Display device

Abstract

The utility model relates to a display device, the display device comprises a cover plate, an elastic wave sensor, a frame and a sensor connecting line, and the elastic wave sensor is attached to the back surface of the cover plate; the frame surrounds the edge of the cover plate and avoids the elastic wave sensor, a receding groove is formed in the side face, facing the elastic wave sensor, of the frame, and the receding groove communicates with the back face of the frame; one end of the sensor connecting line is connected to the elastic wave sensor, and the other end of the sensor connecting line penetrates out of the avoiding groove and is connected to the main board. According to the display device, the avoiding groove is formed in the frame, the inductor connecting wire is directly led out from the avoiding groove and then connected to the main board of the display device, the inductor connecting wire does not need to be arranged in the frame, and the problem that the inductor connecting wire is inconvenient to arrange in the frame is solved. In addition, the elastic wave sensor is not connected with the touch frame circuit board, the elastic wave sensor is not affected by faults of the touch frame circuit board, and therefore the failure risk of the elastic wave sensor is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of display devices, and in particular to a display apparatus. Background Art

[0002] With the advancement of science and technology, the dissemination of information is becoming more and more convenient. Among them, various display devices have emerged. For example, smart interactive tablets use touch screens as display and operation platforms, and have multiple functions such as writing, annotation, drawing, and online conferencing. They integrate multiple technologies such as human-computer interaction, flat panel displays, and network transmission, allowing users to obtain a convenient human-computer interactive experience. For interactive tablets with liquid crystal displays, they include liquid crystal panels and backlight modules. The liquid crystal surface itself does not emit light, and images are displayed with the help of the light source of the backlight module. Some touch screen displays can be provided with multiple elastic wave sensors for detecting signals of vibration when the screen is touched, that is, detecting elastic wave signals.

[0003] In the prior art, the elastic wave sensor is connected to the touch frame circuit board inside the frame. If the touch frame circuit board fails, the elastic wave sensor function will also be disabled. Moreover, the connection line between the elastic wave sensor and the touch frame circuit board is mainly inside the frame, which is very inconvenient to route. Utility Model Content

[0004] Based on this, a display device is provided, in which the sensor connection line of the elastic wave sensor is led out from the avoidance groove on the frame and connected to the mainboard. The sensor connection line does not need to be wired inside the frame; the elastic wave sensor is not connected to the touch frame circuit board, thereby avoiding being affected by failure of the touch frame circuit board.

[0005] A display device, comprising:

[0006] cover;

[0007] an elastic wave sensor attached to the back of the cover plate;

[0008] a frame, arranged around the edge of the cover plate and avoiding the elastic wave sensor, wherein a side of the frame facing the elastic wave sensor is provided with an avoidance groove, and the avoidance groove is connected to the back side of the frame;

[0009] A sensor connecting line, one end of which is connected to the elastic wave sensor, and the other end of which passes through the avoidance groove and is connected to the mainboard.

[0010] In one embodiment, the display device further includes:

[0011] The adapter board is used to receive and amplify the sensing signal of the elastic wave sensor, and transmit the amplified sensing signal to the main board.

[0012] In one embodiment, the display device further includes:

[0013] The back plate, the main plate and the adapter plate are arranged on a side of the back plate away from the cover plate, and the main plate and the adapter plate are communicatively connected.

[0014] In one embodiment,

[0015] The back panel is arranged on the back side of the frame, and at least one elastic wave sensor is arranged on the top side of the cover plate. A wire inlet is arranged on the top side of the back panel, and a wire outlet is also arranged on the back panel below the wire inlet. The sensor connection line on the top side is led out from the corresponding avoidance groove and then led to the front side of the back panel through the wire inlet, and then routed along the front side of the back panel, passes through the wire outlet, and then routes along the back side of the back panel and is connected to the adapter board.

[0016] In one embodiment, the display device further includes a speaker, which is led from the line inlet to the front of the back panel through a speaker connecting line, routed along the front of the back panel, passes through the line outlet, and then routed along the back of the back panel and connected to the main board.

[0017] In one embodiment, the display device further includes:

[0018] A protective cover is provided on the back side of the back plate, and the protective cover covers the wire outlet.

[0019] In one embodiment, at least one elastic wave sensor is provided on the bottom side of the cover plate, and the sensor connection line on the bottom side is led out from the corresponding avoidance groove, runs along the back side of the back plate and is connected to the adapter plate.

[0020] In one embodiment, the sensor connecting wire is configured as a wire harness, and a plug-in interface is provided at one end of the sensor connecting wire facing away from the elastic wave sensor.

[0021] In one embodiment, the elastic wave sensor is connected to the sensor connecting wire by welding.

[0022] In one embodiment, the elastic wave sensor includes a copper sheet, and the sensor connecting wire is configured as a wire harness, which is connected to the copper sheet by soldering.

[0023] In this display device, the elastic wave sensor is attached to the back of the cover plate, away from the frame. A relief groove is provided in the frame, allowing the elastic wave sensor's sensor cable to be routed directly from the relief groove to the display device's mainboard. This eliminates the need to route the sensor cable within the frame, thus resolving the inconvenience of routing the sensor cable within the frame. Furthermore, since the elastic wave sensor is directly connected to the display device's mainboard via the sensor cable, rather than to the touch frame circuit board, it is unaffected by any failure of the touch frame circuit board, thereby reducing the risk of elastic wave sensor failure. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic structural diagram of a frame and a cover provided in one embodiment of the present application.

[0027] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0028] Figure 3 for Figure 1 Enlarged structural diagram at point B in the middle.

[0029] Figure 4 This is a schematic diagram of the back structure of the backplane provided in one embodiment of the present application.

[0030] Figure 5 for Figure 4 Enlarged structural diagram at point D in the middle.

[0031] Figure 6 This is a schematic diagram of the front structure of the backplane provided in one embodiment of the present application.

[0032] Figure 7 for Figure 6 Enlarged structural diagram at point C in the middle.

[0033] Reference numerals:

[0034] 1. Cover; 2. Frame; 21. Avoidance groove; 3. Elastic wave sensor; 4. Sensor connecting line; 5. Main board; 6. Adapter board; 7. Back panel; 71. Wire outlet. DETAILED DESCRIPTION

[0035] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0037] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of this application, if the term "plurality" appears, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0038] In this application, unless otherwise specified or limited, the terms "mounted," "connected," "connected," "fixed," etc., should be interpreted broadly. For example, these terms may refer to fixed connections, removable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediary; and internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified or limited, if a first feature is described as being "above" or "below" a second feature, or similar descriptions, this may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is described as being "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is described as being "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only embodiment.

[0041] Some touch-enabled display devices incorporate multiple elastic wave sensors on the glass cover. These sensors detect vibration signals generated when the screen is touched, i.e., detect elastic wave signals. Traditional display devices incorporate a touch frame circuit board within their frame. The elastic wave sensors are connected to the touch frame circuit board, which in turn connects to the motherboard via the touch frame circuit board.

[0042] On the one hand, since the port of the connection line for connecting the elastic wave sensor is connected to the touch frame circuit board, if the touch frame circuit board fails, the detection function of the elastic wave sensor will also fail.

[0043] On the other hand, in order to achieve the connection between the elastic wave sensor and the touch frame circuit board, multiple interfaces are set up on the touch frame circuit board, and sensor connection lines (such as FPC lines) are connected at the interfaces. The sensor connection lines are connected to the connection lines led out from the elastic wave sensor, thereby achieving the connection between the elastic wave sensor and the touch frame circuit board. When the touch frame circuit board is installed into the cavity in the frame, the sensor connection lines are first connected to the touch frame circuit board, and the touch frame circuit board and the sensor connection lines are inserted into the cavity of the frame together. Due to the limited cavity space for the touch frame circuit board in the frame, it is difficult to insert the touch frame circuit board with the sensor connection lines connected into the frame. During the installation process, at the corner position of the frame, the touch frame circuit board needs to connect two connection lines: the sensor connection line and the touch frame connection line. The two connection lines are retracted at the corner, which easily lifts the sensor connection line terminal (commonly known as the piano cover) at the touch frame circuit board interface, resulting in an increase in the defective rate of production abnormalities. Additional auxiliary foam is needed to attach the sensor connection line and the touch frame connection line, resulting in low assembly efficiency.

[0044] After the touch frame circuit board is assembled within the frame, the sensor cable must be routed outside the frame to connect to the elastic wave sensor. To achieve this, an opening is provided in the frame through which the free end of the sensor cable is hooked out and then plugged into the cable leading out of the elastic wave sensor. Unhooking the sensor cable through the opening in the frame is also difficult and can easily damage the sensor cable, especially the connector at the end. This often requires additional protective measures, making the process even more cumbersome.

[0045] Based on the above considerations, the present application provides a display device. Figure 1-Figure 3 , Figure 1 A schematic structural diagram of a frame 2 and a cover plate 1 provided in an embodiment of the present application is shown; Figure 2 Shown Figure 1 A magnified structural diagram at center A; Figure 3 Shown Figure 1 An enlarged structural diagram of point B in the middle. Specifically, the display device includes a cover plate 1, a frame 2, an elastic wave sensor 3, and a sensor connection cable 4. The elastic wave sensor 3 is attached to the back of the cover plate 1. The frame 2 is arranged around the edge of the cover plate 1 and avoids the elastic wave sensor 3. The side of the frame 2 facing the elastic wave sensor 3 is provided with an escape groove 21, and the escape groove 21 is connected to the back of the frame 2. One end of the sensor connection cable 4 is connected to the elastic wave sensor 3, and the other end of the sensor connection cable 4 passes through the escape groove 21 and is connected to the mainboard 5.

[0046] The display device proposed in the embodiment of the present application attaches the elastic wave sensor 3 to the back of the cover plate 1 (in the same direction as the back of the display device) away from the frame 2. By providing an avoidance groove 21 on the frame 2, the sensor connection line 4 of the elastic wave sensor 3 is directly led out from the avoidance groove 21 and connected to the mainboard 5 of the display device. The sensor connection line 4 does not need to be wired within the frame 2, thus solving the problem of inconvenient wiring of the sensor connection line 4 within the frame 2. In addition, the elastic wave sensor 3 is directly connected to the mainboard 5 of the display device via the sensor connection line 4 and is not connected to the touch frame circuit board. The elastic wave sensor 3 will not be affected by a failure of the touch frame circuit board, thereby reducing the failure risk of the elastic wave sensor 3.

[0047] Specifically, cover plate 1 is a transparent cover plate 1 . Cover plate 1 may be made of transparent glass or sapphire glass, as long as it protects the internal components such as the liquid crystal panel. The front of cover plate 1 faces outward, and the back of cover plate 1 is attached to the liquid crystal panel (not shown). Generally, the size of the liquid crystal panel is smaller than that of cover plate 1 , so the edge of cover plate 1 extends outside the liquid crystal panel.

[0048] In one embodiment, see Figure 1 The frame 2 is a rectangular frame, including a top frame, a bottom frame, a left frame and a right frame, wherein the top frame and the bottom frame are relatively spaced apart, the left frame and the right frame are relatively spaced apart, and the top frame, the left frame, the bottom frame and the right frame are sequentially connected to form a rectangular frame 2.

[0049] In one embodiment, please continue to refer to Figure 1 Two elastic wave sensors 3 are provided on the edge of the cover plate 1 next to the top frame, and three elastic wave sensors 3 are provided on the edge of the cover plate 1 next to the bottom frame. Of course, the number and location of elastic wave sensors 3 are not limited to this. Depending on the functional requirements of the display device, other numbers of elastic wave sensors 3 may be provided, and the elastic wave sensors 3 may also be provided on the edge of the cover plate 1 next to the left frame or the edge of the cover plate 1 next to the right frame.

[0050] In one embodiment, see Figure 4 and Figure 5 , Figure 4 A schematic diagram of the back structure of a back plate provided in one embodiment of the present application is shown; Figure 5 Shown Figure 4 The display device further includes an adapter plate 6 , which is used to receive and amplify the sensing signal from the elastic wave sensor 3 and transmit the amplified sensing signal to the main board 5 .

[0051] The display device further includes a backplate 7, which is disposed on a side of the liquid crystal panel facing away from the cover plate 1. A backlight module is disposed on the backplate 7 to provide backlight for the liquid crystal panel 400. Optionally, a mainboard 5 and an adapter board 6 are disposed on a side of the backplate 7 facing away from the cover plate 1, and the mainboard 5 and the adapter board 6 are connected via a communication link.

[0052] During the display device assembly process, the backplate 7 and backlight module are assembled into a single unit and then installed within the frame 2. The backplate 7 is positioned on the backside of the frame 2 (aligned with the backside of the display device) and can be flush with the backside of the frame 2. Before the backplate 7 is assembled with the frame 2, the sensor cable 4 is routed through the avoidance groove 21 in the frame 2 to connect to the sensor cable 4 pre-embedded in the backplate 7.

[0053] In one embodiment, please combine Figure 6 and Figure 7 As shown, Figure 6 A schematic diagram of the front structure of a backplane provided in an embodiment of the present application is shown; Figure 7 Shown Figure 6 Enlarged structural diagram at point C in the middle. At least one elastic wave sensor 3 is provided on the top side of the cover plate 1. The sensor connection line 4 connecting the elastic wave sensor 3 on the top side of the cover plate 1 is routed for a distance along the front side of the back plate 7 (in the same direction as the front side of the display device) to prevent the sensor connection line 4 from being exposed from the back side of the back plate 7. Specifically, a wire inlet is provided on the top side of the back plate 7, and a wire outlet 71 is also provided on the back plate 7 below the wire inlet. The top side sensor connection line 4 is led out from the corresponding avoidance groove 21, then through the wire inlet to the front side of the back plate 7, and then through the wire outlet 71. It is then routed along the front side of the back plate 7, passes through the wire outlet 71, and then along the back side of the back plate 7 and connects to the adapter board 6. By routing a section of the top side sensor connection line 4 along the front side of the back plate 7, the corresponding position on the back side of the back plate 7 can be kept clear of the sensor connection line 4. This is particularly suitable for display devices where the upper back side of the back plate 7 is directly exposed.

[0054] When two or more elastic wave sensors 3 are provided on the top side, the two or more sensor connecting wires 4 can pass through the same wire outlet 71 .

[0055] Typically, the display device also includes a speaker, which is connected to the mainboard 5 via a speaker cable. The speaker cable is routed from the cable inlet to the front of the back panel 7, along the front of the back panel 7, through the cable outlet 71, and then along the back of the back panel 7 to connect to the mainboard 5. In other words, the speaker cable and the sensor cable 4 share the same cable inlet and outlet 71, eliminating the need for cable inlets and outlets 71 on the back panel 7, saving processing steps and improving the structural strength of the back panel 7.

[0056] Optionally, combined Figure 4 and Figure 5As shown, the display device also includes a protective cover (not shown) for protecting components such as the circuit board on the back of the back panel. The protective cover is located on the back of the back panel 7 and covers the cable outlet 71. Typically, protective covers are installed on the outside of the main board 5 and adapter board 6 to provide protection. By locating the cable outlet 71 at the location covered by the protective cover, the sensor cable 4 is led through the cable outlet 71 to the back of the back panel 7 and then covered by the protective cover, preventing the sensor cable 4 from being exposed.

[0057] In one embodiment, if Figure 5 As shown, at least one elastic wave sensor 3 is provided on the bottom side of the cover plate 1. The sensor connection cable 4 on the bottom side is led out from the corresponding avoidance groove 21, then routed along the back of the back plate 7 and connected to the adapter plate 6. A protective cover is typically provided at the bottom of the back plate 7, covering the bottom side frame 2. Therefore, the sensor connection cable 4 on the bottom side, after being led out from the corresponding avoidance groove 21, can be routed directly along the back of the back plate 7 and can be covered by the protective cover without being exposed. This arrangement can reduce the need for a cable outlet 71 on the back plate 7 and shorten the wiring length of the sensor connection cable 4.

[0058] When two or more elastic wave sensors 3 are provided on the bottom side of the cover plate 1 , the sensor connection line 4 connected to each elastic wave sensor 3 can be independently routed and then connected to the adapter plate 6 .

[0059] Traditional sensor connection lines 4 generally use FPC lines or FFC lines, which are connected to the elastic wave sensor 3 through a hot pressing process. The hot pressing process has a high risk of bubbles, which can easily cause the elastic wave sensor 3 to fail, thereby resulting in a relatively high risk of failure of the entire device.

[0060] To solve this problem, in the embodiment of the present application, the sensor connecting wire 4 is configured as a wire harness, and a plug-in interface is provided at the end of the sensor connecting wire 4 facing away from the elastic wave sensor 3. By using a wire harness, the convenience of wiring is improved.

[0061] Specifically, the elastic wave sensor 3 is connected to the sensor connecting wire 4 by welding, and welding is used instead of the traditional hot pressing process to avoid the failure risk caused by the hot pressing process.

[0062] In one embodiment, the elastic wave sensor 3 includes a copper sheet, and the wire harness is connected to the copper sheet by soldering, specifically using a soldering spot welding process. The soldering connection process improves the yield and stability of the connection between the elastic wave sensor 3 and the sensor connecting wire 4.

[0063] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0064] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A display device, characterized in that: The display device includes: Cover plate (1); An elastic wave sensor (3) is attached to the back of the cover plate (1); A frame (2) is arranged around the edge of the cover plate (1) and avoids the elastic wave sensor (3); a side of the frame (2) facing the elastic wave sensor (3) is provided with an avoidance groove (21), and the avoidance groove (21) is connected to the back side of the frame (2); A sensor connecting line (4), one end of the sensor connecting line (4) is connected to the elastic wave sensor (3), and the other end of the sensor connecting line (4) passes through the avoidance groove (21) and is connected to the mainboard (5).

2. The display device according to claim 1, wherein The display device further includes: The adapter board (6) is used to receive and amplify the sensing signal of the elastic wave sensor (3), and transmit the amplified sensing signal to the main board (5).

3. The display device according to claim 2, wherein: The display device further includes: The back plate (7), the main plate (5) and the adapter plate (6) are arranged on a side of the back plate (7) facing away from the cover plate (1), and the main plate (5) and the adapter plate (6) are communicatively connected.

4. The display device according to claim 3, wherein: The back panel (7) is arranged on the back side of the frame (2), at least one elastic wave sensor (3) is arranged on the top side of the cover plate (1), a line inlet is arranged on the top side of the back panel (7), and a line outlet (71) is further arranged on the back panel (7) below the line inlet. The sensor connection line (4) on the top side is led out from the corresponding avoidance groove (21) and then led to the front side of the back panel (7) through the line inlet, and then is routed along the front side of the back panel (7), passes through the line outlet (71), and then is routed along the back side of the back panel (7) and connected to the adapter plate (6).

5. The display device according to claim 4, wherein: The display device further comprises a speaker, which is led from the line inlet to the front of the back panel (7) via a speaker connection line, is routed along the front of the back panel (7), passes through the line outlet (71), and is then routed along the back of the back panel (7) and connected to the main board (5).

6. The display device according to claim 4, wherein: The display device further includes: A protective cover is provided on the back side of the back plate (7), and the protective cover covers the wire outlet (71).

7. The display device according to any one of claims 3 to 6, characterized in that: At least one elastic wave sensor (3) is provided on the bottom side of the cover plate (1), and the sensor connection line (4) on the bottom side is led out from the corresponding avoidance groove (21), runs along the back side of the back plate (7) and is connected to the adapter plate (6).

8. The display device according to any one of claims 1 to 6, characterized in that: The sensor connecting line (4) is configured as a wiring harness, and a plug-in interface is provided at one end of the sensor connecting line (4) facing away from the elastic wave sensor (3).

9. The display device according to any one of claims 1 to 6, characterized in that: The elastic wave sensor (3) is connected to the sensor connecting wire (4) by welding.

10. The display device according to claim 9, wherein The elastic wave sensor (3) comprises a copper sheet, and the sensor connecting wire (4) is provided as a wire harness, and the wire harness is connected to the copper sheet by soldering.

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