Backlight module and related illuminated keyboard

Abstract

The present invention discloses a backlight module and a related luminous keyboard, wherein the luminous keyboard has a plurality of keys, and the backlight module includes a light guide plate, a light emitting component and a shielding component. The light emitting component is arranged below the light guide plate. The light emitting component includes a substrate layer, a plurality of light sources and a protective layer. The substrate layer has a plurality of circuits. The plurality of light sources are arranged on the substrate layer, respectively corresponding to the plurality of keys, and electrically connected to the plurality of circuits. The protective layer has a plurality of raised areas and is arranged on the substrate layer. Each raised area is embedded in a corresponding chamber of the light guide plate to cover the corresponding light source. The shielding component is located on the light guide plate. At least one of the light emitting component and the shielding component is partially bent to shield the side surface of the light guide plate. The backlight module and the related luminous keyboard of the present invention selectively bend one or all of the light emitting component and the shielding component so that its edge can shield the edge of the light guide plate to prevent light leakage.

Description

Technical Field

[0001] The invention relates to a backlight module and a related luminous keyboard, in particular to a backlight module with light leakage shielding function and a related luminous keyboard. Background Art

[0002] Traditional illuminated keyboards are equipped with multiple keys above the backlight module. The circuit board of the backlight module has multiple light-emitting elements. The positions of the multiple light-emitting elements correspond to the multiple keys to provide lighting. Traditional illuminated keyboards stack the light guide plate of the backlight module on the circuit board, and then use the keyboard shell to cover the light guide plate and the circuit board. However, the illumination light of the light-emitting element easily overflows from the stacking gap between the light guide plate and the circuit board, and there will be unexpected light at the edge of the backlight module, which does not meet the design purpose of the illuminated keyboard. Therefore, how to design a backlight module and illuminated keyboard that will not leak light has become one of the development goals of the design industry of related institutions. Summary of the invention

[0003] In view of the problems in the prior art, the present invention provides a method to solve the above problems.

[0004] Therefore, the technical problem to be solved by the present invention is to provide a backlight module for providing light to illuminate a plurality of keys, the backlight module comprising:

[0005] A light guide plate having a plurality of chambers; and

[0006] A light-emitting component is arranged below the light guide plate, and the light-emitting component comprises:

[0007] a substrate layer having a plurality of circuits;

[0008] A plurality of light sources are disposed on the substrate layer, respectively corresponding to the plurality of buttons and electrically connected to the plurality of circuits; and

[0009] A protective layer is disposed on the substrate layer, the protective layer having a plurality of raised areas, the plurality of raised areas corresponding to the plurality of chambers one by one, the plurality of raised areas being embedded in the corresponding plurality of chambers to cover corresponding light sources among the plurality of light sources;

[0010] The light-emitting component further includes a first section, a second section and a third section. The first section carries the multiple light sources and covers the lower surface of the light guide plate. The second section is bent and connected to the outer edge of the first section to shield the side surface of the light guide plate. The third section is bent and extended relative to the second section and is parallel to the light guide plate.

[0011] As an optional technical solution, the third section is bent and extended outward from the second section to be flush with the light guide plate.

[0012] As an optional technical solution, the third section bends inwardly and extends from the second section to be parallel to the first section.

[0013] As an optional technical solution, the substrate layer includes a supporting area, a bridging area and an adhesive area. The supporting area corresponds to the first section to set the multiple light sources, the bridging area corresponds to the second section to shield the side surface of the light guide plate, and the adhesive area corresponds to the third section to bend and extend from the bridging area.

[0014] As an optional technical solution, the protective layer includes an upper protection area, a side protection area and a combining area, the upper protection area corresponds to the first section to cover the multiple light sources, the side protection area corresponds to the second section to shield the side surface of the light guide plate, and the combining area corresponds to the third section to bend and extend from the side protection area.

[0015] As an optional technical solution, the backlight module further includes:

[0016] The shielding member comprises a covering area and an attaching area, wherein the covering area is arranged on the light guide plate, and the attaching area extends outwardly relative to the covering area to connect with the third section of the light emitting member.

[0017] As an optional technical solution, the shielding member further includes a side area connected between the covering area and the attachment area, and is used to partially or completely shield the side surface of the light guide plate.

[0018] As an optional technical solution, the third section of the light-emitting component is upwardly connected to the attachment area of ​​the shielding component.

[0019] As an optional technical solution, the attachment area of ​​the shielding member is downwardly connected to the third section of the light-emitting member.

[0020] As an optional technical solution, the third section of the light-emitting element covers at least one of the light guide plate and the shielding element.

[0021] As an optional technical solution, the third section of the light-emitting element has a penetration area, and the substrate layer further has an external connection wire, which is arranged in the penetration area and connected to the plurality of circuits.

[0022] The present invention also provides a backlight module for providing light to illuminate a plurality of keys, the backlight module comprising:

[0023] A light guide plate having a plurality of chambers; and

[0024] A light-emitting component is arranged below the light guide plate, and the light-emitting component comprises:

[0025] a substrate layer having a plurality of circuits;

[0026] A plurality of light sources are disposed on the substrate layer, respectively corresponding to the plurality of buttons and electrically connected to the plurality of circuits; and

[0027] A protective layer is disposed on the substrate layer, the protective layer having a plurality of raised areas, one of the plurality of raised areas is embedded in a corresponding one of the plurality of chambers to cover a corresponding one of the plurality of light sources;

[0028] The shielding member is located on the light guide plate and comprises a covering area and a side area. The covering area is arranged on the light guide plate, and the side area is bent downward relative to the covering area to partially or completely shield the side surface of the light guide plate.

[0029] As an optional technical solution, the shielding component further includes an attachment area connected to the outer edge of the side area and used for attaching the substrate layer or an outer section of the protective layer.

[0030] As an optional technical solution, at least one of the light emitting component and the shielding component has a penetration area, and the substrate layer further has an external connection wire, which is arranged in the penetration area and connected to the plurality of circuits.

[0031] The present invention also provides a luminous keyboard, comprising:

[0032] Multiple buttons; and

[0033] A backlight module is used to provide light to illuminate the multiple keys. The backlight module includes:

[0034] A light guide plate having a plurality of chambers; and

[0035] A light-emitting component is arranged below the light guide plate, and the light-emitting component comprises:

[0036] a substrate layer having a plurality of circuits;

[0037] A plurality of light sources are disposed on the substrate layer, respectively corresponding to the plurality of buttons and electrically connected to the plurality of circuits; and

[0038] a protective layer disposed on the substrate layer, the protective layer having a plurality of raised areas, the plurality of raised areas corresponding to the plurality of chambers one by one, the plurality of raised areas being embedded in the corresponding plurality of chambers to cover corresponding light sources among the plurality of light sources; and

[0039] A shielding member, located on the light guide plate;

[0040] At least one of the light emitting element and the shielding element is bent to shield the side surface of the light guide plate.

[0041] As an optional technical solution, the light-emitting component also includes a first section, a second section and a third section. The first section carries the multiple light sources and covers the lower surface of the light guide plate. The second section is bent and connected to an outer edge of the first section to shield the side surface of the light guide plate. The third section is bent and extended relative to the second section and is parallel to the light guide plate.

[0042] As an optional technical solution, the shielding member includes a covering area and a side area, the covering area is arranged on the light guide plate, and the side area is bent downward relative to the covering area to partially or completely shield the side surface of the light guide plate.

[0043] As an optional technical solution, shading elements are provided on each side of the light guide plate and each edge of any chamber of the plurality of chambers.

[0044] As an optional technical solution, the shading element is a plurality of microstructure dots or an ink coating.

[0045] As an optional technical solution, the corresponding chamber is a perforated structure or a concave hole structure.

[0046] As an optional technical solution, the protective layer is an independent film adhered to the upper surface of the substrate layer to cover the multiple circuits and the multiple light sources.

[0047] As an optional technical solution, the protective layer is made of a heat-curing or light-curing adhesive, coated and fixed on the upper surface of the substrate layer to cover the multiple circuits and the multiple light sources.

[0048] Compared with the prior art, the backlight module and the related luminous keyboard of the present invention selectively bend one or all of the luminous components and the shielding components so that their edges can block the edge of the light guide plate; the luminous components are stacked with multiple layers of materials, so the luminous components can selectively bend the sides of one or both of the substrate layer and the protective layer to block the edge of the light guide plate to prevent light leakage. Furthermore, the side of the light guide plate and the edge of each chamber can form dense microstructure points or set an ink coating as a shading element, which can assist the bent edges of the luminous components and the shielding components to improve the shading effect.

[0049] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 The figure is a schematic diagram of the appearance of the luminous keyboard according to the embodiment of the present invention.

[0051] Figure 2A for Figure 1 A cross-sectional view of a portion of the area.

[0052] Figure 2B FIG. 4 is a cross-sectional view of an illuminated keyboard according to another embodiment of the present invention.

[0053] Figures 3 to 6 Schematic side views of luminous keyboards according to different embodiments of the present invention.

[0054] Figure 7 and Figure 8 It is a simplified side view of an illuminated keyboard according to another embodiment of the present invention.

[0055] Fig. 9 and Fig.10 Schematic diagrams of the appearance of light guide plates according to different embodiments of the present invention.

[0056] Figures 11 to 14 It is a simplified side view of an illuminated keyboard according to another embodiment of the present invention.

[0057] Fig.15 It is a top view of the light emitting element according to an embodiment of the present invention.

[0058] Fig.16 FIG. 4 is a top view of a shielding member according to an embodiment of the present invention. DETAILED DESCRIPTION

[0059] In order to provide a further understanding of the purpose, structure, features, and functions of the present invention, the following detailed description is given in conjunction with the embodiments.

[0060] See also Figures 1 to 6 , Figure 1 is a schematic diagram of the appearance of an luminous keyboard according to an embodiment of the present invention, Figure 2A for Figure 1 A cross-sectional view along line A-A', Figure 2B FIG. 2 is a cross-sectional view of an illuminated keyboard 10 according to another embodiment of the present invention. Figures 3 to 6 1 is a schematic side view of the luminous keyboard 10 according to different embodiments of the present invention. Figure 2A As shown, the illuminated keyboard 10 may include keys 12 and a backlight module 14. The backlight module 14 is used to provide light to illuminate the keys 12. The backlight module 14 may include a light guide plate 16, a light emitting member 18, and a shielding member 20. The light emitting member 18 may be disposed below the light guide plate 16, and the shielding member 20 may be located above the light guide plate 16. The edges of one or both of the light emitting member 18 and the shielding member 20 may be partially bent to shield the side surface of the light guide plate 16.

[0061] The light guide plate 16 may have a chamber 161; the chamber 161 may be a perforated structure or a concave hole structure, but is not limited to these structural forms and may also be other types of structures. The light-emitting element 18 may include a substrate layer 181, a light source 182 and a protective layer 183. The substrate layer 181 may have a plurality of circuits 184. The number of keys 12 is multiple, corresponding to the number of light sources 182. The light source 182 may be disposed on the substrate layer 181, connected to the corresponding circuit 184 and located below the corresponding key 12. The protective layer 183 may be disposed on the substrate layer 181. The protective layer 183 may have a raised area 185. The number of raised areas 185 is multiple, corresponding to the number of chambers 161 and light sources 182. Each raised area 185 may be embedded in the corresponding chamber 161 and cover the corresponding light source 182.

[0062] Generally speaking, the protective layer 183 can be an independent film, which is adhered to the upper surface of the substrate layer 181 to cover the multiple circuits 184 and the multiple light sources 182. Alternatively, the protective layer 183 can also be made of a heat-curing or light-curing adhesive, which is coated on the upper surface of the substrate layer 181 to directly cover the multiple circuits 184 and the multiple light sources 182, and then cured by heat or light energy to achieve an adhesive effect. The material and form of the protective layer 183 are not limited to the above-mentioned embodiments, and it depends on the design requirements.

[0063] The light emitting element 18 can be divided into a first section 18A, a second section 18B and a third section 18C. The first section 18A carries a light source 182 and a circuit 184, and is used to cover the lower surface of the light guide plate 16. The second section 18B is bent and connected to the outer edge of the first section 18A, and is used to shield the side surface of the light guide plate 16. The third section 18C is bent upward relative to the second section 18B and extends parallel to the light guide plate 16. Figure 3 As shown, the third section 18C is bent outwardly from the second section 18B to be flush with the light guide plate 16 or the shielding member 20; in addition, as shown Figure 4 As shown, the third section 18C can also be bent inwardly from the second section 18B to extend parallel to the first section 18A, and is used to cover the light guide plate 16 and / or the shielding member 20. Therefore, Figure 3 and Figure 4 In the embodiment shown, both ends of the light emitting element 18 are bent to cover the side surface of the light guide plate 16 to prevent light leakage. In particular, the shielding element 20 may not be provided on the light guide plate 16 in this embodiment, but the actual application is not limited thereto.

[0064] like Figure 5As shown, the shielding member 20 can be divided into a covering area 20A, a side area 20B and an attachment area 20C. The covering area 20A can be disposed on the light guide plate 16. The side area 20B can be bent downward relative to the covering area 20A to partially or completely shield the side surface of the light guide plate 16. The attachment area 20C is connected to the outer edge of the side area 20B and is used to attach the outer section of the light emitting member 18 downward. It can be seen that Figure 5 The embodiment shown is to bend the two end edges of the shielding member 20 to cover the side surface of the light guide plate 16 to prevent light leakage. Figure 6 In the illustrated embodiment, both ends of the light emitting member 18 are bent upward, and both ends of the shielding member 20 are bent downward, which means that the light emitting member 18 and the shielding member 20 together cover the side surface of the light guide plate 16 to prevent light leakage.

[0065] Furthermore, the shielding element 20 may have other variations. Figure 7 and Figure 8 , Figure 7 and Figure 8 FIG. 1 is a schematic side view of an illuminated keyboard 10 according to another embodiment of the present invention. Figure 7 As shown, the shielding member 20 may have only the covering area 20A and the side area 20B. As long as the side area 20B is bent downward and stops at the light emitting member 18, the side surface of the side area 20B can be effectively shielded. Figure 8 As shown, the shielding member 20 may optionally have only a covering area 20A and an attachment area 20C; the attachment area 20C of this embodiment is not connected to the side area 20B, but is connected to the covering area 20A and extends outward to connect to the upwardly bent third section 18C of the light emitting member 18.

[0066] To further improve the shading effect, the present invention may set shading elements 162A or 162B on each side of the light guide plate 16 and / or each edge of all the chambers 161. Fig. 9 and Fig.10 , Fig. 9 and Fig.10 Schematic diagrams of the appearance of the light guide plate 16 according to different embodiments of the present invention. Fig. 9 As shown, the shading element 162A may be a plurality of microstructure points formed on the side or side surface of the light guide plate 16 and the outer edge of the chamber 161. Alternatively, as Fig.10 As shown, the shading element 162B may be an ink coating having the property of blocking or absorbing light, and is coated on the side or side surface of the light guide plate 16 and the outer edge of the chamber 161 .

[0067] See also Figure 2A , Figure 3 , Figures 11 to 14 , Figures 11 to 14 FIG. 1 is a schematic side view of an illuminated keyboard 10 according to another embodiment of the present invention. Fig.11As shown, the substrate layer 181 of the light emitting element 18 can be divided into a bearing area 181A, a bridging area 181B and an adhesive area 181C. The bearing area 181A can correspond to the first section 18A of the light emitting element 18, which is used to set the light source 182. The bridging area 181B can correspond to the second section 18B of the light emitting element 18, which is used to shield the side surface of the light guide plate 16. The adhesive area 181C can correspond to the third section 18C of the light emitting element 18, which is bent outwardly relative to the bridging area 181B and extends to be flush with the shielding element 20; if there is no shielding element 20, it is flush with the light guide plate 16. Fig.12 As shown, the substrate layer 181 of the light emitting element 18 is also divided into a bearing area 181A, a bridging area 181B and a bonding area 181C; Fig.11 The embodiment is slightly different in that the bonding area 181C is bent inwardly relative to the bridging area 181B to extend parallel to the supporting area 181A.

[0068] like Fig.13 As shown, the protective layer 183 of the light emitting element 18 can be divided into an upper protection area 183A, a side protection area 183B and a bonding area 183C. The upper protection area 183A can correspond to the first section 18A of the light emitting element 18, which is used to cover the light source 182. The side protection area 183B can correspond to the second section 18B of the light emitting element 18, which is used to shield the side surface of the light guide plate 16. The bonding area 183C can correspond to the third section 18C of the light emitting element 18, and the side protection area 183B is bent outward and extended to be flush with the shielding element 20; if there is no shielding element 20, it is flush with the light guide plate 16. Fig.14 As shown, the protection layer 183 of the light emitting element 18 is also divided into an upper protection area 183A, a side protection area 183B and a bonding area 183C, but in this embodiment, the bonding area 183C is bent inwardly relative to the side protection area 183B to extend parallel to the upper protection area 183A.

[0069] Please refer to Figure 2A 3-8 and 11-14, the key 12 of this embodiment is provided with a shielding member 20 above the light guide plate 16; however, the shielding member is not a necessary element of the key, so please refer to Figure 2B The backlight module 14 of the key 12' is mainly composed of a light guide plate 16 and a light emitting member 18. The light emitting member 18 can be arranged below the light guide plate 16. There is no shielding member above the light guide plate 16, and ink can be coated on part of the upper surface (e.g., the area where the shielding member 20 of the key 12 is originally located) or the side surface of the light guide plate 16, or a plurality of microstructure points can be formed, or the side of the light emitting member 18 can be extended to cover the side surface and part of the upper surface of the light guide plate 16, so as to shield the light and prevent the key 12' from leaking light.

[0070] exist Figure 2BIn the illustrated embodiment, the light emitting element 18 can be bent upward using at least one of the substrate layer 181 and the protective layer 183 to cover the light guide plate 16, so as to prevent light leakage. The implementation of the light emitting element 18 being bent upward using the substrate layer 181 and / or the protective layer 183 to cover the side surface of the light guide plate 16 can refer to FIGS. 3-4 and 11-14. If ink is not applied to a portion of the upper surface of the light guide plate 16 or micro-structure points are not set, the key 12' can be bent to block the side surface of the light guide plate 16 and cover a portion of the upper surface of the light guide plate 16; if ink is applied to a portion of the upper surface of the light guide plate 16 or micro-structure points are set, the light emitting element 18 can only block the side surface of the light guide plate 16, or both block the side surface of the light guide plate 16 and cover a portion of the upper surface of the light guide plate 16.

[0071] See also Fig.15 and Fig.16 , Fig.15 FIG. 1 is a top view of the light emitting element 18 according to an embodiment of the present invention. Fig.16 It is a top view of the shielding member 20 of an embodiment of the present invention. The middle area of ​​the light-emitting member 18 belongs to the first section 18A, and the edge of the area is the third section 18C that is bent upward or downward. The second section 18B may be shielded by the third section 18C and is therefore not marked in the figure. The light-emitting member 18 may form a penetration area 18D in a specific range of the third section 18C to accommodate the external connection wire 186 of the substrate layer 181. The external connection wire 186 is connected between the circuit 184 of the light-emitting member 18 and the external power supply circuit. Alternatively, if the shielding member 20 has an attachment area 20C that is bent upward or downward, the present invention may form a penetration area 20D in a specific range of the attachment area 20C. The external connection wire 186 of the substrate layer 181 is arranged in the penetration area 20D and connected between the circuit 184 of the light-emitting member 18 and the external power supply circuit.

[0072] In summary, the backlight module and the related luminous keyboard of the present invention selectively bend one or all of the luminous components and the shielding components so that their edges can block the edge of the light guide plate; the luminous components are stacked with multiple layers of materials, so the luminous components can selectively bend the sides of one or both of the substrate layer and the protective layer to block the edge of the light guide plate to prevent light leakage. Furthermore, the side of the light guide plate and the edge of each chamber can form dense microstructure points or set an ink coating as a shading element, which can assist the bending edges of the luminous components and the shielding components to improve the shading effect.

[0073] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field may make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A backlight module, used to provide light to illuminate a plurality of keys, characterized in that: The backlight module includes: A light guide plate having a plurality of chambers; and A light-emitting component is arranged below the light guide plate, and the light-emitting component comprises: a substrate layer having a plurality of circuits; A plurality of light sources are disposed on the substrate layer, respectively corresponding to the plurality of buttons and electrically connected to the plurality of circuits; as well as A protective layer is disposed on the substrate layer, the protective layer has a plurality of raised areas, the plurality of raised areas correspond to the plurality of chambers one by one, the plurality of raised areas are embedded in the corresponding plurality of chambers to cover the corresponding light sources among the plurality of light sources, and the protective layer includes a side protection area; The light-emitting component further includes a first section, a second section and a third section. The first section carries the multiple light sources and covers the lower surface of the light guide plate. The second section is bent and connected to the outer edge of the first section to shield the side surface of the light guide plate. The third section is bent and extended relative to the second section and is parallel to the light guide plate. The side protection area corresponds to the second section to shield the side surface of the light guide plate.

2. The backlight module according to claim 1, wherein: The third section bends and extends outward from the second section to be flush with the light guide plate.

3. The backlight module according to claim 1, wherein: The third section bends inwardly from the second section and extends to be parallel to the first section.

4. The backlight module according to claim 1, wherein: The substrate layer includes a bearing area, a bridging area and an adhesive area. The bearing area corresponds to the first section to set the multiple light sources, the bridging area corresponds to the second section to shield the side surface of the light guide plate, and the adhesive area corresponds to the third section to bend and extend from the bridging area.

5. The backlight module according to claim 1, wherein: The protection layer further comprises an upper protection area and a combining area. The upper protection area corresponds to the first section to cover the plurality of light sources. The combining area corresponds to the third section to bend and extend from the side protection area.

6. The backlight module according to claim 1, wherein: The backlight module further comprises: The shielding member comprises a covering area and an attaching area, wherein the covering area is arranged on the light guide plate, and the attaching area extends outwardly relative to the covering area to connect with the third section of the light emitting member.

7. The backlight module according to claim 6, wherein: The shielding member further comprises a side region connected between the covering region and the attaching region and used for partially or completely shielding the side surface of the light guide plate.

8. The backlight module according to claim 6, wherein: The third section of the light emitting element is connected upward to the attachment area of ​​the shielding element.

9. The backlight module according to claim 6, wherein: The attachment area of ​​the shielding element is downwardly connected to the third section of the light emitting element.

10. The backlight module according to claim 6, wherein: The third section of the light emitting element covers at least one of the light guide plate and the shielding element.

11. The backlight module according to claim 1, wherein: The third section of the light-emitting element has a penetration area, and the substrate layer further has an external connection wire, which is arranged in the penetration area and connected to the plurality of circuits.

12. A backlight module for providing light to illuminate a plurality of keys, characterized in that: The backlight module includes: A light guide plate having a plurality of chambers; and A light-emitting component is arranged below the light guide plate, and the light-emitting component comprises: a substrate layer having a plurality of circuits; A plurality of light sources are disposed on the substrate layer, respectively corresponding to the plurality of buttons and electrically connected to the plurality of circuits; and A protective layer is disposed on the substrate layer, the protective layer has a plurality of raised areas, one of the plurality of raised areas is embedded in a corresponding one of the plurality of chambers to cover a corresponding one of the plurality of light sources, and the protective layer includes a side protection area; The shielding member is located on the light guide plate, and includes a covering area and a side area. The covering area is arranged on the light guide plate, and the side area is bent downward relative to the covering area to partially or completely shield the side surface of the light guide plate. The side protection area shields the side surface of the light guide plate.

13. The backlight module according to claim 12, wherein: The shielding component further comprises an attachment area connected to the outer edge of the side area and used for attaching the substrate layer or an outer section of the protective layer.

14. The backlight module according to claim 12, wherein: At least one of the light emitting component and the shielding component has a penetration area, and the substrate layer further has an external connection wire, which is arranged in the penetration area and connected to the plurality of circuits.

15. A luminous keyboard, characterized in that: The luminous keyboard includes: Multiple buttons; as well as A backlight module is used to provide light to illuminate the multiple keys. The backlight module includes: A light guide plate having a plurality of chambers; and A light-emitting component is arranged below the light guide plate, and the light-emitting component comprises: a substrate layer having a plurality of circuits; A plurality of light sources are disposed on the substrate layer, respectively corresponding to the plurality of buttons and electrically connected to the plurality of circuits; as well as A protective layer is disposed on the substrate layer, the protective layer has a plurality of raised areas, the plurality of raised areas correspond to the plurality of chambers one by one, the plurality of raised areas are embedded in the corresponding plurality of chambers to cover the corresponding light sources among the plurality of light sources, and the protective layer includes a side protection area; as well as A shielding member, located on the light guide plate; At least one of the light emitting element and the shielding element is partially bent to shield the side surface of the light guide plate, and the side protection area shields the side surface of the light guide plate.

16. The luminous keyboard according to claim 15, characterized in that: The light-emitting device also includes a first section, a second section and a third section. The first section carries the multiple light sources and covers the lower surface of the light guide plate. The second section is bent and connected to an outer edge of the first section to shield the side surface of the light guide plate. The third section is bent and extended relative to the second section and is parallel to the light guide plate.

17. The luminous keyboard according to claim 15, characterized in that: The shielding component comprises a covering area and a side area. The covering area is arranged on the light guide plate. The side area is bent downward relative to the covering area to partially or completely shield the side surface of the light guide plate.

18. The luminous keyboard according to claim 15, characterized in that: Light shielding elements are arranged on each side of the light guide plate and each edge of any container of the plurality of containers.

19. The luminous keyboard according to claim 18, characterized in that: The shading element is a plurality of microstructure dots or an ink coating.

20. The luminous keyboard according to claim 15, characterized in that: The corresponding chamber is a perforated structure or a concave hole structure.

21. The luminous keyboard according to claim 15, characterized in that: The protection layer is an independent film, which is adhered to the upper surface of the substrate layer to cover the multiple circuits and the multiple light sources.

22. The luminous keyboard according to claim 15, characterized in that: The protective layer is made of a heat-curing or light-curing adhesive material, and is coated and fixed on the upper surface of the substrate layer to cover the multiple circuits and the multiple light sources.

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