CN1784092A - Electro-optical device, drive method for the same and electronic apparatus - Google Patents
Electro-optical device, drive method for the same and electronic apparatus Download PDFInfo
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- CN1784092A CN1784092A CN 200510118725 CN200510118725A CN1784092A CN 1784092 A CN1784092 A CN 1784092A CN 200510118725 CN200510118725 CN 200510118725 CN 200510118725 A CN200510118725 A CN 200510118725A CN 1784092 A CN1784092 A CN 1784092A
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Abstract
The invention provides a luminous device, a driving method thereof and an electronic instrument. The light emitting device comprises a plurality of light emitting elements which emit light according to the quantity of light corresponding to the size of a driving signal; a temperature measuring unit used for measuring the ambient temperature of the plurality of light emitting elements; and a driving signal adjusting unit used for adjusting the size of the driving signal according to the measured temperature acquired by the temperature measuring unit.
Description
The application is to be on February 8th, 2003 applying date, and application number is 03104244.9, and denomination of invention is divided an application for " electro-optical device, its driving method and electronic instrument ".
Technical field
The present invention relates to a kind of light-emitting device and driving method thereof, electronic instrument.
Background technology
For example, for organic EL (electroluminescence) display unit, the luminosity of the organic EL device of its formation unit and the speed of comparing the timeliness deterioration of inorganic EL display unit are very fast.That is, fluorescent lifetime is long more, and brightness reduces just obvious more.Particularly, after inorganic EL display unit surpasses 100,000 hours life-span, almost do not observe the reduction of brightness.And organic EL display, for example, at 300cd/m
2Brightness use down, 10,000 hours is the limit.
At this, patent documentation 1 and patent documentation 2 described manufacture methods are improved.
(patent documentation 1: the spy opens flat 11-254596 communique)
(patent documentation 2: the spy opens flat 11-214257 communique)
Summary of the invention
(problem that invention will solve)
But,, prevent that fully brightness from reducing is difficult in fact from the improvement technological layer of manufacture method.The present invention will solve such problem.The purpose of invention is the improved approach by circuit engineering, provides a kind of brightness time dependent compensation technique.
(for solving the means of problem)
The 1st light-emitting device of the present invention comprises: a plurality of light-emitting components, and it is by sending light with the big or small corresponding light quantity of drive signal; Temperature measurement unit, the temperature shown in it is measured around the light-emitting component; With the drive signal adjustment unit, it adjusts the size of above-mentioned drive signal according to the temperature measuring result who is obtained by the said temperature determination unit.
The 2nd light-emitting device of the present invention comprises: a plurality of light-emitting components, and it is by sending light with the big or small corresponding light quantity of drive signal; Driver, it supplies with above-mentioned drive signal to above-mentioned light-emitting component; Control circuit, it supplies with the numerical data of the size of the above-mentioned drive signal of expression to above-mentioned driver; Temperature measurement unit, the temperature shown in it is measured around the light-emitting component; Adjustment of data unit, it proofreaies and correct above-mentioned numerical data according to the temperature measuring result who is obtained by the said temperature determination unit.
In addition, preferably further comprise memory cell, the temperature that its storage is measured by the said temperature determination unit.
The electronic instrument that the present invention relates to possesses above-mentioned light-emitting device.
The driving method of the 1st light-emitting device of the present invention, be used for the driven for emitting lights device, this light-emitting device comprises that wherein, above-mentioned driving method comprises: the first step of the temperature around the light-emitting component shown in the mensuration by sending a plurality of light-emitting components of light with the big or small corresponding light quantity of drive signal; With measurement result, adjust second step of the size of above-mentioned drive signal according to said temperature.
The driving method of the 2nd light-emitting device of the present invention is used for the driven for emitting lights device, and this light-emitting device comprises: a plurality of light-emitting components, and it is by sending light with the big or small corresponding light quantity of drive signal; Driver, it supplies with above-mentioned drive signal to above-mentioned light-emitting component; Wherein, above-mentioned driving method comprises: the first step of the temperature around the light-emitting component shown in the mensuration; With according in the temperature measuring result that above-mentioned first step obtained, proofread and correct the numerical data of the size of the above-mentioned drive signal of expression.
The 1st electro-optical device of the present invention, be to include the holding wire of most scan lines, majority and be included in the device that disposes the electrooptics device corresponding to the crossover location of above-mentioned each scan line and each holding wire, this electro-optical device moves according to the magnitude of current that provides to above-mentioned electrooptics device, it is characterized in that: the amount of drive current adjustment part that comprises the brightness test section that detects above-mentioned electrooptics device brightness, the described brightness of above-mentioned electrooptics device is proofreaied and correct and above-mentioned amount of drive current adjusted according to the brightness testing result that above-mentioned brightness test section obtains.
Again, above-mentioned amount of drive current provides the length of the time period of drive current to stipulate by above-mentioned driving current value with to above-mentioned electro-optical device.
The 2nd electro-optical device of the present invention, be to include most scan lines, most holding wire and include, it is characterized in that at device corresponding to the electrooptics device of the crossover location configuration of above-mentioned each scan line and each holding wire: include DA transducer that digital data converting is become simulation interior to above-mentioned electrooptics device provide analogue data driver, detect the brightness test section of above-mentioned electrooptics device brightness, reference voltage adjustment part that the brightness testing result that obtains according to above-mentioned brightness test section is adjusted the reference voltage of above-mentioned DA transducer.
The 3rd electro-optical device of the present invention, be to include most scan lines, most holding wire and be included in the device that disposes the electrooptics device corresponding to the crossover location of above-mentioned each scan line and each holding wire is characterized in that: comprise the driver that brightness data is provided to above-mentioned electrooptics device, provide control circuit to above-mentioned driver based on the above-mentioned brightness data of digitalized data, detect the brightness test section of described electrooptics device brightness, the data correction circuitry that the brightness testing result that obtains according to above-mentioned brightness test section is proofreaied and correct above-mentioned digitalized data.
The electro-optical device that liquid-crystal apparatus and el light emitting device etc. are common generally comprises R (red), G (green), three kinds of electrooptics devices of B (orchid).For such electro-optical device, above-mentioned electrooptics device has comprised R (red), G (green), three kinds of electrooptics devices of B (orchid), above-mentioned brightness test section carries out the detection of above-mentioned brightness respectively at above-mentioned three kinds of electrooptics devices, can adjust above-mentioned amount of drive current according to detected above-mentioned each brightness in above-mentioned amount of drive current adjustment part.
Use same light source to above-mentioned three kinds of luminous irradiations of electrooptics device, passing through by each self-corresponding look transformation component of above-mentioned three kinds of electrooptics devices, above-mentioned three kinds of electrooptics devices send respectively under the situation of color of R (red), G (green), B (orchid), above-mentioned brightness test section can detect the brightness of above-mentioned electrooptics device in the mode of the brightness that detects above-mentioned same light source; Certainly, above-mentioned brightness test section also can will detect the light by the above-mentioned look transformation component of above-mentioned three kinds of electrooptics devices, at least as the brightness of above-mentioned electrooptics device.
Again, preferably also possessing brightness detects and may judging part to judge that according to described brightness test section whether possible described brightness detect state.
In addition, preferably also according to the above-mentioned brightness of the detected above-mentioned electrooptics device of above-mentioned brightness test section, judge whether to detect with above-mentioned brightness test section the possible state of above-mentioned brightness.
In addition, the electronic instrument that the present invention relates to can be become by above-mentioned electro-optical device practical set.
The driving method of the 1st electro-optical device of the present invention is a kind of driving method of electro-optical device.This device comprises most scan lines, most holding wire and is included in electrooptics device corresponding to the crossover location configuration of above-mentioned each scan line and each holding wire, move according to the magnitude of current that provides to above-mentioned electrooptics device, this driving method is characterised in that: comprise the first step of the brightness that detects above-mentioned electrooptics device, with the testing result that described first step obtains, adjust second step of above-mentioned amount of drive current.
The driving method of the 2nd electro-optical device of the present invention is a kind of driving method of electro-optical device.This device comprises most scan lines, most holding wire and is included in electrooptics device corresponding to the crossover location configuration of above-mentioned each scan line and each holding wire, comprise with digital data converting become analog quantity the DA transducer provide the driver of analogue data to above-mentioned electrooptics device, this driving method is characterised in that: second step that the testing result of comprise the first step of the brightness that detects above-mentioned electrooptics device, obtaining according to above-mentioned first step is set the reference voltage of above-mentioned DA transducer.
The driving method of the 3rd electro-optical device of the present invention is a kind of driving method of electro-optical device.This device comprises most scan lines, most holding wire and is included in electrooptics device corresponding to the crossover location configuration of above-mentioned each scan line and each holding wire, provide brightness data by driver to above-mentioned electrooptics device, this driving method is characterised in that: second step that the testing result of comprise the first step of the brightness that detects above-mentioned electrooptics device, obtaining according to above-mentioned first step is proofreaied and correct above-mentioned numerical data.
In the described first step of the driving method of described electro-optical device, preferably detect described brightness respectively by R (red), G (green), B (orchid) three looks.
Again, can start earlier above-mentioned first step, whether prejudge that this brightness detects be possible state.
In addition, also can judge with above-mentioned brightness test section whether can detect above-mentioned brightness according to the above-mentioned brightness of detected above-mentioned electrooptics device.
In addition, in the present invention, color of pixel is not limited to R, G, B (red, green, orchid) three looks, and other color also can be used.
Further feature of the present invention will be illustrated in accompanying drawing and following narration.
Description of drawings
Fig. 1 is the figure of the relevant organic EL display of the present invention of expression,
(a) be whole control block diagram, (b) be the control block diagram of organic EL control circuit 30.
Fig. 2 is the flow chart that relevant organic EL display of the present invention carries out the sequential control of gamma correction.
Fig. 3 is the flow chart that relevant organic EL display of the present invention is carried out the sequential control of gamma correction.
Fig. 4 is at relevant organic display unit of the present invention, expression be the characteristic curve of the output voltage Eout of image data value and the luminance sensor corresponding with it.
Fig. 5 implements the block diagram that dynamic brightness is proofreaied and correct to relevant organic EL display of the present invention.
Fig. 6 is the figure of the relevant organic EL display of the present invention of expression,
(a) be whole control block diagram, (b) be the control block diagram of organic EL control circuit 30.
Fig. 7 is the schematic diagram of relevant organic EL display of the present invention,
(a) be whole control block diagram, (b) be the control block diagram of organic EL control circuit 30.
Fig. 8 is the stereogram of Collapsible mobile telephone 100 of a practical example of the explanation organic EL display that uses relevant embodiments of the invention.
Fig. 9 is the end view of mobile phone shown in Figure 8.
Figure 10 is the equivalent circuit diagram of shading detecting sensor 140 in the organic EL display of the relevant one embodiment of the present invention of explanation.
Figure 11 is the key diagram of an example of the portable personal computer of the expression electro-optical device that uses relevant one embodiment of the invention.
Figure 12 is the stereogram of an example of the explanation digital camera that the electro-optical device of relevant one embodiment of the invention is applied to view finder.
Symbol description
The 10-luminance sensor, 20-mould/number conversion circuit, the organic EL plate of 30-control circuit, 40-D/A switch circuit, the 50-driver, the organic EL plate of 60-, 30a- comparator 30a, 30b-brightness numerical table, 30c-output voltage numerical table, the 30d-selector, the 100-mobile phone, 110-Hinge mechanism (hinge part), the 120-luminance sensor, the organic EL plate of 130-, the 1100-personal computer, the 1102-keyboard, the 1104-main part, the 1106-display unit, the 1300-digital camera, the 1302-casing, the 1304-light receiving unit, the 1306-shutter, the 1308-circuit board, the 1312-video signal output terminal, 1314-data communication input and output terminal, the 1430-television indicator, the 1440-personal computer
Embodiment
An embodiment of the invention below are described.In the manner, electro-optical device has been to use the display unit (hereinafter to be referred as organic EL display) of organic electroluminescence device (hereinafter to be referred as organic EL device).To illustrate this device and driving method thereof.
Organic EL display is described at first, simply.The organic EL plate that constitutes organic EL display is well-known, is to be arranged with array way by the unit picture element that comprises organic EL device to form.The circuit of unit picture element constitutes and operation principle, for example, in the books of " electronic console " by name (this positive work of pine, ohm society of Co., Ltd. publishes the version distribution, puts down into distribution on June 20th, 8) description (mainly at 137 pages) is arranged.By providing drive current to the constituent parts pixel, in the analog memory that constitutes by two transistors and capacitor, write specific voltage, control the luminous of organic EL device.
In the execution mode that the present invention relates to, detect the brightness of the display panel of organic EL display by luminance sensor, according to testing result brightness is proofreaied and correct.
(the 1st embodiment)
Shown in Fig. 1 (a), in the present embodiment, the composition of organic EL display comprises, the luminance sensor 10 that constitutes by photodiode and CCD device, C-MOS device etc., ADC (mould/number conversion circuit) 20, organic EL plate control circuit 30, DAC (D/A switch circuit) 40, and the driver 50 and the organic EL plate 60 that comprise current generating circuit.Wherein current generating circuit is used to generate the data current corresponding to digitalized data.Organic EL plate control circuit 30 shown in Fig. 1 (b), is made of comparator 30a, brightness numerical table 30b, output voltage numerical table 30c and selector 30d.
Wherein, in luminance sensor 10, for fear of detecting organic EL plate 60 luminous light in addition, design has the unit of the shading of judging whether.The situation of relevant light shielding part will illustrate in the practical example of back.In addition, organic EL plate control circuit 30 is made of from hardware the circuit that possesses each function, perhaps utilizes computer by realizing various functions on the software.
In addition, resemble above-mentioned organic EL plate 60, can constitute by a plurality of organic EL devices of forming corresponding to the different luminescent layers of R (red), G (green), B (orchid); Also can constitute by a plurality of organic EL devices corresponding to the color conversion layer of R (red), G (green), B (orchid).Under latter event, the light that color conversion layer sends same white light source is transformed into R (red), G (green), B (orchid) look.
The at first whole action of explanation.The light that sends from organic EL plate 60 detects through luminance sensor 10, as testing result to ADC20 output voltage Eout.ADC20 converts output voltage to digital signal, outputs to organic EL plate control circuit 30 then.Be admitted to the comparator 30a of digital signal, with reference to the specific brightness numerical table 30b that stores in nonvolatile memory, whether more detected brightness and specific brightness meet.Can select corresponding among the brightness numerical table 30b of digitalized data h should with testing result Eout brightness data relatively.
Comparative result outputs among the selector 30d.Be transfused to the selector 30d of this comparative result,, export suitable reference voltage V ref, command value is exported to DAC40 according to the comparative result among the output voltage numerical table 30c.This is sets forth in detail in the back.DAC40 is corresponding to this command value, and the reference voltage V ref after proofreading and correct is outputed to DAC in the driver 50.Among the DAC of this reference voltage V ref in driver 50, when digitalized data h converts analog quantity to, play the reference voltage effect.Like this, according to testing result, proofread and correct the analogue data that offers organic EL plate 60.
Next, the concrete gimmick of gamma correction is described.As represent in order correctly to measure brightness, confirm shading state (S10) shown in the flow chart of Fig. 2 of adjustment order.Adjustment under the situation of shading (among the figure, adjusting) beginning (S10:YES → S20).Then, with reference to the output voltage numerical table 30b in above-mentioned Fig. 1 (b), determine to correspond respectively to R (Red, red), G (Green, green), B (Blue, orchid) reference voltage V ref of all kinds (S30～S80).
In addition, organic EL plate 60 under situation about being made of the organic EL device corresponding to the plural number of the color conversion layer of R (red), G (green), B (orchid), can be implemented the detection to same white light source brightness; Also can detect the brightness of at least a color among R (red), G (green), the B (orchid).
(the 2nd embodiment)
In the present embodiment, do not resemble and use the output voltage numerical table first embodiment, but measure brightness always, by correction reference voltage desired value is adjusted in brightness till.Thereby the integral body of present embodiment constitutes as Fig. 1 (a), and still organic EL plate control circuit 30 but is different from the formation of Fig. 1 (b), realizes that adjustment in proper order but be made of Programmable Logic Controller shown in Figure 3.In this, compare with first embodiment, circuit scale can reduce.In addition, be the same with above-mentioned first embodiment.Be that the center is illustrated below with the dissimilarity.
Particularly, as shown in Figure 3, whether confirm shading state (S10), under the situation of shading, adjust (among the figure, adjusting) beginning (S20).Then, determine the corresponding respectively reference voltage V ref of R (Red, red), G (Green, green), B (Blue, orchid) (S10～S120) in turn.At this moment, shown in the performance plot as shown in Figure 6, demonstration be the characteristic curve of the output voltage Eout of image data value and the luminance sensor corresponding with it.At each look, (EGtgt, EBtgt, ERtgt) is the center with desired value, adds that the target adjusting range has just determined both ideal relationships.By so desirable corresponding relation, set reference voltage V refR, the VrefG, the VrefB that adjust each look at each look suitable adjustment stepped voltage (Rstep, Gstep, Bstep).
At first, the gamma correction with red (Red) illustrates.As shown in Figure 3, if in the target adjusting range of output voltage ER (Eout) in Fig. 4 of luminance sensor (S50:YES), just carry out the gamma correction of other look; Otherwise (S50:NO), reference voltage V refR is adjusted.So-called this target adjusting range is exactly that luminance sensor output voltage ER is at 0.9 to 1.1 times of desired value ERtgt.Being lower than under the situation of this scope, on reference voltage V refR, add stepped voltage Rstep, make it near desired value by the brightness that improves reference voltage V ref control reduction.On the contrary, surpassing under the situation of this scope, deduct stepped voltage Rstep on reference voltage V refR, the brightness that exceeds by raising reference voltage V ref control makes it near desired value.Next, of all kinds at Green and Blue as shown in Figure 3, implement same control (S70～S120).
Above-mentioned a series of process for example, can be represented as shown in Figure 5.Both, the brightness testing result Eout of organic EL plate is transformed into digital value by ADC20, and initial value (for example, the digitalized data that detects the result of the acquiescence of dispatching from the factory) relatively, according to comparative result is that target is proofreaied and correct digitalized data with the desired value, converts the digitalized data after proofreading and correct to analog quantity by DAC40.This analog quantity is set for the reference voltage V ref of the DAC that driver 50 comprised.
If set the time period of suitable above-mentioned a succession of course of action, can be implemented in and carry out the dynamic brightness correction between the continuous operating period.
In above-mentioned example, the reference voltage V ref that the result adjusts the DAC that driver 50 comprised that detects according to brightness in addition, also can adjust or process driving voltage and data according to detecting the result.
For example, as shown in Figure 6, will detect as a result by ADC20 that Eout is transformed into digital signal, be input among the comparator 30a in organic EL plate control circuit.In comparator 30a, with reference to storage in nonvolatile memory etc. fixed brightness numerical table 30b, relatively detect brightness with respect to proofreading and correct preceding brightness and whether level off to appropriate value.This comparative result is outputed among the selector 30d.
In addition, be preferably in and preestablish digital signal when detecting,, this is detected as a result the data of correspondence (being primary data) be kept among the brightness numerical table 30b and primary data compares in input sensed luminance during this signal.
This comparative result is input among the selector 30d.Selector is selected suitable data from the data of driving voltage numerical table 30e, output among the DAC that is included in power circuit.The driving voltage Voel that provides to organic EL plate has been provided in the output of this DAC.
In addition, as shown in Figure 7, also can carry out processed to digitalized data according to detecting the result.In this case, will detect as a result by ADC20 that Eout is transformed into digital signal, be input among the comparator 30a in organic EL plate control circuit.In comparator 30a, with reference in nonvolatile memory, store fixed brightness numerical table 30b, relatively detect brightness with respect to the brightness before proofreading and correct and whether level off to appropriate value.This comparative result is outputed among the selector 30d.Comparative result outputs among the selector 30d, selects suitable data according to this output from the output numerical table, configures fiducial value in data correction circuitry 80.Digitalized data m after data correction circuitry 80 is proofreaied and correct is imported among the DAC that is included in driver 50, is transformed into analog quantity again, then this analogue data iout is offered organic EL plate.
The example that shows in Fig. 6 and Fig. 7 is equally applicable to the situation of dynamic brightness correction as shown in Figure 5.
In addition, because the luminous efficiency of organic EL device depends on ambient temperature, in this case, replace sensed luminance by measuring temperature, use above-mentioned same method, it also is possible that organic EL plate is carried out FEEDBACK CONTROL.
(the real dress example of electro-optical device of the present invention)
Below above-mentioned organic EL display will be described, be applicable to the example of Foldable cell phone and PDA information terminal.The stereogram of Foldable cell phone 100 as shown in Figure 8.In same figure, mobile phone 100 utilizes Hinge mechanism (hinge part) 110 can realize that two kinds are amounted to type, and what show among the figure is the state of opening.
As the configuration of luminance sensor 120, the structure of shielding makes folding back light from outside not go into to shine.Its position also has on the opposite of organic EL plate 130, and its position also middle position with the subtend part is relative.In addition, if (mobile phone) is built-in with this luminance sensor 120 of digital camera, also can doublely do light intensity sensor.
In addition, can correctly measure the luminosity of organic EL plate 130 in order to guarantee luminance sensor 120, shown in the side view of Fig. 9,, shading detecting sensor 140 (brightness detects the possibility detection unit) is arranged in the design of hinge 110 places as the detecting element of judging whether mobile phone is folded up.Shown in figure, an example as shading detecting sensor 140 has used the sheet spring.Lateral layout at organic EL plate 130 has projection 140a, and the lateral layout at luminance sensor 120 has sheet spring 140b simultaneously.Because such formation, the 140a of sheet spring 140b and projection contacts the output Continuity signal when folding mobile telephone 100.Like this, just can realize the affirmation of shading state in the foregoing description sequence of movement.The example of Figure 10 is the equivalent electric circuit of this shading detecting sensor 140.
In addition, at the shading status detection, not necessarily to resemble the new shading test section of design in the above-mentioned example, under non-show state, if the output of luminance sensor below certain threshold value, then just can be judged the shading state.In this case, need not newly design the shading detecting sensor, reduce parts and also reduce trouble, can make whole formation short and sweet.
In addition, luminance sensor is being under the unlimited state, is not only in order to carry out the single goal of luminance compensation because of the timeliness deterioration.In order to reject the influence of extraneous light, adjust the brightness of organic EL plate, also can be used as external light sensor.
In addition, for the present invention, color of pixel is not limited to R, G, B (red, green, orchid) three looks, also can be other color.
(other practical example)
Then, as an example of above-mentioned electronic installation, several examples that specifically organic EL display are applied to electronic instrument are described.At first, show that with organic EL relevant it is that example is illustrated that body is applied to portable personal computer with this execution mode.Figure 11 is the stereogram that this portable computer constitutes.In the figure, personal computer 1100 is made of the main body 1104 and the display unit 1106 that are equipped with keyboard 1102.This display unit 1106 is equipped with above-mentioned organic EL display.
In addition, Figure 12 is the stereogram of formation that expression is applied to above-mentioned organic EL display the digital camera of view finder.In addition, also express simply in the drawings and being connected of external equipment.Typical CCD camera makes light reaching the film after the Scenery Imaging; And logarithmic code camera 1300, Scenery Imaging is on CCD (Charge Coupled Device), by the opto-electronic conversion generation image pickup signal of picture pick-up device.At the back side of digital camera 1300 casings, design has above-mentioned organic EL display, is used to show the image pickup signal from CCD.Organic EL display shows scenery, plays the function and the effect of view finder.In addition, in the observation side (back side of figure) of casing 1302, design has and comprises optical lens and CCD etc. at interior light receiving unit 1304.
By organic EL display, shooting person confirms the scene image demonstrate, presses shutter 1306, and at this moment the image pickup signal of CCD is transferred in the internal memory of circuit board 1308 and is stored.In addition, in the side of the casing 1302 of this digital camera 1300, design has the input and output terminal 1314 that video signal output terminal 1312, data communication use etc.Like this, as shown in the figure, the former video signal output terminal 1312 and television indicator 1430, the latter's input and output terminal that is used for data communication 1314 and personal computer 1430 are connected to together.In addition, by specific operation, the image pickup signal that is stored in circuit board 1308 internal memories outputs in television indicator 1430 and the personal computer 1440.
In addition, the electronic instrument that organic EL display of the present invention was suitable for is not limited to the personal computer among Figure 11, the digital camera among Figure 12.Equally also be applicable to other, resemble video camera television set, band view finder, the band monitor, automobile navigation apparatus, beep-pager, electronic dictionary, calculator, typewriter, work station, video telephone, POS terminal, the instrument that uses touch-screen, intelligent robot, Dimmable lighting utensil, e-book or the like.So as the display part of various electronic instruments, the applicable field of above-mentioned organic EL display also has a lot.
(effect of invention)
By the amount of drive current that provides to the electrooptics device is provided, can carry out the variation of brightness Compensation. Particularly, can make brightness preservation certain, effectively restrain the color reduction of view data The deterioration of property.
Claims (6)
1, a kind of light-emitting device comprises:
A plurality of light-emitting components, it is by sending light with the big or small corresponding light quantity of drive signal;
Temperature measurement unit, the temperature shown in it is measured around the light-emitting component; With
The drive signal adjustment unit, it adjusts the size of described drive signal according to by the temperature measuring result that described temperature measurement unit obtained.
2, a kind of light-emitting device comprises:
A plurality of light-emitting components, it is by sending light with the big or small corresponding light quantity of drive signal;
Driver, it supplies with described drive signal to described light-emitting component;
Control circuit, it supplies with the numerical data of the size of the described drive signal of expression to described driver;
Temperature measurement unit, the temperature shown in it is measured around the light-emitting component;
Adjustment of data unit, it proofreaies and correct described numerical data according to by the temperature measuring result that described temperature measurement unit obtained.
3, light-emitting device according to claim 1 and 2 is characterized in that,
Further comprise memory cell, the temperature that its storage is measured by described temperature measurement unit.
4, a kind of electronic instrument, it possesses each described light-emitting device in the claim 1～3.
5, a kind of driving method of light-emitting device is used for the driven for emitting lights device, and this light-emitting device comprises that wherein, described driving method comprises by sending a plurality of light-emitting components of light with the big or small corresponding light quantity of drive signal:
The first step of the temperature around the light-emitting component shown in the mensuration; With
According to the measurement result of described temperature, adjust second step of the size of described drive signal.
6, a kind of driving method of light-emitting device is used for the driven for emitting lights device, and this light-emitting device comprises: a plurality of light-emitting components, and it is by sending light with the big or small corresponding light quantity of drive signal; Driver, it supplies with described drive signal to described light-emitting component; Wherein, described driving method comprises:
The first step of the temperature around the light-emitting component shown in the mensuration; With
According in the temperature measuring result that described first step obtained, proofread and correct the numerical data of the size of the described drive signal of expression.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002026130 | 2002-02-01 | ||
| JP2002026130 | 2002-02-01 | ||
| JP2003022024 | 2003-01-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB031042449A Division CN1231882C (en) | 2002-02-01 | 2003-02-08 | Electro-optical device, driving method thereof and electronic apparatus |
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| CN1784092A true CN1784092A (en) | 2006-06-07 |
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| CN 200510118725 Pending CN1784092A (en) | 2002-02-01 | 2003-02-08 | Electro-optical device, drive method for the same and electronic apparatus |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101739949B (en) * | 2008-11-07 | 2012-07-04 | 索尼株式会社 | Display device and electronic product |
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2003
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101739949B (en) * | 2008-11-07 | 2012-07-04 | 索尼株式会社 | Display device and electronic product |
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