Light-emitting assembly for keyboard
A light-emitting assembly positioned within a switch housing of a keyboard assembly for an electronic device is disclosed. The light-emitting assembly may include a phosphor structure, a transparent material positioned on opposing side surfaces of the phosphor structure, and an epoxy layer formed over an entire back surface of the phosphor structure and the transparent material. The light-emitting assembly may also include a mask layer formed over an entire top surface of: the phosphor structure, the transparent material, and the epoxy layer. The light-emitting assembly may further include a light source positioned within the phosphor structure for emitting a light.
1. A keyboard, comprising:
a substrate;
a tactile dome positioned above the substrate;
a keycap positioned above the tactile dome and configured to move when pressed;
a light-emitting assembly electrically connected to the substrate, the light-emitting assembly comprising:
a light source;
an opaque material defining a first side of the light-emitting assembly, wherein light from the light source is prevented from passing through the opaque material;
a luminescent structure at least partially enclosing the light source and defining second, third, and fourth sides of the light-emitting assembly, at least one of the second, third, and fourth sides being positioned opposite the first side; and
wherein light from the light source is directable through the second, third, and fourth sides of the light-emitting assembly to illuminate the keycap.
2. The keyboard of claim 1 , wherein the second, third, and fourth sides are orthogonal to each other.
3. The keyboard of claim 1 , wherein the second, third, and fourth sides are laterally facing relative to an axis of movement of the keycap.
4. The keyboard of claim 1 , wherein the light-emitting assembly further comprises an electrical lead extending through the luminescent structure and in electrical communication with the substrate.
5. The keyboard of claim 1 , wherein the second side of the light-emitting assembly comprises a different material composition relative to the third side of the light-emitting assembly.
6. The keyboard of claim 5 , wherein the second side comprises a transparent material composition and the third side comprises a phosphor material composition.
7. The keyboard of claim 1 , wherein the light source is positioned horizontally off-center in the light-emitting assembly.
8. The keyboard of claim 1 , wherein light emitted from the light source is configured to have a substantially equal wavelength when exiting through the second, third, and fourth sides.
9. A laptop computer, comprising:
a casing including a lid portion and a base portion;
a display positioned in the lid portion;
a keyboard assembly positioned in the base portion, the keyboard assembly comprising:
a substrate;
a set of keycaps positioned over the substrate and configured to move relative to the substrate along an axis of movement;
a set of light-emitting assemblies positioned under the set of keycaps, each light emitting assembly comprising:
a light source configured to emit light in at least one direction perpendicular to the axis of movement; and
a light-blocking material configured to prevent light from exiting the light-emitting assembly in at least one other direction perpendicular to the axis of movement.
10. The laptop computer of claim 9 , wherein the light-blocking material comprises an opaque material.
11. The laptop computer of claim 9 , wherein the light source is within an at least partially transparent material.
12. The laptop computer of claim 9 , wherein each of the light-emitting assemblies comprises a light-blocking mask positioned vertically above the light source.
13. The laptop computer of claim 9 , further comprising a switch housing at least partially surrounding at least one light emitting assembly.
14. The laptop computer of claim 13 , wherein the switch housing comprises a recess, at least one of the light-emitting assemblies being positioned in the recess.
15. The laptop computer of claim 13 , wherein the switch housing is configured to house a switch.
16. A key input mechanism, comprising:
a substrate;
a keycap positioned above the substrate and configured to move along a vertical axis when pressed;
a keycap support coupled to the keycap and movable with the keycap;
a light-emitting assembly electrically connected to the substrate and comprising a light source positioned below the keycap, the light-emitting assembly being configured to emit light along at least three directions in a plane perpendicular to the vertical axis; and
an opaque material that at least partially covers three lateral sides of the light-emitting assembly and prevents light from being emitted through the sidewall along a fourth direction in the plane.
17. The key input mechanism of claim 16 , wherein the light-emitting assembly is positioned entirely under a top surface of the keycap.
18. The key input mechanism of claim 16 , further comprising a switch, wherein at least one of the at least three directions is oriented toward the vertical axis.
19. The key input mechanism of claim 16 , wherein the at least three directions are orthogonal to each other.