of ambient light illumination can be found out, the photoresistance of unlike material from have different function curves between ambient light illumination.
Figure 3 shows that control procedure flow chart of the present invention.First initialization is carried out to selected Control Component or MCU, and according to extraneous light situation think setting boundary parameter L
0.MCU is as control display module.If select MCU, less demanding to it, mainly contain following some: pin number, more than 20, carries A/D and serial port function, and storage space is more than 8K, the Mega of recommendation Atmel series, the STC12 series of macrocrystalline and the STM32 series etc. of ARM.Then the size of environmentally illumination, selects bright stroke or dark stroke.The physical characteristics of liquid crystal is: when not adding electric field, Liquid Crystal Molecules Alignment is chaotic, stops light to pass through; After adding electric field, it is orderly that Liquid Crystal Molecules Alignment becomes, and light is easily passed through.Therefore electric field can allow liquid crystal as gate, intercept or allow light penetration.Liquid crystal display has certain resolution, and for LCD12864, its resolution is 128*64, and namely it always has 128*64 pixel, and each pixel position can putting in order by electric field controls liquid crystal molecule.When the electric field of a pixel be set to 0 (low level or without level) time, the Liquid Crystal Molecules Alignment of this position is chaotic, stops light to pass through, realizes shading characteristic; When being set to 1 (high level), ordered liquid crystal molecule arranges, and is beneficial to light and passes through, realize light transmission features.Control Component or MCU can control the electric field of whole LCDs, and namely it can control shading and the light transmission features of each pixel position of LCDs.If screen will show date and the time, during dark stroke display mode, select fluorescence or LED or incandescent lamp as bright source, the screen pixels point position at the date Hour Minute Second place of display is set to light transmission state, rest of pixels point position is set to shading status simultaneously; Bright stroke display mode does not use bright source, and displaying contents pixel position is set to shading status, and rest of pixels point position is set to light transmission state.
Figure 4 shows that dark stroke display mode when surrounding environment is brighter, it is formed primarily of Control Component or MCU, LCDs and photoresistance, alternative add serial ports (as RS232, RS485 etc.) and host computer (as computer etc.) or entering apparatus (as hand-held instrument etc.), host computer or entering apparatus link Control Component by serial ports, by the voltage difference U at photoresistance two ends
la/D (analog to digital conversion) mouth of Access Control assembly or MCU, can obtain both end voltage difference U
lnumerical value.The resistance R of photoresistance can be obtained by formula (4)
1.According to the resistance of selected photoresistance and the corresponding relation of ambient light illumination, the ambient light illumination L (unit is lx) of surrounding environment can be obtained, then with cut off value L
0relatively, L is more than or equal to when being recorded surrounding environment illumination by photoresistance
0time, Control Component or MCU control display screen and open dark stroke pattern.In such a mode, the present invention does not use bright source, and displaying contents pixel position is set to shading status, and rest of pixels point position is set to light transmission state, and displaying contents position is relatively dark, and result in formation of light and shade contrast, human eye can observe displaying contents.
Be depicted as shown in Fig. 5 surrounding environment darker time bright stroke display mode, it is formed primarily of Control Component or MCU, LCDs and photoresistance, alternative add serial ports (as RS232, RS485 etc.) and host computer (as computer etc.) or entering apparatus (as hand-held instrument etc.), host computer or entering apparatus link Control Component by serial ports, by the voltage difference U at photoresistance two ends
la/D (analog to digital conversion) mouth of Access Control assembly or MCU, can obtain both end voltage difference U
lnumerical value.The resistance R of photoresistance can be obtained by formula (4)
1.According to the resistance of selected photoresistance and the corresponding relation of ambient light illumination, the ambient light illumination L (unit is lx) of surrounding environment can be obtained, then with cut off value L
0relatively, L is less than when being recorded surrounding environment illumination by photoresistance
0time, Control Component or MCU control display screen and open bright stroke display mode.In such a mode, select fluorescence as bright source, displaying contents pixel position is set to light transmission state, rest of pixels point position is set to shading status, and such displaying contents position is relatively bright, and light and shade presents a contrast, and human eye just can be observed simultaneously.
Figure 6 shows that bright stroke standby mode when surrounding environment is darker, when surrounding environment illumination is less than L
0and fluorescence does not discharge or discharges bright intensity when being not enough to allow human eye find, can enable LED or incandescent lamp, it both can be used as the bright source of LCDs, can supplement bright intensity again for fluorescent material, increase accommodation of the present invention, open up extensively application.
Claims (6)
1. a Micro Energy Lose energy-saving displaying method, it is characterized in that, described method is the size of environmentally illumination, Control Component controls printing opacity and the shading characteristic of LCDs, form dark stroke and bright stroke display mode respectively, ensure that displaying contents and background have the discernmible contrast of human eye, specifically comprise the steps:
Step 1: according to the resistance of selected photoresistance and the corresponding relation of ambient light illumination, obtain the ambient light illumination L of surrounding environment;
Step 2: the cut off value L that ambient light illumination is set
0, by the ambient light illumination L that obtains and cut off value L
0relatively, when ambient light illumination L is more than or equal to cut off value L
0time, adopt dark stroke display mode, namely do not select bright source; Namely be that Control Component controls display screen to need the electric field of the pixel of the content shown be set to 0, represent low level or without level, now Liquid Crystal Molecules Alignment is chaotic, extraneous natural light light is stoped to pass through, realize shading characteristic, rest of pixels point electric field location is set to 1, represents high level, now ordered liquid crystal molecule arrangement, is beneficial to extraneous natural light light and passes through; Thus realizing light transmission features, such displaying contents and background form light and shade contrast by shading and printing opacity, and human eye just can be observed; When ambient light illumination L is less than L
0, adopt bright stroke display mode; Described bright stroke pattern and dark stroke pattern control display especially by Control Component programming realization, and dark stroke pattern does not need bright source, and bright stroke pattern needs bright source, and fluorescence is selected in this bright source first.
2. a kind of Micro Energy Lose energy-saving displaying method according to claim 1, is characterized in that, in described step 1, the concrete grammar obtaining ambient light illumination L is: by photoresistance R
1with determine valued resistor R
2be connected on voltage source U, can obtain according to Ohm law:
U
2＝IR
2(2)
U
L＝U-U
2(3)
Can find out according to formula (1), (2), (3), when ambient light illumination L changes, the resistance R of photoresistance
1also change, voltage U and resistance R thereupon
2constant, the electric current I flowing through photoresistance two ends changes, thus changes fixed value resistance two ends difference U
2, final change photoresistance both end voltage difference U
l;
By the voltage difference U at photoresistance two ends
lthe A/D analog to digital conversion mouth of Access Control assembly, can obtain both end voltage difference U
lnumerical value; The resistance R of photoresistance can be obtained by formula (4)
1,
According to the resistance of selected photoresistance and the corresponding relation of ambient light illumination, the ambient light illumination L of surrounding environment can be obtained.
3. a kind of Micro Energy Lose energy-saving displaying method according to claim 1, is characterized in that, in described step 2, and environmentally illumination L and cut off value L
0between magnitude relationship, when ambient light illumination L is less than L
0time, the process building bright stroke display model is:
Step 201: select fluorescence as bright source, when surrounding environment illumination is less than L
0time, Control Component controls display screen, by in LCDs, need the electric field of the pixel in the content of display to be set to 1, represent high level, now ordered liquid crystal molecule arrangement, be beneficial to fluorescent light to pass through, realize light transmission features, rest of pixels point position is set to shading status, such displaying contents and background form light and shade contrast by printing opacity and shading, and human eye just can be observed;
Step 202: when surrounding environment illumination is less than L
0and fluorescence is not when discharging, select LED or incandescent lamp as bright source, Control Component controls display screen, by LCDs, the electric field of the pixel in the content of display is needed to be set to 1, represent high level, now ordered liquid crystal molecule arrangement, is beneficial to LED or incandescent lamp light passes through, realize light transmission features, rest of pixels point position is set to shading status, and such displaying contents and background form light and shade contrast by printing opacity and shading, and human eye just can be observed.
4. a kind of Micro Energy Lose energy-saving displaying method according to claim 1, is characterized in that, places appropriate fluorescent material and absorb light when dark stroke after described LCDs, at bright stroke release light.
5. a kind of Micro Energy Lose energy-saving displaying method according to claim 3, is characterized in that, the LED that described LCDs is placed below or incandescent lamp, and when fluorescent material does not discharge, LED or incandescent lamp as bright source, or supplement light as fluorescence.
6. a kind of Micro Energy Lose energy-saving displaying method according to claim 1, it is characterized in that, described photoresistance can real-time monitor surrounding environment illumination intensity signal, according to the display mode of this signal deciding LCDs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351148.XA CN104143323B (en) | 2014-07-22 | 2014-07-22 | A kind of Micro Energy Lose energy-saving displaying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351148.XA CN104143323B (en) | 2014-07-22 | 2014-07-22 | A kind of Micro Energy Lose energy-saving displaying method |
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| Publication Number | Publication Date |
|---|---|
| CN104143323A CN104143323A (en) | 2014-11-12 |
| CN104143323B true CN104143323B (en) | 2016-04-20 |
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Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4819353B2 (en) * | 2004-12-20 | 2011-11-24 | Ｎｅｃディスプレイソリューションズ株式会社 | Display device |
| CN101751870A (en) * | 2008-12-03 | 2010-06-23 | 精联电子股份有限公司 | Delayed backlight adjusting method of portable electronic device |
| CN201387449Y (en) * | 2009-03-20 | 2010-01-20 | 威胜集团有限公司 | Automatic backlight circuit for electronic electric watt-hour meter |
| US9097832B2 (en) * | 2010-04-27 | 2015-08-04 | Xiao Lin Yu | Liquid crystal display (LCD) system and method |
| TWI416473B (en) * | 2011-04-08 | 2013-11-21 | Quanta Comp Inc | Multi-mode display device and power-saving method of the same |
| CN102591076A (en) * | 2012-03-06 | 2012-07-18 | 复旦大学 | Transflective LCD (liquid crystal display) with transmission-assisted reflection |
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