Touch display device
A technology of touch display device and trigger signal, which is applied in the direction of instrument, electrical digital data processing, input/output process of data processing, etc.
Active Publication Date: 2016-08-03
INNOLUX CORP
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Problems solved by technology
However, due to the leakage current problem of the gate line driving circuit, the gate line driving circuit may not continue to enable the corresponding scan signal after the touch detection operation is completed.
Method used
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[0030] figure 1 It is a schematic diagram of the touch display device of the present invention. As shown in the figure, the touch display device 100 includes a substrate 110 , a pixel electrode layer 120 , a common electrode layer 130 , a liquid crystal layer 140 , a color filter layer 150 and a protection layer 160 . In this embodiment, the substrate 110 is an in-cell touch display panel with many pixels (not shown) and elements (not shown) for driving the pixels.
[0031] The pixel electrode layer 120 has a plurality of metal patterns (not shown) serving as pixel electrodes. The common electrode layer 130 has a plurality of patterned common electrodes EL. In this embodiment, the common electrodes EL are divided into groups G1 to G6. The common electrodes EL in each group are electrically connected to each other. Groups are electrically isolated. For example, the common electrodes of the group G1 are not electrically connected to the common electrodes of the groups G2 - ...
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A touch display device includes a touch display panel, which comprises a shift register unit. The shift register unit includes a first transistor, a second transistor, a third transistor, a fourth transistor, and a capacitor. A drain electrode of the first transistor receives a clock signal. A drain electrode and grid electrode of the second transistor are coupled for receiving a first trigger signal, and a source electrode of the second transistor is coupled to a grid electrode of the first transistor. A drain electrode of the third transistor is coupled to the source electrode of the second transistor, and a source electrode of the third transistor receives a first operation voltage, and a grid electrode of the third transistor receives a second trigger signal. A drain electrode of the fourth transistor is coupled to the source electrode of the first transistor, the source electrode of the fourth transistor receives a second operation voltage, and the grid electrode receives the second trigger signal. The capacitor is coupled between the grid electrode and the source electrode of the first transistor, and is made from a three-metal layer.
Description
technical field [0001] The present invention relates to a touch display device, in particular to a touch display device with a capacitance of a three-layer metal structure. Background technique [0002] When the touch structure of the touch display device is an in-cell touch display panel, the touch detection operation is usually arranged in a blanking time in each display frame. Each display frame period usually has an enabled period and a blank period. During the enabling period, the gate line driving circuit on the panel generates corresponding scanning signals. During the blank period, the gate line driving circuit stops generating any scan signal. At this time, the touch detection operation is started to determine whether the touch display device is touched and the position of the touch. After the detection is completed, continue to enable the scanning signal. However, since the gate line driving circuit has a leakage current problem, the gate line driving circuit m...
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IPC IPC(8): G06F3/041G06F3/044
Inventor 宋立伟高毓谦周协利黄郁迪张又哲陈忠乐陈弘勋
Owner INNOLUX CORP