Patent ID: 8994673
Filing Date: 2015-03-31
Classification: G06F

Abstract:
1. A display device with an integrated touch screen, comprising: a display panel including a touch screen provided in an active area of the display panel, and a display driver circuit provided in an inactive area of the display panel, the inactive area excluding the active area, the touch screen including a plurality of driving electrodes and a plurality of electrode lines, the plurality of electrode lines extending from the driving electrodes positioned in the active area to the display driver circuit positioned in the inactive area, the plurality of electrode lines not being electrically connected to each other within the active area but being electrically connected to each other within the inactive area, each of the driving electrodes including a plurality of sub driving electrodes positioned in the active area of the display panel but electrically connected to each other in the inactive area via the plurality of electrode lines that are electrically connected to each other in the inactive area, the touch screen further including a plurality of sensing electrodes disposed between the sub driving electrodes and formed in the active area of the panel, and the display driver circuit configured to apply, via the plurality of electrode lines, a common voltage to the driving electrodes and the sensing electrodes or a touch driving voltage to the driving electrodes according to a driving mode of the display panel, wherein the display driver circuit includes a common voltage generator configured to generate the common voltage, and wherein the display driver circuit further includes: a synchronization signal generator configured to generate a first synchronization signal when the driving mode of the display panel is in a display mode, and to generate a second synchronization signal when the driving mode of the display panel is in a touch mode, and a switching unit configured to apply the generated common voltage to the driving electrodes and the sensing electrodes when the first synchronization signal is received from the synchronization signal generator, and to apply the touch driving voltage to the driving electrodes when the second synchronization signal is received from the synchronization signal generator.