Back lighting plate

• US 6,425,674 B1
• Filed: 01/10/2001
• Issued: 07/30/2002
• Est. Priority Date: 01/10/2001
• Status: Expired due to Fees

• Current Assignee: Opto-Prolite Electronic Co., Ltd.
• Original Assignee: Opto-Prolite Electronic Co., Ltd.
• Inventors: Su, Michael
• Primary Examiner(s): Tso, Laura K.
• Application Number:
  US09/756,728
• Publication Number:
  US 20020089838A1
• Time in Patent Office: 566 Days
• Field of Search: 362/31, 362/582, 362/84
• US Class Current: 362/629
• CPC Class Codes: F21K 2/00 Non-electric light sources using luminescence using excitation by radioactivity G21H3/02, H01J65/06, H01J65/08; using excitation by an external electromagnetic field or by external corpuscular radiation H01J65/04; Light sources using electrochemiluminescence
• CPC Class Codes: G02B 6/0031 Reflecting element, sheet or layer
• CPC Class Codes: G02B 6/004 Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
• CPC Class Codes: G02B 6/0055 Reflecting element, sheet or layer

Abstract

The present invention provides a back lighting plate, which is distributed with reflecting grains uniformly at inside, and has a bottom fluorescent reflecting coating and (or) an atomised top surface. Apply this optical conducting plate having many reflecting grains at inside to replace the conventional sticking diffusion film to get good reflection environment so that the light ray can be fully reflected and absorbed by the bottom fluorescent reflecting coating so as to meet the expected colour and evenness degree.

Claims

1. A back lighting plate, wherein, the inside of the optical conducting plate is distributed with reflecting grains uniformly, and has a bottom fluorescent reflecting coating.

2. A back lighting plate as claimed in claim 1, wherein, the top surface of the optical conducting plate is processed in atomisation treat.