CN104916253A - Driver for driving light emitting element, driving method and display - Google Patents
Driver for driving light emitting element, driving method and display Download PDFInfo
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- CN104916253A CN104916253A CN201410089159.5A CN201410089159A CN104916253A CN 104916253 A CN104916253 A CN 104916253A CN 201410089159 A CN201410089159 A CN 201410089159A CN 104916253 A CN104916253 A CN 104916253A
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Abstract
The invention provides a driver for driving a light emitting element, a driving method and a display. According to one embodiment of the invention, the driver for driving the light emitting device includes a data buffer and a phase-locked loop, wherein the data buffer is used for storing driving data required by driving the light emitting element, and the phase-locked loop is used for generating a second signal according to an input signal; the operation of the data buffer is controlled according to one of the input signal and the second signal, and the driving of the light emitting element is controlled according to one of the input signal and the second signal. According to the embodiment of the invention, requirements of the driver for external high-frequency signals can be lowered.
Description
Technical field
The invention relates to the Driving technique of display, espespecially a kind ofly reduce driver for the demand of external high frequency rate frequency signal and method, and related display.
Background technology
Along with being showing improvement or progress day by day of science and technology, the display technique that display adopts is constantly modified and innovation also, from early stage cathode-ray tube (CRT) (cathode ray tube), evolve to liquid crystal (liquid crystal) afterwards, electric slurry (plasma) or even light emitting diode (light emitting diode, the display technique such as LED), what the development of these display techniques was pursued is nothing but lower power consumption, better brightness, contrast or even color rendition degree.And in the middle of this, because light emitting diode has self luminous characteristic, so do not need by the auxiliary ability of extra backlight shinny, nor the problem of aperture opening ratio is had as lcd technology, therefore, in brightness and size, preferably advantage is had based on the light-emitting diode display designed by this display technique.
The Simple rack composition of known light-emitting diode display is illustrated in Fig. 1.As shown in the figure, light-emitting diode display 1 includes multiple LED11 ~ MN, driven respectively by LED driver 10 ~ M0, and then shinny.LED driver 10 ~ M0 provides electric current to each LED respectively, and controls to provide electric current to the time span of each LED, and along with the difference of time span, LED is presented different brightness.Because each LED corresponds to a kind of certain primary color (as: R, G or B), therefore by controlling to provide the time span of electric current, the intensity of different primary colors can be in harmonious proportion, and then make light-emitting diode display 1 be shown full-color picture.
For LED driver 10, it, according to the signal DIN of driving data input end DI including LED11 ~ LED1N, produces and provides electric current to the burst length of LED11 ~ LED1N.Because signal DIN adopts list type transmission, the driving data driving all LED11 ~ LEDMN is contained when controller 50 exports, so LED driver 10 is only by acquisition part position in signal DIN, carry out driving LED 11 ~ LED1N, and by output terminal DO, remaining position in signal DIN is transferred to next LED driver 20.Afterwards, LED driver 20 captures the part position of the driving data corresponding to LED21 ~ LED2N again from signal DIN, drives, so analogizes.
Please refer to Fig. 2, it is the simple and easy functional block diagram of the LED driver 10 in Fig. 1.As shown in the figure, LED driver 10 includes: driver element 12, offset buffer 13 and latch 14.Offset buffer 13 one by one position receives and stores the signal DIN provided by controller 50, and carry out shifting function according to the signal DCLK that controller 50 produces, finally, only retain the position of the driving data corresponding to LED11 ~ LED1N, and the driving data corresponding to other LED21 ~ LEDMN in signal DIN is sent out by output terminal DO position one by one by the mode of displacement.In general, signal DCLK is continuous print pulse train (frequency signal), data buffer 13, at the rising edge of each pulse or falling edge, will be arranged in buffer and move to right, thus send other position in signal DIN to offset buffer in LED driver 20 ~ M0.
When position stored in offset buffer 13 just in time corresponds to the driving data of LED11 ~ LED1N, controller 50 can send a signal LAT, requires that position stored in offset buffer 13 is latched by latch (latch) 14.Then, latch 14 sends these positions to driver element 12, makes driver element 12 carry out driving LED 11 ~ LED1N according to these positions.
Hypothesis-driver 12 is N number of pulse width modulation of 16 (pulse width Modulation, PWM) driver element, its function is to produce according to the PWM numerical value of 16 pulse width that average or summation equals 1 ~ 65535 (216-1) the individual unit interval.N number of 16 bit value (m=N x 16) in the position that driver element 12 can latch according to latch 14, carry out the brilliance control on 65536 rank respectively to each LED.16 bit value that driver element 12 meeting is corresponding according to each LED, determine the time span providing electric current, from 1 unit interval to the longest 65535 unit interval.Wherein, the signal GCLK that the length of unit interval is then produced by controller 50 decides.Be similar to signal DCLK, signal GCLK is also continuous print pulse train (frequency signal), driver element 12 according between the rising edge of continuous impulse in signal GCLK and rising edge or the time interval between falling edge and falling edge be used as a reference time, the physical length of a unit interval is determined with this, and the numerical value of corresponding for each LED 16 and unit interval are carried out modulation, determine to provide electric current to the time span of each LED.
But, among such framework, each LED driver, except the signal DIN exported from previous LED driver reception offset buffer, also from controller 50 Received signal strength GCLK, signal DCLK, signal LATCH, could must correctly drive each LED.Refresh rate to display improves, then the frequency of signal GCLK needs higher, so the demand of LED driver to outside radio-frequency signal (GCLK) can say it is necessary.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide a kind of based on phase-locked loop, uses foreign frequency to produce internal frequency, with this reduce to high-frequency signal demand for driving the driver of light-emitting component and driving method and related display.
For achieving the above object, the invention provides a kind of for driving the driver of light-emitting component, it comprises: a data buffer and a phase-locked loop.This data buffer is in order to the driving data needed for this light-emitting component of storage drive.This phase-locked loop is in order to produce a secondary signal according to an input signal.Wherein, the running of this data buffer be according to this input signal and this secondary signal one of them and controlled, and the driving of this light-emitting component is controlled according to the another one in this input signal and this secondary signal.
Another embodiment of the present invention provides a kind of in a driver, and drive the method for a light-emitting component, this driver includes a phase-locked loop.The method comprises: receive an input signal; And utilize this phase-locked loop, to produce a secondary signal according to this input signal.Wherein, the running of this data buffer be according to this input signal and this secondary signal one of them and controlled, and the driving of this light-emitting component is controlled according to the another one in this input signal and this secondary signal.
Another embodiment of the present invention provides a kind of display, and this display comprises: a plurality of light-emitting component, a plurality of driver and a controller.This plurality of driver is respectively coupled to this plurality of light-emitting component, and in order to drive this plurality of light-emitting component.This controller is in order to provide at least one input signal to this plurality of driver.Wherein, each driver comprises: a data buffer and a phase-locked loop.This data buffer is in order to the driving data needed for this light-emitting component of storage drive.This phase-locked loop produces a secondary signal in order to utilize one first signal, and wherein this first signal produced according to this input signal.Moreover, the running of this data buffer be according to this input signal and this secondary signal one of them and controlled, and the driving of this light-emitting component is controlled according to the another one in this input signal and this secondary signal.
The invention provides a kind of driver architecture to reduce the demand to high-frequency signal.Wherein, the present invention arranges phase-locked loop in driver, and based on the frequency signal (as DCLK) produced by peripheral control unit, produce another frequency signal (as GCLK) in inside, and then reduce the demand to outside high-frequency signal.Thus, also driver can be reduced in order to receive the quantity of the signal pin needed for external high frequency frequency signal, thus reduce manufacturing cost, the circuit complexity of display and alleviate the electromagnetic interference (EMI) (Electromagnetic Interference, EMI) caused when high-frequency signal transmits on circuit boards.
Accompanying drawing explanation
Fig. 1 is the Simple rack composition of known light-emitting diode display;
Fig. 2 is the simple and easy functional block diagram of the LED driver in the 1st figure;
Fig. 3 is the simple and easy functional block diagram of an embodiment of driver of the present invention;
Fig. 4 is the configuration diagram of an application mode of phase-locked loop of the present invention and coherent signal treating apparatus;
Fig. 5 is the simple and easy functional block diagram of another embodiment of driver of the present invention;
Fig. 6 is the configuration diagram of the Another Application mode of phase-locked loop of the present invention and coherent signal treating apparatus;
Fig. 7 be an embodiment of inventive display configuration diagram;
Fig. 8 is the process flow diagram of an embodiment of the inventive method.
Description of reference numerals
1,600 displays
LED11 ~ LEDMN light emitting diode
10 ~ M0,100 ~ M00,100 ' driver
50,500 controllers
12,120 driver elements
13,130 buffers
14,140 latchs
110 phase-locked loops
112,114 signal processing apparatus
610,620 steps.
Embodiment
Some vocabulary is employed to censure specific element in the middle of instructions.Person with usual knowledge in their respective areas should understand, and hardware manufacturer may call same element with different nouns.Instructions of the present invention and claims are not used as the mode of distinguish one element from another with the difference of title, but are used as the criterion of differentiation with element difference functionally." comprising " mentioned in the middle of instructions and claims is in the whole text an open term, therefore should be construed to " comprise but be not limited to ".In addition, " coupling " word at this is comprise directly any and be indirectly electrically connected means.Therefore, if describe a first device in literary composition to be coupled to one second device, then represent this first device and directly can be electrically connected in this second device, or be indirectly electrically connected to this second device by other device or connection means.
Fig. 3 illustrates the simple and easy functional block diagram of the embodiment of driver of the present invention.Compared to the known drive shown in Fig. 2, driver 100 of the present invention only from controller 500 Received signal strength DCLK, signal LATCH and signal DIN, and need or not Received signal strength GCLK, because this reducing the demand of external portion high-frequency signal.Phase-locked loop 110, driver element 120, data buffer 130 and latch 140 is included, in order to carry out driving LED 11 ~ LED1N according to signal DIN in driver 100.It should be noted, in accompanying drawing, the quantity of LED is only for explanation, but not invention restriction.For example, in other embodiments of the invention, the LED that driver 100 drives may arrange with the form of array, and such as, a LED array comprises the LED strip row of multiple parallel connection, and each LED strip row comprises the LED of multiple series connection.
Data buffer 130 receives the signal DIN provided by controller 500, and carry out shifting function according to the signal DCLK that controller 500 produces, each position one by one in Received signal strength DIN, and in stick signal DIN, correspond to the position of the driving data of LED11 ~ LED1N, and the driving data corresponding to the LED that other driver (not shown) drives in signal DIN is sent out.In one embodiment of the invention, data buffer 130 can be an offset buffer.But the restriction of this non-invention, any effect is suitable, and can partial content in stick signal DIN, all the other content delivery to be given the circuit of other driver, also belongs to enforcement category of the present invention.
When position stored in data buffer 130 just in time corresponds to the driving data of LED11 ~ LED1N, controller 500 can produce signal LAT to driver 100, and latched position stored in data buffer 130 by latch 140, thus send these positions to driver element 120.In the position that driver element 120 latches according to latch 140, correspond respectively to the place value of each LED, to the brilliance control that each LED carries out.And, according to the cycle of signal GCLK or the time interval between the rising edge of continuous impulse and rising edge or between falling edge and falling edge (namely, the frequency of signal GCLK) decide a reference time, and be used as with this reference time and provide electric current to the unit interval of LED, wherein the length of reference time may equal the length of unit interval, or has proportional relation.The final unit interval determined by further with each LED corresponding respectively place value carry out modulation, driver 100 can control to provide electric current to the time span of each LED whereby.
Among the present embodiment, signal GCLK is provided by phase-locked loop 110, and signal DCLK as a reference signal, is carried out phase locking operation to produce signal GCLK by phase-locked loop 110.By the suitable design (as: fractional-N PLL) of phase-locked loop 110, the frequency of the signal GCLK that phase-locked loop 110 can be allowed to produce is the integral multiple of signal DCLK, or non-integral multiple.Thus, although driver 100 is not from external control accepts signal GCLK, but by integral multiple or the non-integral multiple frequency scaling capability of phase-locked loop 110, the frequency of the signal GCLK of generation can be made to be enough to contain all possible frequency, to meet the demand of (such as refresh rate) in different application.This is because in different application, driver 100 may need the brilliance control providing different PWM exponent number, therefore provide electric current also can be different to the length of the unit interval of LED, by the non-integral multiple frequency scaling capability of phase-locked loop 110, driver 100 can decide the unit interval of multiple different length according to different demand.
In the embodiment shown in fig. 3, phase-locked loop 110 be directly according to controller 500 provide signal DCLK to produce signal GCLK, and signal GCLK is supplied to driver element 120 and carries out LED driving.But, in order to further improve the frequency coverage ability of phase-locked loop 110, in other embodiments of the invention, the frequency of signal DCLK also may be adjusted additionally by other signal processing apparatus (being generally the frequency eliminator of the power frequency elimination carrying out 2), and the signal after frequency being adjusted transfers to phase-locked loop 110 to produce signal GCLK, or adjust the frequency of the signal produced by phase-locked loop 110, again using the signal of (normally the power frequency elimination of 2) after frequency adjustment as signal GCLK, or above-mentioned both are parallel.The example shown in Fig. 4 is please refer to about such embodiment.In this embodiment, the input end of phase-locked loop 110 is coupled to the frequency that the first signal processing apparatus 112, first signal processing apparatus 112 first adjusts signal DCLK, produces the first signal CLK1.Then, the first signal CLK1 as with reference to signal, is carried out phase locking operation, and produces secondary signal CLK2 by phase-locked loop 110.Secondary signal treating apparatus 114 can adjust the frequency of secondary signal CLK2 further, produces signal GCLK.Although in above embodiment, utilize two signal processing apparatus 112 and 114 to process the signal inputing to phase-locked loop 110 simultaneously, and the signal to be exported by phase-locked loop 110, but the restriction of this non-invention, in other embodiments of the present invention, may only comprise the first signal processing apparatus 112 and secondary signal treating apparatus 114 one of them, and not both.
In addition, in an embodiment of the present invention, the first signal processing apparatus 112 and secondary signal treating apparatus 114 for the frequency eliminator (but unrestricted) of frequency elimination of power carrying out 2, may carry out frequency elimination to other input signal individual.Therefore, the signal shown in Fig. 4 may have following relation in frequency:
fCLK2 = (fDCLK / 2K )×Q；
fGCLK = fCLK2 / 2L；
fCLK2 = fCLK1×Q；
(wherein, K, L are positive integer, Q be more than or equal to 1 integer, or be greater than frequency that non-integer, the fCLK1 of 1 are signal CLK1, frequency that frequency that frequency that fCLK2 is signal CLK2, fDCLK are signal DCLK and fGCLK are signal GCLK).From above relation, under suitable Selecting parameter, auxiliary by the first signal processing apparatus 112 and/or secondary signal treating apparatus 114 of phase-locked loop 100 of the present invention, more various He Ne laser is provided, and more completely contain signal GCLK frequency required in different application, make driver 100 can control more accurately to drive the unit interval needed for light-emitting component.
In addition, although in the above description, phase-locked loop 110 or the first signal processing apparatus 112 are produce signal GCLK based on signal DCLK with secondary signal treating apparatus 114, but, among other embodiment of the present invention, also may produce signal DCLK with signal GCLK.Please refer to the embodiment shown in Fig. 5 and Fig. 6.In this embodiment, the phase-locked loop 110 in driver 100 ' is that the signal GCLK provided according to controller 500 produces signal DCLK.Now, the signal GCLK that driver element 120 provides based on controller 500 carries out LED driving, and data buffer 130 then receives the signal DCLK produced by phase-locked loop 110, carries out shifting function to signal DIN.Phase-locked loop 110 assisting also by extra signal processing apparatus, adjust the frequency of signal GCLK in advance, and the signal after frequency being adjusted transfers to phase-locked loop 110 to produce signal DCLK, or adjust the frequency of the signal produced by phase-locked loop 110, again using the signal of (normally the power frequency elimination of 2) after frequency adjustment as signal DCLK, or above-mentioned both are parallel.
As shown in Figure 6, in this embodiment, the frequency of signal will have following relation:
fCLK2 = (fGCLK / 2K )×Q；
fDCLK = fCLK2 / 2L；
fCLK2 = fCLK1×Q；
(wherein, K, L are positive integer, Q be greater than 1 or equal 1 integer, or be greater than frequency that non-integer, the fCLK1 of 1 are signal CLK1, frequency that frequency that frequency that fCLK2 is signal CLK2, fDCLK are signal DCLK and fGCLK are signal GCLK).
Fig. 7 illustrates with the driver 100 shown in Fig. 3 or Fig. 5, or the light-emitting diode display 600 realized based on driver 100 '.As shown in the figure, display 600 includes a plurality of light-emitting component LED11 ~ LEDMN, and driven by driver 100 ~ M00 respectively.Controller 500 in order to provide at least signal DIN, signal LAT and signal DCLK (or signal GCLK) to driver 100 ~ M00.In driver 100 ~ M00, the inside structure of each, may be same as the driver 100 shown in Fig. 3 or driver 100 '.Each driver at least comprises again: data buffer and phase-locked loop, thus drives LED11 ~ LEDMN respectively.Because the operation principles of each driver and details are in above-mentioned, therefore do not do describing of repeatability at this.It should be noted that LED quantity in accompanying drawing and number of drives are not the restrictions of inventive display.In addition, the kind of control signal that provides of controller 500 and quantity neither of the present inventionly limit.In other embodiments of the invention, controller 500 may also can provide extra control signal to carry out extra control to the operation of driver 100 ~ M00.
One embodiment of the invention provide a kind of in a driver, and to drive the method for a light-emitting component, this driver comprises a phase-locked loop, and the method comprises step 610 as shown in Figure 8 and step 620.In step 610, method of the present invention first can receive one first signal, the input signal that this first signal provides except can be this peripheral control unit, also may carry out frequency adjustment by this input signal provided this peripheral control unit and produce.In step 620, then utilize this phase-locked loop, to produce a secondary signal according to this first signal.Wherein, this phase-locked loop is using this first signal as a reference signal, and horizontal lock of going forward side by side operation produces this secondary signal.This first signal and this secondary signal one of them can be used for the running of the data buffer controlled in this driver, wherein, this data buffer is in order to the driving data needed for this light-emitting component of storage drive; Another one in this first signal and this secondary signal is then for determining the unit interval driven needed for this light-emitting component.In addition, when determining this unit interval, directly this unit interval can be decided according to the frequency of secondary signal; Or after adjusting the frequency of secondary signal by the adjustment of extra frequency, produce an output signal, and decide this unit interval by this output signal.Wherein, this first signal, with this secondary signal be pulse train/frequency signal.This first signal and this secondary signal one of them pulse rising edge or falling edge can be used to the shifting function triggering this data buffer, and the time interval between the rising edge of the continuous impulse of another one and rising edge or the time interval between falling edge and falling edge can be used as a reference time, this unit interval then may be identical with this reference time, or be proportional to this reference time.And the driving data of this unit interval finally and in data buffer carries out modulation, thus determine to provide electric current to the time of this light-emitting component.
Although note that in above explanation and drive LED for driver, and using LED as the display unit of in display, this not restriction of the present invention.In fact, driver of the present invention is also applicable to the light-emitting component of other type, and display of the present invention also may be used as display unit with the light-emitting component of other type, and such change also belongs to category of the present invention.
, be contained at least one embodiment of the present invention for special characteristic, structure or the characteristic described by this embodiment with above mentioned " embodiment " representative.Moreover " embodiment " that occur in different paragraph in literary composition not represents identical embodiment.Therefore, although when describing for different embodiment above, be referred to different architectural features or deemed-to-satisfy4 action respectively, it should be noted that these different characteristics are implemented in same particular implementation by suitable amendment simultaneously.
In sum, the present invention is by the application of phase-locked loop, significantly reduce the demand of driver to outside high-frequency signal, and different frequency Regulation mechanism is provided, effectively contain the frequency covering scope of signal, control the running of the data buffer in the driving of light-emitting component and driver exactly.
The foregoing is only preferred embodiment of the present invention, all equalizations done according to the claims in the present invention change and modify, and all should belong to covering scope of the present invention.
Claims (24)
1. for driving a driver for light-emitting component, it is characterized in that, it comprises:
One data buffer, in order to the driving data needed for this light-emitting component of storage drive; And
One phase-locked loop, in order to produce a secondary signal according to an input signal;
Wherein, the running of this data buffer be according to this input signal and this secondary signal one of them and controlled, and the driving of this light-emitting component is controlled according to the another one in this input signal and this secondary signal.
2. driver as claimed in claim 1, it is characterized in that, the frequency of this secondary signal is more than or equal to the frequency of this first signal.
3. driver as claimed in claim 1, is characterized in that, separately comprise:
One first signal processing apparatus, is coupled to an input end of this phase-locked loop, and the frequency in order to adjust this input signal produces one first signal, and this first signal is supplied to this phase-locked loop to produce this secondary signal.
4. driver as claimed in claim 3, it is characterized in that, this first signal processing device is set to a frequency eliminator, and the frequency of this first signal is point several times of the frequency of this input signal.
5. driver as claimed in claim 3, it is characterized in that, this input signal and secondary signal one of them for controlling a displacement operation of this data buffer, and the another one in this input signal and this secondary signal is for controlling the reference time driven needed for this light-emitting component.
6. driver as claimed in claim 1, is characterized in that, separately comprise:
One secondary signal treating apparatus, is coupled to an output terminal of this phase-locked loop, in order to adjust this phase-locked loop export the frequency of this secondary signal, produce an output signal.
7. driver as claimed in claim 6, it is characterized in that, this secondary signal treating apparatus is a frequency eliminator, and the frequency of this output signal is point several times of the frequency of this secondary signal.
8. driver as claimed in claim 6, it is characterized in that, this first signal and this output signal one of them for controlling a displacement operation of this data buffer, and the another one in this first signal and this output signal is for controlling the reference time driven needed for this light-emitting component.
9. one kind in a driver, and to drive the method for a light-emitting component, this driver comprises a phase-locked loop, it is characterized in that, the method comprises:
Receive an input signal; And
Utilize this phase-locked loop, to produce a secondary signal according to this input signal;
Wherein, the running of the data buffer in this driver be according to this input signal and this secondary signal one of them and controlled, and the driving of this light-emitting component is controlled according to the another one in this input signal and this secondary signal; This data buffer is in order to the driving data needed for this light-emitting component of storage drive.
10. method as claimed in claim 9, it is characterized in that, the frequency of this secondary signal is more than or equal to the frequency of this first signal.
11. methods as claimed in claim 9, is characterized in that, separately comprise:
The frequency adjusting this input signal produces one first signal.
12. methods as claimed in claim 11, it is characterized in that, the step adjusting this input signal comprises:
Carry out a frequency elimination operation to this input signal and produce this first signal, wherein the frequency of this first signal is point several times of the frequency of this input signal.
13. methods as claimed in claim 11, is characterized in that, separately comprise:
Utilize this input signal and this secondary signal one of them to control a displacement operation of this data buffer; And
The another one in this input signal and this secondary signal is utilized to control the reference time driven needed for this light-emitting component.
14. methods as claimed in claim 9, is characterized in that, separately comprise:
The frequency adjusting this secondary signal produces an output signal.
15. methods as claimed in claim 14, it is characterized in that, the step adjusting this secondary signal comprises:
Carry out a frequency elimination operation to this secondary signal and produce this output signal, wherein the frequency of this output signal is point several times of the frequency of this secondary signal.
16. methods as claimed in claim 14, is characterized in that, separately comprise:
Utilize this first signal and this output signal one of them to control a displacement operation of this data buffer; And
The another one in this first signal and this output signal is utilized to control the reference time driven needed for this light-emitting component.
17. 1 kinds of displays, is characterized in that, comprise:
A plurality of light-emitting component;
A plurality of driver, is respectively coupled to this plurality of light-emitting component, in order to drive this plurality of light-emitting component; And
One controller, in order to provide at least one input signal to this plurality of driver;
Wherein, each driver comprises:
One data buffer, in order to the driving data needed for this light-emitting component of storage drive; And
One phase-locked loop, in order to utilize one first signal to produce a secondary signal, wherein this first signal system produced according to this input signal;
Wherein, the running of this data buffer be according to this input signal and this secondary signal one of them and controlled, and the driving of this light-emitting component is controlled according to the another one in this input signal and this secondary signal.
18. displays as claimed in claim 17, is characterized in that, the frequency of this secondary signal is more than or equal to the integral multiple or non-integral multiple of the frequency of this first signal.
19. displays as claimed in claim 17, it is characterized in that, each driver separately comprises:
One first signal processing apparatus, is coupled to an input end of this phase-locked loop, in order to adjust the frequency of this input signal to produce this first signal, and this first signal is supplied to this phase-locked loop to produce this secondary signal.
20. displays as claimed in claim 19, it is characterized in that, this first signal processing device is set to a frequency eliminator, and the frequency of this first signal is point several times of the frequency of this input signal.
21. displays as claimed in claim 19, it is characterized in that, this input signal and this secondary signal one of them be used for controlling a displacement operation of this data buffer, and the another one in this input signal and this secondary signal is used for reference time of controlling to drive needed for this light-emitting component.
22. display as claimed in claim 17, it is characterized in that, this input signal is as this first signal, and this phase-locked loop utilizes this first signal to produce this secondary signal, and wherein each driver separately comprises:
One secondary signal treating apparatus, is coupled to an output terminal of this phase-locked loop, in order to adjust this phase-locked loop produce the frequency of this secondary signal, produce an output signal.
23. displays as claimed in claim 22, it is characterized in that, this secondary signal treating apparatus is a frequency eliminator, and the frequency of this output signal is point several times of the frequency of this secondary signal.
24. displays as claimed in claim 22, it is characterized in that, this first signal and this output signal one of them be used for controlling a displacement operation of this data buffer, and the another one in this first signal and this output signal is used for reference time of controlling to drive needed for this light-emitting component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089159.5A CN104916253A (en) | 2014-03-12 | 2014-03-12 | Driver for driving light emitting element, driving method and display |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410089159.5A CN104916253A (en) | 2014-03-12 | 2014-03-12 | Driver for driving light emitting element, driving method and display |
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| CN104916253A true CN104916253A (en) | 2015-09-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109410837A (en) * | 2018-12-17 | 2019-03-01 | 深圳市华星光电半导体显示技术有限公司 | A kind of OLED driving chip and its driving method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109410837A (en) * | 2018-12-17 | 2019-03-01 | 深圳市华星光电半导体显示技术有限公司 | A kind of OLED driving chip and its driving method |
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