TWI737072B - Driving device of display pixel and driving method thereof - Google Patents

Abstract

A driving device of display pixel and a driving method thereof are provided. The driving method includes: lighting on a first light emitting component and a second light emitting component during a first light emitting time period of each of a plurality of first time periods; and lighting on the first light component and a third light emitting component during a second light emitting time period of each of a plurality of second time periods, wherein wavelengths of emitted lights of the first light emitting component, the second light emitting component, and the third light emitting component are different.

Description

Display pixel driving device and driving method

The present invention relates to a driving device and driving method of display pixels, and more particularly to a driving device and driving method of display pixels of an impulse display device.

In the conventional pulsed display device, a short-time laser time drive is often used to provide current to light up the light-emitting diode. As the pixel density on the panel increases, the driving method of the conventional technology increases the possibility of flickering of the display screen due to the increase of the driving time. The conventional technology overcomes the above-mentioned problems by increasing the scanning frequency, but this approach greatly increases the power consumption of the circuit.

In addition, the conventional technology provides a corresponding driving circuit for each light-emitting diode for driving. Such an approach requires a relatively high area to lay out the driving circuit and limits the layout density of display pixels. Under the premise that the layout density of display pixels cannot be increased, the possibility of flickering of the display screen is also increased.

The invention provides a variety of driving devices and driving methods for display pixels, which can effectively reduce the phenomenon of display flicker.

The driving method of the display pixel of the present invention is applicable to a pulsed display device, and includes: lighting a first light-emitting element and a second light-emitting element in a first laser time interval in each of a plurality of first time intervals; and The second laser time interval in each of the second time intervals turns on the first light-emitting element and the third light-emitting element, wherein the wavelengths of light emitted by the first light-emitting element, the second light-emitting element, and the third light-emitting element are different .

The driving device for display pixels of the present invention is suitable for an impulse type display device. The driving device includes a first driving circuit, a second driving circuit, and an output selection circuit. The first driving circuit receives the first pixel data, and generates a first driving signal to drive the first light-emitting element according to the first pixel data. The second driving circuit receives the selected pixel data, and generates a second driving signal according to the selected pixel data. The output selection circuit is coupled to the second driving circuit, receives the selection signal, and causes the second driving circuit to provide the second driving signal to drive the second light-emitting element or the third light-emitting element according to the selection signal. Wherein, the wavelengths of light emitted by the first light-emitting element, the second light-emitting element, and the third light-emitting element are different.

Another display pixel driving device of the present invention is suitable for an impulse display device. The driving device includes a driving circuit and an output selection circuit. The driving circuit receives the selected pixel data and generates a driving signal according to the selected pixel data. The output selection circuit is coupled to the driving circuit. The output selection circuit receives the selection signal, and makes the driving circuit provide a driving signal to drive the first light-emitting element, the second light-emitting element, or the first light-emitting element according to the selection signal. Three light-emitting elements.

Based on the above, the driving device for display pixels of the present invention can drive multiple light-emitting elements to emit light in the same time interval, thereby effectively increasing the intensity of brightness and reducing the flicker phenomenon generated by the display device. Moreover, by integrating the driving circuits for driving a plurality of light-emitting elements into an integrated layout, the layout density of the light-emitting elements in the display device can also be increased, and the flicker phenomenon generated by the display device can also be reduced.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

S110, S120: steps

TD1, TD2: time interval

t11, t21: initialization time interval

t12, t22: reset time zone

t13, t23: laser time interval

301, 302: drive device

310, 320, 510, 520, 810: drive circuit

330, 530, 820: output selection circuit

340, 540: Laser control switch

400: Pixel data selection circuit

511, 521: Drive

512, 522: Compensator

C51, C52: storage capacitor

G[n]: scan signal

G[n-1]: pre-scan signal

EM: Laser control signal

DATA1, DATAR, DATAB: pixel data

DATA2: selected pixel data

VDD: power supply voltage

VSS, DC: Reference voltage

DV1, DV2, DV: drive signal

LE1~LE3, LE11~LE33: Light-emitting element

SEL: select signal

SEL1, SEL2, SEL3: select sub-signals

M1~M716, M7A, M7B, M7C: Transistor

G: Green light

B: Blu-ray

R: Red light

C71~C74: Capacitance

SWEEP, GG-RES, GG-VTH: signal

T91~T1030: Laser time interval

FIG. 1 shows a flowchart of a method for driving display pixels according to an embodiment of the present invention

FIG. 2 shows a timing diagram of a driving method of display pixels according to an embodiment of the present invention.

FIG. 3A is a schematic diagram of a driving device for display pixels according to an embodiment of the present invention.

FIG. 3B is a schematic diagram of a driving device for display pixels according to another embodiment of the present invention.

FIG. 4 is a schematic diagram of an embodiment of a pixel data selection circuit.

FIG. 5 is a schematic circuit diagram of a driving device according to an embodiment of the present invention.

FIG. 6 is a timing diagram of the operation of the light-emitting device according to the embodiment of the present invention.

FIG. 7 is a schematic circuit diagram of a driving device according to another embodiment of the present invention.

FIG. 8 is a schematic diagram of a driving device according to another embodiment of the present invention.

FIG. 9 is a driving timing diagram of the light-emitting element in the embodiment of FIG. 8 of the present invention.

FIG. 10 is another driving timing diagram of the light-emitting element in the embodiment of FIG. 8 of the present invention.

Please refer to FIG. 1. FIG. 1 is a flowchart of a driving method of a display pixel according to an embodiment of the present invention. Among them, the flow of the driving method in FIG. 1 is applicable to an impulse display device. Wherein, in step S110, the first light-emitting element and the second light-emitting element are turned on in the first laser time interval in each of the plurality of first time intervals, and in step S120, in the first laser time interval of the plurality of second time intervals The second laser time interval in each illuminates the first light-emitting element and the third light-emitting element. Here, the first light-emitting element, the second light-emitting element, and the third light-emitting element may constitute one display pixel. The first light-emitting element, the second light-emitting element, and the third light-emitting element may emit light of different wavelengths. For example, the first light-emitting element may be a green light-emitting diode, the second light-emitting element may be a red light-emitting diode, and the third light-emitting element may be a blue light-emitting diode.

In addition, each of the above-mentioned first time intervals and each of the second time intervals are arranged in a staggered manner on the time axis. It is worth noting that in the embodiment of the present invention, by illuminating two light-emitting elements in a single laser time interval, the total amount of display pixels provided in a single laser time interval can be increased, and the pulsed display can be effectively reduced. The flickering phenomenon of the overall picture displayed by the device.

Please refer to FIG. 2 below. FIG. 2 illustrates a timing diagram of a driving method of a display pixel according to an embodiment of the present invention. Wherein, the first time interval TD1 has a first initialization time interval t11, a first reset time zone t12, and a first laser time zone arranged in sequence. Between t13. The second time interval TD2 has a second initialization time interval t21, a second reset time interval t22, and a second laser time interval t23 arranged in sequence.

In this embodiment, the second time interval TD2 is arranged after the first time interval TD1. Moreover, in the first laser time interval t13, this embodiment can drive the first light-emitting element and the second light-emitting element to emit light at the same time, and in the second laser time interval t23, this embodiment can drive the first light-emitting element and the third light-emitting element to emit light. The light-emitting elements emit light at the same time. In this way, by increasing the brightness generated in the first laser time interval t13, the brightness generated in the second reset time interval t22 can be attenuated, so as not to cause excessive flicker to human vision and improve the display quality.

Incidentally, since human eyes are more sensitive to green light, in the embodiment of the present invention, the first light-emitting element, which is a green light-emitting diode, can be used in both the first laser time interval t13 and the second laser time interval t23. Is lit. Of course, in other embodiments of the present invention, the designer can change the color of the emitted light of the first light-emitting element, the second light-emitting element, and the third light-emitting element according to product requirements, and there is no fixed limit.

Please refer to FIG. 3A below. FIG. 3A is a schematic diagram of a driving device for display pixels according to an embodiment of the present invention. The driving device 301 is suitable for an impulse display device, and includes driving circuits 310 and 320 and an output selection circuit 330. The driving circuit 310 receives the pixel data DATA1, and generates a driving signal DV1 according to the pixel data DATA1 to drive the first light emitting element LE1. The driving circuit 320 receives the selected pixel data DATA2, and generates a driving signal DV2 according to the selected pixel data DATA2. The output selection circuit 330 is coupled to the driving circuit 320. The output selection circuit 330 receives the selection signal SEL, according to the selection signal SEL to enable the driving circuit 320 to provide a driving signal DV2 to drive the second light-emitting element LE2 or the third light-emitting element LE3.

In detail, the driving circuits 310 and 320 receive the power supply voltage VDD as the operating power supply. The driving circuit 310 further receives the scanning signal G[n], the previous scanning signal G[n-1], and the laser control signal EM. And corresponding to the time interval when the scan signal G[n] is enabled, the driving signal DV1 is generated according to the pixel data DATA1 to drive the first light-emitting element LE1 and make the first light-emitting element LE1 emit light. The driving circuit 320 receives the scan signal G[n] and the previous scan signal G[n-1]. And corresponding to the time interval when the scan signal G[n] is enabled, the driving signal DV2 is generated according to the selected pixel data DATA2. Correspondingly, the output selection circuit 330 transmits the driving signal DV2 to the second light-emitting element LE2 or the third light-emitting element LE3 according to the selection signal SEL, and makes the second light-emitting element LE2 and the third light-emitting element LE3 time-sharing Order luminescence.

In addition, the first light-emitting element, the second light-emitting element, and the third light-emitting elements LE1, LE2, and LE3 are all light-emitting diodes. The cathodes of the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 are commonly coupled to the reference voltage terminal VSS (for example, the ground terminal), the anode of the first light-emitting element LE1 receives the driving signal DV1, and the second light-emitting element The anodes of LE2 and the third light-emitting element LE3 receive the driving signal DV2 in a time-sharing manner.

Specifically, when in a first laser time interval of the first time interval, the first light emitting element LE1 can receive the driving signal DV1 to generate emitted light. At the same time, the second light emitting element LE2 receives the driving signal DV2 to generate emission light. When in a second laser time interval in the second time interval, the first light-emitting element LE1 is connected to The driving signal DV1 is received to generate emission light. At the same time, the third light emitting element LE3 receives the driving signal DV2 to generate emission light.

It is worth mentioning that in the embodiment of the present invention, in any laser time interval, a single display pixel can provide two light-emitting elements to generate emitted light. Effectively enhance the brightness, and effectively reduce the flicker that may occur in the display device. In addition, three light-emitting elements (first, second, and third light-emitting elements LE1, LE2, LE3) can be driven through two driving circuits 310 and 320, effectively reducing the size of the driving circuit, increasing the layout density of the display device, and Can reduce the degree of flicker.

Next, please refer to FIG. 3B. FIG. 3B is a schematic diagram of a driving device for display pixels according to another embodiment of the present invention. The driving device 302 is suitable for an impulse display device, and includes driving circuits 310 and 320, an output selection circuit 330, and a laser control switch 340. Different from the previous embodiment, the laser control switch 340 is coupled between the driving circuit 310 and the first light emitting element LE1. The laser control switch 340 determines whether to provide a driving signal DV1 to drive the first light emitting element LE1 according to the laser control signal EM.

Regarding the method of generating the selected pixel data DATA2, the driving device in the embodiment of the present invention further includes a pixel data selection circuit. Please refer to the schematic diagram of the implementation of the pixel data selection circuit shown in FIG. 4. The pixel data selection circuit 400 includes two switches constructed by transistors M1 and M2. The transistor M1 is controlled by the first selector signal SEL1 to be turned on or off, and the transistor M2 is controlled by the second selector signal SEL2 to be turned on or off. The first ends of the transistor M1 and the transistor M2 respectively receive the pixel data DATAR and DATAB, and the second ends of the transistor M1 and the transistor M2 jointly generate the selected pixel data DATA2.

In terms of operation details, taking the embodiment of FIG. 3A as an example, the data selection operation of the pixel data selection circuit 400 corresponds to the selection operation of the drive signal DV2 performed by the output selection circuit 330. When the transistor M1 is turned on (the transistor M2 is turned off), the pixel data selection circuit 400 selects the pixel data DATAR as the selected data DATA2. At this time, the output selection circuit 330 provides a driving signal DV2 to drive the second light-emitting element LE2. In addition, when the transistor M2 is turned on (the transistor M1 is turned off), the pixel data selection circuit 400 selects the pixel data DATAB as the selected data DATA2. At this time, the output selection circuit 330 provides a driving signal DV2 to drive the third light-emitting element LE3.

In the above example, the pixel data DATAR corresponds to the red grayscale value of the pixel, the pixel data DATAB corresponds to the blue grayscale value of the pixel, the second light-emitting diode LE2 is a red light-emitting diode, and the third The light-emitting diode LE3 is a blue light-emitting diode. In addition, the pixel data DATA1 may correspond to the green gray scale value of the pixel, and the first light emitting diode LE1 may be a green light emitting diode.

Please refer to FIG. 5 below. FIG. 5 is a schematic circuit diagram of a driving device according to an embodiment of the present invention. The driving device 500 includes driving circuits 510 and 520, an output selection circuit 530, and a laser control switch 540. The driving circuit 510 includes a driver 511, a reset switch set by the transistor M55, a laser switch set by the transistor M52, a data input switch set by the transistor M51, a compensator 512, and a storage capacitor C51. Among them, the driver 511 and the compensator 512 are constructed by transistors M53 and M54, respectively.

The first end of the transistor M53 receives the power supply voltage through the transistor M52 VDD, the control end of the transistor M53 is coupled to one end of the storage capacitor C51 to receive the control bias. The second end of the transistor M53 is coupled to the laser control switch 540. The other end of the storage capacitor C51 receives the power supply voltage VDD.

The transistor M54 as the compensator 512 is coupled between the second terminal of the transistor M53 and the control terminal to compensate for the variation of the conduction voltage of the transistor M53. The first terminal of the transistor M52 receives the power supply voltage VDD, the second terminal of the transistor M52 is coupled to the first terminal of the transistor M53, and the control terminal of the transistor M52 receives the laser control signal EM.

In addition, the transistor M55 is coupled between the reference voltage DC and the control terminal of the transistor M53. The control terminal of the transistor M55 receives the previous scan signal G[n-1], and adjusts the control bias during the reset time interval so that the control bias is equal to the reference voltage DC. One end of the transistor M51 as a data input switch receives the pixel data DATA1, and is turned on according to the scan signal G[n] during the data writing time interval, so that the pixel data DATA1 is written to the storage capacitor C51.

On the other hand, the driving circuit 520 includes a driver 521, a reset switch set by the transistor M511, a laser switch set by the transistor M58, a data input switch set by the transistor M57, a compensator 522, and a storage capacitor C52. Among them, the driver 521 and the compensator 522 are constructed by transistors M59 and M510, respectively.

In this embodiment, the driving circuit 520 has substantially the same circuit structure as the driving circuit 510, and the details are not repeated here.

The output selection circuit 530 includes two switches constructed by transistors M512 and M513. Transistor M512 is coupled to the second end of transistor M59 and the second transmitter Between the light elements LE2, it is controlled by the first selector signal SEL1. The transistor M513 is coupled between the second end of the transistor M59 and the third light-emitting element LE3, and is controlled by the second selector signal SEL2.

The laser control switch 540 is constructed by a transistor M56. The transistor M56 is coupled between the transistor M53 and the first light emitting element LE1. The transistor M56 is controlled by the laser control signal EM.

In operation, taking the driving circuit 510 as an example, during the reset time interval, the transistor M55 is turned on, and the transistors M51, M52, and M54 are all turned off. At the same time, the first light emitting element LE1 does not generate emitted light. In addition, in the laser time interval, the transistors M52, M53, and M56 are turned on, and the transistors M51, M54, and M55 are turned off. At this time, the transistor M53 provides a driving signal, and the transistor M56 drives the first light-emitting element LE1 to generate emission light. At the same time, in the driving circuit 520, the transistors M58 and M59 are turned on. At this time, the transistor M59 provides a driving signal, and one of the transistors M512 and M513 is used to drive the second light-emitting element LE2 or the third light-emitting element LE3.

In this embodiment, the driving circuits 510 and 520 are both 5T1C (5 transistors and 1 capacitor) circuit architecture.

Please refer to FIG. 6. FIG. 6 is a timing diagram of the operation of the light-emitting device according to the embodiment of the present invention. Corresponding to the embodiment of FIG. 5, different laser time intervals can be defined according to the laser control signal EM. In the first laser time interval, the laser control signal EM is pulled down to a low voltage level (enabled). According to the pulled down first selector signal SEL1, the driving device 500 can drive the light-emitting elements LE1, LE2 Send green light G separately And red light R. In the second laser time interval, the laser control signal EM is pulled down to the low voltage level again. According to the pulled down second selector signal SEL2, the driving device 500 can drive the light emitting elements LE1 and LE3 to send green light respectively G and Blu-ray B.

Please refer to FIG. 7 below. FIG. 7 is a schematic circuit diagram of a driving device according to another embodiment of the present invention. The driving device 700 includes driving circuits 710 and 720, an output selection circuit 730, and a laser control switch 740. In this embodiment, the driving circuit 710 is composed of transistors M71 to M78 and capacitors C71 and C72, and the driving circuit 720 is composed of transistors M79 to M716 and capacitors C73 and C74. In this embodiment, the driving circuit 710 and the driving circuit 720 have a circuit structure of 8T2C (8 transistors and 2 capacitors). Among them, the transistors M78 and M715 receive the signal SWEEP and are controlled by the signal GG-RES. The transistors M73 and M710 are controlled by the scanning signal G1[n], and respectively receive the pixel data DATA1 and the selected pixel data DATA2. Transistors M76 and M713 are used as drivers and generate different driving signals respectively. Transistors M75 and M78 are controlled by signals GG-VTH and GG-RES, respectively, and transistors M712 and M715 are also controlled by signals GG-VTH and GG-RES, respectively. Transistors M77 and M714 are also controlled by the scan signal G2[n].

On the other hand, the output selection circuit 730 is composed of transistors M7B and M7C. The laser control switch 740 is composed of a transistor M7A.

According to this embodiment and the embodiment of FIG. 5 of the present invention, it can be known that in the driving device of the embodiment of the present invention, the driving circuit can be implemented by different circuit architectures. The circuit diagrams in Figs. 5 and 7 are only examples for illustration. In addition, by the way, in the embodiments of FIGS. 5 and 7, the circuit structure of the driving circuit in the same driving device can also be not the same.

Please refer to FIG. 8. FIG. 8 is a schematic diagram of a driving device according to another embodiment of the present invention. The driving device 800 includes a driving circuit 810 and an output selection circuit 820. The driving circuit 810 is coupled to the output selection circuit 820. The driving circuit 810 receives the selected pixel data DATA, and generates a driving signal DV according to the selected pixel data DATA. The output selection circuit 820 receives the selection signal including the selection sub-signals SEL1, SEL2, SLE3, and according to the selection sub-signals SEL1, SEL2, SLE3, the driving circuit 810 provides a driving signal DV to drive the first light-emitting element LE1, the second light-emitting element LE2, or The third light-emitting element LE3.

In this embodiment, the driving circuit 810 can be constructed using any one of the driving circuits in the aforementioned embodiments of FIGS. 5 and 7. Taking the driving circuit 510 as an example, the driving circuit 810 can receive the scanning signal G[n], the previous scanning signal G[n-1] and the laser control signal EM, and generate the driving signal DV according to the selected pixel data DATA.

The output selection circuit 820 may include a plurality of switches, and transmit the driving signal DV to the first light-emitting element LE1, the second light-emitting element LE2 and the One of the three light-emitting elements LE3.

It is worth noting here that the output selection circuit 820 can sequentially transmit the driving signal DV to the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 in a plurality of laser time intervals. And the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 sequentially generate emission lights of different wavelengths in different laser time intervals.

In addition, the source of the selected pixel data DATA can be adjusted according to the selection action of the output selection circuit 820. Take the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 as a green light-emitting diode, a red light-emitting diode, and a blue light-emitting diode as an example. Corresponding to the first light-emitting element LE1, the second light-emitting element LE2, and the third light-emitting element LE3 that are sequentially driven, the selected pixel data DATA can be the green grayscale value of the pixel, the red grayscale value of the pixel, and The blue grayscale value of the pixel.

Hereinafter, please refer to FIG. 9. FIG. 9 illustrates a driving timing diagram of the light-emitting element according to the embodiment of FIG. 8 of the present invention. In FIG. 9, the driving device includes a plurality of driving circuits and a plurality of corresponding output selection circuits, wherein each group of driving circuits and output selection circuits is used to drive three light-emitting elements. For example, the light-emitting elements LE11, LE12, and LE13 are coupled to the same first driving circuit; the light-emitting elements LE21, LE22, and LE23 are coupled to the same second driving circuit. In addition, the light-emitting elements LE11 and LE21 constitute a first pixel; the light-emitting elements LE12 and LE22 constitute a second pixel; and the light-emitting elements LE13 and LE23 constitute a third pixel.

In the first laser time interval T91, the first driving circuit and the second driving circuit simultaneously cause the light emitting elements LE11 and LE21 to emit light; in the second laser time interval T92, the first driving circuit and the second driving circuit simultaneously emit light The elements LE12 and LE22 generate emission light; and, in the third laser time interval T93, the first drive circuit and the second drive circuit simultaneously cause the light-emitting elements LE13 and LE23 to generate emission light. That is to say, in the embodiment of the present invention, in the same laser time interval, there are two light-emitting elements that generate emitted light, which can improve the output in the same laser time interval. The raw emission brightness reduces the possibility of flickering of the display screen.

Incidentally, in this embodiment, the light-emitting elements LE11 and LE23 are red light-emitting diodes; the light-emitting elements LE12 and LE21 are green light-emitting diodes; and the light-emitting elements LE13 and LE22 are blue light-emitting diodes.

Please refer to FIG. 10 below. FIG. 10 illustrates another driving timing diagram of the light-emitting element according to the embodiment of FIG. 8 of the present invention. In FIG. 10, the driving device includes a plurality of driving circuits and a plurality of corresponding output selection circuits, wherein each group of driving circuits and output selection circuits is used to drive three light-emitting elements. For example, the light-emitting elements LE11, LE12, and LE13 are coupled to the same first driving circuit; the light-emitting elements LE21, LE22, and LE23 are coupled to the same second driving circuit; the light-emitting elements LE31, LE32, and LE33 are coupled to the same The third drive circuit. In addition, the light-emitting elements LE11, LE21, and L31 constitute a first pixel; the light-emitting elements LE12, LE22, and L32 constitute a second pixel; and the light-emitting elements LE13, LE23, L33 constitute a third pixel.

In the first laser time interval T1010, the first driving circuit, the second driving circuit, and the third driving circuit simultaneously cause the light emitting elements LE11, LE21, and L31 to emit light; in the second laser time interval T1020, the first driving circuit, The second driving circuit and the third driving circuit simultaneously cause the light emitting elements LE12, LE22, and L32 to emit light; and, in the third laser time interval T1030, the first driving circuit, the second driving circuit, and the third driving circuit simultaneously emit light The elements LE13, LE23, and L33 generate emitted light. That is to say, in the embodiment of the present invention, in the same laser time interval, all three light-emitting elements generate emitted light, which can increase the brightness of the emitted light generated in the same laser time interval and reduce the possibility of display screen flicker.

Incidentally, in this embodiment, the light emitting elements LE11, LE23, LE32 are red light emitting diodes; the light emitting elements LE12, LE21, LE33 are green light emitting diodes; the light emitting elements LE13, LE22, LE31 are blue light Light-emitting diodes.

In summary, the driving device of the present invention drives multiple light-emitting elements to generate emitted light in the same laser time interval, thereby increasing the brightness of the emitted light generated in the same laser time interval, and effectively reducing the possibility of flickering in the display screen. . In the embodiment of the present invention, by sharing the same driving circuit with multiple light-emitting elements, the circuit area is effectively reduced, the layout density of display pixels is increased, and the possibility of flickering of the display screen is effectively reduced.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be subject to those defined by the attached patent application scope.

S110, S120: steps

Claims (19)

A method for driving display pixels includes: lighting a first light-emitting element and a second light-emitting element in a first laser time interval in each of a plurality of first time intervals; and in a plurality of second time intervals A second laser time interval in each of the illuminating the first light-emitting element and the third light-emitting element, wherein the wavelengths of the light emitted by the first light-emitting element, the second light-emitting element, and the third light-emitting element are different same. According to the driving method described in claim 1, wherein each of the first time intervals further includes a first reset time interval and a first initialization time interval, and each of the second time intervals further includes a second time interval. The reset time interval and a second initialization time interval. According to the driving method described in item 1 of the scope of patent application, each of the first time intervals and each of the second time intervals are arranged in a staggered manner. According to the driving method described in claim 1, wherein the first light-emitting element is a green light-emitting diode, the second light-emitting element is a red light-emitting diode, and the third light-emitting element is a blue light. Light-emitting diodes. A driving device for display pixels, suitable for an impulse display device, comprising: a first driving circuit, receiving a first pixel data, and generating a first driving signal according to the first pixel data to drive a first Light-emitting element; a second driving circuit that receives a selected pixel data, based on the selected pixel data Material to generate a second driving signal; and an output selection circuit, coupled to the second driving circuit, receiving a selection signal, according to the selection signal to enable the second driving circuit to provide the second driving signal to drive a second The light-emitting element or a third light-emitting element, wherein the wavelengths of light emitted by the first light-emitting element, the second light-emitting element, and the third light-emitting element are different. The driving device for display pixels according to the 5th item of the scope of patent application, wherein the first driving circuit and the second driving circuit make the first light-emitting element and the second light-emitting element operate at a plurality of first laser time at the same time. Interval light emission, so that the first light-emitting element and the third light-emitting element simultaneously emit light in a plurality of second laser time intervals. For the driving device described in item 6 of the scope of patent application, the first laser time intervals occur in a plurality of first time intervals, and the second laser time intervals occur in a plurality of second time intervals, respectively, And each of the first time intervals and each of the second time intervals are arranged in a staggered manner. The driving device described in item 5 of the scope of patent application further includes a pixel data selection circuit coupled to the second driving circuit for selecting one of a second pixel data and a third pixel data One to generate the selected pixel data. The driving device according to claim 5, wherein each of the first driving circuit and the second driving circuit includes: a driver, receiving a power supply voltage, and coupled to the corresponding light-emitting element, the driver The control terminal receives a control bias; A reset switch receives a reference voltage and is controlled by a pre-scan signal to adjust the control bias in a reset time interval; a laser switch is coupled between the paths of the driver receiving the power supply voltage and A laser time interval is turned on; a storage capacitor, one end of which is coupled to the control terminal of the driver, and the other end of which receives the power supply voltage; a compensator, coupled between the control terminal of the driver and the correspondingly driven light-emitting element , To compensate for the change of the drive's turn-on voltage; and a data input switch, which receives corresponding pixel data, and writes the corresponding pixel data to the storage capacitor in a data writing time interval. The driving device according to claim 5, wherein the output selection circuit includes: a first switch; and a second switch, wherein the first end of the first switch and the second switch are coupled to each other, and Receiving the second driving signal, the second terminals of the first switch and the second switch are respectively coupled to the second light-emitting element and the third light-emitting element, and the control terminals of the first switch and the second switch respectively receive A first selection sub-signal and a second selection sub-signal of the selection signal. The driving device according to item 5 of the scope of patent application, wherein the first light-emitting element is a green light-emitting diode, the second light-emitting element is a red light-emitting diode, and the third light-emitting element is a blue light Light-emitting diodes. The driving device described in item 5 of the scope of patent application further includes: a laser control switch, which is coupled between the first driving circuit and the first light-emitting element, and determines whether to provide the first driving according to a laser control signal Signal to drive the first light-emitting element. A driving device for display pixels, suitable for an impulse display device, includes: a first driving circuit, receiving a first selected pixel data, and generating a first driving signal according to the first selected pixel data; And a first output selection circuit, coupled to the first driving circuit, receives a selection signal, and according to the selection signal, causes the first driving circuit to provide the first driving signal to drive a first light-emitting element and a second light-emitting element Element or a third light-emitting element, wherein the wavelengths of light emitted by the first light-emitting element, the second light-emitting element, and the third light-emitting element are different; and a pixel data selection circuit coupled to the first driver The circuit is used to select one of a first pixel data, a second pixel data, and a third pixel data to generate the selected pixel data. The driving device for display pixels according to item 13 of the scope of patent application, wherein the first driving circuit includes: a driver that receives a power supply voltage and is coupled to a corresponding light-emitting element, and the control terminal of the driver receives a control Bias; a reset switch that receives a reference voltage and is controlled by a pre-scan signal to adjust the control bias in a reset time interval; A laser switch is coupled between the paths through which the first drive circuit receives the power voltage and is turned on for a laser time interval; a storage capacitor, one end of which is coupled to the control terminal of the driver, and the other end of which receives the power Voltage; a compensator, coupled between the control terminal of the driver and the correspondingly driven light-emitting element, to compensate for the change in the turn-on voltage of the driver; and a data input switch, which receives corresponding pixel data, and a The data writing time interval enables the corresponding pixel data to be written to the storage capacitor. The driving device for display pixels as described in claim 13, wherein the first output selection circuit includes: a first switch; a second switch; and a third switch, wherein the first switch and the second switch The first ends of the two switches and the third switch are coupled to each other and receive the driving signal. The second ends of the first switch, the second switch, and the third switch are respectively coupled to the first light-emitting element and the third switch. The second light-emitting element and the third light-emitting element, the control terminals of the first switch, the second switch and the third switch respectively receive a first selection sub-signal, a second selection sub-signal and a first selection signal of the selection signal Three selection sub-signals. According to the display pixel driving device described in claim 13, wherein the first output selection circuit sequentially provides the driving signal to the first light-emitting element, the second light-emitting element, and the third light-emitting element. The driving device for display pixels as described in the scope of patent application, wherein the first light-emitting element, the second light-emitting element and the third light-emitting element are respectively a green light-emitting diode and a red light-emitting diode. Polar body and blue light emitting diode. As described in item 13 of the scope of patent application, the driving device for display pixels further includes: a second driving circuit that receives a second selected pixel data, and generates a second selected pixel data according to the second selected pixel data. Driving signal; and a second output selection circuit, coupled to the second driving circuit, receiving the selection signal, and according to the selection signal to enable the second driving circuit to provide the second driving signal to drive a fourth light-emitting element, a A fifth light-emitting element or a sixth light-emitting element, wherein the first light-emitting element and the fourth light-emitting element are illuminated at the same time and have different emission wavelengths; the second light-emitting element and the fifth light-emitting element are simultaneously lit Are lighted up and have different emission light wavelengths; and, the third light-emitting element and the sixth light-emitting element are lighted up at the same time and have different emission light wavelengths. As described in item 18 of the scope of patent application, the driving device for display pixels further includes: a third driving circuit, which receives a third selected pixel data, and generates a third selected pixel data according to the third selected pixel data. Driving signal; and a third output selection circuit, coupled to the third driving circuit, receiving the selection signal, according to the selection signal to make the third driving circuit provide the third driving signal to drive a seventh light-emitting element, a An eighth light-emitting element or a ninth light-emitting element, Wherein, the first light-emitting element, the fourth light-emitting element, and the seventh light-emitting element are simultaneously lit and have different emission wavelengths; the second light-emitting element, the fifth light-emitting element, and the eighth light-emitting element The third light-emitting element, the sixth light-emitting element, and the ninth light-emitting element are simultaneously lighted up and have different emission light wavelengths.

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