COVER LENS WITH TOUCH SENSING FUNCTION

• US 20100006347A1
• Filed: 07/08/2008
• Published: 01/14/2010
• Est. Priority Date: 07/08/2008
• Status: Abandoned Application

• Current Assignee: Young Fast Optoelectronics Company Limited
• Original Assignee: Young Fast Optoelectronics Company Limited
• Inventors: Yang, Kai-Ti
• Application Number:
  US12/168,913
• Publication Number:
  US 20100006347A1
• Time in Patent Office: Days
• US Class Current: 178/18.10
• CPC Class Codes: G02F 1/133526 Lenses, e.g. microlenses or Fresnel lenses
• CPC Class Codes: G02F 2201/503 Arrangements improving the resistance to shock
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• 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

Abstract

A cover lens with touch sensing function is a transparent plate formed by a substrate, a surface layer, a sensing layer, and an insulated layer. The substrate of the cover lens is a highly transparent plate with outstanding mechanical strength. The surface layer consists of one or a plurality of functional films and is arranged on an upper surface of the substrate. The sensing layer is arranged on a bottom surface of the substrate and further has a plurality of X axis traces and Y axis traces. The X and Y axis traces are formed on the same plane and intersect to each other as a matrix. Induction-spots are formed on each X axis trace and are connected one by one. Induction-spots are formed on each Y axis trace but are formed separately with gaps. Pairs of through holes is formed respectively to all the adjacent induction-spots of each Y axis trace on the insulated layer. A conductive wire crossing between the pair of the through holes is arranged on the surface of the insulated layer. Both ends of the conductive wire exposed to the through holes respectively are formed as electrical joints. The insulated layer is covered on the sensing layer from a bottom surface so as to cover and insulate the X and Y axis traces.

Claims

1. A cover lens with touch sensing function comprising:

a substrate being a highly transparent thin plate with an outstanding mechanical strength;

a surface layer being formed on an upper surface of the substrate and being formed by at least one functional film;

a sensing layer being a transparent film with good conductivity;

the sensing layer being arranged on a bottom surface of the substrate;

the sensing layer having a plurality of transparent X axis traces which are arranged in parallel with fixed interval between, and also having a plurality of transparent Y axis traces which are arranged in parallel with fixed interval therebetween;

the X and Y traces being formed on a same plane and intersecting each other as a matrix;

induction-spots formed on each X axis trace being connected one by one and induction-spots formed on each Y axis trace being formed separately with gaps;

an front end of each X axis trace and Y axis trace being formed as a trace joint; and

an insulated layer being a transparent insulated film;

at least one pair of through holes being formed respectively to all the adjacent induction-spots of each Y axis trace on the insulated layer;

a conductive wire being arranged on the bottom surface of the insulated layer and crossing between the pair of through holes;

both ends of the conductive wire exposed to the through holes respectively being formed as electrical joints;

the insulated layer being covered on the sensing layer from a bottom surface so as to cover and insulate the X axis traces and Y axis traces;

on the insulated layer, the electrical joints on both ends of the conductive wire passing through the corresponding through holes and connecting to the adjacent induction-spots of each Y axis trace so that all the induction-spots of each Y axis trace are connected;

an end of each X axis and Y axis trace being respectively connected to sliver conducting wires formed at edges and then conducting to a signal output wire bank;

through above connections, a sensing signal generated by the X axis traces and Y axis traces on the sensing layer being transmitted to a succeeding signal processing circuit through the signal output wire bank.

2. The cover lens with touch sensing function as claimed in claim 1, wherein the substrate is a thin plate made of glass, polymethylmethacrylate, Polycarbonate, Polythylene terephthalate, and Cyclic Olefin Copolymer.

3. The cover lens with touch sensing function as claimed in claim 1, wherein the functional film is one of a polarization film, a filter film, a scratch-proof film, and a hard coat layer.

4. The cover lens with touch sensing function as claimed in claim 1, wherein the insulated layer is an insulated and highly transparent thin layer with permittivity approximately between 2 to 4.

5. The cover lens with touch sensing function as claimed in claim 4, wherein the insulated and highly transparent thin layer is made of a material selected from ink and Polythylene terephthalate.

6. The cover lens with touch sensing function as claimed in claim 1, wherein the conductive wire is made of transparent organic conductive material.

7. The cover lens with touch sensing function as claimed in claim 1, wherein the conductive wire is a transparent conductive thin film made of Indium Tin Oxide.