Touch display device and electronic equipment

Abstract

The utility model relates to a touch display device and electronic equipment, the touch display device uses a capacitive sensing disc to realize touch input, the touch sensing disc is close to a display membrane, the thickness of a product is reduced, meanwhile, elastic components such as sponge and a spring are not needed for supporting, the display membrane is prevented from being in poor contact or jacked up, and the reliability is improved.

Description

Technical Field

[0001] This application belongs to the field of power electronics technology, and in particular relates to a touch display device and an electronic device. Background Technology

[0002] Currently, the touch control of integrated digital displays on the market generally uses conductive sponge and springs. Using conductive sponge as a capacitive sensor can easily lead to poor contact or lifting of the display film; using springs as a capacitive sensor results in a thicker product, generally exceeding 1cm in thickness. If the elasticity is too low, poor contact with the display film is likely to occur, while high elasticity can easily lift the display film. Utility Model Content

[0003] The purpose of this application is to provide a touch display device and electronic device, which aims to solve the problems of thick touch display products and low reliability in related technologies.

[0004] In a first aspect, embodiments of this application provide a touch display device, including a display film, a bracket, and a circuit board stacked together. The circuit board is provided with a touch sensing disk, a light-emitting component, and a touch driving circuit. The touch driving circuit is connected to the touch sensing disk and the light-emitting component. The bracket has a hollowed-out pattern and a hollowed-out area. The light-emitting component is directly opposite the hollowed-out pattern. The touch sensing disk is located in the hollowed-out area and close to the back of the display film.

[0005] In some embodiments, the circuit board includes a first PCB board, the first PCB board including a first surface and a second surface opposite to the first surface, the first surface of the first PCB board being opposite to the display film, and the light-emitting component and the touch sensing pad being located on the first surface of the first PCB board.

[0006] In some embodiments, the touch sensing pad includes a conductive metal sheet fixed to a first surface of the first PCB board.

[0007] In some embodiments, the touch driving circuit is disposed on the second surface of the first PCB board.

[0008] In some embodiments, the circuit board further includes a second PCB board, which is fixedly connected to the first PCB board, and the second PCB board has copper plating forming the touch sensor pad.

[0009] In some embodiments, the second PCB board includes an upper surface and a lower surface opposite to the upper surface, the lower surface of the second PCB board is fixed to a first surface of the first PCB board, and the upper surface of the second PCB board is provided with copper plating to form the touch sensing pad.

[0010] In some embodiments, the front side of the display film is provided with a display pattern, and the area on the back side of the display film opposite to the cutout pattern is coated with a fluorescent layer.

[0011] In some embodiments, the touch sensor pad is located on one side of the light-emitting component.

[0012] In some embodiments, the touch sensing pad is U-shaped, and the touch sensing pad partially surrounds the light-emitting component.

[0013] Secondly, embodiments of this application also provide an electronic device, including the touch display device described above.

[0014] The beneficial effects of this application embodiment compared with related technologies are: the touch display device uses a capacitive sensing pad to realize touch input. The touch sensing pad is close to the display film, which reduces the thickness of the product. At the same time, it does not require elastic parts such as sponges and springs as support, avoiding poor contact of the display film or lifting of the display film, thus improving reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the display film in a touch display device provided in an embodiment of this application;

[0016] Figure 2 A side view of a touch display device provided in an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the structure of the bracket and touch sensor disk in a touch display device provided in an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the circuit board structure in a touch display device provided in an embodiment of this application;

[0019] Figure 5 A circuit diagram of the light-emitting component in a touch display device provided in an embodiment of this application;

[0020] Figure 6 A circuit diagram of a touch driving circuit in a touch display device provided in an embodiment of this application;

[0021] Figure 7 This is a circuit diagram of a connector in a touch display device provided in an embodiment of this application. Detailed Implementation

[0022] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0023] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0024] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0026] Please see Figures 1 to 6 An embodiment of this application provides a touch display device including a display film 100, a bracket 200 and a circuit board 300 stacked together. The circuit board 300 is provided with a touch sensor 310, a light-emitting component 320 and a touch driving circuit 330. The touch driving circuit 330 is connected to the touch sensor 310 and the light-emitting component 320. The bracket 200 has a hollow pattern 210 and a hollow area 220. The light-emitting component 320 is directly opposite the hollow pattern 210. The touch sensor 310 is located in the hollow area 220 and close to the back of the display film 100.

[0027] Among them, the light-emitting component 320 is composed of light-emitting LEDs, and the number and placement of the light-emitting LED components can be set according to the graphics to be displayed by the touch display device, without much limitation here.

[0028] The bracket 200 is mounted on the circuit board 300, and the display film 100 covers the touch sensor disk 310 and the bracket 200.

[0029] The touch display device uses a capacitive sensing disk to realize digital-analog input. The touch sensing disk 310 is close to the display film 100, which reduces the thickness of the product. At the same time, it does not require sponges, springs or other elastic parts as support, avoiding poor contact of the display film 100 or lifting of the display film 100, thus improving reliability.

[0030] Please see Figure 2 and Figure 3 In some embodiments, the circuit board 300 includes a first PCB board 301, which includes a first surface and a second surface opposite to the first surface. The first surface of the first PCB board 301 is opposite to the display film 100, and the light-emitting component 320 and the touch sensing pad 310 are located on the first surface of the first PCB board 301.

[0031] In this embodiment, the touch sensor 310 is directly disposed on the first PCB board 301. The touch sensor 310 is, for example, a conductive metal sheet that is separately fixed to the first surface of the first PCB board 301, or a copper plating formed on the first surface of the first PCB board 301. The conductive metal sheet or copper plating is electrically connected to the first PCB board 301 through vias, and then electrically connected to the touch driving circuit 330.

[0032] In some embodiments, the touch driving circuit 330 is disposed on the second surface of the first PCB board 301 to avoid occupying space on the first surface of the first PCB board 301, which would result in excessive thickness between the circuit board 300 and the display film 100, increasing the product thickness. In other embodiments, the touch driving circuit 330 can be disposed on the first surface of the first PCB board 301 without increasing the product thickness; for example, the touch driving circuit 330 can be disposed in an area of ​​the first PCB board 301 outside the display film 100.

[0033] Please see Figure 2 and Figure 3 In some embodiments, the circuit board 300 further includes a second PCB board 302, which is fixedly connected to the first PCB board 301. The second PCB board 302 has copper plating forming a touch sensing pad 310. In this embodiment, the circuit board 300 includes two PCB boards. The first PCB board 301 is provided with a light-emitting component 320 and a touch driving circuit 330, and the second PCB board 302 is provided with a touch sensing pad 310.

[0034] Please see Figure 3 In some embodiments, the second PCB board 302 includes an upper surface and a lower surface opposite to the upper surface. The lower surface of the second PCB board 302 is fixed to the first surface of the first PCB board 301, and the upper surface of the second PCB board 302 is provided with copper plating to form a touch sensing pad 310.

[0035] The lower surface of the second PCB board 302 is soldered and fixed to the pads on the first surface of the first PCB board 301 via pads. The pads on the lower surface of the second PCB board 302 are connected to the copper plating on the upper surface of the second PCB board 302 via vias.

[0036] In other embodiments, one end of the second PCB board 302 is fixedly connected to one end of the first PCB board 301, rather than being stacked, which can further reduce the product thickness.

[0037] Please see Figure 1 and Figure 3 In some embodiments, the front side of the display film 100 is provided with a display pattern 110, and the area on the back side of the display film 100 opposite to the cutout pattern 210 is coated with a fluorescent layer. It is understood that the pattern of the fluorescent layer should be consistent with the display pattern 110.

[0038] The bracket 200 is made of a lightweight, insulating, and light-shielding material, such as instant noodles or plastic. The light from the light-emitting component 320 passes through the perforated pattern 210 of the bracket 200 and shines onto the phosphor layer, allowing the light to pass through the display film and form the backlight of the display pattern 110.

[0039] In some embodiments, the touch sensor 310 is located on one side of the light-emitting component 320. In other embodiments, the touch sensor 310 may also be disposed within the area of ​​the light-emitting component 320.

[0040] In some embodiments, the touch sensor 310 is U-shaped, and the touch sensor 310 partially surrounds the light-emitting component 320. It is understood that there can be multiple touch sensor 310s, and their shapes can be designed into any shape according to product needs, such as circular, square, etc.

[0041] For example, refer to Figure 6 The light-emitting component 320 includes 6 groups of light-emitting LEDs. The first group includes LEDs A1-E1, the second group includes LEDs F1, G1, H1, A2, and B2, the third group includes LEDs C2-G2, the fourth group includes LEDs H2, A3, B3a, D3, and D3a, the fifth group includes LEDs E3, F3, G3, H3, and A4, and the sixth group includes LEDs B4, B4a, C4, C4a, C4b, D4, D4a, E4, E4a, and F4.

[0042] refer to Figure 6The touch driving circuit 330 typically includes a touch chip U1. The touch input terminal TP of the touch chip U1 is connected to the touch sensing disk 310. The touch chip U1 outputs the touch sensing signal KEY to the built-in or external display driving circuit (not shown) of the touch display device. The display driving circuit outputs a display driving signal to the light-emitting component 320 according to the touch sensing signal KEY, driving the light-emitting component 320 to display the corresponding information.

[0043] refer to Figures 5 to 7 For example, the display driving circuit is external to the touch display device. The touch chip U1 outputs the touch sensing signal KEY to the external display driving circuit through a connector J1. The display driving circuit transmits the display driving signal to the light-emitting component 320 through the connector J1.

[0044] Secondly, embodiments of this application also provide an electronic device, including the touch display device described above.

[0045] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A touch display device, characterized in that, The application relates to a touch display device, which comprises a display film, a support and a circuit board arranged in layers, wherein the circuit board is provided with a touch sensing disc, a light emitting component and a touch driving circuit, the touch driving circuit is connected with the touch sensing disc and the light emitting component, the support is provided with a hollow pattern and a hollow area, the light emitting component is opposite to the hollow pattern, and the touch sensing disc is located in the hollow area and close to the back of the display film. 2.The touch display device of claim 1, wherein, The circuit board comprises a first PCB board, the first PCB board comprises a first surface and a second surface opposite to the first surface, the first surface of the first PCB board is opposite to the display film, and the light emitting component and the touch sensing disc are located on the first surface of the first PCB board. 3.The touch display device of claim 2, wherein, The touch sensing disc comprises a conductive metal sheet fixed on the first surface of the first PCB board. 4.The touch display device of claim 3, wherein, The touch driving circuit is arranged on the second surface of the first PCB board. 5.The touch display device of claim 3, wherein, The circuit board further comprises a second PCB board, the second PCB board is fixedly connected with the first PCB board, and the second PCB board is provided with copper foil forming the touch sensing disc. 6.The touch display device of claim 5, wherein, The second PCB board comprises an upper surface and a lower surface opposite to the upper surface, the lower surface of the second PCB board is fixed on the first surface of the first PCB board, and the upper surface of the second PCB board is provided with copper foil forming the touch sensing disc. 7.The touch display device of claim 1, wherein, The front surface of the display film is provided with a display pattern, and the area of the back surface of the display film opposite to the hollow pattern is coated with a fluorescent layer. 8.The touch display device of claim 1, wherein, The touch sensing disc is located on one side of the light emitting component. 9.The touch display device of claim 1 or 8, wherein, The touch sensing disc is U-shaped, and the touch sensing disc partially surrounds the light emitting component.

10. An electronic device, comprising: The application further relates to a touch display device comprising any one of the touch display devices according to claims 1 to 9.

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