CN211507478U

CN211507478U - Luminous keyboard structure

Info

Publication number: CN211507478U
Application number: CN201922231160.8U
Authority: CN
Inventors: 林于凯; 康振方; 江俊德
Original assignee: Suzhou Jiahuang Electronic Co ltd
Current assignee: Suzhou Jiahuang Electronic Co ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-09-15
Anticipated expiration: 2029-12-12

Abstract

A light-emitting keyboard structure comprises a backlight module and a key assembly arranged on the backlight module, wherein the backlight module comprises a thin film circuit layer, a light guide layer stacked below the thin film circuit and a light reflecting bottom layer stacked below the light guide layer; the thin film circuit is made of transparent material and has a lower surface and an upper surface, at least one electrically connected light-emitting unit is arranged on the lower surface, and the light source generated by each light-emitting unit is diffused from the lower surface of the thin film circuit layer through the light guide plate and passes through the upper surface through the reflective bottom layer to provide the light-emitting effect.

Description

Luminous keyboard structure

Technical Field

The present invention relates to a keyboard, and more particularly to a light-emitting keyboard structure formed by a transparent thin film circuit.

Background

Due to the rapid development of the computer industry, the keyboard used for the user to communicate with or operate the computer is also one of the indispensable products. The existing keyboard not only serves as a basic input function, but also can be operated and used at a place with insufficient light by an operator through an additional light-emitting function, or the keyboard is matched with an entertainment mode to present an additional visual effect when in use.

In general, a keyboard with a light-emitting function is provided with a backlight module under the keyboard. The backlight module usually has a flexible circuit with a light source (such as an LED) and a corresponding light guiding or reflecting structure, and when a side-in light source is adopted, the light emitting effect of the light source after light guiding or reflecting can be shown below the keyboard. In order to facilitate heat dissipation of pen motor mechanisms such as a CPU or a GPU, the center of the lamp piece module needs to be provided with a large number of heat dissipation holes at the same time to maintain the efficiency of the computer, but at the same time, light effect breakpoints are formed, broken holes need to be designed and bypassed, so that the design difficulty of the light effect is increased, and limit light effect of a keyboard is changed, and the light effect cannot be controlled by multiple regions or even a single key. If the light effect variation is to be increased, the number and arrangement of light sources in the conventional flexible printed circuit board must be increased, and the development cost for designing the irregular flexible printed circuit board is increased when the area of the substrate is increased.

In general, a keyboard with a light-emitting function is provided with a backlight module under the keyboard. The backlight module usually has a thin film circuit with a light source (such as an LED) and a corresponding light guiding or reflecting structure, and in the case of direct-lit illumination, in order to make the light emitting effect of the light source after light guiding or light reflecting appear from the lower side of the keyboard, a light outlet hole must be formed in the thin film circuit, which causes inconvenience due to the arrangement of the hole breaking structure in the thin film circuit and the need to avoid the hole breaking structure in the circuit layout. In addition, if different usage modes are matched in the keyboard function, the specific position displayed generates the specified light-emitting effect, the required circuit design is complex, and the light-emitting uniformity is difficult to control.

In view of the above, the inventor, in order to improve and solve the above-mentioned deficiencies, has made intensive research and application of theory, and finally provides a reasonable design and an effective improvement of the above-mentioned deficiencies.

Disclosure of Invention

The main objective of the present invention is to provide a light-emitting keyboard structure, which is a thin film circuit made of transparent material, and the light-emitting keyboard structure does not need any hole-breaking structure to achieve the light-emitting effect, and does not have any influence on the circuit layout of the whole thin film circuit.

In order to achieve the above object, the present invention provides a light-emitting keyboard structure, which comprises a backlight module and a key assembly disposed on the backlight module, wherein the backlight module comprises a thin film circuit layer, a light guide layer stacked under the thin film circuit, and a light reflecting bottom layer stacked under the light guide layer; wherein the thin film circuit is made of transparent material and has a lower surface and an upper surface, the lower surface is provided with at least one electrically connected light-emitting unit, and the light source generated by each light-emitting unit passes through the upper surface from the lower surface of the thin film circuit layer;

preferably, the light emitting unit is an LED.

Preferably, the light guide layer is provided with a bare area corresponding to each of the light emitting units, so that the corresponding light emitting unit is disposed in the bare area from above.

Preferably, the light guide layer is formed with a light incident surface in each of the bare areas.

Preferably, the reflective bottom layer has a reflective layer.

Preferably, the light-reflecting bottom layer further has a bottom layer overlapping with the light-reflecting layer, and the light-reflecting layer is located between the light-guiding layer and the bottom layer.

Preferably, a light-shielding layer is covered on the upper surface of the thin film circuit layer, and a non-light-shielding region is formed on the light-shielding layer.

Preferably, the key assembly includes a bottom plate and at least one key arranged and connected to the bottom plate.

By the structure, the light source generated by the light emitting unit is diffused from the lower surface of the thin film circuit layer through the light guide plate and passes through the upper surface through the reflective bottom layer to provide the light emitting effect.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent in light of the detailed description of the preferred embodiments of the present invention as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a partial cross-sectional view of the present invention.

Fig. 2 is a schematic cross-sectional view of the backlight module in a light-emitting state according to the present invention.

Reference numerals:

backlight module 1

Lower surface 100 of thin-film circuit layer 10

Upper surface 101 of light emitting unit 100a

The non-light-shielding region 102a of the light-shielding layer 102

Bare area 110 of light guide layer 11

Light incident surface 110a

Reflective substrate 12 bottom layer 120

Light reflecting layer 121

Key assembly 2

Base plate 20

Push button 21

Detailed Description

In order to further disclose the features and technical contents of the present invention, please refer to the following detailed description of the present invention and the accompanying drawings, which are provided for reference and illustration purposes only and are not intended to limit the present invention.

Please refer to fig. 1, which is a partial cross-sectional view of the present invention. The utility model provides a light-emitting keyboard structure, which comprises a backlight module 1 and a key assembly 2 arranged on the backlight module 1; wherein:

the key assembly 2 may include a base 20, and one or more keys 21 (one is shown) arranged and connected to the base 20; since this part is not the scope of the improvement of the present invention, and the implementation manner is not different from the conventional keyboard structure, or can be replaced or changed by the conventional keyboard structure, it will not be described again.

The backlight module 1 is stacked under the key assembly 2, i.e. stacked with the bottom plate 20 of the key assembly 2. The backlight module 1 includes a thin film circuit layer 10, a light guide layer 11, and a reflective bottom layer 12, the thin film circuit layer 10 is made of a light-transmitting material, and has a lower surface 100 and an upper surface 101, and at least one electrically connected light-emitting unit 100a (an example is shown in the figure) is disposed on the lower surface 100, and the light-emitting unit 100a may be an LED; and the upper surface 101 is provided for the key assembly 2 to be stacked thereon.

As mentioned above, the light guiding layer 11 is stacked under the thin film circuit layer 10, i.e. stacked under the lower surface 100 of the thin film circuit layer 10, and a bare area 110 is opened at the position corresponding to each light emitting unit 100a, so that the corresponding light emitting unit 100a is placed in the bare area 110 from the upper part thereof, and the light reflecting bottom layer 12 is stacked under the light guiding layer 11 and is shielded at the lower part of the bare area 110. In the embodiment of the present invention, the reflective bottom layer 12 can be formed by stacking a bottom layer 120 and a reflective layer 121, and the reflective layer 121 is located between the light guiding layer 11 and the bottom layer 120.

Accordingly, as shown in fig. 2, when each light emitting unit 100a emits light, part of the light source can directly enter the light guiding layer 11 through the light incident surface 110a in the bare area 110, or indirectly enter the light guiding layer 11 through the light incident surface 110a after being reflected by the light reflecting layer 121, so that the light guiding layer 11 can emit light as a whole. At this time, since the thin film circuit layer 10 of the present invention is made of a transparent material, the light source can pass through the upper surface 101 from the lower surface 100 of the thin film circuit layer 10, so that the backlight module 1 disposed below the key assembly 2 can provide a uniform light emitting effect. In the specific embodiment, in order to design the light emitting effect provided by the backlight module 1 according to the actual requirement, a light shielding layer 102 may be coated on the upper surface 101 of the thin film circuit layer 10, and an un-shielded region 102a is formed on the light shielding layer 102, so as to provide the portion to be emitted by the design of the un-shielded region 102a, thereby more flexibly designing the portion to be emitted by the keyboard or presenting various types of emission without affecting the circuit layout of the thin film circuit layer 10.

Therefore, the luminous keyboard structure of the present invention can be obtained by the above structure.

Therefore, borrow by the utility model discloses luminous keyboard structure, owing to adopt the printing opacity material to constitute film circuit, make the light source that LED produced can directly pass through this film circuit, make the keyboard present many first visual effects, especially under the design of straight following formula, can not need special design to bypass and provide the required broken hole of heat dissipation, light provides the diffusion and the reflection via reflector layer 121 through leaded light layer 11, directly by transparent film circuit layer 10 from the broken hole light-emitting of top keyboard bottom plate 20, the broken hole structure that need not carry out extra keyboard bottom plate 20 is in order to reach the effect of light-emitting, also can not lay and produce any influence to the holistic circuit of film circuit, consequently also can make more nimble design to the position of light-emitting, thereby promote the many first visual effects of keyboard on light-emitting function.

In summary, the present invention is a novel and rare product which can achieve the intended purpose, and solve the known disadvantages, and due to the novelty and the progress, it completely conforms to the requirements of the new patent application, and the application is laid out according to the patent law, and the patent is worried about and granted to the present application, so as to ensure the rights of the utility model.

However, the above description is only a preferred and practical embodiment of the present invention, and not intended to limit the scope of the present invention, so that all the equivalent structural changes in the descriptions and drawings of the present invention are included in the scope of the present invention, and it is well known that the present invention can be applied to the same.

Claims

1. A light-emitting keyboard structure, comprising:

the backlight module comprises a thin film circuit layer, a light guide layer stacked below the thin film circuit and a reflective bottom layer stacked below the light guide layer; and

the key assembly is arranged on the backlight module;

wherein, the thin film circuit is made of transparent material and has a lower surface and an upper surface, at least one electrically connected light-emitting unit is arranged on the lower surface, and the light source generated by the light-emitting unit can pass through the upper surface from the lower surface of the thin film circuit layer.

2. The illuminated keyboard structure of claim 1, wherein said illumination unit is an LED.

3. The light-emitting keyboard structure of claim 1, wherein the light guiding layer is formed with a bare area corresponding to each of the light-emitting units, respectively, so that the corresponding light-emitting unit is disposed in the bare area from above.

4. The light-emitting keyboard structure of claim 3, wherein the light-guiding layer has a light-incident surface formed in each of the bare areas.

5. The illuminated keyboard structure of claim 1, wherein the reflective substrate has a reflective layer.

6. The light-emitting keyboard structure of claim 5, wherein the light-reflecting bottom layer further comprises a bottom layer overlapping the light-reflecting layer, and the light-reflecting layer is located between the light-guiding layer and the bottom layer.

7. The light-emitting keyboard structure of claim 1, wherein a light-shielding layer is coated on the upper surface of the thin film circuit layer, and a non-light-shielding region is formed on the light-shielding layer.

8. The illuminated keyboard structure according to any one of claims 1-7, wherein the key assembly comprises a base plate and at least one key arranged and connected to the base plate.