LED structure with ultraviolet-light emission chip and multilayered resins to generate various colored lights

• US 5,962,971 A
• Filed: 08/29/1997
• Issued: 10/05/1999
• Est. Priority Date: 08/29/1997
• Status: Expired due to Term

• Current Assignee: Solidlite Corp.
• Original Assignee: Hsing Chen
• Inventors: Chen, Hsing
• Primary Examiner(s): O'Shea, Sandra
• Assistant Examiner(s): DELGIZZI, RONALD ERNEST
• Application Number:
  US08/921,071
• Time in Patent Office: 767 Days
• Field of Search: 313/512, 362/800
• US Class Current: 313/512
• CPC Class Codes: H01L 33/44 characterised by the coatings, e.g. passivation layer or anti-reflective coating
• CPC Class Codes: H01L 33/507 the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
• CPC Class Codes: Y10S 362/80 Light emitting diode

Abstract

The innovative LED structure of the present invention mixes certain materials which can change the wave length of light in the resin of a LED and enables the LED to generate a white light and lights of various other colors as well. The shortcomings of conventional LEDs may be improved upon. By coating different fluorescent materials on the surface of a ultra violet light LED chip, it is possible to obtain a LED able to emit various colored light.

Claims

1. An LED structure for producing various colored light and having two electrode supporting frames, one electrode supporting frame having a V-shaped slot, the LED structure comprising:

a) a light emission chip located in the V-shaped slot;

b) a first resin covering the light emission chip, the first resin being without fluorescent material;

c) a second resin containing fluorescent material for changing the length of light waves emanating from the light emission chip, the second resin comprising a layer spaced from the light emission chip; and

,

d) a third resin forming a sealing enclosure for the first and second resins, the third resin being without fluorescent material.

2. The LED structure of claim 1, wherein the layer of second resin has a side facing away from the light emission chip and further comprising a filter layer located on the side of the second resin layer facing away from the light emission chip.

3. The LED structure of claim 1, wherein the layer of second resin has an arcuate configuration.

4. The LED structure of claim 3, wherein the arcuate layer of second resin has a concavely curved side facing toward the light emission chip.

5. The LED structure of claim 1, wherein the first resin has an outer surface and wherein the second resin layer is applied to the outer surface of the first resin and is enclosed by the third resin.

6. The LED structure of claim 1, wherein the third resin has an inner surface and wherein the second resin layer is applied to the inner surface of the third resin.

7. The LED structure of claim 6, wherein the light emission chip comprises an ultraviolet light chip.

8. The LED structure of claim 5, wherein the light emission chip comprises an ultraviolet light chip.

9. The LED structure of claim 4, wherein the light emission chip comprises an ultraviolet light chip.

10. The LED structure of claim 3, wherein the light emission chip comprises an ultraviolet light chip.

11. The LED structure of claim 2, wherein the light emission chip comprises an ultraviolet light chip.

12. The LED structure of claim 1, wherein the light emission chip comprises an ultraviolet light chip.

13. An LED structure for producing various colored light and having a base with a concave slot, the LED structure comprising:

a) a light emission chip located in the concave slot;

b) a first resin located in the concave slot and covering the light emission chip, the first resin having a thickness measured from a bottom of the concave slot greater than a corresponding thickness of the light emission chip, the first resin being without fluorescent material;

c) a second resin containing fluorescent material for changing the length of light waves emanating from the light emissive chip, the second resin comprising a layer applied to a surface of the first resin; and

,

d) a third resin comprising a layer applied to a surface of the layer of second resin facing away from the light emissive diode, the third resin being without fluorescent material.

14. An LED structure for producing various colored light and having a base with a concave slot, the LED structure comprising:

a) a light emission chip located in the concave slot;

b) a first resin located in the concave slot and covering the light emission chip, the first resin having a thickness measured from a bottom of the concave slot greater than a corresponding thickness of the light emission chip, the first resin being without fluorescent material;

c) a second resin containing fluorescent material for changing the length of light waves emanating from the light emissive chip, the second resin comprising a layer applied to a surface of the first resin; and

,

d) a filter layer applied to a surface of the layer of second resin facing away from the light emissive diode.