CN111584282A - Backlight module applied to luminous keyboard - Google Patents
Backlight module applied to luminous keyboard Download PDFInfo
- Publication number
- CN111584282A CN111584282A CN201910122599.9A CN201910122599A CN111584282A CN 111584282 A CN111584282 A CN 111584282A CN 201910122599 A CN201910122599 A CN 201910122599A CN 111584282 A CN111584282 A CN 111584282A
- Authority
- CN
- China
- Prior art keywords
- light
- backlight module
- guide plate
- plate
- light guide
- 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.)
- Granted
Links
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
-
- 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
- H01H13/702—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
- H01H13/705—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
- H01H13/7065—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 with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys characterised by the mechanism between keys and layered keyboards
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H2219/00—Legends
- H01H2219/054—Optical elements
- H01H2219/06—Reflector
Abstract
The invention provides a backlight module applied to a luminous keyboard, wherein the luminous keyboard comprises a keyboard module and the backlight module, the keyboard module comprises a plurality of keys, and the backlight module is arranged on the lower surface of the keyboard module. The backlight module comprises a light emitting plate, a light guide plate and an adhesive layer. The adhesive layer is arranged between the light emitting plate and the light guide plate. The adhesive layer comprises a plurality of first colloids. The first colloid is arranged at intervals corresponding to the two adjacent keys, so that a first gap is formed between the two adjacent first colloids. The first colloid is widely arranged, so that the air distribution between the light emitting plate and the light guide plate can be reduced. The first gap can be used as a channel for exhausting air to exhaust the air between the light-emitting plate and the light guide plate, so as to achieve the function of air escape.
Description
Technical Field
The invention provides a backlight module applied to a luminous keyboard, in particular to a connection relation between a light guide plate and a light-emitting plate.
Background
Nowadays, the rapid development of electronic technology and information industry makes various electronic products develop towards the trend of being light, thin, short, small and powerful, such as computers, notebook computers, Mobile Internet Devices (MID), smart phones, tablet computers, and the like, which have become indispensable electronic products for modern people in daily life or work, and users and electronic products mostly use input devices such as mice, keyboards, and the like to communicate with each other, wherein the keyboard is most convenient to perform the input operation of characters, numbers or instructions, and the practical function is improved.
In order to make the eyes clearly see the symbols on each key under the environment of insufficient light, technicians introduce a light guide plate and a light source technology into the keyboard and develop a light-emitting keyboard with a backlight module, so that the light generated by the backlight module can be projected to the back of each key cap to form a light-emitting effect, and a user can clearly see the symbols on the key caps. The light emitting keyboard on the market at present comprises a key module and a backlight module, wherein the backlight module comprises a light guide plate, a light emitting plate, a reflecting plate and other multilayer structures. The multi-layer structures of the backlight module are bonded with each other by using an adhesive, and a plurality of dot-shaped adhesives are formed on the surface of the light guide plate in a dispensing manner at present, and the light guide plate and other structures (hereinafter, the light emitting plate is taken as an example) are bonded by the dot-shaped adhesives.
However, after the light guide plate is bonded with the light-emitting plate, air remains at the position between the light guide plate and the light-emitting plate where no adhesive exists, and thus the hand feeling of a user during typing is affected, for example, the air feeling is generated during pressing. Moreover, when the backlight module is twisted, the lamination may occur, which may affect the assembly of the subsequent light-emitting keyboard. Therefore, the conventional design of adhering the light guide plate and other structures with a plurality of dots of adhesive causes the backlight module to have a layered phenomenon and affects the typing feel of the light-emitting keyboard, which is a key to the people in the art to want to redesign.
Disclosure of Invention
In view of the above, the main object of the present invention is to provide a light emitting module applied to a light emitting keyboard, wherein a (first) connecting portion, which may be a glue, is provided between a light guide plate and a light emitting plate. The problem that excessive air is generated due to the connection of the conventional backlight module by the point-shaped colloid is solved by the first gap between the two adjacent first connecting parts.
To achieve the above object, the present invention provides a backlight module for a light-emitting keyboard. The luminous keyboard comprises a keyboard module and the backlight module, wherein the keyboard module comprises a plurality of keys, and the backlight module is arranged on a lower surface of the keyboard module. The backlight module comprises a light emitting plate, a light guide plate, a reflecting plate, an adhesive layer and at least one light emitting component. The light guide plate is provided with a first opening. The reflector has a reflective surface and a second opening. The reflecting surface is connected with a lower surface of the light guide plate. The second opening corresponds to the first opening. The adhesive layer is arranged between the light emitting plate and the light guide plate. The adhesive layer comprises a plurality of first colloids. The first glue bodies are arranged at intervals corresponding to two adjacent keys, so that a first gap is formed between the two adjacent first glue bodies. The light emitting assembly is accommodated in the first opening and the second opening.
In an embodiment of the invention, the light-emitting plate has a plurality of light-emitting areas and a plurality of light-shielding areas, each of the light-shielding areas is located between two adjacent light-emitting areas, and the first colloids are arranged at intervals corresponding to the light-shielding areas.
In an embodiment of the present invention, the adhesive layer further includes an edge glue. The edge glue corresponds to the periphery of the upper surface of the light guide plate, and at least one side of the edge glue is provided with a plurality of second gaps.
In an embodiment of the present invention, the adhesive layer further includes a cyclic colloid. The annular colloid is arranged corresponding to the edge of the first opening and is not connected with the first colloids.
In an embodiment of the invention, the first encapsulant is disposed corresponding to the light-shielding regions in the longitudinal direction. The adhesive layer further comprises a plurality of second colloids which are arranged corresponding to the transverse light-shielding areas, and the second colloids are not connected with the annular colloids or the first colloids.
In order to achieve the above object, the present invention further provides a backlight module applied to a light-emitting keyboard, wherein the light-emitting keyboard comprises a keyboard module and a backlight module. The keyboard module comprises a plurality of keys. The backlight module is arranged on a lower surface of the keyboard module, the backlight module sequentially comprises a light emitting plate, a light guide plate and a reflecting plate from the keyboard module to the bottom, and the backlight module further comprises at least one light emitting component. The light guide plate is provided with a first opening. The reflector has a reflective surface and a second opening. The reflecting surface is connected with a lower surface of the light guide plate, and the second opening hole corresponds to the first opening hole. The light emitting assembly is accommodated in the first opening and the second opening. The backlight module is characterized in that: a plurality of first connecting parts are arranged between the light emitting plate and the light guide plate, wherein the first connecting parts are arranged at intervals corresponding to two adjacent keys, so that a first gap is formed between the two adjacent first connecting parts, and the first connecting parts are connected with the light emitting plate and the light guide plate.
In an embodiment of the invention, the light-emitting plate has a plurality of light-emitting areas and a plurality of light-shielding areas, each of the light-shielding areas is located between two adjacent light-emitting areas, and the first connecting portions are disposed at intervals corresponding to the light-shielding areas.
In an embodiment of the invention, a side connection portion is disposed between the light-emitting plate and the light guide plate. The side connecting part corresponds to the periphery of an upper surface of the light guide plate, and at least one side of the side connecting part is provided with a plurality of second gaps.
In an embodiment of the invention, an annular connection portion is disposed between the light-emitting plate and the light guide plate. The annular connecting part is arranged corresponding to the edge of the first opening and is not connected with the first connecting parts.
In an embodiment of the invention, the first connecting portions are disposed corresponding to the longitudinal light-shielding regions, and a plurality of second connecting portions are further disposed between the light-emitting plate and the light guide plate and corresponding to the transverse light-shielding regions, and the second connecting portions are not connected to the annular connecting portions or the first connecting portions.
In an embodiment of the invention, the first connection portion, the side connection portion, the annular connection portion, or the second connection portion is formed between the light-emitting plate and the light guide plate in a welding manner.
In an embodiment of the invention, each of the first connecting portion, the side connecting portion, the annular connecting portion, and the second connecting portion is a rubber body.
In summary, according to the backlight module applied to the light-emitting keyboard of the present invention, the light-emitting plate and the light guide plate are connected to each other through the first adhesive or the first connecting portion, and the first adhesive or the first connecting portion is disposed at an interval corresponding to the two adjacent keys, so that a first gap is formed between the two adjacent first adhesives or the first connecting portions. The first colloid or the first connecting part is widely arranged, so that the air distribution between the light emitting plate and the light guide plate can be reduced. In addition, the first gap can be used as a channel for exhausting air, that is, the air between the light-emitting plate and the light guide plate can be exhausted through the first gap, so as to achieve the function of air escape.
Drawings
Fig. 1 is a schematic view of a backlight module applied to a light-emitting keyboard according to a first embodiment of the present invention.
Fig. 2 is an exploded view of the illuminated keyboard shown in fig. 1.
Fig. 3 is a schematic view illustrating the adhesive layer shown in fig. 2 disposed on the light guide plate.
Fig. 4 is a schematic partial cross-sectional view of the illuminated keyboard shown in fig. 1.
Fig. 5 is a schematic partial cross-sectional view illustrating a backlight module applied to a light-emitting keyboard according to a second embodiment of the present invention.
Wherein the reference numerals are:
1. 1a, backlight module
10. 10a, light-emitting plate
11. 11a, light emergent area
12. 12a, light-shielding area
20. 20a, a light guide plate
21. First opening hole
22. Lower surface
23. Upper surface of
30. 30a, a reflection plate
31. 31a, reflection surface
32. Second opening hole
40. Light emitting assembly
41. Circuit board
42. Light emitting unit
50. Adhesive layer
50a, first connection part
51. The first colloid
510. First gap
52. Second colloid
53. Edge glue
530. Second gap
54. Cyclic colloid
9. Keyboard module
91. Lower surface
92. Push-button
A. Space(s)
K. Luminous keyboard
Detailed Description
To achieve the above objects and advantages, the technical means and structure of the present invention are described in detail with reference to the preferred embodiments of the present invention, and the structure and function are described in detail as follows.
Fig. 1 is a schematic view of a backlight module applied to a light-emitting keyboard according to a first embodiment of the present invention, and fig. 2 is an exploded schematic view of the light-emitting keyboard shown in fig. 1, please refer to fig. 1 and fig. 2. First, the backlight module 1 of the present embodiment is applied to a light-emitting keyboard K, and the light-emitting keyboard K includes the backlight module 1 and a keyboard module 9. The backlight module 1 is disposed corresponding to the keyboard module 9, and the backlight module 1 of the present embodiment is disposed on the lower surface 91 of the keyboard module 9. The backlight module 1 includes a light emitting plate 10, a light guide plate 20, a reflective plate 30 and at least one light emitting device 40, and the backlight module 1 includes the light emitting plate 10, the light guide plate 20 and the reflective plate 30 in sequence from the keyboard module 9 to the bottom.
The keyboard module 9 comprises a plurality of keys 92. The light emitting plate 10 has a plurality of light emitting areas 11 and a plurality of light shielding areas 12, and each light shielding area 12 is located between two adjacent light emitting areas 11. Specifically, the light exiting areas 11 correspond to the keys 92 on the keyboard module 9, and the light shielding areas 12 correspond to the positions without the keys 92, that is, the light shielding areas 12 are mainly located between two adjacent light exiting areas 11. The light generated by the light emitting element 40 can be projected to the back of the key cap of each key 92 through the light emergent region 11, and the light shielding region 12 is used for avoiding light leakage between the keys 92.
The light guide plate 20 has a first opening 21, and the reflective plate 30 has a reflective surface 31 and a second opening 32. The reflective surface 31 of the reflective plate 30 is connected to the lower surface 22 of the light guide plate 20, and the second opening 32 corresponds to the first opening 21, so that the light emitting element 40 can be accommodated in the first opening 21 and the second opening 32. Specifically, the light emitting assembly 40 includes a circuit board 41 and a plurality of light emitting units 42, and the light emitting units 42 are disposed on the circuit board 41. The circuit board 41 is disposed on a side of the reflection plate 30 opposite to the reflection surface 31, and the light emitting unit 42 is accommodated in a through hole formed by the second opening 32 and the first opening 21. It should be noted that, the number of the first openings 21 and the second openings 32 is not limited in the present invention, and only needs to correspond to each other, so that one first opening 21 and one second opening 32 can form one through hole together. In addition, the light emitting element 40 is accommodated in the first opening 21 and the second opening 32, which means that the light emitting unit 42 of the light emitting element 40 is accommodated in the first opening 21 and the second opening 32. The present invention also does not limit the number of the light emitting units 42, and one or more light emitting units 42 can be accommodated in the through hole formed by the second opening 32 and the first opening 21.
In the present embodiment, the backlight module 1 further includes at least one adhesive layer 50 disposed between the light emitting plate 10 and the light guide plate 20. Fig. 3 is a schematic view of the adhesive layer shown in fig. 2 disposed on the light guide plate, and fig. 4 is a schematic partial cross-sectional view of the light-emitting keyboard shown in fig. 1, with reference to fig. 2, fig. 3 and fig. 4. Preferably, the adhesive layer 50 is also disposed between the light guide plate 20 and the reflective plate 30. That is, the adhesive can be coated on the upper surface 23 and the lower surface 22 of the light guide plate 20 by screen printing to form the adhesive layer 50 of the present embodiment, so that the light guide plate 20 is connected to the light emitting plate 10 and the reflective plate 30 through the adhesive layer 50.
In the embodiment, the adhesive layer 50 includes a plurality of first adhesives 51, and the first adhesives 51 are disposed at intervals corresponding to the two adjacent keys 92. Specifically, the first colloid 51 is disposed at a position corresponding to the position between two adjacent keys 92, and the first colloids 51 are disposed at intervals. That is, a gap is formed between two adjacent first colloids 51, and a first gap 510 is formed between two adjacent first colloids 51. In addition, since the light-emitting plate 10 of the present embodiment has the light-shielding region 12, and the light-shielding region 12 also corresponds to the space between the two adjacent keys 92, the first encapsulant 51 is also disposed at an interval corresponding to the light-shielding region 12 of the light-emitting plate 10. That is, the first encapsulant 51 is disposed at a position corresponding to the light-shielding region 12 of the light-emitting plate 10. In other embodiments, the light-emitting plate 10 may also be a transparent substrate without the light-shielding region 12, and the position of the first encapsulant 51 may directly correspond to the position between the two adjacent keys 92, which is not limited in the present invention.
As shown in fig. 3 and 4, the connection relationship between the light-emitting plate 10 and the light guide plate 20 is taken as an example for explanation, and the light-emitting plate 10 and the light guide plate 20 are connected to each other through the adhesive layer 50. By widely disposing the first colloid 51, air distribution between the light emitting panel 10 and the light guide panel 20 can be reduced. In addition, at a position without the first encapsulant 51, there is a space a (i.e., a position corresponding to the light exit region 11) between the light exit plate 10 and the light guide plate 20, and the space a has air therein. Similarly, a space a is provided between the reflection plate 30 and the lower surface 22 of the light guide plate 20. The first gaps 510 between the first colloids 51 may communicate with the adjacent two spaces a, so that the first gaps 510 may serve as channels for exhausting air. When the user presses the key 92, the space a is simultaneously compressed, and air in the space a can be discharged from the first gap 510. That is, the air in the space a can be exhausted through the first gap 510, so as to achieve the function of air escape.
Preferably, the first colloid 51 is disposed corresponding to the longitudinal light-shielding region 12. Specifically, the backlight module 1 (and the light emitting plate 10 and the light guide plate 20 thereof) of the present embodiment is rectangular, and thus has long sides and short sides. The direction along the long side is referred to herein as the transverse direction; conversely, the direction along the short side is the longitudinal direction. The first glue bodies 51 are disposed corresponding to the light-shielding regions 12 in the longitudinal direction, that is, the first glue bodies 51 correspond to the light-shielding regions 12 between the light-exiting regions 11 in two adjacent columns, so that the first glue bodies 51 are arranged on the light guide plate 20 along the direction of the short side. As shown in fig. 3, the first glue bodies 51 arranged corresponding to the longitudinal light-shielding regions 12 make the first gaps 510 between the first glue bodies 51 face the two short sides of the light guide plate 20, so that the air in the space a can be discharged toward the two short sides of the light guide plate 20 through the first gaps 510.
Preferably, the adhesive layer 50 further includes a plurality of second glue bodies 52 disposed corresponding to the light-shielding regions 12 in the transverse direction, that is, the second glue bodies 52 correspond to the light-shielding regions 12 between the light-emitting regions 11 in two adjacent transverse rows, so that the second glue bodies 52 are arranged on the light guide plate 20 along the direction of the long side. The second glue 52 is disposed to increase the area of the adhesive coating to reduce the area of the space a and reduce the air between the light guide plate 20 and the light emitting plate 10 and the reflective plate 30. However, if the area of the adhesive coating is excessively increased, for example, the adhesive layer 50 is distributed on the entire upper surface 23 (or the lower surface 22) of the light guide plate 20, which may adversely affect the optical effect of light extraction. Therefore, the first encapsulant 51 and the second encapsulant 52 of the present embodiment both correspond to the light-shielding region 12 of the light-emitting plate 10. Preferably, the second colloid 52 is also disposed at intervals corresponding to the lateral light-shielding regions 12, and the second colloid 52 is not connected to the first colloid 51, so as to retain a channel for exhausting air.
Preferably, the adhesive layer 50 further includes an edge glue 53. The edge glue 53 corresponds to the periphery of the upper surface 23 of the light guide plate 20 to enhance the connection between the light guide plate 20 and the light-emitting plate 10, and increase the area of adhesive coating to reduce the air between the light guide plate 20 and the light-emitting plate 10. Similarly, the edge glue 53 may be disposed on the periphery of the lower surface 22 of the light guide plate 20 (not shown) for connecting the light guide plate 20 and the reflective plate 30. In addition, at least one side of the edge glue 53 has a plurality of second gaps 530, and in the present embodiment, the second gaps 530 are disposed corresponding to both short sides of the light guide plate 20. When the air in the space a is exhausted to the edge glue 53 through the first gap 510, the air can be exhausted to the outside of the light guide plate 20 (and the backlight module 1) through the second gap 530. In other embodiments, the arrangement of the first glue 51 and the first gaps 510 may also be adjusted, and the arrangement position of the second gaps 530 of the edge glue 53 is correspondingly adjusted, so that the air in the space a may be exhausted from the long side of the light guide plate 20, which is not limited in the disclosure.
Preferably, the adhesive layer 50 further includes at least one ring-shaped adhesive 54, the number of the ring-shaped adhesive 54 corresponds to the number of the first openings 21 of the light guide plate 20, and the ring-shaped adhesive 54 is disposed corresponding to the edge of the first openings 21. The ring-shaped encapsulant 54 is used to prevent light emitted from the light-emitting unit 42 from leaking from the first opening 21. Preferably, the ring-shaped encapsulant 54 may also extend to the second opening 32 of the reflector 30 to fill the through hole formed by the first opening 21 and the second opening 32, so as to achieve a better effect of avoiding light leakage. In addition, the ring-shaped colloid 54 is not connected to the first colloid 51 and the second colloid 52, and can also be used for keeping a channel for exhausting air.
The light guide plate 20 of the first embodiment is connected to the light emitting plate 10 and the reflective plate 30 by the adhesive layer 50, and in other embodiments, the light emitting plate and the reflective plate may be connected in other manners. Fig. 5 is a schematic partial cross-sectional view of a backlight module 1a applied to a light-emitting keyboard K according to a second embodiment of the present invention, please refer to fig. 5. The backlight module 1a of the second embodiment also includes a light emitting plate 10a, a light guide plate 20a, a reflective plate 30a and a light emitting device (please refer to the light emitting device 40 of the previous embodiment directly). The main structure of the light emitting panel 10a, the light guide panel 20a, the reflective panel 30a and the light emitting device can be referred to the first embodiment. For example, the light-emitting plate 10a has a plurality of light-emitting areas 11a and a plurality of light-shielding areas 12a, and each light-shielding area 12a is located between two adjacent light-emitting areas 11 a. The light guide plate 20a has a first opening (please refer to the first opening 21 of the first embodiment directly), and the reflective plate 30a has a reflective surface 31a and a second opening (please refer to the reflective surface 31 and the second opening 32 of the first embodiment directly).
The difference between the present embodiment and the first embodiment is that a plurality of first connecting portions 50a are disposed between the light-emitting plate 10a and the light guide plate 20a, and the first connecting portions 50a are formed on the connecting surface between the light-emitting plate 10a and the light guide plate 20a by welding. The plurality of first connecting portions 50a are also provided between the light guide plate 20a and the reflection plate 30a, and are formed on the surface of the light guide plate 20a connected to the reflection plate 30a by welding. In the present embodiment, the first connecting portions 50a are also spaced apart corresponding to the light-shielding regions 12 a. That is, the first connection portion 50a is directly formed in the light shielding region 12a by heat or ultrasonic welding, and the light emitting plate 10a and the light guide plate 20a are connected by the first connection portion 50 a.
Similar to the first embodiment, the first connecting portions 50a are disposed at intervals corresponding to the light shielding regions 12a in the longitudinal direction, so that a first gap (please refer to the first gap 510 of the first embodiment directly) is formed between two adjacent first connecting portions 50a, and the first connecting portions 50a are used as air exhaust channels.
In addition, a plurality of second connection portions are further disposed between the light emitting plate 10a and the light guide plate 20a, and the arrangement positions thereof refer to the second encapsulant 52 of the first embodiment, for example, the second connection portions are disposed corresponding to the lateral light shielding regions 12a and are not connected to the first connection portions 50 a. In addition, a side connection portion (please refer to the edge glue 53 of the first embodiment directly) is disposed between the light emitting plate 10a and the light guide plate 20a, and corresponds to the periphery of the upper surface of the light guide plate 20a, and at least one side of the side connection portion has a plurality of second gaps (please refer to the second gaps 530 of the first embodiment directly). In addition, an annular connection portion is disposed between the light emitting plate 10a and the light guide plate 20a (please refer to the annular glue 54 of the first embodiment directly). The annular connecting part is arranged corresponding to the edge of the first opening, and the annular connecting part is not connected with the first connecting part or the second connecting part is not connected with the annular connecting part. In this embodiment, the side connection portion, the annular connection portion, or the second connection portion is formed between the light-emitting plate and the light guide plate in a welding manner, as in the first connection portion. In the first embodiment, the first connecting portion, the side connecting portion, the annular connecting portion, or the second connecting portion may be respectively a rubber body.
In summary, according to the backlight module applied to the light-emitting keyboard of the present invention, the light-emitting plate and the light guide plate are connected to each other through the first adhesive or the first connecting portion, and the first adhesive or the first connecting portion is disposed at an interval corresponding to the two adjacent keys, so that a first gap is formed between the two adjacent first adhesives or the first connecting portions. The first colloid or the first connecting part is widely arranged, so that the air distribution between the light emitting plate and the light guide plate can be reduced. In addition, the first gap can be used as a channel for exhausting air, that is, the air between the light-emitting plate and the light guide plate can be exhausted through the first gap, so as to achieve the function of air escape.
The above detailed description is directed to a preferred embodiment of the present invention, which is not intended to limit the scope of the claims, but rather the present invention is intended to cover all equivalent variations and modifications without departing from the spirit of the present invention.
Claims (12)
1. A backlight module applied to a luminous keyboard, the luminous keyboard comprises a keyboard module and the backlight module, the keyboard module comprises a plurality of keys, the backlight module is arranged on a lower surface of the keyboard module, and the backlight module is characterized by comprising:
a light emitting plate;
a light guide plate having a first opening;
a reflecting plate having a reflecting surface and a second opening, the reflecting surface being connected to a lower surface of the light guide plate, the second opening corresponding to the first opening;
an adhesive layer disposed between the light emitting plate and the light guide plate, the adhesive layer comprising:
the first glue bodies are arranged at intervals corresponding to two adjacent keys, so that a first gap is formed between the two adjacent first glue bodies; and
at least one light emitting assembly is accommodated in the first opening and the second opening.
2. The backlight module of claim 1, wherein the light-emitting plate has a plurality of light-emitting areas and a plurality of light-shielding areas, each light-shielding area is located between two adjacent light-emitting areas, and the first encapsulant is disposed at intervals corresponding to the light-shielding areas.
3. The backlight module of claim 2, wherein the adhesive layer further comprises an edge glue corresponding to a periphery of an upper surface of the light guide plate, and at least one side of the edge glue has a plurality of second gaps.
4. The backlight module of claim 2, wherein the adhesive layer further comprises a ring-shaped adhesive disposed corresponding to the edge of the first opening, and the ring-shaped adhesive is not connected to the first adhesives.
5. The backlight module as claimed in claim 4, wherein the first glue bodies are disposed corresponding to the light-shielding regions, the adhesive layer further comprises a plurality of second glue bodies disposed corresponding to the light-shielding regions, and the second glue bodies are not connected to the annular glue bodies or the first glue bodies.
6. The utility model provides a be applied to backlight module of luminous keyboard, its characterized in that, this luminous keyboard includes a keyboard module and this backlight module, and this keyboard module contains a plurality of buttons, and this backlight module sets up in a lower surface of this keyboard module, and this backlight module contains a light emitting board, a light guide plate and a reflecting plate from this keyboard module down in proper order, and this backlight module still contains at least a light-emitting component, wherein:
the light guide plate is provided with a first opening;
the reflecting plate is provided with a reflecting surface and a second opening, the reflecting surface is connected with the lower surface of the light guide plate, and the second opening corresponds to the first opening; and
the light emitting assembly is accommodated in the first opening and the second opening; the method is characterized in that:
a plurality of first connecting portions are arranged between the light emitting plate and the light guide plate, wherein the first connecting portions are arranged at intervals corresponding to two adjacent keys, so that a first gap is formed between two adjacent first connecting portions, and the first connecting portions are connected with the light emitting plate and the light guide plate.
7. The backlight module of claim 6, wherein the light-emitting plate has a plurality of light-emitting areas and a plurality of light-shielding areas, each light-shielding area is located between two adjacent light-emitting areas, and the first connecting portions are spaced apart from each other corresponding to the light-shielding areas.
8. The backlight module of claim 7, wherein a side connection portion is disposed between the light-emitting plate and the light guide plate, corresponding to a periphery of an upper surface of the light guide plate, and at least one side of the side connection portion has a plurality of second gaps.
9. The backlight module of claim 7, wherein an annular connecting portion is disposed between the light emitting plate and the light guide plate and corresponding to the edge of the first opening, and the annular connecting portion is not connected to the first connecting portions.
10. The backlight module of claim 9, wherein the first connecting portion is disposed corresponding to the light-shielding regions, and a plurality of second connecting portions are disposed between the light-emitting plate and the light guide plate and corresponding to the light-shielding regions, and the second connecting portions are not connected to the annular connecting portion or the first connecting portions.
11. The backlight module of any of claims 7-10, wherein the first connecting portions, the side connecting portions, the ring connecting portions, or the second connecting portions are formed between the light-emitting plate and the light guide plate by welding.
12. The backlight module of any of claims 7-10, wherein the first connecting portions, the side connecting portions, the ring connecting portions, or the second connecting portions are respectively a glue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910122599.9A CN111584282B (en) | 2019-02-19 | 2019-02-19 | Backlight module applied to luminous keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910122599.9A CN111584282B (en) | 2019-02-19 | 2019-02-19 | Backlight module applied to luminous keyboard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111584282A true CN111584282A (en) | 2020-08-25 |
| CN111584282B CN111584282B (en) | 2022-12-30 |
Family
ID=72125945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910122599.9A Active CN111584282B (en) | 2019-02-19 | 2019-02-19 | Backlight module applied to luminous keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111584282B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201780913U (en) * | 2010-03-31 | 2011-03-30 | 苏州达方电子有限公司 | Luminous keyboard |
| CN202434392U (en) * | 2011-12-05 | 2012-09-12 | 深圳市汇创达科技有限公司 | Hot-pressing light guide film module for computer keyboard |
| CN202695242U (en) * | 2012-07-19 | 2013-01-23 | 厦门鑫铭科技有限公司 | Membrane panel adhered to touch switch or membrane switch |
| CN104091713A (en) * | 2014-03-18 | 2014-10-08 | 苏州达方电子有限公司 | Backlight device and light-emitting keyboard |
| CN204062674U (en) * | 2014-08-01 | 2014-12-31 | 闳晖实业股份有限公司 | Backlight module |
| CN204084009U (en) * | 2014-08-26 | 2015-01-07 | 精元电脑股份有限公司 | Backlight module and illuminated keyboard |
| CN204088139U (en) * | 2014-08-06 | 2015-01-07 | 群光电能科技股份有限公司 | The light shield layer structure of keyboard back light module |
| CN104952659A (en) * | 2015-06-16 | 2015-09-30 | 苏州达方电子有限公司 | Backlight module and illuminating keyboard |
| CN105321758A (en) * | 2014-05-28 | 2016-02-10 | 群光电能科技股份有限公司 | Structure of keyboard backlight module |
-
2019
- 2019-02-19 CN CN201910122599.9A patent/CN111584282B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201780913U (en) * | 2010-03-31 | 2011-03-30 | 苏州达方电子有限公司 | Luminous keyboard |
| CN202434392U (en) * | 2011-12-05 | 2012-09-12 | 深圳市汇创达科技有限公司 | Hot-pressing light guide film module for computer keyboard |
| CN202695242U (en) * | 2012-07-19 | 2013-01-23 | 厦门鑫铭科技有限公司 | Membrane panel adhered to touch switch or membrane switch |
| CN104091713A (en) * | 2014-03-18 | 2014-10-08 | 苏州达方电子有限公司 | Backlight device and light-emitting keyboard |
| CN105321758A (en) * | 2014-05-28 | 2016-02-10 | 群光电能科技股份有限公司 | Structure of keyboard backlight module |
| CN204062674U (en) * | 2014-08-01 | 2014-12-31 | 闳晖实业股份有限公司 | Backlight module |
| CN204088139U (en) * | 2014-08-06 | 2015-01-07 | 群光电能科技股份有限公司 | The light shield layer structure of keyboard back light module |
| CN204084009U (en) * | 2014-08-26 | 2015-01-07 | 精元电脑股份有限公司 | Backlight module and illuminated keyboard |
| CN104952659A (en) * | 2015-06-16 | 2015-09-30 | 苏州达方电子有限公司 | Backlight module and illuminating keyboard |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111584282B (en) | 2022-12-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4728067B2 (en) | Seat switch module | |
| JP4926762B2 (en) | Luminescent sheet module | |
| TWI501276B (en) | Luminous keyboard device | |
| US8714850B2 (en) | Backlight module and lighting keyboard | |
| US20240006134A1 (en) | Backlight module and luminous keyboard using the same | |
| JP2007324100A (en) | Sheet switch module | |
| JP2011238579A (en) | Luminous keyboard | |
| TW201501161A (en) | Luminous keyboard device | |
| US11158470B2 (en) | Luminous key | |
| US7232969B1 (en) | Keypad | |
| TWM482759U (en) | Light leakage proof microstructure for through hole of backlight module of keyboard | |
| US10948651B1 (en) | Keyboard backlight module and manufacturing method thereof | |
| CN107196634B (en) | Touch panel assembly and portable electronic device | |
| KR101142389B1 (en) | Input device and sheet having dome for input device | |
| TW201320135A (en) | Illuminating keyboard | |
| CN111584282B (en) | Backlight module applied to luminous keyboard | |
| US8536476B2 (en) | Illuminated keyboard | |
| TW201820364A (en) | Key structure | |
| JPWO2008072666A1 (en) | Illuminated input device | |
| US20120154180A1 (en) | Light guide structure, keypad structure including the same, and method of fabricating the same | |
| JPH06275169A (en) | Keyboard switch | |
| US20090065335A1 (en) | Multi-functional keypad module for a mobile phone | |
| US20210119077A1 (en) | Reflective display | |
| JP2008177155A (en) | Operation switch structure | |
| TW201913704A (en) | Luminous keyboard |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |