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US 11,906,835 B2Granted
Touch display panel and display device
AssigneeWuhan China Optoelectronics Semiconductor Display Technology Co., Ltd.
InventorsZuzhao Xu, Xiaoxia Zhang
Life of this patent
Estimating the term…
Abstract
A touch display panel and a display device utilize one thin film transistor is configured for one touch wiring. The thin film transistor is turned on during the lighting test and a corresponding electrical signal is input, which can change the floating state of the touch wiring. The coupling effect between the touch wiring and a data line can be reduced or eliminated, which reduces interference with a data signal, so that bright-line phenomenon caused by the floating touch wiring interfering with the data line during the lighting test can be improved or eliminated.
Claims12
A touch display panel comprising:
- a plurality of touch wiring groups, each touch wiring group comprising at least one touch wiring extending along a first direction;
- a plurality of thin film transistors, one terminal of at least one of the plurality of thin film transistors being electrically connected to the corresponding touch wiring, the one terminal is one of a source and a drain;
- a plurality of data line groups, the plurality of data line groups and plurality of touch wiring groups being alternately arranged in sequence along a second direction, each data line group comprising at least one data line extending along the first direction;
- a plurality of lighting test signal lines, the plurality of lighting test signal lines extending along the second direction, and, in a third direction, projection of the plurality of lighting test signal lines at least partially overlapping projection of the plurality of touch wiring groups;
- a control signal line electrically connected to the plurality of thin film transistors;
- a first input signal line electrically connected to at least part of other terminals of the plurality of thin film transistors, one of the other terminals being the other of the source and the drain;
- and
- a second input signal line, electrically connected to another part of the other terminals of the plurality of thin film transistors,
- wherein the touch wirings of the plurality of touch wiring groups comprise an odd touch wiring and an even touch wiring alternately arranged in sequence along the second direction,
- the first input signal line is connected to the odd touch wiring through the corresponding thin film transistor, the second input signal line is connected to the even touch wiring through the corresponding thin film transistor.
7 more elements
A display device comprising a touch display panel, the touch display panel comprising:
- a plurality of touch wiring groups, each touch wiring group comprising at least one touch wiring extending along a first direction;
- a plurality of thin film transistors, one terminal of at least one of the plurality of thin film transistors being electrically connected to the corresponding touch wiring, the one terminal is one of a source and a drain, wherein the first direction is interlaced with the second direction and the third direction is perpendicular to the first direction and the second direction;
- a plurality of data line groups, the plurality of data line groups and plurality of touch wiring groups being alternately arranged in sequence along a second direction, each data line group comprising at least one data line extending along the first direction;
- a plurality of lighting test signal lines, the plurality of lighting test signal lines extending along the second direction, and, in a third direction, projection of the plurality of lighting test signal lines at least partially overlapping projection of the plurality of touch wiring groups;
- a control signal line electrically connected to the plurality of thin film transistors;
- a first input signal line electrically connected to at least part of other terminals of the plurality of thin film transistors, one of the other terminals being the other of the source and the drain;
- and
- a second input signal line, electrically connected to another part of the other terminals of the plurality of thin film transistors,
- wherein the touch wirings of the plurality of touch wiring groups comprise an odd touch wiring and an even touch wiring alternately arranged in sequence along the second direction,
- the first input signal line is connected to the odd touch wiring through the corresponding thin film transistor, the second input signal line is connected to the even touch wiring through the corresponding thin film transistor.
7 more elements
Dependencies are inferred from the claim text.