Display panel and display device

Abstract

The embodiment of the invention discloses a display panel and a display device. The display panel comprises a plurality of micro light-emitting devices, a plurality of micro driving chips and a plurality of touch sensing electrodes. The micro-driving chip is arranged corresponding to the micro-light-emitting device and is used for driving the micro-light-emitting device to emit light. The micro-driving chip comprises a first micro-driving chip, the at least one touch sensing electrode is arranged corresponding to the at least one first micro-driving chip, the first micro-driving chip comprises a touch sensing signal end, and the touch sensing signal end is electrically connected with the touch sensing electrode. The first micro-driving chip is used for receiving touch sensing signals of the correspondingly arranged touch sensing electrodes. Therefore, the touch sensing signal of the touch sensing electrode is received and processed through the first micro-driving chip, and a main chip is not required to receive the touch sensing signal and perform related operation, so that the power consumption of the main chip is greatly reduced, and the power consumption of the display panel and the display device is reduced.

Description

Technical Field

[0001] The present invention relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] With the rapid development of display technology, touch display technology has gradually spread throughout people's lives. Most of the existing technologies directly add a touch panel to the display panel to realize the touch display function. In addition, most of the touch driving electrodes and touch sensing electrodes on the touch panel are connected to the main chip on the display panel, so that the touch sensing signal fed back by the touch sensing electrode is received through the main chip to detect the touch position. However, since the main chip not only provides the display panel with the signal required for display, but also receives and processes the touch sensing signal of the touch sensing electrode, the power consumption of the main chip is relatively large, which is not conducive to the application of touch display panels. Summary of the invention

[0003] The present invention provides a display panel and a display device. By setting a first micro-driving chip to receive a touch sensing signal of a correspondingly set touch sensing electrode, a main chip is not required to receive the touch sensing signal and perform related operations, thereby greatly reducing the power consumption of the main chip and the power consumption of the display panel and the display device.

[0004] In a first aspect, an embodiment of the present invention provides a display panel, including:

[0005] A plurality of micro light-emitting devices, a plurality of micro drive chips and a plurality of touch sensing electrodes;

[0006] The micro-driving chip is arranged corresponding to the micro-light-emitting device, and is used to drive the micro-light-emitting device to emit light;

[0007] The micro-driving chip includes a first micro-driving chip, at least one touch sensing electrode is arranged corresponding to at least one of the first micro-driving chips, the first micro-driving chip includes a touch sensing signal terminal, and the touch sensing signal terminal is electrically connected to the touch sensing electrode; the first micro-driving chip is used to receive the touch sensing signal of the correspondingly arranged touch sensing electrode.

[0008] In a second aspect, an embodiment of the present invention further provides a display device, comprising the display panel provided by any embodiment of the first aspect of the present invention.

[0009] In the display panel provided by the embodiment of the present invention, the micro-driving chip is arranged corresponding to the micro-light-emitting device, and is used to drive the micro-light-emitting device to emit light. The micro-driving chip includes a first micro-driving chip, the first micro-driving chip includes a touch sensing signal terminal, at least a first touch sensing electrode is arranged corresponding to at least one first micro-driving chip, and the touch sensing signal terminal is electrically connected to the corresponding touch sensing electrode, and then the touch sensing signal of the corresponding touch sensing electrode is received through the touch sensing signal terminal of the first micro-driving chip. In this way, when the touch function is realized, the main chip is not required to receive the touch sensing signal of the touch sensing electrode and perform relevant processing on the touch sensing signal, thereby greatly reducing the power consumption of the main chip, and then reducing the power consumption of the display panel and the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention;

[0011] Figure 2 is a simplified structural diagram of a first micro-driving chip provided by an embodiment of the present invention;

[0012] Figure 3 is a schematic structural diagram of another display panel provided by an embodiment of the present invention;

[0013] Figure 4 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention;

[0014] Figure 5 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention;

[0015] Figure 6 A timing diagram of a display panel provided by an embodiment of the present invention;

[0016] Figure 7 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention;

[0017] Figure 8 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention;

[0018] Fig. 9 is a functional structure diagram of a first micro-driving chip provided by an embodiment of the present invention;

[0019] Fig.10 is a partial structural schematic diagram of a first micro-driving chip provided by an embodiment of the present invention;

[0020] Fig.11 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention;

[0021] Fig.12 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention;

[0022] Fig.13 A schematic structural diagram of a display device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be fully described below in combination with the drawings in the embodiments of the present invention through specific implementation methods. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work fall within the protection scope of the present invention.

[0024] Figure 1 is a schematic structural diagram of a display panel provided by an embodiment of the present invention, Figure 2 is a simplified structural diagram of a first micro-drive chip provided by an embodiment of the present invention. Figure 1 and Figure 2 The display panel includes a plurality of micro-light emitting devices 10, a plurality of micro-driving chips 20 and a plurality of touch sensing electrodes 30. The micro-driving chip 20 is arranged corresponding to the micro-light emitting device 10 to drive the micro-light emitting device 10 to emit light. The micro-driving chip 20 includes a first micro-driving chip 210, at least one touch sensing electrode 30 is arranged corresponding to at least one first micro-driving chip 20, the first micro-driving chip 210 includes a touch sensing signal terminal RX, the touch sensing signal terminal RX is electrically connected to the touch sensing electrode 30, and the first micro-driving chip 210 is used to receive a touch sensing signal from the correspondingly arranged touch sensing electrode 30.

[0025] Specifically, the micro-driving chip 20 is a Micro IC, i.e., a micro integrated circuit, and the micro light-emitting device can be a Micro LED, i.e., a micro light-emitting diode. Each micro-driving chip 20 can be set corresponding to a plurality of micro light-emitting devices 10, and then the micro-driving chip 20 provides data signals and scanning signals to the corresponding plurality of micro light-emitting devices 10 to drive the plurality of micro light-emitting devices 10 to emit light. For example, Figure 1 In the illustrated embodiment, one micro-driving chip 20 is electrically connected to three micro-light-emitting devices 10, and the three micro-light-emitting devices 10 electrically connected to each other can generate red light, green light, and blue light, respectively. It is understandable that the embodiment of the present invention does not limit the number of micro-light-emitting devices 10 electrically connected to the same micro-driving chip 20, and those skilled in the art can set it as needed.

[0026] In addition, the display panel also includes a plurality of touch sensing electrodes 30, and the touch sensing electrodes 30 are used to generate touch sensing signals according to the touch sensing information and / or touch pressure information of the display panel. In the prior art, the plurality of touch sensing electrodes 30 are electrically connected to the main chip, and the touch sensing signals of the touch sensing electrodes 30 are received by the main chip, and the touch sensing signals are processed by the main chip to determine the touch position and touch pressure of the touch sensing electrodes 30. However, since the main chip also needs to provide the display panel with the data signals and scanning signals required for display, on this basis, receiving the touch sensing signals and processing the touch sensing signals will cause the main chip to consume more power, which is not conducive to the application of touch display panels.

[0027] To this end, in the embodiment of the present invention, the micro-driving chip 20 includes a first micro-driving chip 210, the first micro-driving chip 210 includes a touch sensing signal terminal RX, and at least one touch sensing electrode 30 is arranged corresponding to at least one first micro-driving chip 210, that is, along the thickness direction of the display panel, the vertical projection of the touch sensing electrode 30 can surround at least part of the vertical projection of the first micro-driving chip 210. For example, Figure 1 In the illustrated embodiment, one touch sensing electrode 30 can be arranged corresponding to one first micro-driving chip 210, that is, along the thickness direction of the display panel, the vertical projection of the touch sensing electrode 30 is a field shape, and the first micro-driving chip 210 is located in the grid formed by the touch sensing electrodes 30. It should be noted that Figure 1 The description is only given by way of example in which one touch sensing electrode 30 corresponds to one first micro-driving chip 210, but this is not intended to be limiting. In other embodiments, Figure 3 FIG. 1 is a schematic diagram of the structure of another display panel provided by an embodiment of the present invention. Figure 3In the illustrated embodiment, a plurality of touch sensing electrodes 30 are arranged corresponding to a first micro-drive chip 210. Exemplarily, along the thickness direction of the display panel, the vertical projections of the plurality of touch sensing electrodes 30 all surround the vertical projection of at least part of the first micro-drive chip 210, and the vertical projections of the plurality of touch sensing electrodes 30 form an approximately field shape. In addition, in other embodiments, a plurality of first micro-drive chips 210 may be arranged corresponding to a touch sensing electrode 30, or a plurality of first micro-drive chips 210 may be arranged corresponding to a plurality of touch sensing electrodes 310, and those skilled in the art may set it as needed. In addition, the touch sensing electrode 30 is electrically connected to the touch sensing signal terminal RX of the corresponding first micro-driving chip 210, that is, the first micro-driving chip 210 can not only provide data signals and scanning signals for the corresponding multiple micro-light-emitting devices 10 to drive the multiple micro-light-emitting devices 10 to emit light, but also receive the touch sensing signal of the corresponding touch sensing electrode 30, and the first micro-driving chip 210 processes the received touch sensing signal to generate a subsequent touch output signal, without the need for the main chip to receive and process the touch sensing signals of the multiple touch sensing electrodes 30 respectively, thereby greatly reducing the power consumption of the main chip. In addition, for a display panel with multiple micro-driving chips 20, the power consumption of each micro-driving chip 20 is relatively small, so that the power consumption of the entire display panel is also relatively small.

[0028] It can be understood that the above embodiment is illustratively described by taking the example that the touch sensing electrode 30 surrounds at least a part of the first micro-driving chip 210, but it is not limited to this. In other embodiments, the touch sensing electrode 30 can surround the touch driving electrode. That is to say, the corresponding arrangement of the touch sensing electrode 30 and the first micro-driving chip 210 in the embodiment of the present invention is not the correspondence of the position relationship, but the correspondence of the signal transmission relationship, that is, the first micro-driving chip 210 receives the touch sensing signal of the corresponding touch sensing electrode 30, but the vertical projection of the touch sensing electrode 30 can not only surround the vertical projection of the first micro-driving chip 210 corresponding to it, but also surround the vertical projection of other devices such as the touch driving electrode.

[0029] It should also be noted that the above embodiment is illustratively described by taking the vertical projection of the touch sensing electrode 30 as a field shape or a nearly field shape as an example, but is not limited to this. In other embodiments, the vertical projection of the touch sensing electrode 30 can also be a circular ring or a nearly circular ring, and those skilled in the art can set it as needed.

[0030] In summary, the embodiment of the present invention includes a first micro-driving chip by setting a micro-driving chip, and the first micro-driving chip includes a touch sensing signal terminal. At least one first micro-driving chip is correspondingly arranged with at least one touch sensing electrode, and the touch sensing electrode is electrically connected to the touch sensing signal terminal of the corresponding first micro-driving chip. In this way, the first micro-driving chip can not only provide a driving signal for the corresponding electrically connected micro-light-emitting device, but also receive a touch sensing signal from the correspondingly arranged touch sensing electrode. In this way, the main chip is not required to receive the touch sensing signal from the touch sensing electrode and perform relevant processing on the touch sensing signal, which greatly reduces the power consumption of the main chip, thereby reducing the power consumption of the display panel.

[0031] Optionally, based on the above embodiment, continue to refer to Figure 1 and Figure 2 The display panel further includes a plurality of touch driving electrodes 40. At least one touch driving electrode 40 is disposed corresponding to at least one first micro driving chip 210. The first micro driving chip 210 further includes a touch driving signal terminal TX, and the touch driving signal terminal TX is electrically connected to the touch driving electrode 40. The first micro driving chip 210 is used to determine touch information according to a touch driving signal in the touch driving signal terminal TX, a touch sensing signal in the touch sensing signal terminal RX, and a reference sensing signal.

[0032] Specifically, Figure 1 and Figure 2 As shown, the display panel further includes a touch driving electrode 40, at least one touch driving electrode 40 is arranged corresponding to at least one first micro driving chip 210, that is, along the thickness direction of the display panel, the touch driving electrode 40 and the first micro driving chip 210 at least partially overlap, for example, Figure 1In the illustrated embodiment, a plurality of touch driving electrodes 40 are arranged correspondingly to one first micro driving chip 210 as an example for description, that is, along the thickness direction of the display panel, the plurality of touch driving electrodes 40 and one first micro driving chip 210 at least partially overlap. In other embodiments, one first micro driving chip 210 may also be arranged correspondingly to one touch driving electrode 40, or a plurality of first micro driving chips 210 may be arranged correspondingly to one touch driving electrode 40, or a plurality of first micro driving chips 210 may be arranged correspondingly to a plurality of touch driving electrodes 40, and those skilled in the art may arrange as required. In addition, the first micro-driving chip 210 further includes a touch driving signal terminal TX, and the touch driving signal terminal TX is electrically connected to the corresponding touch driving electrode 40. The first micro-driving chip 210 or the main chip can provide a touch driving signal to the corresponding touch driving electrode 40 through the touch driving signal terminal TX, so that a mutual capacitance is formed between the touch sensing electrode 30 and the touch driving electrode 40. When there is a touch, the capacitance value of the mutual capacitance between the touch sensing electrode 30 and the touch driving electrode 40 at the touch position will change, and the touch sensing electrode 30 will send a changed touch sensing signal to the first micro-driving chip 210. The first micro-driving chip 210 determines whether the touch sensing electrode 30 is touched according to the touch sensing signal of the touch sensing signal terminal RX, the touch driving signal in the touch driving signal terminal TX, and the reference sensing signal. In this way, the main chip is not required to receive the touch sensing signal of the touch sensing electrode 30 and determine whether the touch sensing electrode 30 is touched according to the touch sensing signal, which greatly reduces the power consumption of the main chip, thereby reducing the power consumption of the display panel.

[0033] Based on the above embodiments, continue to refer to Figure 2 The first micro-driving chip 210 is used to send a touch driving signal to the corresponding touch driving electrode 40 through the touch driving signal terminal TX. Figure 2 As shown, on the basis of the above embodiment, the touch driving signal can be sent through the first micro-driving chip 210. That is, the touch driving signal is generated by the first micro-driving chip 210, and is sent to the corresponding electrically connected touch driving electrode 40 by the touch driving signal terminal TX of the first micro-driving chip 210. In this way, the main chip does not need to send the touch driving signal to the corresponding touch driving electrode 40, nor does it need to receive the touch sensing signal received by the touch sensing electrode 30, and it is not necessary for the main chip to determine the touch information according to the touch driving signal, the touch sensing signal and the reference sensing signal, that is, the touch position information and / or touch pressure information of the touch sensing electrode 30, thereby further reducing the power consumption of the main chip.

[0034] Optionally, in yet another embodiment, Figure 4 FIG. 1 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention. Figure 4The display panel further includes a plurality of touch scan signal lines 50. The touch scan signal lines 50 are electrically connected to the touch drive signal terminal TX and the touch drive electrode 40 respectively, and are used to transmit touch drive signals to the touch drive signal terminal TX and the touch drive electrode 40.

[0035] Specifically, Figure 4 As shown, the display panel further includes a plurality of touch scan signal lines 50, one end of the touch scan signal line 50 can be electrically connected to the gate drive circuit M of the display panel, and the gate drive circuit M is electrically connected to the main chip N, that is, Figure 4 In the illustrated embodiment, the main chip N provides a touch driving signal for the touch scanning signal line 50 through the gate driving circuit M. The other end of the touch scanning signal line 50 is electrically connected to the touch driving signal terminal TX and the touch driving electrode 40, respectively. That is, the touch scanning signal line 50 sends a touch driving signal to the touch driving signal terminal TX and the touch driving electrode 40. In the embodiment of the present invention, the main chip M sends a touch driving signal to the touch driving electrode 40, and the first micro-driving chip 210 receives the touch sensing signal of the touch sensing electrode 30, and the first micro-driving chip 210 generates touch information according to the touch sensing signal, the touch driving signal and the reference sensing signal, thereby reducing the power consumption of the main chip.

[0036] In yet another embodiment, Figure 5 FIG. 1 is a schematic diagram of the structure of another first micro-drive chip provided by an embodiment of the present invention. Figure 5In the illustrated embodiment, the display panel includes a plurality of display scan signal lines 60. Among them, the display scan signal lines 60 include a first display scan signal line 610. One end of the first display scan signal line 610 is electrically connected to the gate drive circuit M, and the gate drive circuit M is electrically connected to the main chip N, and then the main chip N provides a display scan signal for the first display scan signal line 610. The first micro-drive chip 210 also includes a first scan signal receiving terminal Scan1 and a first display signal output terminal OUT1. The other end of the first display scan signal line 610 is electrically connected to the first scan signal receiving terminal Scan1, and the first display signal output terminal OUT1 is electrically connected to the micro-light-emitting device 10, and then the first micro-drive chip 210 drives the corresponding electrically connected multiple micro-light-emitting devices 10 to emit light according to the display scan signal provided by the main chip N. On the basis of the above embodiment, the first scan signal receiving terminal Scan1 is multiplexed as the touch drive signal terminal TX, and the first display scan signal line 610 is multiplexed as the touch scan signal line 50. That is, part of the timing in the display scan signal provided by the main chip N is multiplexed as the touch drive signal. In this way, the main chip N does not need to send the touch drive signal separately. Instead, part of the timing in the display scan signal is multiplexed as the touch drive signal. This improves the timing utilization rate in the display scan signal and reduces the power consumption of the main chip N, thereby reducing the power consumption of the display panel. In addition, since there is no need to additionally set up the touch scan signal line 50, the wiring difficulty of the routing can be reduced.

[0037] Optionally, based on the above embodiment, Figure 6 A timing diagram of a display panel provided by an embodiment of the present invention. Figure 5 and Figure 6, the working phase of the first display scan signal line 610 includes a display phase S1 and a touch phase S2. In the display phase S1, the first display scan signal line 610 provides a display scan signal to the corresponding electrically connected first micro-driving chip 210, so that the first micro-driving chip 210 drives the corresponding electrically connected micro-light-emitting device 10 to emit light. A plurality of micro-light-emitting devices 10 are arranged in an array, and the timing after the first display scan signal line 610 provides a display scan signal to all the micro-light-emitting devices 10 in the same row and before providing a display scan signal to the multiple micro-light-emitting devices 10 in the next row is an idle timing, and then the idle timing can be multiplexed as a touch drive signal, that is, the stage after the display scan signal is provided to the micro-light-emitting devices 10 in the current row and before the display scan signal is provided to the micro-light-emitting devices 10 in the next row is the touch phase S2. The first display scanning signal line 60 is electrically connected to the first micro-driving chip 210 and the touch driving electrode 40 respectively, and then in the touch stage S2, the first display scanning signal line 60 provides a touch driving signal to the corresponding electrically connected touch driving electrode 40 and the first micro-driving chip 210, so that the first micro-driving chip 210 determines the touch information according to the touch driving signal, the touch sensing information and the reference sensing signal. In this way, while meeting the touch driving requirements of the touch driving electrode 40 and ensuring the normal light emission of the micro-light emitting device 10, the power consumption of the main chip N is reduced.

[0038] Optionally, in yet another embodiment, Figure 7 FIG. 1 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention. Figure 7 , the first micro-drive chip 210 also includes a touch information output terminal OUT2, and the display panel also includes a main chip N and a touch information output line 70. The touch information output line 70 connects the touch information output terminal OUT with the main chip N. Specifically, after receiving the touch sensing signal of the touch sensing electrode 30, the first micro-drive chip 210 generates touch information according to the touch sensing signal, the touch driving chip and the reference sensing signal. The touch information includes the touch position signal and / or touch pressure information of the touch sensing electrode 30. The touch information is output through the touch information output terminal OUT2 of the first micro-drive chip 210, and is transmitted to the main chip N through the touch information output line 70, so that the main chip N performs relevant operations according to the touch information, thereby ensuring that the display panel can realize the touch function, and because the touch information is generated by the first micro-drive chip 210, the power consumption of the main chip N is reduced.

[0039] Optionally, based on the above embodiment, Figure 8 FIG. 1 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention. Figure 8, the display panel includes a plurality of data signal lines 80. The data signal lines 80 include a first data signal line 810. One end of the first data signal line 810 is electrically connected to the main chip N, and then the main chip N provides a display data signal to the first data signal line 810. The first micro-driving chip 210 also includes a first data signal receiving terminal DATA1 and a first display signal output terminal OUT1. The other end of the first data signal line 810 is electrically connected to the first data signal receiving terminal DATA1. In addition, the first display scan signal line 610 is electrically connected to the first scan signal receiving terminal Scan1, and then the first micro-driving chip 210 outputs the display scan signal provided by the first display scan signal line 610 and the display data signal provided by the first data signal line 810 to the corresponding electrically connected micro-light-emitting device 10 through the first display signal output terminal OUT1, so as to drive the plurality of micro-light-emitting devices 10 to emit light. On the basis of the above embodiment, the first data signal receiving terminal DATA1 is multiplexed as the touch information output terminal OUT2, and the first data signal line 810 is multiplexed as the touch information output line 70. That is, the first data signal line 810 is used to provide a data signal for the first micro-driving chip 210, and is also used to transmit the touch information generated by the first micro-driving chip 210 to the main chip N. In this way, on the basis of reducing the power consumption of the main chip N, since there is no need to additionally set up a touch information output line 70, the wiring difficulty of the wiring can be reduced.

[0040] Optionally, based on the above embodiment, continue to refer to Figure 6 , the working phase of the first data signal line 810 includes a display phase S1 and a touch phase S2. In the display phase S1, the first data signal line 810 provides a display data signal to the corresponding electrically connected first micro-driving chip 210, so that the first micro-driving chip 210 drives the corresponding micro-light-emitting device 10 to emit light. The plurality of micro-light-emitting devices 10 are arranged in an array, and the timing after the display data signal is written to the plurality of micro-light-emitting devices 10 in the same row through the first data signal line 810 and before the display data signal is written to the plurality of micro-light-emitting devices 10 in the next row is an idle timing, and then the first micro-driving chip 210 generates touch information according to the touch sensing signal, the touch driving signal and the reference sensing signal in the idle timing, and transmits the touch information to the main chip N through the first data signal line 810. That is, in the touch phase S2, the first data signal line 810 receives the touch information output by the first micro-driving chip 210, and transmits the touch information to the main chip N. In this way, the power consumption of the main chip N is reduced while meeting the touch information transmission requirements and ensuring the normal light emission of the micro-light emitting device 10 .

[0041] Optionally, based on the above embodiment, Fig. 9 is a functional structure diagram of a first micro-drive chip provided by an embodiment of the present invention. Figure 8 and Fig. 9, the first micro-drive chip 210 also includes a comparison module 211 and a touch signal processing module 212. In addition, the first micro-drive chip 210 also includes a first scan signal receiving terminal Scan1 and a first data signal receiving terminal DATA1. In the display stage, the comparison module 211 is electrically connected to the first scan signal receiving terminal Scan1 and the first data signal receiving terminal DATA1, respectively, and is used to provide a light-emitting control signal according to the comparison between the number of pulses of the display scan signal in the first scan signal receiving terminal Scan1 and the digital data signal of the display data signal in the first data signal receiving terminal DATA1. Among them, the number of pulses can be the number of rising edges or falling edges in the display scan signal, and the digital data signal of the display data signal is a specific preset value. If the number of pulses of the display scan signal does not meet the digital data signal of the display data signal, the micro-light-emitting device 10 is controlled to emit light all the time. If the number of pulses of the display scan signal is greater than or equal to the digital data signal of the display data signal, the micro-light-emitting device 10 is controlled to stop emitting light. In the touch stage, the touch signal processing module 212 is electrically connected to the touch sensing signal terminal RX, and is used to determine the touch information according to the touch driving signal, the touch sensing signal and the reference sensing signal, and output the touch information through the touch information output terminal OUT2. Specifically, a mutual capacitance is formed between the touch sensing signal and the touch driving signal. When a touch occurs, the mutual capacitance between the touch sensing signal and the touch driving signal changes. The value of the mutual capacitance change is compared with the reference sensing signal. If the value of the mutual capacitance change is greater than the value of the reference sensing signal, it indicates that a touch has occurred, and then the touch information of the touch sensing electrode 30 is determined. If the value of the mutual capacitance change is less than the value of the reference sensing signal, it indicates that no touch has occurred. In this way, by setting the first micro-drive chip 210 to include a comparison module 211 and a touch signal processing module 212, it is ensured that the first micro-drive chip 210 can normally drive the micro-luminescent element 10 to emit light and generate touch information.

[0042] Optionally, based on the above embodiment, Fig.10 FIG. 1 is a partial structural diagram of a first micro-drive chip provided by an embodiment of the present invention. Figure 2 and Fig.10, the comparison module 211 includes a controller U11. The touch signal processing module 212 includes a first transmission gate U21, a second transmission gate U22, a first operational amplifier U23, a second operational amplifier U24 and a first capacitor C1. The first input terminal of the first operational amplifier U23 is electrically connected to the corresponding touch sensing electrode 30, the second input terminal of the first operational amplifier U23 is electrically connected to the ground terminal GND through the first transmission gate U21, and the output terminal of the first operational amplifier U23 is electrically connected to the second input terminal of the second operational amplifier U24. The first capacitor C1 is arranged between the second input terminal of the second operational amplifier U24 and the output terminal of the first operational amplifier U23. The first input terminal of the second operational amplifier U24 is electrically connected to the preset value input terminal of the controller U11, and the output terminal of the second operational amplifier U24 is electrically connected to the touch information output terminal OUT2 through the second transmission gate U22. The control terminals of the first transmission gate U21 and the second transmission gate U22 are electrically connected to the controller U11.

[0043] Specifically, the control end of the first transmission gate U21 is electrically connected to the controller U11, the first input end of the first operational amplifier U23 is electrically connected to the touch sensing signal end RX (touch sensing electrode 30) of the first micro-driving chip 210, the second input end of the first operational amplifier U23 is electrically connected to the ground end GND through the first transmission gate U21, and the output end of the first operational amplifier U23 is electrically connected to the second input end of the second operational amplifier U24. In this way, when the controller U11 provides a control signal to the control end of the first transmission gate U21, the first transmission gate U21 is turned on, and the touch sensing signal fed back by the touch sensing electrode 30 is received through the first operational amplifier U23. When a touch occurs, the first operational amplifier U23 transmits the changed touch sensing signal (the change in mutual capacitance is mainly the change in the touch sensing signal) to the second input end of the second operational amplifier U24. The first input terminal of the second operational amplifier U24 is electrically connected to the preset value input terminal of the controller, and then the second operational amplifier U24 compares the reference sensing signal of the preset value input terminal with the touch sensing signal, and outputs the touch information finally generated through the touch information output terminal OUT2. In this way, the touch information is generated by two operational amplifiers and two transmission gates, and the structure of the first micro-driving chip 210 is simple on the basis of realizing the touch function of the first micro-driving chip 210.

[0044] Optionally, based on the above embodiment, continue to refer to Figure 8 and Fig. 9, the comparison module 211 also includes a controller U11, a counter U12, a comparator U13 and a register U14. Specifically, the display panel also includes a first display scan signal line 610 and a first data signal line 810. The first end of the counter U12 is electrically connected to the first display scan signal line 610, that is, the first end of the counter U12 is electrically connected to the first scan signal receiving end Scan1 of the first micro-drive chip 210, and the number of rising edges or falling edges in the display scan signal is counted by the counter U12. The first end of the register U14 is electrically connected to the first data signal line 810, that is, the first end of the register U14 is electrically connected to the first data signal receiving end DATA1 of the first micro-driving chip 210, and the value of the digital data signal in the display data signal is stored through the register U14. The second end of the counter U12 is electrically connected to the first input end of the comparator U13, and the second end of the register U14 is electrically connected to the second input end of the comparator U13. The output end of the comparator U13 is electrically connected to the micro-light-emitting element 10. Then, in the display stage, the register U14 provides a light-emitting control signal according to the number of pulses of the display scanning signal in the first display scanning signal line 610 and the comparison of the digital data signal in the first data signal line 810. Exemplarily, if the number of pulses of the display scanning signal does not meet the digital data signal of the display data signal, the micro-light-emitting device 10 is controlled to emit light all the time, and if the number of pulses of the display scanning signal is greater than or equal to the digital data signal of the display data signal, the micro-light-emitting device 10 is controlled to stop emitting light.

[0045] Optionally, based on the above embodiment, continue to refer to Figure 1 , the size of the touch sensing electrode 30 is greater than the sum of the sizes of the multiple micro light-emitting devices 10 driven by the corresponding first micro driving chip 210. The micro driving chip 20 also includes a second micro driving chip 220, and the second micro driving chip 220 is insulated from the touch sensing electrode 30. The first micro driving chip 210 or the second micro driving chip 220 is arranged corresponding to at least one micro light-emitting device 10, and is used to drive the multiple micro light-emitting devices 10 to emit light. The number of the first micro driving chips 210 is less than or equal to the number of the second micro driving chips 220.

[0046] Specifically, the first micro-driving chip 210 is electrically connected to the touch sensing electrode 30 and is correspondingly arranged with at least one micro-light emitting device 10. That is, the first micro-driving chip 210 is not only used to implement the touch function, but also used to drive the micro-light emitting device 10 to emit light. The second micro-driving chip 220 is insulated from the touch sensing electrode 30 and is correspondingly arranged with at least one micro-light emitting device 10. That is, the second micro-driving chip 220 is only used to drive the micro-light emitting device 10 to emit light. Since the size of the touch sensing electrode 30 is larger than the sum of the sizes of the multiple micro-light emitting devices 10 driven by the corresponding first micro-driving chip 210, that is, the coverage area of the touch sensing electrode 30 in the thickness direction of the display panel is larger than the coverage area of the multiple micro-light emitting devices 10 driven by the corresponding first micro-driving chip 210 in the thickness direction of the display panel. As Figure 1 shown, if the touch sensing electrode 30 is in a cross shape, then the coverage area of the touch sensing electrode 30 in the thickness direction of the display panel can be the area occupied by the cross shape (including the grid and the space inside the grid), and this coverage area is larger than the occupied area of the corresponding three micro-light emitting devices 10. Therefore, if the number of the first micro-driving chips 210 is greater than the number of the second micro-driving chips 220, it will cause the design space of the touch sensing electrode 30 to be limited. For this reason, by setting the number of the first micro-driving chips 210 to be less than or equal to the number of the second micro-driving chips 220, on the basis of reducing the power consumption of the main chip, it is ensured that the touch sensing electrode 30 has sufficient design space, making the setting method of the touch sensing electrode 30 simple.

[0047] Optionally, on the basis of the above embodiments, continue to refer to Figure 1 , along the first direction X, there is at least one second micro-driving chip 220 between two adjacent first micro-driving chips 210, and / or, along the second direction Y, there is at least one second micro-driving chip 220 between two adjacent first micro-driving chips 210. The first direction X and the second direction Y intersect.

[0048] Specifically, as Figure 1 shown, the first direction X can be the row direction of the multiple micro-light emitting devices 10, and the second direction Y can be the column direction of the micro-light emitting devices 10. As Figure 1In the illustrated embodiment, along the first direction X, one second micro-driving chip 220 is included between two adjacent first micro-driving chips 210, and along the second direction Y, one second micro-driving chip 220 is included between two adjacent first micro-driving chips 210, that is, three second micro-driving chips 220 and one first micro-driving chip 210 form a minimum repeating unit, and the occupied area of ​​the touch sensing electrode 30 electrically connected to the corresponding first micro-driving chip covers the corresponding minimum repeating unit. In this way, it is ensured that the touch sensing electrode 30 has sufficient design space, so that the setting method of the touch sensing electrode 30 is simple. It should be noted that the above embodiment is exemplified by taking the example that along the first direction X, one second micro-driving chip 220 is included between two adjacent first micro-driving chips 210, and along the second direction Y, one second micro-driving chip 220 is included between two adjacent first micro-driving chips 210 as an example, but it is not limited to this. In other embodiments, it can also be set that along the first direction X, at least one second micro-driving chip 220 is included between two adjacent first micro-driving chips 210, or along the second direction Y, at least one second micro-driving chip 220 is included between two adjacent first micro-driving chips 210. Those skilled in the art can set it according to needs.

[0049] Optionally, based on the above embodiment, Fig.11 FIG. 1 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention. Fig.11 , the display panel includes a plurality of data signal lines 80. The data signal lines 80 include a plurality of first data signal lines 810 and a plurality of second data signal lines 820. The first micro-driving chip 210 also includes a touch information output terminal OUT2 and a first data signal receiving terminal DATA1, wherein the first data signal receiving terminal DATA1 multiplexes the touch information output terminal OUT2. The first data signal line 810 is connected to the touch information output terminal OUT2 of the first micro-driving chip 210. That is, the first data signal line 810 is used to transmit the display data signal to the first data signal receiving terminal DATA1 in the display stage, and is also used to transmit the touch information to the main chip in the touch stage. The second micro-driving chip 220 includes a second data signal receiving terminal DATA2 and a second display signal output terminal OUT3, the second data signal line 820 is only electrically connected to the second data signal receiving terminal DATA2, and the touch information output terminal OUT2 is electrically connected to the micro-light-emitting device 10, that is, the second data signal line 820 is only used to transmit the display data signal to the second data signal receiving terminal DATA2 of the second micro-driving chip 220 in the display stage. Since the first data signal line 810 not only transmits the display data signal but also transmits the touch information, the line width of the first data signal line 810 is set to be larger than the line width of the second data signal line 820 to reduce the resistance of the first data signal line 810, thereby ensuring the transmission efficiency of the first data signal line 810.

[0050] Optionally, based on the above embodiment, Fig.12 FIG. 1 is a simplified structural diagram of another first micro-driving chip provided by an embodiment of the present invention. Fig.12 , the display panel includes a plurality of display scan signal lines 60, and the display scan signal lines 60 include a plurality of first display scan signal lines 610 and a plurality of second display scan signal lines 620. In addition, the display panel also includes a plurality of touch drive electrodes 40, and the first micro drive chip 210 also includes a touch drive signal terminal TX and a first scan signal receiving terminal Scan1. Among them, the first scan signal receiving terminal Scan1 is multiplexed as the touch drive signal terminal TX. The first display scan signal line 610 is electrically connected to the touch drive signal terminal TX (the first scan signal receiving terminal Scan1) and the plurality of touch drive electrodes 40, respectively, that is, the first display scan signal line 610 is used for transmitting the display scan signal to the first scan signal receiving terminal Scan1 in the display stage, and is also used for outputting the touch drive signal to the touch drive signal terminal TX (the first scan signal receiving terminal Scan1) and the touch drive electrode 40 in the touch stage. The second micro-driving chip 220 includes a second scan signal receiving terminal Scan2 and a second display signal output terminal OUT3, and the second display scan signal line 620 is only electrically connected to the second scan signal receiving terminal Scan2, and the second display signal output terminal OUT3 is electrically connected to the micro-light-emitting device 10, that is, the second display scan signal line 620 is only used to transmit the display scan signal to the second scan signal receiving terminal Scan2 during the display stage. Since the first display scan signal line 610 not only transmits the display data signal but also transmits the touch drive signal, the line width of the first display scan signal line 610 is set to be larger than the line width of the second display scan signal line 620 to reduce the resistance of the first display scan signal line 610, thereby ensuring the transmission efficiency of the first display scan signal line 610.

[0051] Based on the same inventive concept, an embodiment of the present invention further provides a display device. Fig.13 FIG. 1 is a schematic diagram of a display device provided by an embodiment of the present invention. Fig.13 As shown, the display device includes the display panel 01 in the above embodiment. The display device includes the display panel 01 of any embodiment of the present invention. Therefore, the display device provided by the embodiment of the present invention has the corresponding beneficial effects of the display panel 01 provided by the embodiment of the present invention, which will not be repeated here. Exemplarily, the display device can be an electronic device such as a mobile phone, a computer, a smart wearable device (for example, a smart watch), and a vehicle-mounted display device, which is not limited in the embodiment of the present invention.

[0052] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, combinations and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A display panel, characterized in that: include: A plurality of micro light-emitting devices, a plurality of micro drive chips and a plurality of touch sensing electrodes; The micro-driving chip is arranged corresponding to the micro-light-emitting device, and is used to drive the micro-light-emitting device to emit light; The micro-driving chip includes a first micro-driving chip, at least one touch sensing electrode is arranged corresponding to at least one of the first micro-driving chips, the first micro-driving chip includes a touch sensing signal terminal, and the touch sensing signal terminal is electrically connected to the touch sensing electrode; the first micro-driving chip is used to receive the touch sensing signal of the correspondingly arranged touch sensing electrode.

2. The display panel according to claim 1, characterized in that: The display panel also includes a plurality of touch driving electrodes; At least one of the touch driving electrodes is arranged correspondingly to at least one of the first micro-driving chips; The first micro-driving chip further includes a touch driving signal terminal, and the touch driving signal terminal is electrically connected to the touch driving electrode; The first micro-driving chip is used to determine touch information according to the touch driving signal in the touch driving signal terminal, the touch sensing signal in the touch sensing signal terminal, and a reference sensing signal.

3. The display panel according to claim 2, characterized in that: The first micro-driving chip is used to send a touch driving signal to the corresponding touch driving electrode through the touch driving signal terminal.

4. The display panel according to claim 2, characterized in that: The display panel also includes a plurality of touch scanning signal lines; The touch scan signal lines are electrically connected to the touch drive signal terminals and the touch drive electrodes, respectively, and are used to transmit touch drive signals to the touch drive signal terminals and the touch drive electrodes.

5. The display panel according to claim 4, characterized in that: The display panel further comprises a plurality of first display scanning signal lines; The first micro-driving chip further includes a first scanning signal receiving end and a first display signal output end, the first scanning signal receiving end is electrically connected to the first display scanning signal line, and the first display signal output end is electrically connected to the micro-light emitting device; The first scan signal receiving end is multiplexed as the touch driving signal end, and the first display scan signal line is multiplexed as the touch scan signal line.

6. The display panel according to claim 5, characterized in that: The working phase of the first display scanning signal line includes a display phase and a touch phase; In the display stage, the first display scanning signal line provides a display scanning signal to the first micro-driving chip electrically connected thereto, so that the first micro-driving chip drives the corresponding micro-light-emitting device to emit light; In the touch stage, the first display scanning signal line provides a touch driving signal to the corresponding electrically connected touch driving electrodes and the first micro driving chip, so that the first micro driving chip determines touch information according to the touch driving signal, the touch sensing information and the reference sensing signal.

7. The display panel according to claim 2, characterized in that: The first micro-driving chip further includes a touch information output terminal, and the display panel further includes a main chip and a touch information output line; The touch information output line connects the touch information output terminal and the main chip.

8. The display panel according to claim 7, characterized in that: The display panel further comprises a plurality of first data signal lines; The first micro-driving chip further includes a first data signal receiving end and a first display signal output end, the first data signal receiving end is electrically connected to the first data signal line, and the first display signal output end is electrically connected to the micro-light emitting device; The first data signal receiving end is multiplexed as the touch information output end, and the first data signal line is multiplexed as the touch information output line.

9. The display panel according to claim 8, characterized in that: The working phase of the first data signal line includes a display phase and a touch phase; In the display stage, the first data signal line provides a display data signal to the first micro-driving chip electrically connected thereto, so that the first micro-driving chip drives the corresponding micro-light-emitting device to emit light; In the touch control stage, the first data signal line receives touch control information output by the first micro-driving chip, and transmits the touch control information to the main chip.

10. The display panel according to claim 2, characterized in that: The first micro-driving chip also includes a touch signal processing module; In the touch control stage, the touch control signal processing module is electrically connected to the touch control sensing signal terminal, and is used to determine touch control information according to the touch control driving signal, the touch control sensing signal and the reference sensing signal.

11. The display panel according to claim 10, characterized in that: The first micro-drive chip also includes a controller; The touch signal processing module includes a first transmission gate, a second transmission gate, a first operational amplifier, a second operational amplifier and a first capacitor; A first input terminal of the first operational amplifier is electrically connected to the corresponding touch sensing electrode, a second input terminal of the first operational amplifier is electrically connected to a ground terminal through the first transmission gate, and an output terminal of the first operational amplifier is electrically connected to a second input terminal of the second operational amplifier; The first capacitor is arranged between the second input terminal of the second operational amplifier and the output terminal of the first operational amplifier; The first input terminal of the second operational amplifier is electrically connected to the preset value input terminal of the controller, and the output terminal of the second operational amplifier is electrically connected to the touch output signal terminal through the second transmission gate; The control ends of the first transmission gate and the second transmission gate are electrically connected to the controller.

12. The display panel according to claim 10, characterized in that: The first micro-drive chip also includes a counter, a comparator and a register; The display panel further includes a first display scanning signal line and a first data signal line; The first end of the counter is electrically connected to the first display scanning signal line, the second end of the counter is electrically connected to the first input end of the comparator, the first end of the register is electrically connected to the first data signal line, the second end of the register is electrically connected to the second input end of the comparator, and the output end of the comparator is electrically connected to the micro-luminescent element; In the display stage, the register provides a light-emitting control signal according to the comparison between the number of pulses of the display scanning signal in the first display scanning signal line and the digital data signal in the first data signal line.

13. The display panel according to claim 1, characterized in that: The micro-driving chip further includes a second micro-driving chip, and the second micro-driving chip is insulated from the touch sensing electrode; The first micro-driving chip or the second micro-driving chip is disposed corresponding to at least one of the micro-light-emitting devices, and is used to drive the plurality of micro-light-emitting devices to emit light; The number of the first micro-driving chips is less than or equal to the number of the second micro-driving chips.

14. The display panel according to claim 13, characterized in that: The display panel further includes a plurality of first data signal lines and a plurality of second data signal lines; The first micro-driving chip further includes a touch information output terminal, and the first data signal line is connected to the touch information output terminal; The second micro-driving chip comprises a second data signal receiving terminal and a second display signal output terminal, the second data signal receiving terminal is electrically connected to the second data signal line, and the second display signal output terminal is electrically connected to the micro-light-emitting device; The line width of the first data signal line is greater than the line width of the second data signal line.

15. The display panel according to claim 13, characterized in that: The display panel further includes a plurality of first display scanning signal lines, a plurality of second display scanning signal lines and a plurality of touch driving electrodes; the first micro driving chip further includes a touch driving signal terminal; The first display scanning signal line is electrically connected to the touch driving signal terminal of the first micro driving chip and the touch driving electrode respectively, and is used to output a touch driving signal to the touch driving signal terminal and the touch driving electrode; The second micro-driving chip comprises a second scanning signal receiving end and a second display signal output end, the second scanning signal receiving end is electrically connected to the second display scanning signal line, and the second display signal output end is electrically connected to the micro-light emitting device; The line width of the first display scan signal line is greater than the line width of the second display scan signal line.

16. The display panel according to claim 13, characterized in that: Along the first direction, at least one of the second micro-driving chips is included between two adjacent first micro-driving chips; and / or, along the second direction, at least one of the second micro-driving chips is included between two adjacent first micro-driving chips; the first direction and the second direction intersect.

17. A display device, characterized in that: A display panel comprising any one of claims 1-16.

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