Large scale polarizer and polarizer system employing it

• US 7,016,113 B2
• Filed: 05/30/2002
• Issued: 03/21/2006
• Est. Priority Date: 05/28/1997
• Status: Expired due to Term

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Philips LCD Company Limited (LG Display Co., Ltd.)
• Inventors: Yoon, Ki Hyuk, Choi, Jae Beom, Song, Byung Duck
• Primary Examiner(s): Boutsikaris, Leonidas
• Application Number:
  US10/157,196
• Publication Number:
  US 20020141059A1
• Time in Patent Office: 1,391 Days
• Field of Search: 359/485, 359/494, 359/500, 359/352, 359/483, 359/486, 359487-488, 359 75- 77, 359/497, 349/124, 349/154, 349/136, 362/19, 382/280, 434/21
• US Class Current: 359/485.02
• CPC Class Codes: G02B 5/3025 Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state G02B5/3008, G02B5/3016 take precedence

Abstract

A large scale polarizer comprises one or more quartz substrate parts formed as a rectangle, a triangle, or a parallelogram, and a polarizer holder supporting the quartz substrate part. The polarizer holder may be in a lattice structure holding a plurality of quartz substrate parts. A polarizer system employing the large scale polarizer comprises a lens making an incident light to a parallel light, the large scale polarizer, and a moving control part coupled to and moving the large scale polarizer.

Claims

1. A polarizer system for treating an alignment layer on a substrate, comprising:

a light source for generating a light;

a lens;

at least a first polarizer including a quartz substrate adjacent the lens, the quartz substrate including an optically absorptive polarizer holder and a plurality of quartz substrate parts, the plurality of quartz substrate parts including first sections at a first angle with respect to the lens and second sections at a second angle with respect to the lens, wherein the first sections are not parallel to the second sections and wherein the optically absorptive polarizer holder is in contact with edges of the first and second sections; and

a support member for supporting a substrate having an alignment layer thereon, the polarizer being positioned between the light source and the support member.

2. The polarizer system according to claim 1, wherein the lens includes a collimating lens and the collimating lens is positioned between the first polarizer and the light source.

3. The polarizer system according to claim 2, further comprising a second polarizer and a second lens, the second polarizer and the second lens being positioned between the light source and the first polarizer.

4. The polarizer system according to claim 1, further comprising a first moving control part for moving the first polarizer in an X-direction with respect to the support member and a second moving control part for moving the first polarizer in a Y-direction with respect to the support member.

5. The polarizer system according to claim 1, wherein the first polarizer is maintained at a predetermined distance from the support member.

6. The polarizer system according to claim 1, wherein the optically absorptive polarizer holder includes a lattice structure.