Conductive substrate and touch screen having same

Patent metadata

Field	Value
Publication number	US-9313883-B2
Application number	US-201214008201-A
Country	US
Kind code	B2
Filing date	Mar 28, 2012
Priority date	Mar 28, 2011
Publication date	Apr 12, 2016
Grant date	Apr 12, 2016

Abstract

The present invention relates to a conducting substrate and a touch screen comprising the same, and the conducting substrate according to the present invention comprises a board, and an electric conducting pattern provided on at least one surface of the board, wherein the electric conducting pattern comprises a border structure of closed figures continuously connected and does not comprise the closed figures having the same shape in a predetermined unit area (1 cm×1 cm), and the number of vertexes of the closed figures is different from the number of vertexes of quadrangles having the same number as the closed figures.

First claim

The invention claimed is:

1. A conducting substrate, comprising:
a board; and
an electric conducting pattern provided on at least one surface of the board,
wherein the electric conducting pattern comprises a border structure of continuously connected closed figures,
wherein a number of vertexes of the closed figures is 1.9 to 2.1 times larger than a number of vertexes of quadrangles, where the number of the quardrangles are the same as the number of the closed figures,
wherein when an image of a transmission type diffraction pattern is obtained by radiating straight light emitted from a light source to the electric conducting pattern on the conducting substrate, the image has a value of the following Equation 2 of less than 21,
(standard deviation of intensities of the transmission type diffraction patterns according to an angle region / an average of intensity of the transmission type diffraction pattern according to the angle region)×100  [Equation 2]

wherein the angle region is a region where 0 to 360° are divided every 10° from a center of the image of the transmission type diffraction pattern.

2. The conducting substrate according to claim 1 , wherein the closed figures have the value of the following Equation 1 of 50 or more:
(standard deviation of the distances between the vertexes / average of the distances between the vertexes)×100.   [Equation 1]

3. The conducting substrate according to claim 1 , wherein when angles of lines constituting a border of the closed figures to a predetermined straight line are divided from 0 to 180° in a unit of 10° , a value of the following Equation 3 is less than 21 with respect to the number of lines belonging to each angle range:
(standard deviation of numbers of lines corresponding to the angle range / average of the numbers of the lines corresponding to the angle range)×100.   [Equation 3]

4. The conducting substrate according to claim 1 , wherein the electric conducting pattern has a shape of the border structure of the closed figures obtained by after disposing predetermined points in regularly arranged unit cells, connecting the points to the closest points thereto as compared to the distances from other points.

5. The conducting substrate according to claim 4 , wherein randomness to disposal of the points in the regularly arranged unit cells is 70% or more.

6. The conducting substrate according to claim 1 , wherein the electric conducting pattern is a single film or a multilayered film comprising gold, silver, aluminum, copper, neodymium, molybdenum, nickel, or an alloy thereof.

7. The conducting substrate according to claim 1 , wherein a line width of the electric conducting pattern is 10 μm or less, and the electric conducting pattern has the number of the vertexes of the closed figures of 6,000 to 245,000 in an area of 3.5 cm×3.5 cm.

8. The conducting substrate according to claim 1 , wherein a line width of the electric conducting pattern is 7 μm or less, and the electric conducting pattern has the number of the vertexes of the closed figures of 7,000 to 62,000 in an area of 3.5 cm×3.5 cm.

9. The conducting substrate according to claim 1 , wherein a line width of the electric conducting pattern is 5 μm or less, and the electric conducting pattern has the number of the vertexes of the closed figures of 15,000 to 62,000 in an area of 3.5 cm×3.5 cm.

10. The conducting substrate according to claim 1 , wherein a line width of the electric conducting pattern is 10 μm or less and a thickness thereof is 10 μm or less.

11. The conducting substrate according to claim 1 , wherein a line width of the electric conducting pattern is 7 μm or less and a thickness thereof is 1 μm or less.

12. The conducting substrate according to claim 1 , wherein a line width of the electric conducting pattern is 5 μm or less and a thickness thereof is 0.5 μm or less.

13. The conducting substrate according to claim 1 , wherein an opening ratio of the electric conducting pattern is 70% or more.

14. The conducting substrate according to claim 1 , further comprising:
a darkening layer provided on at least one surface of the electric conducting pattern and in a region corresponding to the electric conducting pattern.

15. The conducting substrate according to claim 14 , wherein total reflectance of a pattern region formed of the darkening layer and the electric conducting pattern, which is measured from a surface from which the darkening layer of the conducting substrate is visible, is 17% or less based on external light of 550 nm.

16. A touch screen, comprising:
an additional transparent board on the electric conducting pattern of the conducting substrate according to claim 1 .

17. The touch screen according to claim 16 , wherein the additional transparent board is reinforced glass or transparent plastic.

18. A display, comprising:
the touch screen of claim 16 ; and
a display module.

19. A conducting substrate, comprising:
a board; and
an electric conducting pattern provided on at least one surface of the board,
wherein the electric conducting pattern comprises a border structure of continuously connected closed figures,
wherein a number of vertexes of the closed figures is 1.9 to 2.1 times larger than a number of vertexes of polygons formed by connecting shortest distances between centers of the closed figures,
wherein when an image of a transmission type diffraction pattern is obtained by radiating straight light emitted from a light source to the electric conducting pattern on the conducting substrate, the image has a value of the following Equation 2 of less than 21,
(standard deviation of intensities of the transmission type diffraction patterns according to an angle region / an average of intensity of the transmission type diffraction pattern according to the angle region)×100  [Equation 2]

wherein the angle region is a region where 0 to 360° are divided every 10° from a center of the image of the transmission type diffraction pattern.

20. A conducting substrate, comprising:
a board; and
an electric conducting pattern provided on at least one surface of the board,
wherein the electric conducting pattern comprises a border structure of continuously connected closed figures, and the closed figures have a value of the following Equation 1 of 50 or more:
(standard deviation of distances between vertexes / average of the distances between the vertexes)×100,   [Equation 1]

wherein when an image of a transmission type diffraction pattern is obtained by radiating straight light emitted from a light source to the electric conducting pattern on the conducting substrate, the image has a value of the following Equation 2 of less than 21,
(standard deviation of intensities of the transmission type diffraction patterns according to an angle region / an average of intensity of the transmission type diffraction pattern according to the angle region)×100   [Equation 2]

wherein the angle region is a region where 0 to 360° are divided every 10° from a center of the image of the transmission type diffraction pattern.

Assignees

• Hwang Ji Young
• Hwang In-Seok
• Lee Seung Heon
• Chun Sang Ki
• Son Yong Goo
• Koo Beom Mo
• Seong Jiehyun
• Kim Joo Yeon
• Park Je Seob
• Lg Chemical Ltd

Inventors

• Hwang Ji Young
• Hwang In-Seok
• Lee Seung Heon
• Chun Sang Ki
• Son Yong Goo
• Koo Beom Mo
• Seong Jiehyun
• Kim Joo Yeon
• Park Je Seob

Classifications

• G06F3/044

  by capacitive means · CPC title

• G02F1/13338 Primary

  Input devices, e.g. touch panels · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G06F3/041

  Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means · CPC title

• G06F3/0421

  by interrupting or reflecting a light beam, e.g. optical touch-screen · CPC title