Backlight button assemblage

• US 20060203485A1
• Filed: 11/23/2005
• Published: 09/14/2006
• Est. Priority Date: 03/11/2005
• Status: Active Grant

• Current Assignee: Aixin Technologies LLC (Intellectual Ventures LLC)
• Original Assignee: Coretronic Corporation
• Inventors: Chang, Tai-Li, Fu, Wen-Chi
• Granted Patent: US 7,253,369 B2
• Time in Patent Office: Days
• US Class Current: 362/237
• CPC Class Codes: H01H 13/83 characterised by legends, e.g. Braille, liquid crystal displays, light emitting or optical elements
• CPC Class Codes: H01H 2219/06 Reflector
• CPC Class Codes: H01H 2219/062 Light conductor
• CPC Class Codes: H01H 2219/0622 only an illuminated ring around keys

Abstract

The present invention discloses a backlight button assemblage including an opaque button, a light-guiding element, and a light-emitting element. The light-emitting element is disposed under the button and a light emitted from the light-emitting element is guided to the front side of the button via the light-guiding element surrounding the button. Via the light-guiding ability of the light-guiding element and redisposing the light-emitting element, the present invention enables the light to be evenly distributed over the light-guiding element and to achieve the objective of light uniformity so that the partial dazzling spots are avoided, the quantity of light-emitting elements is reduced, and fabrication cost is saved.

Claims

1. A backlight button assemblage, comprising:

an opaque button;

at least one light-emitting element, disposed under said button; and

a light-guiding element, surrounding said button and guiding a light emitted from said light-emitting element to transmit out from a front of said button.

2. The backlight button assemblage according to claim 1, wherein said light-emitting element is a light-emitting diode.

3. The backlight button assemblage according to claim 2, wherein said light-emitting element is a directionless light-emitting diode.

4. The backlight button assemblage according to claim 1, wherein said light-emitting element is disposed in a symmetric position of a symmetric center of said button.

5. The backlight button assemblage according to claim 1, wherein a shape of said light-guiding element matches a contour of said button.

6. The backlight button assemblage according to claim 1, wherein said light-guiding element has at least one corner.

7. The backlight button assemblage according to claim 6, wherein said corner has a reflective surface reflecting said light from said light-emitting element, and wherein the reflected light is guided to the front of said button and transmits out the front said button.

8. A backlight button assemblage, comprising:

a button;

a light-guiding element, surrounding said button and having at least one corner, a light incident surface, and a light-emitting surface, wherein said corner is disposed between said light incident surface and said light-emitting surface; and

at least one light-emitting element, disposed in the front of said light incident surface.

9. The backlight button assemblage according to claim 8, wherein said light-emitting element is a light-emitting diode.

10. The backlight button assemblage according to claim 8, wherein said button is an opaque element.

11. The backlight button assemblage according to claim 8, wherein said light-emitting element is a directional light-emitting element.

12. The backlight button assemblage according to claim 8, wherein said corner of said light-guiding element has a reflective surface reflecting the light emitted from said light-emitting element, and wherein the reflected light is guided to the front of said button and transmits out the front of said button.

13. The backlight button assemblage according to claim 8, wherein said a light-emitting direction of a light emitted from light-emitting element is parallel to a normal direction of said light incident surface.