Keyboard device and backlight module

Abstract

A keyboard device includes a backlight module, which comprises a circuit board and a quantum dot film. The circuit board has a light-emitting surface and a plurality of light-emitting elements, the plurality of light-emitting elements being disposed on the light-emitting surface. The quantum dot film is disposed on the light-emitting surface of the circuit board and covers the plurality of light-emitting elements, or the quantum dot film is disposed on the inner surface of the keycaps of the keyboard device.

Claims

1. A backlight module for a keyboard device, comprising: A circuit board has a light-emitting surface and a plurality of light-emitting elements disposed on the light-emitting surface; and a quantum dot film disposed on the light-emitting surface of the circuit board and covering the light-emitting elements; wherein the quantum dot film has a plurality of quantum dot regions, the positions of the quantum dot regions respectively corresponding to a portion of the light-emitting elements, and the regions of the quantum dot film corresponding to another portion of the light-emitting elements are not provided with quantum dot material.

2. The backlight module of the keyboard device as described in claim 1, wherein the quantum dot film has a first surface and a second surface opposite to each other, and a light-shielding layer is disposed on a local area of ​​the first surface or the second surface.

3. The backlight module of the keyboard device as claimed in claim 1, wherein the quantum dot film has a first surface and a second surface opposite to each other, and a reflective layer is disposed on a local area of ​​the first surface or the second surface.

4. The backlight module of the keyboard device as claimed in claim 1, wherein the quantum dot film has a first surface and a second surface facing each other, the first surface facing the light-emitting surface of the circuit board, a light-shielding layer is disposed on a local area of ​​the second surface, and a reflective layer is disposed on a local area of ​​the first surface.

5. The backlight module of the keyboard device as claimed in claim 1, wherein the quantum dot film has a first surface and a second surface facing each other, the first surface facing the light-emitting surface of the circuit board, a light-shielding layer and a reflective layer are disposed on a local area of ​​the second surface, and the reflective layer is stacked between the light-shielding layer and the quantum dot film.

6. The backlight module of the keyboard device as claimed in claim 1, wherein the quantum dot film has a first surface and a second surface facing each other, the first surface facing the light-emitting surface of the circuit board, a light-shielding layer and a reflective layer are disposed on a local area of ​​the first surface, and the reflective layer is stacked between the light-shielding layer and the circuit board.

7. The backlight module of the keyboard device as claimed in claim 1, wherein a light-reflecting layer is provided on the light-emitting surface of the circuit board, the light-reflecting layer having a plurality of through holes, the positions of the through holes respectively corresponding to the positions of the light-emitting elements.

8. The backlight module of the keyboard device as claimed in claim 1, wherein a light guide plate is provided on the light-emitting surface of the circuit board, the light guide plate having a plurality of clearance holes, the positions of the clearance holes respectively corresponding to the positions of the light-emitting elements.

9. The backlight module of the keyboard device as described in claim 1, wherein each of the light-emitting elements is a blue light-emitting element.

10. A keyboard device comprising a backlight module as described in any one of claims 1 to 9.

11. The keyboard device as claimed in claim 10 further includes a substrate and a keycap, the substrate having an upper surface and a lower surface opposite each other, the keycap being disposed above the upper surface, the backlight module being disposed on the lower surface, and the quantum dot film being located between the lower surface and the circuit board.

12. The keyboard device as claimed in claim 11, wherein the substrate has a light-transmitting portion and at least one light-emitting element is present within the orthographic projection range of the light-transmitting portion.

13. A keyboard device, comprising: A circuit board having a light-emitting surface and a plurality of light-emitting elements disposed on the light-emitting surface; a keycap disposed above the light-emitting surface, the keycap having an inner surface facing the circuit board; and a quantum dot film disposed on the inner surface of the keycap.

14. The keyboard device as claimed in claim 13 further includes a substrate having an upper surface and a lower surface opposite each other, the keycap being disposed above the upper surface and the circuit board being disposed on the lower surface.

15. The keyboard device as claimed in claim 14, wherein the substrate has a light-transmitting portion and at least one light-emitting element is present within the orthographic projection range of the light-transmitting portion.

16. The keyboard device as claimed in claim 13, wherein each of the light-emitting elements is a blue light-emitting element.

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