Touch sensor integrated display device

Patent metadata

Field	Value
Publication number	US-2017192593-A1
Application number	US-201615388764-A
Country	US
Kind code	A1
Filing date	Dec 22, 2016
Priority date	Dec 30, 2015
Publication date	Jul 6, 2017
Grant date	—

Abstract

The present disclosure relates to a touch sensor integrated display device capable of preventing generation of a defective image between touch/common electrodes, which includes a plurality of gate lines and a plurality of data lines intersecting the gate lines, a plurality of pixel electrodes, a plurality of touch/common electrodes and a plurality of touch/common lines. The plurality of pixel electrodes are respectively disposed in regions defined by intersections of the plurality of data lines and the plurality of gate lines and provided with data voltages. The plurality of touch/common electrodes are arranged to generate electric fields with the plurality of pixel electrodes and to correspond to parts of the plurality of pixel electrodes. The plurality of touch/common lines are respectively connected to the plurality of touch/common electrodes. Each touch/common electrode overlap with at least one gate line shared by neighboring touch/common electrodes arranged in a data line arrangement direction.

First claim

1 . A touch sensor integrated display device comprising:
a plurality of gate lines and a plurality of data lines intersecting the gate lines; a plurality of pixel electrodes respectively disposed in regions defined by intersections of the plurality of data lines and the plurality of gate lines; a plurality of touch and common electrodes arranged in a plurality of rows, the touch and common electrodes configured to generate electric fields with the plurality of pixel electrodes and to correspond to parts of the plurality of pixel electrodes; and a plurality of touch and common lines respectively coupled to the plurality of touch and common electrodes, wherein each touch and common electrode is overlapped by at least one gate line that overlaps and is shared by a neighboring touch and common electrode that is adjacent in a data line arrangement direction.

2 . The touch sensor integrated display device according to claim 1 , wherein each touch and common electrode includes at least one protrusion in the data line arrangement direction, and protrusions of touch and common electrodes adjacent to each other in the data line arrangement direction are alternately arranged in a gate line arrangement direction.

3 . The touch sensor integrated display device according to claim 1 , wherein each touch and common electrode includes at least one protrusion and at least one recess alternately disposed at a side facing the neighboring touch and common electrode in the data line arrangement direction, and the protrusions of the touch and common electrodes are disposed in recesses of the neighboring touch and common electrodes in the data line arrangement direction.

4 . The touch sensor integrated display device according to claim 3 , wherein the protrusions and recesses of the touch and common electrodes arranged in a first row and the protrusions and recesses of the touch and common electrodes arranged in a last row are disposed along only one side that faces the respective neighboring touch and common electrodes arranged in the data line arrangement direction, and the protrusions and recesses of the touch and common electrodes arranged between the first row and the last row are disposed at each of two sides that respectively face neighboring touch and common electrodes arranged in the data line arrangement direction.

5 . The touch sensor integrated display device according to claim 4 , wherein the protrusions and recesses of the touch and common electrodes arranged between the first row and the last row include first protrusions and first recesses alternately disposed at a first side and second protrusions and second recesses alternately disposed at a second side, and the first protrusions and the second protrusions are alternately arranged and the first recesses and the second recesses are alternately arranged.

6 . The touch sensor integrated display device according to claim 5 , wherein the touch and common electrodes arranged in the first row and the touch and common electrodes arranged in the last row have a same size, and a size of touch and common electrodes arranged between the first row and the last row is greater than the size of the touch and common electrodes arranged in the first row and the last row by a size of the protrusions formed at the second side.

7 . The touch sensor integrated display device according to claim 5 , wherein a number of gate lines shared by the touch and common electrodes arranged in the first row equals a number of gate lines shared by the touch and common electrodes arranged in the last row, and
a number of gate lines shared by the touch and common electrodes arranged between the first row and the last row is greater than the number of gate lines shared by the touch and common electrodes arranged in the first row and the last row.

8 . The touch sensor integrated display device according to claim 1 , wherein gate pulses are sequentially supplied to the plurality of gate lines, and a number of gate lines that overlap and are shared by adjacent touch and common electrodes in the data line arrangement direction is twice a number of gate pulses that partially overlap with a preceding one of the gate pulses.

9 . The touch sensor integrated display device according to 8, wherein overlapping of gate pulses includes overlapping of a rising edge and a falling edge of gate pulses.

10 . A display device, comprising:
a plurality of gate lines extending in a first direction; a plurality of data lines extending in a second direction that is transverse to the first direction; and a plurality of touch and common electrodes configured to receive a common voltage during a display driving period, and to sense a touch during a touch driving period, the plurality of touch and common electrodes being arranged in rows corresponding to the first direction and in columns corresponding to the second direction, wherein at least a portion of each touch and common electrode in a first row is overlapped by at least one gate line that overlaps at least a portion of each touch and common electrode in a second row.

11 . The display device according to claim 10 , wherein each touch and common electrode in the first row includes at least one protrusion extending toward an adjacent touch and common electrode in the second row, and each touch and common electrode in the second row includes at least one protrusion extending toward an adjacent touch and common electrode in the first row.

12 . The display device according to claim 11 , wherein each touch and common electrode in the second row further includes at least one protrusion extending toward an adjacent touch and common electrode in a third row.

13 . The display device according to claim 10 , wherein each touch and common electrode in the first row includes at least one protrusion and at least one recess alternately arranged along a lower side of the touch and common electrodes in the first row, and each touch and common electrode in the second row includes at least one protrusion and at least one recess alternately arranged along an upper side of the touch and common electrodes in the second row, wherein the protrusions of the touch and common electrodes in the first row are accommodated in the recesses of the touch and common electrodes in the second row, and the protrusions of the touch and common electrodes in the second row are accommodated in the recesses of the touch and common electrodes in the first row.

14 . The display device according to claim 13 , wherein each touch and common electrode in the second row further includes at least one protrusion and at least one recess alternately arranged along a lower side of the touch and common electrodes in the second row.

15 . The display device according to claim 14 , wherein each touch and common electrode in a last row includes at least one protrusion and at least one recess alternately arranged along an upper side of the touch and common electrodes in the last row.

16 . A method, comprising:
forming a first row of touch and common electrodes in a display region of a display device, each of the touch and common electrodes of the first row including a lower protrusion that extends in a column direction; forming a second row of touch and common electrodes in the display region, each of the touch and common electrodes of the second row including an upper protrusion that extends in the column direction toward an adjacent one of the touch and common electrodes in the first row; and forming a plurality of gate lines extending in a row direction, at least one of the gate lines overlapping the lower

Assignees

• Lg Display Co Ltd

Inventors

• Cho Seungwan
• Hwang Kwangjo
• Hong Sungho
• So Byeongseong
• Rhe Ruda

Classifications

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G09G3/3677

  suitable for active matrices only · CPC title

• G06F3/044

  by capacitive means · CPC title

• G09G2310/06

  Details of flat display driving waveforms · CPC title

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title