CN201117495Y - Key panel structure with lateral lighting key surface - Google Patents

Abstract

A key panel with a laterally illuminated key surface for mounting on an electronic device. The key panel includes: a light guide plate and a panel. The light guide plate is provided with a carrier, the side surface of the carrier is provided with a plurality of convex strips, the other side surface of each convex strip corresponding to the carrier is provided with a plurality of light guide particles, and the top surfaces of the convex strips are provided with reflecting layers. The panel is arranged on the side surface of the carrier, a plurality of rectangular keys are arranged on the panel, a pattern is arranged on the side surface of each key, a plurality of hollow parts are arranged between each key and the panel, and each hollow part surrounds a rectangle and corresponds to the convex strip of the carrier. After the convex strip passes through the hollow part, the height of the convex strip is higher than that of the key and the pattern. After light generated by a backlight source of the electronic device is guided in from one side of the light guide plate, the light is intensively irradiated on the raised lines through the light guide particles and then is irradiated on the surface of the key from the side edges of the raised lines, so that a user can clearly see patterns on the surface of the key.

Description

Key panel construction with side-illuminated key surfaces

technical field

The utility model relates to a key panel, in particular to a key panel structure with a side-illuminated key surface.

Background technique

Buttons are one of the main input devices of electronic devices. Each button on the button usually has corresponding numbers, characters, phonetic symbols, radicals of input methods and various functional graphics, etc., so that users can input data, or execute functions of electronic devices. Therefore, the key is an extremely important input device for the electronic device.

Since the electronic device is in a well-lit environment, the user can clearly see the position of each button, and problems such as pressing the wrong button will not occur during operation and pressing. In an environment with no light or insufficient light, it is difficult for the user to operate the buttons on the electronic device. Therefore, a backlight module is disposed on the inner layer of the key structure, and the light generated by the backlight module allows the user to clearly see the position of each key and the pattern on the surface of the key in a dark environment.

Referring to FIG. 1 , the backlight module used inside the conventional button at least includes: a light guide plate 10 and a light emitting diode (cold light plate) 20 . When the electronic device is activated, after the LED 20 is lit, the light 201 can be introduced from the side (or bottom) of the light guide plate 10, and then the light guide plate 10 projects the light onto the bottom of each key 30, so that the light 201 passes through the key 30 The pattern 301 on the surface, so the pattern 301 on the surface of the button 30 is presented, so as to prevent the user from pressing the button 30 by mistake.

In order to allow light to pass through the surface of the key 30 from the bottom of the key 30, the pattern 301 on the surface of the key 30 is made into a hollow state by etching or punching, or a transparent light is made on the transparent key 30 body through printing technology or electroplating technology. Light ink or color layers. As a result, the man-hours and processes for making the buttons are increased, and the cost is also increased.

Utility model content

Therefore, in view of the above-mentioned defects, the main purpose of this utility model is to provide a key panel structure with a side-illuminated key surface, using the key panel structure, the backlight effect can be irradiated on the key surface by the side of the key, and the backlight effect is better. The user can see the position of each key more clearly; and the key panel is easier to manufacture.

In order to achieve the above-mentioned purpose, the button panel with side lighting button surface of the present invention is used to configure on the electronic device, which includes: a light guide plate, the light guide plate has a carrier, and the front of the carrier is provided with A plurality of convex lines, each of which is surrounded by a rectangle, and each of the convex lines is provided with a plurality of light guide particles corresponding to the back of the carrier; and a panel, configured on the front of the carrier, on which A plurality of rectangular buttons, each of which is provided with a pattern on the surface, and a plurality of hollows are arranged between each of the buttons and the panel, and the hollows form a rectangle and correspond to the front of the carrier. Each convex strip; wherein, after the convex strip passes through the hollow part, the height of the convex strip is higher than that of the key and the pattern.

When the button panel structure with side-illuminated button surface of the utility model is used as the button panel, the backlight effect can be irradiated on the button surface by the side of the button, the backlight effect is better, and the user can see the position of each button more clearly; And the button panel is easier to manufacture.

Description of drawings

FIG. 1 is a schematic structural diagram of a traditional metal button panel.

Fig. 2 is an exploded schematic view of the button panel of the present invention.

Fig. 3 is a schematic front view of the button panel of the present invention.

FIG. 4 is a schematic side view of the button panel of the present invention.

Fig. 5(a) is a schematic diagram of the configuration of the button panel and the circuit module of the present invention.

FIG. 5( b ) is a schematic side view of the configuration of the button panel and the circuit module of the present invention.

Fig. 5(c) is a partially enlarged schematic diagram of Fig. 5(b).

FIG. 6 is a schematic diagram of the action of the button panel of the present invention.

Fig. 7 is a schematic diagram of the application of the metal button panel of the present invention on a mobile phone.

FIG. 8 is a schematic diagram of applying the metal button panel of the present invention to a personal digital assistant device.

Fig. 9 is a schematic diagram of the application of the metal button panel of the present invention on the car audio panel.

[Description of main component symbols]

current technology:

Light guide plate 10 Light-emitting diodes 20

Light 201 Button 30

pattern 301

The utility model:

Light guide plate 1 carrier 11

Convex 12 Light-guiding particles 13

reflective layer 14 panel 2

Button 21 Pattern 22

Hollow part 23 circuit module 3

Flexible printed circuit board 31 Contact point 311

Metal shrapnel 32 Shrapnel film 33

Convex body 34 Light source group 35

LED 351 Light 4

Cell Phone5 Personal Digital Assistant Device (PDA)6

Car Audio Panel 7

Detailed ways

Below in conjunction with accompanying drawing, technical content of the present utility model is described in detail:

Referring to Figs. 2, 3 and 4, they are schematic diagrams of structural decomposition, front and side sectional views of the button panel of the present invention, respectively. As shown in the figure: the button panel structure of the utility model with side illuminated button surface includes a light guide plate 1 and a panel 2 . in,

The light guide plate 1 is made of plastic or rubber. There is a carrier 11 on the light guide plate 1, and a plurality of convex strips 12 are arranged on the front of the carrier 11, and each convex strip 12 forms a rectangle, and each convex strip 12 is provided with a plurality of light guiding particles 13 corresponding to the back of the carrier 11. The light particles 13 can be recessed inside the carrier 11 or protruded outside the carrier 11 . In addition, a reflective layer (or light-shielding layer) 14 is provided on the top surface of the protrusion 12 , and when light (not shown in the figure) irradiates the reflective layer 14 , the reflective layer 14 can reflect the light.

The panel 2 is made of metal or plastic and is arranged on the front of the carrier 11 . The panel 2 is provided with a plurality of rectangular buttons 21, and a pattern 22 is arranged on the side of each button 21. The pattern 22 includes numbers (0-9), characters (A-Z), special symbols (for example, #, * and .), dial pattern, end pattern and direction symbols, etc. In addition, a plurality of hollow parts 23 are disposed between each button 21 and the panel 2 , and each hollow part 23 encloses a rectangle and corresponds to the convex strip 12 on the front surface of the carrier 11 . After the convex strip 12 passes through the hollow portion 23 , the height of the convex strip 12 is higher than that of the button 21 and the pattern 22 .

Referring to Figures 5(a) to 5(c), they are schematic diagrams of the key panel and circuit module configuration, side view and partial enlargement of the present invention, respectively. As shown in the figure: when the button panel is combined with the circuit module 3 , the circuit module 3 is pasted on the side of the light guide plate 1 . The circuit module 3 has a flexible printed circuit board (FPCB) 31, the circuit board 31 is provided with a plurality of contact points 311, each contact point 311 corresponds to a metal dome (Metal Dome) 32, and then the circuit board 31 and the metal dome 32 A shrapnel film 33 is provided on the side of the shrapnel film 33, and a plurality of protrusions 34 are arranged on the shrapnel film 33, and the protrusions 34 correspond to each button 21 of the panel 2.

In addition, a light source group 35 is provided on the side of one end of the circuit board 31 . The light source group 35 is composed of a plurality of light emitting diodes 351 .

When the electronic device is activated, the light 4 generated by the light emitting diodes 351 of the light source group 35 on the circuit board 31 is guided in from one side of the light guide plate 1 . After the light 4 passes through the light-guiding particles 13 of the light-guiding plate 1 , the light-guiding particles 13 will irradiate the light 4 on the convex strip 12 intensively. After being reflected by the reflective layer 14 , the light 4 is irradiated on the surface of the key 21 from the side of the convex strip 12 , so that the user can clearly see the pattern 22 presented on the surface of the key 21 .

Referring to FIG. 6 , it is a schematic diagram of the pressing action of the button panel of the present invention. As shown in the figure: when the surface of the button 21 of the panel 2 is pressed by an external force, the button 21 is deformed, and the convex body 34 is driven to press down on the elastic sheet film 33, so that the metal elastic sheet 32 is deformed and pressed down to contact the contact point 311, thereby Generates a turn-on signal output.

When the surface of the button 21 is not pressed by external force, the button 21 automatically rises back to the original state due to the elasticity of the materials of the panel 2 and the metal dome 32 .

Referring to FIG. 7 , it is a schematic diagram of the button panel of the present invention applied to a mobile phone. As shown in the figure: when the button panel of the present utility model is installed on the mobile phone 5 and used. After the light is introduced into the light guide plate 1, the light is irradiated on the surface of the key 21 from the side of the convex strip 12. In addition to allowing the user to clearly see the pattern 22 presented on the surface of the key 21, it can also increase the overall appearance of the mobile phone 5. Beautiful appearance.

Referring to FIG. 8 , it is a schematic diagram of applying the metal button panel of the present invention to a personal digital assistant device. As shown in the figure: the button panel of the present utility model can also be applied to the personal digital assistant device (PDA, Personal Digital Assistant) 6 except that it can be applied to the mobile phone 5. After the light is introduced into the light guide plate 1, the light is irradiated on the surface of the key 21 from the side of the convex strip 12. In addition to allowing the user to clearly see the pattern 22 presented on the surface of the key 21, a personal digital assistant device (personal digital assistant) can also be added. PDA) 6 overall appearance is beautiful.

Referring to FIG. 9 , it is a schematic diagram of applying the metal button panel of the present invention to a car audio panel. As shown in the figure: in addition to being applicable to mobile phones 5 and personal digital assistants (PDAs) 6, the button panel of the present utility model can also be installed on car audio panels 7 to control air-conditioning systems, audio-visual systems and satellite navigation systems. and so on.

The above are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. All other equivalent changes or modifications made in the claims of the present utility model shall be included in the patent scope of the present utility model. .

Claims (13)

1. A button panel with a side-illuminated button surface for disposing on an electronic device, the button panel comprising: A light guide plate, the light guide plate has a carrier, the front of the carrier is provided with a plurality of convex strips, each of the convex strips is surrounded by a rectangle, and each of the convex strips is provided with a plurality of guide strips corresponding to the back of the carrier. light particles; and The panel is arranged on the front of the carrier, and a plurality of rectangular keys are arranged on it, each of the keys is provided with a pattern on the surface, and a plurality of hollow parts are arranged between each of the keys and the panel, so The hollow part is surrounded by a rectangle and corresponds to each convex strip on the front side of the carrier; It is characterized in that, after the convex strip passes through the hollow part, the height of the convex strip is higher than that of the key and the pattern. 2. The key panel with side-illuminated key surfaces according to claim 1, wherein the light guide plate is made of plastic material. 3. The key panel with side-illuminated key surfaces according to claim 1, wherein the light guide plate is made of rubber material. 4 . The key panel with side-illuminated key surfaces according to claim 1 , wherein the light-guiding particles are recessed inside the carrier. 5 . The key panel with side-illuminated key surfaces as claimed in claim 1 , wherein the light-guiding particles are protruded outside the carrier. 5 . 6 . The key panel with side-illuminated key surfaces according to claim 1 , wherein a reflective layer is provided on the top surface of the raised strips. 7 . 7. The key panel with side-illuminated key surfaces according to claim 1, wherein a light-shielding layer is provided on the top surface of the raised strip. 8. The key panel with side-illuminated key surfaces according to claim 1, wherein the panel is made of metal material. 9. The key panel with side-illuminated key surfaces of claim 1, wherein the panel is made of plastic material. 10. The key panel with a side-illuminated key surface according to claim 1, wherein the pattern includes numbers (0-9), characters (A-Z), special symbols (for example, #, * and .), dial pattern, end pattern, and direction symbols. 11. The key panel with side-illuminated key surfaces according to claim 1, further comprising a circuit module attached to the side surface of the light guide plate. 12. The key panel with a side-illuminated key surface as claimed in claim 11, wherein the circuit module has a flexible printed circuit board, and the circuit board is provided with a plurality of contact points, and each of the The contact point corresponds to a metal dome, and the circuit board and the side of the metal dome are provided with a dome film, and a plurality of convex bodies are arranged on the dome film, and the protrusions correspond to each key on the panel. 13. The button panel with a side-illuminated button surface as claimed in claim 12, wherein a light source group is arranged on the side of one end of the circuit board, and the light source group is composed of a plurality of light-emitting diodes, and the The place where the light source of the light emitting diode is generated corresponds to one side of the light guide plate.

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