Key film touch panel structure

Abstract

The embodiment of the utility model belongs to the technical field of key film touch panels. The utility model further relates to a key film touch panel structure which comprises a key film body, an FPC body is bound to the key film body, LED lamp beads are installed at the bottom of the FPC body, a light guide plate body used in cooperation with the LED lamp beads is arranged on one side of the key film body, and a panel assembly is arranged on the side, away from the light guide plate body, of the key film body. The side, close to the light guide plate body, of the panel assembly is provided with a plurality of semi-transparent black ink layers in a silk-screen printing mode. According to the key film touch panel, the key film body and the LED lamp beads are connected together through the FPC body, integrated design is achieved, the key film touch panel structure is provided with lamplight, lamplight design does not need to be additionally added in the whole machine design, the design process is simplified, and due to the arrangement of the semi-transparent black ink layer, the appearance of the key is hollowed out, and the hidden effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of key film touch panels, and more specifically to a key film touch panel structure. Background Art

[0002] In the current electronic product market, key touch panels have become an indispensable part of many electronic devices. With the continuous development of technology, consumers have increasing requirements for product appearance, functions and user experience, especially in terms of visual effects and interactivity. Key touch panels with bright light functions are highly favored due to their uniqueness and convenience.

[0003] Traditional key touch panel designs often only have basic touch functions, and to achieve a bright light effect, it is usually necessary to add additional lighting design to the overall design, which not only increases the complexity of the design and prolongs the product design cycle, but also increases production costs and reduces the company's market competitiveness. Therefore, we have made improvements to this and proposed a key film touch panel structure.

[0004] For example, a Chinese patent (publication number CN218729657U) discloses a display panel, including a display area and a non-display area arranged around the display area; the display panel also includes: a cover plate, the cover plate has a key icon silk-screened in the non-display area; a thin film touch key, which is arranged on the back of the cover plate and corresponds to the key icon; a wire leads out from the thin film touch key, the wire is connected to a power source, and supplies power to the thin film touch key; an array substrate is arranged on the back of the thin film touch key. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present invention is that the traditional key touch panel design often only has basic touch functions, and to achieve a bright light effect, it is usually necessary to add additional lighting design to the overall machine design, which increases the complexity of the design and prolongs the product design cycle.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A key film touch panel structure comprises: a key film body, the key film body is bound to an FPC body, an LED lamp bead is installed at the bottom of the FPC body, and a light guide plate body used in conjunction with the LED lamp bead is arranged on one side of the key film body, a panel assembly is arranged on the side of the key film body away from the light guide plate body, and a plurality of semi-transparent black ink layers are silk-screened on the side of the panel assembly close to the light guide plate body. The present application connects the key film body and the LED lamp bead together through the FPC body, thereby realizing an integrated design, so that the key film touch panel structure has its own light, and there is no need to add additional lighting design to the overall machine design, thereby simplifying the design process. The setting of the semi-transparent black ink layer makes the key shape hollow have a hidden effect, so that the key shape hollow is not easily noticed when the LED lamp bead is off. When the LED lamp bead is lit, the key shape hollow is clearly visible, which is beautiful and elegant, while improving the convenience of user operation.

[0008] As an improvement of the utility model, a first double-sided adhesive is provided on a side of the key film body away from the panel assembly, and a side of the first double-sided adhesive away from the key film body is adhered to the light guide plate body.

[0009] As an improved manner of the utility model, a plurality of avoidance openings are provided on the first double-sided adhesive, and the number and positions of the avoidance openings correspond to the number and positions of the key positions of the key film body.

[0010] As an improved manner of the utility model, a diode is further arranged at the bottom of the FPC body, and the diode is located on one side of the LED lamp bead.

[0011] As an improved manner of the utility model, the panel assembly includes colorless transparent tempered glass, and a black ink layer is silk-screened on the colorless transparent tempered glass.

[0012] As an improved manner of the utility model, a plurality of key shape hollowings are arranged on the black ink layer, and the number and positions of the key shape hollowings correspond to the number and positions of the key positions of the key film body.

[0013] As an improved manner of the present invention, a plurality of the semi-transparent black ink layers are screen-printed on the black ink layer, and the positions of the plurality of the semi-transparent black ink layers respectively correspond to the positions of the hollowed-out key shapes.

[0014] As an improved manner of the utility model, a colorless transparent OCA adhesive layer is adhered to a side of the key film body away from the light guide plate body, and the colorless transparent OCA adhesive layer is connected to the semi-transparent black ink layer.

[0015] As an improved manner of the utility model, a notch is provided on one side of the colorless and transparent OCA adhesive layer, and the position of the notch corresponds to the position of the FPC body.

[0016] As an improved manner of the utility model, a second double-sided adhesive is provided on the side of the FPC body away from the key film body, and the second double-sided adhesive is used to achieve the connection between the FPC body and the black ink layer.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] In order to solve the problem that the key touch panel design in the prior art often only has basic touch functions, and to achieve the bright light effect, it is usually necessary to add additional lighting design to the overall machine design, which increases the complexity of the design and prolongs the design cycle of the product, the present application connects the key film body and the LED lamp beads together through the FPC body, thereby realizing an integrated design, so that the key film touch panel structure has its own light, and there is no need to add additional lighting design to the overall machine design, thereby simplifying the design process. The setting of the semi-transparent black ink layer makes the hollow shape of the key have a hidden effect, so that the hollow shape of the key is not easily noticed when the LED lamp beads are off. When the LED lamp beads are on, the hollow shape of the key is clearly visible, which is beautiful and elegant, while also improving the convenience of user operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the key film touch panel provided in this application;

[0020] Figure 2 The key film touch panel structure provided in this application Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 3 A schematic diagram of the structure of the colorless and transparent OCA adhesive layer of the key film touch panel structure provided in this application;

[0022] Figure 4 A schematic diagram of the structure of the key film touch panel structure provided in the present application with the key shape hollowed out;

[0023] Figure 5 This is a schematic diagram of the second double-sided adhesive structure of the key film touch panel structure provided in this application.

[0024] Indicated in the figure:

[0025] 1. Key film body; 2. FPC body; 3. LED lamp beads; 301. Diode; 4. Panel assembly; 401. Colorless and transparent tempered glass; 402. Black ink layer; 403. Key outline hollow; 5. Colorless and transparent OCA adhesive layer; 501. Notch; 6. First double-sided adhesive; 601. Avoidance; 7. Light guide plate body; 8. Second double-sided adhesive; 9. Semi-transparent black ink layer. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] As described in the background technology, traditional button touch panel designs often only have basic touch functions, and to achieve a bright light effect, it is usually necessary to add additional lighting design to the overall machine design, which not only increases the complexity of the design and prolongs the product design cycle, but also increases production costs and reduces the company's market competitiveness.

[0028] In order to solve this technical problem, the utility model provides a key film touch panel structure.

[0029] Specifically, please refer to Figure 1-Figure 2 , the key film touch panel structure specifically includes:

[0030] A key film body 1 is bound to an FPC body 2, an LED lamp bead 3 is installed at the bottom of the FPC body 2, and a light guide plate body 7 used in conjunction with the LED lamp bead 3 is arranged on one side of the key film body 1, a panel assembly 4 is arranged on the side of the key film body 1 away from the light guide plate body 7, and a plurality of semi-transparent black ink layers 9 are silk-screened on the side of the panel assembly 4 close to the light guide plate body 7.

[0031] The key film touch panel structure provided by the utility model connects the key film body 1 and the LED lamp bead 3 together through the FPC body 2, thereby realizing an integrated design. The key film touch panel structure has its own light, and there is no need to add additional lighting design in the overall machine design, thereby simplifying the design process. The provision of the semi-transparent black ink layer 9 makes the key shape hollow 403 have a hidden effect, so that the key shape hollow 403 is not easily noticed when the LED lamp bead 3 is off. When the LED lamp bead 3 is on, the key shape hollow 403 is clearly visible, which is beautiful and elegant, while improving the convenience of user operation.

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0033] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0035] Embodiment 1 of the key film touch panel structure of the utility model

[0036] Please refer to Figure 1-Figure 2 The key film touch panel structure of the utility model includes: a key film body 1, the key film body 1 is bound with an FPC body 2, an LED lamp bead 3 is installed at the bottom of the FPC body 2, and a light guide plate body 7 used in conjunction with the LED lamp bead 3 is arranged on one side of the key film body 1, a panel component 4 is arranged on the side of the key film body 1 away from the light guide plate body 7, and a plurality of semi-transparent black ink layers 9 are silk-screened on the side of the panel component 4 close to the light guide plate body 7. The present application connects the key film body 1 and the LED lamp bead 3 together through the FPC body 2, thereby realizing an integrated design, so that the key film touch panel structure has its own light, and there is no need to add additional light design in the overall machine design, thereby simplifying the design process.

[0037] Further, such as Figure 1As shown, a first double-sided adhesive 6 is provided on one side of the key film body 1 away from the panel assembly 4, and a side of the first double-sided adhesive 6 away from the key film body 1 is adhered to a light guide plate body 7, and the light guide plate body 7 guides the light direction of the LED lamp beads 3 to the key film body 1. The main function of the light guide plate body 7 is to evenly distribute the light of the LED lamp beads 3 throughout the key film body 1. Since the LED lamp beads 3 are point light sources, the light intensity distribution is uneven, which easily produces a "bright-dark-bright" stripe phenomenon, resulting in poor display effect or uneven lighting. The light guide plate body 7 refracts, reflects and scatters the light through a special internal line structure and optical principles, thereby achieving uniform lighting on the entire surface or side wall of the light guide plate body 7; the light guide plate body 7 can reduce the loss of light from the LED lamp beads 3 during transmission and improve the utilization efficiency of light energy, which helps to reduce energy consumption.

[0038] Further, such as Figure 1 and Figure 5 As shown, the first double-sided adhesive 6 is provided with a plurality of avoidance openings 601, the number and positions of the avoidance openings 601 correspond to the number and positions of the key positions of the key film body 1, and the setting of the avoidance openings 601 can prevent the first double-sided adhesive 6 from blocking the light of the key positions of the key film body 1.

[0039] Further, such as Figure 1 and Figure 2 As shown, a diode 301 is also provided at the bottom of the FPC body 2. The diode 301 is located on one side of the LED lamp bead 3. The diode 301 and the LED lamp bead 3 are connected in series. As a semiconductor device, the LED lamp bead 3 may be damaged when the reverse voltage exceeds its rated value. The series diode 301 can prevent the reverse voltage from damaging the LED lamp bead 3 and ensure that the LED lamp bead 3 operates within the normal operating voltage range. The LED lamp bead 3 needs to control the current when in use to avoid overcurrent, because overcurrent will damage the LED lamp bead 3 and shorten its life. The series diode 301 can limit the current. When the voltage or current exceeds a certain value, the diode 301 will automatically become a low resistance state, thereby limiting the current and protecting the LED lamp bead 3 from damage by overcurrent. This current limiting effect also helps to stabilize the current of the LED lamp bead 3 and ensure the brightness and stability of the LED lamp bead 3. By protecting the LED lamp bead 3 from damage by reverse voltage and overcurrent, the series diode 301 can improve the reliability and stability of the LED lamp bead 3 and extend the service life of the LED lamp bead 3.

[0040] Further, such as Figure 1As shown, the panel assembly 4 includes a colorless transparent tempered glass 401, on which a black ink layer 402 is silk-screened. The black ink layer 402 can cover the non-key position of the key film body 1. Firstly, it can highlight the key shape hollow 403, and secondly, it can cover other components to avoid exposure of other components, making the overall structure more concise.

[0041] Further, such as Figure 1 and Figure 3 As shown, a plurality of key shape hollows 403 are provided on the black ink layer 402 , the number and position of the key shape hollows 403 correspond to the number and position of the key positions of the key film body 1 , and the specific pattern of the key shape hollows 403 is set according to the function of the key position of the key film body 1 .

[0042] Further, such as Figure 1 As shown, a plurality of semi-transparent black ink layers 9 are screen-printed on the black ink layer 402 , and the positions of the plurality of semi-transparent black ink layers 9 correspond to the positions of the plurality of key outline hollows 403 .

[0043] Embodiment 2 of the key film touch panel structure of the utility model

[0044] The utility model further has a key film touch panel structure, such as Figure 1 As shown, a colorless and transparent OCA adhesive layer 5 is adhered to a side of the key film body 1 away from the light guide plate body 7, and the colorless and transparent OCA adhesive layer 5 is connected to the semi-transparent black ink layer 9. The setting of the semi-transparent black ink layer 9 makes the key shape hollow 403 have a hidden effect, so that the key shape hollow 403 is not easy to be noticed when the LED lamp bead 3 is off. When the LED lamp bead 3 is lit, the key shape hollow 403 is clearly visible, which is beautiful and elegant, and at the same time improves the convenience of user operation.

[0045] Further, such as Figure 4 As shown, a notch 501 is provided on one side of the colorless transparent OCA adhesive layer 5, and the position of the notch 501 corresponds to the position of the FPC body 2. The setting of the notch 501 can facilitate the binding of the FPC body 2 and the key film body 1 together. The colorless transparent OCA adhesive layer 5 is used to realize the connection between the key film body 1 and the panel assembly 4.

[0046] Embodiment 3 of the key film touch panel structure of the utility model

[0047] The utility model further has a key film touch panel structure, such as Figure 1 As shown, a second double-sided adhesive 8 is provided on the side of the FPC body 2 away from the key film body 1, and the second double-sided adhesive 8 is used to achieve the connection between the FPC body 2 and the black ink layer 402. Figure 1As a schematic diagram, in order to highlight the setting of the semi-transparent black ink layer 9, from the attached figure alone, it seems that the black ink layer 402 and the second double-sided adhesive 8 are not in contact and there is a large gap. In fact, the semi-transparent black ink layer 9 is only a thin layer. In actual application, the second double-sided adhesive 8 and the colorless transparent OCA adhesive layer 5 are both bonded to the black ink layer 402.

[0048] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A key film touch panel structure, characterized in that: include: A key film body (1), the key film body (1) being bound to an FPC body (2), an LED lamp bead (3) being installed at the bottom of the FPC body (2), and a light guide plate body (7) used in conjunction with the LED lamp bead (3) being arranged on one side of the key film body (1), a panel assembly (4) being arranged on a side of the key film body (1) away from the light guide plate body (7), and a plurality of semi-transparent black ink layers (9) being silk-screen printed on a side of the panel assembly (4) close to the light guide plate body (7).

2. The key film touch panel structure according to claim 1, characterized in that: A first double-sided adhesive (6) is provided on a side of the key film body (1) away from the panel assembly (4), and a side of the first double-sided adhesive (6) away from the key film body (1) is adhered to the light guide plate body (7).

3. The key film touch panel structure according to claim 2, characterized in that: The first double-sided adhesive (6) is provided with a plurality of avoidance openings (601), and the number and positions of the avoidance openings (601) correspond to the number and positions of the key positions of the key film body (1).

4. The key film touch panel structure according to claim 1, characterized in that: A diode (301) is also provided at the bottom of the FPC body (2), and the diode (301) is located on one side of the LED lamp bead (3).

5. The key film touch panel structure according to claim 1, characterized in that: The panel assembly (4) comprises a colorless transparent tempered glass (401), and a black ink layer (402) is silk-screened on the colorless transparent tempered glass (401).

6. The key film touch panel structure according to claim 5, characterized in that: A plurality of key outline hollows (403) are provided on the black ink layer (402), and the number and positions of the key outline hollows (403) correspond to the number and positions of key positions of the key film body (1).

7. The key film touch panel structure according to claim 6, characterized in that: The plurality of semi-transparent black ink layers (9) are all screen-printed on the black ink layer (402), and the positions of the plurality of semi-transparent black ink layers (9) respectively correspond to the positions of the plurality of key outline hollowings (403).

8. The key film touch panel structure according to claim 7, characterized in that: A colorless and transparent OCA adhesive layer (5) is adhered to a side of the key film body (1) away from the light guide plate body (7), and the colorless and transparent OCA adhesive layer (5) is connected to the semi-transparent black ink layer (9).

9. The key film touch panel structure according to claim 8, characterized in that: A notch (501) is provided on one side of the colorless and transparent OCA adhesive layer (5), and the position of the notch (501) corresponds to the position of the FPC body (2).

10. The key film touch panel structure according to claim 9, characterized in that: A second double-sided adhesive (8) is provided on a side of the FPC body (2) away from the key film body (1), and the second double-sided adhesive (8) is used to achieve connection between the FPC body (2) and the black ink layer (402).

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