Touch‐screen panel integrated into 12.1‐in. a‐Si:H TFT‐LCD |
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Authors: | Bong Hyun You Byoung Jun Lee Sang Youn Han Seiki Takahashi Brian H. Berkeley Nam Deog Kim Sang Soo Kim |
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Affiliation: | Samsung Electronics Co., Ltd., LCD Business, 200 Myeongam‐Ri, Tangjeong‐Myeon, Asan‐city, Chungcheongnam‐do, 336‐841 Korea |
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Abstract: | Abstract— A touch‐screen‐panel (TSP) embedded 12.1‐in. LCD employing a standard existing a‐Si:H TFT‐LCD process has been successfully developed. Compared with conventional external touch‐screen panels, which use additional components to detect touch events, the new internal TSP exhibits a clearer image and improved touch feeling, as well as increased sensing speed using discrete sensing lines to enable higher‐speed sensing functions including handwriting. The new internal digital switching TSP can be fabricated with low cost because it does not require any additional process steps compared to a standard a‐Si:H TFT‐LCD. |
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Keywords: | TFT‐LCD touch‐screen panel TSP internal TSP handwriting digital‐switching TSP touch sensor amorphous silicon |
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