Touch control display device and manufacturing method thereof

Patent metadata

Field	Value
Publication number	US-2016266706-A1
Application number	US-201615006139-A
Country	US
Kind code	A1
Filing date	Jan 26, 2016
Priority date	Mar 9, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A touch control display device is provided. The touch control device includes: a display area including a gate electrode, a plurality of gate lines, a source electrode, a drain electrode, a plurality of source lines, a plurality of conversion lines, and a plurality of common electrodes. A first via hole may be formed on the gate line and exposes at least a portion of the gate line, and a second via hole may be formed on the common electrode and exposes at least a portion of the common electrodes. The plurality of conversion lines may include a plurality of first conversion lines and a plurality of second conversion lines. The plurality of first conversion lines may be electrically connected to the plurality of gate lines via the first via hole, and the plurality of second conversion lines may be electrically connected to the plurality of common electrodes via the second via hole.

First claim

What is claimed is:

1 . A touch control display device, comprising:
a display area and a non-display area, the display area comprising a gate metal layer, a source/drain metal layer, a conversion layer and a common electrode layer, the gate metal layer comprising a gate electrode and a plurality of gate lines, the source/drain metal layer comprising a source electrode, a drain electrode and a plurality of source lines, the conversion layer comprising a plurality of conversion lines, and the common electrode layer comprising a plurality of common electrodes that are independent from one another, wherein a first via hole is formed on the gate line and exposes at least a portion of the gate line, and a second via hole is formed on the common electrode and exposes at least a portion of the common electrodes, wherein the plurality of gate lines intersect the plurality of source lines, and the plurality of conversion lines have an extension direction parallel to that of the plurality of source lines, and wherein the plurality of conversion lines comprise a plurality of first conversion lines and a plurality of second conversion lines, the plurality of first conversion lines are electrically connected to the plurality of gate lines via the first via hole, and the plurality of second conversion lines are electrically connected to the plurality of common electrodes via the second via hole.

2 . The touch control display device according to claim 1 , further comprising a shift register unit and a display touch control driving unit, wherein the shift register unit is configured to supply gate driving signal to the plurality of gate lines via the plurality of first conversion lines, and the display touch control driving unit is configured to supply touch control driving signal to the plurality of common electrodes via the plurality of second conversion lines and/or to sense a touch control detection signal on the common electrodes via the plurality of second conversion lines.

3 . The touch control display device according to claim 2 , wherein the shift register unit and the display touch control driving unit are located at a same side or opposite sides of the display area.

4 . The touch control display device according to claim 1 , wherein the touch control display device comprises a base substrate, and the plurality of conversion lines have projection shadows on the base substrate in the vertical direction at least partly overlap those of the plurality of source lines.

5 . The touch control display device according to claim 1 , wherein a first insulation layer is covered on the gate line, a second insulation layer covers the source electrode and the drain electrode, and a third insulation layer covers the second insulation layer and the common electrode, wherein the source electrode and drain electrode are formed on the first insulation layer, and the common electrode is formed on the second insulation layer, and wherein the first via hole penetrates the first insulation layer, the second insulation layer and the third insulation layer, and the second via hole penetrates the third insulation layer.

6 . The touch control display device according to claim 5 , further comprising a pixel electrode disposed on the third insulation layer and a third via hole provided on the source electrode or the drain electrode, wherein the third via hole penetrates the second insulation layer and the third insulation layer and exposes at least a portion of the source electrode or the drain electrode, and the pixel electrode is electrically connected to the source electrode or the drain electrode via the third via hole.

7 . The touch control display device according to claim 5 , further comprising a protection layer located on the third insulation layer and the plurality of conversion lines, a pixel electrode provided on the protection layer and a third via hole provided on the source electrode or the drain electrode, wherein the protection layer covers the plurality of conversion lines, the third via hole penetrates the second insulation layer, the third insulation layer and the protection layer and exposes at least a portion of the source electrode or the drain electrode, and the pixel electrode is electrically connected to the source electrode or the drain electrode via the third via hole.

8 . The touch control display device according to claim 1 , wherein a first insulation layer is covered on the gate line, a second insulation layer covers the source electrode and the drain electrode, and a third insulation layer covers the conversion lines and the second insulation layer, wherein the source electrode and drain electrode are formed on the first insulation layer, the conversion lines are formed on the second insulation layer, and the common electrode is formed on the third insulation layer, and wherein the first via hole penetrates the first insulation layer, and the second insulation layer, and the second via hole penetrates the third insulation layer.

9 . The touch control display device according to claim 8 , further comprising a pixel electrode interposed between the conversion lines and the third insulation layer and a third via hole provided on the source electrode or the drain electrode, wherein the third via hole penetrates the second insulation layer and exposes at least a portion of the source electrode or the drain electrode, and pixel electrode is electrically connected to the source electrode or the drain electrode via the third via hole.

10 . The touch control display device according to claim 1 , wherein any one of the first conversion lines is electrically connected to only one of the gate lines.

11 . The touch control display device according to claim 10 , wherein any one of the gate lines is electrically connected to at least one of the first conversion lines.

12 . The touch control display device according to claim 1 , wherein any one of the second conversion lines is electrically connected to only one of the common electrodes.

13 . The touch control display device according to claim 12 , wherein any one of the common electrodes is electrically connected to at least one of the second conversion lines.

14 . The touch control display device according to claim 1 , wherein the conversion layer further comprises a plurality of redundant lines that are parallel to the plurality of conversion lines, and any one of the redundant lines is electrically connected to only one of the common electrodes.

15 . The touch control display device according to claim 14 , wherein any one of the common electrodes is electrically connected to at least one of the redundant lines, and the redundant lines have a resistivity smaller than that of the common electrodes.

16 . A manufacturing method of a touch control display device, comprising:
providing a base substrate; forming, on the base substrate, a thin film transistor element layer comprising a gate metal layer and a source/drain electrode metal layer, wherein the gate metal layer comprises a gate electrode and a plurality of gate lines, and the source/drain electrode metal layer comprises a source electrode, a drain electrode and a plurality of source lines; forming a common electrode layer on the thin film transistor element layer, and patterning the common electrode layer to form a plurality of common electrodes that are independent from one another; forming a third insulation layer on the common electrode and the thin film transistor element layer; forming a conversion layer on the third insulation layer, and patterning the conversion layer to form a plura

Assignees

• Shanghai Tianma Microelectronics Co Ltd
• Tianma Microelectronics Co Ltd

Inventors

• Lu Feng
• Qian Xu
• Jiang Wenxin
• Ma Junchao
• Wu Yong

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G06F3/0412 Primary

  Digitisers structurally integrated in a display · CPC title

• G06F3/0443

  using a single layer of sensing electrodes · CPC title