发明名称 |
Integrated display and touch screen |
摘要 |
Liquid crystal display (LCD) touch screens integrate touch sensing elements with display circuitry and may include in-plane-switching (IPS) LCDs. A method of operating the integrated touch sensing elements with the display circuitry includes dividing touch-sensing circuitry of the touch screen into a plurality of drive segments, each drive segment overlapping one or more display rows; updating the display at a predetermined refresh rate; stimulating the plurality of drive segments at a predetermined scan rate; and changing the sequence of stimulating the plurality of drive segments as required to prevent simultaneously stimulating a drive segment that overlaps a display row currently being updated. |
申请公布号 |
US9268429(B2) |
申请公布日期 |
2016.02.23 |
申请号 |
US201314047960 |
申请日期 |
2013.10.07 |
申请人 |
Apple Inc. |
发明人 |
Hotelling Steve Porter;Chen Wei;Krah Christoph Horst;Elias John Greer;Yao Wei Hsin;Zhong John Z.;Hodge Andrew Bert;Land Brian;den Boer Willem |
分类号 |
G09G3/36;G06F3/041;G06F3/044;G02F1/1333 |
主分类号 |
G09G3/36 |
代理机构 |
Morrison & Foerster LLP |
代理人 |
Morrison & Foerster LLP |
主权项 |
1. A method of operating an integrated liquid crystal display touch screen whereby updating of the display can be done concurrently with touch scanning, the method comprising:
dividing touch-sensing circuitry of the touch screen into a plurality of drive segments, each drive segment overlapping one or more display rows; updating portions of the display at a predetermined refresh rate during each frame; concurrently with the updating of portions of the display, stimulating the plurality of drive segments at a predetermined scan rate during each frame; and changing a sequence of stimulating the plurality of drive segments from a first sequence to a second sequence, different from the first sequence, so as to permit the concurrent updating and stimulating, while preventing simultaneously stimulating a drive segment that overlaps a display row currently being updated, wherein stimulating the plurality of drive segments in a first sequence and a second sequence occurs during each frame. |
地址 |
Cupertino CA US |