TWM581288U - Mask structure applicable to luminous keyboard - Google Patents

Abstract

The present invention provides a mask structure for an illuminated keyboard, which is disposed in a backlight module of an illuminated keyboard, and includes a diffused reflective sheet body and a light shielding layer. The diffusing reflection sheet body is a film-like structure and has a plurality of perforations for the passage of the key of the plurality of keycaps. The light shielding layer is coated on the upper surface of the diffusing reflection sheet body, and the light shielding layer is interposed with the edges of the perforations to form a white space, wherein the white space has a light transmitting property to form a uniform bright circle around the key cap. Thereby, the uniform bright circle can effectively eliminate the hot spot phenomenon caused by the large-angle light leakage of the key caps of the illuminated keyboard during illumination, and greatly improve the aesthetic appearance and the light taste of the keyboard.

Description

Mask structure applied to an illuminated keyboard

This creation is related to the field of illuminated keyboard components, and in particular to a mask structure applied to an illuminated keyboard.

With the development and advancement of technology, computers have become an indispensable electronic product in today's life. Whether it is a desktop computer or a portable notebook computer, it needs to be controlled through input devices such as a mouse keyboard. In view of the current changes in people's habits, it is more and more often used in a dim environment to use computer devices. This is especially true for notebook computers with portable features. However, in a dimly lit environment, the lack of light is often caused by the inability to recognize keyboard characters, thereby reducing the user's ease of use.

In order to solve the above phenomenon, the related industry has proposed a keyboard combining the illuminating function, so that the keyboard itself can emit light and enhance the recognition viewing performance under the use of a dim environment. The conventional illuminated keyboard provides light through the light-emitting module disposed in the keyboard, so that the characters on each button are illuminated. However, at present, the actual product suffers from the problem of poor uniformity of light emission. Since various structures in the illuminated keyboard may affect the light output, the buttons may cause problems such as excessive brightness and excessive darkness of the local area, and then This causes problems with reduced optical taste and unsuitable for user identification.

In view of this, the creator gathers relevant technical experience and proposes a mask structure applied to the illuminated keyboard, and hopes to solve the problem that the aforementioned button light taste is insufficient.

One of the aims of the present invention is to provide a mask structure for an illuminated keyboard, which can greatly enhance the light-emitting performance, thereby improving the light-emitting taste of the illuminated keyboard.

In order to achieve the above object, the present invention discloses a mask structure applied to an illuminated keyboard for providing a backlight module disposed in a light-emitting keyboard, comprising: a diffused reflective sheet body, which is a film-like structure. And a plurality of perforations, the plurality of perforations being passed through the key of the plurality of keycaps; and a light shielding layer applied to the upper surface of the diffusing reflection sheet body, and the light shielding layer is interposed with the edge of each of the perforations a white area, wherein the white area has a light transmitting property to form a uniform bright circle around the keycap. Thereby, through the mask structure, the hot spot phenomenon caused by the large-angle light leakage generated when the button light is emitted can be improved, and the light-emitting keyboard is uniformly and beautifully colored.

In another embodiment, the present disclosure discloses that each of the white areas is in a box shape, and each of the blank areas has a frame width of 0.85 mm to 1.15 mm, thereby providing better light guiding performance. The uniformity of the aperture formed when the light is transmitted through the mask structure is further improved.

Based on the foregoing embodiment, in another embodiment, the width of the border of each of the white areas is preferably 1 mm to provide an optimal light-emitting effect.

Moreover, in a preferred embodiment, the diffusing reflection sheet body is a white reflection sheet and has a thickness of 0.02 to 0.05 mm. In this way, it has better light transmission efficiency and makes the brightness of the aperture more uniform.

Further, in an embodiment, the light shielding layer is a black ink coating to prevent light from escaping in an unintended area, thereby affecting light output performance.

The mask structure of the foregoing embodiments can be combined with other components to form a backlight module for an illuminated keyboard. In one embodiment, a backlight module for an illuminated keyboard is provided for providing a plurality of key caps. The bottom side comprises: a mask structure comprising a diffusing reflection sheet body and a light shielding layer, the diffusion type reflection sheet body being a film-like structure and having a plurality of perforations, the plurality of perforations for the plurality of keycap keys Passing, the light shielding layer is applied to the upper surface of the diffusing reflection sheet body, and the light shielding layer and the edge of each of the perforations are interposed to form a blank area, wherein the white area has a light transmitting property; a light guide plate is disposed on a bottom side of the mask structure, and the light guide plate has a plurality of openings and a plurality of first holes, the first holes are corresponding to the position of the key cap; and the plurality of light sources are correspondingly open The holes are arranged to provide side-in-light to the light guide plate; thereby, when the light of the light source is guided through the light guide plate to the mask structure, a uniform bright circle can be formed around the key cap through the mask structure, thereby eliminating bright The phenomenon of uneven hot spots.

In another embodiment, in the embodiment, the blank area can be in the shape of a square, and the width of the border of each of the blank areas is between 0.85 mm and 1.15 mm. This system can have better light guiding performance, and the uniformity of the aperture formed when light is transmitted through the mask structure is further improved.

Preferably, in another embodiment, the width of the border of each of the white areas is preferably 1 mm to provide an optimum light-emitting effect.

In addition, in one embodiment, the diffusing reflection sheet body is a white reflection sheet and has a thickness of 0.02 to 0.05 mm. Thereby, the diffusing reflection sheet body can be provided with better light transmission efficiency and the brightness of the aperture is more uniform.

Further, in an embodiment, the light shielding layer is a black ink coating to prevent light from escaping in an unintended area, thereby affecting light output performance.

Preferably, in one embodiment, the sizes of the perforations are larger than the first holes, thereby providing better light-emitting effects in addition to the key cap arrangement.

In addition, in order to make the light of the light guide plate more uniform, in one embodiment, the openings are located in a central region of the light guide plate, and at least one of the light source sources emits light toward a short side of the light guide plate.

Or in another embodiment, the openings are located in a central region of the light guide plate, and the light guide plate has two opposite short sides, at least one of the light source sources emitting light toward any of the short sides, at least one The illumination source emits light toward the other short side, thereby achieving better light use.

According to the previous embodiment, in still another embodiment, at least one of the light source sources may be illuminated toward a long side of the light guide plate, and the long sides and the short sides are perpendicular to each other. In order to allow sufficient light reception in each area of the light guide plate to project uniform light to the mask structure.

In summary, the mask structure applied to the illuminated keyboard is a white space that is transparent and has a light diffusing effect, so that the light that is lighted by the mask structure and bounced by the key cap can be eliminated. A uniform bright circle is formed to solve the problem of uneven brightness and darkness caused by large-angle light leakage, and the light-emitting performance of the illuminated keyboard is improved. Furthermore, in order to make the uniform bright circle better, the width of the border of each blank area can be set, and the suitable diffusing reflector body material and the light shielding layer material can be selected to make the mask structure play more. Good light processing performance. At the same time, the backlight module using the mask structure can effectively improve the overall light-emitting effect and efficiency by reducing the light-emitting and glare light-reducing visual performance by setting the blank area.

As described above, in order to improve the lack of light of the keys of the illuminated keyboard, and to improve the luminous performance of the keys on the illuminated keyboard, the present author proposes a technical means for improving the design of the mask structure applied to the keyboard to transmit the mask. The structure further enhances the luminous efficacy of each button. Please refer to FIG. 1 to FIG. 5 , which are schematic diagrams of a mask structure, a cross-sectional view of a mask structure, a schematic diagram of a mask structure and a key cap application, and an exploded view of a light guide plate and a light source. And an application diagram of forming a uniform bright circle around the keycap. The present invention proposes a mask structure 1 for an illuminated keyboard, which is disposed in a backlight module 2 of an illuminated keyboard. The mask structure 1 includes a diffused reflective sheet body 10 and a light shielding layer 11 and a backlight. The description of module 2 is detailed later.

The diffusing reflection sheet body 10 is a film-like structure and has a plurality of perforations 101 through which the key pins 30 of the plurality of keycaps 3 pass. The light shielding layer 11 is coated on the upper surface of the diffusing reflection sheet body 1, and the light shielding layer 11 and the edge of each of the perforations 10 are interposed to form a white space 12, wherein the white space 12 has a light transmitting property to form a uniform bright The circle A is surrounded by the keycap 3, as shown in Fig. 5. The uniform bright circle A size shown in Fig. 5 does not indicate the actual size, which is a better illustration. Thereby, when the light passes through the mask structure 1 and passes through the through hole 101 to provide light to the respective key caps 3, the respective white areas A having light transmissive properties are utilized, and the diffusion and light transmission characteristics are transmitted around the key caps 3. The uniform bright circle A is formed to eliminate the uneven phenomenon of light and dark caused by the large-angle light leakage when the light is emitted from the perforation 101, and the structure of the light shielding layer 11 can prevent the light from forming light from the unintended area, thereby affecting the light performance and causing Loss of light energy.

In particular, the reason why the mask structure 1 is formed into a uniform bright ring A effect is that the diffusing type reflecting sheet body 10 is a film-like structure and has a light transmitting property, and the properties of the diffusing type reflecting sheet can be covered. When the cover structure 1 to the key cap 3 finally forms a light, the bright spot which is rebounded by the key cap 3 is scattered. Therefore, after receiving the light, the mask structure 1 can form the uniform bright circle A around the keycap 3 through the white space 12 . In the present embodiment, the diffusing reflection sheet body 10 of the mask structure 1 is preferably a white reflection sheet having a thickness of 0.02 to 0.05 mm, so as to have diffused light and light transmission efficiency, so that the aperture is more uniformly formed. Beautiful. Wherein, the practical application, a diffusion type reflection sheet 10 may be selected SW83G body model of the company SKC ^® white reflective sheet, and coated on the surface layer 11 to form the light shielding mask of the creation of a structure. The thicknesses of the light shielding layer 11 and the diffusing reflection sheet body 10 shown in FIGS. 2 and 3 are only for the purpose of illustration, and the thickness of the actual light shielding layer 11 and the diffusion type reflection sheet body 10 is extremely thin. .

In addition, preferably, each of the white areas 12 has a square shape, and the border width D of each of the white areas 12 is between 0.85 mm and 1.15 mm, so that the side glare can be better improved, and the key cap is improved. A uniform bright circle A is formed around 3 weeks. In the present embodiment, the frame width D of each of the blank areas 12 is preferably 1 mm as an example, and the light-emitting effect such as brightness and uniformity of the uniform aperture A is taken into consideration.

In order to enable the light shielding layer 11 to achieve the effect of shielding light, a dark ink may be applied to the diffusing reflection sheet body 10 to form a light shielding layer 11, and the dark ink may be, for example, black, gray or brown ink. In the present embodiment, the blackout layer 11 is taken as a black ink coating, but the creation is not limited thereto.

In a specific application, the backlight module 2 disposed in the mask structure 1 further includes a light guide plate 20 and a plurality of light source 21, as shown in FIG. 4 . The specific features of the mask structure 1 include the diffusing reflection sheet body 10 and the light shielding layer 11 as described in the preceding paragraphs. The diffusion type reflection sheet body 10 has a plurality of through holes 101 for the key 30 of the keycap 3 to pass through. The layer 11 is coated on the upper surface of the diffusing reflection sheet body 10, so that the light shielding layer 11 and the edge of the through hole 101 are interposed to form the white space 12, and the white space 12 has a light transmitting property to form a uniform bright circle on the key cap 3. All around. The light guide plate 20 is disposed on the bottom side of the mask structure 1 and has a plurality of openings 201 and a plurality of first holes 202. The first holes 201 are disposed corresponding to the position of the key cap 3. The light source 21 is disposed corresponding to the opening 201 to provide the side-entry light to the light guide plate 20, so that when the light of the light source 21 is guided and guided to the mask structure 1 through the light guide plate 20, the mask structure 1 can be effectively used. The light spot formed by the reflection of the keycap 3 is scattered, and a uniform bright circle A is formed around the key cap 3, thereby effectively eliminating the uneven phenomenon of light and dark caused by large-angle light leakage.

Similarly, when the mask structure 1 is applied to the backlight module 2, the blank areas 12 may be in a square shape, and the border width D of each of the white areas 12 is between 0.85 mm and 1.15 mm. Preferably, the width D of the border of the blank area 12 can be about 1 mm, so that when the light is emitted from the keycap 3, a uniform bright circle A can be formed on the periphery of the keycap 3.

Structure-based diffusion mask 10 and the reflection-type sheet body 1 can be selected as a white reflective sheet, and a thickness of 0.02 ~ 0.05mm, more conducive to diffusion type reflection sheet main body 10 is formed so that the light to be scattered aperture, for example, the choice of the company SKC ^® White reflector of the SW83G model. The light-shielding layer 11 can be a black ink coating to provide a better light-shielding effect. Of course, in addition to the black ink, a dark ink such as gray or brown ink can also be used.

In order to facilitate the mounting of the keycap 3 and to provide better light-emitting performance, preferably, each of the perforations 101 on the diffusing reflector body 10 is larger than the first hole 202 on the light guide plate 20, and is corresponding to the light guide plate 20. The position of each of the key caps 3 is further provided with a plurality of second holes 203 for the key members 30 of the keycap 3 and the buckle assembly of the illuminated keyboard to pass through the keys of the through holes 101. The cap 3 key 30 is fixed to the buckle assembly, and the second holes 203 are, for example, elongated perforations or small holes corresponding to the size of each of the snap components. Thereby, the perforation 101 having a larger size allows the keycap 3 to pass through and is aligned with the light guide plate 20 under the mask structure 1. However, the technical contents such as the combination of the aforementioned snap components and the key pins are already existing technologies in the field of illuminated keyboards, and thus will not be described herein.

In addition, in order to make the light energy received by each region of the light guide plate 20 more equal, the problem of uneven brightness and darkness when the light is emitted from the light guide plate 20 is avoided, and the light guide plate 20, the light source 21, and the like can be used to adjust the conditions. The opening 201 is located in a central region of the light guide plate 20, and at least one of the illumination sources 21a is illuminated toward the short side 204 of the light guide plate 20. Or the light guide plate 20 has two opposite short sides 204, at least one light source 21a emits light toward any short side 204, and at least one light source 21b provides side light incident to the other short side 204. Light board 20. In the case that the illumination sources 21a, 21b are illuminated toward the two short sides 204, the at least one illumination source 21c may be further illuminated toward the long side 205 of the light guide plate 20, wherein the long sides 205 are perpendicular to the short sides 204. To improve the uniformity of light energy received by each region of the light guide plate 20.

In summary, the mask structure applied to the illuminated keyboard is a white space that is transparent and has a light diffusing effect, so that the light that is lighted by the mask structure and bounced by the key cap can be eliminated. A uniform bright circle is formed to solve the problem of uneven brightness and darkness caused by large-angle light leakage, and the light-emitting performance of the illuminated keyboard is improved. Different from the previous solution to solve the problem of uneven light emission of the keycap, the present invention does not use a film such as shielding the gap of the light guide plate, forming the light guide plate to form a tapered hole, additionally providing a dielectric layer or a plurality of films with different effects, or intentionally shielding the opening. Part of the side is very complicated and difficult to produce adjustment means, but through the white space reserved in the mask structure, to adjust the optical performance by the characteristics of the white space, to solve the problem of large angle leakage, side glare, etc. Light out. Furthermore, in order to make the uniform bright circle better, the width of the border of each blank area can be set, and the suitable diffusing reflector body material and the light shielding layer material can be selected to make the mask structure play more. Good light processing performance. At the same time, the backlight module using the mask structure can effectively improve the overall light-emitting effect and efficiency by reducing the light-emitting and glare light-reducing visual performance by setting the blank area.

1‧‧‧mask structure  10‧‧‧Diffuse reflective sheet body  101‧‧‧Perforation  11‧‧‧Lighting layer  12‧‧‧White Area  2‧‧‧Backlight module  20‧‧‧Light guide  201‧‧‧Opening  202‧‧‧ first hole  203‧‧‧Second hole  204‧‧‧ Short side  205‧‧‧ long side  21‧‧‧Light source  21a‧‧‧Light source  21b‧‧‧Light source  21c‧‧‧Light source  3‧‧‧Key Cap  30‧‧‧key feet  A‧‧‧ even bright circles  D‧‧‧Border width  

FIG. 1 is a schematic view showing the structure of a mask according to a preferred embodiment of the present invention.  Figure 2 is a cross-sectional view showing the mask structure of the preferred embodiment of the present invention.  FIG. 3 is a schematic view showing the application of the mask structure and the key cap of the preferred embodiment of the present invention.  FIG. 4 is a schematic exploded view of the mask structure with the light guide plate and the light source according to the preferred embodiment of the present invention.  Fig. 5 is a schematic view showing the application of a preferred embodiment of the present invention to form a uniform bright circle around the keycap.  

Claims (5)

A mask structure applied to an illuminated keyboard, which is disposed in one of the backlight modules of the illuminated keyboard, and includes:  a diffusion-type reflective sheet body, which is a film-like structure and has a plurality of perforations, the plurality of perforations being passed through a plurality of keycaps; and  a light shielding layer is applied on the upper surface of the diffusing reflection sheet body, and the light shielding layer is interposed with the edge of each of the perforations to form a blank area, wherein the white area has a light transmitting property to form A uniform bright circle around the keycap.   The mask structure applied to the illuminated keyboard according to claim 1, wherein each of the white areas has a square shape, and a width of each of the blank areas is between 0.85 mm and 1.15 mm. The mask structure applied to the illuminated keyboard according to the second aspect of the invention, wherein the border width of each of the white areas is preferably 1 mm. The mask structure applied to the illuminated keyboard according to the first aspect of the invention, wherein the diffusing reflective sheet body is a white reflective sheet and has a thickness of 0.02 to 0.05 mm. The mask structure for an illuminated keyboard according to claim 1, wherein the light shielding layer is a black ink coating.