US 9,810,814 B2
Display device
Gyu Ho Lee, Seoul (KR); Won Bong Jang, Seoul (KR); and Nam Kim, Yongin-si (KR)
Assigned to LG DISPLAY CO., LTD., Seoul (KR)
Filed by LG DISPLAY CO., LTD., Seoul (KR)
Filed on Dec. 24, 2014, as Appl. No. 14/582,739.
Claims priority of application No. 10-2014-0080484 (KR), filed on Jun. 30, 2014; and application No. 10-2014-0152941 (KR), filed on Nov. 5, 2014.
Prior Publication US 2015/0378061 A1, Dec. 31, 2015
Int. Cl. G06F 3/044 (2006.01); G02B 1/14 (2015.01); G02B 1/04 (2006.01); G02F 1/1333 (2006.01); G06F 3/041 (2006.01); H01L 27/32 (2006.01); H01L 51/00 (2006.01); H01L 51/52 (2006.01); G02B 5/20 (2006.01)
CPC G02B 1/14 (2015.01) [G02B 1/04 (2013.01); G02B 5/201 (2013.01); G02F 1/133308 (2013.01); G06F 3/044 (2013.01); G06F 3/0412 (2013.01); H01L 27/323 (2013.01); H01L 51/004 (2013.01); H01L 51/5237 (2013.01); H01L 51/5253 (2013.01); G02F 2001/133331 (2013.01); G06F 2203/04102 (2013.01); H01L 2251/5338 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A display device comprising:
a display panel configured to include a first substrate and a second substrate; and
a cover substrate disposed on the display panel and configured to contain a resin composition of a mixture of polymethylmethacrylate (PMMA) and a carbonate compound,
wherein the carbonate compound is ethylene carbonate,
wherein the carbonate compound is included into the cover substrate in an amount of 5 wt % to 20 wt %,
wherein the PMMA is included into the cover substrate in an amount of 80 wt % to 90 wt %,
wherein the display device further comprises a touch panel interposed between the display panel and the cover substrate and configured to include a touch substrate loaded with sensing electrodes, and
wherein the cover substrate is formed to have a transmittance above 90%, a haze below 1.0, a dielectric constant in a range of 4.0˜8.0, and an expansion rate below 0.02% when placed under a condition of a temperature of 70° C. and a relative humidity of about 90% for 96 hours.