CN1322390C - key device - Google Patents

Abstract

The invention relates to a key device, which is arranged at one side of a display unit and comprises at least one key unit, wherein the key unit further comprises a first part, a second part and a third part, the first part is made of a light-transmitting material and is positioned on the top surface of the key unit, the second part is made of the light-transmitting material and is adjacent to the first part, at least one part of light emitted by the display unit penetrates through the second part, the third part is adjacent to the second part and is opposite to the first part, at least one part of the light penetrating through the second part is emitted to the third part, and then the light is reflected to the first part by the third part and penetrates through the first part.

Description

key device

technical field

The invention relates to a key device, especially a key device with a reflective layer capable of reflecting light from a display unit to illuminate the key.

Background technique

With the popularization of electronic devices, the occasions where various electronic devices are used are becoming more and more common. Among the input devices of many electronic devices, the keyboard is the most common input device. In order to enable the keyboard to be effectively recognized and used even in low light or in the dark without external light sources, the prior art has disclosed a keyboard technology that can emit light by itself.

As shown in Fig. 1 and Fig. 2, the existing luminous keyboard 1 comprises a light-emitting diode light source 11, and it obtains electric power through a wire 12; , and a rubber pad 133; and a light guide plate 14, which uniformizes the light emitted by the LED light source 11 and makes it penetrate from the light-transmitting area of the luminous keyboard 1, so that the luminous keyboard 1 can be evenly glow.

The existing luminous keyboard 1 needs an additional luminous element and its complicated circuit, so it consumes more energy and the process is more complicated. And if the light-emitting element is damaged, the keyboard cannot achieve the luminous effect. Therefore, how to manufacture a light-emitting key device without adding other light-emitting elements and complex circuits, so that the key can have enough light for users to identify is a problem that the relevant industry is eager to solve.

Contents of the invention

The object of the present invention is to overcome the deficiencies and defects of the prior art, and provide a key device with a reflective layer capable of reflecting light from a display unit to make the keys emit light.

In order to achieve the above purpose, according to the button device of the present invention, it is arranged on one side of a display unit, including: at least one button unit, and the button unit further includes: a first part, which is a light-transmitting material, and is located on the button a top surface of the unit; a second part, which is the light-transmitting material and adjacent to the first part, and at least a part of the light emitted by the display unit passes through the second part; and a third part, the first part The third part is adjacent to the second part and opposite to the first part, at least a part of the light passing through the second part hits the third part, and then is reflected from the third part to the first part and passes through The first part.

Based on the above, the button device of the present invention utilizes the translucent material of the button unit, so that the light from the display unit enters the button unit, and after being refracted to the reflective layer, at least part of the light is reflected to the text display part to form a luminous key, so the user can clearly identify the text on the key. Compared with the prior art, the key device of the present invention does not need additional light-emitting elements and complex circuits, so there is no need to worry about the damage of the light-emitting elements to make the keyboard unable to emit light, and it can save the power required for additional light-emitting elements.

Description of drawings

FIG. 1 is a schematic diagram of an existing luminous keyboard;

Fig. 2 is a sectional view of the luminous keyboard in Fig. 1 along the line A-A';

Fig. 3 is the schematic diagram of key device of the present invention;

Fig. 4 is a schematic diagram of the text display area of the button device of the present invention;

Fig. 5 is another schematic diagram of the text display area of the button device of the present invention;

6 is a schematic diagram of a key unit of the key device of the present invention;

7 is another schematic diagram of the key unit of the key device of the present invention;

FIG. 8 is a schematic diagram of using the button device of the present invention in an electronic device.

Explanation of symbols in the figure

1 Illuminated keyboard

11 LED light source

12 wires

13 buttons

131 Upper cover

132 keycaps

133 rubber cushion

14 Light guide plate

2 electronic devices

21 display unit

22 key unit

221 Part 1

222 Part Two

223 Part Three

224 text display area

Detailed ways

In order to make the content of the present invention easier to understand, the preferred embodiments of the electronic device and the key device of the present invention will be described below with reference to the relevant drawings.

First, please refer to FIG. 3 to describe the key device of the preferred embodiment of the present invention in detail.

The button device is arranged on one side of a display unit 21, including at least one button unit 22. A preferred embodiment has a plurality of button units 22, and the button unit 22 is arranged on the button device. In this embodiment, the button device is The keys of a laptop.

The display unit 21 is a display, and the display can be a liquid crystal display or an organic light emitting display. In this embodiment, the display unit 21 is an example of a display in a notebook computer, of course, the display unit 21 may also be a display of a personal computer.

The button unit 22 is integrally formed, and the material of the button unit is propylene-butadiene-styrene copolymer (ABS), polycarbonate (PC), polymethyl methacrylate (PMMA), or acrylic (Polyacrylate ). In addition, the button unit 22 can further act with a switch unit.

As shown in FIG. 3 , the button unit 22 further includes a first part 221 , a second part 222 , and a third part 223 .

Wherein, the first part 221 is located on a top surface of the key unit 22 , which is a pressing surface of the key unit 22 . Pressing down the first part 221 can change the height of the key unit 22 , and then trigger the switch located under the key. The first part 221 further includes a text display area 224 , so when the light is emitted from the first part 221 , the text display area 224 can be illuminated, so that the user can distinguish the text in the text display area 224 .

As shown in Figure 4, a text display area 224 is formed on the first part 221 by printing or coating method, which is the text "1" in this embodiment, such as printing or coating the opaque pigment on the diagonal line area, and then Translucent pigments are printed or coated on the text "1"; or printed or coated on the text "1" by using luminous substances (such as transparent media plus fluorescent powder). In this way, when the light penetrates the character display area 224 of the first part 221, the light can be emitted from the light-transmitting pigment or the place with luminescent substances to form a bright character "1", which is convenient for users Identify the text in the text display area.

In addition, as shown in Figure 5, the opaque pigment can be printed or coated on the text "1" (the oblique part), and then the translucent pigment can be printed or coated on the first part 221 text " 1” other areas. In this way, when the light passes through the first part 221, the light can be emitted from the area outside the text display area 224"1", so that the user can recognize the text in the text display area 224.

Referring to FIG. 6 , the second portion 222 is adjacent to the first portion 221 , and at least a part of the light emitted by the display unit 21 passes through the second portion 222 . The second portion 222 includes at least one surface, and in this embodiment, the second portion 222 includes two surfaces. The second part 222 is a light-transmitting material, which refracts the light emitted by the display unit 21 to the third part 223 .

The third part 223 is adjacent to the second part 222 and opposite to the first part 221 , and at least a part of the incident light hits the third part 223 , and then is reflected by the third part 223 to the first part 221 . The third portion 223 is a reflective layer or a mirror layer, or as shown in FIG. 7 , the third portion 223 may have a saw-toothed or a wavy surface. The incident light hits the third part 223 , and then is reflected by the third part 223 to the first part 221 , so that the light is emitted from the first part 221 to the key. In addition, when the surface of the third part 223 is sawtooth or wavy, other processes need to be added to combine with the integrally formed first part 221 and second part 222 .

Hereinafter, please refer to FIG. 8 and FIG. 3 to describe the electronic device 2 of the preferred embodiment of the present invention in detail.

Please refer to FIG. 8 , the electronic device 2 includes a display unit 21 and at least one key unit 22 , and the electronic device 2 is a notebook computer.

The button unit 22 is disposed on the electronic device 2 , and the button unit 22 further includes a first part 221 , a second part 222 , and a third part 223 .

The display unit 21 is a display, and the display can be a liquid crystal display or an organic light emitting display. In this embodiment, the display unit 21 is taken as an example of a display in a notebook computer, of course, the display unit 21 may also be a display of a personal computer.

The button unit 22 is integrally formed, and the material of the button unit is propylene-butadiene-styrene copolymer (ABS), polycarbonate (PC), polymethyl methacrylate (PMMA), or acrylic (Polyacrylate ). In addition, the button unit 22 can further act with a switch unit.

Referring to FIG. 3 again, the button unit 22 further includes a first portion 221 , a second portion 222 , and a third portion 223 .

Wherein, the first part 221 is located on a top surface of the key unit 22 , which is a pressing surface of the key unit 22 . Pressing down the first part 221 can change the height of the key unit 22 , and then trigger the switch located under the key. Moreover, the first part 221 further includes a text display area 224 , so when the light is emitted from the first part 221 , the text display area 224 can be illuminated, so that the user can distinguish the text in the text display area 224 .

As shown in Figure 4, a text display area 224 is formed on the first part 221 by printing or coating method, which is the text "1" in this embodiment, such as printing or coating the opaque pigment on the diagonal line area, and then Translucent pigments are printed or coated on the text "1"; or printed or coated on the text "1" by using luminous substances (such as transparent media plus fluorescent powder). In this way, when the light penetrates the character display area 224 of the first part 221, the light can be emitted from the light-transmitting pigment or the place with luminescent substances to form a bright character "1", which is convenient for users Identify the text in the text display area.

In addition, as shown in Figure 5, the opaque pigment can be printed or coated on the text "1" (the oblique part), and then the translucent pigment can be printed or coated on the first part 221 text " 1” other areas. In this way, when the light passes through the first part 221 , the light can be emitted from the area outside the text display area 224 ″ 1 ″, so that the user can recognize the text in the text display area 224 .

Referring to FIG. 6 , the second portion 222 is adjacent to the first portion 221 , and at least a part of the light emitted by the display unit 21 passes through the second portion 222 . The second portion 222 includes at least one surface, and in this embodiment, the second portion 222 includes two surfaces. The second part 222 is a light-transmitting material, which refracts the light emitted by the display unit 21 to the third part 223 .

The third part 223 is adjacent to the second part 222 and opposite to the first part 221 , and at least a part of the incident light hits the third part 223 , and then is reflected by the third part 223 to the first part 221 . The third portion 223 is a reflective layer, and the third portion 223 can be a mirror surface, or as shown in FIG. 7 , the third portion 223 can have a saw-toothed or a wavy surface. The incident light hits the third part 223 , and then is reflected by the third part 223 to the first part 221 , so that the light is emitted from the first part 221 to the key. In addition, when the third part 223 is in a zigzag shape or a wave shape, other processes need to be added to combine with the integrally formed first part 221 and second part 222 .

To sum up, the button device provided by the present invention utilizes the translucent material of the button unit, so that the light from the display unit enters the button unit, and after being refracted to the reflective layer, at least part of the light is reflected again. To the text display part, a luminous key is formed, so the user can clearly recognize the text on the key. Compared with the prior art, the electronic device and the button device of the present invention do not need to add additional light-emitting elements and complicated circuits, so there is no need to worry about the damage of the light-emitting elements and the failure of the keyboard to emit light, and the need for additional light-emitting elements can be omitted. electricity.

The above description is for illustration only, not for limitation. Any equivalent modification or change without departing from the spirit and scope of the present invention shall be included in the scope of the claims.

Claims (9)

1. A button device, which is arranged on one side of a display unit, is characterized in that it comprises: At least one key unit, and the key unit further includes: A first part is a light-transmitting material and is located on a top surface of the key unit; a second part is the light-transmitting material and is adjacent to the first part, and at least a part of the light emitted by the display unit passes through the second part; and A third part, the third part is adjacent to the second part and opposite to the first part, at least part of the light passing through the second part hits the third part, and then is reflected by the third part to the first part, and penetrate the first part. 2. The key device according to claim 1, wherein the first part is a pressing surface of the key unit, and the first part is pressed down to actuate the key unit. 3. The key device as claimed in claim 1, wherein the first part further comprises a text display area. 4. The key device according to claim 1, wherein the second portion at least comprises a key surface. 5. The key device as claimed in claim 1, wherein the second part refracts the light emitted by the display unit to the third part. 6. The key device according to claim 1, wherein the third portion has a reflective layer or a mirror. 7. The key device according to claim 1, wherein the third portion is in a saw-tooth shape or a wave shape. 8. The key device as claimed in claim 1, wherein the first part and the second part are integrally formed and joined with the third part. 9. The key device according to claim 1, wherein the material of the key unit is propylene-butadiene-styrene copolymer, polycarbonate, polymethyl methacrylate, or acrylic.

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