TWI871154B - Numerical control system of micro led chip panel and method thereof - Google Patents

Abstract

A numerical control system of micro LED chip panel comprises an external chip, a register array and a display area. The external chip is configured to provide a configuration information and a frame pixel data. The register array comprises a plurality of register modules. The configuration information comprises a plurality of module configuration information stored by corresponding register modules. A display control register is a subset of the register array used to store all module configuration information. The display area is configured to receive the module configuration information and the frame pixel data to generate a PWM modulation signal, and control display brightness and gray scale. The system of the present invention adopts the method of separately storing the configuration information, and configures at the beginning of each frame scanning to ensure that the picture display of each frame is complete.

Description

Digital end driving system and method for micro-luminescent diode display chip panel

The present invention relates to a digital end driving system and method, and in particular to a digital end driving system and method for a micro-luminescent diode display chip panel.

Micro LED display technology refers to a display technology that uses micron-sized self-luminous light-emitting diodes (LEDs) as light-emitting pixel units and assembles them on a drive panel to form a high-density LED array. Due to the small size, high sensitivity and self-luminescence of micro LED chips, it has greater advantages in brightness, resolution, contrast, energy consumption, service life, response speed and thermal stability compared to liquid crystal displays (LCDs) and organic light-emitting diodes (OLEDs) in terms of display.

The technical principles and circuit structures of the digital end drive of the display in the prior art mainly include two categories. The first type is the digital drive circuit in the LCD and OLED display fields. Since the display principles of the displays are different, the comparison of the technical content in the drive principle will not be analyzed too much here. The second type is the digital drive principle of the display technology of micro LED. Please refer to Figure 1, which is a block diagram of the digital end drive system P1 according to the prior art. As shown in Figure 1, the digital end drive system P1 of the prior art includes three parts: an external chip P11, a register array P12, and a display area P13. As can be seen from Figure 1, the existing micro LED driving method adopts the method of real-time configuration modification and data loading, that is, the display area P13 directly receives real-time configuration information from the register array P12. Please refer to Figure 2, which is a schematic diagram of the subframe timing cycle according to the previous technology. As shown in Figure 2, the digital end driving system is driven according to the Sync signal (abbreviated as S signal) and the Configuration signal (abbreviated as C signal) in the subframe timing cycle. In the digital end driving system, the position of the S signal and the C signal are set in the middle position of the subframe timing cycle during the frame scanning process according to the subframe timing cycle, and the specific position is determined by the external chip P11 (i.e., the host computer) and changes in real time.

In actual use, the above-mentioned driving methods of the prior art require real-time configuration of information and loading of data, which will lead to instability in the display driving control process and screen tearing, affecting the viewing experience. Therefore, solving the technical problems of display instability and screen image tearing caused by the current digital end driving method of the micro-luminescent diode display chip panel is an important research topic and research direction.

In view of this, one scope of the present invention is to provide a digital end driving system and method for a micro-luminescent diode display chip panel, which can solve the problems of the previous technology and solve the technical problem that the host computer changes the configuration in real time, resulting in unstable driving. The image display is more stable, the screen display is guaranteed, and the technical problems of unstable display and screen image tearing are effectively solved. The digital end driving system of the micro-luminescent diode display chip panel includes an external chip, a register array, and a display area. An external chip is used to provide a configuration message and a frame of pixel data. A register array is coupled to an external chip, the register array includes a plurality of register modules, the configuration information includes a plurality of module configuration information, and each register module is used to store the corresponding module configuration information. A display control register is electrically connected to the register array, which is a subset of the register array and is used to store a total module configuration information including the module configuration information. A display area is coupled to the external chip and the display control register, and is used to receive the total module configuration information and the frame pixel data to generate a PWM modulation signal, and control the display brightness and grayscale according to the PWM modulation signal. The digital end driving system of the micro-luminescent diode display chip panel displays brightness and grayscale according to a subframe timing cycle. The subframe timing cycle includes at least one C signal and at least one S signal. Under the C signal, the display control register stores the total module configuration information in the register array, and places the C signal in the subframe timing cycle at the initial position in the subframe timing cycle, and connects the S signal after the C signal; under the S signal, the display area receives the total module configuration information and the frame pixel data to generate the PWM modulation signal, and controls the display brightness and grayscale according to the PWM modulation signal.

The display area is used to receive the total module configuration information to generate an SFx signal, and combine the frame pixel data and the SFx signal to generate an SFMX signal, and superimpose the SFMX signal to generate the PWM modulation signal.

The display area further includes: a scan drive circuit coupled to the display control register for receiving the total module configuration information stored in the display control register to generate the SFx signal; a row of data transmission control circuits coupled to the external chip and the display control register for receiving the frame pixel data; and a pixel array including a plurality of pixels. Each pixel includes: a pixel driving circuit, which includes a memory, a modulator and a control circuit. The memory is coupled to the column data transmission control circuit and is used to receive and store the frame pixel data; the modulator is coupled to the memory and the scanning driving circuit and is used to receive the SFx signal and the frame pixel data, and combines the SFx signal and the frame pixel data to generate the SFMX signal, and superimposes the SFMX signal to generate the PWM modulation signal; the control circuit is coupled to the modulator; and a light-emitting diode is arranged in the control circuit, electrically connected to the control circuit, and has a light-emitting function. The control circuit receives the PWM modulation signal and controls the brightness and grayscale of the light-emitting diode according to the PWM modulation signal.

The modulator is used to place the S signal at the initial position in the subframe timing cycle and at a continuous position after the C signal.

The data transmission control circuit further includes: a frame buffer coupled to an external chip for receiving and storing the frame pixel data; and a data transmission control circuit body coupled to the frame buffer and electrically connected to the display control register for receiving and transmitting the frame pixel data.

Another scope of the present invention is to provide a digital end driving method for a micro-luminescent diode display chip panel, which includes the following steps: an external chip provides a configuration message and a frame of pixel data; a register array includes a plurality of register modules, the configuration message includes a plurality of module configuration messages, and each of the register modules stores the corresponding module configuration messages; under a C signal in a subframe timing cycle, a display control register stores the register array containing the module configuration messages; A total module configuration message of the module configuration message; under the C signal in the subframe timing cycle, the C signal in the subframe timing cycle is placed at the initial position in the subframe timing cycle, and an S signal is connected to the C signal; under the S signal in a subframe timing cycle, a display area receives the total module configuration message and the frame pixel data to generate a PWM modulation signal; and the display area controls the display brightness and grayscale of the display area according to the PWM modulation signal.

Among them, under the S signal in the subframe timing cycle, the step of the display area receiving the total module configuration information and the frame pixel data to generate the PWM modulation signal further includes the following sub-steps: a scanning drive circuit in the display area receives the total module configuration information to generate an SFx signal; a frame buffer in the display area transmits the frame pixel data; a row data transmission control circuit body in the display area transmits the frame pixel data from the frame buffer; a memory in the display area transmits and stores the frame pixel data from the row data transmission control circuit body; and a modulator in the display area receives the SFx signal and the frame pixel data to generate the PWM modulation signal.

Among them, the step in which the modulator in the display area receives the SFx signal and the frame pixel data to generate the PWM modulation signal further includes the following sub-steps: the modulator receives and combines the SFx signal and the frame pixel data to generate the SFMX signal; the modulator superimposes the SFMX signal to generate the PWM modulation signal; and under the S signal, the modulator places the S signal at the initial position in the sub-frame timing cycle.

Wherein, under the C signal in the subframe timing cycle, the step of placing the C signal in the subframe timing cycle at the initial position in the subframe timing cycle and placing the S signal continuously after the C signal further includes the following sub-steps: the display control register places the C signal at the initial position in the subframe timing cycle; and a modulator in the display area places the S signal at the initial position in the subframe timing cycle and at a continuous position after the C signal.

Among them, the step of controlling the display brightness and grayscale of the display area according to the PWM modulation signal further includes the following sub-steps: a control circuit in the display area receives the PWM modulation signal; and the control circuit controls the brightness and grayscale of a light-emitting diode in the display area according to the PWM modulation signal.

Compared to the digital end drive system mentioned in the prior art, the register array in the digital end drive system of the present invention further includes a display control register as a subset. The display control register places the C signal at the initial position of the subframe period and connects the S signal after the C signal. Because the display control register stores the total module configuration information used for the display area, the subframe period is automatically adjusted to C, S, SFX..., and the configuration information can be directly read from the display control register, so that the display area can operate stably. On the other hand, because the prior art does not have a display control register, it does not have the function of automatically adjusting the subframe period. It is necessary to read configuration information from the external chip only when the C signal appears, and to read frame pixel data from the external chip only when the S signal appears, which causes the display area to operate unsmoothly, resulting in the problem of image tearing on the screen.

P1: Digital end drive system

P11: External chip

P12: Register array

P13: Display area

1: Digital end drive system

11: External chip

12: Register array

121: Register module

122: Display control register

13: Display area

131: Scanning drive circuit

132: Column data transmission control circuit

1321: Frame buffer

1322: Column data transmission control circuit body

133: Pixel array

1331: Pixels

1332: Pixel driver circuit

1333: Storage

1334: Modulator

1335: Control circuit

1336: LED

S1-S6: Steps

S41-S553: Sub-steps

FIG1 is a block diagram of a digital end drive system according to the prior art.

Figure 2 is a schematic diagram of the subframe timing cycle based on the prior art.

FIG3 is a block diagram of a digital end driving system of a micro-luminescent diode display chip panel according to one specific embodiment of the present invention.

FIG4 is a block diagram of a digital end driving system of a micro-luminescent diode display chip panel further according to FIG3.

FIG5 is a schematic diagram of the structure of the digital end driving system of the micro-luminescent diode display chip panel according to FIG4.

Figure 6 is a pixel driving circuit diagram based on Figure 4.

FIG7 is a flow chart of a method for driving the digital end of a micro-luminescent diode display chip panel according to one specific embodiment of the present invention.

FIG8 is a further flow chart of the digital end driving method of the micro-luminescent diode display chip panel according to FIG7.

FIG9 is a flow chart of the digital end driving method of the micro-luminescent diode display chip panel according to FIG8 under the S signal.

FIG. 10 is a further flow chart of the digital end driving method of the micro-luminescent diode display chip panel according to FIG. 7 .

FIG. 11 is a further flow chart of the digital end driving method of the micro-luminescent diode display chip panel according to FIG. 7 .

FIG12 is a schematic diagram of the sub-frame timing cycle of the digital end driving method of the micro-luminescent diode display chip panel according to one specific embodiment of the present invention.

FIG13 is a schematic diagram of the SFx signal when Gray Value=0xC5 according to a digital end driving method of a micro-luminescent diode display chip panel according to a specific embodiment of the present invention.

Figure 14 is a PWM overlay diagram based on Figure 13.

In order to make the advantages, spirit and features of the present invention easier and clearer to understand, the following will be described and discussed in detail with reference to the attached drawings and embodiments. It is worth noting that these embodiments are only representative embodiments of the present invention. However, it can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

The terms used in the various embodiments disclosed in the present invention are only used for the purpose of describing specific embodiments and are not used to limit the various embodiments disclosed in the present invention. As used herein, the singular form also includes the plural form, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical terms and scientific terms) used in this specification have the same meanings as those commonly understood by ordinary technicians in the field to which the various embodiments disclosed in the present invention belong. The above terms (such as those defined in generally used dictionaries) will be interpreted as having the same meaning as the contextual meaning in the same technical field, and will not be interpreted as having an idealized meaning or an overly formal meaning unless clearly defined in the various embodiments disclosed in the present invention.

Please refer to Figure 3, which is a block diagram of a digital end driving system 1 of a micro-luminescent diode display chip panel according to one specific embodiment of the present invention. As shown in Figure 3, the digital end driving system 1 of the micro-luminescent diode display chip panel of the present invention includes an external chip 11, a register array 12 and a display area 13. The external chip 11 is used to provide configuration information and frame pixel data. Among them, the frame pixel data is the source data of the image. The configuration information refers to some control parameters for arranging the image source data to form a series of videos, such as: frame data, brightness/grayscale data, etc. The register array 12 is coupled to the external chip 11. The register array 12 includes a plurality of register modules 121. The structure of the register array 12 is a register array 12 composed of multiple register modules 121 for storing different module configuration information. The main function of the register array 12 is to store all the configuration information in the display device, including the configuration information of the display area 13. The configuration information includes a plurality of module configuration information, and each register module 121 is used to store the corresponding module configuration information. The display control register 122 is electrically connected to the register array 12, which is a subset of the register array 12 and is used to store the total module configuration information including all module configuration information. In other words, the display control register 122 is a register in the register array 12 that is specifically used to store the configuration information in the display area 13. The configuration information for the display area 13 stored in the display control register 122 includes row and column display control configuration information, that is, all configuration information for controlling the display state of the image. The configuration information includes but is not limited to the scanning time t and the data format, etc. The display area 13 is coupled to the external chip 11 and the display control register 122 to receive the total module configuration information and the frame pixel data to generate a PWM modulation signal, and control the display brightness and grayscale according to the PWM modulation signal. Among them, the digital end driving system 1 of the micro-luminescent diode display chip panel displays the brightness and grayscale according to the sub-frame timing cycle. The sub-frame timing cycle includes at least one C signal and at least one S signal. Under the C signal, the display control register 122 stores the total module configuration information in the register array 12, and places the C signal in the subframe timing cycle at the initial position in the subframe timing cycle, and then connects the S signal to the C signal. Under the S signal, the display area 13 receives the total module configuration information and frame pixel data to generate a PWM modulation signal, and controls the display brightness and grayscale according to the PWM modulation signal.

It should be noted that the display control register 122 is a subset of the register array 12. The configuration information stored in the multiple register modules 121 in the register array 12 is different. Of course, each register module 121 can also have its own subset. The function of each subset corresponds to the module position displayed in the display area where it is located. The number of display control registers 122 can correspond to the register module 121, or one display control register 122 can correspond to multiple register modules 121, but it is not limited to this.

Please refer to Figures 4, 5 and 6. Figure 4 is a block diagram of a digital end driving system 1 of a further micro-luminescent diode display chip panel according to Figure 3. Figure 5 is a structural schematic diagram of the digital end driving system 1 of the micro-luminescent diode display chip panel according to Figure 4. Figure 6 is a pixel driving circuit diagram according to Figure 4. As shown in Figures 4, 5 and 6. The column data transmission control circuit 132 further includes a frame buffer 1321 and a column data transmission control circuit body 1322. The frame buffer 1321 is coupled to the external chip 11 to receive and store frame pixel data. The column data transmission control circuit body 1322 is coupled to the frame buffer 1321 and is electrically connected to the display control register 122 to receive and transmit frame pixel data. The display area 13 further includes a scan driver circuit 131, a column data transmission control circuit 132 and a pixel array 133. The scan driver circuit 131 is coupled to the display control register 122 to receive the total module configuration information stored in the display control register 122 to generate an SFx signal (or SFX signal). The column data transmission control circuit 132 is coupled to the external chip 11 and the display control register 122 to receive frame pixel data. The pixel array 133 is composed of single pixels 1331. The pixel 1331 includes a pixel driving circuit 1332 and a light-emitting diode 1336. The pixel driving circuit 1332 includes a memory 1333, a modulator 1334 and a control circuit 1335. The memory 1333 is coupled to the column data transmission control circuit 132, and is used to receive and store frame pixel data. The modulator 1334 is coupled to the memory 1333 and the scanning driving circuit 131, and is used to receive the SFx signal and the frame pixel data, and combine the SFx signal and the frame pixel data to generate a SFMX signal, and superimpose the SFMX signal to generate a PWM modulation signal. The control circuit 1335 is coupled to the modulator 1334. The light-emitting diode 1336 is arranged in the control circuit 1335 and electrically connected to the control circuit 1335, and has a light-emitting function. The control circuit 1335 receives a PWM modulation signal, and controls the brightness and grayscale of the light-emitting diode 1336 according to the PWM modulation signal, thereby controlling the PMOS gate in the control circuit 1335. The modulator 1334 is used to place the S signal at the initial position in the subframe timing cycle, and at a continuous position after the C signal.

Specifically, the scan driver circuit 131 is a row control element. Therefore, the configuration information in the display control register 122 is respectively a row and column control element, and represents the scan driver circuit 131 and the column data transmission control circuit body 1322. It is explained here that since the column data transmission control circuit body 1322 assumes the function of source data input, it is named as the column data transmission control circuit body 1322.

Please refer to FIG. 7, which is a flow chart of a digital end driving method of a micro-LED display chip panel according to one specific embodiment of the present invention. As shown in FIG. 7, the digital end driving method of the LED display chip panel of the present invention comprises the following steps: Step S1: an external chip provides configuration information and frame pixel data; Step S2: a register array comprises a plurality of register modules, the configuration information comprises a plurality of module configuration information, and each register module stores the corresponding module configuration information; Step S3: under the C signal in the subframe timing cycle, the display control register The storage register array comprises these The total module configuration information of the module configuration information; step S4: under the C signal in the subframe timing cycle, the C signal in the subframe timing cycle is placed at the initial position in the subframe timing cycle, and the S signal is connected to the C signal; step S5: under the S signal in the subframe timing cycle, the display area receives the total module configuration information and the frame pixel data to generate a PWM modulation signal; and step S6: the display area controls the display brightness and grayscale of the display area according to the PWM modulation signal.

Please refer to FIG. 8 , which is a further flow chart of the digital end driving method of the micro-LED display chip panel according to FIG. 7 . As shown in FIG8 , step S5 (under the S signal) further includes the following sub-steps: sub-step S51: the scanning drive circuit receives the total module configuration information to generate the SFx signal; sub-step S52: the frame buffer transmits the frame pixel data; sub-step S53: the column data transmission control circuit body transmits the frame pixel data from the frame buffer; sub-step S54: the memory transmits and stores the frame pixel data from the column data transmission control circuit body; and sub-step S55: the modulator receives the SFx signal and the frame pixel data from the memory to generate a PWM modulation signal.

Please refer to FIG. 9, which is a flow chart of the digital end driving method of the micro-luminescent diode display chip panel under the S signal according to FIG. 8. As shown in FIG. 9, sub-step S55 further includes the following sub-steps: sub-step S551: the modulator receives and combines the SFx signal ("X" from 0 to "x", "x" determines the number of bits according to the grayscale value of the pixel, such as 8 bits, x=7) and the frame pixel data to generate the SFMX signal; sub-step S552: the modulator superimposes the SFMX signal to generate the PWM modulation signal; and sub-step S553: under the S signal, the modulator places the S signal at the initial position in the sub-frame timing cycle.

Please refer to FIG. 10, which is a further flow chart of the digital end driving method of the micro-luminescent diode display chip panel according to FIG. 7. As shown in FIG. 10, step S4 further includes the following sub-steps: sub-step S41: the display control register places the C signal at the initial position in the sub-frame timing cycle; and sub-step S42: the modulator in the display area places the S signal at the initial position in the sub-frame timing cycle and at a continuous position after the C signal.

Please refer to FIG. 11, which is a further flow chart of the digital end driving method of the micro-LED display chip panel according to FIG. 7. As shown in FIG. 11, step S6 further includes the following sub-steps: sub-step S61: the control circuit in the display area receives the PWM modulation signal; and sub-step S62: the control circuit controls the brightness and grayscale of the LED in the display area according to the PWM modulation signal.

Please refer to Figure 12, which is a schematic diagram of the sub-frame timing cycle of the digital end driving method of the micro-luminescent diode display chip panel according to one specific embodiment of the present invention. Please refer to Figure 12, wherein the S signal is a sync signal, which is used to control the transmission of frame source data. The C signal is a configuration signal, which is used to control the transmission of configuration information. In the sub-frame timing cycle, S and C respectively represent instructions for controlling data transmission, and the other positions are the time occupied by the image display process (i.e., the display process of the frame pixel data). The sub-frame timing cycle of Figure 12 is the panel-end driving timing. First, "C" is configuration, and the relevant driving configuration is read from the register array. This configuration can control the scanning time, data format, etc. Then load the frame pixel data in the frame buffer into the memory in the pixel. Combined with the scanning signal (SFx), PWM output is generated to control the on and off time of the micro-led. In this way, the micro-led is driven to achieve the set grayscale and brightness.

Please refer to Figures 13 and 14. Figure 13 is a schematic diagram of the SFx signal when Gray Value = 0xC5 according to the digital end driving method of the micro-luminescent diode display chip panel of one specific embodiment of the present invention. Figure 14 is a PWM stack diagram based on Figure 13. The timing of the SFx related signals is as follows, taking 8-bit grayscale driving as an example, as shown in Figure 13. The driving method of the present invention can ensure the integrity of the frame, and full-screen driving makes the display consistency better and the driving efficiency higher. As shown in Figure 14, for example, Gray Value = 0xC5, only bit7 bit6 bit2 bit0 is high, which means that SF7 SF6 SF2 SF0 appear in PWM, and the others do not appear. In addition, because PMOS is controlled, the signal needs to be reversed. The PWM waveform is shown in Figure 14. The SFMx signal in the figure is the internal signal in the modulator, which carries the grayscale information in the register and performs a signal inversion operation. PWM is the output signal of the modulator, which directly controls the PMOS transistor to achieve the purpose of controlling the on and off of the micro-led.

Compared to the prior art, the drive system of the present invention includes a display control register that places the C signal at the initial position of the subframe period, and places the S signal after the C signal. Moreover, because the display control register stores the configuration information for the display area, the subframe period is automatically adjusted to C→S→SFX.... The drive system of the present invention can directly read the configuration information from the display control register, so that the display area 4 can operate stably. On the other hand, because the previous technology did not have a display control register, it did not have the function of automatically adjusting the subframe period. It was necessary to read the configuration information from the external chip when the C signal appeared, and to read the frame pixel data from the external chip when the S signal appeared, which resulted in the display area not operating smoothly, resulting in the problem of image tearing on the screen.

In summary, the digital end driving system and method of the micro-luminescent diode display chip panel of the present invention is characterized in that the configuration information transmitted by the main host computer (external chip and register array) and the configuration information actually used (display control register and storage) are separated, and the host computer configuration information is only loaded into the actual use configuration at the start position of the frame scan (C and S), solving the technical problem of unstable driving caused by the host computer modifying the configuration in real time. In other words, the driving method of the present invention adopts a separate storage configuration method and performs configuration at the beginning of each frame scan. Pre-loading data and pre-configuration are performed at the initial position of each frame display, so there is no need to load data and load configuration information in real time during the frame display process, making the image display more stable. It is not only convenient for the host computer to configure the registers, but also does not affect the display of the panel. Therefore, the overall drive system can adjust and display efficiently, and ensure the complete display of each frame. It effectively solves the technical problems of unstable display and image tearing.

The above detailed description of the specific embodiments is intended to more clearly describe the features and spirit of the present invention, but is not intended to limit the scope of the present invention by the specific embodiments disclosed above. On the contrary, the purpose is to cover various changes and arrangements with equivalents within the scope of the patent application for the present invention.

1: Digital end drive system

11: External chip

12: Register array

121: Register module

122: Display control register

13: Display area

Claims (10)

A digital end driving system for a micro-luminescent diode display chip panel includes: an external chip for providing a configuration message and a frame of pixel data; a register array coupled to the external chip, the register array including a plurality of register modules, the configuration message including a plurality of module configuration messages, each of the register modules storing the corresponding module configuration messages; and a display control register electrically connected to the register array, which is a subset of the register array and is used to store a total module configuration message including the module configuration messages; and a display area coupled to the external chip and the display control register, for receiving the total module configuration message and the frame of pixel data to generate a PWM modulation signal. The invention relates to a display device for displaying a PWM modulation signal, and controlling the display brightness and grayscale according to the PWM modulation signal; wherein the digital end driving system of the micro-luminescent diode display chip panel displays the brightness and grayscale according to a sub-frame timing cycle, and the sub-frame timing cycle includes at least one C signal and at least one S signal. Under the C signal, the display control register stores the total module configuration information in the register array, and places the C signal in the sub-frame timing cycle at the initial position in the sub-frame timing cycle, and connects the S signal to the C signal; under the S signal, the display area receives the total module configuration information and the frame pixel data to generate the PWM modulation signal, and controls the display brightness and grayscale according to the PWM modulation signal. For example, the digital end driving system of the micro-luminescent diode display chip panel in the first item of the patent application scope, wherein the display area is used to receive the total module configuration information to generate an SFx signal, and combine the frame pixel data and the SFx signal to generate an SFMX signal, and superimpose the SFMX signal to generate the PWM modulation signal. As in the digital end driving system of the micro-luminescent diode display chip panel of the patent application scope Item 2, wherein the display area further comprises: a scanning driving circuit coupled to the display control register to receive the total module configuration information stored in the display control register to generate the SFx signal; a row data transmission control circuit coupled to the external chip and the display control register to receive the frame pixel data; and a pixel array comprising a plurality of pixels, each of which comprises: a pixel driving circuit comprising a register, a modulator and a control circuit, the register coupled to the row data transmission control circuit The input control circuit is used to receive and store the frame pixel data; the modulator is coupled to the register and the scanning drive circuit, and is used to receive the SFx signal and the frame pixel data, and combine the SFx signal and the frame pixel data to generate the SFMX signal, and superimpose the SFMX signal to generate the PWM modulation signal; the control circuit is coupled to the modulator; and a light-emitting diode is arranged in the control circuit, electrically connected to the control circuit, and has a light-emitting function; wherein the control circuit receives the PWM modulation signal, and controls the brightness and grayscale of the light-emitting diode according to the PWM modulation signal. For example, in the digital end driving system of the micro-luminescent diode display chip panel of the patent application scope Item 3, the modulator is used to place the S signal at the initial position in the subframe timing cycle and at a continuous position after the C signal. For example, the digital end driving system of the micro-luminescent diode display chip panel in the patent application scope Item 3, wherein the row data transmission control circuit further includes: a frame buffer coupled to an external chip for receiving and storing the frame pixel data; and a row data transmission control circuit body coupled to the frame buffer and electrically connected to the display control register for receiving and transmitting the frame pixel data. A method for driving the digital end of a micro-luminescent diode display chip panel comprises the following steps: an external chip provides a configuration message and a frame of pixel data; a register array comprises a plurality of register modules, the configuration message comprises a plurality of module configuration messages, each of the register modules stores the corresponding module configuration messages; under a C signal in a subframe timing cycle, a display control register stores the module configuration messages in the register array; a total module configuration message; under the C signal in the subframe timing cycle, the C signal in the subframe timing cycle is placed at the initial position in the subframe timing cycle, and an S signal is connected to the C signal; under the S signal in a subframe timing cycle, a display area receives the total module configuration message and the frame pixel data to generate a PWM modulation signal; and the display area controls the display brightness and grayscale of the display area according to the PWM modulation signal. As in the digital end driving method of the micro-luminescent diode display chip panel of the patent application scope Item 6, wherein under the S signal in the sub-frame timing cycle, the display area receives the total module configuration information and the frame pixel data to generate the PWM modulation signal, and further includes the following sub-steps: a scanning drive circuit in the display area receives the total module configuration information to generate an SFx signal; A frame buffer in the display area transmits the frame pixel data; a column data transmission control circuit body in the display area transmits the frame pixel data from the frame buffer; a memory in the display area transmits and stores the frame pixel data from the column data transmission control circuit body; and a modulator in the display area receives the SFx signal and the frame pixel data from the memory to generate the PWM modulation signal. For example, the digital end driving method of the micro-luminescent diode display chip panel in the patent application scope Item 7, wherein the step in which the modulator in the display area receives the SFx signal and the frame pixel data to generate the PWM modulation signal further includes the following sub-steps: the modulator receives and combines the SFx signal and the frame pixel data to generate an SFMX signal; the modulator superimposes the SFMX signal to generate the PWM modulation signal; and under the S signal, the modulator places the S signal at the initial position in the sub-frame timing cycle. For example, the digital end driving method of the micro-luminescent diode display chip panel of item 6 of the patent application scope, wherein under the C signal in the subframe timing cycle, the C signal in the subframe timing cycle is placed at the initial position in the subframe timing cycle, and the S signal is continuously placed after the C signal, and the step further includes the following sub-steps: the display control register places the C signal at the initial position in the subframe timing cycle; and a modulator in the display area places the S signal at the initial position in the subframe timing cycle and at a continuous position after the C signal. For example, the digital end driving method of the micro-luminescent diode display chip panel in item 6 of the patent application scope, wherein the step of controlling the display brightness and grayscale of the display area according to the PWM modulation signal in the display area further includes the following sub-steps: a control circuit in the display area receives the PWM modulation signal; and the control circuit controls the brightness and grayscale of a light-emitting diode in the display area according to the PWM modulation signal.

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