TWM458610U - Touch panel structure and display device using the touch panel - Google Patents

Description

Touch panel structure and display device using the same

The present invention relates to a display, and more particularly to a display device having a touch panel.

Along with the development of high-performance and diversified electronic devices such as mobile phones and navigation systems, electronic devices that mount a translucent touch panel in front of display devices are increasing. According to the working principle of the touch screen and the transmission medium, the touch screens in the prior art can be divided into four types: resistive, capacitive, infrared, and surface acoustic wave, etc., wherein the capacitive touch screen is The accuracy is high and the anti-interference ability is strong, so the application is more extensive.

Currently, in the structure of the touch screen, the transparent conductive layer is an essential component for the touch screen. Generally, a transparent conductive layer is usually made of an indium tin oxide (ITO) layer. However, the indium tin oxide layer as a transparent conductive layer has disadvantages such as insufficient mechanical and chemical durability. In addition, the indium tin oxide layer has a phenomenon in which the resistance value distribution is uneven, resulting in a problem that the resolution of the capacitive touch screen is low and the accuracy is not high.

In order to improve the above problems, some companies use carbon nanotubes as transparent conductive layers. . However, since the transparent conductive layer of the carbon nanotube still needs to be electrically connected with the control circuit by using the conductive line to achieve the purpose of transmitting the change of the capacitance signal, the use of the carbon nanotube may additionally cause process and structural problems. Specifically, when the transparent conductive layer of the carbon nanotube is fabricated, as shown in the first figure, a transparent conductive layer 20a is formed on the substrate 10a, and the transparent conductive layer 20a further distinguishes a touch region 30a with In a non-touch area 40a, the transparent conductive layer of the non-touch area 40a may be completely removed by laser or etching, or an insulating layer (not shown) may be disposed on the non-touch area 40a, and then The printing technology electrically connects the conductive circuit layer 50a and the electrode conductive layer 301a of the touch region 30a. This processing results in a large amount of labor and complicated processes, resulting in an increase in manufacturing cost.

Therefore, the main purpose of the present invention is to solve the traditional lack of a touch panel structure, which improves the non-touch area structure of the touch panel, so that the conductive circuit layer can be directly disposed on the non-touch area, on the conductive circuit layer. The conductive lines between the conductive lines can be prevented from being poorly conducted by the blocking blocks (conductive layers) in the non-touch area, which is more conducive to the wiring design of the conductive line layer and the improvement of the process yield, and can reduce the manufacturing cost.

In order to achieve the above purpose, the present invention provides a touch panel comprising: a substrate; a transparent conductive layer disposed on a surface of the substrate, the transparent conductive layer having a touch area and a non-touch area, The touch zone has an electrode conductive layer, the non-touch zone has a plurality of barrier blocks, and the barrier blocks have a plurality of barrier grooves a conductive circuit layer disposed on the barrier trench of the non-touch area.

Wherein, the substrate is made of transparent plastic sheet or transparent glass.

The electrode conductive layer has a plurality of strip-shaped or block-shaped positive electrode conductive blocks and a negative electrode conductive block.

Wherein, the transparent conductive layer is indium tin oxide or a carbon nanotube.

Wherein, the blocking blocks are arranged in a matrix.

Wherein, the blocking blocks form a plurality of vertical and horizontal blocking trenches.

Wherein, the conductive circuit layer is composed of a plurality of conductive lines.

Wherein, the conductive line has a line width of 30 to 150 um.

Wherein, the conductive circuit layer is a metal conductive material such as silver glue.

Wherein, the line spacing between the conductive lines needs to be greater than the width of the vertical and horizontal blocking grooves.

In order to achieve the above, the present invention provides another display device, comprising: a touch panel comprising: a substrate; a transparent conductive layer disposed on a surface of the substrate, the transparent conductive layer having a touch region And a non-touch area, the touch area has an electrode conductive layer, the non-touch area has a plurality of blocking blocks, and the plurality of blocking grooves between the blocking blocks a conductive circuit layer disposed on the barrier trench of the non-touch area.

Wherein, the substrate is made of transparent plastic sheet or transparent glass.

The electrode conductive layer has a plurality of strip-shaped or block-shaped positive electrode conductive blocks and a negative electrode conductive block.

Wherein, the transparent conductive layer is indium tin oxide or a carbon nanotube.

Wherein, the blocking blocks are arranged in a matrix.

Wherein, the blocking blocks form a plurality of vertical and horizontal blocking trenches.

Wherein, the conductive circuit layer is composed of a plurality of conductive lines.

Wherein, the conductive line has a line width of 30 to 150 um.

Wherein, the conductive circuit layer is a metal conductive material such as silver glue.

Wherein, the line spacing between the conductive lines needs to be greater than the width of the vertical and horizontal blocking grooves.

100~106‧‧‧Steps

10‧‧‧Touch panel

1‧‧‧Substrate

2‧‧‧Transparent conductive layer

21‧‧‧ Touch zone

22‧‧‧Non-touch zone

23‧‧‧Electrode conductive layer

231‧‧‧positive conductive block

232‧‧‧Negative conductive block

24‧‧‧ Block

241‧‧‧ Barrier trench

3‧‧‧Transmission line layer

31‧‧‧Transmission line

20‧‧‧ display device

201‧‧‧ display screen

201‧‧‧Transparent protective layer

The first picture is a schematic diagram of a conventional touch panel.

The second picture is a schematic diagram of the production process of the touch panel of the present creation.

The third figure is a side view of the semi-finished touch panel of the present invention.

The fourth figure is a front view of the touch panel of the third figure.

The fifth picture is the front view of the touch panel and the non-touch area of the touch panel of the present invention. schematic diagram.

The sixth figure is a schematic diagram of the non-touch area forming conductive circuit layer of the touch panel of the present invention.

The seventh figure is a schematic diagram of another embodiment of the present creation.

The technical content and detailed description of this creation are as follows: Please refer to the second to sixth figures, which is the schematic diagram of the production process of the touch panel and the steps formed by each step. As shown in the figure, in the production of the touch panel of the present invention, first, as in step 100, a substrate 1 is provided, and the substrate 1 is made of a transparent plastic sheet or a transparent glass material.

In step 102, a transparent conductive layer 2 is formed on one surface or two surfaces of the substrate 1, and a touch region 21 and a non-touch region 22 are distinguished on the transparent conductive layer 2. In the present embodiment, the transparent conductive layer 2 is Indium Tin Oxide (ITO) or an anisotropic carbon nanotube (CNT), so that the transparent conductive layer 2 can be made uniform. Resistance distribution; in addition, the use of a carbon nanotube as the transparent conductive layer 2 can make the transparent conductive layer 2 have better light transmission characteristics, thereby improving the resolution and accuracy of the touch panel and the display device using the touch panel. degree.

Step 104: Perform processing on the touch area 21 and the non-touch area 22, and form an electrode conductive layer 23 on the touch area 21 by using a lithography or a laser processing, and the electrode conductive layer 23 is formed by a plurality of strips or blocks of positive electrodes Block 231 and negative electrode conductive block 232 are formed. The non-touch area 22 is formed with a plurality of blocking blocks 24 arranged in a matrix, and a plurality of vertical and horizontal blocking grooves 241 are formed between the blocking blocks 24.

Step 106, after direct screen printing or sputtering, evaporation, lithography yellow etching on the non-touch area 22 to form a conductive circuit layer 3, the conductive circuit layer 3 is composed of a plurality of conductive lines 31, each of which A conductive line 31 is located on the barrier trench 241. In the present diagram, the conductive wiring layer 3 is a metal conductive material such as silver paste.

After the conductive layer 3 of the above step 106 is completed, a touch panel 10 is formed. The line width of the conductive line 31 of the touch panel 10 is 30-150 um, and the line spacing between the two conductive lines 31. A width greater than the vertical and horizontal barrier trenches 241 is required to cause a short circuit between the two conductive lines 31 even if the conductive line 31 is printed on the barrier block 24.

Since the touch panel 10 of the present invention is provided with the barrier trench 241 on the non-touch area 22, the conductive lines 31 adjacent to the non-touch area 22 are not in contact, and the insulating barrier effect is provided to avoid the conventional electrode line. Disadvantages such as poor conduction or short circuit caused by direct molding on the non-touch area 22.

Furthermore, the touch panel 10 of the present invention directly places the conductive line 31 on the blocking trench 241 formed by the blocking block 24 of the non-touch area 22, so that the wiring space design of the conductive circuit layer 3 is increased, and the fabrication is reduced. cost.

Please refer to the sixth figure, which is a schematic diagram of the touch panel of this creation. As shown in the figure, the touch panel 10 of the present invention comprises: a substrate 1, a transparent conductive layer 2 and a conductive circuit layer 3.

The substrate 1 is made of a transparent plastic sheet or a transparent glass.

The transparent conductive layer 2 is disposed on one surface or two surfaces of the substrate 1. The transparent conductive layer 2 has a touch area 21 and a non-touch area 22. The touch region 21 has an electrode conductive layer 23 composed of a plurality of strip-shaped or block-shaped positive electrode conductive blocks 231 and negative electrode conductive blocks 232. In addition, the non-touch area 22 is formed with a plurality of blocking blocks 24 arranged in a matrix, and a plurality of vertical and horizontal blocking grooves 241 are formed between the blocking blocks 24. In the figure, the transparent conductive layer 2 is Indium Tin Oxide (ITO) or carbon nanotubes (CNTs) having the same orientation, so that the transparent conductive layer 2 can be made uniform. Resistance distribution; in addition, the use of a carbon nanotube as the transparent conductive layer 2 can make the transparent conductive layer 2 have better light transmission characteristics, thereby improving the resolution and accuracy of the touch panel and the display device using the touch panel. degree.

The conductive circuit layer 3 is disposed on the barrier trench 241 of the non-touch region 22, and the conductive trace layer 3 is composed of a plurality of conductive lines 31, and each of the conductive lines 31 is located on the barrier trench 241. The line width of the conductive line 31 is 30 to 150 um, and the line spacing between the two conductive lines 31 is greater than the width of the vertical and horizontal blocking grooves 241. In the present diagram, the conductive wiring layer 3 is a metal conductive material such as silver paste.

The creation of the non-touch area 22 of the touch panel 10 is provided with a barrier trench 241 having a line width of 30 to 150 um and a line spacing between the two conductive lines 31 greater than vertical and horizontal. The width of the barrier trench 241 is such that the adjacent conductive lines 31 on the non-touch area 22 are not in contact, and have an insulating barrier effect to avoid conduction caused by the direct formation of the conventional electrode line on the non-touch area 22. Shortcomings such as good or short circuit. Moreover, the conductive lines 31 are directly disposed on the barrier trenches 241 formed by the barrier blocks 24 of the non-touch regions 22, so that the wiring space design of the conductive wiring layer 3 is increased, and the manufacturing cost is reduced.

Please refer to the seventh figure, which is a schematic diagram of another embodiment of the present creation. As shown in the figure, the touch panel 10 of the present invention is installed between the display screen 201 of the display device 20 and the transparent protective layer 201, so that the user can see the display screen 201 from the touch panel 10. The displayed image may be operated according to an image (not shown) displayed on the display screen 201. When the user slides on the surface of the touch panel 10, the sliding path will be touched. The electrode conductive layer 23 of the region 21 senses, and the induced signal is transmitted from the conductive circuit layer 3 to an external control circuit (not shown) to perform various functional operations of the display device 20.

Further, the positive electrode conductive 231 and the negative electrode conductive blocks 232 of the touch region 21 may be respectively disposed on different surfaces of the substrate 1. For example, the positive conductive wires 231 are disposed on the front surface of the substrate 1, and the negative electrodes are electrically conductive. The block 232 is disposed on the back surface of the substrate 1, or the positive electrode conductive 231 of the touch region 21 and the negative electrode conductive blocks 232 are respectively disposed on the substrate 1 of different blocks.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention. That is, the equal changes and modifications made by the patent application scope of this creation are covered by the scope of the creation patent.

10‧‧‧Touch panel

1‧‧‧Substrate

2‧‧‧Transparent conductive layer

21‧‧‧ Touch zone

22‧‧‧Non-touch zone

23‧‧‧Electrode conductive layer

231‧‧‧positive conductive block

232‧‧‧Negative conductive block

24‧‧‧ Block

241‧‧‧ Barrier trench

3‧‧‧Transmission line layer

31‧‧‧Transmission line

Claims (20)

A touch panel includes: a substrate; a transparent conductive layer disposed on a surface of the substrate, the transparent conductive layer having a touch area and a non-touch area, the touch area having an electrode conductive layer The non-touch area has a plurality of barrier blocks, and the barrier blocks have a plurality of barrier trenches therebetween; and a conductive circuit layer is disposed on the barrier trenches of the non-touch regions. The touch panel of claim 1, wherein the substrate is a transparent plastic sheet or a transparent glass material. The touch panel of claim 2, wherein the electrode conductive layer comprises a plurality of strip-shaped or block-shaped positive electrode conductive blocks and a negative electrode conductive block. The touch panel of claim 3, wherein the transparent conductive layer is indium tin oxide or a carbon nanotube. The touch panel of claim 4, wherein the barrier blocks are arranged in a matrix. The touch panel of claim 5, wherein the barrier blocks form a plurality of vertical and horizontal barrier grooves. The touch panel of claim 6, wherein the conductive circuit layer is composed of a plurality of conductive lines. The touch panel of claim 7, wherein the conductive line has a line width of 30 to 150 um. The touch panel of claim 8, wherein the conductive circuit layer is a metal conductive material such as silver paste. The touch panel of claim 9, wherein the line spacing between the conductive lines is greater than the width of the vertical and horizontal blocking grooves. A display device comprising: a touch panel comprising: a substrate; a transparent conductive layer disposed on a surface of the substrate, the transparent conductive layer having a touch area and a non-touch area, the touch The region has an electrode conductive layer, the non-touch region has a plurality of barrier blocks, and the barrier blocks have a plurality of barrier trenches therebetween; and a conductive circuit layer is disposed on the barrier trench of the non-touch region. The display device according to claim 11, wherein the substrate is made of a transparent plastic sheet or a transparent glass material. The display device according to claim 12, wherein the electrode conductive layer comprises a plurality of strip-shaped or block-shaped positive electrode conductive blocks and a negative electrode conductive block. The display device of claim 13, wherein the transparent conductive layer is an indium tin oxide or a carbon nanotube. The display device of claim 14, wherein the barrier blocks are arranged in a matrix. The display device of claim 15, wherein the barrier blocks form a plurality of vertical and horizontal barrier grooves. The display device of claim 16, wherein the conductive circuit layer is composed of a plurality of conductive lines. The display device of claim 17, wherein the conductive line has a line width of 30 to 150 um. The display device of claim 18, wherein the conductive circuit layer is a metal conductive material such as silver paste. The display device of claim 19, wherein the line spacing between the conductive lines is greater than the width of the vertical and horizontal blocking grooves.