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AssigneeLG. Philips LCD Co., Ltd.
InventorsIn Jae Chung, In Ho Ahn, Sang Hyuck Bae
Estimating the term…
A touch-sensing display screen includes an upper transparent substrate, a lower substrate opposite the upper substrate, and a backlight unit having an infrared light source configured to radiate infrared light through the upper substrate in a first direction. A transparent window is disposed in alignment with the infrared light source and between the upper and lower transparent substrates. A portion of the infrared light radiated in the first direction is reflected back through the upper substrate and through the transparent window in a second direction by an object touching a surface of the upper transparent substrate. A pixel thin-film transistor on the lower substrate is configured to activate a pixel electrode, and an infrared light-sensing thin-film transistor is configured to sense the infrared light received through the upper substrate in the second direction, and output an infrared light-sense signal in response thereto.
A touch-sensing display screen comprising:
The touch-sensing display screen of claim 12, further comprising a matrix of pixel areas, each pixel area having a pixel thin-film transistor, and some of the pixel areas having an infrared light-sensing thin-film transistor, wherein identification of the gate and data lines that activate a selected pixel thin-film transistor facilitates identification of a corresponding active infrared light-sensing transistor.
A display having a multi-touch sensing function, comprising:
A method of driving a display having a multi-touch sensing function, comprising:
Dependencies are inferred from the claim text.