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Patent for Sale:

Technology to Produce Pure White Light Source Using Low Cost Materials.    

By using selected low cost phosphors, a pure white source is produced, with energy savings, stable color performance.

Overview

1. High NTSC% for high quality color performance for TV.

2. Low cost, easy transition to mass production and good luminous intensity of selected phosphor powder.

3. Good stability of color performance at high temperature for extended usage for LED TV.

4. Significant energy savings for Energy Star standard of flat panel TV.

Primary Application of the Technology

1. Backlight source of LED TV, mobile phone, digital photo album, satellite navigator, outdoor display monitor, notebook PC and tablet PC.

2. Indoor lighting which requires good color performance. For example: art exhibition center, operating room in hospital, printing plant.

3. Streetlamp.

4. Headlamp of car.

5. Pure white light source of overhead projector or camera.

The Problem Solved by the Technology

1..By using a selected phosphor, which can be excited by blue and weak red light which then emits strong pure red light with 646nm wavelength.

2.The cost of the selected phosphor is equal to 1/8 cost of industry standard phosphor, and they has similar luminous intensity.

3.From 25C to 80C, the luminance decay of pure red chip is 42%, and for the selected phosphor is 12%, and for blue chip or green chip is also 12%. Therefore, this new kind of pure white light source has good stability for color performance. This is very important for TV application.

4.The light energy loss caused by color filter for blue chip sealed with YAG phosphor is 51%, and for new LED sealed with the selected phosphor is 23%. Therefore, the LED TV using backlight of new LED sealed with the selected phosphor will have more energy saving (28%) than using backlight of blue chip sealed with YAG phosphor.

The seller would like to be granted a license back.

The seller may consider selling these patents individually.

Patent Summary

U.S. Patent Classes & Classifications Covered in this listing:

Class 427: Coating Processes

This is the generic class for: A. applying or obtaining a coating on a surface. The coating may be hard or soft, permanent or transitory, supplied solely by extraneous materials or supplied wholly or in part by the base material. B. impregnating a base by causing a coating material to extend or penetrate into the base material, or into the interstices of a porous, cellular or foraminous material. C. taking preparatory treatments of the base material, subsequent treatments of the coated base material and other ancillary noncoating operations claimed, per se, processes limited to etching for making a base more compatible with, or adherent to, the coating wherein the base is the substrate (work) onto which a coating is applied are included.

Subclass 71: Particles applied