Display module, display device and driving method

Abstract

This invention discloses a display module, a display device, and a driving method, including: a touch privacy panel located on the light-emitting side of the display panel; the touch privacy panel includes: a first substrate and a second substrate disposed opposite to each other; a liquid crystal layer located between the first substrate and the second substrate; a first privacy electrode layer located between the liquid crystal layer and the first substrate; a second privacy electrode layer located between the liquid crystal layer and the second substrate; the second privacy electrode layer includes a plurality of privacy electrodes arranged in an array; the privacy electrodes are reused as touch electrodes; a plurality of driving control circuits, wherein a row of privacy electrodes is electrically connected to the same driving control circuit and is configured to provide privacy control signals and touch detection signals to the privacy electrodes. This invention can reduce the overall thickness and weight of the display device, and significantly improve product yield by reducing material stacking and process complexity, while avoiding affecting the light transmittance of the display product, thereby improving display quality.

Description

Technical Field

[0001] This invention relates to the field of display technology, and in particular to display modules, display devices, and driving methods. Background Technology

[0002] With the continuous development of display technology, the application range of display devices is becoming increasingly wide. Commonly used display devices include organic light-emitting diode (OLED) displays and liquid crystal displays (LCDs). To further meet customer needs and adapt to more application scenarios, display devices need to simultaneously possess privacy protection and touch functionality.

[0003] In related technologies, when simultaneously achieving privacy and touch functions, a common approach is to mount a privacy module on the display panel and add an ITO coating to the surface of the glass substrate within the privacy module to form an on-cell touch module, or to add a touch module directly outside the privacy module. This setup results in a very thick overall display device, increases manufacturing complexity, and reduces product yield. Secondly, privacy and touch modules typically require separate driving circuits, meaning the driving circuits for the privacy and touch modules are separate, which increases the cost of the driving circuits. Summary of the Invention

[0004] The display module provided in this embodiment of the invention includes: a display panel;

[0005] A touch privacy panel is located on the light-emitting side of the display panel; the touch privacy panel includes: a first substrate and a second substrate disposed opposite to each other; a liquid crystal layer located between the first substrate and the second substrate; a first privacy electrode layer located between the liquid crystal layer and the first substrate; and a second privacy electrode layer located between the liquid crystal layer and the second substrate;

[0006] The second privacy electrode layer includes a plurality of privacy electrodes arranged in an array;

[0007] The privacy electrode is reused as a touch electrode;

[0008] Multiple drive control circuits are provided, with a row of privacy electrodes electrically connected to the same drive control circuit, which is configured to provide privacy control signals and touch detection signals to the privacy electrodes.

[0009] In some possible implementations, the drive control circuit includes: a signal loading circuit, a touch detection circuit, and a switch control circuit;

[0010] The signal loading circuit and the touch detection circuit are respectively electrically connected to the same privacy electrode through the switch control circuit. The switch control circuit is configured to control the privacy electrode to be connected to the signal loading circuit or to control the privacy electrode to be connected to the touch detection circuit.

[0011] When the privacy electrode is connected to the signal loading circuit, the signal loading circuit is configured to load the privacy control signal from the privacy control signal terminal to the privacy electrode, and to load the touch detection signal from the touch detection signal terminal to the privacy electrode.

[0012] When the privacy electrode is connected to the touch detection circuit, the touch detection circuit is configured to determine the touch position based on the change of the touch detection signal on the privacy electrode.

[0013] In some possible implementations, the signal loading module includes: an inverting amplifier, a first resistor, a second resistor, and a first capacitor;

[0014] The first terminal of the inverting amplifier is electrically connected to the switch control circuit, the second terminal of the inverting amplifier is electrically connected to the first terminal of the first resistor, and the third terminal of the inverting amplifier is electrically connected to the privacy control signal terminal.

[0015] The second end of the first resistor is electrically connected to the first electrode of the first capacitor;

[0016] The second electrode of the first capacitor is electrically connected to the touch detection signal terminal;

[0017] The first end of the second resistor is electrically connected to the first end of the inverting amplifier, and the second end of the second resistor is electrically connected to the second end of the inverting amplifier.

[0018] In some possible implementations, the switch control circuit includes: a selection control switch, a third resistor, and a second capacitor;

[0019] The first terminal of the selection control switch is electrically connected to the first terminal of the third resistor, the second terminal of the selection control switch is electrically connected to the signal loading circuit, and the third terminal of the selection control switch is electrically connected to the touch detection circuit.

[0020] The second end of the third resistor is electrically connected to the privacy electrode.

[0021] The first electrode of the second capacitor is electrically connected to the privacy electrode, and the second electrode of the second capacitor is grounded.

[0022] In some possible implementations, the touch privacy panel further includes: a first conductive layer and a first insulating layer;

[0023] The first conductive layer is located between the second substrate and the first insulating layer;

[0024] The first insulating layer is located between the second privacy electrode layer and the first conductive layer;

[0025] The first conductive layer includes multiple first signal lines, and one of the privacy electrodes is electrically connected to the drive control circuit through one of the first signal lines.

[0026] In some possible implementations, a drive circuit board is provided, on which the plurality of drive control circuits are disposed, and electrically connected to a first signal line in the first conductive layer of the touch privacy panel via a second signal line.

[0027] The display device provided in this embodiment of the invention includes the display module described above.

[0028] The driving method for the display module provided in this embodiment of the invention includes: driving the display panel to display an image, and driving the touch privacy panel to operate.

[0029] The operation of the drive-controlled privacy panel includes:

[0030] During at least one driving cycle, a common electrode voltage is applied to the first privacy electrode layer, and the driving control circuit applies a touch detection signal and a privacy control signal to the privacy electrode in a time-division manner; the touch detection signal is a pulse signal, and the privacy control signal is a fixed level signal.

[0031] In some possible implementations, the driving cycle includes a first phase and a second phase, the touch detection signal includes a first touch detection signal and a second touch detection signal, and the fixed level signal includes a first level signal and a second level signal;

[0032] In the first stage, a common electrode voltage is applied to the first privacy electrode layer, and the drive control circuit applies a first touch detection signal and a first level signal to the privacy electrode in a time-division manner.

[0033] In the second stage, a common electrode voltage is applied to the first privacy electrode layer, and the drive control circuit applies a second touch detection signal and a second level signal to the privacy electrode in a time-division manner.

[0034] In some possible implementations, during the first and second stages, the signal loading circuit loads the touch detection signal from the touch detection signal terminal onto the privacy electrode, and the touch detection circuit determines the touch position based on the change in the touch detection signal on the privacy electrode; the signal loading circuit also loads the privacy control signal from the privacy control signal terminal onto the privacy electrode. Attached Figure Description

[0035] Figure 1 These are some structural schematic diagrams of display devices in related technologies;

[0036] Figure 2 These are other structural schematic diagrams of display devices in related technologies;

[0037] Figure 3 for Figure 2 A schematic diagram of the cross-sectional structure of the display device along the AA' direction;

[0038] Figure 4 for Figure 2 A schematic diagram of the cross-sectional structure of the display device along the BB' direction;

[0039] Figure 5 These are some structural schematic diagrams of the display module provided in the embodiments of the present invention;

[0040] Figure 6 These are some other structural schematic diagrams of the display module provided in the embodiments of the present invention;

[0041] Figure 7 These are further structural schematic diagrams of the display module provided in embodiments of the present invention;

[0042] Figure 8 These are further structural schematic diagrams of the display module provided in embodiments of the present invention;

[0043] Figure 9 These are further structural schematic diagrams of the display module provided in embodiments of the present invention;

[0044] Figure 10 Provided for embodiments of the present invention Figure 9 A schematic diagram of the cross-sectional structure of the display module along the CC' direction;

[0045] Figure 11 This is a flowchart of a driving method for a display module provided in an embodiment of the present invention;

[0046] Figure 12 Some signal timing diagrams provided for embodiments of the present invention;

[0047] Figure 13 Other signal timing diagrams provided for embodiments of the present invention;

[0048] Figure 14 Further signal timing diagrams provided for embodiments of the present invention;

[0049] Figure 15 These are further structural schematic diagrams of the display module provided in embodiments of the present invention;

[0050] Figure 16 These are further structural schematic diagrams of the display module provided in embodiments of the present invention;

[0051] Figure 17 These are some more signal timing diagrams provided for embodiments of the present invention. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Furthermore, the embodiments and features in the embodiments of the present invention can be combined with each other without conflict. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] Unless otherwise defined, the technical or scientific terms used in this invention shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0054] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of the invention. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0055] In related technologies, when enabling a display device to simultaneously achieve privacy protection and touch functionality, it is generally possible to mount a privacy protection module on the display panel and add an ITO coating to the surface of the glass substrate in the privacy protection module to form an embedded touch (on-cell touch) module, or to directly add a touch module outside the privacy protection module.

[0056] For example, such as Figure 1As shown, the privacy module 1 includes a metal layer 10, an electrode layer 20, a liquid crystal layer 30, and a glass substrate 40; the touch module 2 includes a metal layer 10 and an electrode layer 20; the touch module 2 is generally disposed on the surface of the glass substrate 40 in the privacy module 1; and in order to prevent damage to the touch module 2, a protective glass layer needs to be added to the surface of the touch module 2, which results in a very thick overall display device, increases the difficulty of the process, and reduces the product yield.

[0057] Furthermore, adding one or two metal layers and protective glass to the privacy module in related technologies will further reduce the light transmittance of the display product, thereby reducing the brightness of the display product and thus leading to a decline in display quality.

[0058] Secondly, privacy modules and touch modules generally need to be equipped with corresponding driving circuits, that is, the driving circuits corresponding to privacy modules and touch modules are separate. Therefore, they need to be electrically connected to the printed circuit board (PCB) on the periphery of the display panel through different flexible printed circuit boards (FPCs).

[0059] For example, such as Figure 2 As shown, the privacy module is electrically connected to the printed circuit board (PCB) via the flexible circuit board (FPC2), and the touch module is electrically connected to the PCB via the flexible circuit board (FPC1). Therefore, the separation of the driving circuits for the privacy module and the touch module will lead to a significant increase in the number of related components used, which will increase the cost of the driving circuit and also result in a larger size of the printed circuit board.

[0060] And, as Figure 3 and Figure 4 As shown, the privacy module 1 is pressed to the flexible circuit board FPC2 through the metal layer 20, and the touch module 2 is pressed to the flexible circuit board FPC1 through the metal layer 20. It can be seen that the metal layers of the privacy module 1 and the touch module 2 are not on the same layer when pressed to the flexible circuit board, so at least two pressing processes are required. This will increase the complexity of the pressing process and reduce the yield, which will further increase the cost of the circuit.

[0061] To address the aforementioned problems, embodiments of the present invention provide a display module, such as... Figure 5 and Figure 6 As shown, it includes: display panel 100;

[0062] A touch privacy panel 200 is located on the light-emitting side of the display panel 100. The touch privacy panel 200 includes: a first substrate 201 and a second substrate 202 disposed opposite to each other; a liquid crystal layer 203 located between the first substrate 201 and the second substrate 202; a first privacy electrode layer 204 located between the liquid crystal layer 203 and the first substrate 201; and a second privacy electrode layer 205 located between the liquid crystal layer 203 and the second substrate 202.

[0063] The second privacy electrode layer 205 includes a plurality of privacy electrodes 2051 arranged in an array;

[0064] The privacy electrode 2051 is reused as the touch electrode 2052;

[0065] Multiple drive control circuits D, a row of privacy electrodes 2051 are electrically connected to the same drive control circuit D, and the drive control circuit D is configured to provide privacy control signals and touch detection signals to the privacy electrodes 2051.

[0066] In this embodiment of the invention, by making the touch privacy panel include a first substrate and a second substrate disposed opposite to each other; a liquid crystal layer located between the first substrate and the second substrate; a first privacy electrode layer located between the liquid crystal layer and the first substrate; and a second privacy electrode layer located between the liquid crystal layer and the second substrate; and by reusing the multiple arrayed privacy electrodes in the second privacy electrode layer as touch electrodes, the thickness and weight of the overall display device can be reduced, and by reducing the material stacking and reducing the complexity of the manufacturing process, the product yield can be greatly improved, and the light transmittance of the display product can be avoided, thereby improving the display quality.

[0067] Furthermore, the touch and privacy functions of the touch privacy panel are realized by setting a drive control circuit. When the drive control circuit provides a privacy control signal, the touch privacy panel has a privacy function; when the drive control circuit provides a touch detection signal, the touch privacy panel has a touch function; and the privacy control angle of each privacy electrode area in the touch privacy panel can be adjusted by the privacy control signal loaded by the drive control circuit.

[0068] For example, the display area of ​​the display panel includes multiple pixel units arranged in an array, and each pixel unit includes multiple sub-pixels. For instance, each pixel unit includes multiple sub-pixels. For example, a pixel unit may include red sub-pixels, green sub-pixels, and blue sub-pixels, allowing for color mixing of red, green, and blue to achieve color display. Alternatively, a pixel unit may also include red sub-pixels, green sub-pixels, blue sub-pixels, and white sub-pixels, allowing for color mixing of red, green, blue, and white to achieve color display. Of course, in practical applications, the emission color of the sub-pixels in a pixel unit can be designed and determined according to the actual application environment, and is not limited here.

[0069] For example, such as Figure 6 As shown, the touch privacy panel can be divided into multiple areas according to the privacy electrode 2051. It is divided into multiple rows along the horizontal direction, namely, row A1, row B1, row C1, row D1, row E1, row F1, row G1, row H1, and row I1; and into multiple columns along the vertical direction, namely, column 01, column 02, column 03, column 04, column 05, column 06, column 07, column 08, column 09, column 010, column 011, column 012, column 013, column 014, and column 015.

[0070] A privacy electrode 2051 is installed in the intersection area A101 of the first row A1 and the first column 01; a privacy electrode 2051 is installed in the intersection area A102 of the first row A1 and the second column 02; a privacy electrode 2051 is installed in the intersection area A103 of the first row A1 and the third column 03; a privacy electrode 2051 is installed in the intersection area A104 of the first row A1 and the fourth column 04; a privacy electrode 2051 is installed in the intersection area A105 of the first row A1 and the fifth column 05; a privacy electrode 2051 is installed in the intersection area A106 of the first row A1 and the sixth column 06; a privacy electrode 2051 is installed in the intersection area A107 of the first row A1 and the seventh column 07; a privacy electrode 2051 is installed in the intersection area A108 of the first row A1 and the eighth column 08; a privacy electrode 2051 is installed in the intersection area A108 of the first row A1 and the first column 08; a privacy electrode 2051 is installed in the intersection area A101 of the first row A1 and the second column 02; a privacy electrode 2051 is installed in the intersection area A103 of the first row A1 and the third column 03; a privacy electrode 2051 is installed in the intersection area A104 of the first row A1 and the fourth column 04; a privacy electrode 2051 is installed in the intersection area A105 of the first row A1 and the fifth column 05; a privacy electrode 2051 is installed in the intersection area A106 of the first row A1 and the sixth column 06; a privacy electrode 2051 is installed in the intersection area A107 of the first row A1 and the seventh column 07; a privacy electrode 2051 is installed in the intersection area A108 of the first row A1 and the eighth column 08 A privacy electrode 2051 is installed in the intersection area A109 of column 9 (09); a privacy electrode 2051 is installed in the intersection area A1010 of column 10 (010 of row 1); a privacy electrode 2051 is installed in the intersection area A1011 of column 11 (011 of row 1); a privacy electrode 2051 is installed in the intersection area A1012 of column 12 (012 of row 1); a privacy electrode 2051 is installed in the intersection area A104 of column 13 (013 of row 1); a privacy electrode 2051 is installed in the intersection area A1014 of column 14 (014 of row 1); a privacy electrode 2051 is installed in the intersection area A1015 of column 15 (015 of row 1); and so on for the other rows, that is, a privacy electrode 2051 is installed in each intersection area.

[0071] Specifically, the privacy electrode 2051 in the first column 01 is electrically connected to the drive control circuit D-1; the privacy electrode 2051 in the second column 02 is electrically connected to the drive control circuit D-2; the privacy electrode 2051 in the third column 03 is electrically connected to the drive control circuit D-3; the privacy electrode 2051 in the fourth column 04 is electrically connected to the drive control circuit D-4; the privacy electrode 2051 in the fifth column 05 is electrically connected to the drive control circuit D-5; the privacy electrode 2051 in the sixth column 06 is electrically connected to the drive control circuit D-6; the privacy electrode 2051 in the seventh column 07 is electrically connected to the drive control circuit D-7; and the privacy electrode 2051 in the eighth column 08 is electrically connected to the drive control circuit D-1. The following circuits are connected: D-8 is electrically connected; the privacy electrode 2051 in column 09 is electrically connected to drive control circuit D-9; the privacy electrode 2051 in column 010 is electrically connected to drive control circuit D-10; the privacy electrode 2051 in column 011 is electrically connected to drive control circuit D-11; the privacy electrode 2051 in column 012 is electrically connected to drive control circuit D-12; the privacy electrode 2051 in column 013 is electrically connected to drive control circuit D-13; the privacy electrode 2051 in column 014 is electrically connected to drive control circuit D-14; and the privacy electrode 2051 in column 015 is electrically connected to drive control circuit D-15.

[0072] In some embodiments of the present invention, such as Figure 7 As shown, the drive control circuit D includes: a signal loading circuit D20, a touch detection circuit D30, and a switch control circuit D10;

[0073] The signal loading circuit D20 and the touch detection circuit D30 are electrically connected to the same privacy electrode 2051 through the switch control circuit D10. The switch control circuit D10 is configured to control the privacy electrode 2051 to be connected to the signal loading circuit D20 or to control the privacy electrode 2051 to be connected to the touch detection circuit D30.

[0074] When the privacy electrode 2051 is turned on by the signal loading circuit D20, the signal loading circuit D20 is configured to load the privacy control signal of the privacy control signal terminal CS1 to the privacy electrode 2051, and to load the touch detection signal of the touch detection signal terminal CS2 to the privacy electrode 2051.

[0075] When the privacy electrode 2051 is connected to the touch detection circuit D30, the touch detection circuit D30 is configured to determine the touch position based on the change of the touch detection signal on the privacy electrode 2051.

[0076] In this embodiment of the invention, the drive control circuit, through the cooperation of the signal loading circuit, the touch detection circuit, and the switch control circuit, enables the touch privacy panel to achieve both touch and privacy functions. This reduces the amount of related components used, thereby simplifying the complexity of the drive control circuit, reducing electronic components, lowering circuit costs, and avoiding a larger printed circuit board size.

[0077] It should be noted that the drive control circuit includes multiple switch control circuits. The number of switch control circuits in the drive control circuit is the same as the number of privacy electrodes in each column, and each privacy electrode is electrically connected to one switch control circuit. For example, ... Figure 6 As shown, a row of privacy electrodes in the touch privacy panel has 9 electrodes. Each electrode has a drive control circuit D (i.e., ... Figure 6 Each of the nine circuits (D-1 to D-15) contains nine switch control circuits. Each of these nine switch control circuits is electrically connected to one of the nine privacy electrodes.

[0078] This setup allows multiple privacy electrodes to be driven by a single drive control circuit, thereby reducing the space occupied by the drive control circuit and lowering the complexity of circuit wiring.

[0079] In some embodiments of the present invention, such as Figure 8 As shown, the signal loading module D20 includes: an inverting amplifier OP1, a first resistor R1, a second resistor R2, and a first capacitor C1;

[0080] The first terminal of the inverting amplifier OP1 is electrically connected to the switch control circuit D10, the second terminal of the inverting amplifier OP1 is electrically connected to the first terminal of the first resistor R1, and the third terminal of the inverting amplifier OP1 is electrically connected to the anti-peeping control signal terminal CS1.

[0081] The second terminal of the first resistor R1 is electrically connected to the first electrode of the first capacitor C1;

[0082] The second electrode of the first capacitor C1 is electrically connected to the touch detection signal terminal CS2;

[0083] The first end of the second resistor R2 is electrically connected to the first end of the inverting amplifier OP1, and the second end of the second resistor R2 is electrically connected to the second end of the inverting amplifier OP1.

[0084] In some embodiments of the present invention, such as Figure 8 As shown, the switch control circuit D10 includes: a selection control switch SW1, a third resistor R3, and a second capacitor C2;

[0085] The first terminal of the selection control switch SW1 is electrically connected to the first terminal of the third resistor R3, the second terminal of the selection control switch SW1 is electrically connected to the signal loading circuit D20, and the third terminal of the selection control switch SW1 is electrically connected to the touch detection circuit D30.

[0086] The second end of the third resistor R3 is electrically connected to the privacy electrode 2051;

[0087] The first electrode of the second capacitor C2 is electrically connected to the privacy electrode 2051, and the second electrode of the second capacitor C2 is grounded at GND.

[0088] In some embodiments of the present invention, such as Figure 5 As shown, the touch privacy panel 200 further includes: a first conductive layer 206 and a first insulating layer 207; wherein, the first conductive layer 206 is located between the second substrate 202 and the first insulating layer 207; the first insulating layer 207 is located between the second privacy electrode layer 205 and the first conductive layer 206; wherein, as Figure 6 As shown, the first conductive layer includes multiple first signal lines S1, and a privacy electrode 2051 is electrically connected to the drive control circuit D through one of the first signal lines S1.

[0089] For example, such as Figure 6 As shown, multiple first signal lines S1 are electrically connected to the privacy electrode 2051 one by one.

[0090] For example, such as Figure 5 As shown, the touch privacy panel 200 further includes: a second conductive layer 208 and a second insulating layer 209; wherein, the second conductive layer 208 is located between the first substrate 201 and the second insulating layer 209; and the second insulating layer 209 is located between the first privacy electrode layer 204 and the second conductive layer 208.

[0091] In some embodiments of the present invention, such as Figure 9 and Figure 10 As shown, it also includes: a drive circuit board PCB1, and multiple drive control circuits D are disposed on the drive circuit board PCB1 and electrically connected to the first signal line in the first conductive layer 206 in the touch privacy panel through the second signal line S2 (which may be located in the flexible circuit board FPC3).

[0092] The drive circuit board corresponding to the touch privacy panel in this embodiment of the invention is small in size, that is, the size of the printed circuit board is simplified, the space occupancy rate is reduced, and it is electrically connected to the touch privacy panel in the display panel only through a single flexible circuit board. Furthermore, it only needs to be pressed with the first conductive layer of the touch privacy panel, reducing the number of pressing processes, thereby reducing the complexity of the pressing process and improving the yield, and further reducing the cost of the circuit.

[0093] This invention also provides a driving method for a display module, including: driving a display panel to display an image, and driving a touch privacy panel to operate; wherein, driving the touch privacy panel to operate includes: applying a common electrode voltage to a first privacy electrode layer during at least one driving cycle, and driving a control circuit to apply a touch detection signal and a privacy control signal to the privacy electrode in a time-division manner; wherein the touch detection signal is a pulse signal, and the privacy control signal is a fixed level signal.

[0094] In some embodiments of the present invention, the driving cycle includes a first stage and a second stage; the touch detection signal includes a first touch detection signal and a second touch detection signal; the fixed level signal includes a first level signal and a second level signal; such as Figure 11 As shown

[0095] S100. In the first stage, a common electrode voltage is applied to the first privacy electrode layer, and the driving control circuit applies a first touch detection signal and a first level signal to the privacy electrode in a time-division manner.

[0096] S200, In the second stage, a common electrode voltage is applied to the first privacy electrode layer, and the driving control circuit applies a second touch detection signal and a second level signal to the privacy electrode in a time-division manner.

[0097] For example, the common electrode voltage Vcom applied to the first privacy electrode layer is as follows: Figure 12 As shown, V represents the voltage value and T represents the time. The common electrode voltage is a fixed-level signal.

[0098] For example, a touch detection signal cs2 and a privacy control signal cs1 are applied to the privacy electrode in a time-division manner. Figure 13 As shown, V represents the voltage value and T represents the time.

[0099] In some embodiments of the present invention, in the first and second stages, the signal loading circuit loads the touch detection signal from the touch detection signal terminal onto the privacy electrode, and the touch detection circuit determines the touch position based on the change of the touch detection signal on the privacy electrode; the signal loading circuit loads the privacy control signal from the privacy control signal terminal onto the privacy electrode.

[0100] The following is based on Figure 5 The display module shown and Figure 8 Taking the drive control circuit shown as an example, combined with Figure 14 The signal timing diagram shown describes the operation of the display module and drive control circuit provided in the embodiments of this disclosure.

[0101] Furthermore, we will select the first stage T1 and the second stage T2 in a driving cycle H for explanation.

[0102] In the first stage T1, firstly, a common electrode voltage is applied to the first privacy electrode layer 204, and the selection control switch SW1 in the switch control circuit D10 turns on the privacy electrode 2051 and the inverting amplifier OP1 in the signal loading circuit D20. The signal loading circuit D20 loads the first touch detection signal of the touch detection signal terminal CS2 onto the privacy electrode 2051; thus, the privacy electrode 2051 has the first touch detection signal.

[0103] Secondly, after the first touch detection signal is loaded onto the privacy electrode 2051, the selection control switch SW1 in the switch control circuit D10 connects the privacy electrode 2051 and the touch detection circuit D30. Then, the touch detection circuit D30 determines the touch position based on the change of the first touch detection signal on the privacy electrode 2051.

[0104] For example, the touch detection circuit D30 can be used to determine whether the touch privacy panel is in a touch state, and when the touch privacy panel is in a touch state, the touch position can be determined;

[0105] When a user touches a certain intersection area of ​​the privacy panel, the capacitance value of the privacy electrode 2051 in that intersection area will increase, and the voltage value of the first touch detection signal on the privacy electrode 2051 will change. Since the privacy electrode 2051 is connected to the touch detection circuit D30 at this time, the touch detection circuit D30 can detect the change in the voltage value of the first touch detection signal on the privacy electrode 2051, thereby determining the touch position.

[0106] When the user does not touch the privacy panel, the capacitance value of the privacy electrode 2051 in the privacy panel will not change, and the voltage value of the first touch detection signal on the privacy electrode 2051 will not change either. Since the privacy electrode 2051 is connected to the touch detection circuit D30 at this time, the touch detection circuit D30 can detect that the voltage value of the first touch detection signal on the privacy electrode 2051 has not changed, thus determining that the privacy panel is not in a touch state.

[0107] Secondly, after the touch detection circuit D30 determines whether the touch privacy panel is in a touch state, the selection control switch SW1 in the switch control circuit D10 turns on the privacy electrode 2051 and the inverting amplifier OP1 in the signal loading circuit D20. The signal loading circuit D20 loads the first level signal of the privacy control signal terminal CS1 onto the privacy electrode 2051; then the touch privacy panel is in a privacy state. The privacy angle of the touch privacy panel is different depending on the voltage value of the first level signal loaded on the privacy electrode 2051.

[0108] Finally, after the first level signal is applied to the privacy electrode 2051, the selection control switch SW1 in the switch control circuit D10 is in the closed state, while the first level signal is maintained on the privacy electrode 2051, so that the touch privacy panel is in the privacy state.

[0109] It should be noted that, as Figure 15 As shown, the liquid crystal layer 203 contains many liquid crystal molecules. When there is no voltage difference between the first privacy electrode layer 204 and the second privacy electrode layer 205, that is, when the signal loading circuit D20 does not load the first level signal of the privacy control signal terminal CS1 onto the privacy electrode 2051, the liquid crystal molecules will not be deflected, that is, the light L is incident in parallel. After passing through the touch privacy panel 200, the light L is still emitted in parallel, that is, the touch privacy panel 200 does not activate the privacy function at this time.

[0110] like Figure 16 As shown, when the drive control circuit D starts working, that is, when the signal loading circuit D20 loads the first level signal of the privacy control signal terminal CS1 onto the privacy electrode 2051, there is a voltage difference between the privacy electrode 2051 in the first privacy electrode layer 204 and the second privacy electrode layer 205. This generates an electric field that drives the liquid crystal molecules to deflect. The strength of the electric field is related to the voltage difference between the first level signal and the common electrode voltage; the larger the voltage difference, the stronger the electric field. The light L is incident parallel to the touch privacy panel 200 and is refracted, thus changing the exit angle of the light L. This narrows the viewing angle of the display device, achieving privacy protection, preventing others from peeping at private information, and protecting the user's information security.

[0111] It should be noted that liquid crystal molecules are polar molecules containing polar groups, and they have a specific charge distribution. Under the influence of an electric field, the dipoles of liquid crystal molecules will align with the direction of the electric field, causing a change in the original arrangement of the liquid crystal molecules. This change in arrangement further alters the optical properties of the liquid crystal, which is the electro-optic effect of liquid crystals. To avoid damaging the properties of liquid crystal molecules, the driving voltage must be polarity-reversed; the driving voltage is divided into two polarities: positive and negative.

[0112] For example, in the first stage, the first touch detection signal and the first level signal are positive, and in the second stage, the second touch detection signal and the second level signal are negative; of course, in the first stage, the first touch detection signal and the first level signal can also be negative, and in the second stage, the second touch detection signal and the second level signal can also be positive; no specific limitation is made here.

[0113] In the second stage T2, firstly, a common electrode voltage is applied to the first privacy electrode layer 204, and then, the selection control switch SW1 in the switch control circuit D10 turns on the privacy electrode 2051 and the inverting amplifier OP1 in the signal loading circuit D20. The signal loading circuit D20 loads the second touch detection signal of the touch detection signal terminal CS2 onto the privacy electrode 2051; thus, the privacy electrode 2051 has the second touch detection signal.

[0114] Secondly, after the second touch detection signal is loaded onto the privacy electrode 2051, the selection control switch SW1 in the switch control circuit D10 connects the privacy electrode 2051 and the touch detection circuit D30. Then, the touch detection circuit D30 determines the touch position based on the change of the second touch detection signal on the privacy electrode 2051.

[0115] For example, the touch detection circuit D30 can be used to determine whether the touch privacy panel is in a touch state, and when the touch privacy panel is in a touch state, the touch position can be determined;

[0116] When a user touches a certain area of ​​the privacy panel, the capacitance of the privacy electrode 2051 in that area increases, and the voltage value of the second touch detection signal on the privacy electrode 2051 changes. Since the privacy electrode 2051 is connected to the touch detection circuit D30 at this time, the touch detection circuit D30 can detect the change in the voltage value of the second touch detection signal on the privacy electrode 2051, thereby determining the touch position.

[0117] When the user does not touch the privacy panel, the capacitance value of the privacy electrode 2051 in the privacy panel will not change, and the voltage value of the second touch detection signal on the privacy electrode 2051 will not change either. Since the privacy electrode 2051 is connected to the touch detection circuit D30 at this time, the touch detection circuit D30 can detect that the voltage value of the second touch detection signal on the privacy electrode 2051 has not changed, thus determining that the privacy panel is not in a touch state.

[0118] Secondly, after the touch detection circuit D30 determines whether the touch privacy panel is in a touch state, the selection control switch SW1 in the switch control circuit D10 turns on the privacy electrode 2051 and the inverting amplifier OP1 in the signal loading circuit D20. The signal loading circuit D20 loads the second level signal of the privacy control signal terminal CS1 onto the privacy electrode 2051; then the touch privacy panel is in a privacy state. The privacy angle of the touch privacy panel is different depending on the voltage value of the second level signal loaded on the privacy electrode 2051.

[0119] Finally, after the first level signal is loaded onto the privacy electrode 2051, the selection control switch SW1 in the switch control circuit D10 is in the closed state, while the second level signal is maintained on the privacy electrode 2051, so that the touch privacy panel is in the privacy state.

[0120] For example, such as Figure 17 As shown, the drive control circuit D performs a row-by-row scan of the privacy electrodes 2051 in the touch privacy panel, that is, it scans the first row A1, the second row B1, the third row C1, the fourth row D1, the fifth row E1, the sixth row F1, the seventh row G1, the eighth row H1, and the ninth row I1 in sequence; and after scanning the privacy electrodes 2051 in the intersection area of ​​the first row A1 and each column (i.e., A101-A1015), it scans the intersection area of ​​the second row B1 and each column (i.e., A101-A1015). The privacy electrodes 2051 in rows B101-B1015 are scanned, then the privacy electrodes 2051 in the intersection area of ​​the third row C1 with each column (i.e., C101-C1015) are scanned... then the privacy electrodes 2051 in the intersection area of ​​the eighth row H1 with each column (i.e., H101-H1015) are scanned, then the privacy electrodes 2051 in the intersection area of ​​the ninth row I1 with each column (i.e., I101-I1015) are scanned.

[0121] The following is based on Figure 6 Taking the display module shown as an example, combined with Figure 17 The signal timing diagram shown describes the working process of the display module provided in the embodiments of this disclosure.

[0122] While drive control circuits D-1 to D-15 scan the privacy electrode 2051 in the first row A1, drive control circuits D-1 to D-15 operate simultaneously. Specifically, drive control circuit D-1 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area A101 in a time-division manner; drive control circuit D-2 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area A102 in a time-division manner; and drive control circuit D-3 applies touch detection signals to the privacy electrode 2051 in the intersection area A103 in a time-division manner. The drive control circuit D-4 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A104 at different times; the drive control circuit D-5 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A105 at different times; the drive control circuit D-6 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A106 at different times; the drive control circuit D-7 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A107 at different times. The drive control circuit D-8 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A108 in a time-division manner; the drive control circuit D-9 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A109 in a time-division manner; the drive control circuit D-10 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A1010 in a time-division manner; the drive control circuit D-11 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area A1011 in a time-division manner; The motion control circuit D-12 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area A1012 in a time-division manner; the drive control circuit D-13 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area A1013 in a time-division manner; the drive control circuit D-14 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area A1014 in a time-division manner; and the drive control circuit D-15 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area A1015 in a time-division manner.

[0123] While drive control circuits D-1 to D-15 scan the privacy electrode 2051 in the second row B1, drive control circuits D-1 to D-15 operate simultaneously. Specifically, drive control circuit D-1 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area B101 in a time-division manner; drive control circuit D-2 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area B102 in a time-division manner; and drive control circuit D-3 applies touch detection signals to the privacy electrode 2051 in the intersection area B103 in a time-division manner. The drive control circuit D-4 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B104 at different times; the drive control circuit D-5 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B105 at different times; the drive control circuit D-6 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B106 at different times; the drive control circuit D-7 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B107 at different times. The drive control circuit D-8 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B108 in a time-division manner; the drive control circuit D-9 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B109 in a time-division manner; the drive control circuit D-10 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B1010 in a time-division manner; the drive control circuit D-11 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area B1011 in a time-division manner; The motion control circuit D-12 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area B1012 in a time-division manner; the drive control circuit D-13 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area B1013 in a time-division manner; the drive control circuit D-14 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area B1014 in a time-division manner; and the drive control circuit D-15 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area B1015 in a time-division manner.

[0124] While drive control circuits D-1 to D-15 scan the privacy electrode 2051 in the third row C1, drive control circuits D-1 to D-15 operate simultaneously. Specifically, drive control circuit D-1 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area C101 in a time-division manner; drive control circuit D-2 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area C102 in a time-division manner; and drive control circuit D-3 applies touch detection signals to the privacy electrode 2051 in the intersection area C103 in a time-division manner. The drive control circuit D-4 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C104 at different times; the drive control circuit D-5 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C105 at different times; the drive control circuit D-6 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C106 at different times; the drive control circuit D-7 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C107 at different times. The drive control circuit D-8 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C108 in a time-division manner; the drive control circuit D-9 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C109 in a time-division manner; the drive control circuit D-10 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C1010 in a time-division manner; the drive control circuit D-11 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area C1011 in a time-division manner; The motion control circuit D-12 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area C1012 in a time-division manner; the drive control circuit D-13 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area C1013 in a time-division manner; the drive control circuit D-14 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area C1014 in a time-division manner; the drive control circuit D-15 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area C1015 in a time-division manner.

[0125] ...While drive control circuits D-1 to D-15 scan the privacy electrode 2051 in row H1, drive control circuits D-1 to D-15 operate simultaneously. Specifically, drive control circuit D-1 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area H101 in a time-division manner; drive control circuit D-2 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area H102 in a time-division manner; and drive control circuit D-3 applies touch detection signals to the privacy electrode 2051 in the intersection area H103 in a time-division manner. The drive control circuit D-4 applies touch detection and privacy control signals to the privacy electrode 2051 in the cross area H104 at different times; the drive control circuit D-5 applies touch detection and privacy control signals to the privacy electrode 2051 in the cross area H105 at different times; the drive control circuit D-6 applies touch detection and privacy control signals to the privacy electrode 2051 in the cross area H106 at different times; the drive control circuit D-7 applies touch detection and privacy control signals to the privacy electrode 2051 in the cross area H107 at different times. The drive control circuit D-8 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H108 at different times; the drive control circuit D-9 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H109 at different times; the drive control circuit D-10 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H1010 at different times; the drive control circuit D-11 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H1011 at different times; drive The motion control circuit D-12 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H1012 in a time-division manner; the drive control circuit D-13 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H1013 in a time-division manner; the drive control circuit D-14 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H1014 in a time-division manner; and the drive control circuit D-15 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area H1015 in a time-division manner.

[0126] While drive control circuits D-1 to D-15 scan the privacy electrode 2051 in the ninth row I1, drive control circuits D-1 to D-15 operate simultaneously. Specifically, drive control circuit D-1 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area I101 in a time-division manner; drive control circuit D-2 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the intersection area I102 in a time-division manner; and drive control circuit D-3 applies touch detection signals to the privacy electrode 2051 in the intersection area I103 in a time-division manner. The drive control circuit D-4 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I104 at different times; the drive control circuit D-5 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I105 at different times; the drive control circuit D-6 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I106 at different times; the drive control circuit D-7 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I107 at different times. The drive control circuit D-8 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I108 in a time-division manner; the drive control circuit D-9 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I109 in a time-division manner; the drive control circuit D-10 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I1010 in a time-division manner; the drive control circuit D-11 applies touch detection signals and privacy control signals to the privacy electrode 2051 in the cross area I1011 in a time-division manner; The motion control circuit D-12 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area I1012 in a time-division manner; the drive control circuit D-13 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area I1013 in a time-division manner; the drive control circuit D-14 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area I1014 in a time-division manner; the drive control circuit D-15 applies touch detection signals and anti-peeping control signals to the anti-peeping electrode 2051 in the cross area I1015 in a time-division manner.

[0127] Among them, the voltage value of the anti-peeping control signal provided by drive control circuit D-1 is V1, the voltage value of the anti-peeping control signal provided by drive control circuit D-2 is V2, the voltage value of the anti-peeping control signal provided by drive control circuit D-3 is V3, the voltage value of the anti-peeping control signal provided by drive control circuit D-4 is V4, the voltage value of the anti-peeping control signal provided by drive control circuit D-5 is V5, the voltage value of the anti-peeping control signal provided by drive control circuit D-6 is V6, the voltage value of the anti-peeping control signal provided by drive control circuit D-7 is V7, the voltage value of the anti-peeping control signal provided by drive control circuit D-8 is V8, the voltage value of the anti-peeping control signal provided by drive control circuit D-9 is V9, the voltage value of the anti-peeping control signal provided by drive control circuit D-10 is V10, the voltage value of the anti-peeping control signal provided by drive control circuit D-11 is V11, the voltage value of the anti-peeping control signal provided by drive control circuit D-12 is V12, and the voltage value of the anti-peeping control signal provided by drive control circuit D-1... The voltage value of the anti-spy control signal provided by drive control circuit D-13 is V13, the voltage value of the anti-spy control signal provided by drive control circuit D-14 is V14, and the voltage value of the anti-spy control signal provided by drive control circuit D-15 is V15; the specific values ​​of V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, V14, and V15 can be set according to requirements. The voltage values ​​of V1, V2, V3, V4, V5, and V15 can be adjusted by controlling these voltages. The specific values ​​of V7, V8, V9, V10, V11, V12, V13, V14, and V15 can independently control the privacy angle of each intersection area (i.e., A101-A1015, B101-B1015, C101-C1015...H101-H1015, I101-I1015) in each row (A1-I1). In other words, the viewing angle of each intersection area in the touch privacy panel can be independently controlled, thereby achieving a four-sided privacy effect.

[0128] For example, the voltage values ​​of the touch detection signals provided by the drive control circuits D-1 to D-15 can be the same, and the specific values ​​can be set according to requirements.

[0129] Based on the same inventive concept, embodiments of the present invention also provide a display device, including the display module described above in the embodiments of the present invention. The principle by which this display device solves the problem is similar to that of the aforementioned display module; therefore, the implementation of this display device can refer to the implementation of the aforementioned display module, and the repeated parts will not be described again here.

[0130] In specific implementations, in the embodiments of the present invention, the display device can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator. Other essential components of the display device are those that should be understood by those skilled in the art, and will not be described in detail here, nor should they be construed as limiting the present invention.

[0131] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0132] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Therefore, if these modifications and variations to the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include these modifications and variations.

Claims

1. A display module, characterized in that, include: Display panel; A touch-sensitive privacy panel is located on the light-emitting side of the display panel; The touch privacy panel includes: a first substrate and a second substrate disposed opposite to each other; a liquid crystal layer located between the first substrate and the second substrate; a first privacy electrode layer located between the liquid crystal layer and the first substrate; and a second privacy electrode layer located between the liquid crystal layer and the second substrate. The second privacy electrode layer includes a plurality of privacy electrodes arranged in an array; The privacy electrode is reused as a touch electrode; Multiple drive control circuits, with a row of privacy electrodes electrically connected to the same drive control circuit, the drive control circuit being configured to provide privacy control signals and touch detection signals to the privacy electrodes; The drive control circuit includes: a signal loading circuit, a touch detection circuit, and a switch control circuit; The signal loading circuit and the touch detection circuit are respectively electrically connected to the same privacy electrode through the switch control circuit. The switch control circuit is configured to control the privacy electrode to be connected to the signal loading circuit or to control the privacy electrode to be connected to the touch detection circuit. When the privacy electrode is connected to the signal loading circuit, the signal loading circuit is configured to load the privacy control signal from the privacy control signal terminal to the privacy electrode, and to load the touch detection signal from the touch detection signal terminal to the privacy electrode. When the privacy electrode is connected to the touch detection circuit, the touch detection circuit is configured to determine the touch position based on the change of the touch detection signal on the privacy electrode.

2. The display module as described in claim 1, characterized in that, The signal loading circuit includes: an inverting amplifier, a first resistor, a second resistor, and a first capacitor; The first terminal of the inverting amplifier is electrically connected to the switch control circuit, the second terminal of the inverting amplifier is electrically connected to the first terminal of the first resistor, and the third terminal of the inverting amplifier is electrically connected to the privacy control signal terminal. The second end of the first resistor is electrically connected to the first electrode of the first capacitor; The second electrode of the first capacitor is electrically connected to the touch detection signal terminal; The first end of the second resistor is electrically connected to the first end of the inverting amplifier, and the second end of the second resistor is electrically connected to the second end of the inverting amplifier.

3. The display module as described in claim 1, characterized in that, The switch control circuit includes: a selection control switch, a third resistor, and a second capacitor; The first terminal of the selection control switch is electrically connected to the first terminal of the third resistor, the second terminal of the selection control switch is electrically connected to the signal loading circuit, and the third terminal of the selection control switch is electrically connected to the touch detection circuit. The second end of the third resistor is electrically connected to the privacy electrode. The first electrode of the second capacitor is electrically connected to the privacy electrode, and the second electrode of the second capacitor is grounded.

4. The display module as described in any one of claims 1-3, characterized in that, The touch privacy panel further includes: a first conductive layer and a first insulating layer; The first conductive layer is located between the second substrate and the first insulating layer; The first insulating layer is located between the second privacy electrode layer and the first conductive layer; The first conductive layer includes multiple first signal lines, and one of the privacy electrodes is electrically connected to the drive control circuit through one of the first signal lines.

5. The display module as described in claim 4, characterized in that, Also includes: A driving circuit board, wherein the plurality of driving control circuits are disposed on the driving circuit board and are electrically connected to the first signal line in the first conductive layer of the touch privacy panel via a second signal line.

6. A display device, characterized in that, Includes the display module as described in any one of claims 1-5.

7. A driving method for a display module as described in any one of claims 1-5, characterized in that, include: It drives the display panel to display images and drives the touch privacy panel to operate. The operation of the drive-controlled privacy panel includes: During at least one driving cycle, a common electrode voltage is applied to the first privacy electrode layer, and the driving control circuit applies a touch detection signal and a privacy control signal to the privacy electrode in a time-division manner; the touch detection signal is a pulse signal, and the privacy control signal is a fixed level signal.

8. The driving method as described in claim 7, characterized in that, The driving cycle includes a first stage and a second stage; the touch detection signal includes a first touch detection signal and a second touch detection signal; the fixed level signal includes a first level signal and a second level signal. In the first stage, a common electrode voltage is applied to the first privacy electrode layer, and the drive control circuit applies a first touch detection signal and a first level signal to the privacy electrode in a time-division manner. In the second stage, a common electrode voltage is applied to the first privacy electrode layer, and the drive control circuit applies a second touch detection signal and a second level signal to the privacy electrode in a time-division manner.

9. The driving method as described in claim 8, characterized in that, In the first and second stages, the signal loading circuit loads the touch detection signal from the touch detection signal terminal onto the privacy electrode, and the touch detection circuit determines the touch position based on the change of the touch detection signal on the privacy electrode; the signal loading circuit loads the privacy control signal from the privacy control signal terminal onto the privacy electrode.

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