TWM469547U - Sensing substrate and touch panel using the same - Google Patents

Abstract

A sensing substrate and a touch panel using the same are provided. The sensing substrate comprises a transparent film, a light-shielding layer, a transparent conductive layer, a conductive trace and a transparent connection layer. The transparent film has an edge area and a touching area. The light-shielding layer and the conductive trace are formed on the edge area. The transparent conductive layer is formed on the touching area. The transparent connection layer is extended to the transparent conductive layer form the conductive trace, so as to electrically connect the conductive trace and the transparent conductive layer.

Description

Inductive substrate and touch panel using the same

The present invention relates to an inductive substrate and a touch panel using the same, and more particularly to an inductive substrate having a light-transmissive conductive layer and a touch panel using the same.

The conventional resistive touch panel includes a first sensing substrate, a second sensing substrate, and a cover. The first sensing substrate is disposed opposite to the second sensing substrate, and the cover plate covers one of the first substrate and the second substrate. To shield the trace layer on the substrate. However, the cover has a certain thickness and strength, thus reducing the sensitivity of the touch.

The present invention relates to a sensing substrate and a touch panel using the same, and the cover can be omitted to improve the touch sensitivity.

According to an embodiment of the present invention, an inductive substrate is proposed. The sensing substrate comprises a light transmissive film, a light shielding insulating layer, a light transmitting conductive layer, a conductive wire and a light transmitting connecting layer. The light transmissive film has an edge region and a touch region. A light-shielding insulating layer is formed in the edge region. The light-transmissive conductive layer is formed in the touch area. A conductive line is formed in the edge region. The light-transmitting connecting layer extends from the conductive line to the light-transmitting conductive layer to electrically connect the conductive line and penetrate Photoconductive layer.

According to another embodiment of the present invention, a touch panel is proposed. The touch panel includes one of the opposite sensing substrates and another sensing substrate. The sensing substrate comprises a light transmissive film, a light shielding insulating layer, a light transmitting conductive layer, a conductive wire and a light transmitting connecting layer. The light transmissive film has an edge region and a touch region. A light-shielding insulating layer is formed in the edge region. The light-transmissive conductive layer is formed in the touch area. A conductive line is formed in the edge region. The light-transmitting connecting layer extends from the conductive line to the light-transmitting conductive layer to electrically connect the conductive line and the light-transmitting conductive layer.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

10‧‧‧Touch panel

100,200‧‧‧Induction substrate

110‧‧‧Transparent film

110a‧‧‧Edge area

110b‧‧‧ touch area

110s‧‧‧ touch surface

110u‧‧‧ surface

120‧‧‧ shading layer

120a‧‧‧ hollow pattern

130‧‧‧Light conductive layer

140‧‧‧Flexible wire

150‧‧‧Light connection layer

D1‧‧ Direction

FIG. 1A is a top plan view of an inductive substrate according to an embodiment of the present invention.

Fig. 1B is a cross-sectional view taken along line 1B-1B' in Fig. 1A.

FIG. 2 is a cross-sectional view of a touch panel according to an embodiment of the present invention.

Please refer to FIG. 1A, which illustrates a top view of an inductive substrate according to an embodiment of the present invention. The sensing substrate 100 can be applied to a resistive touch panel, such as a four-wire, five-wire, six-wire, seven-wire, eight-wire touch panel or other various resistive touch panels. The sensing substrate 100 includes a light transmissive film 110, a light shielding layer 120 (FIG. 1B), a light-transmitting conductive layer 130, two conductive wires 140, and a light-transmitting connecting layer 150.

The light transmissive film 110 is, for example, a polycarbonate (Polycarbonate, PC), a polyethylene terephthalate (PET), a polymethylmethacrylate (PMMA) or a cyclic olefin copolymer (Cyclic). Olefin Copolymer) and other materials. The light transmissive film 110 has an edge region 110a and a touch region 110b, wherein the edge region 110a surrounds the touch region 110b.

Referring to Fig. 1B, a cross-sectional view taken along line 1B-1B' in Fig. 1A is shown. The light-shielding insulating layer 120 is, for example, a black matrix (BM) formed on the edge region 110a to shield the conductive line 140 from the appearance of the conductive line 140. Since the sensing substrate 100 of the present embodiment includes the light shielding layer 120, the conventional cover can be omitted. In practical applications, the finger can be directly touched on the touch surface 110s of the transparent film 110. Since the conventional cover thickness is omitted, the sensitivity of the induction can be improved and the cost of the cover can be saved. The light-shielding insulating layer 120 has a hollow pattern 120a, which is, for example, a logo pattern, a brand pattern, or a product model pattern. A color layer may be filled in the hollow pattern 120a to make the above pattern a color pattern.

The light-transmitting conductive layer 130 is formed on the touch area 110b. In the present embodiment, the light-transmitting conductive layer 130 and the light-shielding layer 120 are formed on the same surface 110u of the light-transmissive film 110. The light-transmitting conductive layer 130 is made of, for example, a Transparent Conductive Oxide (TCO) or a transparent organic conductive material, wherein the transparent conductive material such as Indium Tin Oxide (ITO) or Indium Zinc Oxide (indium zinc oxide, IZO), and the transparent organic conductive material is, for example, polyethylene dioxythiophene (PEDOT).

Two conductive lines 140 are oppositely formed in the edge region 110a (eg, 1A) The figure shows a touch signal that senses the direction D1 of the vertical two conductive lines 140. The conductive wire 140 may be a metal wire, such as a silver electrode, which is excellent in electrical conductivity, and can quickly transmit the touch signal in the direction D1 to a flexible circuit board (not shown).

The light-transmitting connecting layer 150 extends from the conductive line 140 to the light-transmitting conductive layer 130, that is, one portion of the light-transmitting connecting layer 150 is located at the edge region 110a, and another portion of the light-transmitting connecting layer 150 is located at the touch region 110b. The transparent connecting layer 150 is electrically connected to the conductive line 140 and the transparent conductive layer 130, so that the touch signal generated from the touch area 110b can be transmitted to the flexible circuit board through the transparent conductive layer 130 and the conductive line 140. Further, the light-transmitting connecting layer 150 may be made of a material such as a light-transmitting conductive layer, and therefore, even if the light-transmitting connecting layer 150 is extended to the touch-sensitive area 110b, it is not excessively exposed from the appearance.

Please refer to FIG. 2 , which is a cross-sectional view of a touch panel according to an embodiment of the present invention. The touch panel 10 includes the sensing substrate and another sensing substrate 200 , wherein the sensing substrate 100 is disposed opposite to the sensing substrate 200 . The sensing substrate 200 can sense the signal of the touch point in the other direction, and the other direction is perpendicular to the direction D1. The light transmissive film 110 of the sensing substrate 200 faces upward, and the finger can directly touch the light transmissive film 110 of the sensing substrate. Since the conventional cover thickness is omitted, the sensitivity of the touch panel 10 is improved.

In summary, although the present invention has been disclosed above in the preferred embodiments, it is not intended to limit the present invention. Those of ordinary skill in the art to which the present invention pertains can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of this new type is defined by the scope of the appended patent application. Prevail.

100‧‧‧Induction substrate

110‧‧‧Transparent film

110a‧‧‧Edge area

110b‧‧‧ touch area

120a‧‧‧ hollow pattern

130‧‧‧Light conductive layer

140‧‧‧Flexible wire

150‧‧‧Light connection layer

D1‧‧ Direction

Claims (12)

An inductive substrate comprises: a light transmissive film having an edge region and a touch region; a light shielding insulating layer formed on the edge region; a light transmissive conductive layer formed on the touch region; a conductive line formed And a transparent connecting layer extending from the conductive line to the transparent conductive layer to electrically connect the conductive line and the transparent conductive layer. The sensor substrate of claim 1, wherein the light transmissive film is made of polycarbonate (Polycarbonate, PC), polyethylene terephthalate (PET), polymethyl methacrylate. (Polymethylmethacrylate, PMMA) or a cyclic olefin copolymer (Cyclic Olefin Copolymer). The sensing substrate of claim 1, comprising: two conductive lines formed oppositely in the edge region to sense a touch perpendicular to the direction of the two conductive lines. The sensing substrate of claim 1, wherein the conductive wire is a metal wire. The sensing substrate of claim 4, wherein the conductive wire is made of silver metal. The sensing substrate of claim 1, wherein one of the transparent connecting layers is partially located in the edge region, and another portion of the transparent connecting layer is located in the touch Control area. A touch panel comprising: the sensing substrate according to claim 1; and another sensing substrate disposed opposite to the sensing substrate. The touch panel of claim 7, wherein the light transmissive film is made of polycarbonate, polyethylene terephthalate, polymethyl methacrylate or a cyclic olefin copolymer. The touch panel of claim 7, wherein the sensing substrate comprises: two conductive lines formed oppositely to the edge region to sense a touch perpendicular to the direction of the two conductive lines. The touch panel of claim 7, wherein the conductive wire is a metal wire. The touch panel of claim 10, wherein the conductive wire is made of silver metal. The touch panel of claim 7, wherein one of the transparent connecting layers is partially located in the edge region, and another portion of the transparent connecting layer is located in the touch region.