Film for pen input device, and pen input device

Patent metadata

Field	Value
Publication number	US-9563291-B2
Application number	US-201414558188-A
Country	US
Kind code	B2
Filing date	Dec 2, 2014
Priority date	Dec 5, 2013
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

A film of a pen input device is provided, and a point determined by a combination of a static friction coefficient value x and a kinetic friction coefficient value y falls within a region including a line segment and the neighborhood of the line segment in a coordinate system showing the static friction coefficient on the X-axis and the kinetic friction coefficient on the Y-axis, the line segment being expressed as

y =0.3071 x +0.0496

0.26≧ x ≧0.13,

the following conditions being satisfied:

0.16≧the static friction coefficient value x ≧0.10

0.100≧the kinetic friction coefficient value y ≧0.080,

the size a, the height b, and the pitch c of concavities and convexities in the surface satisfying the following conditions:

20 μm ≧a ≧16 μm

0.9 μm ≧b ≧0.4 μm

30 μm ≧c ≧26 μm.

First claim

What is claimed is:

1. A film placed on an input surface of a pen input device,
wherein a point determined by a combination of a static friction coefficient value x and a kinetic friction coefficient value y obtained when an input pen is moved on a surface of the film with an applied load of 250 g at a speed of 5 cm/sec falls within a region including a line segment and a neighborhood of the line segment in a coordinate system showing a static friction coefficient on the X-axis and a kinetic friction coefficient on the Y-axis, the line segment being expressed as
y= 0.3071 x+ 0.0496
0.26≧ x≧ 0.13,

the static friction coefficient value x and the kinetic friction coefficient value y falling within ranges expressed as
0.16≧the static friction coefficient value x≧ 0.10

0.100≧the kinetic friction coefficient value y≧ 0.080,

size a, height b, and pitch c of concavities and convexities in the surface falling within ranges expressed as
20 μm≧ a≧ 16 μm

0.9 μm≧ b≧ 0.4 μm

30 μm≧ c≧ 26 μm.

2. The film according to claim 1 , wherein the concavities and convexities in the surface are formed by pressing a metal mold against a surface layer by an imprint technique, the metal mold having concavities and convexities.

3. The film according to claim 1 , which is made of polyethylene terephthalate (PET).

4. A film placed on an input surface of a pen input device,
wherein a point determined by a combination of a static friction coefficient value x and a kinetic friction coefficient value y obtained when an input pen is moved on a surface of the film with an applied load of 250 g at a speed of 5 cm/sec falls within a region including a line segment and a neighborhood of the line segment in a coordinate system showing a static friction coefficient on the X-axis and a kinetic friction coefficient on the Y-axis, the line segment being expressed as
y= 0.3071 x+ 0.0496
0.26≧ x≧ 0.13,

the static friction coefficient value x and the kinetic friction coefficient value y falling within ranges expressed as
0.29≧the static friction coefficient value x≧ 0.23

0.140≧the kinetic friction coefficient value y≧ 0.120,

size a, height b, and pitch c of concavities and convexities in the surface falling within ranges expressed as
30 μm≧ a≧ 26 μm

5.6 μm≧ b≧ 1.9 μm

18 μm≧ c≧ 14 μm.

5. The film according to claim 4 , wherein the concavities and convexities in the surface are formed by pressing a metal mold against a surface layer by an imprint technique, the metal mold having concavities and convexities.

6. The film according to claim 4 , which is made of polyethylene terephthalate (PET).

7. A pen input device comprising:
a film; and
a sensor surface having the film attached thereto,
wherein a point determined by a combination of a static friction coefficient value x and a kinetic friction coefficient value y obtained when an input pen is moved on a surface of the film with an applied load of 250 g at a speed of 5 cm/sec falls within a region including a line segment and a neighborhood of the line segment in a coordinate system showing a static friction coefficient on the X-axis and a kinetic friction coefficient on the Y-axis, the line segment being expressed as
y= 0.3071 x+ 0.0496
0.26 ≧x≧ 0.13,

the static friction coefficient value x and the kinetic friction coefficient value y fall within ranges expressed as
0.16≧the static friction coefficient value x≧ 0.10

0.100≧the kinetic friction coefficient value y≧ 0.080, and

size a, height b, and pitch c of concavities and convexities in the surface fall within ranges expressed as
20 μm≧ a≧ 16 μm

0.9 μm≧ b≧ 0.4 μm

30 μm≧ c≧ 26 μm.

8. A pen input device comprising:
a film; and
a sensor surface having the film attached thereto,
wherein a point determined by a combination of a static friction coefficient value x and a kinetic friction coefficient value y obtained when an input pen is moved on a surface of the film with an applied load of 250 g at a speed of 5 cm/sec falls within a region including a line segment and a neighborhood of the line segment in a coordinate system showing a static friction coefficient on the X-axis and a kinetic friction coefficient on the Y-axis, the line segment being expressed as
y= 0.3071 x+ 0.0496
0.26≧ x≧ 0.13,

the static friction coefficient value x and the kinetic friction coefficient value y fall within ranges expressed as
0.29≧the static friction coefficient value x≧ 0.23

0.140≧the kinetic friction coefficient value y≧ 0.120, and

size a, height b, and pitch c of concavities and convexities in the surface fall within ranges expressed as
30 μm≧ a≧ 26 μm

5.6 μm≧ b≧ 1.9 μm

18 μm≧ c≧ 14 μm.

Assignees

• Konica Minolta Inc

Inventors

• Hosaka Kenta
• Yamaguchi Yasuhiko
• Niwa Takamasa
• Inoue Masayuki
• Hyodo Keiichiro
• Shibata Tetsuhiro

Classifications

• G06F2200/1634

  Integrated protective display lid, e.g. for touch-sensitive display in handheld computer · CPC title

• G06F3/041

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

• G06F3/03545 Primary

  Pens or stylus · CPC title

• Y10T428/24355

  Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.] · CPC title

• G06F3/0393

  Accessories for touch pads or touch screens, e.g. mechanical guides added to touch screens for drawing straight lines, hard keys overlaying touch screens or touch pads · CPC title