CN114156113A - Backlight module and related light-emitting keyboard thereof - Google Patents
Backlight module and related light-emitting keyboard thereof Download PDFInfo
- Publication number
- CN114156113A CN114156113A CN202010930822.5A CN202010930822A CN114156113A CN 114156113 A CN114156113 A CN 114156113A CN 202010930822 A CN202010930822 A CN 202010930822A CN 114156113 A CN114156113 A CN 114156113A
- Authority
- CN
- China
- Prior art keywords
- light
- guide plate
- section
- light guide
- region
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010410 layer Substances 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 47
- 239000011241 protective layer Substances 0.000 claims abstract description 15
- 238000002161 passivation Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 239000000853 adhesive Substances 0.000 claims description 6
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000000016 photochemical curing Methods 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims 1
- 230000035515 penetration Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
- H01H13/83—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
Landscapes
- Push-Button Switches (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a backlight module and a related luminous keyboard, wherein the luminous keyboard is provided with a plurality of keys, and the backlight module comprises a light guide plate, a luminous element and a shielding element. The light emitting member is disposed under the light guide plate. The light-emitting member comprises a substrate layer, a plurality of light sources and a protective layer. The substrate layer has a plurality of lines. The plurality of light sources are arranged on the substrate layer, respectively correspond to the plurality of keys and are electrically connected with the plurality of circuits. The protective layer has a plurality of raised areas and is disposed on the substrate layer. Each raised area is embedded into a corresponding chamber of the light guide plate to cover the corresponding light source. The shielding member is located on the light guide plate. At least one of the light emitting element and the shielding element is bent to shield the side surface of the light guide plate. The backlight module and the related light-emitting keyboard thereof selectively bend one or all of the light-emitting piece and the shielding piece, so that the edge of the backlight module can shield the edge of the light guide plate, thereby achieving the purpose of preventing light leakage.
Description
Technical Field
The present invention relates to a backlight module and a related light-emitting keyboard, and more particularly, to a backlight module with light leakage shielding function and a related light-emitting keyboard.
Background
In a conventional light-emitting keyboard, a plurality of keys are disposed above a backlight module, a circuit board of the backlight module has a plurality of light-emitting elements, and the positions of the plurality of light-emitting elements respectively correspond to the plurality of keys to provide illumination. In the conventional light-emitting keyboard, a light guide plate of a backlight module is stacked on a circuit board, and then the light guide plate and the circuit board are covered by a keyboard shell. However, the illuminating light of the light emitting device easily overflows from the stack gap between the light guide plate and the circuit board, and the edge of the backlight module has unexpected light, which is not suitable for the design purpose of the light emitting keyboard. Therefore, how to design a backlight module without light leakage and a light-emitting keyboard thereof becomes one of the development targets of the related mechanism design industry.
Disclosure of Invention
In view of the problems in the prior art, the present invention provides a solution to the above problems.
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:
a light guide plate having a plurality of chambers; and
the luminous piece sets up the below at this light guide plate, and this luminous piece contains:
a substrate layer having a plurality of lines;
the plurality of light sources are arranged on the substrate layer, respectively correspond to the plurality of keys and are electrically connected with the plurality of circuits; and
the protective layer is arranged on the substrate layer and provided with a plurality of bulge areas, the bulge areas correspond to the containing chambers one by one, and the bulge areas are embedded into the corresponding containing chambers so as to cover corresponding light sources in the light sources;
the light emitting element further comprises a first section, a second section and a third section, wherein the first section bears the plurality of light sources and wraps the lower surface of the light guide plate, the second section is bent and connected with the outer edge of the first section to shield the side surface of the light guide plate, and the third section is bent and extended relative to the second section and is parallel to the light guide plate.
As an optional technical solution, the third section is bent outward from the second section to be flush with the light guide plate.
As an optional technical solution, the third section is bent inward from the second section to extend parallel to the first section.
As an optional technical solution, the substrate layer includes a carrying region, a bridging region and a bonding region, the carrying region corresponds to the first section for disposing the plurality of light sources, the bridging region corresponds to the second section for shielding the side surface of the light guide plate, and the bonding region corresponds to the third section for bending and extending from the bridging region.
As an optional technical solution, the protection layer includes an upper protection region, a side protection region and a combination region, the upper protection region corresponds to the first segment to cover the plurality of light sources, the side protection region corresponds to the second segment to shield the side surface of the light guide plate, and the combination region corresponds to the third segment to extend from the side protection region.
As an optional technical solution, the backlight module further includes:
and the shielding piece comprises a covering area and an attaching area, the covering area is arranged on the light guide plate, and the attaching area extends outwards relative to the covering area to be connected with the third section of the light emitting piece.
As an optional technical solution, the shielding member further includes a side edge region connected between the covering region and the attaching region for partially or completely shielding the side surface of the light guide plate.
As an alternative solution, the third section of the luminescent member is connected to the attaching region of the shielding member.
As an alternative solution, the attachment region of the shielding element is connected to the third section of the light emitting element downward.
As an optional technical solution, the third section of the light emitting element wraps at least one of the light guide plate and the shielding element.
As an optional technical solution, the third section of the light emitting element has a penetration region, and the substrate layer further has an external connection line disposed in the penetration region and connected to the plurality of lines.
The present invention also provides a backlight module for providing light to illuminate a plurality of keys, the backlight module comprising:
a light guide plate having a plurality of chambers; and
the luminous piece sets up the below at this light guide plate, and this luminous piece contains:
a substrate layer having a plurality of lines;
the plurality of light sources are arranged on the substrate layer, respectively correspond to the plurality of keys and are electrically connected with the plurality of circuits; and
the protective layer is arranged on the substrate layer and provided with a plurality of raised areas, and one raised area of the plurality of raised areas is embedded into one corresponding containing chamber of the plurality of containing chambers so as to cover one corresponding light source of the plurality of light sources;
the shielding piece is positioned on the light guide plate and comprises a covering area and a side edge area, the covering area is arranged on the light guide plate, and the side edge area is bent downwards relative to the covering area so as to partially or completely shield the side surface of the light guide plate.
As an optional technical solution, the shielding member further includes an attaching region connected to an outer edge of the side region for attaching an outer section of the substrate layer or the protective layer.
As an optional technical solution, at least one of the light emitting element and the shielding element has a penetration region, and the substrate layer further has a connection external wire, which is disposed in the penetration region and connected to the plurality of lines.
The invention also provides a light-emitting keyboard, comprising:
a plurality of keys; and
the backlight module is used for providing light to illuminate the plurality of keys and comprises:
a light guide plate having a plurality of chambers; and
the luminous piece sets up the below at this light guide plate, and this luminous piece contains:
a substrate layer having a plurality of lines;
the plurality of light sources are arranged on the substrate layer, respectively correspond to the plurality of keys and are electrically connected with the plurality of circuits; and
the protective layer is arranged on the substrate layer and provided with a plurality of bulge areas, the bulge areas correspond to the containing chambers one by one, and the bulge areas are embedded into the corresponding containing chambers so as to cover corresponding light sources in the light sources; and
a shielding member positioned on the light guide plate;
at least one of the light emitting element and the shielding element is bent to shield the side surface of the light guide plate.
As an optional technical solution, the light emitting device further includes a first section, a second section and a third section, the first section carries the plurality of 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 a side surface of the light guide plate, and the third section is bent and extended relative to the second section and parallel to the light guide plate.
As an optional technical solution, the shielding member includes a covering region and a side edge region, the covering region is disposed on the light guide plate, and the side edge region is bent downward relative to the covering region to partially or completely shield a side surface of the light guide plate.
As a selectable technical solution, a light shielding element is disposed on each side of the light guide plate and each edge of any chamber of the plurality of chambers.
As an optional technical solution, the shading element is a plurality of microstructure points or an ink coating.
As an optional technical solution, the corresponding accommodating chamber is a through hole structure or a concave hole structure.
As an optional technical solution, the protection layer is an independent film and is adhered to the upper surface of the substrate layer to cover the plurality of lines and the plurality of light sources.
As an optional technical solution, the protection layer is made of a thermosetting or photo-curing adhesive material, and is coated and fixed on the upper surface of the substrate layer to cover the plurality of lines and the plurality of light sources.
Compared with the prior art, the backlight module and the related light-emitting keyboard thereof selectively bend one or both of the light-emitting element and the shielding element, so that the edge of the backlight module can shield the edge of the light guide plate; the light-emitting piece is formed by stacking a plurality of layers of materials, so that the side edge of one or both of the substrate layer and the protective layer can be selectively bent to shield the edge of the light guide plate, and the purpose of preventing light leakage is achieved. Moreover, the side edge of the light guide plate and the edge of each accommodating chamber can form dense microstructure points or be provided with an ink coating as a shading element, so that the bending edges of the light emitting piece and the shielding piece can be assisted to improve the shading effect.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
Fig. 1 is an appearance schematic diagram of a light-emitting keyboard according to an embodiment of the present invention.
Fig. 2A is a partial sectional view of fig. 1.
Fig. 2B is a cross-sectional view of a light-emitting keyboard according to another embodiment of the present invention.
Fig. 3-6 are schematic side views of light-emitting keyboards according to various embodiments of the invention.
Fig. 7 and 8 are schematic side views of illuminated keyboards according to other embodiments of the present invention.
Fig. 9 and 10 are schematic external views of light guide plates according to different embodiments of the invention.
Fig. 11-14 are schematic side views of illuminated keyboards according to other embodiments of the present invention.
FIG. 15 is a top view of a glowing member according to an embodiment of the present invention.
Fig. 16 is a top view of a shield according to an embodiment of the present invention.
Detailed Description
In order to further understand the objects, structures, features and functions of the present invention, the following embodiments are described in detail.
Referring to fig. 1 to 6, fig. 1 is an external view of a light-emitting keyboard according to an embodiment of the present invention, fig. 2A is a cross-sectional view of fig. 1 along line a-a', fig. 2B is a cross-sectional view of a light-emitting keyboard 10 according to another embodiment of the present invention, and fig. 3 to 6 are schematic side views of the light-emitting keyboard 10 according to different embodiments of the present invention. As shown in fig. 2A, the light-emitting keyboard 10 may include a key 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 element 18 and a shielding element 20. The light emitting member 18 may be disposed below the light guide plate 16, and the shielding member 20 may be disposed above the light guide plate 16. An edge of one or both of the light emitting element 18 and the shielding element 20 may be partially bent to shield a side surface of the light guide plate 16.
The light guide plate 16 may have a chamber 161; the chamber 161 may be a through hole structure or a concave hole structure, but is not limited to these structures, and may be other types of structures. The light emitting member 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 lines 184 therein. The number of the keys 12 is plural, corresponding to the number of the light sources 182. The light source 182 may be disposed on the substrate layer 181, connected to the corresponding line 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 the raised areas 185 is plural, corresponding to the number of the chambers 161 and the light sources 182. Each raised region 185 can be inserted into a corresponding chamber 161 and cover a corresponding light source 182.
Generally, the passivation layer 183 is a separate film adhered on the upper surface of the substrate layer 181 to cover the plurality of traces 184 and the plurality of light sources 182. Alternatively, the protection layer 183 may be made of a thermosetting or photo-curing adhesive material, which is coated on the upper surface of the substrate layer 181 to directly cover the plurality of wires 184 and the plurality of light sources 182, and then cured by thermal energy or light energy to achieve the adhesion effect. The material and form of the passivation layer 183 are not limited to the above embodiments, and depend on the design requirements.
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 the light source 182 and the circuit 184 for covering 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 for shielding the side surface of the light guide plate 16. The third section 18C is bent upward relative to the second section 18B to extend parallel to the light guide plate 16. As shown in fig. 3, the third section 18C is bent outward from the second section 18B to be flush with the light guide plate 16 or the shielding member 20; in addition, as shown in fig. 4, the third section 18C may also be bent inward from the second section 18B to extend parallel to the first section 18A for covering the light guide plate 16 and/or the shielding member 20. Therefore, the light emitting elements 18 are bent to cover the side surfaces of the light guide plate 16 to prevent light leakage in the embodiment shown in fig. 3 and 4. It should be noted that the shielding member 20 may not be disposed on the light guide plate 16, but the practical application is not limited thereto.
As shown in fig. 5, the shielding element 20 can be divided into a covering region 20A, a side region 20B and an attaching region 20C. The cover region 20A may be disposed on the light guide plate 16. The side edge 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 attaching region 20C connects the outer edges of the side regions 20B for attaching the outer section of the light emitting member 18 downward. Therefore, in the embodiment shown in fig. 5, the two end edges of the shielding member 20 are bent to cover the side surface of the light guide plate 16, so as to achieve the purpose of preventing light leakage. Alternatively, as shown in fig. 6, two end edges of the light emitting element 18 are bent upward, and two end edges of the shielding element 20 are bent downward, that is, the light emitting element 18 and the shielding element 20 together cover the side surface of the light guide plate 16 to prevent light leakage.
Moreover, other variations of the shield 20 are possible. Referring to fig. 7 and 8, fig. 7 and 8 are schematic side views of a light-emitting keyboard 10 according to other embodiments of the present invention. As shown in fig. 7, the shielding element 20 may alternatively have only the covering region 20A and the side region 20B, so long as the side region 20B is bent downward and stops against the light emitting element 18, thereby effectively shielding the side surface of the side region 20B. In addition, as shown in fig. 8, the shield 20 may alternatively have only the footprint 20A and the attachment area 20C; the attaching region 20C of this embodiment is not connected to the side region 20B, but is connected to the covering region 20A and extends outward to connect to the upwardly bent third section 18C of the light emitting member 18.
In order to further improve the light shielding effect, the present invention may provide the light shielding element 162A or 162B at each side of the light guide plate 16 and/or each edge of all the chambers 161. Referring to fig. 9 and 10, fig. 9 and 10 are schematic external views of a light guide plate 16 according to different embodiments of the present invention. As shown in fig. 9, the light shielding element 162A may be a plurality of micro-structure dots formed on a side or a side surface of the light guide plate 16 and an outer edge of the chamber 161. Alternatively, as shown in fig. 10, the light shielding element 162B may be an ink coating having a property of shielding or absorbing light, which is coated on the side or side surface of the light guide plate 16 and the outer edge of the accommodating chamber 161.
Referring to fig. 2A, fig. 3, fig. 11 to fig. 14 are schematic side views of a light-emitting keyboard 10 according to other embodiments of the present invention. As shown in fig. 11, the substrate layer 181 of the light emitting member 18 can be divided into a carrier region 181A, a bridge region 181B and an adhesive region 181C. The carrying region 181A may correspond to the first section 18A of the light emitting element 18 for disposing the light source 182. The bridge region 181B may correspond to the second section 18B of the light emitting element 18 for shielding the side surface of the light guide plate 16. The adhesive region 181C may correspond to the third section 18C of the light emitting member 18, which is bent outward relative to the bridge region 181B and extends to be flush with the shielding member 20; without the shield 20, the light guide plate 16 is flush. As shown in fig. 12, the substrate layer 181 of the light emitting element 18 is also divided into a carrier region 181A, a bridge region 181B and an adhesive region 181C; slightly different from the embodiment of fig. 11, the bonding region 181C is bent inward relative to the bridge region 181B to extend parallel to the carrying region 181A.
As shown in fig. 13, the protection layer 183 of the light emitting member 18 may be divided into an upper protection region 183A, a side protection region 183B, and a bonding region 183C. The upper protection region 183A may correspond to the first section 18A of the light emitting member 18 for covering the light source 182. The side protection region 183B may correspond to the second section 18B of the light emitting element 18 for shielding the side surface of the light guide plate 16. The bonding region 183C may correspond to a third section 18C of the light emitting element 18, and the opposite side protection region 183B thereof is bent outward and extends to be flush with the shielding element 20; without the shield 20, the light guide plate 16 is flush. As shown in FIG. 14, the passivation layer 183 of the light emitting device 18 is also divided into an upper passivation region 183A, a side passivation region 183B and a bonding region 183C, but the bonding region 183C of this embodiment is bent inward and extends parallel to the upper passivation region 183A relative to the side passivation region 183B.
Referring to fig. 2A, fig. 3-8 and fig. 11-14, in the embodiment, the key 12 is disposed with a shielding member 20 above the light guide plate 16; however, the shielding element is not an essential element of the key, so please refer to the key 12' of fig. 2B. The backlight module 14 of the key 12' is mainly composed of a light guide plate 16 and a light emitting element 18. The light emitting member 18 may be disposed under the light guide plate 16. There is no shielding member above the light guide plate 16, and ink may be selectively coated on a part of the upper surface (e.g. the original region of the shielding member 20 of the key 12) or the side surface of the light guide plate 16, or a plurality of microstructure points may be formed, or the side edge of the light emitting member 18 may be extended to cover the side surface and part of the upper surface of the light guide plate 16, so as to shield light and prevent the key 12' from light leakage.
In the embodiment shown in fig. 2B, the light emitting element 18 can be bent upward to cover the light guide plate 16 by using at least one of the substrate layer 181 and the protection layer 183, so as to prevent light leakage. Referring to fig. 3-4 and fig. 11-14, an embodiment of the light emitting element 18 bent upward by the substrate layer 181 and/or the protective layer 183 to cover the side surface of the light guide plate 16 can be seen. If part of the upper surface of the light guide plate 16 is not coated with ink or provided with micro-structure points, the key 12' can be bent to the light emitting element 18 to shield the side surface of the light guide plate 16 and cover part of the upper surface of the light guide plate 16; if a portion of the upper surface of the light guide plate 16 is coated with ink or provided with micro-structure dots, the light emitting member 18 may shield only the side surface of the light guide plate 16, or shield both the side surface of the light guide plate 16 and a portion of the upper surface of the light guide plate 16.
Referring to fig. 15 and 16, fig. 15 is a top view of a light emitting device 18 according to an embodiment of the invention, and fig. 16 is a top view of a shielding device 20 according to an embodiment of the invention. The middle region of the light-emitting member 18 belongs to the first section 18A, the edge of the region is a third section 18C bent upward or downward, and the second section 18B can be shielded by the third section 18C and is not shown in the drawing. The light emitting element 18 can form a through region 18D in a specific range of the third section 18C for accommodating the external connection line 186 of the substrate layer 181. The external connection wire 186 is connected between the wire 184 of the light emitting element 18 and an external power supply wire. Alternatively, if the shield 20 has the attachment region 20C bent upward or downward, the present invention may form the penetration region 20D in a specific range of the attachment region 20C. The connection external wiring 186 of the base material layer 181 is disposed in the penetration region 20D and connected between the wiring 184 of the light emitting element 18 and an external power supply wiring.
In summary, the backlight module and the related light-emitting keyboard of the invention selectively bend one or both of the light-emitting element and the shielding element, so that the edge of the light-emitting element can shield the edge of the light guide plate; the light-emitting piece is formed by stacking a plurality of layers of materials, so that the side edge of one or both of the substrate layer and the protective layer can be selectively bent to shield the edge of the light guide plate, and the purpose of preventing light leakage is achieved. Furthermore, the side of the light guide plate and the edge of each chamber can form dense microstructure points or be provided with an ink coating as a shading element, so that the bending edge of the light emitting piece and the shielding piece can be assisted to improve the shading effect.
The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.
Claims (22)
1. A backlight module for providing light to illuminate a plurality of keys, the backlight module comprising:
a light guide plate having a plurality of chambers; and
the luminous piece sets up the below at this light guide plate, and this luminous piece contains:
a substrate layer having a plurality of lines;
the plurality of light sources are arranged on the substrate layer, respectively correspond to the plurality of keys and are electrically connected with the plurality of circuits; and
the protective layer is arranged on the substrate layer and provided with a plurality of bulge areas, the bulge areas correspond to the containing chambers one by one, and the bulge areas are embedded into the corresponding containing chambers so as to cover corresponding light sources in the light sources;
the light emitting element further comprises a first section, a second section and a third section, wherein the first section bears the plurality of light sources and wraps the lower surface of the light guide plate, the second section is bent and connected with the outer edge of the first section to shield the side surface of the light guide plate, and the third section is bent and extended relative to the second section and is parallel to the light guide plate.
2. The backlight module of claim 1, wherein the third section is bent outward from the second section to be flush with the light guide plate.
3. The backlight module of claim 1, wherein the third section is bent inward from the second section to be parallel to the first section.
4. The backlight module of claim 1, wherein the substrate layer comprises a supporting region corresponding to the first section for disposing the plurality of light sources, a bridging region corresponding to the second section for shielding the side surface of the light guide plate, and a bonding region corresponding to the third section for extending and bending from the bridging region.
5. The backlight module of claim 1, wherein the passivation layer comprises an upper passivation region corresponding to the first segment for covering the plurality of light sources, a side passivation region corresponding to the second segment for shielding the side surface of the light guide plate, and a bonding region corresponding to the third segment for bending and extending from the side passivation region.
6. The backlight module of claim 1, further comprising:
and the shielding piece comprises a covering area and an attaching area, the covering area is arranged on the light guide plate, and the attaching area extends outwards relative to the covering area to be connected with the third section of the light emitting piece.
7. The backlight module of claim 6, wherein the shielding member further comprises a side edge region connected between the covering region and the attaching region for partially or completely shielding the side surface of the light guide plate.
8. The backlight module of claim 6, wherein the third section of the light emitting element is upwardly connected to the attaching region of the shielding element.
9. The backlight module of claim 6, wherein the attaching region of the shielding element is connected to the third section of the light emitting element downward.
10. The backlight module of 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 of claim 1, wherein the third section of the light emitting element has a transmissive region, and the substrate layer further has a connection external wire disposed in the transmissive region and connected to the plurality of wires.
12. A backlight module for providing light to illuminate a plurality of keys, the backlight module comprising:
a light guide plate having a plurality of chambers; and
the luminous piece sets up the below at this light guide plate, and this luminous piece contains:
a substrate layer having a plurality of lines;
the plurality of light sources are arranged on the substrate layer, respectively correspond to the plurality of keys and are electrically connected with the plurality of circuits; and
the protective layer is arranged on the substrate layer and provided with a plurality of raised areas, and one raised area of the plurality of raised areas is embedded into one corresponding containing chamber of the plurality of containing chambers so as to cover one corresponding light source of the plurality of light sources;
the shielding piece is positioned on the light guide plate and comprises a covering area and a side edge area, the covering area is arranged on the light guide plate, and the side edge area is bent downwards relative to the covering area so as to partially or completely shield the side surface of the light guide plate.
13. The backlight module of claim 12, wherein the shielding member further comprises a bonding region connecting the outer edge of the side region for bonding an outer section of the substrate layer or the passivation layer.
14. The backlight module of claim 12, wherein at least one of the light emitting element and the shielding element has a transmissive region, and the substrate layer further has a connection external wire disposed in the transmissive region and connected to the plurality of wires.
15. A light-emitting keyboard, comprising:
a plurality of keys; and
the backlight module is used for providing light to illuminate the plurality of keys and comprises:
a light guide plate having a plurality of chambers; and
the luminous piece sets up the below at this light guide plate, and this luminous piece contains:
a substrate layer having a plurality of lines;
the plurality of light sources are arranged on the substrate layer, respectively correspond to the plurality of keys and are electrically connected with the plurality of circuits; and
the protective layer is arranged on the substrate layer and provided with a plurality of bulge areas, the bulge areas correspond to the containing chambers one by one, and the bulge areas are embedded into the corresponding containing chambers so as to cover corresponding light sources in the light sources; and
a shielding member positioned on the light guide plate;
at least one of the light emitting element and the shielding element is bent to shield the side surface of the light guide plate.
16. The light-emitting keyboard of claim 15, wherein the light-emitting member further comprises a first section, a second section and a third section, the first section carries the plurality of 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 a side surface of the light guide plate, and the third section is bent and extended relative to the second section to be parallel to the light guide plate.
17. The light-emitting keyboard of claim 15, wherein the shielding member comprises a covering region and a side region, the covering region is disposed on the light guide plate, and the side region is bent downward relative to the covering region to partially or completely shield a side surface of the light guide plate.
18. The illuminated keyboard according to claim 15, wherein each side of the light guide plate and each edge of any chamber of the plurality of chambers are provided with a light shielding element.
19. The illuminated keyboard according to claim 18, wherein the light blocking member is a plurality of micro-structured dots or an ink coating.
20. The illuminated keyboard according to claim 15, wherein the corresponding chamber is a through hole structure or a concave hole structure.
21. The light-emitting keyboard of claim 15, wherein the protection layer is an independent film adhered on the upper surface of the substrate layer to cover the plurality of lines and the plurality of light sources.
22. The light-emitting keyboard of claim 15, wherein the protection layer is made of a thermosetting or photo-curing adhesive material, coated and fixed on the upper surface of the substrate layer to cover the plurality of lines and the plurality of light sources.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010930822.5A CN114156113A (en) | 2020-09-07 | 2020-09-07 | Backlight module and related light-emitting keyboard thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010930822.5A CN114156113A (en) | 2020-09-07 | 2020-09-07 | Backlight module and related light-emitting keyboard thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114156113A true CN114156113A (en) | 2022-03-08 |
Family
ID=80460964
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010930822.5A Pending CN114156113A (en) | 2020-09-07 | 2020-09-07 | Backlight module and related light-emitting keyboard thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114156113A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008287982A (en) * | 2007-05-16 | 2008-11-27 | Citizen Electronics Co Ltd | Light guide key sheet and light guide key sheet module |
| CN101583822A (en) * | 2007-01-15 | 2009-11-18 | 阿尔卑斯电气株式会社 | Illuminating device, and input device having the former |
| TWM460297U (en) * | 2013-01-22 | 2013-08-21 | Darfon Electronics Corp | Back light structure and keyboard with back light |
| CN206931520U (en) * | 2017-07-19 | 2018-01-26 | 群光电子(苏州)有限公司 | Illuminated keyboard |
| CN107731606A (en) * | 2017-11-09 | 2018-02-23 | 苏州达方电子有限公司 | Illuminated keyboard |
-
2020
- 2020-09-07 CN CN202010930822.5A patent/CN114156113A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101583822A (en) * | 2007-01-15 | 2009-11-18 | 阿尔卑斯电气株式会社 | Illuminating device, and input device having the former |
| JP2008287982A (en) * | 2007-05-16 | 2008-11-27 | Citizen Electronics Co Ltd | Light guide key sheet and light guide key sheet module |
| TWM460297U (en) * | 2013-01-22 | 2013-08-21 | Darfon Electronics Corp | Back light structure and keyboard with back light |
| CN206931520U (en) * | 2017-07-19 | 2018-01-26 | 群光电子(苏州)有限公司 | Illuminated keyboard |
| CN107731606A (en) * | 2017-11-09 | 2018-02-23 | 苏州达方电子有限公司 | Illuminated keyboard |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110335775B (en) | Luminous keyboard and backlight module | |
| US7703971B2 (en) | LED display | |
| US8636373B2 (en) | Spread illuminating apparatus | |
| JP2007234584A (en) | Touch sensor | |
| TWI592707B (en) | Backlight module | |
| US11764008B2 (en) | Circuit structure, backlight module and light-emitting key device using the same | |
| US20160357269A1 (en) | Backlight module and lighting keyboard using the same | |
| US11287898B2 (en) | Backlight module and illuminated keyboard | |
| TWM528464U (en) | Lighting input device | |
| JP5427638B2 (en) | Switch module | |
| TWM606487U (en) | Illuminated keyboard | |
| CN111584283A (en) | Keyboard backlight module | |
| JP2018137156A (en) | Planar lighting device | |
| US11830688B2 (en) | Luminous keyboard and backlight module thereof | |
| TW202335012A (en) | Backlight module | |
| US20240038459A1 (en) | Light-emitting keyboard and backlight module | |
| CN114156113A (en) | Backlight module and related light-emitting keyboard thereof | |
| TWI728905B (en) | Backlight module and lighting keyboard | |
| KR20130073471A (en) | Printed-circuit board and back light unit including the same | |
| TWM435661U (en) | Luminous keyboard | |
| JP5427637B2 (en) | Switch module | |
| CN209747387U (en) | Light guide structure of backlight device | |
| US20240177950A1 (en) | Lighting keyboard, backlight module and lighting board | |
| JP6046015B2 (en) | Surface lighting device | |
| KR102063519B1 (en) | Printed circuit board and lighting source module having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |