TWI850720B - Driving device - Google Patents

Abstract

A driving device includes a sweep circuit and a display circuit. The sweep circuit includes the convert circuit. The convert circuit is configured to receive N differential signals to output M sweep signals, wherein the N differential signals include a start signal, a plurality of step signals and a plurality of loop signals. The display circuit is coupled to the sweep circuit, and is configured to receive and compare a sweep signal of the M sweep signals and a data signal to set a light-on stage and the light-off stage. The sweep signal in the M scan signals is related to the start signal, the plurality of step signals and the plurality of loop signals, wherein N is a positive integer greater than 0, and M is a positive integer greater than 0.

Description

Drive device

The present invention relates to a driving device, and in particular to a driving device for a micro-luminescent diode.

Nowadays, the luminous efficiency of Organic Light-Emitting Diode (OLED) is proportional to the signal size, but the luminous efficiency of Micro Light Emitting Diode Display (μLED) is best within a certain signal size range and with a corresponding lighting time. If the best luminous efficiency of a micro-LED panel is sought, the driving circuit of the micro-LED cannot be directly designed using the driving circuit of the organic LED.

The content of the invention is intended to provide a simplified summary of the disclosure so that readers can have a basic understanding of the disclosure. This content of the invention is not a complete overview of the disclosure, and it is not intended to point out the important/key elements of the embodiments of the present case or to define the scope of the present case.

One technical aspect of the present case is related to a driving device. The driving device includes a scanning circuit and a display circuit. The scanning circuit includes a converter. The converter is used to receive N differential signals to output M scanning signals. The N differential signals include a start signal, a plurality of step signals, and a plurality of cycle signals. The display circuit is coupled to the scanning circuit, and is used to receive and compare the scanning signals and data signals of the M scanning signals to set the brightness on stage and the brightness off stage. The scanning signals in the M scanning signals are related to the start signal, the plurality of step signals, and the plurality of cycle signals. N is a positive integer greater than 0, and M is a positive integer greater than 0.

Therefore, according to the technical content of this case, the driving device shown in the embodiment of this case can set the signal size range and lighting time to achieve the effect of optimizing the luminous efficiency of the micro-luminescent diode.

After reading the implementation method below, a person with ordinary knowledge in the technical field to which this case belongs can easily understand the basic spirit and other invention purposes of this case, as well as the technical means and implementation methods adopted in this case.

In order to make the description of the disclosure more detailed and complete, the following provides an illustrative description of the implementation and specific embodiments of the present invention; however, this is not the only form of implementing or using the specific embodiments of the present invention. The implementation covers the features of multiple specific embodiments and the method steps and their sequence for constructing and operating these specific embodiments. However, other specific embodiments may also be used to achieve the same or equivalent functions and step sequences.

Unless otherwise defined in this specification, the scientific and technical terms used herein have the same meanings as those understood and used by persons of ordinary skill in the art to which this case belongs. In addition, singular terms used in this specification include the plural form of the terms, and plural terms also include the singular form of the terms, unless otherwise conflicting with the context.

FIG. 1 is a circuit block diagram of a driving device according to an embodiment of the present invention. FIG. 2 is a circuit diagram of a display circuit of a driving device according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 2 together. As shown in the figure, the driving device 100 includes a scanning circuit 110 and a display circuit 120, and the scanning circuit 110 includes a converter 111. In terms of connection, the display circuit 120 is coupled to the scanning circuit 110. For example, the scanning circuit 110 can output a scanning signal SW_1, and the scanning signal SW_1 can be the same signal as the scanning signal SW, so the display circuit 120 can receive the scanning signal SW_1, but the present invention is not limited to this.

In order to optimize the light-emitting efficiency of the micro-luminescent diode, the present invention provides a driving device 100 as shown in FIG. 1 and FIG. 2 . The detailed description of the related operation is as follows.

FIG. 3 is a timing diagram of various signals of a driving device according to an embodiment of the present invention. To make the above operation of the driving device 100 easier to understand, please refer to FIG. 1 to FIG. 3 together. In one embodiment, the converter 111 is used to receive N differential signals (e.g., ISP_0 to ISP_N) to output M scanning signals (e.g., SW_1 to SW_M), and the N differential signals include a start signal (e.g., V1 in FIG. 3), a plurality of step signals (e.g., ΔV in FIG. 3), and a plurality of loop signals (e.g., loop1 to loop10 in FIG. 3).

Then, the display circuit 120 is used to receive and compare the scanning signal (e.g., SW_1) and the data signal Vdata of the M scanning signals (e.g., SW_1~SW_M) to set the brightness on stage (e.g., T1 in Figure 3) and the brightness off stage (e.g., T2 in Figure 3). The scanning signals in the M scanning signals are related to the start signal (e.g., V1 in Figure 3), a plurality of step signals (e.g., ΔV in Figure 3), and a plurality of loop signals (e.g., loop1~loop10 in Figure 3), and N is a positive integer greater than 0, and M is a positive integer greater than 0.

For example, please refer to Figure 2 and Figure 3. The scanning signal SW_1 can be SW. The scanning signal can adjust the output size through the start signal V1, a plurality of step signals ΔV and a plurality of loop signals loop1~loop10. The start signal V1 can be 2V, the step signal ΔV can be 0.2V, the voltage V2 can be V1+10×ΔV=2+10×0.2=4, and the data signal Vdata can be 2.6V. In one embodiment, the display circuit 120 can be used as the brightness opening stage T1 through the start signal V1 and the data signal Vdata, that is, the voltage range of 1~2.6V is the output range of the scanning signal SW during the brightness opening stage T1. On the contrary, the display circuit 120 can be used as the brightness closing stage T2 through the data signal Vdata and the voltage V2, but the present case is not limited to this.

Referring to FIG. 2 , in one embodiment, the display circuit 120 is further used to receive the light-emitting signal EM, and the light-emitting diode D1 of the display circuit 120 emits light according to the data signal Vdata, the light-emitting signal EM, and the scanning signal SW. For example, the display circuit 120 includes any type of diode, and the light-emitting signal EM is used to control the diode coupled to the light-emitting diode D1 to control the data signal Vdata and the scanning signal SW in accordance with the timing to flow into the light-emitting diode D1 to emit light, but the present invention is not limited thereto.

FIG. 4A to FIG. 4D illustrate various signal timing diagrams of a driving device according to some embodiments of the present invention. Referring to FIG. 2 and FIG. 4A to FIG. 4D, in some embodiments, the display circuit 120 simultaneously receives and writes the data signal (e.g., Vdata_1 to Vdata_4) and the scan signal SW. For example, the display circuit 120 can simultaneously receive and write the data signal (e.g., Vdata_1 to Vdata_4) and the scan signal SW, and the display circuit 120 can compare the relationship between the data signal (e.g., Vdata_1 to Vdata_4) and the scan signal SW to set the brightness on stage (e.g., T11, T21, T31, T41) and the brightness off stage (e.g., T12, T22, T32).

In some embodiments, when the scanning signal SW is less than or equal to the data signal (e.g., Vdata_1 to Vdata_4), it is a brightness-on stage (e.g., T11, T21, T31, T41) and the display circuit 120 is turned on to emit light. For example, the LED D1 of the display circuit 120 can output 96, 128, 192 or 255 brightness gray levels. Please refer to Figure 2 and Figure 4A. When the LED D1 of the display circuit 120 wants to output 96 brightness gray levels, the data signal can be the data signal Vdata_1 corresponding to the 96 brightness gray levels, and the scanning signal can be SW. When the scanning signal SW is the same as the data signal Vdata_1, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness turn-on stage T11, but the present invention is not limited to this.

In one embodiment, please refer to FIG. 2 and FIG. 4B , when the light-emitting diode D1 of the display circuit 120 wants to output 128 brightness gray levels, the data signal can be a data signal Vdata_2 corresponding to 128 brightness gray levels, and the scanning signal can be SW. When the scanning signal SW is the same as the data signal Vdata_2, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness-on stage T21, but the present invention is not limited thereto.

In one embodiment, please refer to FIG. 2 and FIG. 4C . When the light-emitting diode D1 of the display circuit 120 wants to output 192 brightness gray levels, the data signal may be a data signal Vdata_3 corresponding to 192 brightness gray levels, and the scanning signal may be SW. When the scanning signal SW is the same as the data signal Vdata_3, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness-on stage T31, but the present invention is not limited thereto.

In one embodiment, please refer to FIG. 2 and FIG. 4D. When the light-emitting diode D1 of the display circuit 120 wants to output 255 brightness gray levels, the data signal can be the data signal Vdata_4 corresponding to the 255 brightness gray levels, and the scanning signal can be SW. When the scanning signal SW is the same as the data signal Vdata_4, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness-on stage T41, but the present invention is not limited thereto.

In one embodiment, please refer to Figures 4A to 4D, the brightness turn-on stage T41 is greater than the brightness turn-on stage T31, the brightness turn-on stage T31 is greater than the brightness turn-on stage T21, and the brightness turn-on stage T21 is greater than the brightness turn-on stage T11. In addition, the display circuit 120 can display the corresponding grayscale brightness through the brightness turn-on stage (for example: T11 to T41), the data signal (for example: Vdata_1 to Vdata_4) and the scanning signal SW, but the present case is not limited to this.

Please refer to FIG. 2 and FIG. 4A to FIG. 4D. In some embodiments, when the scanning signal SW is greater than the data signal (e.g., Vdata_1 to Vdata_4), it is the brightness off stage (e.g., T12, T22, T32) and the display circuit 120 is turned off. For example, the light-emitting diode D1 of the display circuit 120 can output 96, 128, 192 or 255 brightness gray levels. Please refer to FIG. 2 and FIG. 4A. When the light-emitting diode D1 of the display circuit 120 wants to output 96 brightness gray levels, the data signal can be the data signal Vdata_1 corresponding to the 96 brightness gray levels, and the scanning signal can be SW. When the display circuit 120 receives and writes The stage when the input scanning signal SW is greater than the data signal Vdata_1 is the brightness off stage T12, at which the display circuit 120 is turned off. In other words, the light-emitting diode D1 of the display circuit 120 can continue to display 96 brightness gray levels in the brightness on stage T11, but when it reaches the brightness off stage T12, the light-emitting diode D1 of the display circuit 120 is turned off, but the present invention is not limited to this.

In one embodiment, please refer to FIG. 2 and FIG. 4B. When the light-emitting diode D1 of the display circuit 120 is to output 128 brightness gray levels, the data signal may be a data signal Vdata_2 corresponding to 128 brightness gray levels, and the scanning signal may be SW. When the display circuit 120 receives and writes the scanning signal SW greater than the data signal Vdata_2, the data signal Vdata_2 may be output. _2 is the brightness off stage T22, at which the display circuit 120 is turned off. In other words, the light-emitting diode D1 of the display circuit 120 can continue to display 128 brightness gray levels in the brightness on stage T21, but when it reaches the brightness off stage T22, the light-emitting diode D1 of the display circuit 120 is turned off, but the present invention is not limited to this.

In one embodiment, please refer to FIG. 2 and FIG. 4C. When the LED D1 of the display circuit 120 is to output 192 brightness gray levels, the data signal may be a data signal Vdata_3 corresponding to 192 brightness gray levels, and the scan signal may be SW. When the display circuit 120 receives and writes the scan signal SW greater than the data signal Vdata_3, the data signal Vdata_3 may be output. _3 is the brightness off stage T32, at which the display circuit 120 is turned off. In other words, the light-emitting diode D1 of the display circuit 120 can continue to display 192 brightness gray levels in the brightness on stage T31, but when it reaches the brightness off stage T32, the light-emitting diode D1 of the display circuit 120 is turned off, but the present invention is not limited to this.

In one embodiment, please refer to FIG. 2 and FIG. 4D. When the LED D1 of the display circuit 120 is to output 255 brightness gray levels, the data signal may be the data signal Vdata_4 corresponding to the 255 brightness gray levels, and the scanning signal may be SW. Since the 255 brightness gray level is full brightness (or full white gray level), when the LED D1 is to output 255 brightness gray levels, there is no brightness off stage in the display circuit 120. In other words, the LED D1 of the display circuit 120 may continue to display 255 brightness gray levels in the brightness on stage T41, but the present invention is not limited thereto.

In one embodiment, referring to FIGS. 4A to 4D , the brightness closing stage T12 is greater than the brightness closing stage T22 , and the brightness closing stage T22 is greater than the brightness closing stage T32 , but the present invention is not limited thereto.

FIG5A-5D are various signal timing diagrams of a driving device according to some embodiments of the present invention. Please refer to FIG2 and FIG5A-5D. In some embodiments, the display circuit 120 is first used to receive and write the data signal (e.g., Vdata_1 to Vdata_4), and then the display circuit 120 is used to receive and write the scanning signal SW. For example, the display circuit 120 can first be used to receive and write a data signal (e.g., Vdata_1 to Vdata_4), and then the display circuit 120 can be used to receive and write a scan signal SW. Then, the display circuit 120 can compare the relationship between the data signal (e.g., Vdata_1 to Vdata_4) and the scan signal SW to set the brightness on stage (e.g., T13, T23, T33, T43) and the brightness off stage (e.g., T14, T24, T34).

In some embodiments, when the scanning signal SW is less than or equal to the threshold value (Vth_1~Vth_4) of the data signal (eg, Vdata_1~Vdata_4), it is a brightness-on stage (eg, T13, T23, T33, T43) and the display circuit 120 is turned on to emit light. For example, the LED D1 of the display circuit 120 can output 96, 128, 192 or 255 brightness gray levels, please refer to Figure 2 and Figure 5A. When the LED D1 of the display circuit 120 wants to output 96 brightness gray levels, the data signal can be the threshold value Vth_1 of the data signal Vdata_1 corresponding to the 96 brightness gray levels, and the scanning signal can be SW. When the scanning signal SW is the same as the threshold value Vth_1 of the data signal Vdata_1, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness turn-on stage T13, but the present case is not limited to this. In addition, the display circuit 120 includes a capacitor C, and the capacitor C stores a threshold value Vth_1 of the data signal Vdata_1. Therefore, the data signal actually written into the light-emitting diode D1 of the display circuit 120 may be the threshold value Vth_1 of the data signal Vdata_1 corresponding to 96 brightness gray levels.

In one embodiment, please refer to FIG. 2 and FIG. 5B . When the light-emitting diode D1 of the display circuit 120 wants to output 128 brightness gray levels, the data signal may be the threshold value Vth_2 of the data signal Vdata_2 corresponding to the 128 brightness gray levels, and the scanning signal may be SW. When the scanning signal SW is the same as the threshold value Vth_2 of the data signal Vdata_2, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness-on stage T23, but the present invention is not limited thereto. In addition, the capacitor C of the display circuit 120 stores the threshold value Vth_2 of the data signal Vdata_2, so the data signal actually written into the light-emitting diode D1 of the display circuit 120 may be the threshold value Vth_2 of the data signal Vdata_2 corresponding to 128 brightness gray levels.

In one embodiment, please refer to FIG. 2 and FIG. 5C . When the light-emitting diode D1 of the display circuit 120 wants to output 192 brightness gray levels, the data signal may be the threshold value Vth_3 of the data signal Vdata_3 corresponding to the 192 brightness gray levels, and the scanning signal may be SW. When the scanning signal SW is the same as the threshold value Vth_3 of the data signal Vdata_3, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness-on stage T33, but the present invention is not limited thereto. In addition, the capacitor C of the display circuit 120 stores the threshold value Vth_3 of the data signal Vdata_3, so the data signal actually written into the light-emitting diode D1 of the display circuit 120 may be the threshold value Vth_3 of the data signal Vdata_3 corresponding to the 192 brightness gray level.

In one embodiment, please refer to FIG. 2 and FIG. 5D . When the light-emitting diode D1 of the display circuit 120 wants to output 255 brightness gray levels, the data signal may be the threshold value Vth_4 of the data signal Vdata_4 corresponding to the 255 brightness gray levels, and the scanning signal may be SW. When the scanning signal SW is the same as the threshold value Vth_4 of the data signal Vdata_4, the stage in which the display circuit 120 receives and writes the scanning signal SW less than or equal to the data signal is the brightness-on stage T43, but the present invention is not limited thereto. In addition, the capacitor C of the display circuit 120 stores the threshold value Vth_4 of the data signal Vdata_4, so the data signal actually written into the light-emitting diode D1 of the display circuit 120 may be the threshold value Vth_3 of the data signal Vdata_3 corresponding to the 255 brightness gray level.

In one embodiment, please refer to Figures 5A to 5D, the brightness turn-on stage T43 is greater than the brightness turn-on stage T33, the brightness turn-on stage T33 is greater than the brightness turn-on stage T23, and the brightness turn-on stage T23 is greater than the brightness turn-on stage T13. In addition, the display circuit 120 can display the corresponding grayscale brightness through the brightness turn-on stage (for example: T13 to T43), the threshold value (Vth_1 to Vth_4) of the data signal (for example: Vdata_1 to Vdata_4) and the scanning signal SW, but the present case is not limited to this.

Please refer to FIG. 2 and FIGS. 5A to 5D. In some embodiments, when the scanning signal SW is greater than the threshold value (Vth_1 to Vth_4) of the data signal (eg, Vdata_1 to Vdata_4), it is the brightness off stage (eg, T14, T24, T34) and the display circuit 120 is turned off. For example, the LED D1 of the display circuit 120 can output 96, 128, 192 or 255 brightness gray levels. Please refer to FIG. 2 and FIG. 5A. When the LED D1 of the display circuit 120 wants to output 96 brightness gray levels, the data signal can be the threshold value Vth_1 of the data signal Vdata_1 corresponding to the 96 brightness gray levels, and the scanning signal can be SW. When the display circuit 120 receives and writes The stage when the input scanning signal SW is greater than the threshold value Vth_1 of the data signal Vdata_1 is the brightness off stage T14, at which the display circuit 120 is turned off. In other words, the light-emitting diode D1 of the display circuit 120 can continue to display 96 brightness gray levels in the brightness on stage T13, but when it reaches the brightness off stage T14, the light-emitting diode D1 of the display circuit 120 is turned off, but the present invention is not limited to this.

In one embodiment, please refer to FIG. 2 and FIG. 5B. When the light-emitting diode D1 of the display circuit 120 is to output 128 brightness gray levels, the data signal may be a threshold value Vth_2 of the data signal Vdata_2 corresponding to 128 brightness gray levels, and the scanning signal may be SW. When the display circuit 120 receives and writes the scanning signal SW greater than the data signal Vdata The stage of the threshold value Vth_2 of _2 is the brightness off stage T24, at which the display circuit 120 is turned off. In other words, the light-emitting diode D1 of the display circuit 120 can continue to display 128 brightness gray levels in the brightness on stage T23, but when it reaches the brightness off stage T24, the light-emitting diode D1 of the display circuit 120 is turned off, but the present invention is not limited to this.

In one embodiment, please refer to FIG. 2 and FIG. 5C. When the light-emitting diode D1 of the display circuit 120 is to output 192 brightness gray levels, the data signal may be a threshold value Vth_3 of the data signal Vdata_3 corresponding to 192 brightness gray levels, and the scanning signal may be SW. When the display circuit 120 receives and writes the scanning signal SW greater than the data signal Vdata The stage of the threshold value Vth_3 of _3 is the brightness off stage T34, at which the display circuit 120 is turned off. In other words, the light-emitting diode D1 of the display circuit 120 can continue to display 192 brightness gray levels in the brightness on stage T33, but when it comes to the brightness off stage T34, the light-emitting diode D1 of the display circuit 120 is turned off, but the present invention is not limited to this.

In one embodiment, please refer to FIG. 2 and FIG. 5D. When the LED D1 of the display circuit 120 is to output 255 brightness gray levels, the data signal may be the threshold value Vth_4 of the data signal Vdata_4 corresponding to the 255 brightness gray levels, and the scanning signal may be SW. Since the 255 brightness gray level is full brightness (or full white gray level), when the LED D1 is to output 255 brightness gray levels, there is no brightness off stage in the display circuit 120. In other words, the LED D1 of the display circuit 120 may continue to display 255 brightness gray levels in the brightness on stage T43, but the present invention is not limited thereto.

In one embodiment, referring to FIGS. 5A to 5D , the brightness closing stage T14 is greater than the brightness closing stage T24 , and the brightness closing stage T24 is greater than the brightness closing stage T34 , but the present invention is not limited thereto.

In addition, in comparison, the luminous characteristics of Organic Light-Emitting Diode (OLED) components are that the greater the current provided, the greater the brightness obtained, and the luminous efficiency is proportional to the current change, so the brightness change can be controlled by using a very simple circuit to control the write voltage. However, the characteristic of the micro light emitting diode display (μLED) element is that it can obtain relatively good efficiency when operating at a certain voltage value, but when its brightness needs to be adjusted, it cannot control the voltage change to provide different current methods. This method will make the luminous efficiency of the μLED become particularly poor. Therefore, the driving device 100 technology of the present case can control the display circuit 120 to write a signal (for example: data signal Vdata) and then compare it with the scanning signal SW written by the scanning circuit 110 to turn on for a period of time (for example: brightness turn-on stage T1) to light up the panel (for example: scanning circuit 110).

In one embodiment, please refer to FIG. 2 , which shows that the circuit 120 includes a pulse width modulation circuit 121 (e.g., PWM circuit 121) and a pulse amplitude modulation circuit 123 (e.g., PAM circuit 123). The pulse width modulation circuit 121 (e.g., PWM circuit) is used to output a pulse width modulation signal, and the pulse amplitude modulation circuit 123 (e.g., PAM circuit 123) is used to output a pulse height modulation signal. For example, after writing data (e.g., data signal Vdata) to the display circuit 120 through the pulse width modulation circuit 121 (e.g., PWM circuit 121), the pulse width modulation signal is written into the display circuit 120 and the display circuit 120 emits light. The light-emitting time needs to be when writing data (e.g., data signal Vdata) to the next line, and the display circuit 120 emits light again. The light-emitting length of each line can be adjusted. The time for the scanning signal SW in the pulse width modulation circuit 121 (e.g., PWM circuit 121) can increase or decrease the overall brightness, but the present case is not limited to this.

FIG. 6 is a circuit block diagram of a driving device according to an embodiment of the present invention. As shown in the figure, the panel 900 includes a driving device 100A (not shown in the figure, i.e., at least one scanning circuit 110A and at least one display circuit (e.g., 120A, 120B, 120C)), a signal source integrated circuit Sr, a gate circuit GOA, a first source circuit board Sb1, a second source circuit board Sb2, a flexible board FFC, and a panel control board Tc.

In one embodiment, at least one scanning circuit 110A is used to output a first scanning signal SW_1, a second scanning signal SW_2, and a third scanning signal SW_3. The signal source integrated circuit Sr is used to output a first data signal S1, a second data signal S2, and a third data signal S3. At least one display circuit 120A is used to receive the first scanning signal SW_1 and the first data signal S1. At least one display circuit 120B is used to receive the second scanning signal SW_2 and the second data signal S2. At least one display circuit 120C is used to receive the third scanning signal SW_3 and the third data signal S3. In addition, the operation method of the driving device 100A (i.e., at least one scanning circuit 110A and at least one display circuit (e.g., 120A, 120B, 120C)) is similar to that of the above-mentioned driving device 100, so in order to shorten the description, it will not be described in detail here.

FIG. 7 is a block diagram of various signals of a driving device according to some embodiments of the present invention. Referring to FIG. 7, in one embodiment, N differential signals (not shown in the figure, for example: ISP_0~ISP_N) include a first differential signal ISP_0, a second differential signal ISP_1, and a third differential signal ISP_2. The first differential signal ISP_0 includes n start signals, the second differential signal ISP_1 includes n step signals, and the third differential signal ISP_2 includes n loop signals, and n is an integer greater than or equal to 0. For example, the n start signals may be Data init1[0]~Data init1[n], the n step signals may be Data step1[0]~Data step1[n], and the n loop signals may be Data loop1[0]~Data loop1[n], but the present invention is not limited thereto.

Please refer to Figure 1. In one embodiment, the converter 111 includes a microcontroller 1111. The scanning circuit 110 further includes M digital-to-analog converters 113 and M buffers 115, and the microcontroller 1111, the M digital-to-analog converters 113 and the M buffers 115 are used to receive content data of N differential signals (e.g., ISP_0~ISP_N) to output M scanning signals (e.g., SW_1~SW_M).

FIG. 8 is a circuit block diagram of a driving device according to an embodiment of the present invention. Referring to FIG. 8, in one embodiment, the converter 111C further includes a differential signal decoder 113C, a timing regenerator 115C, and a data lock register 119C. The differential signal decoder 113C is used to receive N differential signals (e.g., ISP_0~ISP_N), a signal string STB, and a lock signal LOCK. The differential signal includes a plurality of signals (e.g., signals BK, BAC, POL+, RGB data, EOL, Setting, or Setting data).

FIG. 9 is a schematic diagram of the operation of a driving device according to an embodiment of the present invention. Referring to FIG. 1, FIG. 2 and FIG. 9, in an embodiment, the driving circuit 100D includes a first scanning circuit 110D, a second scanning circuit 110E and a display circuit 120D. The first scanning circuit 110D can output 960 scanning signals in different regions (e.g., scanning signal strings S1 to S360, S361 to S720 and S721 to S960), and the display circuit 120D can be divided into three regions (e.g., display regions L1 to L360, L361 to L720 and L721 to L960). In addition, the 960 scanning signals (e.g., scanning signal strings S1~S360, S361~S720, and S721~S960) output by the first scanning circuit 110D can sequentially light up the display areas L1~L360, L361~L720, and L721~L960. Similarly, the operation of the second scanning circuit 110E is similar to that of the first scanning circuit 110D, and the first scanning circuit 110D and the second scanning circuit 110E are driven simultaneously. In order to reduce the content of the specification, it will not be repeated here.

The above operation method is to output a plurality of scanning signals to a panel (eg, display circuit 120D) through a plurality of scanning circuits (eg, first scanning circuit 110D, second scanning circuit 110E), and the resolution of panel 120E can be 1440. 960. The coupling method is as follows. You can see that each line (for example, the line of the output signal S1) is connected to the position of about 3 lines (for example, the output signals L1, L361, and L721). The lighting of these 3 lines is controlled simultaneously, controlling the 360 pixel structure, and each 360CH part will also have a signal connected together for output to increase the signal stability.

From the above implementation of the present invention, it can be seen that the application of the present invention has the following advantages: The driving device shown in the embodiment of the present invention can set the signal size range and lighting time to achieve the effect of optimizing the light-emitting efficiency of the micro-luminescent diode.

Although the above implementation method discloses a specific implementation example of the present case, it is not intended to limit the present case. A person with ordinary knowledge in the technical field to which the present case belongs can make various changes and modifications without deviating from the principle and spirit of the present case. Therefore, the scope of protection of the present case shall be based on that defined by the scope of the accompanying patent application.

100, 100A: driver 110: scanning circuit 111: converter 1111: microcontroller 113: digital-to-analog converter 115: buffer ISP_0~ISP_N: differential signal SW_1~SW_M, SW: scanning signal 120: display circuit 121: pulse width modulation circuit 123: pulse amplitude modulation circuit Vdata: data signal VDD: power signal EM: light-emitting signal D1, D2, D3: light-emitting diode V1: start signal ΔV: step signal loop1~loop10: loop signal Vdata_1~Vdata_4: data signal T1: Brightness on stage T2: Brightness off stage V2: Voltage T11, T21, T31, T41: Brightness on stage T12, T22, T32: Brightness off stage Vth_1~Vth_4: Threshold value T13, T23, T33, T43: Brightness on stage T14, T24, T34: Brightness off stage 110A: At least one scanning circuit 900: Panel 110A: At least one scanning circuit 120A, 120B, 120C: At least one display circuit Sr: Signal source integrated circuit S1: First data signal S2: Second data signal S3: Third data signal GOA: Gate circuit Sb1: First source circuit board Sb2: Second source circuit board FFC: Soft board Tc: Panel control board 100C: Driver 110C: Scanning circuit 111C: Converter 1111C: Microcontroller 113C: Digital-to-analog converter 115C: Timing regenerator 119C: Data lock register STB: Signal string LOCK: Lock signal 100D: Driver circuit 110D: First scanning circuit 110E: Second scanning circuit 120E: Display circuit L1～L960: Line S1～S960: Scanning signal

In order to make the above and other purposes, features, advantages and embodiments of the present invention more clearly understandable, the attached drawings are described as follows: FIG. 1 is a circuit block diagram of a driving device according to an embodiment of the present invention. FIG. 2 is a circuit diagram of a display circuit of a driving device according to an embodiment of the present invention. FIG. 3 is a timing diagram of various signals of a driving device according to an embodiment of the present invention. FIG. 4A to FIG. 4D are timing diagrams of various signals of a driving device according to some embodiments of the present invention. FIG. 5A to FIG. 5D are timing diagrams of various signals of a driving device according to some embodiments of the present invention. FIG. 6 is a circuit block diagram of a driving device according to an embodiment of the present invention. FIG. 7 is a block diagram of various signals of a driving device according to some embodiments of the present invention. FIG. 8 is a block diagram of a circuit of a driving device according to an embodiment of the present invention. FIG. 9 is a schematic diagram of the operation of a driving device according to an embodiment of the present invention. According to the conventional operation method, the various features and components in the figure are not drawn in proportion. The drawing method is to present the specific features and components related to the present invention in the best way. In addition, the same or similar component symbols are used to refer to similar components/parts between different figures.

Domestic storage information (please note in the order of storage institution, date, and number) None Foreign storage information (please note in the order of storage country, institution, date, and number) None

100:Drive device

110: Scanning circuit

111: Converter

1111: Microcontroller

113: Digital to Analog Converter

115: Buffer

ISP_0~ISP_N: differential signal

SW_1~SW_M: Scanning signal

Claims (10)

A driving device includes: a scanning circuit, including: a converter for receiving N differential signals to output M scanning signals, wherein the N differential signals include a start signal, a plurality of step signals and a plurality of cycle signals; and a display circuit coupled to the scanning circuit, and used to receive and compare a scanning signal and a data signal of the M scanning signals to set a brightness on stage and a brightness off stage; wherein a scanning signal of the M scanning signals is related to the start signal, the plurality of step signals and the plurality of cycle signals, wherein N is a positive integer greater than 0, and wherein M is a positive integer greater than 0. A driving device as described in claim 1, wherein the display circuit is further used to receive a light-emitting signal, wherein a light-emitting diode of the display circuit emits light according to the data signal, the light-emitting signal and the scanning signal. A driving device as described in claim 1, wherein the display circuit simultaneously receives and writes the data signal and the scanning signal. A driving device as described in claim 3, wherein when the scanning signal is less than or equal to the data signal, this is the brightness-on stage and the display circuit is turned on to emit light. A driving device as described in claim 4, wherein when the scanning signal is greater than the data signal, it is the brightness off stage and the display circuit is turned off. A driving device as described in claim 2, wherein the display circuit is first used to receive and write the data signal, and then the display circuit is used to receive and write the scanning signal. A driving device as described in claim 6, wherein when the scanning signal is less than or equal to a threshold value of the data signal, this is the brightness turn-on stage and the display circuit is turned on to emit light. A driving device as described in claim 7, wherein when the scanning signal is greater than the threshold value of the data signal, it is the brightness off stage and the display circuit is turned off. A driving device as described in claim 2, wherein the converter includes a microcontroller, wherein the scanning circuit further includes M digital-to-analog converters and M buffers, wherein the microcontroller, the M digital-to-analog converters and the M buffers are used to receive the N differential signals to output the M scanning signals. The driving device as described in claim 2, wherein the N differential signals include a first differential signal, a second differential signal, and a third differential signal, wherein the first differential signal includes n start signals, the second differential signal includes n step signals, and the third differential signal includes n cyclic signals, wherein n is an integer greater than or equal to 0.

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