Touch panel using touch pen and formed with power pattern

• US 10,061,446 B2
• Filed: 06/17/2015
• Issued: 08/28/2018
• Est. Priority Date: 06/19/2014
• Status: Active Grant

• Current Assignee: LG Innotek Company Limited (LG Corporation)
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: Jin, Kwang Yong, Oem, Seongsu, You, Young Sun, Lee, Sun Hwa
• Primary Examiner(s): Marinelli, Patrick F
• Application Number:
  US14/741,726
• Publication Number:
  US 20150370347A1
• Time in Patent Office: 1,168 Days
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• 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 2203/04107 Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0441 using active external devices, e.g. active pens, for receiving changes in electrical potential transmitted by the digitiser, e.g. tablet driving signals
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes

Abstract

A touch panel is provided with a power pattern. The touch panel may include a first substrate, a first pad and a second pad. The power pattern may be formed as the first substrate to surround an edge of one side of the substrate at least one or more times and not to be overlapped all the way from one end to the other end. The first pad may be electrically connected to one end of the power pattern. The second pad may be electrically connected to the other end of the power pattern. The touch panel may also include a second substrate for arranging a terminal unit electrically connected to the first pad and the second pad.

Claims

1. A touch panel having a power pattern, the touch panel comprising:

a first substrate having the power pattern, a first pad and a second pad, provided thereon the power pattern provided at edges of a first side of the first substrate at least two or more times, and the power pattern to not overlap another portion of the power pattern from a first end of the power pattern to a second end of the power pattern, the first pad to be electrically connected to the first end of the power pattern, and the second pad to be electrically connected to the second end of the power pattern;

a second substrate having a first terminal unit provided thereon to electrically connect to the first pad, and the second substrate having a second terminal unit provided thereon to electrically connect to the second pad; and

a substrate overlapping area,

wherein the first substrate and the second substrate are overlapped,

wherein at least a portion of the power pattern is at the substrate overlapping area,

wherein the first side of the first substrate is bonded to a first side of the second substrate while the first side of the first substrate faces the first side of the second substrate,

wherein a wiring pattern is on the first substrate, and the power pattern to surround the wiring pattern at least two or more times as one line without having an overlapped portion by connecting a first end of the power pattern to the first pad and a second end of the power pattern to the second pad,

wherein the portion of the power pattern formed at the substrate overlapping area is a portion formed by surrounding the wiring pattern at least two or more times at the edge of the first side of the first substrate, in addition to the portion of the power pattern where the first pad and the second pad are connected to the first end and the second end of the power pattern,

wherein a plurality of third pads are provided on the first substrate, between the first ad and the second pad, and each of the third pads is electrically connected to one side of the wiring pattern,

wherein the first pad, the second pad and the plurality of third pads are aligned in a straight line on the first substrate,

wherein a plurality of third terminal units are provided on the second substrate to electrically connect to the plurality of third pads on the first substrate, and

wherein the first terminal unit, the second terminal unit and the plurality of third terminal units are aligned in a straight line on the second substrate.

2. The touch panel according to claim 1, wherein the second substrate is a flexible printed circuit board (FPCB) substrate.

3. The touch panel according to claim 2, wherein the first side of the first substrate is bonded to the first side of the second substrate by Anisotropic Conductive Film (ACF) bonding.

4. The touch panel according to claim 1, wherein the first and second terminal units on the second substrate are exposed on the first side of the second substrate.

5. The touch panel according to claim 4, wherein the first side of the first substrate is bonded to the first side of the second substrate by Anisotropic Conductive Film (ACF) bonding.

6. The touch panel according to claim 1, wherein a second side of the first substrate is bonded to a first side of a third substrate, on which a wiring pattern is formed, and the second side of the first substrate is facing the first side of the third substrate.

7. The touch panel according to claim 1, wherein a material of the power pattern is a metallic oxide, such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Zinc Oxide (ZnO), Copper Oxide, Tin Oxide, Zinc Oxide, Titanium Oxide or the like, a nano-wire, a photosensitive nano-wire film, a carbon nano-tube (CNT), conductive polymer, graphene, copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), or nickel (Ni).

8. A touch panel having a power pattern, the touch panel comprising:

a first substrate having the power pattern at edges of a first side of the first substrate, wherein the power pattern is provided at the edge at least two times, wherein a first pad and a second pad are at the first substrate;

a second substrate having terminal units to be electrically connected to the power pattern, wherein a first terminal unit is bonded to the first pad, and a second terminal unit is bonded to the second pad; and

a substrate overlapping area,

wherein the first substrate and the second substrate are overlapped,

wherein at least a portion of the power pattern is at the substrate overlapping area,

wherein the first side of the first substrate is bonded to a first side of the second substrate while the first side of the first substrate faces the first side of the second substrate,

wherein a wiring pattern is on the first substrate, and the power pattern to surround the wiring pattern on the first substrate at least two or more times as one line without having an overlapped portion by connecting a first end of the power pattern to the first pad and a second end of the power pattern to the second pad,

wherein the portion of the power pattern formed at the substrate overlapping area is a portion formed by surrounding the wiring pattern at least two or more times at the edge of the first side of the first substrate, in addition to the portion where the first pad and the second pad are connected to the first end and the second end of the power pattern,

wherein a plurality of third pads are provided on the first substrate, between the first pad and the second pad, and each of the third pads is electrically connected to one side of the wiring pattern,

wherein the first pad, the second pad and the plurality of third pads are aligned in a straight line on the first substrate,

wherein a plurality of third terminal units are provided on the second substrate to electrically connect to the plurality of third pads on the first substrate, and

wherein the first terminal unit, the second terminal unit and the plurality of third terminal units are aligned in a straight line on the second substrate.

9. The touch panel according to claim 8, wherein the second substrate is a flexible printed circuit board (FPCB) substrate.

10. The touch panel according to claim 9, wherein the first pad and the second pad are at the first substrate, the first pad is electrically connected to a first end of the power pattern and the second pad is electrically connected to a second end of the power pattern, and the first and second terminal units are exposed on the first side of the second substrate, and the first terminal unit is bonded to at least the first pad, and the second terminal unit is bonded to at least the second pad.

11. The touch panel according to claim 8, wherein a material of the power pattern is metallic oxide, such as Indium Tin Oxide (ITO), Indium Zinc Oxide (IZO), Zinc Oxide (ZnO), Copper Oxide, Tin Oxide, Zinc Oxide, Titanium Oxide or the like, a nano-wire, a photosensitive nano-wire film, a carbon nano-tube (CNT), conductive polymer, graphene, copper (Cu), gold (Au), silver (Ag), aluminum (Al), titanium (Ti), or nickel (Ni).