CN103000424A - illuminated keyboard - Google Patents

Abstract

The invention relates to a luminous keyboard which comprises a plurality of keys, a first luminous element, a second luminous element and a light guide plate. The light guide plate is provided with a first light guide area, a second light guide area and an inner laser engraving area, wherein the first light guide area is used for guiding a first light beam generated by the first light-emitting element, and the second light guide area is used for guiding a second light beam generated by the second light-emitting element. The inner laser engraving area positioned between the first light guide area and the second light guide area can isolate the first light beam and the second light beam, and the inner laser engraving area is formed in the light guide plate without damaging the structure of the light guide plate, so that the structure of the light guide plate is firmer, and the light-emitting keyboard is firmer.

Description

illuminated keyboard

technical field

The invention relates to a keyboard, in particular to a luminous keyboard with a luminous function.

Background technique

The keyboard is a commonly used computer peripheral device for inputting text or commands to the computer, and various manufacturers are devoting themselves to the development of the keyboard to enhance its functionality and convenience. In order to operate the keyboard in a dark environment, various manufacturers currently use a cold light board inside the keyboard and use it as a light source. When the cold light board is supplied with power, the cold light board is driven to emit light beams, so that The keyboard has a glowing effect. However, this type of cold light panel can only emit a single color light beam, so that the existing luminous keyboard can only present a single luminous color. Another existing method is to install a light emitting diode (Light Emitting Diode, LED) under each button as a point light source. However, installing LEDs under each key not only has the problem of high cost, but also causes the problem of poor heat dissipation of the light-emitting keyboard.

In order to solve the above two problems, China Taiwan Patent Publication No. TW200945113 discloses a luminous keyboard. Please refer to FIG. 1 , which is a schematic diagram of the appearance and structure of an existing keyboard. Existing keyboard 10 has a plurality of keys, such as numeral key, symbol key, letter key, direction key, space bar and function key etc., wherein represents the letter key of W key, A key, S key and D key, space bar, Keys such as the input key (Enter) and the arrow keys representing up, down, left, and right can respectively present different luminescent colors from other keys, and the existing keyboard 10 is a keyboard for a notebook computer.

Next please refer to FIG. 2 , which is a schematic cross-sectional view of the A-A' section of the existing luminous keyboard in FIG. 1 . The conventional light-emitting keyboard 10 includes a key module 100 and a light-emitting module 200 , and the light-emitting module 200 is located below the key module 100 . The button module 100 includes a plurality of buttons 112, 114, an elastic body 120, a scissors-type connection element 130, and a membrane switch circuit 140. The plurality of buttons 112, 114 are used to be pressed by the user to input corresponding signals, thereby providing instructions. A computer (not shown in the figure) connected to the existing luminous keyboard 10 controls the executed program. The light emitting module 200 includes a shielding element 210 , a light guide plate 220 , a reflective sheet 230 , a first light emitting element 240 and a second light emitting element 250 . The light guide plate 220 includes a first light guide area 222, a second light guide area 224 and a light shielding area 226, and the light shielding area 226 is between the first light guide area 222 and the second light guide area 224, wherein the light shielding area 226 is A disconnected gap divides the light guide element 220 into a first light guide area 222 and a second light guide area 224 . A preferred method is to additionally arrange a light-shielding material or a reflective material 227 on the light-shielding area 226, and the light-shielding material or reflective material 227 is arranged on at least one side adjacent to the first light-guiding area 222 or the second light-guiding area 224, so as to Improve its shading effect.

In the light emitting module 200, the first light emitting element 240 is used to generate a light beam of a first color (such as white light), and the light beam of the first color is projected on the first light guide area 222, and the second light emitting element 250 is used to generate a second light beam. color light beam (such as blue light), and the light beam of the second color is projected on the second light guide area 224, wherein the light shielding area 226 blocks the first light guide area 222 and the second light guide area 226, so that the light beam of the first color and The light beams of the second color do not mix with each other.

The masking element 210 has a preset pattern for being penetrated by the light beam of the first color or the light beam of the second color generated by the first light emitting element 240 or the second light emitting element 250 so as to reduce the scattering of the light beam, wherein the mask The element 210 may use light-shielding pigments or resin films coated with light-shielding pigments, such as polyethylene terephthalate (PET) films or polyvinyl chloride (PVC) films. The cover element 210 has a plurality of openings 215, and the positions of the plurality of openings 215 correspond to the positions where the plurality of keys want to emit light, so that the light beam guided by the light guide element 220 can be projected to the corresponding keys (such as buttons 112 and 114). Moreover, in order to prevent the beam from being scattered by the gaps between the keys, the plurality of openings 215 on the masking element 210 can be designed to be slightly smaller than the size of the key surface, as shown in FIG. 2 .

The light guide plate 220 is located under the shielding element 210 and is used to guide the light beams of the first color and the light beams of the second color as a light transmission medium. In the light guide plate 220, the first light guide area 222, the second light guide area 224 and the light shielding area 226 are integrally formed, and the light shielding area 226 (that is, the gap) surrounds the second light guide area 224 to form a first The light guiding area 222 , the second light guiding area 224 and the light shielding area 226 are shown in FIG. 3 .

In FIG. 2 and FIG. 3 , a plurality of first light-emitting elements 240 are adjacent to at least one side of the first light-guiding region 222 , so that the light beams of the first color generated by the first light-emitting elements 240 can pass through the first light-guiding region 222 are guided and pass through the opening 215 of the cover element 210 , so that some of the keys (such as the key 112 ) of the key module 100 are displayed in the first color. On the other hand, at least one second light-emitting element 250 is disposed in each second light-guiding area 224, so that the light beam of the second color generated by the second light-emitting element 250 can be guided by the second light-guiding area 224, And through the opening 215 above the second light guide area 224 , the key corresponding to the second light guide area 224 in the key module 100 (such as the key 114 ) is displayed in the second color. The position, size, quantity distribution, etc. of the second light guide area 224 can be determined according to the position of the key corresponding to the light of the second color, for example, it is located under the letter keys of the W key, the A key, the S key, and the D key and presents It is a convex font, a rectangle under the space bar, etc. The reflective sheet 230 is located under the light guide plate 220 to reflect the light beam of the first color or the light beam of the second color scattered by the light guide element 220 for reuse, so as to improve light utilization efficiency and avoid light beam scattering.

The first light-emitting element 240 and the second light-emitting element 250 are light-emitting diodes that can generate light of different colors, so that the button module 100 can display different colors at preset positions. For example, the first light-emitting element 240 can be a white light-emitting diode, and the second light-emitting element 250 can be a blue light-emitting diode, then the button module 100 will have a first color block (such as the button 112) showing white light and blue light. The second color block (such as button 114).

The above is the structure and operating principle of the luminous keyboard with multi-color display function, which can provide the user with keys displayed in multiple colors, so that the user can identify and operate the keys in a dark environment. However, since the light guide plate 220 has a plurality of disconnected light-shielding regions 226 (ie gaps), the structure of the light guide plate 220 becomes fragile and easily damaged. Therefore, there is a need for a stronger luminous keyboard.

Contents of the invention

A technical problem to be solved by the present invention is to provide a light-emitting keyboard with a stronger structure in view of the above-mentioned shortcomings in the prior art.

The technical solution adopted by the present invention to solve the technical problem is to provide a light-emitting keyboard, which includes a plurality of keys, a first light-emitting element, a second light-emitting element, and a light guide plate, and the first light-emitting element is arranged under the plurality of keys , to generate a first light beam; the second light-emitting element is arranged under the plurality of keys and adjacent to the first light-emitting element, to generate a second light beam; the light guide plate is arranged under the plurality of keys and Located on one side of the first light-emitting element, and the light guide plate includes a first light-guiding area, a second light-guiding area, and an inner laser-engraved area, the first light-guiding area is located on the side of the first light-emitting element, for guide the first light beam to be projected to the first key area of the plurality of keys; the second light guide area is located on one side of the second light emitting element, and is used to guide the second light beam to be projected to the first key area of the plurality of keys Two button areas; the inner laser engraving area is located between the first light guide area and the second light guide area, and is used to isolate the first light beam and the second light beam.

Preferably, the first light emitting element and the second light emitting element are light emitting diodes (Light Emitting Diode, LED), and the first light beam is displayed in a first color, and the second light beam is displayed in a second color.

Preferably, the luminous keyboard further includes a membrane switch circuit, a main circuit board, a luminous circuit board and a base, the membrane switch circuit is located between the plurality of keys and the light guide plate, and has a plurality of keys corresponding to the plurality of keys. a button contact; the main circuit board is connected to the membrane switch circuit and is located on one side of the membrane switch circuit, to provide a power to the membrane switch circuit; the light-emitting circuit board is located on the other side of the membrane switch circuit, It is used to set the first light-emitting element and the second light-emitting element on it and provide another power to the first light-emitting element and the second light-emitting element; the base is located under the plurality of keys to carry the plurality of keystrokes.

Preferably, each of the plurality of keys includes a key cap, a scissor-type connection element and an elastic body, and the scissors-type connection element is located between the base and the key cap to connect the base and the key cap and make the key cap Move up and down relative to the base; the elastic body is located between the membrane switch circuit and the key cap, when the key cap is pressed, the elastic body is compressed and resists the membrane switch circuit to trigger the key contact; And when the key cap is no longer pressed, the elastic body provides elastic force to the key cap to reset the key cap.

Or, preferably, each of the plurality of keys includes a key cap, a key shell and an elastic body, the key shell is located between the base and the key cap, and is used to carry the key cap; the elastic body passes through the key The casing is located between the membrane switch circuit and the key cap. When the key cap is pressed, the elastic body is compressed and resists the membrane switch circuit to trigger the key contact; and when the key cap is no longer When being pressed, the elastic body provides elastic force to the keycap to reset the keycap.

Preferably, the luminous keyboard further includes a third light-emitting element and another light guide plate, the third light-emitting element is located below the first light-emitting element to generate a third light beam; the other light guide plate is arranged on the light guide plate The light plate is located below and on one side of the third light-emitting element, and is used for guiding the third light beam to be projected to a key sub-area in the second key area.

Preferably, the third light emitting element is arranged on a light emitting circuit board, and the third light emitting element is a light emitting diode, and the third light beam is displayed in a third color; when the third light beam is projected onto the button When the area is on, the button sub-area changes from displaying the second color to displaying a fourth color formed by mixing the second color and the third color.

Preferably, the luminous keyboard further includes a second reflective sheet located under the other light guide plate for reflecting the third light beam so that the third light beam enters the other light guide plate again.

Preferably, the luminous keyboard further includes a first reflective sheet, the first reflective sheet is located between the light guide plate and the other light guide plate, and is used to reflect the first light beam so that the first light beam enters the light guide plate again. The light plate, and the first reflective sheet has at least one opening, the at least one opening is located below the button sub-area, and is used to allow the third light beam to pass through the at least one opening so that the third light beam is projected to The button subregion.

Preferably, the luminous keyboard further includes a fourth luminous element, which is adjacent to the third luminous element and used to generate a fourth light beam, and the other light guide plate includes a third light guide area, a first Four light guide areas and another inner laser engraving area, the third light guide area is located on the side of the third light-emitting element, and is used to guide the third light beam to be projected to the first key area of the plurality of keys; The fourth light guide area is located on one side of the fourth light-emitting element, and is used to guide the fourth light beam to be projected to another key sub-area of the first key area; the other inner laser engraving area is located on the third light guide area. The region and the fourth light guide region are used to isolate the third light beam and the fourth light beam.

Preferably, the inner laser engraving area is formed by performing inner laser engraving technology in the light guide plate.

The luminous keyboard of the present invention can display multiple colors, so that users can identify different key areas by visually identifying different colors, and can also allow users to identify specific keys by displaying colors different from the key area in key sub-areas The location of the sub-region, and the setting of each light-emitting element is more convenient. Furthermore, in order to avoid the mixing of beams of multiple colors, the light-emitting keyboard of the present invention is provided with an inner laser engraving area in the light guide plate to block the passage of beams, so that the mixing of beams of multiple colors can be avoided, and the inner laser engraving area is the inner laser engraving area. The laser engraving technology is formed inside the light guide plate without damaging the surface of the light guide plate, so the light guide plate has a stronger structure, making the luminous keyboard of the present invention stronger and less prone to breakage.

Description of drawings

FIG. 1 is a schematic diagram of the appearance and structure of a conventional keyboard.

Fig. 2 is a schematic cross-sectional view of the structure of the existing luminous keyboard.

Fig. 3 is a schematic top view of the structure of the conventional luminous keyboard.

Fig. 4 is an exploded schematic view of the structure of the luminous keyboard in the first preferred embodiment of the present invention.

Fig. 5 is a schematic cross-sectional view of the structure of the luminous keyboard in the first preferred embodiment of the present invention.

FIG. 6 is a structural schematic diagram of the light guide plate and light emitting elements of the light emitting keyboard in the first preferred embodiment of the present invention.

Fig. 7 is an exploded schematic diagram of the second preferred embodiment of the luminous keyboard of the present invention.

Fig. 8 is a schematic cross-sectional view of the structure of the luminous keyboard in the second preferred embodiment of the present invention.

Detailed ways

The invention provides a luminous keyboard. Please refer to FIG. 4 and FIG. 5 at the same time. FIG. 4 is an exploded view of the structure of the luminous keyboard in the first preferred embodiment of the present invention, and FIG. 5 is a schematic cross-sectional view of the structure of the luminous keyboard in the first preferred embodiment of the present invention. The luminous keyboard 3 includes a plurality of keys 30, a membrane switch circuit 31, a first light emitting element 32, a second light emitting element 33, a light guide plate 34, a base 35, a main circuit board 36, a light emitting circuit board 37, a third light emitting element 38, and another A light guide plate 39 , a first reflective sheet 40 and a second reflective sheet 41 . Each of the buttons 30 includes a button cap 301 , a button casing 302 and an elastic body 303 . In the light-emitting keyboard 3, the above-mentioned components are arranged in the order of key cap 301, key housing 302, elastic body 303, membrane switch circuit 31, light guide plate 34, first reflection sheet 40, another light guide plate 39 and The second reflection sheet 41 . In this preferred embodiment, the luminous keyboard 3 is a keyboard for a desktop personal computer.

In FIG. 4 and FIG. 5 , the membrane switch circuit 31 is located between the plurality of keys 30 and the light guide plate 34 , and has a plurality of key contacts corresponding to the plurality of keys 30 . The main circuit board 36 is connected to the membrane switch circuit 31 and is located on one side of the membrane switch circuit 31 for providing a power to the membrane switch circuit 31, while the light-emitting circuit board 37 is located on the other side of the membrane switch circuit 31 for setting the first A light-emitting element 32 , a second light-emitting element 33 and a third light-emitting element 38 are provided thereon and another electric power is provided to the first light-emitting element 32 , the second light-emitting element 33 and the third light-emitting element 38 . The base 35 is located under the keys 30 for carrying the keys 30 , the membrane switch circuit 31 , the light guide plate 34 , the first reflection sheet 40 , another light guide plate 39 and the second reflection sheet 41 .

In each key 30 , the key housing 302 is located between the base 35 and the key cap 301 for supporting the key cap 301 , and the elastic body 303 passes through the key housing 302 and is located between the membrane switch circuit 31 and the key cap 301 . When the key cap 301 is pressed, the elastic body 303 is compressed and resists the membrane switch circuit 31 to trigger the key contact, and when the key cap 301 is no longer pressed, the elastic body 303 provides an elastic force to the key cap 301, Reset the button cap 301.

Please refer to FIG. 6 , which is a structural schematic diagram of the light guide plate and light emitting elements of the light emitting keyboard in the first preferred embodiment of the present invention. The first light-emitting element 32 is arranged on the light-emitting circuit board 37 and is located below the plurality of keys 30 to generate the first light beam L1, and the second light-emitting element 33 is arranged on the light-emitting circuit board 37 and is located below the plurality of keys 30 And one side of the first light emitting element 32, adjacent to the first light emitting element 32, is used to generate the second light beam L2. In this preferred embodiment, the first light emitting element 32 and the second light emitting element 33 both emit light diode, and the first light beam L1 is displayed in a first color (such as green), and the second light beam L is displayed in a second color (such as blue). The light guide plate 34 is disposed under the keys 30 and on one side of the first light emitting element 32 , and the light guide plate 34 includes a first light guide area 341 , a second light guide area 342 and an inner laser engraving area 343 . The first light guide area 341 is located on one side of the first light-emitting element 32, and is used to guide the first light beam L1 to be projected to the first key area of the plurality of keys 30 (such as the Tab key, the Cap Lock key, the Shift key and the Ctrl key. constituted area), the second light guide area 342 is located on one side of the second light-emitting element 33, and is used to guide the second light beam L2 to be projected to the second key area of the plurality of keys 30 (for example, it is composed of a plurality of letter keys area). The inner laser engraved area 343 is located between the first light guide area 341 and the second light guide area 342, and is used to isolate the first light beam L1 and the second light beam L2 to prevent the first color from mixing with the second color. In an embodiment, the inner laser engraving area 343 is formed by performing an inner laser engraving technique in the light guide plate 34 .

Please refer to FIG. 5 and FIG. 6 at the same time, the third light-emitting element 38 is located below the first light-emitting element 32 to generate the third light beam L3. In this preferred embodiment, the third light-emitting element 38 is also a light-emitting diode, and The third light beam L3 is displayed in a third color (eg, red). The first reflective sheet 40 is located between the light guide plate 34 and another light guide plate 39 for reflecting the first light beam L1 so that the first light beam L1 enters the light guide plate 34 again, and the first reflective sheet 40 has a plurality of openings 401 , the plurality of openings 401 are located below a key sub-area (for example, the area formed by the W key, the A key, the S key and the D key) in the second key area. The third light beam L3 passes through the plurality of openings 401 so that the third light beam L3 is projected to the key sub-area.

Another light guide plate 39 is disposed under the light guide plate 34 and on one side of the third light emitting element 38 for guiding the third light beam L3 through the opening 401 to be projected onto the second key. Similar to the first reflective sheet 40 , the second reflective sheet 41 is located under the other light guide plate 39 for reflecting the third light beam L3 so that the third light beam L3 enters the other light guide plate 39 again.

Please continue to refer to FIG. 5 and FIG. 6. In the light-emitting keyboard 3, the first light-emitting element 32 generates a first light beam L1 and makes it enter the light guide plate 34. The first light beam L1 is guided through the first light guide area 341, so that the first light beam L1 The light beam L1 is projected onto the first key area, and at this moment, the first key area presents the first color (ie green). Similarly, the second light emitting element 33 generates the second light beam L2 and makes it enter the light guide plate 34, the second light beam L2 is guided through the second light guide area 342, so that the second light beam L2 is projected to the second key area, thus , the second button area presents the second color (ie blue). While the first light guide area 341 and the second light guide area 342 guide the first light beam L1 and the second light beam L2 respectively, the inner laser engraving area 343 located between the first light guide area 341 and the second light guide area 342 The first light beam L1 and the second light beam L2 are isolated to avoid mixing of the first color and the second color. In this way, the user can clearly distinguish the positions of the different keys when operating the light-emitting keyboard 3 in a dark environment.

When the third light beam L3 is generated and enters the other light guide plate 39 , the third light beam L3 is guided by the other light guide plate 39 to pass through the plurality of openings 401 , so that the third light beam L3 is projected to the key sub-area. At this time, the second color originally displayed in the key sub-region is mixed with the third light beam L3, so that the color displayed in the key sub-region is changed from the second color (ie blue) to the fourth color (for example, purple), wherein The fourth color is formed by mixing the second color and the third color. Thereby, the user can identify the key sub-regions (that is, the W key, the A key, the S key and the D key) among the plurality of letter keys that display the second color according to the different colors (that is, the fourth color). The location of the constituting area).

It should be particularly noted that the inner laser engraving area 343 of the light guide plate 34 is formed by using inner laser engraving technology. The laser intensity is less than a damage threshold, so the surface of the light guide plate 34 will not be damaged. And the laser intensity inside the light guide plate 34 is controlled to be greater than the damage threshold, so that the inside of the light guide plate 34 is partially melted and vaporized, thereby generating micron-sized vaporized microcracks inside the light guide plate 34, that is, these The vaporized microcracks constitute the inner laser engraved region 343, and the surface of the light guide plate 34 is not damaged. When the beam is projected onto the inner laser engraving area 343 (that is, the micro crack), the micro crack scatters the beam and cannot pass through it. Therefore, the inner laser engraving area 343 can isolate the first beam L1 and the second beam L2. In summary, the inner laser engraving area 343 is formed inside the light guide plate 34, and the surface of the light guide plate 34 is not damaged, so the light guide plate 34 not only has the effect of isolating light beams, but also has a relatively strong structure and is not easy to break .

In addition, the present invention further provides a second preferred embodiment, please refer to FIG. 7 and FIG. 8 at the same time. FIG. Structural sectional view of the keyboard in the second preferred embodiment. The luminous keyboard 5 includes a plurality of keys 50, a membrane switch circuit 51, a first light-emitting element 52, a second light-emitting element 53, a light guide plate 54, a base 55, a main circuit board 56, a light-emitting circuit board 57, a third light-emitting element 58, and a second light-emitting element 58. Four light emitting elements 59 , another light guide plate 60 , a first reflective sheet 61 and a second reflective sheet 62 . The structure of the luminous keyboard 5 of this preferred embodiment is substantially the same as that of the luminous keyboard 3 of the first preferred embodiment and will not be described again. There are three differences.

First, the key 50 of the light-emitting keyboard 5 of this preferred embodiment includes a key cap 501, a scissors-type connection element 502 and an elastic body 503, and the scissors-type connection element 502 is located between the base 55 and the key cap 501 for connecting the base 55 And the key cap 501 and make the key cap 501 move up and down relative to the base 55, that is, the light-emitting keyboard 5 of this preferred embodiment is a keyboard for a notebook computer. The base 55 has a plurality of base openings 551 for the elastic body 503 to extend in to trigger the membrane switch circuit 51 . Second, the light-emitting keyboard 5 of this preferred embodiment is additionally provided with a fourth light-emitting element 59, which is located on one side of the third light-emitting element 58, adjacent to the third light-emitting element 58, for generating a fourth light beam L4' , and the fourth beam is displayed in the fifth color.

Third, a large number of openings 611 are additionally provided on the first reflective sheet 61 of the luminous keyboard 5 of this preferred embodiment, for example, the one below another key sub-area (such as the Shift key) in the first key area. Hole 611. Fourth, another light guide plate 60 of the luminous keyboard 5 of this preferred embodiment includes a third light guide area 601 , a fourth light guide area 602 and another inner laser engraved area 603 . The third light guide area 601 is located on one side of the third light emitting element 58 for guiding the third light beam to be projected to the first key area of the plurality of keys 50 , and the fourth light guide area 602 is located on one side of the fourth light emitting element 59 , used to guide the fourth light beam to pass through the opening 611 of the first reflective sheet 61 below the Shift key to be projected to another key sub-area of the first key area (ie, the Shift key). Another inner laser engraved area 603 is located between the third light guide area 601 and the fourth light guide area 602 for isolating the third light beam and the fourth light beam to avoid mixing of the third color and the fifth color. Certainly, another inner laser engraving area 603 is formed by performing inner laser engraving technology in another light guide plate 60 .

In the light-emitting keyboard 5, the first light-emitting element 52 generates a first light beam (not shown in the figure) and makes it enter the light guide plate 54, and the first light beam is guided through the first light guide area 341 of the light guide plate 54, so that the first light beam The light beam is projected onto the first key area of the plurality of keys 50, and at this moment, the first key area presents the first color of the first light beam. Similarly, the second light emitting element 53 generates the second light beam L2' and makes it enter the light guide plate 54, and the second light beam L2' is guided through the second light guide area 542 of the light guide plate 54, so that the second light beam L2' is projected To the second key area of the plurality of keys 50, at this time, the second key area presents the second color of the second light beam L2'. While the first light guide area 541 and the second light guide area 542 guide the first light beam and the second light beam L2' respectively, the inner laser engraving area 543 located between the first light guide area 541 and the second light guide area 542 The first light beam and the second light beam L2' are isolated from mixing of the first color and the second color.

When the third light emitting element 58 generates a third light beam (not shown in the figure), the third light beam enters another light guide plate 60, and the third light beam is guided by the third light guide area 601 of the other light guide plate 60 to pass through the first light guide plate 60. A plurality of openings 611 of a reflective sheet 61 enable the third light beam to be projected to key sub-areas in the second key area. At this time, the second color originally displayed in the sub-area of the key is mixed with the third light beam, so that the color displayed in the sub-area of the key is changed from the second color to the fourth color, wherein the fourth color is formed by the second color and the third color. Formed by mixing colors. Similarly, when the fourth light emitting element 59 generates the fourth light beam L4' displayed in the fifth color, the fourth light beam L4' enters another light guide plate 60, and the fourth light beam L4' is guided by the fourth light guide plate 60 of the other light guide plate 60. The light area 602 is guided through the plurality of openings 611 of the first reflection sheet 61 , so that the fourth light beam L4 ′ is projected to another key sub-area (namely the Shift key) in the first key area. At this time, the first color originally displayed by another key sub-region is mixed with the fourth light beam L4', so that the color displayed by this other key sub-region is changed from the first color to the sixth color, wherein the sixth color is formed by It is formed by mixing the first color and the fifth color. Of course, another inner laser engraving area 603 in another light guide plate 60 can isolate the third light beam and the fourth light beam L4' to prevent the two from mixing with each other.

According to the above two preferred embodiments, it can be seen that the luminous keyboard of the present invention can display multiple colors, so that users can identify different key areas by visually identifying different colors, and can also display different key areas through the key sub-areas. The color enables the user to identify the position of the specific key sub-region, and the setting of each light-emitting element is more convenient. Furthermore, in order to avoid the mixing of beams of multiple colors, the light-emitting keyboard of the present invention is provided with an inner laser engraving area in the light guide plate to block the passage of beams, so that the mixing of beams of multiple colors can be avoided, and the inner laser engraving area is the inner laser engraving area. The laser engraving technology is formed inside the light guide plate without damaging the surface of the light guide plate, so the light guide plate has a relatively strong structure, making the light-emitting keyboard of the present invention not easy to break.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the scope of the claims of the present invention. Therefore, all other equivalent changes or modifications that do not deviate from the spirit disclosed in the present invention should be included in this disclosure. within the scope of the invention.

Claims (11)

1. an illuminated keyboard is characterized in that, comprising:

A plurality of buttons;

The first light-emitting component is arranged at the below of these a plurality of buttons, in order to produce the first light beam;

The second light-emitting component is arranged at the below of these a plurality of buttons and adjacent to this first light-emitting component, in order to produce the second light beam; And

Light guide plate, be arranged at the below of these a plurality of buttons and be positioned at a side of this first light-emitting component, and this light guide plate comprises the first leaded light zone, the second leaded light zone and inner laser carving area, this the first leaded light zone is positioned at this side of this first light-emitting component, is projected to the first key area of these a plurality of buttons in order to guide this first light beam; This second leaded light zone is positioned at a side of this second light-emitting component, is projected to the second key area of these a plurality of buttons in order to guide this second light beam; This inner laser carving area is between this first leaded light zone and this second leaded light zone, in order to isolate this first light beam and this second light beam.

2. illuminated keyboard as claimed in claim 1 is characterized in that, this first light-emitting component and this second light-emitting component are light-emitting diode, and this first light beam is to show with the first color, and this second light beam is to show with the second color.

3. illuminated keyboard as claimed in claim 1 is characterized in that, also comprises:

Film switch circuit between these a plurality of buttons and this light guide plate, and has a plurality of press-button contacts corresponding to these a plurality of buttons;

Main circuit board is connected in this film switch circuit and is positioned at a side of this film beginning circuit, gives this film switch circuit in order to an electric power to be provided;

Luminous circuit board is positioned at the opposite side of this film switch circuit, in order to this first light-emitting component and this second light-emitting component to be set thereon and to provide another electric power to give this first light-emitting component and this second light-emitting component; And

Base is positioned at the below of these a plurality of buttons, in order to these a plurality of buttons of carrying.

4. illuminated keyboard as claimed in claim 3 is characterized in that, these a plurality of buttons respectively comprise:

Button cap;

Scissor Connection Element is between this base and this button cap, in order to connect this base and this button cap and this button cap is moved up and down with respect to this base; And

Elastomer, between this film switch circuit and this button cap, when this button cap was touched, this elastomer was compressed and support this film switch circuit, to trigger this press-button contact; And when this button cap was no longer touched, this elastomer provided elastic force to give this button cap, and this button cap is resetted.

5. illuminated keyboard as claimed in claim 3 is characterized in that, these a plurality of buttons respectively comprise:

Button cap;

The button housing is between this base and this button cap, in order to carry this button cap; And

Elastomer passes this button housing and between this film switch circuit and this button cap, and when this button cap was touched, this elastomer was compressed and support this film switch circuit, to trigger this press-button contact; And when this button cap was no longer touched, this elastomer provided elastic force to give this button cap, and this button cap is resetted.

6. illuminated keyboard as claimed in claim 1 is characterized in that, also comprises:

The 3rd light-emitting component is positioned at the below of this first light-emitting component, in order to produce the 3rd light beam; And

Another light guide plate is arranged at the below of this light guide plate and is positioned at a side of the 3rd light-emitting component, is projected to a button subregion in this second key area in order to guide the 3rd light beam.

7. illuminated keyboard as claimed in claim 6 is characterized in that, the 3rd light-emitting component is arranged on the luminous circuit board, and the 3rd light-emitting component is light-emitting diode, and the 3rd light beam is to show with the 3rd color; When the 3rd light beam was projected on this button subregion, this button subregion showed the 4th color that is formed by this second color and the 3rd blend of colors by showing that one second color changes to.

8. illuminated keyboard as claimed in claim 7 is characterized in that, also comprises the second reflector plate, and this second reflector plate is positioned at the below of this another light guide plate, makes the 3rd light beam again enter this another light guide plate in order to reflect the 3rd light beam.

9. illuminated keyboard as claimed in claim 6, it is characterized in that, also comprise the first reflector plate, this first reflector plate is between this light guide plate and this another light guide plate, make this first light beam again enter this light guide plate in order to reflect this first light beam, and this first reflector plate has at least one perforate, and this at least one perforate is positioned at the below of this button subregion, with so that the 3rd light beam passes this at least one perforate and make the 3rd light beam be projected to this button subregion.

10. illuminated keyboard as claimed in claim 6 is characterized in that, also comprises the 4th light-emitting component, and the 4th light-emitting component is adjacent to the 3rd light-emitting component, and in order to producing the 4th light beam, and this another light guide plate comprises:

The 3rd leaded light is regional, is positioned at this side of the 3rd light-emitting component, is projected to this first key area of these a plurality of buttons in order to guide the 3rd light beam;

The 4th leaded light is regional, is positioned at a side of the 4th light-emitting component, is projected to another button subregion of this first key area in order to guide the 4th light beam; And

Another inner laser carving area is between the 3rd leaded light zone and the 4th leaded light zone, in order to isolate the 3rd light beam and the 4th light beam.

11. illuminated keyboard as claimed in claim 1 is characterized in that, this inner laser carving area is to carry out the inner laser engraving technology and form in this light guide plate.

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