Patent ID: 9235297
Filing Date: 2016-01-12
CPC Classification: G02F,G06F,G09G

Claim Text:
1. A capacitive touch sensing apparatus, comprising: a protecting layer; a sensing layer comprising a single layer, disposed under the protecting layer, for sensing a touch to generate a position signal; a direct-current (DC) common voltage signal layer electrically connected with a DC voltage for shielding against signal interference; a liquid crystal display (LCD) panel; and a display controller coupled to the DC common voltage signal layer for generating an alternating current source driving signal as part of a panel control signal while driving the LCD panel, wherein a source displacement of the source driving signal is symmetrical to the DC voltage, wherein the DC voltage of the panel control signal is applied by the display controller to the LCD panel during sensing of the touch to prevent the panel control signal from coupling to the position signal, wherein the DC voltage is a DC signal of 0 volts, wherein the capacitive touch sensing apparatus does not include a shielding layer disposed between the DC common voltage signal layer and the sensing layer and the DC common voltage signal layer is directly attached below the sensing layer, and wherein the LCD panel displays image data by dot inversion while driving the LCD panel.