DUPLEX TOUCH PANEL

• US 20090140987A1
• Filed: 12/04/2007
• Published: 06/04/2009
• Est. Priority Date: 12/04/2007
• Status: Abandoned Application

• Current Assignee: Kai-Ti Yang
• Original Assignee: Kai-Ti Yang
• Inventors: Yang, Kai-Ti
• Application Number:
  US11/949,783
• Publication Number:
  US 20090140987A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04106 Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• 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 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G06F 3/045 using resistive elements, e.g. a single continuous surface or two parallel surfaces put in contact

Abstract

A duplex touch panel comprising: a capacitive touch panel unit; a resistive touch panel unit which is overlapped to the capacitive touch panel unit to be formed as a plate body; a signal processing unit received sensing signals from the capacitive touch panel unit and resistive touch panel unit; a surface layer; a first axis sensing layer being a transparent film; the first axis sensing layer having a plurality of first axis sensing traces; an insulation layer being a transparent insulated film layer; a second axis sensing layer being a transparent film; a base substrate being a flexible highly transparent insulated film; and a first signal output wire bank having a plurality of conductive paths; wherein the first axis sensing traces and second axis sensing traces being arranged along different vertical directions so as to form as a matrix.

Claims

1. A duplex touch panel comprising:

a capacitive touch panel unit;

a resistive touch panel unit which is overlapped to the capacitive touch panel unit to be formed as a plate body;

a signal processing unit received sensing signals from the capacitive touch panel unit and the resistive touch panel unit;

where the sensing signals are inputted form a touch operation on the touch panel;

the signal processing unit having at least one signal determination loop for determining that the sensing signals are from the capacitive touch panel unit or the resistive touch panel unit so as to determine a predetermined signal processing mode and thus performed a predetermined signal processing operation;

a surface layer being a flexible highly transparent insulated thin film;

a first axis sensing layer being a transparent film with good conductivity;

the first axis sensing layer having a plurality of first axis sensing traces which are parallel; and

ends of each trace having respective joints;

an insulation layer being a transparent insulated film layer;

a second axis sensing layer being a transparent film with good conductivity;

the second axis sensing layer having a plurality of second axis sensing traces which are parallel; and

ends of each trace having respective joints;

a base substrate being a flexible highly transparent insulated film; and

a first signal output wire bank having a plurality of conductive paths;

wherein the panel, the first axis sensing layer, the second axis sensing layer, the base substrate and the first signal output wire bank are glued together sequentially as a transparent plate like body;

the first axis sensing traces and second axis sensing traces are arranged along different vertical directions so as to form as a matrix;

the joints of the first axis sensing layer and second axis sensing layer are connected to silver conductive wires at edges of the base substrates and are connected to the first signal output wire bank so that signals from the first axis sensing layer and second axis sensing layer are transferred to a signal processing unit through the first signal output wire bank.

2. The duplex touch panel as claimed in claim 1, wherein the resistive touch panel unit is installed below the capacitive touch panel unit as a plate body.

3. The duplex touch panel as claimed in claim 1, wherein the capacitive touch panel unit is installed below the resistive touch panel unit as a plate body.

4. The duplex touch panel as claimed in claim 1, wherein the first axis sensing layer and the second sensing layer are made of indium tin oxide.

5. The duplex touch panel as claimed in claim 1, wherein the first axis line traces and the second axis line traces have widths between 0.05 and 5 mm.

6. The duplex touch panel as claimed in claim 1, wherein nodes at connections of the first axis line traces and the second line traces are formed with enlarged sensing areas.