CN213905210U - Luminous keyboard backlight assembly and luminous keyboard - Google Patents
Luminous keyboard backlight assembly and luminous keyboard Download PDFInfo
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- CN213905210U CN213905210U CN202022722030.7U CN202022722030U CN213905210U CN 213905210 U CN213905210 U CN 213905210U CN 202022722030 U CN202022722030 U CN 202022722030U CN 213905210 U CN213905210 U CN 213905210U
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Abstract
The application provides a luminous keyboard backlight assembly and a luminous keyboard. The luminous keyboard backlight component comprises a metal plate with a plurality of hollow holes, a keycap mounting plate with a plurality of keycap mounting holes, and a backlight film group; the backlight film group comprises a transparent base film, an indium tin oxide circuit arranged in the transparent base film and a plurality of light-emitting devices electrically connected to the indium tin oxide circuit; the metal plate, the transparent base film and the keycap mounting plate are sequentially stacked, and the plurality of light-emitting devices are accommodated in the hollow holes. The luminous keyboard backlight component and the luminous keyboard have the advantages of being few in component number, simple in structure, small in assembly accumulated deviation, small in power consumption, light and thin in design and the like.
Description
Technical Field
The application belongs to the technical field of backlight devices, and particularly relates to a light-emitting keyboard backlight assembly and a light-emitting keyboard.
Background
In the prior art, a backlight light source of a light-emitting keyboard is generally a side-emitting LED light source. Based on the LED light source of the side-emitting light, the corresponding existing backlight assembly has the manufacturing method that: independently manufacturing a white reflector plate; manufacturing a light guide plate independently, and manufacturing light guide points on the light guide plate; independently manufacturing a shading film; independently manufacturing a plurality of flexible circuit strips and respectively mounting resistors and LEDs; the manufactured light guide plate is attached to the upper side of the white reflector plate, the shading film is attached to the reflector plate, the FPC strip attached with the LEDs is assembled to the position, below the reflector plate, of the opening lamp, and testing is conducted after the FPC strip is assembled.
The LED light source adopting side light emitting and the backlight assembly manufactured based on the light source have the following technical defects:
1. the backlight assembly has a large number of components and complicated assembly procedures, so that the accumulated assembly deviation is large and the assembly efficiency is low;
the resistors and the LEDs are attached to the FPC strip, so that the resistors need to be considered in circuit design of the backlight assembly, and specific circuits including the resistors are manufactured to meet use requirements, and under the commonly used voltage of 5V, the circuits including the resistors have large current and power, so that the power consumption is large;
3. due to the adoption of a plurality of FPC strips and LED light sources emitting light from the side faces, the overall backlight brightness is low, the uniformity of the backlight visual brightness of the keyboard is poor, and if the structure has larger square holes or round holes, the anisotropic structures can easily block the light source transmission, so that the brightness and the uniformity can not meet the requirements;
4. the thickness of the product obtained by the method is generally between 0.45mm and 0.55mm at the position where the FPC is attached, and the thinnest position where the lamp is not attached can only be 0.2mm, so that the thickness of the whole product is thicker, and the light and thin design cannot be realized.
Disclosure of Invention
An object of the embodiments of the present application is to provide a light-emitting keyboard backlight assembly, so as to solve the technical problems of large accumulated assembly deviation, large power consumption and incapability of realizing light and thin of the light-emitting keyboard backlight assembly in the prior art.
In order to achieve the purpose, the technical scheme adopted by the application is as follows: the backlight assembly comprises a metal plate with a plurality of hollow holes, a key cap mounting plate with a plurality of key cap mounting holes, and a backlight film group;
the backlight film group comprises a transparent base film, an indium tin oxide circuit arranged in the transparent base film and a plurality of light-emitting devices electrically connected to the indium tin oxide circuit;
the metal plate, the transparent base film and the keycap mounting plate are sequentially stacked, and the plurality of light-emitting devices are accommodated in the hollow holes.
In one embodiment, the electrical connection relationship between the light emitting devices and the ito line is as follows:
two of the light emitting devices are connected in series to form a series line, and a plurality of the series lines are connected in parallel.
In one embodiment, the light-emitting keyboard backlight assembly further comprises a colloid, the light-emitting device is pasted on the transparent base film, the colloid coats the surface of the light-emitting device, which is exposed out of the transparent base film, and the edge of the colloid is glued to the transparent base film.
In one embodiment, phosphor particles are disposed within the gel.
In one embodiment, the light emitting device is a light emitting diode chip.
In one embodiment, the light emitting device is a front-emission type diode chip.
In one embodiment, a projected area of the hollowed-out hole in the thickness direction of the metal plate is larger than a projected area of the light-emitting device in the thickness direction of the metal plate.
In one embodiment, the hollowed-out hole comprises a profiled hole.
In one embodiment, the metal plate is an iron plate.
Compared with the prior art, the luminous keyboard backlight assembly that this application provided has:
firstly, the light-emitting keyboard backlight assembly adopts the indium tin oxide circuit built in the transparent base film to replace a plurality of FPC strips used for arranging conducting circuits in the prior art, a plurality of light-emitting devices are attached to the transparent base film, and the arrangement of a light guide plate is cancelled, so that the structure of the backlight assembly is simplified, the number of components of the backlight assembly is small, the assembly process is simplified and speeded, the accumulated assembly deviation is small, and the assembly efficiency is improved;
secondly, the luminous keyboard backlight assembly cancels the resistance of the existing backlight assembly, the design of an indium tin oxide circuit does not need to consider the resistance, and the luminous devices can be connected in parallel after being connected in series two by two, and due to the change of the circuit design mode, under the commonly used voltage of 5V, the changed circuit has small current and power and further has smaller power consumption;
the light-emitting device is accommodated in the hollow hole of the metal plate, the light-emitting device does not occupy the thickness of the backlight assembly, the overall thickness of the backlight assembly approximately depends on the metal plate and the key cap mounting plate, the backlight assembly can be thinner, and the light and thin design of the backlight assembly is realized to the greatest extent;
and fourthly, the indium tin oxide circuit and the patches of the light-emitting devices are manufactured by the same supplier, so that the yield is well controlled.
It is also an object of the present application to a light-emitting keyboard comprising a light-emitting keyboard backlight assembly as described above.
The beneficial effect that the luminous keyboard that this application provided compares in prior art is the same as the luminous keyboard backlight unit that this application provided compares in prior art's beneficial effect, and this is no longer repeated here.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic view of a metal plate provided in an embodiment of the present application;
fig. 2 is a schematic diagram of a backlight module according to an embodiment of the present disclosure;
FIG. 3 is a schematic view of a key cap mounting plate provided by an embodiment of the present application;
fig. 4 is an ito trace provided in accordance with an embodiment of the present invention.
Wherein, in the figures, the respective reference numerals:
100-a metal plate; 200-backlight film group; 300-key cap mounting plate;
101-hollow holes;
201-transparent base film; 202-a light emitting device;
301-key cap mounting hole.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.
The light-emitting keyboard backlight assembly and the light-emitting keyboard provided by the embodiment of the application are now described.
Referring to fig. 1 to 3, the light-emitting keyboard backlight assembly according to the embodiment of the present disclosure includes a metal plate 100 having a plurality of hollow holes 101, a key cap mounting plate 300 having a plurality of key cap mounting holes 301, and a backlight module 200.
Among them, the metal plate 100 is preferably an iron plate.
The hollow holes 101 in the metal plate 100 may include a regular-shaped hole structure and/or an irregular-shaped hole structure, and the irregular-shaped hole structure is a special-shaped hole.
In the embodiment of the present application, the hollow holes 101 preferably include a regular-shaped hole structure and/or an irregular-shaped hole structure.
Wherein, the pore structure of regular shape is preferably circular hole, and the pore structure of irregular shape extends for some length along the width direction of metal sheet.
The projection area of the hollow hole 101 along the thickness direction of the metal plate 100 is larger than the projection area of the light emitting device 202 along the thickness direction of the metal plate 100, so as to adjust the position of the light emitting device 202 relative to the hollow hole 101.
Referring to fig. 2, in the embodiment of the present disclosure, the backlight module includes a transparent base film 201, an ito line disposed inside the transparent base film 201, and a plurality of light emitting devices 202 electrically connected to the ito line.
Wherein a plurality of light emitting devices 202 are sequentially and intermittently mounted along the surface of the transparent base film 201.
In the embodiment of the present application, the metal plate 100, the transparent base film 201, and the key cap mounting plate 300 are sequentially stacked, and the plurality of light emitting devices 202 are accommodated in the hollow holes 101.
Compared with the prior art, the luminous keyboard backlight assembly that this application provided has:
firstly, the light-emitting keyboard backlight assembly adopts the indium tin oxide circuit built in the transparent base film to replace a plurality of FPC strips used for arranging conducting circuits in the prior art, a plurality of light-emitting devices are attached to the transparent base film, and the arrangement of a light guide plate is cancelled, so that the structure of the backlight assembly is simplified, the number of components of the backlight assembly is small, the assembly process is simplified and speeded, the accumulated assembly deviation is small, and the assembly efficiency is improved;
secondly, the luminous keyboard backlight assembly cancels the resistance of the existing backlight assembly, the design of an indium tin oxide circuit does not need to consider the resistance, and the luminous devices can be connected in parallel after being connected in series two by two, and due to the change of the circuit design mode, under the commonly used voltage of 5V, the changed circuit has small current and power and further has smaller power consumption;
the light-emitting device is accommodated in the hollow hole of the metal plate, the light-emitting device does not occupy the thickness of the backlight assembly, the overall thickness of the backlight assembly approximately depends on the metal plate and the key cap mounting plate, the backlight assembly can be thinner, and the light and thin design of the backlight assembly is realized to the greatest extent;
and fourthly, the indium tin oxide circuit and the patches of the light-emitting devices are manufactured by the same supplier, so that the yield is well controlled.
The assembly steps of the luminous keyboard backlight component provided by the application are as follows:
the method comprises the following steps: preparing a backlight module 200;
step two: assembling the backlight module 200 under the key mounting board 300 and making the light emitting device 202 depart from the key mounting board 300;
step three: assembling the metal plate 100 below the backlight module 200, and respectively accommodating the light emitting devices 202 in the plurality of holes 101;
step four: adjusting the metal plate 100 to make the light emitting devices 202 slightly move relative to the hollow holes 101, so as to ensure that the metal plate 100 and the transparent base film 200 are completely aligned, and ensure that all the light emitting devices 202 are accommodated in the hollow holes 101;
step five: and connecting the conductive terminals of the indium tin oxide circuit into a power supply.
Referring to fig. 4, in an embodiment, the electrical connection relationship between the light emitting devices 202 and the ito line is as follows: two of the light emitting devices 202 are connected in series to form a series line, and a plurality of the series lines are connected in parallel in sequence.
By the design, the plurality of series circuits are sequentially connected in parallel, the circuit connection has small using current and low power consumption, and can be used for a longer time when driven by a battery.
In one embodiment, the light-emitting keyboard backlight assembly further includes a glue, the light-emitting device 202 is attached to the transparent base film 201, the glue covers the surface of the light-emitting device 202 exposed out of the transparent base film 201, and the edge of the glue is glued to the transparent base film 201.
In other words, the light emitting device 202 is disposed on the transparent base film 201 except for the region contacting with the transparent base film 201, and the other regions are the exposed regions relative to the transparent base film 201, the colloid is disposed on the exposed regions, the colloid freely flows to coat the whole light emitting device 202 and is cured, the light emitting device 202 is buckled inside similarly to a bowl shape, and the transparent base film 201 seals the bowl-shaped opening, i.e., the outer edge of the colloid is glued to the transparent base film.
In one embodiment, the encapsulant includes encapsulant encapsulating the light emitting device 202 and phosphor powder fused in the encapsulant to increase brightness and improve color aesthetics.
Preferably, in this embodiment, the phosphor is a colored phosphor.
More preferably, in this embodiment, the phosphor is a yellow phosphor.
Preferably, in this embodiment, the light emitting device 202 is a flip chip, especially a light emitting diode chip, which is generally referred to as a CST chip with high integration and low power consumption in the industry.
Further preferably, the light emitting device 200 is a blue light emitting diode chip.
More preferably, the light emitting device is a front light emitting diode chip.
More preferably, the light emitting device 200 is a blue light emitting diode chip, and the colloid is a colloid with yellow phosphor.
According to the light-emitting keyboard backlight assembly, the indium tin oxide circuit of the backlight module and the light-emitting device can be manufactured by the same supplier, and therefore the yield can be better controlled.
In other embodiments, the light emitting device 202 may be built in the transparent base film 201 with its protruding portion in the hollow hole 101; or the light emitting device 202 is disposed in the transparent base film 201 and is half exposed on the surface of the transparent base film 201; alternatively, the light emitting devices 202 are only wired to the ito traces, and the light emitting devices 202 are located in the stencil 101.
Another object of the present application is also a light-emitting keyboard comprising a light-emitting keyboard backlight assembly as described above or a light-emitting keyboard backlight assembly as described above.
Compared with the prior art, the luminous keyboard that this application provided's beneficial effect lies in:
firstly, the light-emitting keyboard adopts the indium tin oxide circuit built in the transparent base film to replace a plurality of FPC strips used for arranging conducting circuits in the prior art, a plurality of light-emitting devices are attached to the transparent base film, and the arrangement of a light guide plate is cancelled, so that the structure of the whole keyboard is simplified, the number of components of the keyboard is small, the assembly process is simplified and speeded, the accumulated assembly deviation is small, and the assembly efficiency is improved;
secondly, the luminous keyboard of the application cancels the resistance of the existing backlight assembly, the design of an indium tin oxide circuit does not need to consider the resistance, and the luminous devices can be connected in parallel after being connected in series two by two, and due to the change of the circuit design mode, under the commonly used voltage of 5V, the changed circuit has small current and power and further has small power consumption;
the light-emitting device is accommodated in the hollow hole of the metal plate, the light-emitting device does not occupy the thickness of the backlight assembly, the overall thickness of the backlight assembly approximately depends on the metal plate and the key cap mounting plate, the backlight assembly can be thinner, and the light and thin design of the backlight assembly is realized to the greatest extent;
and fourthly, the indium tin oxide circuit and the patches of the light-emitting devices are manufactured by the same supplier, so that the yield is well controlled.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (8)
1. A light-emitting keyboard backlight assembly, comprising: the backlight module comprises a metal plate with a plurality of hollowed holes, a keycap mounting plate with a plurality of keycap mounting holes, and a backlight module;
the backlight film group comprises a transparent base film, an indium tin oxide circuit arranged in the transparent base film and a plurality of light-emitting devices electrically connected to the indium tin oxide circuit;
the metal plate, the transparent base film and the keycap mounting plate are sequentially stacked, and the plurality of light-emitting devices are accommodated in the hollow holes.
2. The illuminated keyboard backlight assembly of claim 1, wherein: the electrical connection relationship between the plurality of light-emitting devices and the indium tin oxide circuit is as follows:
two of the light emitting devices are connected in series to form a series line, and a plurality of the series lines are connected in parallel.
3. The illuminated keyboard backlight assembly of claim 1, wherein: the luminous keyboard backlight assembly further comprises colloid, the luminous device patches are arranged on the transparent base film, the colloid coats the exposed parts of the luminous device on the surface of the transparent base film, and the edges of the colloid are glued to the transparent base film.
4. The illuminated keyboard backlight assembly of claim 1, wherein: the light emitting device is a light emitting diode chip.
5. The illuminated keyboard backlight assembly of claim 4, wherein: the light-emitting device is a front light-emitting diode chip.
6. The illuminated keyboard backlight assembly of claim 1, wherein: the projection area of the hollowed-out hole along the thickness direction of the metal plate is larger than the projection area of the light-emitting device along the thickness direction of the metal plate.
7. The illuminated keyboard backlight assembly of claim 1, wherein: the metal plate is an iron plate.
8. A light-emitting keyboard comprising the light-emitting keyboard backlight assembly according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022722030.7U CN213905210U (en) | 2020-11-20 | 2020-11-20 | Luminous keyboard backlight assembly and luminous keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022722030.7U CN213905210U (en) | 2020-11-20 | 2020-11-20 | Luminous keyboard backlight assembly and luminous keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213905210U true CN213905210U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022722030.7U Active CN213905210U (en) | 2020-11-20 | 2020-11-20 | Luminous keyboard backlight assembly and luminous keyboard |
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| Country | Link |
|---|---|
| CN (1) | CN213905210U (en) |
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- 2020-11-20 CN CN202022722030.7U patent/CN213905210U/en active Active
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