US 8,134,537 B2Granted

Touch display panel

AssigneeAu Optronics Corporation

InventorsZeng-De Chen, Tsung-Chin Cheng, Weng-Bing Chou, Seok-Lyul Lee, Wei-Ming Huang

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Abstract

A touch display panel including a first substrate, a second substrate and a liquid crystal layer is provided. The first substrate includes sensing areas and a non-sensing area outside the sensing areas. Each sensing area is provided with a first electrode thereon. The second substrate includes main spacers, sensing protrusions, first sub-spacers and second sub-spacers. The main spacers are connected to the non-sensing area. The sensing protrusions are corresponding to the sensing area and respectively have a second electrode. A sensing gap exists between each second electrode and the corresponding first electrode. The first sub-spacers are corresponding to the non-sensing area and respectively keep a first sub-spacer gap from the first substrate. The second sub-spacers are corresponding to the non-sensing area and respectively keep a second sub-spacer gap from the first substrate. The sensing gap is greater than the first sub-spacer gap and less than the second sub-spacer gap.

Claims24

Dependent claims

A touch display panel, comprising:

a first substrate, comprising a plurality of sensing areas and a non-sensing area located outside the sensing areas, wherein the first substrate comprises a plurality of first electrodes respectively within each of the sensing areas;
a second substrate, disposed oppositely to the first substrate, wherein the second substrate comprises:
a plurality of main spacers, disposed at a surface of the second substrate facing the first substrate, wherein the main spacers are connected to the non-sensing area of the first substrate;
a plurality of sensing protrusions, disposed at the surface of the second substrate facing the first substrate and respectively corresponding to the sensing areas of the first substrate, wherein each of the sensing protrusions has a second electrode disposed thereon and there is a sensing gap between the first electrode and the second electrode at each of the sensing protrusions;
a plurality of first sub-spacers, disposed at the surface of the second substrate facing the first substrate and corresponding to the non-sensing area of the first substrate, wherein there is a first sub-spacer gap between the first substrate and each first sub-spacer of the second substrate;
and
a plurality of second sub-spacers, disposed at the surface of the second substrate facing the first substrate and corresponding to the non-sensing area of the first substrate, wherein there is a second sub-spacer gap between the first substrate and each second sub-spacer of the second substrate, and the first sub-spacer gap is less than the sensing gap and the sensing gap is less than the second sub-spacer gap;
and
a liquid crystal layer, disposed between the first substrate and the second substrate.

6 more elements

A touch display panel, comprising:

a first substrate, comprising a plurality of sensing areas and a non-sensing area outside the sensing areas, wherein the first substrate comprises a plurality of first electrodes respectively within each of the sensing areas;
a second substrate, disposed oppositely to the first substrate;
a plurality of main supporting structures, disposed within the non-sensing area and connected to the first substrate and the second substrate;
a plurality of sensing structures, disposed between the first substrate and the second substrate within the corresponding sensing areas, wherein each of the sensing structures comprises a first electrode disposed at a surface of the first substrate and a second electrode disposed at a surface of the second substrate, and there is a sensing gap between the first electrode and the second electrode;
a plurality of first sub-supporting structures, disposed between the first substrate and the second substrate within the non-sensing area and respectively having a first sub-spacer gap;
a plurality of second sub-supporting structure, disposed between the first substrate and the second substrate within the non-sensing area and respectively having a second sub-spacer gap, wherein the first sub-spacer gap is less than the sensing gap and the sensing gap is less than the second sub-spacer gap;
and
a liquid crystal layer, disposed between the first substrate and the second substrate.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/345,677Filed 30 Dec 2008
Priority: TW 97142206 A31 Oct 2008
Published: US 2010/0110022 A16 May 2010
Granted: 13 Mar 2012
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

G06F 3/047
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: using sets of wires, e.g. crossed wires
G06F 3/0412
Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means: digitisers structurally integrated in a display
G02F 1/13394
Gaskets; Spacers; Sealing of cells: spacers regularly patterned on the cell subtrate, e.g. walls, pillars
G06F
Computing and data processing