CN110400538B

CN110400538B - Electronic device

Info

Publication number: CN110400538B
Application number: CN201811126487.2A
Authority: CN
Inventors: 曾名骏; 丁景隆; 毛立维
Original assignee: Innolux Corp
Current assignee: Innolux Corp
Priority date: 2018-04-19
Filing date: 2018-09-26
Publication date: 2021-02-09
Anticipated expiration: 2038-09-26
Also published as: KR102664522B1; KR20190122154A; CN110400538A; EP4210039A1

Abstract

The invention discloses an electronic device which comprises a first electronic unit. The first electronic unit comprises a first light emitting diode and a first driving unit. The first driving unit is coupled to the first light emitting diode and receives a first data voltage. The first frame period of the first electronic unit has a plurality of driving periods, and the first driving unit drives the first light emitting diode according to the first data voltage in the plurality of driving periods.

Description

Electronic device

Technical Field

The present invention relates to an electronic device, and more particularly, to an electronic device capable of reducing color shift or improving light emitting efficiency.

Background

In the prior art, an Active Matrix (AM) led can drive the led by adjusting and controlling the current, so that the led emits light with different brightness. However, the light emitted by the led is prone to color shift along with the change of the current, which seriously affects the picture quality.

Disclosure of Invention

An embodiment of the invention provides an electronic device, which includes a first electronic unit. The first electronic unit comprises a first light emitting diode and a first driving unit. The first driving unit is coupled to the first light emitting diode and receives a first data voltage. The first frame period of the first electronic unit has a plurality of driving periods, and the first driving unit drives the first light emitting diode according to the first data voltage in the plurality of driving periods.

Another embodiment of the present invention provides an electronic device, which includes a first electronic unit and a second electronic unit. The first electronic unit comprises a first light emitting diode and a first driving unit. The second electronic unit comprises a second light emitting diode and a second driving unit. The first driving unit is coupled to the first light emitting diode and receives a first data voltage. The second driving unit is coupled to the second light emitting diode and receives a second data voltage. The first frame period of the first electronic unit has at least one driving period, and the first driving unit drives the first light emitting diode according to the first data voltage in the at least one driving period of the first frame period. The second frame period of the second electronic unit has at least one driving period, and the second driving unit drives the second light emitting diode according to the second data voltage in the at least one driving period of the second frame period. The first driving unit receives the first data voltage at a first starting time point, and the second driving unit receives the second data voltage at a second starting time point, wherein the first driving unit receives the first data voltage at a first starting time point, and the second driving unit receives the second data voltage at a second starting time point.

Drawings

Fig. 1 is a schematic view of an electronic device according to an embodiment of the present disclosure.

Fig. 2 is a schematic circuit diagram of an electronic unit according to an embodiment of the present disclosure.

Fig. 3 is a timing diagram illustrating operations of a first row of electronic units of an electronic device according to an embodiment of the present disclosure.

Fig. 4 is a timing diagram of the operation of the first row of electronic units of the electronic device in another embodiment.

Fig. 5 is a timing diagram of the operation of the first row of electronic units of the electronic device in another embodiment.

Fig. 6 is a schematic view of an electronic device according to another embodiment of the present disclosure.

FIG. 7 is a schematic circuit diagram of an electronic unit according to another embodiment of the invention.

Fig. 8 is a timing diagram of the operation of the first row of electronic units of the electronic device in another embodiment.

Fig. 9 is a timing diagram of the operation of the first row of electronic units of the electronic device in another embodiment.

Description of reference numerals: 10. 20-an electronic device; 100(1,1) to 100(M, N), 200(1,1) to 200(M, N) -electronic units; SN1 to SNM-scan lines; EM1 to EMM-drive control line; d1 to DN-data line; VDD1 to VDDN-voltage signal line; 110-a light emitting diode; 120-a drive unit; 130-a switching unit; M1A, M1B, M2A, M2B, M3A-transistors; C1A, C1B-capacitance; TF1, TF2, TF1 ', TF2 ', TF1 ", TF 2", TFM ', TFM "-frame periods; TP1 to TPM-period; TSA 1-TSAK, TSB 1-TSBK, TSA1 '-TSAK', TSB1 '-TSBK', TSA1 '-TSA 3', TSB1 '-TSB 3', TSA, TSB, TSM1 ', TSM 2' -drive period.

Detailed Description

As used herein, the terms "about" and "approximately" mean within 20%, 10%, or 5% of a given value or range. The quantities given herein are approximate, meaning that the meaning of "about" and "approximately" is implied unless otherwise specifically stated.

Fig. 1 is a schematic diagram of an electronic device 10 according to an embodiment of the present disclosure. The electronic device 10 may include a plurality of electronic units 100(1,1) to 100(M, N), where M and N are positive integers, and M and N are, for example, positive integers equal to or greater than 2. In some embodiments, the electronic units 100(1,1) to 100(M, N) may be arranged in an array, as in fig. 1, the electronic units 100(1,1) to 100(1, N) may be disposed in the same column (row), and the electronic units 100(1,1) to 100(M,1) may be disposed in the same column (column). The first positive integer in the span number indicated by the electronic unit corresponds to the column entry, and the second positive integer in the span number corresponds to the row entry.

Fig. 2 is a circuit diagram of the electronic unit 100(1,1), for example, according to an embodiment of the present invention. In some embodiments, the electronic units 100(1,1) to 100(M, N) may have the same or different circuit structures. In fig. 2, the electronic unit 100(1,1) may include a light emitting diode 110, a driving unit 120, and a switching unit 130. The driving unit 120 may be coupled to the light emitting diode 110, and the switching unit 130 may be coupled to the driving unit 120. If two elements are referred to as being coupled, the two elements may be directly electrically connected or the two elements may be further connected to each other through another element. In one frame period of the electronic unit 100(1,1), for example, data storage is performed first. For example, when the switch unit 130 of the electronic unit 100(1,1) is turned on, the driving unit 120 of the electronic unit 100(1,1) may receive the data voltage transmitted by the data line D1, the data voltage is stored in the capacitor of the driving unit 120, and the driving unit 120 may generate a current with a corresponding magnitude according to the data voltage to drive the light emitting diode 110, so that the light emitting diode 110 emits a corresponding brightness. The light emitting diode 100 may include a light-emitting diode (LED), a micro-LED, an organic light-emitting diode (OLED), or other suitable light-emitting diode elements, but is not limited thereto. In some embodiments, the light emitting diode 100 may include a Quantum Dot (QD) material, a fluorescent (fluorescent) material, a phosphorescent (phosphor) material, or other suitable light conversion materials, but the invention is not limited thereto. The electronic device 10 may be, for example, a display apparatus, a light emitting device, a sensing device, or other suitable devices, and is not limited thereto. In some embodiments, the electronic device 10 may be applied to a tiled device.

In some embodiments, as shown in fig. 2, the switch unit 130 may include a transistor M1A (e.g., a switch transistor), and the driving unit 120 may include a transistor M2A (e.g., a driving transistor), a capacitor C1A, and a transistor M3A (e.g., a control transistor), but is not limited thereto. The transistor M1A is coupled to the scan line SN1 and the data line D1, and when data storage is performed, a scan voltage is transmitted through the scan line SN1 to turn on the transistor M1A, so that the capacitor C1A can store the data voltage transmitted through the data line D1, such as "data storage", so that the transistor M2A can respectively generate currents according to the data voltages in a subsequent driving period to drive the light emitting diodes, and the brightness of light to be emitted is controlled by the amount of current flowing through the light emitting diodes. In some embodiments, the transistor M3A may be coupled to the driving control line EM1, and the transistor M3A may be controlled to be turned on or off by a control voltage transmitted through the driving control line EM 1. The driving control line EM1 provides a control voltage to turn on the transistor M3A during the driving period, for example, and the driving control line EM1 turns off the transistor M3A during other periods (e.g., the interval period other than the driving period), so as to adjust the time value of the driving period or the current flowing through the light emitting diode to adjust the brightness emitted by the light emitting diode. It should be noted that although the driving unit 120 of the present invention is shown only as the transistor M2A, the capacitor C1A and the transistor M3A, in other embodiments, the driving unit 120 may include other transistors, capacitors or other circuit elements as required. For example, the driving unit 120 may include a compensation transistor, a reset transistor, and is not limited thereto. It should be noted that although only one led 110 is shown in the electronic unit of the present invention, in other embodiments, the electronic unit may include a plurality of leds 110. It is noted that although the transistors of the present invention are illustrated as three-terminal transistors (a gate, a drain and a source), in other embodiments, some of the transistors may comprise four-terminal transistors (two gates, a drain and a source), for example

In the embodiment of fig. 1, the electronic device 10, for example, sequentially turns on the electronic units in the first row to the mth row. Specifically, the scan lines of the first row to the mth row, for example, sequentially transmit scan voltages to the coupled electronic units, and turn on the corresponding switch units, at this time, the electronic units transmit data voltages through the data lines respectively coupled thereto, and the data voltages are stored through the capacitors of the driving units, thereby completing data storage. In some embodiments, the electronic units in the same column, for example, the electronic units 100(1,1) to 100(1, N) are coupled to the scan line SN1, the electronic units 100(2,1) to 100(2, N) are coupled to the scan line SN2, and so on, the electronic units 100(M,1) to 100(M, N) are coupled to the scan line SNM. In addition, in some embodiments, the electronic units 100(1,1) to 100(1, N) are coupled to the driving control line EM1, the electronic units 100(2,1) to 100(2, N) are coupled to the driving control line EM2, and so on, and the electronic units 100(M,1) to 100(M, N) are coupled to the driving control line EMM, but not limited thereto. In some embodiments, the driving control lines EM1 to EMM respectively control the coupled electronic units, and the driving control lines EM1 to EMM are respectively coupled to different control terminals (not shown), such as a Gate On Panel (GOP) or an Integrated Circuit (IC), but not limited thereto. In some embodiments, the electronic units in the same row, such as the electronic units 100(1,1) to 100(M,1) are coupled to the data line D1, the electronic units 100(1,2) to 100(M,2) are coupled to the data line D2, and so on, and the electronic units 100(1, N) to 100(M, N) are coupled to the data line DN, but not limited thereto. After the data storage of the electronic units 100(1,1) to 100(1, N) in the first row is completed, the electronic device 10 may start to store the data of the electronic units 100(2,1) to 100(2, N) in the second row, and so on, but is not limited thereto. The coupling manner of the scan lines, the data lines or the driving control lines to the electronic units in different rows or different columns is only an example, and may be changed according to application requirements, for example, the driving control lines EM may be coupled to the electronic units in the same column, i.e. the extending direction of the driving control lines EM is substantially the same as the extending direction of the data lines.

Fig. 3 is an operation timing diagram of the first row of electronic units 100(1,1) to 100(M,1) of the electronic device 10, for example. In fig. 3, the electronic units 100(1,1) to 100(M,1) in the first row perform data storage, for example, at the time period TP1 to the time period TPM, respectively. In the Frame period (Frame period) TF1 of the electronic unit 100(1,1), the driving unit 120 of the electronic unit 100(1,1) receives the corresponding data voltage in the period TP1 and completes data storage, and in the following driving periods (e.g., the driving periods TSA1 to TSAK), corresponding currents can be respectively generated according to the data voltage, and the light emitting diodes 110 of the electronic unit 100(1,1) are driven by the corresponding currents, where K is, for example, a positive integer equal to or greater than 1, i.e., in the Frame period TF1 of the electronic unit 100(1,1), the driving unit 120 of the electronic unit 100(1,1) can drive the light emitting diodes 110K times, i.e., the number of light emitting times of the light emitting diodes 110 is K times. By the above driving method, since the number of times of light emission of the light emitting diode 110 is increased, human eyes cannot easily perceive flicker. In fig. 3, in the frame period TF2 of the electronic unit 100(2,1), the driving unit 120 of the electronic unit 100(2,1) receives the corresponding data voltage in the period TP2 and completes data storage, and in the following driving periods (e.g., the driving periods TSB1 to TSBK), corresponding currents are respectively generated according to the data voltage, and the light emitting diodes 110 of the electronic unit 100(2,1) are driven by the corresponding currents, and so on, and the electronic unit 100(M,1) is similar. In fig. 3, the frame period TF1 and the frame period TF2 (and/or the frame period TFM) correspond to the same frame, for example, and the respective starting time points of the driving periods TSA1 to TSAK in the frame period TF1 may be different from the respective starting time points of the driving periods TSB1 to TSBK in the second frame period TF2, that is, the light emitting diodes 100 in the electronic units of the first row and the light emitting diodes 100 in the electronic units of the second row emit light at different starting time points. In this way, the electronic units in the first column and the electronic units in the second column (or the electronic units in other columns) in the electronic device 10 may, for example, pass the currents through the coupled light emitting diodes in batches, which may reduce the possibility of simultaneously passing through the light emitting diodes coupled to the electronic units in the same row (and different columns) at the same initial time point, thereby reducing the current load of the electronic device 10. It should be noted that, in the embodiment of fig. 3, mainly the electronic units in adjacent rows emit light at different initial time points, but it is not limited that all the electronic units in all rows emit light at different initial time points. It should be noted that, in some embodiments, the starting time point of the driving period TSA1 in the frame period TF1 may be different from the starting time point of the first driving period (e.g., the driving period TSB1) in the plurality of driving periods TF2 to TFM, but the starting time point of the driving period TSAK in the frame period TF1 may be, for example, the same as one of the respective starting time points of the plurality of driving periods TSB1 to TSBK in the frame period TFM, but is not limited thereto.

By the driving manner as in fig. 3, the driving periods TSA1 to TSAK respectively have a sum of time values smaller than, for example, the time value of the frame period TF 1. In some embodiments, the ratio of the sum of the time values of the driving periods TSA1 to TSAK to the time value of the frame period TF1 is smaller than or equal to 1/8, but not limited thereto, in this case, in order to make the leds 110 emit the same brightness, the driving unit 120 generates a larger current to drive the leds 110, for example, the larger current is a current increased by 8 times, but not limited thereto. For example, in a conventional electronic device, the light emitting diode 110 needs to be continuously driven by 50 microamperes in one frame period, and the "continuously" means that the light emitting diode 110 is continuously turned on in one frame period, i.e. the duty ratio is 1, and the detailed duty ratio is defined as follows. However, according to an embodiment of the present invention, the ratio of the sum of the time values of the driving periods TSA1 to TSAK to the time value of the frame period TF1 is, for example, 1/8 (i.e., the duty ratio is 1/8), and the driving unit 120 generates, for example, a current of approximately 400 microampere 0.4 milliamp (50 microampere x8 is 400 microampere) to drive the light emitting diode 110. Since the light emitting diode 110 is driven by a relatively large current, the problem of color shift of the light emitting diode 110 caused by the change (or drift) of the current can be reduced, thereby improving the quality of the electronic device 10. Furthermore, according to the characteristics of the led, when the driving current is increased from the microampere level to the milliamp level, the light emitting efficiency of the led can also be increased, and therefore, in the above embodiment, the driving unit 120 may even generate a current less than 400 microampere to drive the led 110 to emit the corresponding light brightness, but the invention is not limited thereto. By reducing the time value of the light emitting time of the light emitting diode in the frame period, the problem of color cast of the light emitting diode of the electronic device along with the change of the driving current can be reduced. In addition, the light emitting efficiency of the light emitting diode can be improved by improving the driving current, so that the electric energy loss of the electronic device is reduced.

In addition, since the light emitting diodes 110 emitting light of different colors have different light emitting efficiency characteristics or different color shift characteristics, for example, the light emitting diodes 110 emitting light of different colors can be driven by currents of different magnitudes according to requirements, and the driving units 120 corresponding to different colors can have different numbers of transistors, for example. The "color shift characteristic" is a degree of chromaticity shift of the light emitting diode due to variation in the magnitude of a current flowing therethrough. In one embodiment, the number of transistors in the driving unit 120 for red light is, for example, greater than the number of transistors in the driving unit 120 for green light. In one embodiment, the number of transistors in the driving unit 120 for green light is greater than the number of transistors in the driving unit 120 for blue light. In addition, the currents of different magnitudes may be adjusted, for example, by controlling the time value of the driving period in the above-described frame period, for example, the longer the time value, the larger the accumulated current, but not limited thereto. In some embodiments, the sum of the time values of the electronic units of different colors respectively in the driving periods of one frame period may be unequal, but the invention is not limited thereto. For example, the light emitting diode 110 in the electronic unit 100(1,1) may emit blue light or green light, for example, and the light emitting diode 110 in the electronic unit 100(2,1) may emit red light, for example. Since the light emitting diodes that emit red light may be suitable to be driven with a relatively small current, the sum of the time values respectively possessed by the driving periods TSB1 to TSBK in the frame period TF2 is, for example, larger than the sum of the time values respectively possessed by the driving periods TSA1 to TSAK in the frame period TF1, but is not limited thereto. In some embodiments, the sum of the time values respectively possessed by the driving periods TSA1 to TSAK in the frame period TF1 is, for example, always equal to or not equal to the time values respectively possessed by the driving periods TSB1 to TSBK in the frame period TF 2.

In addition, since the curve relationship between the luminous efficiency of the leds emitting blue light and the luminous efficiency of the leds emitting green light with respect to the current is similar, in some embodiments, the total sum of the time values of the driving periods in the frame periods of the respective electronic units of the leds emitting blue light and the green light may be equal to each other, and may be smaller than the total sum of the time values of the driving periods in the frame periods of the electronic units of the leds emitting red light, for example, but not limited thereto. In other embodiments, the sum of the time values respectively possessed by the driving periods of the light emitting diodes emitting red light may be equal to or not equal to the sum of the time values respectively possessed by the driving periods of the light emitting diodes emitting blue light (and/or green light), for example. In other embodiments, the total sum of the time values respectively possessed by the driving periods of the light emitting diodes emitting red light, blue light and green light may be different from each other.

In fig. 3, the driving periods TSA1 to TSAK in the frame period TF1 may have equal time values, respectively, and the time value of the interval period between two adjacent driving periods TSA1 to TSAK is substantially equal to the time value of the interval period between the other two adjacent driving periods, but not limited thereto. In other embodiments, the time value of the interval period between at least two adjacent driving periods among the driving periods TSA1 to TSAK in the frame period TF1 is not equal to the time value of the interval period between the other two adjacent driving periods. The "interval period" may be defined as a period in which no current passes through the light emitting diode, for example, and the interval period excludes the period TP, for example. In other embodiments, at least two of the driving periods TSA1 to TSAK in the frame period TF1 may have unequal time values, for example, two adjacent driving periods or two non-adjacent driving periods. It should be noted that the frame period TF1 illustrated in the present invention has driving periods TSA1 to TSAK, for example, although at least three driving periods TSA1, TSA2 and TSAK are illustrated, but not limited thereto, in some embodiments, the frame period TF1 may have two driving periods, i.e., K is 2, for example, and similarly, the number of driving periods in the frame period TF2 or other frame periods is not limited as shown in the figure. It is noted that although the electronic unit 100(1,1) in the figure only draws the driving period of one frame period TF1, the electronic unit 100(1,1) may for example go through another frame period TF1 after the frame period TF1 is completed, and so on. Similarly, the electronic units 100(2,1) to 100(M,1) are similar, and thus the description is not repeated.

Fig. 4 is a timing diagram illustrating operations of the first row of electronic units 100(1,1) to 100(M,1) of the electronic device 10 according to another embodiment. In fig. 4, in the frame period TF1 'of the electronic unit 100(1,1), the driving periods TSA 1', TSA2 ', and TSAK' have time values, for example, which are not equal, respectively. Similarly, in the frame period TF2 ' of the electronic unit 100(2,1), the driving periods TSB1 ', TSB2 ' and TSBK ' respectively have unequal time values, and so on, and the plurality of driving periods in the frame period TFM ' of the electronic unit 100(M,1) respectively have unequal time values, but are not limited thereto. In some embodiments, the driving periods of the electronic units in at least one row in the frame period have time values respectively equal to the driving periods of the electronic units in another row in the frame period. In some embodiments, the driving periods of the electronic units in at least one row in the frame period may have time values that are not equal to the time values of the driving periods of the electronic units in another row in the frame period. The electronic units in different columns may be designed with different driving manners according to different requirements (including, but not limited to, the time values of different driving periods in a frame period, and the number of driving periods in a frame period). For example, in the frame period TF1 'of the electronic unit 100(1,1) in the first row, the driving periods TSA 1', TSA2 ', and TSAK' have different time values, but in the frame period TF2 'of the electronic unit 100(2,1) in the second row, the driving periods TSB 1', TSB2 ', and TSBK' have different time values.

Fig. 5 is a timing diagram illustrating operations of the first row of electronic units 100(1,1) to 100(M,1) of the electronic device 10 according to another embodiment. In fig. 5, in the frame period TF1 ″ of the electronic unit 100(1,1), the time value of the interval period between the driving period TSA1 ″ and the driving period TSA2 ″ is, for example, not equal to the time value of the interval period between the driving period TSA2 ″ and the driving period TSA3 ″. Likewise, in the frame period TF2 ″ of the electronic unit 100(2,1), the time value of the interval period between the driving period TSB1 ″ and the driving period TSB2 ″ is not equal to the time value of the interval period between the driving period TSB2 ″ and the driving period TSB3 ″ and so on, and in the frame period TFM ″ of the electronic unit 100(M,1), the time value of the interval period between two adjacent driving periods is not equal to the time value of the interval period between two other adjacent driving periods, for example, but is not limited thereto. In some embodiments, in the frame period TF1 ″ of the electronic unit 100(1,1) in the first row, the time value of the interval period between the driving periods TSA1 ″ and TSA2 ″ is not equal to the time value of the interval period between the driving periods TSA2 ″ and TSA3 ″ but in the frame period TF2 ″ of the electronic unit 100(2,1) in the second row, the time value of the interval period between the driving periods TSB1 ″ and TSB2 ″ is equal to the time value of the interval period between the driving periods TSB2 ″ and TSB3 ″.

The electronic device 10 can adjust the current to a corresponding magnitude by adjusting the sum of the time values of the driving periods in one frame period, so that the light emitting diodes in the electronic unit can emit corresponding brightness. Here, a ratio of a sum of time values of the respective driving periods in one frame period to a time value of the frame period is defined as a Duty ratio (Duty ratio), for example. In some embodiments, the duty cycle of the electronic unit may be designed to be less than 1. In some embodiments, the duty cycle of the electronic unit may be designed to be less than or equal to 1/2. In some embodiments, the duty cycle of the electronic unit may be designed to be less than or equal to 1/4. In some embodiments, the duty cycle of the electronic unit may be designed to be less than or equal to 1/8. In some embodiments, the duty cycle of the electronic unit may be designed to be less than or equal to 1/16.

Fig. 6 is a schematic diagram of an electronic device 20 according to another embodiment of the invention. The electronic device 20 and the electronic device 10 may have similar circuit structures. The electronic device 20 may include a plurality of electronic units 200(1,1) to 200(M, N), where M and N are positive integers. In some embodiments, the electronic units 200(1,1) to 200(M, N) may be arranged in an array, as in fig. 6, the electronic units 200(1,1) to 200(1, N) may be disposed in the same column, and the electronic units 200(1,1) to 200(M,1) may be disposed in the same row. The electronic device 20 may be similar to the electronic device 10, for example, the electronic units in different rows are sequentially turned on from the first row to the mth row, and the description is not repeated here. One difference between the electronic device 20 of fig. 6 and the electronic device 10 of fig. 1 is that the driving control lines EM1 to EMM in the electronic device 20 are coupled to the same control terminal (not shown), such as a Gate On Panel (GOP) or an Integrated Circuit (IC). The driving control lines EM1 to EMM of the electronic device 10 in fig. 1 are not coupled to each other, for example, so the driving control lines are respectively coupled to different control terminals (not shown), and are not limited thereto. In some embodiments, the driving control lines EM1 to EMM of the electronic device may be, for example, a portion of the driving control lines are coupled to each other, and another portion of the driving control lines are coupled to each other, that is, the driving control lines are divided into different portions (for example, equal to or larger than two portions), and the different portions of the driving control lines may be, for example, respectively coupled to different control terminals.

In some embodiments, the control terminal is disposed on a circuit board (not shown), for example, the circuit board is coupled to a substrate, and the electronic unit, the scan line, the data line, or other components are disposed on the substrate, but not limited thereto. The circuit board includes, for example, a flexible circuit board and a rigid circuit board, but is not limited thereto. In some embodiments, the control terminal, the electronic unit, the scan line, the data line, or other components are disposed on the same substrate, for example, in this case, the control terminal is a GOP. The material of the substrate may include glass, quartz, organic polymer or metal. If the substrate is made of an organic polymer, the substrate may include Polyimide (PI), polyethylene terephthalate (PET), Polycarbonate (PC), and the like, but is not limited thereto. The substrate may be, for example, an array substrate or a Chip On Film (COF) substrate.

In some embodiments, the electronic units 200(1,1) to 200(M, N) may have, for example, a similar circuit structure, but are not limited thereto. The circuit structure may be similar to the electronic unit 100(1,1) in fig. 2 or similar to the electronic unit 200(1,1) in fig. 7, but not limited thereto, and the electronic unit 200(1,1) in fig. 7 will be described in detail in the following description.

The electronic units 200(1,1) to 200(M, N) have similar circuit structures, which means that the number of the switching units, the driving units, the light emitting diodes or other elements in the electronic units is substantially the same, but the sizes or the stacking structures of the switching units, the driving units, the light emitting diodes or other elements are not limited to be the same. The circuit diagram of the electronic unit 100(1,1) in fig. 2 or the electronic unit 200(1,1) in fig. 7 is only a simple diagram for illustrating basically required components or circuits, but the present invention is not limited thereto, and in other embodiments, other components (including other transistors, electronic components, etc.) may be added to the circuit structure of the electronic unit, and the added components may be disposed or coupled at any end of the components in the electronic unit or between two components according to the requirement, which is not limited herein.

In some embodiments, the circuit structures or the stacked structures of the electronic units 100(1,1) to 100(M, N) shown in fig. 1 may be substantially similar or dissimilar. For example, the electronic units 100(1,1) to 100(M, N) may emit light of different wavelength bands (including, but not limited to, red, blue, green, or other suitable wavelength bands), so that the materials or the structural types of some layers (or elements) in the stacked structure of the electronic units may be different. For example, the light emitting chips or light emitting materials used for different electronic units may be different. Similarly, the circuit structures or the stacked structures of the electronic units 200(1,1) to 200(M, N) may be substantially similar or dissimilar, and will not be described again.

Fig. 7 is a circuit diagram of an electronic unit 200(1,1), for example, according to an embodiment of the present invention. In fig. 7, the electronic unit 200(1,1) may include a light emitting diode 210, a driving unit 220, and a switching unit 230. The driving unit 220 may be coupled to the light emitting diodes 210, and the switching unit 230 may be coupled to the driving unit 220. In one frame period of the electronic unit 200(1,1), the electronic unit 200(1,1) performs data storage first, for example. For example, when the switch unit 230 of the electronic unit 200(1,1) is turned on, the driving unit 220 of the electronic unit 200(1,1) receives the data voltage transmitted by the data line D1 through the switch unit 230, the data voltage is stored in the capacitor C1B of the driving unit 220, and the driving unit 220 generates a current with a corresponding magnitude according to the data voltage to drive the light emitting diode 210, so that the light emitting diode 210 emits a corresponding brightness.

The difference between fig. 7 and fig. 2 is that the driving unit 220 does not include the transistor M3A (e.g., a control transistor). In detail, the switch unit 230 in the electronic unit 200(1,1) of fig. 7 may include a transistor M1B (e.g., a switch transistor), and the driving unit 220 may include a transistor M2B (e.g., a driving transistor) and a capacitor C1B, and one end of the capacitor C1B is coupled to the driving control line EM1, for example. The transistor M1B is coupled to the scan line SN1 and the data line D1, and when data is stored, the scan line SN1 transmits a scan voltage to turn on the transistor M1B, and the data line D1 transmits a data voltage, for example, and the capacitor C1B stores the data voltage, so that the transistor M2B can generate a current with a corresponding magnitude according to the data voltage in a subsequent driving period to drive the light emitting diode 210. Since one end of the capacitor C1B is coupled to the driving control line EM1, it can affect whether the transistor M2B is turned on. The transistor M2B is turned on in the driving period, for example, and the transistor M2B is turned off in the other period (interval period), thereby controlling the sum of time values or the duty ratio of the driving period. It should be noted that the circuit diagram of the electronic unit 200(1,1) in fig. 7 is only schematic, and the electronic unit 200(1,1) may include other transistors, capacitors, or other suitable elements.

FIG. 8 is a timing diagram illustrating another operation of the present invention. In fig. 8, the electronic units 200(1,1) to 200(M,1) of the first row perform data storage, for example, at the time period TP1 to TPM, respectively. In the frame period TF1 of the electronic unit 200(1,1), after the electronic unit 200(1,1) obtains a data voltage in the period TP1, a current is generated according to the data voltage in the subsequent driving period TSA, and the light emitting diode 210 of the electronic unit 200(1,1) is driven by the current. Similarly, the electronic unit 200(2,1) drives the light emitting diode 210 of the electronic unit 200(2,1) in the driving period TSB after the data storage is completed in the period TP2 in the frame period TF 2. The frame periods TF1 and TF2 correspond to the same frame picture, and the time value of the frame period TF1 is substantially equal to the time value of the frame period TF 2. In fig. 8, the start time point of the driving period TSB in the frame period TF2 is substantially the same as the start time point of the driving period TSA in the frame period TF1, and so on, the start time point of the driving period TSM in the frame period TFM is substantially the same as the start time point of the driving period TSA in the frame period TF 1. In other embodiments, the ending time point of the driving period TSA and the ending time point of the driving period TSB may be substantially the same, but the invention is not limited thereto. In some embodiments, the start time point of the driving period TSM in the frame period TFM is substantially the same as the start time point of the driving period TSA in the frame period TF1, but the end time point of the driving period TSA may be substantially different from the end time point of the driving period TSB. In fig. 8, although the electronic units 200(1,1) to 200(M,1) respectively store data in different time periods TP1 to TPM, the electronic units 200(1,1) to 200(M,1) may drive the light emitting diodes 210 to emit light at substantially the same initial time point, in which case, the driving time periods of the electronic units in different rows have substantially the same initial time point, so the light emitting diodes in the electronic units may emit light at the same time. While the above may be defined as a time difference of less than about 10 microns (us), the invention is not limited thereto. In addition, as another embodiment for describing "simultaneously", the electronic units in the same row are coupled to the same voltage signal line, for example, the electronic units 200(1,1) to 200(M,1) in fig. 6 are coupled to the voltage signal line VDD1, so that when the voltage signal line VDD1 transmits a voltage, the voltage can be received by the electronic units 200(1,1) to 200(M,1), for example, at the same time.

In fig. 8, since the driving periods (including the start time point and/or the end time point) of the frame periods of the electronic units in different rows are substantially the same, the time value of the interval period of the electronic units (e.g. 200(1.1)) of this design may be larger than that of the embodiment of fig. 3, so as to reduce the flicker perceived by the user, in some embodiments, the flicker perceived by the user may be reduced by increasing the frame frequency of the electronic units, for example, by designing the frame frequency to be equal to or greater than 60 hertz (Hz). In some embodiments, the frame frequency may be designed to be equal to or greater than 120 hertz (Hz), but is not limited thereto.

As shown in fig. 8, the time value of the driving period TSA in the frame period TF1 is smaller than the frame period TF1, for example, and/or the time value of the driving period TSB in the frame period TF2 is smaller than the frame period TF2, for example, by the above design, the driving current of the led 210 can be increased, so that the color shift of the led 210 of the electronic device can be reduced, or the light emitting efficiency of the led 210 can be improved, and the power consumption of the electronic device 20 can be reduced.

Fig. 9 is a timing diagram illustrating operations of the first row of electronic units 200(1,1) to 200(M,1) of the electronic device 20 according to another embodiment. In fig. 9, the frame period TF1 'of the electronic unit 200(1,1) may include two driving periods, such as the driving period TSA 1' and the driving period TSA2 ', and the frame period TF 2' of the electronic unit 200(2,1) may also include two driving periods, such as the driving period TSB1 'and the driving period TSB 2', and so on, and the frame period TFM of the electronic unit 200(M,1) may also include two driving periods, such as the driving period TSM1 'and the driving period TSM 2', but is not limited thereto. As shown in fig. 9, the start time points of the driving period TSA1 ', the driving period TSB 1' and the driving period TSM1 'may be substantially the same, but the end time points of the driving period TSA 1', the driving period TSB1 'and the driving period TSM 1' are substantially different, while the start time points of the driving period TSA2 ', the driving period TSB 2' and the driving period TSM2 'are substantially the same, but the end time points of the driving period TSA 1', the driving period TSB1 'and the driving period TSM 2' are substantially the same, but not limited thereto.

In order to observe whether the driving manner of the electronic device is similar to the embodiment provided in the present disclosure, a user may display an image through the panel, and may obtain a time value of a driving period, a number of driven periods in one frame period, a time value of an interval period, a duty ratio, and the like of each electronic unit in the panel by using a light source sensor (photo sensor), and may obtain the driving manner between the electronic units in different rows.

The above description is only an example of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications are possible. Any modification, equivalent replacement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic device, comprising:

a first electronics unit comprising:

a first light emitting diode;

a first driving unit coupled to the first light emitting diode and receiving a first data voltage; and

a second electronics unit, wherein the first electronics unit and the second electronics unit are in adjacent columns, the second electronics unit comprising:

a second light emitting diode; and

a second driving unit coupled to the second light emitting diode and receiving a second data voltage;

wherein a first frame period of the first electronic unit has a plurality of driving periods, and the first driving unit drives the first light emitting diode according to the first data voltage in the plurality of driving periods of the first frame period,

wherein a second frame period of the second electronic unit has a plurality of driving periods, and the second driving unit drives the second light emitting diode according to the second data voltage in the plurality of driving periods of the second frame period, an

Wherein at least one of the plurality of driving periods in the first frame period does not overlap in time with at least one of the plurality of driving periods in the second frame period.

2. The electronic apparatus according to claim 1, wherein a plurality of the driving periods in the first frame period respectively have equal time values.

3. The electronic apparatus of claim 1, wherein at least two of the plurality of driving periods in the first frame period have unequal time values.

4. The electronic apparatus according to claim 1, wherein a time value of an interval period between two adjacent driving periods among the plurality of driving periods in the first frame period is equal to a time value of an interval period between another two adjacent driving periods.

5. The electronic apparatus according to claim 1, wherein a time value of an interval period between two adjacent driving periods among the plurality of driving periods in the first frame period is not equal to a time value of an interval period between another two adjacent driving periods.

6. The electronic device of claim 2,

the first driving unit receives the first data voltage in a reception period, wherein a plurality of the driving periods in the first frame period are respectively smaller than the reception period.

7. The electronic apparatus according to claim 1, wherein a sum of time values respectively possessed by a plurality of the driving periods in the first frame period is not equal to a sum of time values respectively possessed by a plurality of the driving periods in the second frame period.

8. An electronic device, comprising:

a first electronics unit comprising:

a first light emitting diode; and

the second electronic unit includes:

a second light emitting diode; and

wherein a first frame period of the first electronic unit has at least one driving period, and the first driving unit drives the first light emitting diode according to the first data voltage in the at least one driving period of the first frame period;

wherein a second frame period of the second electronic unit has at least one driving period, and the second driving unit drives the second light emitting diode according to the second data voltage in the at least one driving period of the second frame period;

wherein a start time point at which the first driving unit receives the first data voltage is different from a start time point at which the second driving unit receives the second data voltage, and a start time point of the at least one driving period of the first frame period is the same as a start time point of the at least one driving period of the second frame period.

9. The electronic device of claim 8,

the first frame period and the second frame period correspond to the same frame picture,

the at least one driving period in the first frame period respectively has a sum of time values smaller than that of the first frame period, and the at least one driving period in the second frame period respectively has a sum of time values smaller than that of the second frame period.

10. The electronic apparatus of claim 8, wherein a sum of time values respectively possessed by the at least one driving period in the first frame period is not equal to a sum of time values respectively possessed by the at least one driving period in the second frame period.