Touch screen-integrated display device and method for fabricating the same
First Claim
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1. A touch screen-integrated display device comprising:
- a plurality of gate lines disposed in a first direction on a substrate, the plurality of gate lines including a first gate line and a second gate line that is adjacent to the first gate line without any intermediate gate lines between the first gate line and the second gate line;
a plurality of data lines disposed in a second direction on the substrate that is different from the first direction, the plurality of data lines including a first data line and a second data line that is adjacent to the first data line without any intermediate data lines between the first data line and the second data line;
a touch sensing line disposed in the second direction, the touch sensing line disposed between the first data line and the second data line on the substrate;
a plurality of subpixel areas defined by the plurality of gate lines, the plurality of data lines, and the touch sensing line, and including a first transistor and a second transistor, wherein the first transistor is electrically connected to the first data line and the first gate line and disposed on a left side of the first data line, and drives a first subpixel within the plurality of subpixel areas based on a voltage on the first data line, and the second transistor is electrically connected to the second data line and the second gate line, disposed on a right side of the second data line, and drives a second subpixel within the plurality of subpixel areas based on a voltage on the second data line;
wherein at least one of the first transistor or the second transistor comprises;
a gate electrode;
an active layer on the gate electrode;
a source electrode and a drain electrode on the active layer;
a gate insulator between the gate electrode and the active layer;
a pixel electrode including a first portion and a second portion, the first portion of the pixel electrode on the drain electrode and the second portion of the pixel electrode on the gate insulator; and
a sensing contact part provided on the gate insulator and connected to the touch sensing line, the sensing contact part including a first sensing contact pattern and a second sensing contact pattern, andwherein the second sensing contact pattern comprises a same material as the pixel electrode;
wherein the first gate line includes a first protrusion disposed at an intersection between the touch sensing line and the first gate line, and the second gate line includes a second protrusion disposed at an intersection between the touch sensing line and the second gate line, wherein the first protrusion protrudes from the first gate line in a first direction and the second protrusion protrudes from the second gate line away from the first protrusion in a second direction that is opposite the first direction,wherein the first protrusion overlaps the drain electrode of the first transistor, and the second protrusion overlaps the drain electrode of the second transistor.
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Abstract
There is provided a touch screen-integrated display device including a plurality of gate lines, a plurality of data lines, a touch sensing line, a plurality of subpixel areas, a gate electrode provided in each of the subpixel areas, an active layer, a source electrode and a drain electrode, a gate insulator, a pixel electrode, and a sensing contact part. The sensing contact part includes a portion that is formed of the same material as the pixel electrode.
Further, there is provided a method for fabricating a touch screen-integrated display device, including forming a gate electrode, forming an active layer, a source electrode, a drain electrode, and a data line, forming a pixel electrode and a touch sensing line, and forming a common electrode to be overlapped with the pixel electrode. Thus, there is an effect of reducing the number of mask processes.
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Citations
21 Claims
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1. A touch screen-integrated display device comprising:
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a plurality of gate lines disposed in a first direction on a substrate, the plurality of gate lines including a first gate line and a second gate line that is adjacent to the first gate line without any intermediate gate lines between the first gate line and the second gate line; a plurality of data lines disposed in a second direction on the substrate that is different from the first direction, the plurality of data lines including a first data line and a second data line that is adjacent to the first data line without any intermediate data lines between the first data line and the second data line; a touch sensing line disposed in the second direction, the touch sensing line disposed between the first data line and the second data line on the substrate; a plurality of subpixel areas defined by the plurality of gate lines, the plurality of data lines, and the touch sensing line, and including a first transistor and a second transistor, wherein the first transistor is electrically connected to the first data line and the first gate line and disposed on a left side of the first data line, and drives a first subpixel within the plurality of subpixel areas based on a voltage on the first data line, and the second transistor is electrically connected to the second data line and the second gate line, disposed on a right side of the second data line, and drives a second subpixel within the plurality of subpixel areas based on a voltage on the second data line; wherein at least one of the first transistor or the second transistor comprises; a gate electrode; an active layer on the gate electrode; a source electrode and a drain electrode on the active layer; a gate insulator between the gate electrode and the active layer; a pixel electrode including a first portion and a second portion, the first portion of the pixel electrode on the drain electrode and the second portion of the pixel electrode on the gate insulator; and a sensing contact part provided on the gate insulator and connected to the touch sensing line, the sensing contact part including a first sensing contact pattern and a second sensing contact pattern, and wherein the second sensing contact pattern comprises a same material as the pixel electrode; wherein the first gate line includes a first protrusion disposed at an intersection between the touch sensing line and the first gate line, and the second gate line includes a second protrusion disposed at an intersection between the touch sensing line and the second gate line, wherein the first protrusion protrudes from the first gate line in a first direction and the second protrusion protrudes from the second gate line away from the first protrusion in a second direction that is opposite the first direction, wherein the first protrusion overlaps the drain electrode of the first transistor, and the second protrusion overlaps the drain electrode of the second transistor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for fabricating a touch screen-integrated display device, the method comprising:
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forming a gate electrode on a substrate using a first mask process; forming a gate insulator over the gate electrode using a second mask process; forming a semiconductor layer and an electrode metal layer on the gate insulator using the second mask process; forming an active layer, a source electrode, a drain electrode, and a data line using the second mask process, the source electrode and the drain electrode formed from the electrode metal layer; sequentially forming a first transparent conductive material layer on a portion of the drain electrode and a sensing metal layer on the gate insulator using a third mask process; forming a pixel electrode from the first transparent conductive material layer and a touch sensing line and a sensing contact part from the sensing metal layer using the third mask process; forming a protective layer over the pixel electrode and the touch sensing line using a fourth mask process; forming a contact hole through the protective layer that exposes a portion of the sensing contact part using the fourth mask process; forming a second transparent conductive material layer on the protective layer that is in contact with the sensing contact part via the contact hole using a fifth mask process; and forming a common electrode that is overlapped with the pixel electrode from the second transparent conductive material layer through the fifth mask process. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A touch screen-integrated display device comprising:
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a plurality of gate lines extending along a first direction on a substrate, the plurality of gate lines including a first gate line and a second gate line that is adjacent to the first gate line without any intermediate gate lines between the first gate line and the second gate line; a plurality of data lines extending along a second direction, the plurality of data lines on a gate insulator that is on the substrate, wherein the plurality of data lines includes a first data line; a touch sensing line between the plurality of data lines on the substrate; a first subpixel at an intersection of the first gate line and the first data line, the first subpixel including; a first transistor that is electrically connected to the first data line and the first gate line and disposed on a left side of the first data line, and drives the first subpixel based on a first voltage on the first data line, the first transistor including; a gate electrode on the substrate, a part of the gate insulator over the gate electrode, an active layer on the part of the gate insulator that is over the gate electrode, a drain electrode on the active layer, a source electrode on the active layer, and a pixel electrode that is electrically connected to the drain electrode; a second subpixel at an intersection of the second gate line and the first data line, the second subpixel including a second transistor that is electrically connected to the first data line and the second gate line and disposed on a right side of the first data line, and drives the second subpixel within based on a second voltage on the first data line, and a sensing contact part on the gate insulator, the sensing contact part connected to the touch sensing line, and wherein a portion of the sensing contact part comprises a same material as the pixel electrode; wherein the first gate line includes a first protrusion disposed at an intersection between the touch sensing line and the first gate line, and the second gate line includes a second protrusion disposed at an intersection between the touch sensing line and the second gate line, wherein the first protrusion protrudes from the first gate line in a first direction and the second protrusion protrudes from the second gate line away from the first protrusion in a second direction that is opposite the first direction, wherein the first protrusion overlaps the drain electrode of the first transistor, and the second protrusion overlaps the drain electrode of the second transistor. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification
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Current AssigneeLG Display Co., Ltd.
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Original AssigneeLG Display Co., Ltd.
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InventorsJeon, Yoongu, Lee, Ru-Da, Kim, Jonghwan
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Primary Examiner(s)Lin, Hang
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Application NumberUS15/379,221Publication NumberTime in Patent Office1,063 DaysField of SearchUS Class CurrentCPC Class CodesG02F 1/13338 Input devices, e.g. touch p...G06F 2203/04103 Manufacturing, i.e. details...G06F 3/0412 Digitisers structurally int...G06F 3/04164 Connections between sensors...G06F 3/0443 using a single layer of sen...G09G 2310/08 Details of timing specific ...G09G 3/3674 Details of drivers for scan...G09G 3/3685 Details of drivers for data...
