A structure of increasing pressure-sensitive touchpad of light-emitting keyboard

Abstract

The utility model belongs to the technical field of electronic equipment, concretely relates to a kind of the structure of pressure-sensitive touch panel of light-emitting keyboard is increased, including substrate and circuit board, electrode of capacitive sensing is distributed on the circuit board, a plurality of luminous pieces are equipped on the circuit board, multiple grooves are distributed on the circuit board, the luminous piece is embedded in the groove, reflective sheet, light guide plate and glass panel are sequentially equipped from below to above on the circuit board, the lower of light guide plate is equipped with elastic layer, the lower surface of glass panel is equipped with dark ink layer, the dark ink layer has multiple openings, to form the light-transmitting port of keyboard symbol and number, between glass panel and light guide plate, there is also provided with hiding layer, reflective sheet, light guide plate, elastic layer and hiding layer jointly constitute light-emitting module, the periphery of light-emitting module is pasted with light-proof bubble surface layer, it carries out local light transmission processing to glass, increase the function of light-emitting keypad, improve the experience of user.

Description

Technical Field

[0001] This utility model belongs to the field of electronic equipment technology, specifically relating to a pressure-sensitive touchpad structure with an added backlit keyboard. Background Technology

[0002] Currently, keyboards are primarily used by customized clients such as banks, supermarkets, and accounting firms. Existing mainstream pressure-sensitive touchpads do not include an illuminated keypad. However, some touchpads on the market feature an illuminated keypad, combining the touchpad with a backlight module. When not illuminated, it functions as a regular touchpad (trajectory detection), such as controlling a mouse cursor. When illuminated, it displays specific patterns and performs functions corresponding to those patterns, such as displaying a numeric keypad and enabling touch input. The same applies to touchpad illumination devices disclosed in publication number CN 113920899 A. Although they can also function as illuminated keyboards, they lack the haptic feedback unique to pressure-sensitive touchpads, resulting in a poor user experience. Utility Model Content

[0003] To address the above problems and solve the aforementioned technical issues, this utility model discloses a pressure-sensitive touchpad structure with an added backlit keyboard. The specific technical solution is as follows: This utility model provides a pressure-sensitive touchpad structure for adding an illuminated keyboard, including a substrate and a circuit board disposed above the substrate. The circuit board has capacitive sensing electrodes and several light-emitting elements distributed on it. The circuit board has multiple grooves, and the light-emitting elements are embedded in the grooves. A reflector, a light guide plate, and a glass panel are arranged sequentially from bottom to top on the circuit board. An elastic layer is disposed below the light guide plate. A dark ink layer is disposed on the lower surface of the glass panel. The dark ink layer has multiple openings to form light-transmitting openings for keyboard symbols and numbers. A masking layer is also disposed between the glass panel and the light guide plate. The reflector, light guide plate, elastic layer, and masking layer together constitute a light-emitting module. A light-shielding foam layer is attached around the perimeter of the light-emitting module.

[0004] A further improvement of this utility model is that an adhesive backing layer is provided between the concealing layer and the glass panel.

[0005] A further improvement of this utility model is that the concealing layer is a diffusion sheet, a colored sheet, or a colored printed sheet.

[0006] A further improvement of this invention is that the elastic layer is made of a transparent material, so that light can penetrate the elastic layer when it is scattered upwards.

[0007] A further improvement of this utility model is that: the upper surface of the elastic layer has a plurality of protrusions evenly distributed, and the protrusions correspond one-to-one with the light-transmitting openings.

[0008] A further improvement of this utility model is that the cross-sectional shape of the protrusion is triangular, wavy, or arc-shaped.

[0009] A further improvement of this utility model is that a protective layer is provided above the light guide plate, and the protective layer is made of Mylar sheet.

[0010] Compared with existing technologies, this utility model achieves the following technical effects: Its structure is simple, and it partially transmits light through the glass, adding a backlit keypad function to the existing pressure-sensitive touchpad, enhancing the user experience, especially for users who frequently use the keypad's numeric keypad and external keypads, greatly improving convenience; the concealing layer effectively masks bright or dark spots caused by process environment or material defects, solving the problem of uneven light emission, thereby further improving product quality and light emission effect; a light-shielding foam layer is attached around the edges of the light-emitting module to block light leakage from the sides of the module, effectively preventing halo formation, thus achieving a uniform and consistent overall light emission effect for the backlit touchpad structure, meeting the requirements of end customers in terms of light emission effect and user experience. Attached Figure Description

[0011] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the light-transmitting opening of the dark ink layer in this utility model (showing a glass panel). Figure 3 This is a schematic diagram of the elastic layer in this utility model; Figure 4 This is a schematic diagram of the circuit board in this utility model; Among them, 1-substrate, 2-circuit board, 3-light-emitting element, 4-groove, 5-reflective sheet, 6-light guide plate, 7-glass panel, 8-dark ink layer, 9-light-transmitting opening, 10-elastic layer, 11-protrusion, 12-concealing layer, 13-light-shielding foam layer, 14-adhesive backing layer, 15-protective film. Detailed Implementation

[0012] The following will describe in detail the implementation of this utility model with reference to the accompanying drawings and embodiments, so that the implementation of this utility model can be fully understood and carried out based on how technical means are used to solve technical problems and achieve technical effects.

[0013] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0014] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0015] This embodiment provides a pressure-sensitive touchpad structure with an added backlit keyboard, including a substrate 1 and a circuit board 2 disposed above the substrate 1. The circuit board 2 has capacitive sensing electrodes (not shown in the figure, which are conventional components) distributed on it. The circuit board is provided with a plurality of light-emitting elements 3 and a plurality of grooves 4 distributed on it, with the light-emitting elements 3 embedded in the grooves 4.

[0016] The circuit board is topped with a reflector 5, a light guide plate 6, and a glass panel 7 arranged sequentially from bottom to top. The lower surface of the glass panel 7 has a dark ink layer 8 with multiple openings (the shapes of which correspond to keyboard symbols and numbers) to form light-transmitting openings 9 for these symbols and numbers. Below the light guide plate 6 is an elastic layer 10 made of transparent material, allowing light to pass through when scattered upwards. The upper surface of the elastic layer 10 has multiple protrusions 11 evenly distributed, each corresponding to a light-transmitting opening 9. The cross-sectional shape of each protrusion 11 is arc-shaped. A masking layer 12, made of colored printed material, is also provided between the glass panel 7 and the light guide plate 6. The reflector 5, light guide plate 6, elastic layer 10, and masking layer 12 together constitute a light-emitting module. A light-shielding foam layer 13 is attached around the perimeter of the light-emitting module. An adhesive layer 14 is provided between the concealer layer 12 and the glass panel 7, and a protective layer 15 is provided above the light guide plate 6. The protective layer 15 is made of Mylar film.

[0017] This embodiment provides a pressure-sensitive touchpad structure with an added illuminated keyboard. The light-emitting element 3 is embedded in a groove 4 of the circuit board 2. The inner wall of the groove 4 is made of light-blocking material. The light source is evenly diffused to the light-transmitting opening 9 through a reflector 5 and a light guide plate 6 to form an illuminated keyboard. An elastic layer 10 is provided below the light guide plate 6, with protrusions 11 corresponding to the light-transmitting opening 9, to buffer the components below the light guide plate 6, preventing damage to the product from prolonged use and effectively extending its lifespan. A masking layer 12 is provided between the light guide plate 6 and the glass panel 7 to effectively shield against... Bright spots or dark spots caused by process environment or material defects are addressed to solve the problem of uneven light emission, thereby further improving product quality and light emission effect. In addition, a light-shielding foam layer 13 is attached around the edge of the light-emitting module to block light from leaking from the side of the light-emitting module, effectively preventing the generation of halo, and thus making the overall light emission effect of the light-emitting touch panel structure uniform. A protective layer 15 is set above the light guide plate 6 to protect the light guide plate 121 (the protective layer 14 can be omitted if the material strength of the light guide plate 121 is sufficient).

[0018] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A pressure-sensitive touchpad structure with an added backlit keyboard, comprising a substrate and a circuit board disposed above the substrate, characterized in that: The circuit board has capacitively induced electrodes and several light-emitting elements. Multiple grooves are distributed on the circuit board, and the light-emitting elements are embedded in these grooves. A reflector, a light guide plate, and a glass panel are arranged sequentially from bottom to top on the circuit board. An elastic layer is located below the light guide plate. A dark ink layer is located on the lower surface of the glass panel, and the dark ink layer has multiple openings to form light-transmitting openings for keyboard symbols and numbers. A masking layer is also provided between the glass panel and the light guide plate. The reflector, light guide plate, elastic layer, and masking layer together constitute the light-emitting module. A light-shielding foam layer is attached around the perimeter of the light-emitting module.

2. The pressure-sensitive touchpad structure with added backlit keyboard according to claim 1, characterized in that: An adhesive layer is provided between the concealer layer and the glass panel.

3. The pressure-sensitive touchpad structure with added backlit keyboard according to claim 1, characterized in that: The concealer layer is a diffuser sheet, a colored sheet, or a colored printed sheet.

4. The pressure-sensitive touchpad structure with added backlit keyboard according to claim 1, characterized in that: The elastic layer is made of a transparent material, allowing light to pass through it when it is scattered upwards.

5. The pressure-sensitive touchpad structure with added backlit keyboard according to claim 1, characterized in that: The upper surface of the elastic layer has multiple protrusions evenly distributed, and each protrusion corresponds to a light-transmitting opening.

6. The pressure-sensitive touchpad structure with added backlit keyboard according to claim 5, characterized in that: The cross-sectional shape of the protrusion is triangular, wavy, or arc-shaped.

7. The pressure-sensitive touchpad structure with added backlit keyboard according to claim 1, characterized in that: A protective layer is provided above the light guide plate, and the protective layer is made of Mylar sheet.

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