Touch control circuit and aerosol generating device

Abstract

The utility model relates to the technical field of aerosol generation, and particularly discloses a touch control circuit and an aerosol generation device. The touch control circuit comprises more than two sensing elements, and the sensing elements are configured to respond to touch actions and generate sensing signals; the detection circuit is provided with signal ports correspondingly connected with more than two sensing elements, and the detection circuit is configured to detect signal port information and time information of the sensing signals received by the signal ports and output driving signals based on the time information, the driving signal comprises the induction signal and signal port information corresponding to the induction signal; and the controller is connected with the detection circuit, and the controller is configured to control execution of a preset function or switching of a preset mode according to the driving signal. In this way, the control mode of the electronic cigarette can be simplified, and therefore the user experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of aerosol generation, and in particular to a touch control circuit and an aerosol generating device. Background Art

[0002] Typical aerosol generating devices include electronic cigarettes. With the continuous development of the electronic cigarette industry, electronic cigarettes have more and more functions and modes. As an example of the existing technology, different button controls are used to execute preset functions or switch preset modes, which makes the control method complicated and reduces the user experience. Utility Model Content

[0003] The main technical problem solved by this application is to provide a touch control circuit and an aerosol generating device, which can simplify the control method of the electronic cigarette and thus improve the user experience.

[0004] An embodiment of the present application provides a touch control circuit, including:

[0005] Two or more sensing elements, each configured to generate a sensing signal in response to a touch action;

[0006] a detection circuit, provided with signal ports correspondingly connected to two or more of the sensing elements, the detection circuit being configured to detect signal port information and time information of when the signal port receives the sensing signal, and output a driving signal based on the time information, the driving signal including the sensing signal and the signal port information corresponding to the sensing signal;

[0007] A controller is connected to the detection circuit, and is configured to control the execution of a preset function or switch a preset mode according to the driving signal.

[0008] Optionally, the detection circuit includes:

[0009] a touch detection circuit, provided with a signal port correspondingly connected to the two or more sensing elements, the touch detection circuit being configured to receive the sensing signal through the signal port and detect signal port information and time information when the signal port receives the sensing signal;

[0010] A driving circuit is connected to the touch detection circuit and the controller respectively, and is configured to output the driving signal to the controller based on the time information.

[0011] Optionally, the touch detection circuit includes:

[0012] a touch detection chip, provided with signal ports correspondingly connected to two or more of the sensing elements, the touch detection chip being connected to the driving circuit, and configured to receive the sensing signal through the signal port and detect signal port information corresponding to the sensing signal;

[0013] A timer is connected to the touch detection chip, and the timer is configured to detect time information when the signal port receives the sensing signal.

[0014] Optionally, the touch control circuit further includes a heating element, which is connected to the controller and configured to start or stop heating in response to the control of the controller when the controller controls the execution of a preset function or switches a preset mode.

[0015] Optionally, the touch control circuit further includes a display circuit, which is connected to the controller, and the display circuit is configured to display a preset pattern in response to the control of the controller when the controller controls the execution of a preset function or switches a preset mode.

[0016] Optionally, the touch control circuit further includes a battery cell, which is connected to the controller for providing power.

[0017] Optionally, the number of the more than two sensing elements is three, the detection circuit is provided with three signal ports, and the three sensing elements are correspondingly connected to the three signal ports.

[0018] The present invention provides an aerosol generating device, comprising:

[0019] The shell is at least partially in the shape of a round rod, and the shell in the round rod-shaped portion is provided with a window;

[0020] a transparent cover plate installed in the window, the transparent cover plate being flush with the outer surface of the housing in the round rod-shaped portion, and the transparent cover plate being configured to receive a user touch;

[0021] In the touch control circuit as described in any embodiment of the present application, the detection circuit and the two or more sensing elements are located on a flexible circuit board, and the flexible circuit board is arranged in close contact with the side of the transparent cover away from the outer surface of the shell, and the flexible circuit board has a curved surface that is adapted to the transparent cover.

[0022] Optionally, if the touch control circuit includes a display circuit, the display circuit includes:

[0023] An LED array connected to the controller, wherein when the controller controls to execute a preset function or switch a preset mode, a target LED in the LED array is turned on or off in response to the control of the controller;

[0024] The light-shielding film is provided with an array of light-transmitting holes for transmitting light from the LED array, and the light-shielding film is configured to display a preset pattern on the transparent cover through the array of light-transmitting holes.

[0025] Optionally, the light shielding film is arranged between the LED array and the flexible circuit board, and the light shielding film is arranged closely to the side of the flexible circuit board away from the transparent cover plate, and the light shielding film has a curved surface shape adapted to the flexible circuit board.

[0026] In an embodiment of the present application, a sensing signal is generated by two or more sensing elements in response to a touch action, and a detection circuit is provided with signal ports corresponding to the two or more sensing elements. The detection signal port receives the signal port information and time information of the sensing signal, and outputs a driving signal including the sensing signal and its corresponding signal port information based on the time information. The controller controls the execution of a preset function or the switching of a preset mode according to the driving signal, thereby simplifying the control method of the electronic cigarette and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0028] Figure 1 1 is a schematic structural diagram of a touch control circuit provided in an embodiment of the present application;

[0029] Figure 2 1 is a schematic structural diagram of a touch control circuit provided in an embodiment of the present application;

[0030] Figure 3 1 is a schematic structural diagram of a touch control circuit provided in an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of a touch path of three sensing elements provided in an embodiment of the present application;

[0032] Figure 5 It is a structural schematic diagram of an aerosol generating device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] In order to facilitate the understanding of the present application, the present application is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "locked to" another element, it can be directly on the other element, or there can be one or more centered elements between them. When an element is described as "connected to" another element, it can be directly connected to the other element, or there can be one or more centered elements between them. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are for illustrative purposes only.

[0034] Unless otherwise defined, all technical and scientific terms used in this specification have the same meanings as those commonly understood by those skilled in the art to which this application belongs. The terms used in this specification and in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" as used in this specification includes any and all combinations of one or more of the relevant listed items.

[0035] See also Figures 1-4 The touch control circuit 100 includes two or more sensing elements 10 , a detection circuit 20 and a controller 30 .

[0036] The sensing element 10 is configured to generate a sensing signal in response to a touch action.

[0037] In one example, the sensing element 10 may be a capacitive sensing element or a resistive sensing element.

[0038] If the sensing element 10 is a capacitive sensing element, it includes sensing electrodes, each corresponding to a touch area. The touch area can be labeled to indicate the user's presence. The touch area and the sensing electrodes form a sensing capacitor. When a user touches a touch area corresponding to a sensing element 10, the sensing capacitor formed by the touch area and the sensing electrode changes, causing the sensing signal generated by the sensing element 10 to change accordingly, making it detectable. For example, the sensing signal includes a current signal.

[0039] The detection circuit 20 is provided with a signal port 201 correspondingly connected to two or more sensing elements 10. The detection circuit 20 is configured to detect the signal port information and time information of the signal port 201 receiving the sensing signal, and output a driving signal based on the time information. The driving signal includes the sensing signal and the signal port information corresponding to the sensing signal.

[0040] In one embodiment, the number of the at least two sensing elements 10 is three, the detection circuit 20 is provided with three signal ports 201 , and the three sensing elements 10 are connected to the three signal ports 201 correspondingly.

[0041] For example, the sensing element 10 includes sensing electrodes. The three sensing elements 10 include a first sensing electrode, a second sensing electrode, and a third sensing electrode. Signal port 201 serves as the input port of detection circuit 20. The three signal ports 201 include the first signal port, the second signal port, and the third signal port. The corresponding connections are as follows: the first sensing electrode is connected to the first signal port, the second sensing electrode is connected to the second signal port, and the third sensing electrode is connected to the third signal port. Accordingly, the sensing signal generated by the first sensing electrode is input to detection circuit 20 via the first signal port, the sensing signal generated by the second sensing electrode is input to detection circuit 20 via the second signal port, and the sensing signal generated by the third sensing electrode is input to detection circuit 20 via the third signal port.

[0042] In some embodiments, the detection circuit 20 includes a touch detection circuit 21 and a driving circuit 22 .

[0043] The touch detection circuit 21 is provided with a signal port 201 correspondingly connected to two or more sensing elements 10 . The touch detection circuit 21 is configured to receive a sensing signal through the signal port 201 and detect the signal port information and time information when the signal port 201 receives the sensing signal.

[0044] In some embodiments, the touch detection circuit 21 includes a touch detection chip 211 and a timer 212 .

[0045] The touch detection chip 211 is provided with a signal port 201 correspondingly connected to two or more sensing elements 10. The touch detection chip 211 is connected to the driving circuit 22. The touch detection chip 211 is configured to receive the sensing signal through the signal port 201 and detect the signal port information corresponding to the sensing signal.

[0046] The timer 212 is connected to the touch detection chip 211 , and is configured to detect time information when the signal port 201 receives the sensing signal.

[0047] It can be understood that in some embodiments, the touch detection circuit 21 includes a touch detection chip 211 and its peripheral circuits. The touch detection chip 211 is provided with a signal port 201 corresponding to two or more sensing elements 10. The touch detection chip 211 is configured to receive the sensing signal through the signal port 201 and detect the signal port information and time information of the sensing signal received by the signal port 201, that is, the touch detection chip 211 has a built-in timing function.

[0048] The driving circuit 22 is connected to the touch detection circuit 21 and the controller 30 , respectively. The driving circuit 22 is configured to output a driving signal to the controller 30 based on time information.

[0049] In one example, the driving circuit 22 is configured to output a driving signal to the controller 30 based on the order in which the sensing signals are received by the signal port 201 .

[0050] The controller 30 is connected to the detection circuit 20 , and is configured to control the execution of a preset function or switch a preset mode according to the driving signal.

[0051] like Figure 4 As shown, the two or more sensing elements 10 include sensing element 10a, sensing element 10b and sensing element 10c, and the touch detection chip 211 includes signal port 201a, signal port 201b and signal port 201c (not shown).

[0052] exist Figure 4 In a, the user slides on the corresponding touch area in the order of sensing element 10a, sensing element 10b, and sensing element 10c. Specifically, sensing element 10a generates a first sensing signal in response to the touch action, signal port 201a receives the first sensing signal, touch detection chip 211 detects the first signal port information corresponding to the first sensing signal, and timer 212 detects the first time when signal port 201a receives the first sensing signal; sensing element 10b generates a second sensing signal in response to the touch action, signal port 201b receives the second sensing signal, touch detection chip 211 detects the second signal port information corresponding to the second sensing signal, and timer 212 detects the second time when signal port 201b receives the second sensing signal; sensing element 10c generates a third sensing signal in response to the touch action, signal port 201a receives the third sensing signal, and timer 212 detects the second time when signal port 201b receives the third sensing signal. 201c receives the third sensing signal, the touch detection chip 211 detects the third signal port information corresponding to the third sensing signal, and the timer 212 detects the third time when the signal port 201c receives the third sensing signal; the driving circuit 22 outputs the first driving signal (including the first sensing signal and the first signal port information), the second driving signal (including the second sensing signal and the second signal port information) and the third driving signal (including the third sensing signal and the third signal port information) to the controller 30 based on the time sequence of the first time, the second time and the third time; the controller 30 controls the aerosol generating device to start the heating function according to the first driving signal, the second driving signal and the third driving signal.

[0053] exist Figure 4In b, the user slides on the corresponding touch areas in the order of sensing element 10c, sensing element 10b and sensing element 10a. Specifically, the sensing element 10c generates a first sensing signal in response to the touch action, the signal port 201c receives the first sensing signal, the touch detection chip 211 detects first signal port information corresponding to the first sensing signal, and the timer 212 detects a first time when the signal port 201c receives the first sensing signal; the sensing element 10b generates a second sensing signal in response to the touch action, the signal port 201b receives the second sensing signal, the touch detection chip 211 detects second signal port information corresponding to the second sensing signal, and the timer 212 detects a second time when the signal port 201b receives the second sensing signal; the sensing element 10a generates a third sensing signal in response to the touch action, the signal port 201a receives the third sensing signal, the touch detection chip 211 detects third signal port information corresponding to the third sensing signal, and the timer 212 detects a third time when the signal port 201a receives the third sensing signal; the drive circuit 22 outputs a first drive signal, a second drive signal, and a third drive signal to the controller 30 based on the time sequence of the first time, the second time, and the third time; the controller 30 controls the aerosol generating device to suspend the heating function according to the first drive signal, the second drive signal, and the third drive signal.

[0054] exist Figure 4 In c, the user slides on the corresponding touch area in the order of sensing element 10c, sensing element 10b, and sensing element 10c. Specifically, sensing element 10c generates a first sensing signal in response to the touch action, signal port 201c receives the first sensing signal, touch detection chip 211 detects the first signal port information corresponding to the first sensing signal, and timer 212 detects the first time when signal port 201c receives the first sensing signal; sensing element 10b generates a second sensing signal in response to the touch action, signal port 201b receives the second sensing signal, touch detection chip 211 detects the second signal port information corresponding to the second sensing signal, and timer 212 detects the second time when signal port 201b receives the second sensing signal; sensing element 10b generates a second sensing signal in response to the touch action, signal port 201b receives the second sensing signal, touch detection chip 211 detects the second signal port information corresponding to the second sensing signal, and timer 212 detects the second time when signal port 201b receives the second sensing signal; 0c generates a third sensing signal in response to the touch action, the signal port 201c receives the third sensing signal, the touch detection chip 211 detects the third signal port information corresponding to the third sensing signal, and the timer 212 detects the third time when the signal port 201c receives the third sensing signal; the driving circuit 22 outputs the first driving signal, the second driving signal and the third driving signal to the controller 30 in the order of the first time, the second time and the third time; the controller 30 controls the aerosol generating device to enter the child lock mode according to the first driving signal, the second driving signal and the third driving signal, and prohibits the aerosol generating device from being turned on.

[0055] exist Figure 4In Figure d, the user slides on the corresponding touch area in the order of sensing element 10a, sensing element 10b, and sensing element 10a. Specifically, sensing element 10a generates a first sensing signal in response to the touch action, signal port 201a receives the first sensing signal, touch detection chip 211 detects the first signal port information corresponding to the first sensing signal, and timer 212 detects the first time when signal port 201a receives the first sensing signal; sensing element 10b generates a second sensing signal in response to the touch action, signal port 201b receives the second sensing signal, touch detection chip 211 detects the second signal port information corresponding to the second sensing signal, and timer 212 detects the second time when signal port 201b receives the second sensing signal; sensing element 10b generates a second sensing signal in response to the touch action, signal port 201b receives the second sensing signal, touch detection chip 211 detects the second signal port information corresponding to the second sensing signal, and timer 212 detects the second time when signal port 201b receives the second sensing signal; a generates a third sensing signal in response to the touch action, the signal port 201a receives the third sensing signal, the touch detection chip 211 detects the third signal port information corresponding to the third sensing signal, and the timer 212 detects the third time when the signal port 201a receives the third sensing signal; the driving circuit 22 outputs the first driving signal, the second driving signal, and the third driving signal to the controller 30 based on the time sequence of the first time, the second time, and the third time; the controller 30 controls the aerosol generating device to release / exit the child lock mode according to the first driving signal, the second driving signal, and the third driving signal, allowing the aerosol generating device to be turned on.

[0056] It is understood that the embodiment of the present application is not limited to sliding on the touch areas corresponding to more than two sensing elements 10. For example, within a preset time, the user clicks the touch areas corresponding to the sensing element 10a, the sensing element 10b and the sensing element 10c respectively.

[0057] It can be understood that the number of driving signals is not limited and can be determined based on the number of continuous slides on the touch areas corresponding to more than two sensing elements 10. For example, if the user continuously slides on the corresponding touch areas in the order of sensing element 10a, sensing element 10b, sensing element 10c and sensing element 10a, the number of driving signals output by the driving circuit 22 to the controller 30 is 4. At this time, the number of driving signals is not equal to the number of sensing elements 10 or the number of signal ports 201.

[0058] In some embodiments, the touch control circuit 100 further includes a heating element 40 , which is connected to the controller 30 . The heating element 40 is configured to start or stop heating in response to the control of the controller 30 when the controller 30 controls the execution of a preset function or switches a preset mode.

[0059] In some embodiments, the touch control circuit 100 further includes a display circuit 50 , which is connected to the controller 30 . The display circuit 50 is configured to display a preset pattern in response to the control of the controller 30 when the controller 30 controls the execution of a preset function or switches a preset mode.

[0060] For example, when the controller 30 controls the aerosol generating device to activate the heating function, the display circuit 50 displays a "flame" pattern to prompt the user that the aerosol generating device has activated the heating function. For another example, when the controller 30 controls the aerosol generating device to enter the child lock mode, the display circuit 50 displays a "lock" pattern to prompt the user that the aerosol generating device is currently operating in the child lock mode.

[0061] By displaying corresponding patterns in different preset functions or preset modes through the display circuit 50, human-computer interaction is effectively achieved and user experience is improved.

[0062] In some embodiments, the touch control circuit 100 further includes a battery cell 60 , which is connected to the controller 30 to provide power.

[0063] The touch control circuit provided in the embodiment of the present application generates a sensing signal in response to a touch action through two or more sensing elements. The detection circuit is provided with a signal port corresponding to the two or more sensing elements. The detection signal port receives the signal port information and time information of the sensing signal, and outputs a driving signal including the sensing signal and its corresponding signal port information based on the time information. The controller controls the execution of a preset function or the switching of a preset mode according to the driving signal, thereby simplifying the control method of the electronic cigarette and improving the user experience.

[0064] See also Figure 5 , is a schematic diagram of the structure of an aerosol generating device provided in an embodiment of the present application. Figure 5 As shown, the aerosol generating device 200 includes a housing 210 , a transparent cover 220 , and a touch control circuit 100 as described in any embodiment of the present application.

[0065] The housing 210 is at least partially in the shape of a round rod, and a window is formed in the round rod-shaped portion of the housing.

[0066] In one example, the aerosol generating device 200 is a round rod-shaped device, and the overall shape of the housing 210 is round rod-shaped.

[0067] The transparent cover plate 220 is installed in the window. The transparent cover plate 220 is flush with the outer surface of the housing in the round rod-shaped portion. The transparent cover plate 220 is configured to receive a user's touch.

[0068] The touch areas corresponding to the two or more sensing elements 10 are located in the transparent cover 220. The transparent cover 220 is hermetically sealed.

[0069] Touch control is achieved through the transparent cover 220 without opening holes in the housing 210, making the aerosol generating device 200 waterproof and dustproof, easy to clean, and avoiding the problem of long-term operation of mechanical switches causing wear and shortening the life of the aerosol generating device 200 components.

[0070] As in the touch control circuit 100 described in any embodiment of the present application, the detection circuit 20 and the two or more sensing elements 10 are located on the flexible circuit board 230. The flexible circuit board 230 is arranged in close contact with the side of the outer surface of the transparent cover plate 220 away from the housing 210. The flexible circuit board 230 has a curved surface that adapts to the transparent cover plate 220.

[0071] On the basis of the above embodiment, if the touch control circuit 100 includes a display circuit 50 , the display circuit 50 includes an LED array 51 and a light shielding film 52 .

[0072] The LED array 51 is connected to the controller 30 . The LED array 51 is configured so that when the controller 30 controls to execute a preset function or switch a preset mode, the target LEDs in the LED array 51 are turned on or off in response to the control of the controller 30 .

[0073] The light shielding film 52 is provided with a light-transmitting hole array 521 for transmitting light from the LED array 51 . The light shielding film 52 is configured to display a preset pattern on the transparent cover through the light-transmitting hole array 521 .

[0074] In some embodiments, the light shielding film 52 is disposed between the LED array 51 and the flexible circuit board 230 , and is disposed close to the side of the flexible circuit board 230 away from the transparent cover 220 . The light shielding film 52 is curved to match the flexible circuit board 220 .

[0075] In summary, the transparent cover 220, the flexible circuit board 230, the light-shielding film 52, and the LED array 51 form a stacked structure. Since the flexible circuit board 230 is flexible and can withstand bending at a large angle, the stacked structure is applied to the aerosol generating device 200 with a curved shell 210. This can realize the functions of the touch control circuit 100 described in any embodiment of the present application, and at the same time avoid the problem of the internal conductive material being easily broken after the flat touch screen is bent, resulting in touch sensing failure.

[0076] It should be noted that the preferred embodiments of the present application are given in the specification and drawings of this application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments are not intended to be additional limitations on the content of this application. The purpose of providing these embodiments is to make the understanding of the disclosure of this application more thorough and comprehensive. In addition, the above-mentioned technical features can be combined with each other to form various embodiments not listed above, which are all considered to be within the scope of the description of this application; further, it is obvious to those skilled in the art that improvements or changes can be made based on the above description, and all such improvements and changes should fall within the scope of protection of the claims attached to this application.

Claims

1. A touch control circuit, characterized in that: include: Two or more sensing elements, each configured to generate a sensing signal in response to a touch action; a detection circuit, provided with signal ports correspondingly connected to two or more of the sensing elements, the detection circuit being configured to detect signal port information and time information of when the signal port receives the sensing signal, and output a driving signal based on the time information, the driving signal including the sensing signal and the signal port information corresponding to the sensing signal; A controller is connected to the detection circuit, and is configured to control the execution of a preset function or switch a preset mode according to the driving signal.

2. The touch control circuit according to claim 1, wherein: The detection circuit comprises: a touch detection circuit, provided with a signal port correspondingly connected to the two or more sensing elements, the touch detection circuit being configured to receive the sensing signal through the signal port and detect signal port information and time information when the signal port receives the sensing signal; A driving circuit is connected to the touch detection circuit and the controller respectively, and is configured to output the driving signal to the controller based on the time information.

3. The touch control circuit according to claim 2, wherein: The touch detection circuit includes: a touch detection chip, provided with signal ports correspondingly connected to two or more of the sensing elements, the touch detection chip being connected to the driving circuit, and configured to receive the sensing signal through the signal port and detect signal port information corresponding to the sensing signal; A timer is connected to the touch detection chip, and the timer is configured to detect time information when the signal port receives the sensing signal.

4. The touch control circuit according to claim 1, wherein: The touch control circuit further includes a heating element connected to the controller. The heating element is configured to start or stop heating in response to control of the controller when the controller controls the execution of a preset function or the switching of a preset mode.

5. The touch control circuit according to claim 4, wherein: The touch control circuit further includes a display circuit connected to the controller. The display circuit is configured to display a preset pattern in response to control of the controller when the controller controls the execution of a preset function or the switching of a preset mode.

6. The touch control circuit according to any one of claims 1 to 5, characterized in that: The touch control circuit further includes a battery cell, which is connected to the controller and is used to provide power.

7. The touch control circuit according to claim 1, wherein: The number of the two or more sensing elements is three, the detection circuit is provided with three signal ports, and the three sensing elements are correspondingly connected to the three signal ports.

8. An aerosol generating device, characterized in that: include: The shell is at least partially in the shape of a round rod, and the shell in the round rod-shaped portion is provided with a window; a transparent cover plate installed in the window, the transparent cover plate being flush with the outer surface of the housing in the round rod-shaped portion, and the transparent cover plate being configured to receive a user touch; The touch control circuit according to any one of claims 1 to 7, wherein the detection circuit and the two or more sensing elements are located on a flexible circuit board, the flexible circuit board is arranged in close contact with the side of the transparent cover away from the outer surface of the housing, and the flexible circuit board has a curved surface that adapts to the transparent cover.

9. The aerosol generating device according to claim 8, characterized in that If the touch control circuit includes a display circuit, the display circuit includes: An LED array connected to the controller, wherein when the controller controls to execute a preset function or switch a preset mode, a target LED in the LED array is turned on or off in response to the control of the controller; The light-shielding film is provided with an array of light-transmitting holes for transmitting light from the LED array, and the light-shielding film is configured to display a preset pattern on the transparent cover through the array of light-transmitting holes.

10. The aerosol generating device according to claim 9, characterized in that The light shielding film is arranged between the LED array and the flexible circuit board, and is arranged closely to the side of the flexible circuit board away from the transparent cover plate. The light shielding film is in a curved shape adapted to the flexible circuit board.

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