US RE46,601 E1
Liquid crystal display apparatus
Kiyohiro Kimura, Miyagi (JP); Makoto Aoki, Miyagi (JP); Jun Sasaki, Miyagi (JP); and Toru Abiko, Miyagi (JP)
Assigned to Saturn Licensing LLC, New York, NY (US)
Appl. No. 14/603,284
Filed by Saturn Licensing LLC, New York, NY (US)
PCT Filed Mar. 29, 2007, PCT No. PCT/JP2007/056793
§ 371(c)(1), (2), (4) Date Aug. 29, 2008,
PCT Pub. No. WO2007/119584, PCT Pub. Date Oct. 25, 2007.
Application 11/920,886 is a continuation of application No. 13/963,267, filed on Aug. 9, 2013, abandoned.
Application 14/603,284 is a reissue of application No. 11/920,886, filed on Aug. 29, 2008, now 7,995,158, issued on Aug. 9, 2011.
Application 13/963,267 is a reissue of application No. 11/920,886, filed on Aug. 29, 2008, granted, now 7,995,158, issued on Aug. 9, 2011.
Claims priority of application No. 2006-090709 (JP), filed on Mar. 29, 2006.
Int. Cl. G02F 1/1335 (2006.01); F21V 8/00 (2006.01)
CPC G02B 6/0053 (2013.01) [G02F 1/133606 (2013.01); G02F 2001/133607 (2013.01)] 40 Claims
OG exemplary drawing
 
[ 16. A liquid crystal display apparatus comprising;
a light source;
a liquid crystal display panel; and
condenser sheets for condensing light emitted from the light source and guiding the light toward the liquid crystal display panel,
the condenser sheets including;
a first condenser sheet in which ridges of a first corrugated structure having a first light-condensing characteristic are periodically arranged on one surface of the first condenser sheet in a first direction of the liquid crystal display panel; and
a second condenser sheet in which ridges of a second corrugated structure having a second light-condensing characteristic are periodically arranged on one surface of the second condenser sheet in a second direction of the liquid crystal display panel, wherein the first direction and the second direction are crossed,
wherein, when a lateral pixel or sub-pixel pitch of the liquid crystal display panel in micrometers is defined as Pp, an array pitch of the first corrugated structure in micrometers is defined as Px, and an array pitch of the second corrugated structure in micrometers is defined as Py, the following relationships are satisfied: 10 μm≤Px≤Pp/(14−0.045Pp), and 10 μm≤Py≤Pp/(11.5−0.032Pp), such that moire patterns are not produced by the condenser sheets and the liquid crystal display panel, and the condenser sheets do not significantly reduce the luminance from the liquid crystal display. ]