Invention Grant
- Patent Title: Driving chip, circuit film, chip-on-film type driving circuit, and display device having built-in touchscreen
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Application No.: US15955490Application Date: 2018-04-17
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Publication No.: US10261628B2Publication Date: 2019-04-16
- Inventor: KiYong Kim , Youngwoo Jo
- Applicant: LG Display Co., Ltd.
- Applicant Address: KR Seoul
- Assignee: LG Display Co., Ltd.
- Current Assignee: LG Display Co., Ltd.
- Current Assignee Address: KR Seoul
- Agency: Fenwick & West LLP
- Priority: KR10-2016-0112239 20160831; KR10-2016-0174480 20161220
- Main IPC: G06F3/045
- IPC: G06F3/045 ; G06F3/041 ; G06F3/044 ; G02F1/1333

Abstract:
A display device having a built-in touchscreen and a driving chip, a circuit film, and a chip-on-film (COF) type driving circuit included in the display device. The COF type driving circuit performs data driving and touch driving in a combined manner. A source driving circuit outputs image data voltages through data channels. At least one touch driving circuit outputs touch driving signals through touch channels. The source driving circuit and the at least one touch driving circuit are mounted on an integrated circuit film. Data channel lines electrically connected to the data channels and touch channel lines electrically connected to the touch channels are disposed on the integrated circuit film. The noise avoidance line disposed on the integrated circuit film is located outward of an at least one outermost touch channel line.
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