TOUCH DISPLAY PANELS AND MANUFACTURE METHODS THEREOF

• US 20110063238A1
• Filed: 09/09/2010
• Published: 03/17/2011
• Est. Priority Date: 09/15/2009
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: InnoLux Corporation
• Inventors: YEH, Guan-Hua, LIAO, Wei-Lun, WU, Hong-Gi, LIU, Chia-Mei, CHENG, Tsai-Lai
• Granted Patent: US 9,081,446 B2
• Time in Patent Office: Days
• US Class Current: 345/173
• 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;

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 the corresponding gate line and the corresponding data line; and

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

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

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

a 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 manufacture method of a touch display panel comprising:

providing a substrate;

forming a gate and a first electrode on the substrate;

forming a dielectric layer on the substrate to cover the gate and the first electrode;

forming a channel layer on a portion of the dielectric layer which is over the gate and forming a second electrode on a portion of the dielectric layer which is over the first electrode;

forming a source and a drain on the channel layer and forming an output electrode on the second electrode;

forming a protection layer on the substrate and forming a via hole on the protection layer, wherein the via hole is disposed on the drain; and

forming a pixel electrode on the substrate, wherein the pixel electrode is electrically connected to the drain through the via hole.

9. The manufacture method as claimed in claim 8, wherein the second electrode is electrically connected to the output electrode through a side portion of the second electrode.

10. The manufacture method as claimed in claim 8, wherein the first electrode comprises metal.

11. The manufacture method as claimed in claim 8, wherein the second electrode comprises a semiconductor layer and a heavily doped layer.

12. The manufacture method as claimed in claim 8, wherein the output electrode comprises metal.

13. The manufacture method as claimed in claim 8 further comprising:

forming an auxiliary gate on the substrate, wherein the dielectric layer covers the auxiliary gate;

forming an auxiliary channel layer on the portion of the dielectric layer which is over the auxiliary gate; and

forming an auxiliary source and an auxiliary drain on the auxiliary channel layer, wherein the auxiliary source is electrically connected to the second electrode, and the protection layer covers the auxiliary source and the auxiliary drain.

14. 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;

a plurality of detection scan lines disposed on the substrate, wherein each detection scan line is disposed next to one data 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 the corresponding gate line and the 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 is electrically connected to the corresponding common line and the corresponding auxiliary transistor.

15. The touch display panel as claimed in claim 14, 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.

16. The touch display panel as claimed in claim 15, wherein each detection capacitor comprises:

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

the dielectric layer disposed on the first electrode; and

a 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.

17. The touch display panel as claimed in claim 16, wherein the second electrode is electrically connected to the source of the auxiliary transistor through a side portion of the second electrode.

18. The touch display panel as claimed in claim 17, wherein the first electrode comprises metal.

19. The touch display panel as claimed in claim 16, wherein the second electrode comprises a semiconductor layer and a heavily doped layer.

20. The touch display panel as claimed in claim 15, wherein the output electrode comprises metal.