TWM625541U - Colorful backlight module of luminous keyboard - Google Patents

Abstract

A color backlight module of a light-emitting keyboard, comprising: a light guide plate, a color reflection sheet and a light source, the color reflection sheet includes a reflection sheet body and a colored light which is photocurable ink and formed on the reflection sheet body a conversion layer, so that the light provided from the light source to the light guide plate and emitted from the bottom surface of the light guide plate to the color reflective sheet is converted into colored light with a specific color after passing through the colored light conversion layer, and the reflective sheet reflection of the body to illuminate the keyboard module.

Description

Color Backlight Module for Luminous Keyboard

This creation is related to a light-emitting keyboard, especially to a color backlight module of the light-emitting keyboard.

The light-emitting keyboard is a keyboard with a backlight module under the keyboard module, and the backlight module provides light to make the keys or the surface of the keyboard glow. Traditional illuminated keyboards are generally white, or use colored LEDs to make them appear different colors. However, LEDs have limited color options, and some specific colors are difficult to obtain and require additional customized production. In addition, if the light-emitting keyboard can emit light of multiple colors at the same time, a large number of LEDs of different colors must be used, which increases the difficulty in the LED configuration of the backlight module, and makes it difficult to flexibly change the design.

Therefore, the purpose of the present invention is to provide a color backlight module for a light-emitting keyboard, which is easy to manufacture and easy to design flexibly.

The technical means adopted in this creation to solve the problems of the prior art is to provide a color backlight module for a light-emitting keyboard, comprising: a light guide plate disposed under a keyboard module of the light-emitting keyboard; a color reflective sheet disposed Under the light guide plate, the color reflective sheet includes a reflective sheet body and a colored light conversion layer, the colored light conversion layer is a photocurable ink and is formed on the upper surface of the reflective sheet body; and a light source, provided corresponding to The light guide plate is used to provide light to the light guide plate, wherein the light provided from the light source to the light guide plate and emitted from the bottom surface of the light guide plate to the color reflective sheet is converted into a color reflective sheet after passing through the colored light conversion layer. The color light of a specific color is irradiated to the keyboard module by the reflection of the reflection sheet.

In an embodiment of the present invention, a color backlight module of a light-emitting keyboard is provided, wherein the light-curable ink is UV-curable ink.

In an embodiment of the present invention, a color backlight module of a light-emitting keyboard is provided, wherein the photocurable ink is made of photocurable resin.

In an embodiment of the present invention, a color backlight module for a light-emitting keyboard is provided, wherein the colored light conversion layer includes a total of two or more colored light conversion blocks of different colors.

In an embodiment of the present invention, a color backlight module of a light-emitting keyboard is provided, wherein the light source is a white light-emitting diode.

In an embodiment of the present invention, a color backlight module for a light-emitting keyboard is provided, wherein the light source is a colored light-emitting diode, which provides light other than white light.

An embodiment of the present invention provides a color backlight module for a light-emitting keyboard, wherein the keyboard module includes a support plate and a key cap, the support plate is disposed on the light guide plate, and the key cap is disposed on the light guide plate. On the support plate, the keycap has a keycap light-transmitting portion, the support plate has a support plate light-transmitting portion corresponding to the keycap light-transmitting portion, wherein the colored light conversion layer of the color reflective sheet is located at the Just below the light-transmitting part of the support plate.

In an embodiment of the present invention, a color backlight module for a light-emitting keyboard is provided, further comprising a light shielding sheet disposed on the light guide plate for shielding stray light.

In an embodiment of the present invention, a color backlight module for a light-emitting keyboard is provided, wherein the colored light conversion layer is formed on the upper surface of the reflective sheet by digital inkjet.

In an embodiment of the present invention, a color backlight module for a light-emitting keyboard is provided, wherein the colored light conversion layer includes a total of two or more colored light conversion blocks of different colors, and there are a plurality of the colored light conversion areas of different colors. The blocks are formed in the same batch of light conversion blocks, and all the formed light conversion blocks in the same batch are formed on the upper surface of the reflection sheet in the same digital inkjet process.

Through the technical means adopted in this creation, the color backlight module of the light-emitting keyboard can utilize the design of the colored light conversion layer of the color reflective sheet to provide the converted color light with a specific color to the keyboard module, and The luminous performance of the luminous keyboard does not need to be completely determined by the luminous color of the light source. Thereby, the production and manufacture of the color backlight module of the light-emitting keyboard of the present invention is not limited by the selection of light sources and the number of configurations, and can be easily manufactured and easily designed flexibly. In addition, the present invention uses a photocurable resin to form the colored light conversion layer, which has better weather resistance and is not easy to fade, so that the color conversion performance of the colored light conversion layer of the color reflective sheet can be maintained for a long time.

Embodiments of the present invention will be described below with reference to FIGS. 1 to 5 . This description is not intended to limit the implementation of the present creation, but is one of the embodiments of the present creation.

As shown in FIGS. 1 to 3 , a color backlight module 100 for an illuminated keyboard according to an embodiment of the present invention includes: a light guide plate 1 , a color reflection sheet 2 and a light source 3 .

As shown in FIG. 1 to FIG. 3 , the light guide plate 1 is disposed under a keyboard module K of the light-emitting keyboard.

Specifically, the light guide plate 1 is used to enable the light L from the light source 3 to form a total internal reflection, so as to uniformly transmit the light L to all parts of the light guide plate 1, and then utilize the diffusion point pattern on the surface of the light guide plate 1. The light is guided so that the light L is emitted from the light guide plate 1 .

As shown in FIGS. 1 to 3 , the color reflective sheet 2 is disposed under the light guide plate 1 , and the color reflective sheet 2 includes a reflective sheet body 20 and a colored light conversion layer 21 . The colored light conversion layer 21 It is photocurable ink and is formed on the upper surface 201 of the reflective sheet body 20 .

Specifically, the reflection sheet 20 is used to reflect the light emitted from the bottom surface of the light guide plate 1 back into the light guide plate 1 , so that the reflected light is irradiated to the keyboard module K through the light guide plate 1 . .

In this embodiment, the colored light conversion layer 21 is formed on a local area of the upper surface 201 of the reflective sheet body 20, but the invention is not limited to this. In other embodiments, as shown in FIG. 4 For the color backlight module 100a, the colored light conversion layer 21 can also be formed on the entire range of the upper surface 201 of the reflective sheet body 20 .

Furthermore, the photocurable ink refers to the ink that will be cured when irradiated with light of a specific wavelength and intensity. In a preferred embodiment of the present invention, the light-curable ink is UV-curable ink, and the light-curable ink is made of light-curable resin. In other words, the photo-curable ink is a UV-curable ink that is cured under the irradiation of ultraviolet light of a specific wavelength and intensity, and is also a photo-curable resin material. It is a liquid resin when it is not irradiated by ultraviolet light. is solidified. Compared with the traditional printing ink, the photocurable ink has better weather resistance and is not easy to fade, so that the color conversion performance of the colored light conversion layer 21 of the color reflective sheet 2 can be maintained for a long time.

As shown in FIGS. 1 to 3, the light source 3 is disposed corresponding to the light guide plate 1 to provide light L to the light guide plate 1, wherein the light source 3 is provided to the light guide plate 1 and from the light guide plate 1 The light L emitted from the bottom surface of the color reflective sheet 2 is converted into colored light with a specific color after passing through the colored light conversion layer 21 , and is reflected to the keyboard module K by the reflection of the reflective sheet 20 .

Specifically, the light L incident on the light guide plate 1 from the light source 3 will form a total reflection inside the light guide plate 1, and the light will be guided through the diffusing point pattern on the surface of the light guide plate 1, so that the light L will pass from the light guide plate 1. 1 shoots out. According to the design of the diffusion point pattern of the light guide plate 1 , the light L can be emitted from the bottom surface of the light guide plate 1 to the color reflection sheet 2 , and then irradiated to the keyboard module K by the reflection of the color reflection sheet 2 ; It is also possible that part of the light L is irradiated to the keyboard module K by the reflection of the color reflective sheet 2 , and part of it is directly emitted to the keyboard module K from the top surface of the light guide plate 1 . In the process of exiting from the bottom surface of the light guide plate 1 to the color reflective sheet 2 and then being reflected by the reflective sheet body 20 of the color reflective sheet 2 to the light guide plate 1, the light L travels through the color reflective sheet 2. When the colored light conversion layer 21 is used, the colored light with a specific color will be converted by the colored light conversion layer 21, so that the light finally irradiated to the keyboard module K has a specific color. Therefore, even if the light source 3 of other light emission colors is not changed, light with different light emission performances can be obtained.

As shown in FIG. 2 , according to the color backlight module 100 of the light-emitting keyboard according to the embodiment of the present invention, the colored light conversion layer 21 includes a total of two or more colored light conversion blocks 211 of different colors. The colored light conversion blocks 211 of two or more different colors can be arbitrarily distributed on the reflective sheet 20 , for example, distributed corresponding to the positions of different keys. Of course, the present invention is not limited to this, and the colored light conversion layer 21 may only include the colored light conversion block 211 of a single color.

As shown in FIG. 1, FIG. 3 to FIG. 5, according to the color backlight modules 100, 100a, 100b of the light-emitting keyboard according to the embodiments of the present invention, the light source 3 can be a white light emitting diode, or the light source 3 can be colored light-emitting diodes to provide light other than white light. Furthermore, although only one light source 3 is shown in the embodiment, the present invention is not limited to this. The light sources 3 can be plural, and the plural light sources 3 can be respectively light sources providing light of different colors.

As shown in FIG. 3, according to the color backlight module 100 of the light-emitting keyboard according to the embodiment of the present invention, the keyboard module K includes a support plate K1, a keycap K2 and a connecting mechanism K3, and the support plate K1 is disposed on the On the light guide plate 1, the keycap K2 is disposed on the support plate K1 via the connecting mechanism K3, so that the keycap K2 can move up and down relative to the support plate K1, and the keycap K2 has a keycap transparent The light portion K21, the support plate K1 has a support plate light-transmitting portion K11 corresponding to the keycap light-transmitting portion K21, so that the colored light reflected by the color reflective sheet 2 and converted into a specific color passes through the support plate. The light portion K11 is irradiated to the light-transmitting portion K21 of the keycap correspondingly, thereby causing the keys to emit light. Preferably, the colored light conversion layer 21 of the color reflective sheet 2 is located directly under the light-transmitting portion K11 of the supporting plate, so as to more effectively make the light L reflected by the color reflective sheet 2 and converted into a The color light of a specific color is then irradiated to the light-transmitting portion K21 of the keycap accordingly.

As shown in FIG. 3 , the color backlight module 100 of the light-emitting keyboard according to the embodiment of the present invention further includes a light shielding sheet 4 disposed on the light guide plate 1 for shielding stray light. Specifically, the light-shielding sheet 4 includes a light-shielding region 41 through which light cannot penetrate and a light-transmitting region 42 through which light can penetrate. Preferably, the position of the light-transmitting area 42 corresponds to the light-transmitting portion K11 of the supporting plate, so that the color light reflected from the color reflective sheet 2 and converted into a specific color is transmitted through the light-transmitting area 42 and thus passes through the light-transmitting area 42 . The light-transmitting portion K11 of the support plate corresponds to the light-transmitting portion K21 of the keycap. The light-shielding area 41 is arranged outside the light-transmitting area 42 to shield stray light from other positions and angles to reduce interference.

In addition, according to the colored backlight modules 100, 100, 100a of the light-emitting keyboard according to the embodiments of the present invention, the colored light conversion layer 21 is preferably formed on the upper surface 201 of the reflective sheet body 20 by means of digital inkjet. Digital inkjet is a printing that differs from traditional printing (ie, analog printing of lithography, flexography, gravure, letterpress, etc.) Way. The biggest difference from analog printing is that digital inkjet printing does not need to change the printing plate, but can speed up the printing time and reduce the cost. Moreover, with the computer graphics function, the output result of digital inkjet can be changed quickly, flexibly and at low cost, so that the layout of the colored light conversion layer 21 on the color reflective sheet 2 can be easily customized.

Preferably, as shown in FIG. 2, a plurality of the colored light conversion blocks 211 with different colors are mutually formed light conversion blocks in the same batch, and all the formed light conversion blocks in the same batch are in the same batch. It is formed on the upper surface 201 of the reflective sheet body 20 in the same digital inkjet process. Specifically, the traditional ink printing method requires multiple printings depending on the color to form light conversion blocks of multiple colors on the same surface, while the digital inkjet method can form multiple colors at one time. In this way, the colored light conversion block 211 with a layout of multiple colors can be formed on the reflective sheet body 20 quickly and flexibly. In addition, in this embodiment, a plurality of the colored light conversion blocks 211 are formed on a local area of the upper surface 201 of the reflective sheet body 20 at intervals, but the present invention is not limited to this, and in other embodiments Among them, as shown in the color backlight module 100b shown in FIG. 5 , a plurality of the colored light conversion blocks 211 can also be connected to each other and formed on the entire range of the upper surface 201 of the reflective sheet body 20 .

With the above structure, the color backlight modules 100, 100a, 100b of the light-emitting keyboard can utilize the design of the colored light conversion layer 21 of the color reflective sheet 2 to provide converted colored light with a specific color to the keyboard module. Group K, without completely relying on the luminous color of the light source 3 to determine the luminous performance of the luminous keyboard. Therefore, the color backlight modules 100, 100a, 100b of the light-emitting keyboard of the present invention are not limited by the selection of light sources and the number of configurations, and can be easily manufactured and easily designed flexibly. In addition, the present invention uses photocurable resin to form the colored light conversion layer 21, which has better weather resistance and is not easy to fade, so that the color conversion performance of the colored light conversion layer 21 of the color reflective sheet 2 can be maintained for a long time.

The above descriptions and descriptions are only the descriptions of the preferred embodiments of the present invention. Those with ordinary knowledge in this technology can make other modifications according to the scope of the patent application defined below and the above descriptions, but these modifications should still be It is the creative spirit of this creation and within the scope of rights of this creation.

100: Color Backlight Module 100a: Color Backlight Module 100b: Color Backlight Module 1: light guide plate 2: Color reflective sheet 20: Reflective body 201: Upper surface 21: Colored light conversion layer 211: Colored light conversion block 3: Light source 4: Shading sheet 41: Shading area 42: Translucent area K: Keyboard Module K1: support plate K11: Light-transmitting part of support plate K2: keycap K21: keycap translucent part K3: Linkage L: light

[FIG. 1] is a schematic cross-sectional view showing a color backlight module of a light-emitting keyboard according to an embodiment of the present invention; [Fig. 2] is an exploded schematic diagram showing the color backlight module of the light-emitting keyboard according to an embodiment of the present invention; [FIG. 3] is a schematic cross-sectional view showing a light-emitting keyboard provided with a color backlight module of the light-emitting keyboard according to an embodiment of the present invention; [FIG. 4] is a cross-sectional schematic diagram showing a color backlight module of a light-emitting keyboard according to another embodiment of the present invention; [Fig. 5] is a schematic cross-sectional view showing a color backlight module of a light-emitting keyboard according to another embodiment of the present invention.

1: light guide plate

2: Color reflective sheet

20: Reflective body

201: Upper surface

21: Colored light conversion layer

211: Colored light conversion block

4: Shading sheet

Claims (10)

A color backlight module for a luminous keyboard, comprising: a light guide plate, disposed under a keyboard module of the light-emitting keyboard; a color reflective sheet, disposed under the light guide plate, the color reflective sheet includes a reflective sheet body and a colored light conversion layer, the colored light conversion layer is photocurable ink and is formed on the upper surface of the reflective sheet body; as well as a light source, disposed corresponding to the light guide plate to provide light to the light guide plate, Wherein, the light provided from the light source to the light guide plate and emitted from the bottom surface of the light guide plate to the color reflective sheet is converted into colored light with a specific color after passing through the colored light conversion layer, and the reflective sheet body reflection to illuminate the keyboard module. The color backlight module of a light-emitting keyboard according to claim 1, wherein the light-curable ink is an ultraviolet light-curable ink. The color backlight module of a light-emitting keyboard according to claim 1 or 2, wherein the light-curable ink is made of light-curable resin. The color backlight module for a light-emitting keyboard as claimed in claim 1, wherein the colored light conversion layer comprises a total of two or more colored light conversion blocks of different colors. The color backlight module of an illuminated keyboard according to claim 1, wherein the light source is a white light emitting diode. The color backlight module for a light-emitting keyboard according to claim 1, wherein the light source is a colored light-emitting diode, providing light other than white light. The color backlight module of a light-emitting keyboard according to claim 1, wherein the keyboard module comprises a support plate and a key cap, the support plate is arranged on the light guide plate, and the key cap is arranged on the support plate, The keycap has a keycap light-transmitting portion, the support plate has a support plate light-transmitting portion corresponding to the keycap light-transmitting portion, wherein the colored light conversion layer of the color reflective sheet is located on the support plate transparent portion Just below the light department. The color backlight module of the light-emitting keyboard according to claim 1, further comprises a light shielding sheet, which is arranged on the light guide plate and is used for shielding stray light. The color backlight module of a light-emitting keyboard according to claim 1, wherein the colored light conversion layer is formed on the upper surface of the reflective sheet body by means of digital inkjet. The color backlight module for a light-emitting keyboard according to claim 9, wherein the colored light conversion layer comprises a total of two or more colored light conversion blocks of different colors, and the plurality of colored light conversion blocks with different colors are mutually The light conversion blocks formed in the same batch are all formed on the upper surface of the reflective sheet in the same digital inkjet process.

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