Display device

Abstract

The present application provides a display device, the display device includes: a touch circuit, the touch circuit is used to output a capacitive touch position signal and an electromagnetic touch position signal; a touch control circuit, the touch control circuit is used to detect the capacitive touch position signal and the electromagnetic touch position signal; wherein, when the touch control circuit receives the electromagnetic touch position signal in a certain frame display screen scanning cycle, the touch control circuit stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal in the subsequent display screen scanning cycle of the first preset number of frames. In the present application, after receiving the electromagnetic touch position signal, the capacitive touch position signal is stopped from being detected and the electromagnetic touch position signal is continuously detected, so that the original capacitive touch detection time can be used for electromagnetic touch detection, which is beneficial to increase the scanning frequency of the electromagnetic touch position signal, and finally avoid the phenomenon of scanning breakpoints in the electromagnetic touch process.

Description

Technical Field

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

[0002] At present, display panels with touch functions can be divided into capacitive touch and electromagnetic touch according to the touch principle. Among them, the principle of capacitive touch is: when a finger or stylus touches the display panel, the capacitance at the touch position changes. By scanning the capacitance values ​​corresponding to all areas of the display panel (such as pixels), it can be confirmed that the area with the capacitance change is the touch position. The principle of electromagnetic touch is similar to the principle of capacitive touch. When the electromagnetic stylus touches the display panel, the induction coil at the touch position generates an induced current. By scanning the current changes of the corresponding induction coils in all areas of the display panel, it can be confirmed that the area corresponding to the induction coil generating the induced current is the touch position.

[0003] Since capacitive touch has the characteristic of being able to touch directly with fingers, and electromagnetic touch has the characteristic of accurate touch position positioning and can be applied to handwriting fields such as professional drawing and professional design, mid-to-high-end display panels usually have both capacitive touch and electromagnetic touch functions. In related technologies, since display panels with capacitive touch and electromagnetic touch functions need to scan capacitive touch signals and electromagnetic touch signals, in order to reduce the mutual interference between scanning capacitive touch signals and electromagnetic touch signals, it is usually necessary to scan the capacitive touch signals and electromagnetic touch signals in different time periods, which leads to a reduction in the electromagnetic touch scanning frequency, resulting in the problem of breakpoints being prone to occur in the electromagnetic touch process. Summary of the invention

[0004] The present application provides a display device, aiming to solve the technical problem of low scanning frequency of electromagnetic touch signals of current display devices.

[0005] In a first aspect, the present application provides a display device, comprising:

[0006] A touch control circuit, the touch control circuit is used to output a capacitive touch position signal and an electromagnetic touch position signal;

[0007] A touch control circuit, the touch control circuit is used to detect capacitive touch position signals and electromagnetic touch position signals;

[0008] When the touch control circuit receives the electromagnetic touch position signal in a display frame scanning cycle, the touch control circuit stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal in subsequent display frame scanning cycles of a first preset number of frames.

[0009] In some embodiments, after the touch control circuit receives the capacitive touch position signal in a certain display frame scanning cycle, the touch control circuit stops detecting the electromagnetic touch position signal and continues detecting the capacitive touch position signal in a subsequent second preset number of display frame scanning cycles.

[0010] In some embodiments, the touch control circuit has a pre-scanning working state and an electromagnetic scanning working state;

[0011] When the touch control circuit is in the pre-scanning working state, the touch control circuit detects at least one capacitive touch position signal and at least one electromagnetic touch position signal, and when the touch control circuit receives one electromagnetic touch position signal, the touch control circuit switches to the electromagnetic scanning working state;

[0012] When the touch control circuit is in the electromagnetic scanning working state, the touch control circuit stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal in a subsequent display image scanning period of a first preset number of frames.

[0013] In some embodiments, the touch control circuit also has a capacitive scanning working state;

[0014] After the touch control circuit receives a capacitive touch position signal once in the pre-scanning working state, the touch control circuit switches to the capacitive scanning working state;

[0015] When the touch control circuit is in the capacitive scanning working state, the touch control circuit stops detecting the electromagnetic touch position signal and continues detecting the capacitive touch position signal in a subsequent display image scanning period of a second preset number of frames.

[0016] In some embodiments, when the touch control circuit is in a pre-scanning working state, the touch control circuit detects a capacitive touch position signal in an N-th frame display image scanning period, and detects an electromagnetic touch position signal in an M-th frame display image scanning period, where one of M and N is an odd number and the other is an even number; or

[0017] When the touch control circuit is in the pre-scanning working state, the touch control circuit detects at least one capacitive touch position signal and at least one electromagnetic touch position signal within a same display frame scanning period.

[0018] In some embodiments, each display frame scanning period includes a display time and a non-display time;

[0019] When the touch control circuit is in the pre-scanning working state, the touch control circuit detects the capacitive touch position signal during the non-display time of the Nth frame display picture scanning cycle, and detects the electromagnetic touch position signal during the non-display time of the Mth frame display picture scanning cycle.

[0020] In some embodiments, when the touch control circuit is in the electromagnetic scanning working state, the touch control circuit detects the electromagnetic touch position signal during the non-display time of each display frame scanning cycle.

[0021] In some embodiments, the touch circuit includes a capacitive touch circuit and an electromagnetic touch circuit;

[0022] The capacitive touch control circuit is used to output a capacitive touch position signal based on the capacitive scanning signal, and the electromagnetic touch control circuit is used to output an electromagnetic touch position signal based on the electromagnetic scanning signal;

[0023] When the touch control circuit is in the pre-scanning working state, the touch control circuit inputs a capacitive scanning signal to the capacitive touch circuit and the electromagnetic touch circuit during the non-display time of the Nth frame display image scanning cycle.

[0024] In some embodiments, the capacitive touch circuit includes a plurality of first capacitor metal traces extending along a first direction, the plurality of first capacitor metal traces are arranged side by side and spaced apart along a second direction, and at least one first capacitor metal trace is electrically connected to the touch control circuit; and / or

[0025] The capacitive touch control circuit includes a plurality of second capacitor metal traces extending along the second direction, the plurality of second capacitor metal traces are arranged side by side and spaced apart along the first direction, and at least one second capacitor metal trace is electrically connected to the touch control circuit.

[0026] In some embodiments, the electromagnetic touch circuit has a plurality of first annular metal traces extending along a first direction and a second annular metal trace extending along a second direction;

[0027] A plurality of first annular metal traces are arranged side by side and spaced apart along the second direction, and a first end and a second end of at least one first annular metal trace are electrically connected to the touch control circuit;

[0028] A plurality of second annular metal traces are arranged side by side and spaced apart along the first direction, and a first end and a second end of at least one second annular metal trace are electrically connected to the touch control circuit.

[0029] In some embodiments, the touch control circuit includes a switching circuit;

[0030] A first end of at least one first annular metal trace and a first end of at least one second annular metal trace are electrically connected to the switching circuit;

[0031] The switching circuit is used to input a capacitance scanning signal to the first end of at least one first circular metal trace and the first end of at least one second circular metal trace, or to receive an electromagnetic touch position signal output by the first end of at least one first circular metal trace and the first end of at least one second circular metal trace.

[0032] In some embodiments, the touch control circuit includes a plurality of first metal traces extending along a first direction, a plurality of second metal traces extending along the first direction, and a first switch circuit;

[0033] A plurality of first metal routing lines are arranged side by side and spaced apart along the second direction, a plurality of second metal routing lines are arranged side by side along the second direction, and the first metal routing lines and the second metal routing lines are arranged alternately and spaced apart;

[0034] A first end of at least one first metal trace and at least one second metal trace is electrically connected to the first switch circuit, and a second end of at least one first metal trace and at least one second metal trace is electrically connected to the touch control circuit;

[0035] The first switch circuit is used to turn on / off the first end of at least one first metal wiring and at least one second metal wiring.

[0036] In some embodiments, the touch control circuit further includes a plurality of third metal traces extending along the second direction, a plurality of fourth metal traces extending along the second direction, and a second switch circuit;

[0037] A plurality of third metal routings are arranged side by side and spaced apart along the first direction, a plurality of fourth metal routings are arranged side by side along the first direction, and the third metal routings and the fourth metal routings are arranged alternately and spaced apart;

[0038] A first end of at least one third metal trace and at least one fourth metal trace is electrically connected to the second switch circuit, and a second end of at least one third metal trace and at least one fourth metal trace is electrically connected to the touch control circuit;

[0039] The second switch circuit is used to turn on / off the first end of at least one third metal wiring and at least one fourth metal wiring.

[0040] In some embodiments, the touch control circuit further includes a plurality of sub-annular metal traces extending along the second direction;

[0041] A plurality of sub-annular metal traces are arranged side by side and spaced apart along a first direction, and a first end and a second end of the sub-annular metal trace are electrically connected to the touch control circuit.

[0042] In some embodiments, the touch control circuit includes a switching circuit, and a first end of at least one sub-ring metal trace is electrically connected to the switching circuit;

[0043] The switching circuit is used to input a capacitance scanning signal to the first end of at least one sub-annular metal wiring, or to receive an electromagnetic touch position signal outputted from the first end of at least one sub-annular metal wiring.

[0044] In a second aspect, the present application provides a display device, including the display device as described in the first aspect.

[0045] In the present application, when the touch control circuit receives the electromagnetic touch position signal within a certain frame display screen scanning cycle, the touch circuit stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal within the subsequent display screen scanning cycle of a first preset number of frames (for example, 60 frames), so that the original capacitive touch scanning time can be used for electromagnetic touch scanning, which is beneficial to increase the scanning frequency of the electromagnetic touch position signal and ultimately avoid the phenomenon of scanning breakpoints in the electromagnetic touch process. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 is a schematic diagram of a display device provided in an embodiment of the present application;

[0048] Figure 2 is a schematic diagram of a touch control circuit scanning signal provided in an embodiment of the present application;

[0049] Figure 3 is another schematic diagram of a touch control circuit scanning signal provided in an embodiment of the present application;

[0050] Figure 4 is another schematic diagram of a touch control circuit scanning signal provided in an embodiment of the present application;

[0051] Figure 5 is another schematic diagram of a touch control circuit scanning signal provided in an embodiment of the present application;

[0052] Figure 6 is a schematic diagram of a display device provided in an embodiment of the present application;

[0053] Figure 7 is a schematic diagram of a capacitive touch circuit provided in an embodiment of the present application;

[0054] Figure 8 is a schematic diagram of an electromagnetic touch circuit provided in an embodiment of the present application;

[0055] Fig. 9 is another schematic diagram of a display device provided in an embodiment of the present application;

[0056] Fig.10is another schematic diagram of a display device provided in an embodiment of the present application;

[0057] Fig.11 is another schematic diagram of a display device provided in an embodiment of the present application;

[0058] Fig.12 is another schematic diagram of a display device provided in an embodiment of the present application;

[0059] Fig.13 is another schematic diagram of the display device provided in an embodiment of the present application.

[0060] Fig.14 It is a schematic diagram of an electronic device provided in an embodiment of the present application.

[0061] Wherein, 100 is a touch circuit, 10 is a capacitive touch circuit, 11 is a first capacitor metal wiring, 12 is a second capacitor metal wiring, 20 is an electromagnetic touch circuit, 21 is a first ring metal wiring, and 22 is a second ring metal wiring;

[0062] 101 a first metal routing, 102 a second metal routing, 103 a first switch circuit, 104 a third metal routing, 105 a fourth metal routing, 106 a second switch circuit, 107 a sub-ring metal routing;

[0063] 200 touch control circuit, 210 switching switch circuit;

[0064] 1000 display device, 2000 device body. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The technical solutions described below are used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0066] The embodiments of the present application provide a display device, which is described in detail below.

[0067] First, see Figure 1 , Figure 1 A schematic diagram of a display device in an embodiment of the present application is shown, wherein the display device includes:

[0068] A touch control circuit 100, the touch control circuit 100 is used to output a capacitive touch position signal and detect an electromagnetic touch position signal;

[0069] A touch control circuit 200, the touch control circuit 200 is used to detect a capacitive touch position signal and an electromagnetic touch position signal;

[0070] When the touch control circuit 200 receives the electromagnetic touch position signal in a display frame scanning cycle, the touch control circuit 200 stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal in subsequent display frame scanning cycles of a first preset number of frames.

[0071] Specifically, the touch circuit 100 can output a capacitive touch position signal and an electromagnetic touch position signal, so that the touch control circuit 200 receives the capacitive touch position signal and the electromagnetic touch position signal, and obtains the touch position according to the capacitive touch position signal and the electromagnetic touch position signal. In some embodiments of the present application, the capacitive touch position signal may refer to an electrical signal corresponding to a change in capacitance and voltage of a capacitor caused by a finger or a stylus pen approaching the capacitor in the touch circuit 100, such as a voltage signal after the capacitance changes, and the electromagnetic touch position signal may refer to an induced current signal generated by a coil in the touch circuit 100 due to the approach of an electromagnetic stylus pen.

[0072] Generally, the touch circuit 100 is evenly distributed and corresponds to the entire display screen, so that the entire display screen has a touch function. For example, the touch circuit 100 may include a plurality of capacitors arranged in a rectangular array and corresponding to the entire display screen. For another example, the touch circuit 100 may include a plurality of induction coils arranged in a rectangular array and corresponding to the entire display screen. In some embodiments of the present application, the touch circuit 100 may include a capacitive touch circuit 10 and an electromagnetic touch circuit 20. The capacitive touch circuit 10 may include a surface capacitive touch circuit or a transmissive capacitive touch circuit. The transmissive capacitive touch circuit may be a self-capacitive capacitive touch circuit or a mutual-capacitive capacitive touch circuit, etc. The electromagnetic touch circuit 20 may be an active electromagnetic touch circuit or a passive electromagnetic touch circuit.

[0073] In some embodiments of the present application, the touch circuit 100 can be integrated into the array substrate of the display panel, so that the array substrate of the display panel has both the pixel circuit and the touch circuit 100, which is beneficial to reduce the thickness of the display panel. In some embodiments of the present application, the touch circuit 100 can be integrated into the touch panel, and the touch panel is laminated to the display panel, so that the display device has a touch function.

[0074] The touch control circuit 200 can detect the capacitive touch position signal and the electromagnetic touch position signal to determine that the position of the capacitor corresponding to the capacitive touch position signal is the touch position, or determine that the position of the induction coil corresponding to the electromagnetic touch position signal is the touch position. In some embodiments of the present application, the touch control circuit 200 can detect the capacitive touch position signal and / or the electromagnetic touch position signal of the corresponding position of the entire display screen at one time, so as to quickly complete the touch scanning process of the entire display screen.

[0075] In some embodiments of the present application, the touch control circuit 200 can detect the capacitive touch position signals and electromagnetic touch position signals of the corresponding positions of the entire display screen in multiple times. For example, the touch control circuit 200 can scan the capacitive touch position signals and / or electromagnetic touch position signals at the corresponding circuit structures (such as capacitors or induction coils) row by row / column according to the pixel row and column arrangement; for another example, the touch control circuit 200 can first detect the capacitive touch position signals and / or electromagnetic touch position signals of the circuit structures corresponding to all pixel rows, and then detect the capacitive touch position signals and / or electromagnetic touch position signals of the circuit structures corresponding to all pixel columns.

[0076] In some embodiments of the present application, the touch control circuit 200 can detect the capacitive touch position signal and the electromagnetic touch position signal at the same time. In some embodiments of the present application, the touch control circuit 200 can detect the capacitive touch position signal and the electromagnetic touch position signal in different time periods. For example, the touch control circuit 200 can detect the capacitive touch position signal and the electromagnetic touch position signal alternately.

[0077] In the embodiment of the present application, when the touch control circuit 200 receives the electromagnetic touch position signal within a certain frame display screen scanning cycle, the touch circuit 100 stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal within the subsequent display screen scanning cycle of the first preset number of frames, so that the original capacitive touch scanning time can be used for electromagnetic touch scanning, which is beneficial to increase the scanning frequency of the electromagnetic touch position signal, and ultimately avoid the phenomenon of scanning breakpoints in the electromagnetic touch process.

[0078] As an example, see Figure 2 , Figure 2 A schematic diagram of the scanning signal of the touch control circuit 200 in the embodiment of the present application is shown, wherein the touch control circuit 200 detects the capacitive touch position signal through the capacitive scanning signal in the i-th frame and the i+2-th frame display screen scanning cycle, and the touch control circuit 200 detects the electromagnetic touch position signal through the electromagnetic scanning signal in the i+1-th frame and the i+3-th frame display screen scanning cycle, and detects and receives the electromagnetic touch position signal in the i+3-th frame display screen scanning cycle, so the electromagnetic touch position signal is detected in the subsequent i+4-th frame, i+5-th frame, i+6-th frame and i+7-th frame display screen scanning cycle. It can be seen that the scanning frequency of the electromagnetic touch position signal is doubled compared with the i-th frame, i+1-th frame, i+2-th frame and i+3-th frame display screen scanning cycle, which is beneficial to improve the scanning frequency of the electromagnetic touch position signal.

[0079] In some embodiments of the present application, after the touch control circuit 200 receives a capacitive touch position signal in a display frame scanning cycle, the touch control circuit 200 stops detecting the electromagnetic touch position signal and continues detecting the capacitive touch position signal in a subsequent display frame scanning cycle of a second preset number of frames.

[0080] As an example, see Figure 3 , Figure 3 A schematic diagram of the scanning signal of the touch control circuit 200 in the embodiment of the present application is shown, wherein the touch control circuit 200 detects the capacitive touch position signal through the capacitive scanning signal in the i+1th frame and the i+3th frame display screen scanning cycle, the touch control circuit 200 detects the electromagnetic touch position signal through the electromagnetic scanning signal in the i-th frame and the i+2th frame display screen scanning cycle, and detects and receives the capacitive touch position signal in the i+3th frame display screen scanning cycle, so the capacitive touch position signal is detected in the subsequent i+4th frame, i+5th frame, i+6th frame and i+7th frame display screen scanning cycle, thereby doubling the scanning frequency of the capacitive touch position signal, which is beneficial to improve the scanning frequency of the capacitive touch position signal and avoid the phenomenon of scanning breakpoints in the capacitive touch process.

[0081] It can be understood that the second preset number of frames and the first preset number of frames can be set by those skilled in the art according to actual needs. For example, the first preset number of frames or the second preset number of frames can be 30 frames, 60 frames, 72 frames or 144 frames, etc., and this application does not make any specific limitations here.

[0082] In some embodiments of the present application, the touch control circuit 200 has a pre-scanning working state and an electromagnetic scanning working state; when the touch control circuit 200 is in the pre-scanning working state, the touch control circuit 200 detects at least one capacitive touch position signal and at least one electromagnetic touch position signal, and when the touch control circuit 200 receives an electromagnetic touch position signal, the touch control circuit 200 switches to the electromagnetic scanning working state; when the touch control circuit 200 is in the electromagnetic scanning working state, the touch control circuit 200 stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal within a subsequent display screen scanning cycle of a first preset number of frames.

[0083] For example, continue to see Figure 2, in the i-th frame, i+1-th frame, i+2-th frame and i+3-th frame display screen scanning cycle, the touch control circuit 200 is in the pre-scanning working state, at which time the touch control circuit 200 receives two capacitive touch position signals and two electromagnetic touch position signals respectively. Since the electromagnetic touch position signal is received in the i+3-th frame display screen scanning cycle, the touch control circuit 200 switches from the pre-scanning working state to the electromagnetic scanning working state, and detects the electromagnetic touch position signal in the subsequent i+4-th frame, i+5-th frame, i+6-th frame and i+7-th frame display screen scanning cycle. Therefore, the above embodiment can realize the detection of capacitive touch position signals and electromagnetic touch position signals by the touch control circuit 200 working in the pre-scanning working state, so as to realize the capacitive touch and electromagnetic touch pre-scanning functions; and the touch control circuit 200 working in the electromagnetic scanning working state is conducive to further improving the scanning frequency of the electromagnetic touch position signal.

[0084] In some embodiments of the present application, when the touch control circuit 200 does not receive the electromagnetic touch position signal for a certain period of time in the electromagnetic scanning working state, the touch control circuit 200 can switch to the pre-scan working state to re-pre-scan the capacitive touch position signal and the electromagnetic touch position signal. As an example, when the touch control circuit 200 does not receive the electromagnetic touch position signal for 30 frames, 60 frames, 72 frames or 144 frames of display screen scanning cycles in the electromagnetic scanning working state, the touch control circuit 200 can switch to the pre-scan working state.

[0085] In some embodiments of the present application, the touch control circuit 200 also has a capacitive scanning working state. After the touch control circuit 200 receives a capacitive touch position signal once in the pre-scanning working state, the touch control circuit 200 switches to the capacitive scanning working state; when the touch control circuit 200 is in the capacitive scanning working state, the touch control circuit 200 stops detecting the electromagnetic touch position signal and continues to detect the capacitive touch position signal within the subsequent display screen scanning cycle of a second preset number of frames.

[0086] For example, see Figure 3, wherein, in the i-th frame, the i+1-th frame, the i+2-th frame and the i+3-th frame display picture scanning cycle, the touch control circuit 200 is in the pre-scanning working state, at which time the touch control circuit 200 receives two capacitive touch position signals and two electromagnetic touch position signals respectively. Since the capacitive touch position signal is received in the i+3-th frame display picture scanning cycle, the touch control circuit 200 switches from the pre-scanning working state to the capacitive scanning working state, and detects the capacitive touch position signal in the subsequent i+4-th frame, i+5-th frame, i+6-th frame and i+7-th frame display picture scanning cycle. Therefore, the above embodiment is conducive to further improving the scanning frequency of the capacitive touch position signal by operating the touch control circuit 200 in the capacitive scanning working state.

[0087] In some embodiments of the present application, when the touch control circuit 200 does not receive the capacitive touch position signal for a certain period of time in the capacitive scanning working state, the touch control circuit 200 can switch to the pre-scan working state to re-pre-scan the capacitive touch position signal and the electromagnetic touch position signal. As an example, when the touch control circuit 200 does not receive the capacitive touch position signal for 30 frames, 60 frames, 72 frames or 144 frames of display screen scanning cycles in the capacitive scanning working state, the touch control circuit 200 can switch to the pre-scan working state.

[0088] In some embodiments of the present application, when the touch control circuit 200 is in the pre-scanning working state, the touch control circuit 200 detects the capacitive touch position signal in the Nth frame display image scanning cycle, and detects the electromagnetic touch position signal in the Mth frame display image scanning cycle, where one of M and N is an odd number and the other is an even number. Figure 2 When the touch control circuit 200 is in the pre-scanning working state, the touch control circuit 200 detects the capacitive touch position signal in the i-th frame and the i+2-th frame display screen scanning cycle, and the touch control circuit 200 detects the electromagnetic touch position signal in the i+1-th frame and the i+3-th frame display screen scanning cycle, so that the capacitive touch position signal and the electromagnetic touch position signal are not detected in the same frame display screen scanning cycle, thereby avoiding the phenomenon that the capacitive touch position signal and the electromagnetic touch position signal are detected at the same time and cause the two to interfere with each other.

[0089] It is understandable that when the touch control circuit 200 is in the pre-scan working state, the touch control circuit 200 can detect at least one capacitive touch position signal and at least one electromagnetic touch position signal within the same frame display image scanning cycle, and it is only necessary to stagger the capacitive touch position signal detection time and the electromagnetic touch position signal detection time.

[0090] For example, see Figure 4 , Figure 4 Another schematic diagram of the scanning signal of the touch control circuit 200 in the embodiment of the present application is shown, wherein, when the touch control circuit 200 is in the pre-scan working state, the touch control circuit 200 performs capacitive touch position signal and electromagnetic touch position signal detection once in the i-th frame, the i+1-th frame, the i+2-th frame and the i+3-th frame display screen scanning cycle, but the capacitive touch position signal detection time and the electromagnetic touch position signal detection time are staggered. Therefore, after receiving the electromagnetic touch position signal in the i+3-th frame display screen scanning cycle, the touch control circuit 200 switches to the electromagnetic scanning working state, and performs electromagnetic touch position signal detection twice in the i-th frame, the i+1-th frame, the i+2-th frame and the i+3-th frame display screen scanning cycle, thereby not only avoiding the mutual interference between the capacitive scanning and the electromagnetic scanning signals in the pre-scan working state, but also doubling the scanning frequency of the electromagnetic touch position signal in the electromagnetic scanning working state.

[0091] In some embodiments of the present application, each display frame scanning cycle includes a display time and a non-display time; when the touch control circuit 200 is in the pre-scanning working state, the touch control circuit 200 detects the capacitive touch position signal during the non-display time of the Nth display frame scanning cycle, and detects the electromagnetic touch position signal during the non-display time of the Mth display frame scanning cycle. Figure 5 For example, Figure 5 Another schematic diagram of the scanning signal of the touch control circuit 200 in the embodiment of the present application is shown, wherein the touch control circuit 200 detects the capacitive touch position signal during the non-display time of the display picture scanning cycle of the i-th frame and the i+2-th frame, and the touch control circuit 200 detects the electromagnetic touch position signal during the non-display time of the display picture scanning cycle of the i+1-th frame and the i+3-th frame, which not only staggers the detection time of the electromagnetic touch position signal and the detection time of the capacitive touch position signal, but also staggers the detection time of the electromagnetic touch position signal and the capacitive touch position signal with the display detection time, thereby facilitating the phenomenon that the electromagnetic scanning signal, the capacitive scanning signal and the display scanning signal interfere with each other.

[0092] It can be understood that when the touch control circuit 200 is in the electromagnetic scanning working state, the touch control circuit 200 detects the electromagnetic touch position signal during the non-display time of each frame display picture scanning cycle; or, when the touch control circuit 200 is in the capacitive scanning working state, the touch control circuit 200 detects the capacitive touch position signal during the non-display time of each frame display picture scanning cycle, so that the detection time of the electromagnetic touch position signal and the capacitive touch position signal is staggered with the display detection time.

[0093] It should be noted that, in the present application, a scanning cycle of a display frame refers to the time from the start of displaying a frame to the start of displaying the next frame on the display panel. Taking the display refresh frequency of 60 frames as an example, the scanning cycle of a display frame is 1 / 60 second; in addition, the display time of a scanning cycle of a display frame in the present application refers to the time taken from the start of refreshing the current frame to the completion of refreshing the current frame. Taking the row-by-row scanning and refreshing of a frame as an example, the total time taken for the corresponding circuits of all pixel rows to receive the display scanning signal row by row and make the pixel points emit light is the display time; the non-display time of a scanning cycle of a display frame refers to the time remaining except the display time. For example, the non-display time may refer to the field blanking time between the pixel circuit displaying one frame of display and switching to the next frame of display.

[0094] In some embodiments of the present application, see Figure 6 , Figure 6 A schematic diagram of a display device in an embodiment of the present application is shown, wherein the touch circuit 100 includes a capacitive touch circuit 10 and an electromagnetic touch circuit 20; the capacitive touch circuit 10 is used to output a capacitive touch position signal based on a capacitive scanning signal, and the electromagnetic touch circuit 20 is used to output an electromagnetic touch position signal based on the electromagnetic scanning signal; when the touch control circuit 200 is in a pre-scanning working state, the touch control circuit 200 inputs a capacitive scanning signal to the capacitive touch circuit 10 and the electromagnetic touch circuit 20 during the non-display time of the Nth frame display screen scanning cycle.

[0095] It should be noted that, since the capacitive touch circuit 10 usually needs to input a capacitive scanning signal to charge the capacitor, and then the touch control circuit 200 detects the capacitor voltage to obtain the capacitive touch position signal, the capacitive touch circuit 10 may generate parasitic capacitance with the electromagnetic touch circuit 20, causing the corresponding capacitance finger of the capacitive touch circuit 10 to change, thereby causing the phenomenon of capacitive touch false alarm point. In the above embodiment, when the touch control circuit 200 is in the pre-scanning working state, the touch control circuit 200 inputs the capacitive scanning signal to the capacitive touch circuit 10 and the electromagnetic touch circuit 20 during the non-display time of the Nth frame display picture scanning cycle, that is, when the touch control circuit 200 detects the capacitive touch position signal, it simultaneously inputs the capacitive scanning signal to the capacitive touch circuit 10 and the electromagnetic touch circuit 20, so that the potential of the capacitive touch circuit 10 and the electromagnetic touch circuit 20 are equal, which is conducive to avoiding the phenomenon of capacitive touch false alarm point caused by the unequal potential of the capacitive touch circuit 10 and the electromagnetic touch circuit 20.

[0096] In some embodiments of the present application, see Figure 6, wherein the capacitive touch circuit 10 includes a plurality of first capacitor metal traces 11 extending along a first direction and a plurality of second capacitor metal traces 12 extending along a second direction; the plurality of first capacitor metal traces 11 are arranged side by side and spaced apart along the second direction, and at least one first capacitor metal trace 11 is electrically connected to the touch control circuit 200; the plurality of second capacitor metal traces 12 are arranged side by side and spaced apart along the first direction, and at least one second capacitor metal trace 12 is electrically connected to the touch control circuit 200. Specifically, the first capacitor metal traces 11 and the second capacitor metal traces 12 are insulated from each other. Since the first capacitor metal traces 11 extend along the first direction and the second capacitor metal traces 12 extend along the second direction, a capacitor structure can be formed at the intersection of the first capacitor metal traces 11 and the second capacitor metal traces 12. When a finger or a stylus touches the capacitor structure at a certain position, the capacitance value of the capacitor can be changed to output a capacitive touch position signal.

[0097] It can be understood that the above content is explained using a mutual capacitance capacitive touch circuit as an example. In fact, the capacitive touch circuit 10 may also only include multiple first capacitor metal traces 11 extending along the first direction, or the capacitive touch circuit 10 may also only include multiple first capacitor metal traces 11 extending along the second direction. In this case, the capacitive touch circuit 10 is a self-capacitive capacitive touch circuit.

[0098] For example, see Figure 7 , Figure 7 A schematic diagram of a capacitive touch circuit 10 in an embodiment of the present application is shown, wherein the capacitive touch circuit 10 includes a plurality of second capacitor metal traces 12 extending along a second direction, the plurality of second capacitor metal traces 12 are arranged side by side and spaced apart along a first direction, each second capacitor metal trace 12 is electrically connected to a touch control circuit 200, and each second capacitor metal trace 12 has only one capacitor plate at a certain position. When a finger or a stylus approaches a capacitor plate at a certain position, the voltage of the capacitor plate will change and eventually a capacitive touch position signal will be output through the corresponding second capacitor metal trace 12.

[0099] In some embodiments of the present application, see Figure 6, wherein the electromagnetic touch control circuit 20 has a plurality of first circular metal traces 21 extending in the first direction and a second circular metal trace 22 extending in the second direction; the plurality of first circular metal traces 21 are arranged side by side and spaced in the second direction, and the first end and the second end of at least one first circular metal trace 21 are electrically connected to the touch control circuit 200; the plurality of second circular metal traces 22 are arranged side by side and spaced in the first direction, and the first end and the second end of at least one second circular metal trace 22 are electrically connected to the touch control circuit 200. Specifically, the first circular metal trace 21 and the second circular metal trace 22 are insulated from each other. When the electromagnetic stylus is close to the display device, a large induction current will be generated in one first circular metal trace 21 and one second circular metal trace 22. Therefore, the touch control circuit 200 can determine the horizontal coordinate and the vertical coordinate of the electromagnetic stylus touching the screen according to the position of the first circular metal trace 21 and the position of the second circular metal trace 22 corresponding to the received induction current, and finally determine the touch position of the electromagnetic stylus.

[0100] It can be understood that the above electromagnetic touch circuit 20 is only an exemplary description, and those skilled in the art can also make equivalent modifications to the electromagnetic touch circuit 20. For example, refer to Figure 8 , Figure 8 A schematic diagram of the electromagnetic touch circuit 20 in an embodiment of the present application is shown, wherein the electromagnetic touch circuit 20 includes a plurality of second circular metal traces 22 arranged in a rectangular row, and the position of each second circular metal trace 22 corresponds to a horizontal coordinate and a vertical coordinate. Therefore, when a second circular metal trace 22 generates a large induced current, the touch position of the electromagnetic touch pen can be determined.

[0101] In some embodiments of the present application, for example, for an embodiment in which the touch control circuit 200 simultaneously inputs a capacitance scanning signal to the capacitive touch circuit 10 and the electromagnetic touch circuit 20 when detecting a capacitance touch position signal, continue to refer to Fig. 9 , Fig. 9 Another schematic diagram of a display device in an embodiment of the present application is shown, wherein the touch control circuit 200 includes a switching circuit 210; the first end of at least one first circular metal trace 21 and the first end of at least one second circular metal trace 22 are electrically connected to the switching circuit 210; the switching circuit 210 is used to input a capacitive scanning signal to the first end of at least one first circular metal trace 21 and the first end of at least one second circular metal trace 22, or to receive an electromagnetic touch position signal output by the first end of at least one first circular metal trace 21 and the first end of at least one second circular metal trace 22.

[0102] Specifically, Fig. 9For example, the switching switch circuit 210 includes a plurality of first switches S1 and a plurality of second switches S2. When the touch control circuit 200 detects the capacitive touch position signal, the touch control circuit 200 inputs the capacitive scanning signal to the first capacitive metal trace 11 of the capacitive touch circuit 10, and the second capacitive metal trace 12 can output the capacitive touch position signal. At the same time, the first switch S1 is disconnected and the second switch S2 is closed. Therefore, the touch control circuit 200 also inputs the capacitive scanning signal to the electromagnetic touch circuit 20, thereby avoiding the phenomenon of misreporting the capacitive touch point due to the different potentials of the capacitive touch circuit 10 and the electromagnetic touch circuit 20. When the touch control circuit 200 detects the electromagnetic touch position signal, the touch control circuit 200 can close the first switch S1 through the electromagnetic scanning signal, and disconnect the second switch S2. Therefore, the touch control circuit 200 can scan the electromagnetic touch position signal normally.

[0103] In some embodiments of the present application, see Fig.10 , Fig.10 Another schematic diagram of a display device in an embodiment of the present application is shown, wherein the touch circuit 100 includes a plurality of first metal wires 101 extending along a first direction, a plurality of second metal wires 102 extending along the first direction, and a first switch circuit 103; the plurality of first metal wires 101 are arranged side by side and spaced apart along a second direction, the plurality of second metal wires 102 are arranged side by side along the second direction, and the first metal wires 101 and the second metal wires 102 are arranged alternately and spaced apart; a first end of at least one first metal wire 101 and at least one second metal wire 102 is electrically connected to the first switch circuit 103, and a second end of at least one first metal wire 101 and at least one second metal wire 102 is electrically connected to the touch control circuit 200; wherein the first switch circuit 103 is used to turn on / off the first end of at least one first metal wire 101 and at least one second metal wire 102.

[0104] Specifically, when the touch control circuit 200 detects a capacitive touch position signal, the first switch circuit 103 disconnects the first end of the first metal trace 101 and the second metal trace 102. At this time, the first metal trace 101 and the second metal trace 102 do not form a loop. The touch circuit 100 is a capacitive touch circuit 10. Therefore, the capacitive touch position signal can be detected by using the first metal trace 101 and the second metal trace 102. When the touch control circuit 200 detects an electromagnetic touch position signal, the first switch circuit 103 connects the first end of the first metal trace 101 and the second metal trace 102. At this time, the first metal trace 101 and the second metal trace 102 form a loop to generate an induced current. The touch circuit 100 is an electromagnetic touch circuit 20. Therefore, the ring metal trace formed by the first metal trace 101 and the second metal trace 102 can be used to detect the electromagnetic touch position signal.

[0105] It can be seen that by turning on / off the first end of at least one first metal trace 101 and at least one second metal trace 102 through the first switch circuit 103, the touch circuit 100 can be switched to the electromagnetic touch circuit 20 or the capacitive touch circuit 10, and the electromagnetic touch circuit 20 and the capacitive touch circuit 10 share the metal trace, and there is no need to respectively set the electromagnetic touch circuit 20 and the capacitive touch circuit 10 in different material layers to ensure the insulation of the two, which is conducive to simplifying the circuit structure of the touch circuit 100 and the thickness of the display device. In addition, since the electromagnetic touch circuit 20 and the capacitive touch circuit 10 do not exist at the same time, the problem of capacitance false alarm points caused by separately setting the electromagnetic touch circuit 20 and the capacitive touch circuit 10 can also be solved.

[0106] In some embodiments of the present application, for example, for an embodiment in which the capacitive touch circuit 10 is a mutual capacitance capacitive touch circuit, continue to refer to Fig.11 , Fig.11 Another schematic diagram of the display device in an embodiment of the present application is shown, wherein the touch circuit 100 further includes a plurality of third metal traces 104 extending along the second direction, a plurality of fourth metal traces 105 extending along the second direction, and a second switch circuit 106; the plurality of third metal traces 104 are arranged side by side and spaced apart along the first direction, the plurality of fourth metal traces 105 are arranged side by side along the first direction, and the third metal traces 104 and the fourth metal traces 105 are arranged alternately and spaced apart; a first end of at least one third metal trace 104 and at least one fourth metal trace 105 is electrically connected to the second switch circuit 106, and a second end of at least one third metal trace 104 and at least one fourth metal trace 105 is electrically connected to the touch control circuit 200; wherein the second switch circuit 106 is used to turn on / off the first end of at least one third metal trace 104 and at least one fourth metal trace 105.

[0107] It should be noted that since the first metal routing 101 and the second metal routing 102 extend along the first direction, and the third metal routing 104 and the fourth metal routing 105 extend along the second direction, the first metal routing 101 (the second metal routing 102) and the third metal routing 104 (the fourth metal routing 105) can cross each other to form a capacitor, so that when the first switching circuit 103 disconnects the first end of the first metal routing 101 and the second metal routing 102, and the second switching circuit 106 disconnects the first end of the third metal routing 104 and the fourth metal routing 105, the first metal routing 101, the second metal routing 102, the third metal routing 104 and the fourth metal routing 105 form a mutual capacitance capacitive touch circuit 10. When the first switch circuit 103 conducts the first ends of the first metal trace 101 and the second metal trace 102, and the second switch circuit 106 conducts the first ends of the third metal trace 104 and the fourth metal trace 105, the first metal trace 101 and the second metal trace 102 form a ring-shaped metal trace extending along the first direction, and the third metal trace 104 and the fourth metal trace 105 form a ring-shaped metal trace extending along the second direction, so that the touch circuit 100 is switched to the electromagnetic touch circuit 20 at this time.

[0108] As an example, continue to refer to Fig.11 The first switch circuit 103 may include a plurality of first sub-switches S01, and the second switch circuit 106 may include a plurality of second sub-switches S02. One end of the first sub-switch S01 is connected to a first metal routing 101, and the other end is connected to a first end of a second metal routing 102. When the first sub-switch S01 is closed, the first metal routing 101 and the second metal routing 102 form a ring-shaped metal routing extending along the first direction; one end of the second sub-switch S02 is connected to a third metal routing 104, and the other end is connected to a first end of the third metal routing 104. When the second sub-switch S02 is closed, the third metal routing 104 and the fourth metal routing 105 form a ring-shaped metal routing extending along the second direction.

[0109] In some embodiments of the present application, for example, for an embodiment in which the capacitive touch circuit 10 is a self-capacitive capacitive touch circuit, refer to Fig.12 , Fig.12Another schematic diagram of the touch circuit 100 in the embodiment of the present application is shown, wherein the touch circuit 100 further includes a plurality of sub-annular metal traces 107 extending along the second direction; the plurality of sub-annular metal traces 107 are arranged side by side and spaced apart along the first direction, and the first end and the second end of the sub-annular metal traces 107 are electrically connected to the touch control circuit 200. Specifically, when the first switch circuit 103 disconnects the first end of the first metal trace 101 and the second metal trace 102, the first metal trace 101 and the second metal trace 102 can form a self-capacitive capacitive touch circuit 10; conversely, when the first switch circuit 103 connects the first end of the first metal trace 101 and the second metal trace 102, the first metal trace 101 and the second metal trace 102 form a ring-shaped metal trace extending along the first direction, and combined with the sub-annular metal trace 107 extending along the second direction, the touch circuit 100 is finally switched to the electromagnetic touch circuit 20.

[0110] In some embodiments of the present application, for example, for an embodiment in which the touch control circuit 200 simultaneously inputs a capacitance scanning signal to the capacitive touch circuit 10 and the electromagnetic touch circuit 20 when detecting a capacitance touch position signal, continue to refer to Fig.13 , Fig.13 Another schematic diagram of a display device in an embodiment of the present application is shown, wherein the touch control circuit 200 includes a switching circuit 210, and the first end of at least one sub-ring metal trace 107 is electrically connected to the switching circuit 210; the switching circuit 210 is used to input a capacitive scanning signal to the first end of at least one sub-ring metal trace 107, or to receive an electromagnetic touch position signal output by the first end of at least one sub-ring metal trace 107.

[0111] Specifically, Fig.13For example, the switching switch circuit 210 includes a plurality of first switches S1 and a plurality of second switches S2. When the touch control circuit 200 detects the capacitive touch position signal, the first switch circuit 103 disconnects the first end of the first metal trace 101 and the second metal trace 102, and the touch control circuit 200 inputs a capacitive scanning signal to the capacitive touch circuit 10 composed of the first metal trace 101 and the second metal trace 102 to detect the capacitive touch position signal. At the same time, the first switch S1 is disconnected and the second switch S2 is closed, so the touch control circuit 200 also inputs a capacitive scanning signal to the electromagnetic touch circuit 20, thereby avoiding the phenomenon of false capacitive touch points caused by different potentials between the capacitive touch circuit 10 and the electromagnetic touch circuit 20. When the touch control circuit 200 detects the electromagnetic touch position signal, the first switch circuit 103 conducts the first metal trace 101 and the first end of the second metal trace 102 to form a ring metal trace, and at the same time, the first switch S1 of the switching circuit 210 is closed and the second switch S2 is opened, so that the touch control circuit 200 can detect the electromagnetic touch position signal normally.

[0112] It is worth noting that the above content is intended to clearly illustrate the implementation verification process of this application. Those skilled in the art can also make equivalent modified designs under the guidance of this application. For example, refer to Fig.13 The first switch circuit 103 may also control the conduction or disconnection of the first end between the first metal wiring 101 and the second metal wiring 102 through a plurality of switches.

[0113] Furthermore, in order to better implement the display device in the embodiment of the present application, based on the display device, the present application also provides an electronic device, referring to Fig.14 , Fig.14 A schematic diagram of an electronic device in an embodiment of the present application is shown, and the electronic device includes a display device 1000 and a device body 2000 as described in any of the above embodiments, wherein the device body 2000 may refer to a frame, a rack or a bracket, etc. that carries the display device 1000. The electronic device in the embodiment of the present application may be, but is not limited to, a television device, a laptop computer, a tablet computer, a large game console, a mobile phone, a portable game console or a portable information terminal, etc.

[0114] Those skilled in the art will appreciate that the electronic device structure shown in the figures does not limit the electronic device and may include more or fewer components than shown in the figures, or combine certain components, or arrange the components differently.

[0115] The above is a detailed introduction to a display device provided in an embodiment of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A display device, characterized in that: include: A touch control circuit, the touch control circuit is used to output a capacitive touch position signal and an electromagnetic touch position signal; A touch control circuit, the touch control circuit is used to detect the capacitive touch position signal and the electromagnetic touch position signal; Wherein, the touch control circuit detects the capacitive touch position signal and the electromagnetic touch position signal in different time periods; When the touch control circuit receives the electromagnetic touch position signal within a certain frame display image scanning cycle, the touch control circuit stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal within a subsequent first preset number of frames of display image scanning cycles, so as to utilize the original capacitive touch scanning time for electromagnetic touch scanning.

2. The display device according to claim 1, wherein: When the touch control circuit receives the capacitive touch position signal in a certain frame display image scanning cycle, the touch control circuit stops detecting the electromagnetic touch position signal and continues detecting the capacitive touch position signal in a subsequent second preset number of frame display image scanning cycles.

3. The display device according to claim 1, wherein: The touch control circuit has a pre-scanning working state and an electromagnetic scanning working state; When the touch control circuit is in the pre-scanning working state, the touch control circuit detects at least one capacitive touch position signal and at least one electromagnetic touch position signal, and after the touch control circuit receives the electromagnetic touch position signal once, the touch control circuit switches to the electromagnetic scanning working state; When the touch control circuit is in the electromagnetic scanning working state, the touch control circuit stops detecting the capacitive touch position signal and continues detecting the electromagnetic touch position signal in a subsequent display image scanning cycle of a first preset number of frames.

4. The display device according to claim 3, characterized in that The touch control circuit also has a capacitance scanning working state; After the touch control circuit receives the capacitive touch position signal once in the pre-scanning working state, the touch control circuit switches to the capacitive scanning working state; When the touch control circuit is in the capacitive scanning working state, the touch control circuit stops detecting the electromagnetic touch position signal and continues detecting the capacitive touch position signal in a subsequent display image scanning cycle of a second preset number of frames.

5. The display device according to claim 3, characterized in that When the touch control circuit is in the pre-scanning working state, the touch control circuit detects the capacitive touch position signal in the Nth frame display picture scanning period, and detects the electromagnetic touch position signal in the Mth frame display picture scanning period, where one of M and N is an odd number and the other is an even number; or When the touch control circuit is in the pre-scanning working state, the touch control circuit detects at least one capacitive touch position signal and at least one electromagnetic touch position signal within a same display frame scanning period.

6. The display device according to claim 5, characterized in that The display picture scanning cycle of each frame includes display time and non-display time; When the touch control circuit is in the pre-scanning working state, the touch control circuit detects the capacitive touch position signal during the non-display time of the N-th frame display picture scanning cycle, and detects the electromagnetic touch position signal during the non-display time of the M-th frame display picture scanning cycle.

7. The display device according to claim 6, wherein: The touch control circuit includes a capacitive touch control circuit and an electromagnetic touch control circuit; The capacitive touch control circuit is used to output a capacitive touch position signal based on the capacitive scanning signal, and the electromagnetic touch control circuit is used to output an electromagnetic touch position signal based on the electromagnetic scanning signal; When the touch control circuit is in the pre-scanning working state, the touch control circuit inputs the capacitive scanning signal to the capacitive touch circuit and the electromagnetic touch circuit during the non-display time of the Nth frame display image scanning cycle.

8. The display device according to claim 7, characterized in that The electromagnetic touch control circuit comprises a plurality of first annular metal traces extending along a first direction and a second annular metal traces extending along a second direction; A plurality of the first annular metal wires are arranged side by side and spaced apart along the second direction, and a first end and a second end of at least one of the first annular metal wires are electrically connected to the touch control circuit; A plurality of the second annular metal traces are arranged side by side and spaced apart along the first direction, and a first end and a second end of at least one of the second annular metal traces are electrically connected to the touch control circuit.

9. The display device according to claim 8, wherein: The touch control circuit includes a switching circuit; A first end of at least one of the first annular metal traces and a first end of at least one of the second annular metal traces are electrically connected to the switching circuit; The switching circuit is used to input the capacitive scanning signal to the first end of the at least one first circular metal trace and the first end of the at least one second circular metal trace, or to receive the electromagnetic touch position signal output by the first end of the at least one first circular metal trace and the first end of the at least one second circular metal trace.

10. The display device according to claim 1, wherein: The touch control circuit includes a plurality of first metal traces extending along a first direction, a plurality of second metal traces extending along the first direction, and a first switch circuit; A plurality of the first metal routings are arranged side by side and spaced apart along the second direction, a plurality of the second metal routings are arranged side by side along the second direction, and the first metal routings and the second metal routings are arranged alternately and spaced apart; A first end of at least one of the first metal traces and at least one of the second metal traces is electrically connected to the first switch circuit, and a second end of at least one of the first metal traces and at least one of the second metal traces is electrically connected to the touch control circuit; The first switch circuit is used to turn on / off the first end of at least one of the first metal wirings and at least one of the second metal wirings.

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