Touch display panels and manufacture methods thereof

• US 9,081,446 B2
• Filed: 09/09/2010
• Issued: 07/14/2015
• Est. Priority Date: 09/15/2009
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: Liu, Chia-Mei, Cheng, Tsai-Lai, Liao, Wei-Lun, Yeh, Guan-Hua, Wu, Hong-Gi
• Primary Examiner(s): BALAOING, ARIEL A
• Application Number:
  US12/878,951
• Publication Number:
  US 20110063238A1
• Time in Patent Office: 1,769 Days
• US Class Current: 1/1
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0448 Details of the electrode shape, e.g. for enhancing the detection of touches, for generating specific electric field shapes, for enhancing display quality
• CPC Class Codes: H01L 27/12 the substrate being other than a semiconductor body, e.g. an insulating body
• CPC Class Codes: H01L 27/1214 comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
• CPC Class Codes: H01L 27/1255 integrated with passive devices, e.g. auxiliary capacitors
• CPC Class Codes: H01L 27/13 combined with thin-film or thick-film passive components

Abstract

A touch display panel is provided and includes a substrate, a plurality of gate lines, a plurality of data lines, a plurality of data output lines, a plurality of thin film transistors, and a plurality of detection capacitors. The gate lines are disposed on the substrate. The data lines are disposed on the substrate. The data lines and the gate lines define a plurality of pixel regions on the substrate. The data output lines are disposed on the substrate, and each data output line is disposed next to one data line. The thin film transistors are respectively disposed in the pixel regions. Each thin film transistor is electrically connected to the corresponding gate line and the corresponding data line. The detection capacitors are respectively disposed in the pixel regions. Each detection capacitor is electrically connected to the corresponding gate line and the corresponding data line.

Claims

1. A touch display panel comprising:

a substrate;

a plurality of gate lines disposed on the substrate;

a plurality of data lines disposed on the substrate, wherein the data lines and the gate lines define a plurality of pixel regions on the substrate, wherein each pixel region is composed by adjacent two data lines and adjacent two gate lines;

a plurality of data output lines disposed on the substrate, wherein each data output line is disposed next to one data line;

a plurality of thin film transistors respectively disposed in the pixel regions, wherein each thin film transistor is electrically connected to a corresponding gate line and a corresponding data line; and

a plurality of detection capacitors respectively disposed in the pixel regions, wherein each detection capacitor includes a first electrode electrically connected to the corresponding gate line and a second electrode electrically connected to the corresponding data output line.

2. The touch display panel as claimed in claim 1, wherein each detection capacitor comprises:

the first electrode disposed on the substrate and electrically connected to the corresponding gate line;

the dielectric layer disposed on the first electrode;

a second electrode disposed on the dielectric layer, wherein the second electrode, the dielectric layer, and the first electrode form a capacitor structure; and

an output electrode electrically connected to the second electrode and the corresponding data output line.

3. The touch display panel as claimed in claim 2, wherein the second electrode is electrically connected to the output electrode through a side portion of the second electrode.

4. The touch display panel as claimed in claim 2, wherein the first electrode comprises metal.

5. The touch display panel as claimed in claim 2, wherein the second electrode comprises a semiconductor layer and a heavily doped layer.

6. The touch display panel as claimed in claim 2, wherein the second electrode comprises amorphous silicon.

7. The touch display panel as claimed in claim 2, wherein the output electrode comprises metal.

8. A touch display panel comprising:

a substrate;

a plurality of gate lines disposed on the substrate;

a plurality of data lines disposed on the substrate, wherein the data lines and the gate lines define a plurality of pixel regions on the substrate, wherein each pixel region is composed by adjacent two data lines and adjacent two gate lines;

a plurality of detection scan lines disposed on the substrate, wherein each detection scan line is disposed next to one scan line;

a plurality of common lines disposed on the substrate;

a plurality of thin film transistors respectively disposed in the pixel regions, wherein each thin film transistor is electrically connected to a corresponding gate line and a corresponding data line;

a plurality of auxiliary transistors respectively disposed in the pixel regions, wherein each auxiliary transistor is electrically connected to the corresponding detection scan line and the corresponding data line; and

a plurality of detection capacitors respectively disposed in the pixel regions, wherein each detection capacitor includes a first electrode electrically connected to a corresponding common line and a second electrode electrically connected to a corresponding auxiliary transistor.

9. The touch display panel as claimed in claim 8, wherein each auxiliary transistor comprises:

a gate disposed on the substrate and electrically connected to the corresponding detection scan line;

a dielectric layer disposed on the gate;

a source and a drain disposed on the dielectric layer, wherein the drain is electrically connected to the corresponding data line; and

a protection layer disposed on the source and the drain.

10. The touch display panel as claimed in claim 9, wherein each detection capacitor comprises:

the first electrode disposed on the substrate and electrically connected to the corresponding common line;

the dielectric layer disposed on the first electrode; and

the second electrode disposed on the dielectric layer, wherein the second electrode, the dielectric layer, and the first electrode form a capacitor structure, and the source of the auxiliary transistor is electrically connected to the second electrode.

11. The touch display panel as claimed in claim 10, wherein the second electrode is electrically connected to the source of the auxiliary transistor through a side portion of the second electrode.

12. The touch display panel as claimed in claim 11, wherein the first electrode comprises metal.

13. The touch display panel as claimed in claim 10, wherein the second electrode comprises a semiconductor layer and a heavily doped layer.

14. The touch display panel as claimed in claim 9 further comprising an output, wherein the output electrode comprises metal.