Claims
- 1. In the process of fabrication of light emitting diode arrays wherein color is determined by the concentration of the variable x in an AB.sub.1-x C.sub.x semiconductor at each diode, the improvement comprising:
- providing on a semiconductor substrate of the type AB an epitaxial body of monocrystalline semiconductor material of the type AB.sub.1-x C.sub.x with variations in the concentration of x that progress from a major surface through the crystal body in regions of incremental change followed by regions of cumulatively higher but constant value of x;
- exposing for each diode a portion of said body at a particular region of cumulative higher constant value of x; and
- forming a diode at each said exposed portion.
- 2. The process of claim 1 wherein said substrate is GaAs and said body is GaAs.sub.1-x P.sub.x.
- 3. The process of claim 1 wherein said substrate is GaP and said body is GaAs.sub.1-x P.sub.x.
- 4. The process of claim 1 wherein said exposing is achieved by etching.
- 5. The process of claim 1 wherein said providing of a body of semiconductor material involves the fabrication of multiple regions by the etch and refill process.
Parent Case Info
This is a division, of application Ser. No. 835,097 filed 09/21/77 now U.S. Pat. No. 4,148,045.
US Referenced Citations (10)
Non-Patent Literature Citations (3)
Entry |
Blum et al., "Integrated Multicolor Light-Emitting Diode Array" I.B.M. Tech. Discl. Bull., vol. 15, No. 2, Jul. 1972, pp. 445-446. |
Murray et al., "Lighting Up in a Group" Electronics, Mar. 4, 1968, pp. 104-110. |
Craford et al., "LED Technology" Solid State Technology, Jan. 1974, pp. 39-58. |
Divisions (1)
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Number |
Date |
Country |
Parent |
835097 |
Sep 1977 |
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