CN119108223A - Illuminated keyboard - Google Patents
Illuminated keyboard Download PDFInfo
- Publication number
- CN119108223A CN119108223A CN202310677887.7A CN202310677887A CN119108223A CN 119108223 A CN119108223 A CN 119108223A CN 202310677887 A CN202310677887 A CN 202310677887A CN 119108223 A CN119108223 A CN 119108223A
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- China
- Prior art keywords
- light
- module
- circuit structure
- light emitting
- circuit
- 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.)
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- 239000002184 metal Substances 0.000 claims abstract description 63
- 229910052751 metal Inorganic materials 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 26
- 238000003825 pressing Methods 0.000 claims description 10
- 238000007731 hot pressing Methods 0.000 abstract description 9
- 239000010410 layer Substances 0.000 description 32
- 239000010409 thin film Substances 0.000 description 14
- 230000017525 heat dissipation Effects 0.000 description 13
- 238000007906 compression Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 239000004642 Polyimide Substances 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229920001721 polyimide Polymers 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- -1 but not limited to Substances 0.000 description 3
- 239000010408 film Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000001795 light effect Effects 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
-
- 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
- H01H13/82—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 contact space venting means
-
- 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
- H01H13/86—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 the casing, e.g. sealed casings or casings reducible in size
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The invention provides a luminous keyboard, which comprises a metal bottom plate, a luminous module and an insulating hot pressing sheet. The metal base plate has an upper surface and a lower surface opposite to the upper surface. The light-emitting module comprises a circuit structure and a plurality of light-emitting elements, wherein the circuit structure is provided with an upper surface and a lower surface which are opposite, and comprises a substrate and a circuit formed on the substrate. The light emitting elements are electrically connected to the circuit. The insulating hot pressing sheet is arranged between the circuit structure and the metal bottom plate, wherein the circuit structure is attached to the upper surface or the lower surface of the metal bottom plate through the insulating hot pressing sheet.
Description
Technical Field
The present invention relates to a light-emitting keyboard, and more particularly to a thinned light-emitting keyboard with excellent heat dissipation.
Background
With the development of information industry, the popularity of electronic products such as computers is rapidly increasing, wherein a keyboard is one of the most important and convenient input devices. The development of keyboards is mainly related to convenience of use. In recent years, in order to smoothly use a keyboard in the case of insufficient light or to enhance the beauty of the keyboard, a keyboard capable of emitting light has been developed.
The basic architecture of the luminous keyboard is a stack of multi-layer structures such as a keycap, a keyboard bottom plate, a backlight plate, a circuit board and the like. However, as consumers demand products, electronic products continue to develop in a reduced size to meet the demands of consumers for light and slim portability, the architecture of the light-emitting keyboard needs to be further improved to reduce the overall thickness of the keyboard. On the other hand, as the thickness of the keyboard is reduced, the risk of overheating is increased, so how to improve the heat dissipation efficiency is also one of the important considerations for keyboard design.
Disclosure of Invention
Problems to be solved by the invention
The prior art luminous keyboard has the problems of overhigh overall thickness and poor heat dissipation.
Technical means for solving the problems
The main objective of the present invention is to provide a luminous keyboard, which can effectively reduce the thickness of the keyboard and has better heat dissipation.
In order to achieve the above object, according to one embodiment of the present invention, a light-emitting keyboard comprises a metal base plate having an upper surface and a lower surface opposite to each other, a light-emitting module having a circuit structure having an upper surface and a lower surface opposite to each other and including a substrate and a circuit formed on the substrate, a plurality of light-emitting elements electrically connected to the circuit, and an insulating thermo-compression sheet disposed between the circuit structure and the metal base plate, wherein the circuit structure is bonded to the upper surface or the lower surface of the metal base plate through the insulating thermo-compression sheet.
According to another embodiment, the present invention provides the light-emitting keyboard as described above, wherein the light-emitting keyboard further comprises an external circuit board electrically connected to the circuit, and the circuit obtains power from outside through the external circuit board and transmits the power to the light-emitting element, wherein the total thickness of the circuit structure and the insulating thermo-compression sheet is lower than the thickness of the external circuit board.
According to another embodiment, the present invention provides the above-mentioned light-emitting keyboard, wherein the light-emitting keyboard further comprises a reflective layer on the substrate and covering the circuit, wherein the total thickness of the circuit structure, the insulating thermo-compression sheet and the reflective layer is lower than the thickness of the external circuit board.
According to another embodiment, the invention provides the light-emitting keyboard, wherein the metal base plate is located above the light-emitting module, the light-emitting keyboard further comprises a key module disposed above the metal base plate, and a backlight module disposed below the circuit structure, wherein the backlight module is configured to guide the light emitted by the light-emitting elements to irradiate towards the key module, and the light-emitting elements are disposed on the lower surface of the circuit structure and embedded in the backlight module.
According to another embodiment, the invention provides the light-emitting keyboard, wherein the metal bottom plate is located below the circuit structure, the light-emitting keyboard further comprises a key module arranged above the light-emitting module, and a backlight module arranged below the metal bottom plate and used for guiding light emitted by the light-emitting elements to irradiate towards the direction of the key module, wherein the light-emitting elements are arranged on the lower surface of the circuit structure and embedded into the backlight module.
According to another embodiment, the invention provides the light-emitting keyboard, wherein the metal bottom plate is arranged below the light-emitting module, the light-emitting keyboard further comprises a key module arranged above the circuit structure, and the plurality of light-emitting elements are arranged on the upper surface of the circuit structure and configured to emit light rays towards the direction of the key module.
According to another embodiment, the present invention provides the above-mentioned light-emitting keyboard, wherein the key module includes a plurality of key units, and positions of the plurality of light-emitting elements respectively correspond to positions of the plurality of key units.
According to another embodiment, the present invention provides the light-emitting keyboard as described above, wherein the reflective layer is white ink.
According to another embodiment, the present invention provides the light-emitting keyboard as described above, wherein the metal base plate includes a plurality of holes, and positions of the plurality of light-emitting elements correspond to positions of the plurality of holes.
Efficacy against the prior art
The light emitting module of the prior art is generally configured with a general flexible circuit board having upper and lower protective layers to control the light emitting module. The luminous keyboard uses the insulating hot pressing sheet to directly attach the base material with the circuit on the insulating hot pressing sheet to the metal bottom plate, avoids the use of a common soft circuit board, can effectively reduce the whole thickness of the keyboard and achieves better heat dissipation effect.
In addition, the circuit on the substrate is covered by the reflecting layer, so that the light reflection quantity is improved, and the luminous efficiency of the luminous keyboard is improved. In addition, the luminous keyboard can further improve the heat dissipation benefit and/or improve the light effect by arranging the luminous element at the hole breaking position of the metal bottom plate.
Further features and advantages of the invention will emerge from the following description of exemplary embodiments of the invention and the claims.
Drawings
The invention will be explained in more detail below with reference to exemplary embodiments shown in the drawings, in which:
FIG. 1 is a schematic partial cross-sectional view of a light-emitting keyboard according to a first embodiment of the present invention;
FIG. 2 is a partially exploded perspective view of a light emitting keyboard according to a first embodiment of the present invention;
FIG. 3 is a schematic partial cross-sectional view of a light-emitting keyboard according to a second embodiment of the present invention;
FIG. 4 is a schematic partial cross-sectional view of a light-emitting keyboard according to a third embodiment of the present invention;
FIG. 5 is a partially exploded perspective view of a light emitting keyboard according to a third embodiment of the present invention;
FIG. 6 is a schematic partial cross-sectional view of a light-emitting keyboard according to a fourth embodiment of the present invention, and
Fig. 7 is a partially exploded perspective view of a light emitting keyboard according to a fourth embodiment of the present invention.
[ Symbolic description ]
1. Key module
11. Key unit
12. Connection structure
2. Thin film circuit board
3. Metal bottom plate
4. Insulating hot pressing sheet
5. Light emitting module
50. Circuit structure
51. Substrate material
52. Circuit arrangement
53. Light-emitting element
54. Reflective layer
6. Backlight module
7. External circuit board
8. Broken hole
100. Luminous keyboard
100' Luminous keyboard
200. Luminous keyboard
300. Luminous keyboard
A1 Lower surface of metal bottom plate
A2 Upper surface of metal bottom plate
B1 Lower surface of circuit structure
B2 Upper surface of circuit structure
Detailed Description
Preferred embodiments of the luminous keyboard of the present invention will be described in detail below with reference to the accompanying drawings, wherein like elements are designated by like reference numerals. It is to be understood that the following disclosure provides many different embodiments, or examples, for implementing different aspects of the disclosure. These various embodiments or examples are provided by way of illustration only and are not intended to limit the invention. Those skilled in the art, having benefit of this disclosure, will appreciate that the invention can be practiced with other embodiments that depart from the spirit and scope of the invention as disclosed herein. Those skilled in the art may modify and/or change the specific embodiments for carrying out the present invention based on different embodiments and applications without departing from the spirit and scope thereof.
The invention provides an improved luminous keyboard which can reduce the overall thickness of the keyboard and achieve better heat dissipation effect. Fig. 1 and fig. 2 are a schematic partial cross-sectional view and a schematic partial exploded perspective view, respectively, of a light emitting keyboard 100 according to a first embodiment of the present invention. It should be appreciated that some prior art structures and elements are not depicted to avoid obscuring the invention, and that the drawings are merely to illustrate and describe features of the invention and are not representative of the actual size or number of structures or elements.
First embodiment
Referring to fig. 1 and 2, the light-emitting keyboard 100 of the present invention includes a key module 1, a thin film circuit board 2, a metal bottom plate 3, an insulating thermo-compression sheet 4, a light-emitting module 5, a backlight module 6, and an external circuit board 7, wherein the key module 1 includes a plurality of key units 11 and a plurality of corresponding connection structures 12, and the light-emitting module 5 includes a circuit structure 50, at least one light-emitting element 53, and a reflective layer 54.
The key unit 11 is exposed on the surface of the light-emitting keyboard 100 for being pressed by a user. The connection structure 12 is disposed between the key unit 11 and the metal base plate 3, and is configured such that the key unit 11 can reciprocate up and down relative to the metal base plate 3. The key module 1 further includes a plurality of restoring members (not shown) corresponding to the key units 11 respectively to provide a restoring force for restoring the key units 11 after being pressed, wherein the restoring members may be rubber domes (rubber dome), metal spring plates, springs or magnetic elements. The thin film circuit board 2 is disposed below the key unit 11 and includes a plurality of key switches (not shown) for generating key signals corresponding to the pressing of the key unit 11. The operation and connection between the key module 1 and the thin film circuit board 2 are substantially the same as those of the prior art, and are not described herein.
The metal bottom plate 3 is disposed below the thin film circuit board 2 for supporting the key unit 11, the connection structure 12 and the thin film circuit board 2, and is made of metal materials such as, but not limited to, iron, copper, nickel, stainless steel, etc. The metal chassis 3 has a lower surface A1 and an upper surface A2 opposite to each other, and in the embodiment shown in fig. 1 and 2, the upper surface A2 faces upward the thin film circuit board 2.
The light emitting module 5 is disposed below the metal base plate 3. The circuit structure 50 of the light emitting module 5 has a lower surface B1 and an upper surface B2 opposite to each other, and includes a substrate 51 and a circuit 52. The substrate 51 may be a polymer resin film, for example, but not limited to, made of Polyimide (PI), polyethylene terephthalate (PET), or polyethylene naphthalate (PEN). In a preferred embodiment, the substrate 51 is a Polyimide (PI) film having a thickness of about 1 micrometer (μm) to about 50 micrometers (μm). As shown in fig. 1, the circuit 52 may be formed on the lower surface of the substrate 51 by printing or etching, and the material may be copper, silver or other metals. The light emitting device 53 may be, but is not limited to, a light emitting diode, which is disposed on the substrate 51 and electrically connected to the circuit 52.
The insulating thermal pressing sheet 4 is disposed between the upper surface B2 of the circuit structure 50 and the lower surface A1 of the metal base plate 3, so as to attach the upper surface B2 of the circuit structure 50 to the lower surface A1 of the metal base plate 3, and the insulating property of the insulating thermal pressing sheet 4 can further prevent the circuit 52 from being electrically connected with the metal base plate 3.
In this embodiment, the reflective layer 54 may be printed, coated, evaporated, adhered or otherwise disposed on a portion of the lower surface of the substrate 51, and the reflective layer 54 covers the circuit 52 to further reflect the light emitted by the light emitting element 53, thereby increasing the light extraction efficiency. In this embodiment, the reflective layer 54 may be a light-colored ink layer with a reflective effect, such as white, silver, light gray, or a film or coating with a reflective property, which is not limited in the present invention. It should be noted that, since the reflective layer 54 covers the circuit 52, the light emitted by the light emitting element 53 can be further prevented from changing the light color through the circuit 52, and taking the circuit 52 as an example, if the reflective layer 54 does not cover the circuit 52, the light emitted by the light emitting element 53 may have red copper color through the copper circuit, and the above-mentioned problem can be solved by the reflective layer 54 of the present embodiment. In addition, reflective layer 54 is an optional element, and the present invention encompasses other examples in which a reflective layer is not used.
The backlight module 6 is disposed below the light emitting module 5. The backlight module 6 includes, for example, a light shielding sheet, a light guiding plate, a reflective sheet, and a receiving space for receiving the light emitting device 53, and the principle and structure thereof are the same as those of the prior art, and are not repeated herein. In the first embodiment, the light emitting element 53 is disposed on the lower surface B1 of the circuit structure 50 in an inverted manner (light is emitted to the backlight module 6), and one end of the light emitting element is electrically connected to the circuit 52 and the other end of the light emitting element is embedded in the backlight module 6. The backlight module 6 is configured to guide light emitted from the light emitting element 53 to be irradiated toward the key unit 11, so that the keyboard 100 generates a light emitting effect.
Referring to fig. 2, the light emitting keyboard 100 further includes an external circuit board 7 electrically connected to the circuit 52, and configured to receive an external power source or to connect to an external electronic device (e.g., a host computer, etc.). The external circuit board 7 may be connected to the wiring 52 by thermal fusion welding. The wiring 52 obtains power from the outside via the external circuit board 7, and then transmits the power to the light emitting element 53 to cause it to emit light. In the present embodiment, the external circuit board 7 is a flexible circuit board, and other materials, such as a printed circuit board, can be selected according to the requirement during the actual implementation, and the invention is not limited thereto. The external circuit board 7 includes an upper protective layer, a circuit board body (which is composed of a polyimide substrate and copper etching lines, for example), and a lower protective layer laminated to each other, and has a thickness of about 0.2mm. In contrast, the substrate 51 and the wiring 52 of the present invention are bonded to the metal base plate 3 by the insulating thermo-compression sheet 4. The substrate 51 and the insulating thermal pad 4 are disposed above the circuit 52, and the backlight module is disposed below the circuit 52, so that no additional upper and lower protection layers are required. In this embodiment, the thicknesses of the substrate 51, the wiring 52, the reflection layer 54, and the insulating thermal compression sheet 4 of the present invention total only about 0.07mm to 0.08mm. In embodiments where the reflective layer 54 is not used, the thickness of the substrate 51, the traces 52 and the insulating thermal pad 4 will be lower. As can be seen from the above, the total thickness of the substrate 51, the circuit 52, the insulating thermal pad 4 and the optional reflective layer 54 is lower than the thickness of the external circuit board 7, so as to effectively improve the thickness of the light-emitting keyboard 100.
Based on the above, compared with the conventional flexible circuit board using upper and lower protective layers, the thickness of the flexible circuit board is about 0.2mm, and the present invention uses the insulating thermal pressing sheet 4 to attach the circuit structure 50 to the metal base plate 3, so that the overall thickness of the keyboard can be reduced and the manufacturing cost can be reduced. In addition, since the circuit structure 50 and the light-emitting element 53 are attached to the metal base plate 3 only through the insulating thermal pressing sheet 4, the distance between the circuit 52 and the light-emitting element 53 and the metal base plate 3 can be effectively shortened, and the heat energy generated by the circuit 52 and the light-emitting element 53 can be more effectively transferred to the metal base plate 3, so that a better heat dissipation effect can be achieved.
Second embodiment
Fig. 3 is a schematic partial cross-sectional view of a light-emitting keyboard 100' according to a second embodiment of the present invention, which is substantially the same as the structure of the light-emitting keyboard 100 of the first embodiment, and the same points are not repeated. The first and second embodiments are different in that the light emitting element 53 of the light emitting keyboard 100' is disposed at the hole 8 of the metal base plate 3 to further improve the heat dissipation efficiency. Preferably, the hole 8 may be a structural hole or a dustproof hole below the key unit 11, and the dustproof hole is disposed below the key switch corresponding to the thin film circuit board 2, so as to prevent abnormal triggering of the key switch caused by accumulation of dust or foreign matters below the key switch. It should be noted that, in the present embodiment, the light-emitting keyboard 100' further includes a plurality of resetting members, the plurality of resetting members are light-permeable rubber domes (not shown), the rubber domes are disposed corresponding to the key switches and cover the broken holes 8, generally, the brightness around the light-emitting element 53 is higher, the light emitted by the light-emitting element 53 can be diffused by the rubber domes, so that the light around the light-emitting element 53 is uniform and soft, and therefore, the arrangement of the light-emitting element 53 at the dustproof hole can not only increase the heat dissipation effect, but also enhance the light diffusion to further improve the light efficiency.
Third embodiment
Fig. 4 and fig. 5 are a schematic cross-sectional view and an exploded perspective view of a light-emitting keyboard 200 according to a third embodiment of the present invention, which are different from the first embodiment in the relative positional relationship of the layers of the metal chassis 3, the light-emitting module 5, and the like. In the third embodiment, the circuit structure 50 of the light emitting module 5 is located above the metal base plate 3. In detail, in the third embodiment, the components of the light-emitting keyboard 200 are arranged in the order of the key unit 11, the thin film circuit board 2, the substrate 51, the circuit 52, the reflective layer 54, the insulating thermo-compression sheet 4, the metal chassis 3 and the backlight module 6 from top to bottom. In this embodiment, the same elements will be denoted by the same reference numerals, and the same technical features will not be repeated.
Referring to fig. 4 and 5 together, the upper surface A2 of the metal base plate 3 faces upward toward the thin film circuit board 2. The circuit structure 50 is disposed above the metal base plate 3, and the insulating thermal pressing sheet 4 is disposed between the lower surface B1 of the circuit structure 50 and the upper surface A2 of the metal base plate 3. The wiring structure 50 is attached to the upper surface A2 of the metal base plate 3 by the insulating hotpressing sheet 4.
In this embodiment, the reflective layer 54 is formed on the lower surface B1 of the wiring structure 50 and covers the wiring 52. The reflective layer 54 is a selective element, and the present invention also includes embodiments without a reflective layer 54. In another embodiment, the insulating thermal pad 4 is attached so as to avoid the reflective layer 54 (for example, the insulating thermal pad 4 is formed in a dot shape or a lattice shape). The backlight module 6 is disposed below the lower surface A1 of the metal chassis 3. In this embodiment, the light emitting element 53 is disposed on the lower surface B1 of the circuit structure 50 in an inverted manner (light is emitted to the backlight module 6), and is electrically connected to the circuit 52 and is embedded into the accommodating space of the backlight module 6. In this embodiment, the light emitting element 53 penetrates through the metal base plate 3 and is embedded into the accommodating space of the backlight module 6. The backlight module 6 is configured to direct light emitted from the light emitting element 53 to be irradiated toward the key unit 11. In this embodiment, the light emitting element 53 is disposed at the hole 8 of the metal base plate 3 to enhance heat dissipation and/or improve light efficiency, but the invention is not limited thereto, and the light emitting element 53 may be disposed at other positions of the metal base plate 3.
In another embodiment, the circuit 52 of the third embodiment can be combined with the upper thin film circuit board 2, so that the substrate 51 (because the existing thin film circuit board 2 is supported) can be omitted even if the circuit 52 and the upper thin film circuit board 2 are combined into a multi-layered circuit board structure. Then, the multi-layer circuit board structure is attached to the upper surface A2 of the metal base plate 3 by the insulating hotpressing sheet 4.
Fourth embodiment
Fig. 6 and fig. 7 are a schematic partial cross-sectional view and an exploded perspective view, respectively, of a light emitting keyboard 300 according to a fourth embodiment of the present invention. In the fourth embodiment, the circuit structure 50 of the light emitting module 5 is located above the metal base plate 3. In detail, in the fourth embodiment, the elements of the light-emitting keyboard 200 are arranged in the order of the key unit 11, the thin film circuit board 2, the reflective layer 54, the circuit 52, the substrate 51, the insulating thermal pad 4, and the metal chassis 3 from top to bottom. In this embodiment, the same elements will be denoted by the same reference numerals, and the same technical features will not be repeated.
Referring to fig. 6 and 7 together, the circuit structure 50 is placed over the metal base plate 3 and the lower surface B1 of the circuit structure 50 is bonded to the upper surface A1 of the metal base plate 3 using the insulating thermo-compression sheet 4. Unlike the light emitting keyboard 200, the light emitting elements 53 of the light emitting keyboard 300 are not disposed on the line structure 50 in an upside-down manner, but are disposed on the upper surface B2 of the line structure 50 and emit light upward toward the key unit 11. A corresponding light emitting element 53 is disposed under each key unit 11, so that the backlight module 6 can be omitted. In other embodiments, a plurality of key units 11 may correspond to one light emitting element 53, or one key unit 11 may correspond to a plurality of light emitting elements 53. The reflective layer 54 is a selective element, and the present invention also includes embodiments without a reflective layer 54.
As can be seen from the above detailed description of the specific embodiments of the present invention, the light-emitting keyboard of the present invention uses the insulating hot pressing sheet to attach the substrate with the circuit structure formed on the surface to the metal base plate, so as to replace the disadvantage of the prior art that the thickness of the flexible circuit board is high due to the upper and lower protection layers, and achieve the purpose of reducing the thickness of the keyboard. In addition, because the distance between the circuit structure and the light-emitting element and the metal bottom plate is shortened, a better heat dissipation effect can be achieved. In addition, the luminous keyboard of the invention covers the circuit structure by printing or coating the light-colored reflecting layer on the base material, thereby improving the light reflection efficiency and further improving the whole light output. On the other hand, the luminous keyboard of the invention further improves the heat dissipation benefit and/or improves the light effect by arranging the luminous element at the hole breaking position of the metal bottom plate.
While preferred embodiments of the invention have been disclosed herein, it is to be understood that the foregoing embodiments and features have been provided by way of example only and are not limiting of the invention. Many variations and substitutions may be made by one having ordinary skill in the art without departing from the invention. Therefore, the invention should be construed broadly to cover all changes, modifications and alternatives falling within the spirit and scope of the claims.
Claims (9)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310677887.7A CN119108223A (en) | 2023-06-08 | 2023-06-08 | Illuminated keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310677887.7A CN119108223A (en) | 2023-06-08 | 2023-06-08 | Illuminated keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119108223A true CN119108223A (en) | 2024-12-10 |
Family
ID=93709019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310677887.7A Pending CN119108223A (en) | 2023-06-08 | 2023-06-08 | Illuminated keyboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119108223A (en) |
-
2023
- 2023-06-08 CN CN202310677887.7A patent/CN119108223A/en active Pending
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