Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PROJECTION-TYPE DISPLAY DEVICE
Document Type and Number:
Japanese Patent JP2008065277
Kind Code:
A
Abstract:

To provide a projection-type display device with which complication of a manufacturing step is simplified.

Since a reflection-type polarization conversion film 27 combines a function of converting a polarization direction of at least a part of s-polarized light emitted, from a polarization separating film 26 into a polarization direction of p-polarized light (functions as a retardation plate) and a function to reflect the p-polarized light with converted polarization direction and emit it from a polarization conversion element 23 (functions as a reflecting film), a retardation plate and a reflecting film of a conventional construction can be constructed, for example, as a single member, and there is no need for separately mounting them. As a result, the number of components of the polarization conversion element 23 is reduced, and the complexities of the manufacturing step is simplified. Furthermore, complexities of the manufacturing steps of the projector is simplified.


Inventors:
SAWAKI DAISUKE
Application Number:
JP2006246093A
Publication Date:
March 21, 2008
Filing Date:
September 11, 2006
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SEIKO EPSON CORP
International Classes:
G02F1/1335; G02B5/18; G02B5/30; G02F1/13; G03B21/00; G03B21/14
Domestic Patent References:
JP2008065276A2008-03-21
JP2008065278A2008-03-21
JP2008065279A2008-03-21
JP2006003384A2006-01-05
JP2006227361A2006-08-31
JP2003167125A2003-06-13
JP2004145305A2004-05-20
JP2006064871A2006-03-09
JP2005037969A2005-02-10
JP2005128241A2005-05-19
Attorney, Agent or Firm:
Kazuya Nishi
Masatake Shiga
Masakazu Aoyama



 
Previous Patent: LIQUID CRYSTAL DISPLAY DEVICE AND MANUFACTURING METHOD THEREOF

Next Patent: PROJECTION TYPE DISPLAY DEVICE