Display apparatus and control method thereof

Abstract

The invention provides a display device and a control method thereof, and relates to the technical field of display, and the display device comprises a display panel, a cover plate, a detection structure and a measurement unit; the cover plate is positioned on one side of the light-emitting surface of the display panel; the detection structure is fixed on the second surface, close to the display panel, of the cover plate; the display panel comprises a display area and a non-display area surrounding the display area, and the detection structure and the non-display area are at least partially overlapped; the measuring unit is electrically connected with the detection structure, and the measuring unit is at least configured to measure the capacitance value of the detection structure. The detection structure and the measurement unit are arranged to detect the obstacle, when the obstacle approaches the display panel and does not make contact with the display panel, the capacitance of the detection structure changes, the measurement unit can obtain the capacitance change of the detection structure, and when the obstacle does not make contact with the display panel, the obstacle can be detected. Therefore, the display panel can be prevented from being damaged by obstacles, and the clamping risk is reduced.

Description

Technical Field

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

[0002] With the development of display technology, display products are being used in various industries. In some scenarios, such as in-vehicle ceiling displays, these products can automatically flip over during use. These products typically use an electric drive mechanism to achieve rotation or angle adjustment. During this process, if an obstacle unexpectedly appears in the screen's path, it could pose a risk of pinching or damage the device. Summary of the Invention

[0003] In order to solve the above technical problems, the present disclosure provides a display device and a control method thereof, which are helpful in preventing the display device from being damaged by obstacles and reducing the risk of pinching.

[0004] In a first aspect, the present disclosure provides a display device, comprising:

[0005] A display panel, the display panel comprising a display area and a non-display area surrounding the display area;

[0006] a cover plate, the cover plate being located on a side of the light emitting surface of the display panel, the cover plate comprising a first surface and a second surface, the second surface being close to the display panel;

[0007] a detection structure, the detection structure being fixed to the second surface of the cover plate, the detection structure at least partially overlapping with the non-display area;

[0008] A measuring unit is electrically connected to the detection structure, and the measuring unit is at least configured to measure a capacitance value of the detection structure.

[0009] In a second aspect, based on the same inventive concept, the present disclosure provides a method for controlling a display device, for controlling the display device, the control method comprising:

[0010] determining that the display device is in a flipped state;

[0011] The measuring unit determines the capacitance value of the detection structure;

[0012] It is determined whether an obstacle is approaching the detection structure according to the capacitance value.

[0013] The technical solution provided by the embodiments of the present disclosure has the following advantages over the prior art:

[0014] The present disclosure provides a display device and a control method thereof, wherein the display device includes a display panel, a cover plate, a detection structure, and a measurement unit; the cover plate is located on a light-emitting surface side of the display panel; the cover plate includes a first surface and a second surface, the second surface being closer to the display panel; the detection structure is fixed to the second surface of the cover plate; the display panel includes a display area and a non-display area surrounding the display area, the detection structure and the non-display area at least partially overlapping; the measurement unit is electrically connected to the detection structure, and the measurement unit is configured to measure at least the capacitance value of the detection structure. The present disclosure detects obstacles by providing a detection structure and a measurement unit. When an obstacle approaches the display panel but does not contact the display panel, the capacitance of the detection structure changes. The measurement unit can obtain the capacitance change of the detection structure and detect the obstacle when it does not contact the display panel. When the obstacle is a sharp object, since the mechanical strength of the light-emitting surface side of the display panel is relatively weak, the obstruction of the sharp object may cause damage to the display panel; when the obstacle is a finger, the flipping of the display panel may create a risk of pinching the finger. The present disclosure can detect obstacles when the obstacles do not contact the display panel, thereby preventing the display panel from being damaged by the obstacles and reducing the risk of pinching. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0016] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 FIG2 is a schematic plan view of a display device provided by an embodiment of the present disclosure;

[0018] Figure 2 Shown is a schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0019] Figure 3 FIG2 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0020] Figure 4 FIG2 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0021] Figure 5 FIG2 is another schematic plan view of a display device provided by an embodiment of the present disclosure;

[0022] Figure 6FIG2 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0023] Figure 7 FIG2 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0024] Figure 8 FIG2 is a schematic diagram showing a connection between a detection structure and a flexible circuit board provided in an embodiment of the present disclosure;

[0025] Figure 9 FIG2 is another schematic plan view of a display device provided by an embodiment of the present disclosure;

[0026] Figure 10 FIG2 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0027] Figure 11 FIG2 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0028] Figure 12 FIG2 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure;

[0029] Figure 13 FIG2 is a side view of a display device provided by an embodiment of the present disclosure;

[0030] Figure 14 FIG2 is a flow chart of a method for controlling a display device according to an embodiment of the present disclosure;

[0031] Figure 15 FIG2 is another flow chart of a method for controlling a display device according to an embodiment of the present disclosure;

[0032] Figure 16 Shown Figure 15 A detailed flow chart of step S30 in FIG. DETAILED DESCRIPTION

[0033] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

[0034] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0035] The inventors discovered during their research that in some usage scenarios (such as car-mounted ceiling displays), the display device has an automatic flipping state during use. During this process, if an obstacle unexpectedly appears in the screen's moving path, it may cause a risk of pinching or damage to the equipment. In related technologies, a hinge is used at one end of the display device to control the opening and closing of the display screen. When an object obstructs the screen from flipping, the motor of the hinge will increase the driving current due to the increase in torque. The driving current is detected by the control unit. When it is detected that the driving current is greater than the set threshold, it is considered that an object is obstructing the screen from flipping, and the flipping action is stopped. This method of detecting obstacles has a large delay, and the object can only be detected after it has actually been clamped and obstructs the screen from flipping.

[0036] In view of this, the present disclosure provides a display device and a control method thereof, which are beneficial for preventing the display device from being damaged by obstacles and reducing the risk of pinching.

[0037] Figure 1 FIG. 1 is a schematic plan view of a display device provided by an embodiment of the present disclosure. Figure 2 FIG2 is a schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure, please refer to FIG2 Figure 1 and Figure 2 The present disclosure provides a display device 100, including: a display panel 10, the display panel 10 includes a cover plate 11, the cover plate 11 is located on the light-emitting side of the display panel 10; the cover plate 11 includes a first surface 111 and a second surface 112, the second surface 112 is close to the display panel 10; a detection structure 20, the detection structure 20 is fixed to the second surface 112 of the cover plate 11; the display panel 10 includes a display area AA and a non-display area NA surrounding the display area AA, the detection structure 20 at least partially overlaps with the non-display area NA; a measuring unit 30, the measuring unit 30 is electrically connected to the detection structure 20, and the measuring unit 30 is at least configured to measure the capacitance value of the detection structure 20.

[0038] It should be noted that the drawings in this disclosure are for illustration only and do not represent the actual structure of the display device 100. Figure 1 The rectangular display device 100 is used as an example for illustration, but the invention is not limited thereto. The display device 100 may also be any feasible shape such as a circle or a rounded rectangle. For another example, Figure 1 The measurement unit 30 is only indicated by a rectangular frame, which does not represent the actual shape, size and position of the measurement unit 30.

[0039] Specifically, the present disclosure provides a display device 100, which includes a display panel 10, a cover plate 11, a detection structure 20, and a measurement unit 30. Optionally, the display panel 10 can be any one of a variety of display panels such as an LCD (Liquid Crystal Display) panel, an OLED (Organic Light-Emitting Diode) display panel, a Micro LED (Micro Light Emitting Diode) display panel, etc., and the present disclosure does not make specific limitations. The drawings of the present disclosure illustrate the display panel 10 as a liquid crystal display panel 10, but are not limited to this. Figure 2 As shown, the display panel 10 includes an array substrate 12 and a color filter substrate 13 that are relatively arranged, and a liquid crystal 14 located between the array substrate 12 and the color filter substrate 13. The display device 100 also includes a backlight module 40. The backlight module 40 provides a light source for the display panel 10. The array substrate 12 drives the liquid crystal 14 to deflect by controlling the voltage corresponding to each pixel, so that the light emitted by the backlight module 40 is emitted to the color filter substrate 13, and the light is mixed in the color filter substrate 13 to achieve color display.

[0040] The display device 100 also includes a cover plate 11. The cover plate 11 can appropriately resist external impact, dust, liquid penetration, etc., and helps provide a certain degree of mechanical protection for the interior of the display panel 10. Optionally, the cover plate 11 can be made of materials such as glass and transparent polymers. This disclosure is merely an example and is not limited to this. The first surface 111 of the cover plate 11 is the side surface facing away from the display panel 10, and the second surface 112 is the side surface facing the display panel 10.

[0041] The display device 100 also includes a detection structure 20, which is fixed to the second surface 112 of the cover plate 11, that is, the side of the cover plate 11 facing the inside of the display panel 10, and the detection structure 20 is used to sense whether there is an obstacle on the light-emitting side of the display panel 10. Optionally, the detection structure 20 is located in the non-display area NA, which is beneficial to avoid occupying the display area AA, and is beneficial to increasing the area of ​​the display area AA, thereby helping to increase the screen-to-body ratio and improve user experience. It should be noted that the embodiments of the present disclosure and the accompanying drawings only illustrate the case where the detection structure 20 is located in the non-display area NA, but are not limited to this. The detection structure 20 may also be located in the display area AA. When the detection structure 20 is located in the display area AA, it may be made of a transparent material to reduce the adverse effects on the display effect of the display area AA.

[0042] The present disclosure further includes a measuring unit 30, which is used to measure the capacitance of the detection structure 20 and determine whether an obstacle is approaching the display panel 10 based on the capacitance. Specifically, the detection structure 20 can sense the suspension of an object. When an obstacle approaches the display panel 10, the capacitance of the capacitance structure formed between the obstacle and the detection structure 20 increases, and the capacitance of the detection structure 20 changes. When the measuring unit 30 detects the change in the capacitance of the detection structure, it is determined that an obstacle is approaching the display panel 10, which helps to stop the flipping of the display panel 10 in a timely manner. Optionally, the detection structure 20 can be provided with a detection point, and the measuring unit 30 can simply measure the capacitance of the detection point.

[0043] The display device 100 provided by the present disclosure, when an obstacle approaches the display panel 10 but does not touch the display panel 10, the capacitance of the detection structure 20 will change, and the measuring unit 30 can obtain the above-mentioned capacitance change of the detection structure 20, and the obstacle can be detected when it does not touch the display panel 10. It should be noted that the obstacles described in the present disclosure refer to sharp objects, fingers and other objects that hinder the flipping of the display panel 10. When the obstacle is a sharp object, since the mechanical strength of the light-emitting surface side of the display panel 10 is relatively weak, the obstruction of the sharp object may cause damage to the display panel 10; when the obstacle is a finger, the flipping of the display panel 10 may cause a risk of pinching the finger. By setting the detection structure 20 and the measuring unit 30, the present disclosure can detect the obstacle when the obstacle does not touch the display panel 10, which is conducive to preventing the display panel 10 from being damaged by the obstacle and reducing the risk of pinching.

[0044] Figure 3 FIG. 1 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure, please refer to FIG. Figure 1 and Figure 3 , it should be noted that, Figure 3 Only the relevant structures of the cover plate 11, the detection structure 20, and the measurement unit 30 are shown, and other structures of the display device are not shown. Optionally, the measurement unit 30 includes a touch chip 31 and a flexible circuit board 32, and the detection structure 20 is electrically connected to the touch chip 31 via the flexible circuit board 32.

[0045] It should be noted that the touch chip 31 is mainly responsible for the acquisition, processing and transmission of touch signals, and its core functions include the detection of touch signals. Optionally, the touch chip 31 locates the touch point by monitoring the capacitance change of the touch electrode array. It should also be noted that the present disclosure provides a specific implementation of the measurement unit 30, but the present disclosure is not limited to this. The measurement unit 30 can be any other structure or device that can measure the capacitance change of the detection structure 20, and is not limited to the touch chip 31 and the flexible circuit board 32. The flexible circuit board 32 is widely used in various display products based on its bendability. In the display device 100, it assumes the functions of physical connection and signal transmission to reduce the space occupied in the display product and shorten the frame, which is conducive to realizing the narrow frame design of the display product.

[0046] In the present disclosure, the measurement unit 30 is connected to the detection structure 20 and is used to measure the capacitance of the detection structure 20. By detecting changes in the capacitance of the detection structure 20, it is determined whether there is an obstacle on the light-emitting surface of the display panel 10. Within the measurement unit 30, a touch chip 31 is connected to the detection structure 20 via a flexible circuit board 32. Because the touch chip 31 itself has the function of detecting changes in capacitance, the touch chip 31 can be reused to detect the capacitance of the detection structure 20, eliminating the need for adding new components. This helps reduce the space occupied within the display device 100 and facilitates the miniaturization of the display device 100.

[0047] Figure 4 FIG. 1 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure, please refer to FIG. Figure 1 、 Figure 3 and Figure 4 , optionally, as Figure 4 As shown, the touch chip 31 is electrically connected to the flexible circuit board 32; or, as shown Figure 1 and Figure 3 As shown, the touch chip 31 and the display panel 10 are both electrically connected to the flexible circuit board 32 .

[0048] It should be noted that in the display device 100, the touch chip 31 needs to be equipped with a flexible circuit board to transmit touch-related signals, and the display panel 10 also needs to be equipped with a flexible circuit board to transmit display-related signals. Figure 4The present disclosure provides an optional embodiment in which the flexible circuit board 32 is connected to the touch chip 31. Specifically, in this embodiment, the flexible circuit board 32 is a separate flexible circuit board 32 for the touch chip 31 and transmits touch-related signals. The display panel 10 is also equipped with a separate display flexible circuit board 15, which is connected to the array substrate 12 and the driver chip 16 and transmits display-related signals. This arrangement allows touch signals and display signals to be transmitted separately, which helps reduce crosstalk between signals and improves signal transmission stability. Another optional embodiment provided by the present disclosure is that the flexible circuit board 32 is connected to both the touch chip 31 and the display panel 10. Specifically, in this embodiment, the touch chip 31 and the display panel 10 share the same flexible circuit board 32, which transmits both touch-related and display-related signals. This arrangement reduces the number of flexible circuit boards 32 within the display device 100, reduces the space occupied within the display device 100, and further facilitates miniaturization, thinning, and narrowing the bezel of the display device 100.

[0049] It should also be noted that, for the display panel 10, the display panel 10 itself can also be a display panel with an integrated touch function. In this case, the display panel 10 receives both display signals and touch signals within the surface of the display panel 10. For the touch chip 31, the touch signals within the surface of the display panel 10 and the detection of the capacitance of the detection structure 20 can be transmitted in a time-sharing manner, thereby realizing the detection of obstacles without adding new devices.

[0050] Please refer to Figure 1 and Figure 2 In an optional embodiment of the present disclosure, the detection structure 20 includes a sensing electrode 201 , and the sensing electrode 201 is fixed to the second surface 112 of the cover plate 11 .

[0051] Specifically, the present disclosure disposes the sensing electrode 201 on the second surface 112 of the cover plate 11 facing the interior of the display panel 10. The measuring unit 30 monitors the capacitance of the sensing electrode 201 in real time. When an obstacle approaches the sensing electrode 201, the capacitance of the sensing electrode 201 changes, which can be detected by the measuring unit 30. This can then control the display panel 10 to stop flipping, thereby preventing the display panel 10 from being damaged by the obstacle and reducing the risk of pinching.

[0052] Please refer to Figure 1In an optional embodiment of the present disclosure, the sensing electrodes 201 surround the display area AA. With this arrangement, the display area AA is surrounded by the sensing electrodes 201. When an obstacle approaches the sensing electrodes 201 from any direction on the plane where the display panel 10 is located, the capacitance of the sensing electrodes 201 changes, which can be detected by the measurement unit 30. This can then control the display panel 10 to stop flipping, thereby improving detection accuracy, further preventing the display panel 10 from being damaged by obstacles, and reducing the risk of pinching injuries.

[0053] It should be noted that this disclosure Figure 1 In the embodiment described above, the sensing electrodes 201 are disposed around the display area AA, but the present disclosure is not limited thereto. Figure 5 FIG. 1 is another schematic plan view of a display device according to an embodiment of the present disclosure. Figure 5 The present disclosure provides another optional embodiment in which the sensing electrodes 201 do not completely surround the display area AA. Instead, sensing electrodes 201 are positioned around the periphery of the display area AA, where obstacles are more likely to enter or where there is a higher risk of pinching. The sensing electrodes 201 are connected to the measurement unit 30 via connecting wires 2003. This arrangement reduces the space occupied by the detection structure 20 while detecting obstacles, thereby increasing the area of ​​the display area AA and improving the display effect.

[0054] Please refer to Figure 1 Optionally, the sensing electrode 201 extends along the circumference of the display area AA, and the width of the sensing electrode 201 is W, 1 mm ≤ W ≤ 10 mm.

[0055] Specifically, when the width W of the sensing electrode 201 is less than 1 mm, the width of the sensing electrode 201 is too small. The capacitance of the sensing electrode 201 will only change significantly when the distance between the obstacle and the sensing electrode 201 is sufficiently close, and the sensing electrode 201's ability to sense obstacles is relatively weak. When the width W of the sensing electrode 201 is greater than 10 mm, the width of the sensing electrode 201 is too large, occupying a large space and hindering the miniaturization and narrow-frame design of the display device 100. Therefore, the present disclosure sets the width W of the sensing electrode 201 to 1 mm ≤ W ≤ 10 mm. This setting is conducive to improving the sensing electrode 201's ability to sense obstacles while minimizing the internal space occupied by the display device 100. The present disclosure provides an optional implementation manner in which the width W of the sensing electrode 201 is 2 mm. The present disclosure provides another optional implementation manner in which the width W of the sensing electrode 201 is 6 mm. The present disclosure provides another optional implementation manner in which the width W of the sensing electrode 201 is 9 mm. The present disclosure provides another optional implementation manner in which the width of the sensing electrode 201 is 3 mm ≤ W ≤ 5 mm. The present disclosure provides another optional implementation manner in which the width of the sensing electrode 201 is 4 mm ≤ W ≤ 8 mm.

[0056] Please refer to Figure 1 and Figure 2 In an optional embodiment of the present disclosure, the sensing electrode 201 is sputtered or electroplated onto the second surface 112 of the cover plate 11. Specifically, this embodiment provides a method for forming the sensing electrode 201 on the cover plate 11. Sputtering is a process in which high-energy particles bombard a target material, causing target atoms to deposit on the substrate surface to form a thin film. Sputtering the sensing electrode 201 onto the surface of the cover plate 11 facilitates precise control of the thickness of the sensing electrode 201 and provides strong adhesion to the cover plate 11, thereby improving the reliability of the sensing electrode 201. Electroplating is a process that deposits metal ions on the surface of a substrate through an electrochemical reduction reaction. Electroplating the sensing electrode 201 onto the surface of the cover plate 11 is highly efficient and inexpensive, which helps improve the production efficiency and reduce the production cost of the display device 100. It should be noted that this disclosure is merely illustrative and is not limited to this example. The purpose is to illustrate that the sensing electrode 201 can be directly formed on the surface of the cover plate 11 through a specific process.

[0057] Figure 6 FIG. 1 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure, please refer to FIG. Figure 1 and Figure 6 It should be noted that some of the drawings in this disclosure only illustrate the relevant structures of the cover plate 11, the detection structure 20, and the measurement unit 30, and do not show other structures of the display device. In an optional embodiment of the present disclosure, the detection structure 20 further includes a non-conductive adhesive layer 202, which is located between the cover plate 11 and the sensing electrode 201. The sensing electrode 201 is fixed to the second surface 112 of the cover plate 11 via the non-conductive adhesive layer 202; the flexible circuit board 32 includes a gold finger, and the sensing electrode 201 is electrically connected to the gold finger of the flexible circuit board 32 via conductive particles. In this embodiment, the sensing electrode 201 is fixed to the surface of the cover plate 11 via the non-conductive adhesive layer 202, and the sensing electrode 201 is electrically connected to the flexible circuit board 32. The flexible circuit board 32 is also electrically connected to the measurement unit 30. That is, the connection between the sensing electrode 201 and the measurement unit 30 is achieved through the flexible circuit board 32, thereby enabling the measurement unit 30 to detect the capacitance of the sensing electrode 201. It should be noted that the gold fingers of the flexible circuit board 32 are not shown in the drawings of this disclosure. The gold fingers can be understood as solder pads used to connect the flexible circuit board 32 and the sensing electrodes 201 .

[0058] Figure 7 FIG. 1 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure, please refer to FIG. Figure 1 and Figure 7In an optional embodiment of the present disclosure, the detection structure 20 includes a flexible substrate 203, a sensing electrode 201, and a cover protective layer 204. The sensing electrode 201 is arranged between the flexible substrate 203 and the cover protective layer 204. The side of the detection structure 20 with the cover protective layer 204 faces the cover plate 11. The detection structure 20 in this embodiment arranges the sensing electrode 201 on the flexible substrate 203 and then disposes the cover protective layer 204 on the sensing electrode 201 to protect the sensing electrode 201. The flexible substrate 203 and the cover protective layer 204 are both made of flexible materials. Optionally, the material of the flexible substrate 203 and the cover protective layer 204 includes polyimide (PI). In other words, the detection structure 20 in this embodiment is a structure in which the sensing electrode 201 is disposed between two layers of flexible materials. With this arrangement, on the one hand, the area and shape of the sensing electrode 201 can be designed according to actual needs, which is conducive to improving the adaptability of the sensing electrode 201 to different types of display devices 100. On the other hand, the flexible substrate 203 and the cover protective layer 204 are arranged on both sides of the sensing electrode 201 to support and protect the sensing electrode 201 and prevent the sensing electrode 201 from oxidation, thereby improving the detection effect.

[0059] Furthermore, Figure 8 The figure shows a connection diagram of the detection structure and the flexible circuit board provided by the embodiment of the present disclosure. Figure 1 、 Figure 7 and Figure 8 In an optional embodiment of the present disclosure, the detection structure 20 further includes a non-conductive adhesive layer 202, which is located between the cover plate 11 and the covering protective layer 204; the flexible circuit board 32 includes a first connecting pad 321, and the detection structure 20 includes a second connecting pad 2032, and the flexible circuit board 32 and the detection structure 20 are electrically connected through the first connecting pad 321 and the second connecting pad 2032.

[0060] Specifically, the sensing electrode 201 is disposed between the flexible substrate 203 and the cover protective layer 204. The detection structure 20 is adhered to the side of the cover plate 11 facing the interior of the display panel 10 via a non-conductive adhesive layer 202. To detect the capacitance of the sensing electrode 201, the measurement unit 30 needs to be electrically connected to the sensing electrode 201. In this embodiment, the detection structure 20 includes a second connection pad 2032, which is electrically connected to the sensing electrode 201. The flexible circuit board 32 includes a first connection pad 321, which is electrically connected to the second connection pad 2032. This establishes an electrical connection between the detection structure 20 and the flexible circuit board 32. Furthermore, the flexible circuit board 32 is connected to the measurement unit 30 via the flexible circuit board 32 to detect the capacitance of the sensing electrode 201.

[0061] Figure 9 FIG. 1 is another schematic plan view of a display device provided by an embodiment of the present disclosure. Figure 10 FIG. 1 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure. Figure 11 FIG. 1 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure, please refer to FIG. Figures 9 to 11 In an optional embodiment of the present disclosure, the display device 100 further includes a touch electrode 61, the orthographic projection of the touch electrode 61 on the plane where the display device 100 is located overlaps with the orthographic projection of the display area AA on the plane where the display device 100 is located, and the touch electrode 61 is electrically connected to the touch chip 31; the touch electrode 61 is integrated in the display panel 10, or is located on the side of the display panel 10 facing the light emitting surface of the display device 100, or is located on the side of the cover plate 11 away from the display panel 10.

[0062] It should be noted that Figure 9 The touch electrode 61 shown in the figure is a mutual capacitance detection method, which forms mutual capacitance through a grid-like electrode array. When a finger touches it, part of the electric field will be coupled, and the mutual capacitance value of the corresponding intersection will decrease, thereby realizing touch detection through capacitance change. In some other embodiments, the touch electrode 61 can also be set to a self-capacitance detection method. The touch electrode is an independent block or strip electrode. A capacitor is formed between the touch electrode and the ground. When a finger touches it, the capacitance value of the touch electrode will change, thereby realizing touch detection. This disclosure only uses the above embodiment as an example for illustration and is not limited thereto. In actual implementation, it can be selected according to actual needs.

[0063] Specifically, in order to realize the touch function of the display device 100, the display device 100 also includes a touch electrode 61, the touch electrode 61 overlaps with the display area AA, and the touch electrode 61 is electrically connected to the touch chip 31. Optionally, the material of the touch electrode 61 includes indium tin oxide. It should be noted that the present disclosure is only described by taking this as an example and is not limited to this. The touch electrode 61 can also be other transparent conductive materials. With such a setting, while realizing the touch function of the display device 100, the adverse effects on the display effect of the display area AA are reduced. With respect to the setting method of the touch electrode 61, the present disclosure provides an optional implementation method in which the touch electrode 61 is located inside the display panel 10, and the touch-related structure and the display-related structure are physically integrated. With such a setting, an independent touch layer can be saved, which is beneficial to reducing the thickness of the display device 100, thereby facilitating the thinness of the display device 100. In addition, there is no additional touch layer to block it, which is beneficial to improving the display brightness and thus improving the display effect. Please refer to Figure 9 and Figure 10The present disclosure provides another optional embodiment in which the touch electrode 61 is equipped with a separate touch layer to form a separate touch panel 60. The touch panel 60 includes the touch electrode 61. The touch panel 60 is located on the side of the cover plate 11 facing the display panel 10. Please refer to Figure 9 and Figure 11 The present disclosure provides another optional embodiment, in which the touch electrode 61 is equipped with a separate touch layer to form a separate touch panel 60, the touch panel 60 including the touch electrode 61, and the touch panel 60 is located on the side of the cover plate 11 away from the display panel 10; in the above two embodiments, the touch electrode 61 is equipped with a separate touch layer and is provided as an independent module in the display device 100. With such a configuration, the touch-related structure and the display-related structure are two independent modules, which is beneficial to improving the manufacturing yield of touch and display, and is also beneficial to reducing production costs; at the same time, the touch signal processing and the display signal processing are separated, which is beneficial to reducing signal coupling problems.

[0064] Figure 12 FIG. 1 is another schematic diagram of a film layer of a display device provided by an embodiment of the present disclosure, please refer to FIG. Figure 1 and Figure 12 In an optional embodiment of the present disclosure, the display device 100 further includes an ink layer 70 , the ink layer 70 is located on the first surface 111 of the cover plate 11 , and the ink layer 70 at least partially overlaps with the detection structure 20 .

[0065] Specifically, the detection structure 20 is located on the second surface 112 of the cover plate 11. The cover plate 11 is made of a transparent material. In this embodiment, an ink layer 70 is set on the first surface 111 of the cover plate 11 to shield the detection structure 20. On the one hand, it is beneficial to improve the aesthetics of the display device 100. On the other hand, when light is irradiated to the area where the detection structure 20 is located, the reflection of the light is reduced by the ink layer 70, which is beneficial to improving the display effect and user experience.

[0066] Please continue to refer to Figure 1 and Figure 12 In an optional embodiment of the present disclosure, the detection structure 20 includes a sensing electrode 201 , and the material of the sensing electrode 201 is metal.

[0067] It should be noted that the sensing electrodes 201 in the detection structure 20 overlap with the non-display area NA. For the sensing electrodes 201 located in the non-display area NA, the sensing electrodes 201 can be made of metal, which helps reduce manufacturing costs. Optionally, the sensing electrodes 201 can be made of copper. Due to copper's excellent performance, using copper as the material for the sensing electrodes 201 can reduce transmission losses within the sensing electrodes 201 and improve response speed, thereby improving obstacle detection sensitivity. Furthermore, copper's low cost helps reduce the production cost of the display device 100. Furthermore, copper has excellent bending and fatigue resistance, making it more suitable for high-frequency vibration and temperature changes in, for example, an in-vehicle environment. For the sensing electrodes 201 in the display area AA, the sensing electrodes 201 can be made of a transparent conductive material, which helps reduce the adverse effects of the sensing electrodes 201 on the display effect.

[0068] Please continue to refer to Figure 1 and Figure 12 In an optional embodiment of the present disclosure, the detection structure 20 is located on the light-emitting surface side of the display panel 10. With this arrangement, the present disclosure can detect obstacles on the display surface side of the display panel 10 through the detection structure 20. The mechanical strength of the display surface side of the display device 100 is relatively weak, which is beneficial to prevent obstacles from causing damage to the display device 100 and also helps reduce the risk of pinching.

[0069] Please continue to refer to Figure 1 and Figure 12 In an optional embodiment of the present disclosure, the display device 100 further includes: a main control module (not shown in the figure), the main control module is at least configured to control the switching state of the display device 100; the main control module is electrically connected to the measuring unit 30.

[0070] Specifically, the present disclosure sets up a detection structure 20, and measures the capacitance value of the detection structure 20 through the measuring unit 30 to determine whether there is an obstacle close to the display panel 10. When an obstacle is detected close to the display panel 10, the measuring unit 30 transmits a relevant signal to the main control module, and the main control module promptly controls the display panel 10 to stop flipping, which is beneficial to prevent the obstacle from causing damage to the display device 100, and at the same time, it is also beneficial to reduce the risk of pinching.

[0071] It should be noted that the display device 100 switches its state under the control of the main control module. The main control module can obtain the current state of the display device 100. The measuring unit 30 is also electrically connected to the main control module. The measuring unit 30 can provide feedback to the main control module whether an obstacle is detected, which is beneficial for the main control module to adjust the state of the display device 100 in a timely manner.

[0072] Figure 13FIG2 is a side view of a display device provided by an embodiment of the present disclosure, please refer to FIG2 Figure 1 、 Figure 2 and Figure 13 In an optional embodiment of the present disclosure, the display device 100 further includes: a receiving cavity 81, a flipping drive device 82 and a display component 83, the display component 83 includes a display panel 10, a cover plate 11, a detection structure 20 and a measuring unit 30, and the display panel 10 flips under the drive of the flipping drive device 82; the receiving cavity 81 includes a bottom surface 811, and the angle between the light-emitting surface of the display panel 10 and the bottom surface 811 is a first angle α; the display device 100 includes a receiving state and an exhibition state, the first angle α in the receiving state is less than the first preset angle, and the display panel 10 is located in the receiving cavity 81; the first angle α in the exhibition state is greater than the second preset angle, and the light-emitting surface of the display panel 10 is located outside the receiving cavity 81; the display device 100 includes a first conversion stage, in which the display device 100 is converted from the exhibition state to the receiving state.

[0073] It should be noted that Figure 13 Taking the example shown, the angle between the light-emitting surface of the display component 83 and the bottom surface 811 of the receiving cavity 81 is a first angle α. When the first angle α is smaller than the first preset angle, the display component 83 is in a received state. When the first angle α is larger than the first preset angle, the display component 83 is in an displayed state.

[0074] Specifically, the display device 100 includes a receiving cavity 81, a flipping drive device 82, and a display assembly 83. The display assembly 83 flips under the drive of the flipping drive device 82. When the display device 100 is in the receiving state, the display assembly 83 is located in the receiving cavity 81. When the display assembly 83 is in the display state, at least a portion of the display assembly 83 is located outside the receiving cavity 81. In other words, when the user uses the display function of the display device 100, the display assembly 83 can be switched to the display state, where the display assembly 83 is displayed from the receiving cavity 81. When the user stops using the display function of the display device 100, the display assembly 83 can be switched to the receiving state, where the display assembly 83 is stored in the receiving cavity 81. This arrangement, on the one hand, helps reduce the space occupied by the display device 100. On the other hand, it protects the display assembly 83 when it is not in use, which helps to increase the service life of the display assembly 83.

[0075] Based on the same inventive concept, the present disclosure provides a method for controlling a display device. Figure 14 The figure shows a flow chart of a control method of a display device provided by an embodiment of the present disclosure. Figure 1 and Figure 14 The control method of the display device provided in the present disclosure is used to control any one of the display devices 100 provided in the embodiments of the present disclosure, and the control method includes:

[0076] Step S10: determining that the display device 100 is in a flipped state;

[0077] Step S20 , the measuring unit 30 determines the capacitance value of the detection structure 20 ;

[0078] Step S30 : determining whether an obstacle is approaching the detection structure 20 according to the capacitance value.

[0079] It should be noted that the present disclosure provides a method for controlling a display device, including but not limited to steps S10 to S30.

[0080] Specifically, the control method of the display device provided by the present disclosure can be applied to detect whether there is an obstacle on the light-emitting surface of the display device 100 when the display device 100 is in a flipped state. In step S10, the state of the display device 100 is determined. When the display device 100 is in a flipped state, the subsequent control method is continued. For example, the flipped state includes: the display device 100 is converted from the display state to the storage state. Figure 13 As shown, in the displayed state, the display panel 10 is located outside the receiving cavity 81, and in the received state, the display panel 10 is located inside the receiving cavity 81, that is, the flipping state is the process of the display panel 10 retracting the receiving cavity 81. After determining that the display device 100 is in the flipping state, step S20 is executed to detect the capacitance value of the detection structure 20. In step S30, it is judged whether there is an obstacle approaching the detection structure 20. When an obstacle approaches the detection structure 20, the capacitance value of the detection structure 20 will increase. At this time, it is considered that an obstacle is approaching the detection structure 20. In this way, during the flipping process of the display device 100, it is judged by the capacitance value of the detection structure 20 whether there is an obstacle approaching the display device 100. When the obstacle does not contact the display device 100, it can be detected, which is conducive to preventing the display device 100 from being damaged by obstacles and reducing the risk of pinching.

[0081] Figure 15 FIG. 1 is another flow chart of a control method for a display device according to an embodiment of the present disclosure. Figure 1 and Figure 15 In an optional embodiment of the present disclosure, before the measuring unit 30 determines the capacitance value of the detection structure 20, the method further includes step S12, in which the measuring unit 30 provides a voltage pulse to the detection structure. Specifically, when detecting the capacitance value of the detection structure 20, the measuring unit 30 first sends a voltage pulse to the detection structure 20. The voltage pulse charges the capacitance formed between the detection structure 20 and the air. When an obstacle approaches the detection structure 20, the capacitance value of the detection structure 20 increases, thereby enabling detection of the obstacle.

[0082] Figure 16 Shown Figure 15 For a detailed flow chart of step S30, please refer to Figure 1 、 Figure 15 as well as Figure 16 In an optional embodiment of the present disclosure, step S30, determining whether an obstacle is approaching the detection structure 20 based on the capacitance value, is specifically as follows:

[0083] Step S31: The measuring unit 30 generates a first voltage value by processing the capacitance value through an operational amplifier, and determines whether a first difference between the first voltage value and a preset voltage value is greater than or equal to a preset threshold value.

[0084] Step S321 : When the first difference is greater than or equal to the preset threshold, the main control module stops flipping the display device 100 ; Step S322 : When the first difference is less than the preset threshold, the main control module continues flipping the display device 100 .

[0085] Specifically, in step S12, the measuring unit 30 provides a voltage pulse to the detection structure 20. The voltage pulse charges the capacitance formed between the detection structure 20 and the air. After the operational amplifier is processed, a voltage value without obstacles is obtained, which is used as the preset voltage value.

[0086] In step S31, when an obstacle approaches detection structure 20, the capacitance of detection structure 20 increases, and after operational amplifier processing, a first voltage value is obtained. The capacitance between detection structure 20 and air is very small, so the preset voltage value is relatively large. When an obstacle appears, the capacitance between the obstacle and detection structure 20 increases, and the first voltage value of the corresponding pulse charging the capacitor decreases. The first difference is the difference between the first voltage value and the preset voltage value. When the first difference is large, the difference between the first voltage value and the preset voltage value is large, and the capacitance formed between detection structure 20 and the obstacle causes the first voltage value to be less than the preset voltage value, that is, the obstacle is detected. Therefore, it is necessary to determine whether the first difference is greater than or equal to the preset threshold.

[0087] In step S321, if the first difference is greater than or equal to the preset threshold, that is, the difference between the first voltage value and the preset voltage value is large, then an obstacle is detected approaching the detection structure 20. When an obstacle is detected approaching the detection structure 20, the main control module controls the display device 100 to stop flipping. In step S322, if the first difference is less than the preset threshold, that is, the difference between the first voltage value and the preset voltage value is small, then no obstacle is detected approaching the detection structure 20. If no obstacle is detected, the display device 100 continues to flip.

[0088] Optionally, voltage pulses are periodically sent to the detection structure 20 , so that continuous detection can be achieved in the flipped state of the display panel 10 . When an obstacle is detected, flipping is stopped, and when it is detected that the obstacle is removed, flipping is continued.

[0089] Please refer to Figure 13 and Figure 15 In an optional embodiment of the present disclosure, the display device 100 includes a receiving cavity 81 and a display assembly 83. The receiving cavity 81 includes a bottom surface 811. The angle between the light-emitting surface of the display assembly 83 and the bottom surface 811 is a first angle α. The display device 100 includes a received state and an displayed state. In the received state, the first angle α is less than a first preset angle, and the display assembly 83 is located within the receiving cavity 81. In the displayed state, the first angle α is greater than a second preset angle, and the light-emitting surface of the display assembly 83 is located outside the receiving cavity 81.

[0090] When the display device 100 is switched from the displayed state to the stored state, the measuring unit 30 provides a voltage pulse to the detection structure.

[0091] Specifically, the display device 100 includes a receiving cavity 81 and a display assembly 83. When the display device 100 is in the receiving state, the display assembly 83 is located within the receiving cavity 81. When the display assembly 83 is in the display state, at least a portion of the display assembly 83 is located outside the receiving cavity 81. In other words, when the user uses the display function of the display device 100, the display assembly 83 can be switched to the display state, where the display assembly 83 is extended from the receiving cavity 81. When the user stops using the display function of the display device 100, the display assembly 83 can be switched to the receiving state, where the display assembly 83 is stored within the receiving cavity 81. This arrangement not only helps reduce the space occupied by the display device 100, but also protects the display assembly 83 when it is not in use, thereby improving the service life of the display assembly 83. The control method provided by the present disclosure includes: when the display device 100 starts to switch from the displayed state to the stored state, that is, when the display component 83 starts to be retracted into the storage cavity 81, it starts to detect whether there is an obstacle on the light-emitting surface side of the display component 83, so as to stop the flipping in time. This is conducive to preventing the display component 83 from being damaged by obstacles during the retraction process and reducing the risk of pinching.

[0092] It should be noted that the present disclosure detects obstacles on the light-emitting side of the display component 83 during the process of the display component 83 being switched from the displayed state to the stored state by providing a detection structure 20 in the display device 100. This means that obstacles are detected in front of the flipping path of the display component 83. In the process of the display component 83 being switched from the stored state to the displayed state, the front of the flipping path of the display component 83 refers to the backlight side of the display component 83. The backlight side of the display component 83 has high mechanical strength and does not present the risk of pinching. The presence of an obstacle can be detected by judging the driving current. When an object obstructs the flipping of the screen, the motor of the rotating shaft increases the driving current due to the increase in torque. The driving current is detected by the control unit. When the driving current is detected to be greater than the set threshold, it is considered that an object is obstructing the flipping of the screen, and the flipping action is stopped.

[0093] Therefore, when the display assembly 83 switches from the display state to the storage state, obstacles are detected by the control method provided by the present disclosure. When the display assembly 83 switches from the storage state to the display state, obstacles are detected by detecting the driving current. In this way, it is sufficient to set the detection structure 20 on the light-emitting surface of the display assembly 83. At the same time, an enable signal of a pulse signal can be provided when the display assembly 83 switches from the display state to the storage state. This arrangement helps reduce the power consumption generated by the detection. It should be noted that this disclosure is only used as an example for explanation and is not limited to this. In actual use, the design can be based on actual needs.

[0094] It can be seen from the above embodiments that the display device and control method thereof provided by the present disclosure achieve at least the following beneficial effects:

[0095] The present disclosure provides a display device and a control method thereof, wherein the display device includes: a display panel, a cover plate, a detection structure, and a measurement unit; the cover plate is located on a light-emitting surface side of the display panel; the cover plate includes a first surface and a second surface, the second surface being closer to the display panel; the detection structure is fixed to the second surface of the cover plate; the display panel includes a display area and a non-display area surrounding the display area, the detection structure and the non-display area at least partially overlapping; the measurement unit is electrically connected to the detection structure, and the measurement unit is configured to measure at least the capacitance value of the detection structure. The present disclosure detects obstacles by providing a detection structure and a measurement unit. When an obstacle approaches the display panel but does not contact the display panel, the capacitance of the detection structure changes. The measurement unit can obtain the capacitance change of the detection structure and detect the obstacle when the obstacle does not contact the display panel. When the obstacle is a sharp object, the mechanical strength of the light-emitting surface side of the display panel is relatively weak, and the obstruction of the sharp object may cause damage to the display panel; when the obstacle is a finger, the flipping of the display panel may create a risk of pinching the finger. The present disclosure can detect obstacles when the obstacles do not contact the display panel, thereby preventing the display panel from being damaged by the obstacles and reducing the risk of pinching.

[0096] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0097] The foregoing description is intended only to provide specific embodiments of the present disclosure, intended to enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments described herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A display device, characterized in that: include: A display panel, the display panel comprising a display area and a non-display area surrounding the display area; a cover plate, the cover plate being located on a side of the light emitting surface of the display panel, the cover plate comprising a first surface and a second surface, the second surface being close to the display panel; a detection structure, the detection structure being fixed to the second surface of the cover plate, the detection structure at least partially overlapping with the non-display area; A measuring unit is electrically connected to the detection structure, and the measuring unit is at least configured to measure a capacitance value of the detection structure.

2. The display device according to claim 1, wherein The measuring unit includes a touch chip and a flexible circuit board, and the detection structure is electrically connected to the touch chip through the flexible circuit board; The touch chip is electrically connected to the flexible circuit board; or, both the touch chip and the display panel are electrically connected to the flexible circuit board.

3. The display device according to claim 2, wherein: The detection structure includes a sensing electrode, and the sensing electrode is fixed on the second surface of the cover.

4. The display device according to claim 3, wherein: The sensing electrodes surround the display area.

5. The display device according to claim 3, wherein The sensing electrodes extend along the circumference of the display area, and the width of the sensing electrodes is W, where 1 mm ≤ W ≤ 10 mm.

6. The display device according to claim 3, wherein: The sensing electrode is sputtered or electroplated on the second surface of the cover plate.

7. The display device according to claim 3, wherein: The detection structure further includes a non-conductive adhesive layer, the non-conductive adhesive layer is located between the cover plate and the sensing electrode, and the sensing electrode is fixed to the second surface of the cover plate through the non-conductive adhesive layer; The flexible circuit board includes a gold finger, and the sensing electrode is electrically connected to the gold finger of the flexible circuit board through conductive particles.

8. The display device according to claim 2, wherein: The detection structure includes a flexible substrate, a sensing electrode and a covering protective layer. The sensing electrode is arranged between the flexible substrate and the covering protective layer. The detection structure has a side with the covering protective layer facing the cover plate.

9. The display device according to claim 8, wherein The detection structure further includes a non-conductive adhesive layer, wherein the non-conductive adhesive layer is located between the cover plate and the covering protective layer; The flexible circuit board includes a first connecting pad, the detection structure includes a second connecting pad, and the flexible circuit board and the detection structure are electrically connected via the first connecting pad and the second connecting pad.

10. The display device according to claim 2, wherein The touch control device further comprises a touch electrode, wherein the orthographic projection of the touch electrode on the plane where the display device is located overlaps with the orthographic projection of the display area on the plane where the display device is located, and the touch electrode is electrically connected to the touch chip; The touch electrode is integrated into the display panel, or is located on a side of the display panel facing a light emitting surface of the display device, or is located on a side of the cover plate away from the display panel.

11. The display device according to claim 1, wherein The invention also includes an ink layer, wherein the ink layer is located on the first surface of the cover plate, and the ink layer at least partially overlaps with the detection structure.

12. The display device according to claim 1, wherein The detection structure includes a sensing electrode, and the sensing electrode is made of metal.

13. The display device according to claim 12, wherein: The sensing electrode is made of copper.

14. The display device according to claim 1, wherein Also includes: a main control module, the main control module being configured at least to control the switching state of the display device; The main control module is electrically connected to the measuring unit.

15. The display device according to claim 1, wherein Also includes: An accommodating cavity, a flip driving device and a display assembly, wherein the display assembly includes the display panel, the cover plate, the detection structure and the measuring unit, and the display assembly flips under the drive of the flip driving device; The receiving cavity includes a bottom surface, and an angle between a light-emitting surface of the display assembly and the bottom surface is a first angle; the display device includes a receiving state and an extended state, and in the receiving state, the first angle is smaller than a first preset angle, and the display assembly is located within the receiving cavity; in the extended state, the first angle is larger than a second preset angle, and the light-emitting surface of the display assembly is located outside the receiving cavity; The display device includes a first conversion stage, in which the display device is converted from an exhibition state to a storage state.

16. A method for controlling a display device, characterized in that: Used to control the display device according to any one of claims 1 to 15, the control method comprising: determining that the display device is in a flipped state; The measuring unit determines the capacitance value of the detection structure; It is determined whether an obstacle is approaching the detection structure according to the capacitance value.

17. The control method of the display device according to claim 16, characterized in that: Before the measuring unit determines the capacitance value of the detection structure, the measuring unit also provides a voltage pulse to the detection structure.

18. The control method of the display device according to claim 17, characterized in that: The determining whether an obstacle is approaching the detection structure according to the capacitance value is specifically as follows: The measuring unit generates a first voltage value by processing the capacitance value through an operational amplifier, and determines whether a first difference between the first voltage value and a preset voltage value is greater than or equal to a preset threshold value; When the first difference is greater than or equal to the preset threshold, the main control module stops flipping the display device; when the first difference is less than the preset threshold, the main control module continues flipping the display device.

19. The control method of the display device according to claim 18, characterized in that: The display device includes a receiving cavity and a display assembly, the receiving cavity includes a bottom surface, and the angle between the light-emitting surface of the display assembly and the bottom surface is a first angle; the display device includes a receiving state and an extended state, the first angle in the receiving state is less than a first preset angle, and the display assembly is located within the receiving cavity; the first angle in the extended state is greater than a second preset angle, and the light-emitting surface of the display assembly is located outside the receiving cavity; When the display device starts to switch from the displayed state to the stored state, the measuring unit provides a voltage pulse to the detection structure.

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