US 11,703,966 B2
Touch display module
Ming Chung Liu, Miaoli County (TW); Yi Lung Yang, Taoyuan (TW); Ya Chin Chang, Taichung (TW); Po Yu Hsiao, Taoyuan (TW); Sheng Fa Liu, Taoyuan (TW); Wei Chou Chen, Taoyuan (TW); Xue Fen Wang, Taoyuan (TW); Yong Bin Ke, Xiamen (CN); Chia Jui Lin, Taoyuan County (TW); Shao Jie Liu, Xiamen (CN); Xue Long Zhang, Yingshang County (CN); and Xian Bin Xu, Xiamen (CN)
Assigned to TPK Advanced Solutions Inc., Fujian (CN)
Filed by TPK Advanced Solutions Inc., Fujian (CN)
Filed on Aug. 18, 2021, as Appl. No. 17/405,196.
Prior Publication US 2023/0064478 A1, Mar. 2, 2023
Int. Cl. G06F 3/041 (2006.01); G02F 1/1333 (2006.01); G02F 1/13363 (2006.01); G02F 1/1335 (2006.01)
CPC G06F 3/0412 (2013.01) [G02F 1/13338 (2013.01); G02F 1/133528 (2013.01); G02F 1/133638 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A touch display module, comprising:
a touch device; and
a polarizing element disposed on the touch device, the polarizing element comprising:
a linear polarizer; and
a retardation film assembly, wherein when an ambient light passes through the linear polarizer to generate a linearly polarized light, the linearly polarized light is converted into a circularly polarized light through the retardation film assembly, wherein a ratio of the linearly polarized light that is converted into the circularly polarized light is defined as a polarization ellipticity value of the retardation film assembly,
wherein an absolute value of the polarization ellipticity value is greater than 0.8 in a wavelength range of 450 nm to 650 nm, and
wherein a reflection rate of the ambient light passing through the polarizing element is less than 6% in the wavelength range of 450 nm to 650 nm.