CN113454580A - Surface material for pen input device - Google Patents
Surface material for pen input device Download PDFInfo
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- CN113454580A CN113454580A CN201980092583.6A CN201980092583A CN113454580A CN 113454580 A CN113454580 A CN 113454580A CN 201980092583 A CN201980092583 A CN 201980092583A CN 113454580 A CN113454580 A CN 113454580A
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Images
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03545—Pens or stylus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- G—PHYSICS
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- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
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Abstract
The present invention provides a surface material for a pen input device, which is a sheet-shaped surface material for a pen input device having an input surface to be input by a pen, wherein the total light transmittance of the surface material for a pen input device is set to a value in the range of 80% to 100%, the average length Rsm of a contour curve element of the input surface is set to a value in the range of 100 [ mu ] m or more, and the arithmetic average height W of a spheronization moire curve is set to a value in the range of 100 [ mu ] m or moreEAIs set to a value in the range of 0.6 μm or more.
Description
Technical Field
The present invention relates to a surface material for pen input devices.
Background
On a display surface of a pen input device to which an input is made with a stylus (contact), a film for the pen input device may be disposed in order to realize a feeling of pen movement such as writing on paper with a pen.
The input surface of the film for a pen input device is required to have a moderate resistance to a stylus. Therefore, as disclosed in patent document 1, for example, a pen input device film is known in which unevenness is formed on an input surface by dispersing particles having a certain particle diameter in a base portion.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2014-232277
Disclosure of Invention
Problems to be solved by the invention
In the case of a pen input device, grease of a finger sometimes adheres to an input surface due to direct input of the user pointing the input surface with a hand. Therefore, when a stylus is used to input an input to the input surface, there is a risk that the stylus may slide due to grease attached to the input surface.
As a measure against this problem, for example, a method of increasing the size of the irregularities of the input surface so that the irregularities of the input surface are not filled with grease of a finger is conceivable, but there is a possibility that the feeling of pen movement of the surface material for the pen input device is reduced.
Accordingly, an object of the present invention is to provide a surface material for a pen input device, which is attached to a surface of a display of the pen input device, so that excellent pen feeling can be obtained even when grease of a finger adheres to the input surface.
Means for solving the problems
In order to solve the above-described problems, a surface material for a pen input device according to one embodiment of the present invention is a sheet-like surface material for a pen input device having an input surface to be input with a pen, wherein a total light transmittance of the surface material for a pen input device is set to a value in a range of 80% to 100%, an average length Rsm of a contour curve element of the input surface is set to a value in a range of 100 μm or more, and an arithmetic mean height W of a spheronization waviness curve is set to a value in a range of 100 μm or moreEAIs set to a value in the range of 0.6 μm or more.
According to the above configuration, the average length Rsm of the contour curve element of the input surface and the arithmetic average height W of the rolling waviness curve are calculatedEABy setting the respective numerical ranges, it is possible to form convex portions having an appropriate size on the input surface so as to be dispersed at positions separated to some extent. Therefore, even if grease of a finger adheres to the input surface, the grease can be spread between the adjacent convex portions. This prevents the grease attached to the input surface from contacting the pen.
In addition, the average height W is calculated by rounding the waviness curveEAWhen the pen is set to the above numerical range, when the pen is used for inputting on the input surface, the vibration and acceleration of the pen when the pen is engaged with or disengaged from the concave-convex portion of the input surface can be made close to the vibration and acceleration of the pen when the pen is used for writing on paper, and excellent pen-moving feeling close to that of paper can be obtained. Thus, even when grease of a finger adheres to the input surface, excellent pen feeling can be obtained.
Further, since the total light transmittance of the surface material for pen input devices is set to a value in the range of 80% to 100%, it is possible to prevent the image display performance of the display from being degraded by attaching the surface material to the display of the pen input device.
The surface material for pen input devices comprises: the sheet-like base member and the coating member covering one surface of the base member, wherein the coating member includes a coating material extending along the one surface of the base member and filler particles dispersed in the coating material, and the average particle diameter of the filler particles other than the filler particles having a particle diameter of less than 1 μm among the filler particles contained in the coating material may be set to a value in a range of 1 μm to 15 μm.
According to the above configuration, the filler particles can form large protrusions on the input surface of the coating member. This makes it possible to prevent the pen from coming into contact with grease adhering to the input surface, and to facilitate the pen to be caught on the input surface, thereby obtaining an excellent feeling of pen movement of the surface material.
The surface of the coating member opposite to the base member may be the input surface. Thus, the surface shape of the input surface can be easily adjusted by appropriately setting the configuration of the coating member while maintaining the configuration of the base member.
The difference in refractive index between the coating material and the filler particles may be set to a value in the range of 0 to 0.07. This prevents the outgoing light from the display from being refracted at the boundary between the coating material and the filler particles. Thus, even when grease of a finger adheres to the input surface, excellent pen feeling can be obtained, and straightness of light emitted from the display through the surface material can be improved.
The rate of change F2/F1 of the kinetic friction force F2 acting on the pen when an input is performed with the pen on the input surface to which the grease of the finger has adhered, may be set to a value in the range of 0.31 or less with respect to the rate of change F2/F1 of the kinetic friction force F1 acting on the pen when an input is performed with the pen on the input surface to which the grease of the finger has adhered. By setting the input surface in this manner, even when grease of a finger adheres to the input surface, it is possible to suppress a change in pen feeling by the pen, and to easily maintain excellent pen feeling.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the aspects of the present invention, a surface material for a pen input device attached to the surface of a display of the pen input device can be obtained, so that excellent pen feeling can be obtained even when grease of a finger adheres to the input surface.
Drawings
FIG. 1 is a schematic cross-sectional view of a pen input device of an embodiment.
Description of the symbols
Surface material for 1 pen input equipment
2 base member
3 coating the component
3a input surface
4 coating material
5 Filler particles
10-stroke input device
Detailed Description
(embodiment mode)
The embodiments are described below with reference to the drawings.
[ surface Material for Pen input device ]
FIG. 1 is a schematic cross-sectional view of a pen input device 10 of an embodiment. As shown in fig. 1, the pen input device 10 includes: the device unit 6, and the pen input surface material 1 (hereinafter, simply referred to as the surface material 1). The device unit 6 has a display 7. The device unit 6 is, for example, a tablet PC, but is not limited to this, and may be a portable information terminal such as a smartphone.
The surface material 1 is formed in a sheet shape having an input surface 3a to be input with a pen. The surface material 1 of the present embodiment includes: a sheet-like base member 2, and a coating member 3 covering one surface of the base member 2. The surface material 1 has light transmittance, and the total light transmittance tt (total transmittance) is set to a value in the range of 80% to 100%. The surface material 1 is a film member here, but the thickness thereof is not limited. Therefore, the surface material 1 may be a plate member, for example.
The base member 2 is a transparent member that supports the coating member 3 on one surface and is attached to the display surface 7a of the display 7 on the other surface side. As an example, the material of the base member 2 is polyethylene terephthalate (PET), but is not limited thereto.
The base member 2 is a film member here, but the thickness dimension thereof is not limited. Therefore, the base member 2 may be a plate member, for example. When the base member 2 is a film member, the thickness of the base member 2 is set to a value in the range of, for example, several tens μm or more and several hundreds μm or less (here, a value in the range of 10 μm or more and 300 μm or less, for example, 125 μm).
The coating member 3 is a transparent member and is disposed so as to cover one surface (the upper surface 2a located on the opposite side of the display surface 7 a) of the base member 2. The coating member 3 has an input surface 3a disposed on the side opposite to the base member 2 side. The input surface 3a is a surface that contacts a pen for a pen input device. The material of the tip portion of the pen may be appropriately set, and Polyacetal (POM) is an example.
The thickness dimension of the coating member 3 is not limited. The average thickness dimension of the portion of the coating member 3 that does not overlap the filler particles 5 is set to a value in the range of, for example, several μm or more and several tens μm or less (here, a value in the range of 5 μm or more and 50 μm or less). The average thickness dimension of the coating member 3 described here is a value calculated by measuring the film thickness of any 10 locations of the coating member 3, excluding the region where the filler particles are arranged, using an optical film thickness meter and averaging the film thicknesses.
The average length Rsm of the contour curve element of the input surface 3a of the surface material 1 is set to a value in the range of 100 [ mu ] m or more, and the arithmetic average height W of the rolling waviness curveEAIs set to a value in the range of 0.6 μm or more. As an example, the haze Hz of the coating member 3 is set to a value in the range of 10% to 59%.
The average length Rsm of the contour curve element of the input surface 3a represents the average distance between adjacent concavities and convexities formed on the input surface 3 a. The larger the numerical value of the average length Rsm of the contour curve element of the input surface 3a, the more uniformly sized irregularities are formed in a spaced manner, and the smaller the numerical value, the more closely uniformly sized irregularities are formed.
In addition, the rolling waviness curve arithmetic average height W of the input surface 3aEAThe average magnitude of the vibration transmitted from the input surface 3a to the pen when the pen is slid linearly on the input surface 3a by a predetermined distance (in other words, the average magnitude of the unevenness of the input surface 3 a) is shown. Arithmetic mean height W of the rounding waviness curve of the input surface 3aEAThe larger the numerical value of (b) is, the larger the vibration (unevenness) is, and the smaller the numerical value is, the smaller the vibration (unevenness) is.
The coating member 3 of the present embodiment has: a coating material 4 extending along the upper surface 2a of the base member 2, and filler particles 5 dispersed in the coating material 4. Both the coating material 4 and the filler particles 5 have light transmittance. As the material of the base member 2 and the coating material 4, for example, the material described in japanese patent No. 6258249 can be used.
The coating material 4 comprises a binder component for fixing the filler particles 5. As an example of the binder component, the coating material 4 contains a resin material (for example, a polyfunctional (meth) acrylate having excellent strength such as scratch resistance). In addition, the filler particles 5 are, for example, acrylic particles. Here, the coating member 3 includes the filler particles 5 having a single average particle diameter, but may include a plurality of types of filler particles 5 having different average particle diameters.
In order to ensure excellent light transmittance of the surface material 1, it is preferable that the difference in refractive index between the coating material 4 and the filler particles 5 is small. In the present embodiment, the difference in refractive index between the coating material 4 and the filler particles 5 is set to a value in the range of 0 to 0.07.
In addition, in order to maintain good pen feel of the surface material 1, it is desirable that the filler particles 5 have a moderate hardness. For example, the strength (S10 strength) of the filler particles 5 when compressed by 10% using a micro compression tester is preferably set to 0.1kgf/mm2Above and 10.0kgf/mm2The values of the following ranges.
The strength of the filler particles 5 is more preferably 0.5kgf/mm2Above and 8.0kgf/mm2The value in the following range, more preferably 1.0kgf/mm2Above and 5.0kgf/mm2Hereinafter (particularly preferably 1.5 kgf/mm)2Above and 3.0kgf/mm2Below) range of values.
The average particle diameter of the filler particles 5 other than the filler particles 5 having a particle diameter of less than 1 μm among the filler particles 5 contained in the coating material 4 is set to a value in the range of 1 μm to 15 μm. The filler particles 5 are dispersed in the coating material 4 and held in the coating material 4 in a state of being coated with the coating material 4. The coating material 4 covers the filler particles 5, and locally protrudes toward the side opposite to the base member 2 side at a position corresponding to the filler particles 5 in the thickness direction.
Specifically, the coating material 4 has the convex portions 3 b. The convex portion 3b protrudes from a peripheral region of a position corresponding to the filler particles 5 in the thickness direction toward the side opposite to the base member 2. In the surface material 1, a plurality of convex portions 3b are dispersed and arranged along the input surface 3a of the coating member 3. Thus, the input surface 3a has a concave portion disposed between the adjacent convex portions 3 b.
Here, the total light transmittance can be measured by a method based on JIS K7136. The haze Hz can be measured by a method based on JIS K7136. The total light transmittance and the haze Hz can be measured by a measuring apparatus described in JIS K7136. In addition, the average length Rsm of the outline curve element and the arithmetic average height of the rolling waviness curveWEACan be measured by a method based on JIS B0601.
The average length Rsm of the profile curve element can be measured by, for example, a surface roughness shape measuring machine or a scanning white interference microscope. Arithmetic mean height W of rolling circle waviness curveEAFor example, it can be determined by a surface roughness shape measuring machine. The average particle diameter of the filler particles 5 can be measured by a method based on JIS B9916 using a light-shielding liquid particle counter.
As described above, according to the surface material 1, the average length Rsm of the contour curve element of the input surface 3a and the average height W of the rolling waviness curve arithmetic meanEAThe convex portions 3b having the appropriate size are formed on the input surface 3a so as to be dispersed at positions separated to some extent by the above numerical value ranges. Therefore, even if grease of a finger adheres to the input surface 3a, the grease can be diffused between the adjacent convex portions 3 b. This can prevent the pen from contacting the grease attached to the input surface 3 a.
In addition, the average height W is calculated by rounding the waviness curveEASetting the numerical range enables the vibration and acceleration of the pen when the pen is engaged with and separated from the concave and convex portions of the input surface 3a to be close to the vibration and acceleration of the pen when the pen is used for writing on paper when the pen is used for inputting to the input surface 3a, and excellent pen feeling close to the pen feeling of paper can be obtained. Thus, even when grease of a finger adheres to the input surface 3a, excellent pen feeling can be obtained.
Further, since the total light transmittance of the surface material 1 is set to a value in the range of 80% to 100%, it is possible to prevent the image display performance of the display 7 from being degraded by attaching the surface material to the display 7 of the pen input device 10.
Further, the surface material 1 includes: the sheet-like base member 2 and the coating member 3 covering one surface of the base member 2, wherein the coating member 3 has a coating material 4 extending along the one surface of the base member 2 and filler particles 5 dispersed in the coating material 4, and the average particle diameter of the filler particles 5 other than the filler particles 5 having a particle diameter of less than 1 μm among the filler particles 5 contained in the coating material 4 is set to a value in the range of 1 μm to 15 μm. In this way, the filler particles 5 can form the large convex portions 3b on the input surface 3a of the coating member 3. This prevents the pen from coming into contact with the grease attached to the input surface 3a, and allows the pen to be easily caught on the input surface 3a, thereby obtaining an excellent feeling of pen movement of the surface material.
In addition, in the present embodiment, since the surface of the coating member 3 opposite to the base member 2 is the input surface 3a, the surface shape of the input surface 3a can be easily adjusted by appropriately setting the configuration of the coating member 3 while maintaining the configuration of the base member 2.
Since the difference in refractive index between the coating material 4 and the filler particles 5 is set to a value in the range of 0 to 0.07, the light emitted from the display 7 can be prevented from being refracted at the boundary between the coating material 4 and the filler particles 5. Thus, even when grease of a finger adheres to the input surface 3a, excellent pen feeling can be obtained, and the straightness of the light emitted from the display 7 passing through the surface material 1 can be improved.
In the present embodiment, the rate of change F2/F1 of the kinetic friction force F2 acting on the pen when the input surface 3a with the fingerprint attached thereto is input with the pen is set to a value in the range of 0.31 or less, relative to the kinetic friction force F1 acting on the pen when the input surface 3a with the finger fat attached thereto is input with the pen. By setting the input surface 3a in this way, even when grease of a finger adheres to the input surface 3a, it is possible to suppress a change in the feeling of pen movement by the pen, and it is easy to maintain an excellent feeling of pen movement.
The arithmetic mean height W of the curve of the degree of rounding waviness on the input surface 3a of the surface material 1EAWhen the average length Rsm of the contour curve elements of the input surface 3a is less than 100 μm, the excellent feeling of pen movement may not be maintained when the grease of the finger is attached to the input surface 3 a.
Further, by setting the average particle diameter of the filler particles 5 other than the filler particles 5 having a particle diameter of less than 1 μm among the filler particles 5 contained in the coating material 4 to 1 μm or more, it is possible to easily prevent a decrease in feeling of pen movement of the input surface 3a when a pen is used to input an input to the input surface 3 a. Further, by setting the average particle diameter of the filler particles 5 to 15 μm or less, it is possible to favorably prevent the deterioration of the abrasion resistance of the input surface 3a and the increase of the abrasion of the pen.
Further, by setting the difference in refractive index between the coating material 4 and the filler particles 5 to 0.07 or less, the light emitted from the display 7 can be made to easily travel straight through the coating member 3. Further, by setting the haze Hz of the coat member 3 to a value in the range of 10% to 59%, the convex portion 3b can be easily formed while imparting antiglare properties to the input surface 3a of the coat member 3.
Average length Rsm of contour curve element of input surface 3a and average height W of rolling waviness curve arithmetic average of input surface 3aEAThe upper limit value of (b) may be set as appropriate. For example, the average length Rsm of the contour curve elements of the input surface 3a may be set to a value in a range of 363.7 or less. In addition, as an example, the arithmetic average height W of the rounding waviness curve of the input surface 3aEAThe value can be set to a range of 1.71 or less. When the average length Rsm of the contour curve element of the input surface 3a exceeds 363.7, or the arithmetic average height W of the rolling waviness curve of the input surface 3aEAWhen the amount exceeds 1.71, the wear of the pen may increase.
Hereinafter, modifications of the embodiment will be described centering on differences from the embodiment. The surface material of this modification is constituted by a single sheet member. Convex portions corresponding to the convex portions 3b are formed on the surface of the surface material. This surface material has the same surface shape as the surface material 1 and has the same total light transmittance as the surface material 1. For example, the surface shape of the surface material is formed by a sand blast method or a transfer method. The effect equivalent to that of the surface material 1 can be exhibited by such a surface material.
The surface material may be composed of a sheet-like base resin and filler particles 5 dispersed in the base resin. In the case of producing such a surface material, first, filler particles 5 are added to a resin solution that is a raw material of a base resin to prepare a conditioning solution. The surface material can be obtained by casting the conditioning liquid onto the surface of a smooth support member, curing the casting, and peeling the casting from the support member.
(confirmation test)
Next, the confirmation test will be described, but the present invention is not limited to the following examples.
Surface materials for pen input devices of examples 1 to 6 and comparative examples 1 to 6, each having a coating member having a composition shown in tables 1 and 2, were prepared. Examples 1 to 6 correspond to the surface material 1 of the embodiment in which the coating member 3 has the filler particles 5. The coating members 3 of examples 1 to 5 have two types of filler particles 5 having different average particle diameters. Example 1 had two types of filler particles 5 with average particle diameters of 15 μm and 0.6. mu.m. Example 2 has two types of filler particles 5 with average particle diameters of 10 μm and 0.6. mu.m. Examples 3 to 5 had two types of filler particles 5 having average particle diameters of 15 μm and 10 μm. Example 6 had only one filler particle 5 with an average particle size of 8 μm.
The coating members of comparative examples 1, 2 and 6 had filler particles. The coating member of comparative example 1 had filler particles with an average particle diameter of 5 μm. The coating members of comparative examples 2 and 6 had filler particles with an average particle diameter of 2 μm. The coating members of comparative examples 3 to 5 did not have filler particles, and had irregularities due to a phase separation structure formed on the input surface. The phase separation structure is a structure formed by decomposing a liquid phase of a conditioning liquid that is a raw material of the coating member through spinodal decomposition (wet spinodal decomposition). Details of the phase separation structure described herein can be found in, for example, japanese patent No. 6190581.
The preparation solutions of the coating member raw materials of examples 1 to 6 and comparative examples 1 to 6 were prepared as follows.
50 parts by weight of "AU-230" (containing a polymerization initiator and particles corresponding to filler particles) of Tokushiki, K.K., "AS-201S" of 8 parts by weight, 0.4 part by weight of "SSX-115 HXE" (particles corresponding to filler particles) of Seiki Kabushiki, K.K., and 42 parts by weight of methyl ethyl ketone were mixed to obtain a liquid preparation of example 1.
29 parts by weight of "AU-230" (containing a polymerization initiator and particles corresponding to filler particles) of Tokushiki, K.K., "AS-201S" of 21 parts by weight, 0.3 part by weight of "SSX-110" (particles corresponding to filler particles) of Water-accumulative chemical industries, and 50 parts by weight of methyl ethyl ketone were mixed to obtain a preparation of example 2.
100 parts by weight of "DPHA" available from Daicel-Allnex, 7 parts by weight of "Cellulose Acetate Propionate" available from Eastman, 3.2 parts by weight of "SSX-110 (particles corresponding to filler particles)" available from Seikagaku corporation, "1.6 parts by weight of" SSX-115HXE (particles corresponding to filler particles) "and 2 parts by weight of" Irgacure184 "were mixed, and the solid content concentration was adjusted to 31% by using a mixed solvent of methyl ethyl ketone/1-butanol/1-methoxy-2-propanol to obtain the adjusted liquid of example 3.
A liquid preparation of example 4 was prepared by mixing 100 parts by weight of "DPHA" manufactured by Daicel-Allnex corporation, 7 parts by weight of "Cellulose Acetate Propionate" manufactured by Eastman, 10 parts by weight of "SSX-110 (particles corresponding to filler particles)" manufactured by Seikagaku corporation, "4 parts by weight of" SSX-115HXE (particles corresponding to filler particles) "and 2 parts by weight of" Irgacure184 "and adjusting the solid content concentration to 31% with a mixed solvent of methyl ethyl ketone/1-butanol/1-methoxy-2-propanol.
A liquid preparation of example 5 was prepared by mixing 100 parts by weight of "DPHA" manufactured by Daicel-Allnex corporation, 7 parts by weight of "Cellulose Acetate Propionate" manufactured by Eastman, 4 parts by weight of "SSX-110 (particles corresponding to filler particles)" manufactured by Seikagaku corporation, "2 parts by weight of" SSX-115HXE (particles corresponding to filler particles) "and 2 parts by weight of" Irgacure184 "and adjusting the solid content concentration to 31% with a mixed solvent of methyl ethyl ketone/1-butanol/1-methoxy-2-propanol.
100 parts by weight of "DPHA" manufactured by Daicel-Allnex corporation, 7 parts by weight of "Cellulose Acetate Propionate" manufactured by Eastman, 4 parts by weight of "SSX-108" manufactured by Seikagaku corporation, and 2 parts by weight of "Irgacure 184" were mixed, and the concentration of the solid content was adjusted to 31% by using a mixed solvent of methyl ethyl ketone/1-butanol/1-methoxy-2-propanol, thereby obtaining an adjusted liquid of example 6.
100 parts by weight of "DPHA" manufactured by Daicel-Allnex corporation, 7 parts by weight of "Cellulose Acetate Propionate" manufactured by Eastman, 4 parts by weight of "SSX-105" manufactured by Seikagaku corporation, and 2 parts by weight of "Irgacure 184" were mixed, and the concentration of the solid content was adjusted to 31% by using a mixed solvent of methyl ethyl ketone/1-butanol/1-methoxy-2-propanol, whereby the adjusted liquid of comparative example 1 was obtained
63 parts by weight of "FA-3201 Clear" manufactured by Nippon chemical coating Co., Ltd and 37 parts by weight of "FA-3201M" manufactured by Nippon chemical coating Co., Ltd were mixed to obtain a preparation liquid of comparative example 2
A preparation liquid of comparative example 3 was obtained by dissolving 21.8 parts by weight of "Cyclomer P" manufactured by Daicel-Allnex K.K., 3.6 parts by weight of cellulose acetate propionate, 47.3 parts by weight of dipentaerythritol hexaacrylate, 11.6 parts by weight of pentaerythritol acrylate, 62.2 parts by weight of "OPSTAR Z7503" manufactured by JSR K., 1.3 parts by weight of "BYK-394" manufactured by BYK, 1 part by weight of "ZX 214A" manufactured by T & K toka, "2 parts by weight of" Irgacure184 "and 1 part by weight of" Irgacure 907 "in a mixed solvent comprising 55.1 parts by weight of methyl ethyl ketone, 19.4 parts by weight of 1-butanol, 6.3 parts by weight of 1-methoxy-2-propanol, 16.4 parts by weight of cyclohexanone and 8.9 parts by weight of butyl acetate.
A preparation liquid of comparative example 4 was obtained by dissolving 5.7 parts by weight of "Cyclomer P" manufactured by Daicel-Allnex K.K., 1.2 parts by weight of cellulose acetate propionate, 4 parts by weight of dipentaerythritol hexaacrylate, 2.77 parts by weight of silicone acrylate, and 0.5 part by weight of "Irgacure 184" in a mixed solvent comprising 25 parts by weight of methyl ethyl ketone and 12.2 parts by weight of 1-butanol.
A preparation liquid of comparative example 5 was obtained by dissolving 50 parts by weight of "Cyclomer P" manufactured by Daicel-Allnex K.K., 4 parts by weight of cellulose acetate propionate, "UA-53H" manufactured by Ninghamu chemical industries, Ltd., 76 parts by weight of silicone acrylate, 1 part by weight of silicone acrylate, "KY-1203" manufactured by shin-Etsu chemical industries, Ltd., "Irgacure 184" 1 part by weight, and "Irgacure 907" 1 part by weight in a mixed solvent containing 176 parts by weight of methyl ethyl ketone and 28 parts by weight of 1-butanol.
100 parts by weight of "FA-3201M" manufactured by Nippon chemical industry Co., Ltd and 0.4 part by weight of "XX-4229Z" manufactured by Water chemical industries Co., Ltd were mixed, and the solid content concentration was adjusted to 30% with methyl ethyl ketone to obtain an adjusted liquid of comparative example 6.
In examples 1 to 6 and comparative examples 1 to 6, the prepared solutions obtained as described above were cast onto the surface of the base member using wire bars #12 to #36 according to the target film thickness, and then subjected to a heating treatment in an oven heated to a temperature in the range of 80 ℃ or higher and 100 ℃ or lower, thereby obtaining an intermediate having a target thickness dimension. The intermediate was passed through an ultraviolet irradiation apparatus (high pressure mercury lamp manufactured by Ushio Denki Co., Ltd., ultraviolet irradiation dose 500 mJ/cm)3) And subjected to an ultraviolet curing treatment. Thereby, the coating member is formed. Thus, the surface materials of examples 1 to 6 and comparative examples 1 to 6 were obtained.
Next, the following items were examined for the surface materials of examples 1 to 6 and comparative examples 1 to 6.
[ haze and Total light transmittance ]
The total light transmittance of the surface material was measured by using a haze meter (NDH-5000W, manufactured by Nippon Denshoku K.K.) according to JIS K7136. The haze of the input surface was measured by disposing the input surface so as to be the photodetector side.
[ average length of outline Curve elements Rsm, maximum height of Rolling waviness Curve WEMArithmetic mean height W of rolling circle waviness curveEA]
The average length Rsm of the profile curve elements of the input surface and the maximum height W of the rolling circle waviness curve were measured using a surface roughness/profile shape measuring machine "Surfcom 1400G" precision manufactured by tokyo corporation in JIS B0601EMArithmetic mean height W of rolling circle waviness curveEA. The maximum height W of the rolling waviness curve of the input surface was measured under the following conditions using the above-mentioned measuring machine in accordance with JIS B0610EM。
Measuring head: ripple measuring head (0102505)
The gauge head specification: 800 mu mR ruby
Driving speed: 3mm/s
λ f lowers the critical value: 8mm
Measuring length: 25mm
[ dynamic Friction force and rate of change in dynamic friction force ]
The kinetic friction force between the pen tip and the input surface was measured by sliding PROPEN (KP-503E) (a stylus pen made of POM having a tip diameter of 2 mm) made by WACOM on the input surface at a speed of 50mm/sec under a load of 200g using a static/kinetic friction measuring instrument ("Tribomaster TL201 s" made by Trinity-Lab K.K.). This measurement was performed before and after the adhesion of an artificial fingerprint liquid (an artificial fingerprint liquid manufactured by yokei corporation having a composition based on JIS K2246) to the input surface. The adhesion of the artificial fingerprint liquid to the input surface is performed as follows: an appropriate amount of this fingerprint solution was dipped in a sponge, and the input surface was pressed 1 time with the sponge using a tactile contact (manufactured by Trinity-Lab, ltd.).
[ feeling of pen movement ]
Evaluation of the pen-feel of the input surface was performed as follows: the input was performed with a pen on the input surface, and the presence or absence of a change in pen-motion feeling before and after the artificial fingerprint liquid was attached to the input surface was evaluated.
The test results are shown in tables 1 and 2. "parts by weight" in tables 1 and 2 represents parts by weight relative to the finished coated member. The "average thickness (μm) of the coated member" represents a value calculated by measuring the film thicknesses of any 10 portions of the coated member except for the region where the filler particles are arranged by using an optical film thickness meter and averaging the film thicknesses.
[ Table 1]
[ Table 2]
As shown in tables 1 and 2, it was confirmed that in examples 1 to 6, the maximum height W of the rolling circle waviness curve of at least the input surface 3a was larger than that in comparative examples 1 to 6EMAnd the arithmetic mean height W of the rolling circle waviness curveEAThe aspect is large. In addition, it was confirmed that in examples 1 to 6, the maximum height W of the rounded flow pattern of the input surface 3a wasEMIs set to a value in the range of 7.0 to 11.2.
In examples 1 to 6, it was confirmed that the change in the dynamic frictional force acting on the pen when the artificial fingerprint liquid is attached to the input surface 3a is small before and after the artificial fingerprint liquid is attached to the input surface 3a, and the excellent feeling of pen movement is ensured. In addition, it was confirmed that in examples 1 to 5, even when filler particles having two different average particle diameters were used as the filler particles 5, excellent pen feeling was maintained.
It was confirmed that in comparative examples 1 to 6, the feeling of pen movement was changed (sliding occurred) before and after the artificial fingerprint liquid was attached to the input surface. In comparative examples 1 to 6, it is considered that the dynamic friction force acting on the pen from the input surface is greatly reduced after the artificial fingerprint liquid is adhered thereto, the feeling of pen movement is reduced, and the sliding occurs.
It was confirmed that each of the input surfaces of comparative examples 1 and 2 had a maximum height W of at least the spheronization waviness curve as compared with each of the input surfaces 3a of examples 1 to 6EMAnd the arithmetic mean height W of the rolling circle waviness curveEAThe aspect is small. In addition, it was confirmed that the average length Rsm of the outline curve elements and the maximum height W of the rounding waviness curve of each of the input surfaces of comparative examples 3 to 6 were larger than those of the input surfaces 3a of examples 1 to 6EMArithmetic mean height W of rolling circle waviness curveEAAre all small. Therefore, in any of comparative examples 1 to 6, it is considered that the pen easily comes into contact with the artificial fingerprint liquid attached to the input surface and slides after the artificial fingerprint liquid is attached to the input surface.
Here, although the average length Rsm of the contour curve element of the input surface of comparative example 1 is 100 μm or more (117.9), the arithmetic average height of the curve is calculated by the rolling circle wavinessWEAThe particle size is less than 0.6 μm (0.45), and therefore the performance is lower than those of examples 1 to 6. Therefore, in order to obtain the performance of examples 1 to 6, it is considered necessary to set the input surface so that not only the value of the average length Rsm of the outline curve element but also the arithmetic average height W of the spheronization waviness curveEAThe value of (c) can be an appropriate value. The above test results confirmed the superiority of examples 1 to 6 over comparative examples 1 to 6.
Further, according to other studies conducted by the inventors, unlike the surface materials of examples 1 to 6, it was found that the total light transmittance was set to a range of 80% or more and less than 90% or a value in a range of more than 91% and less than 100%, the average length Rsm of the contour curve element of the input surface was set to a value in a range of 100 μm or more and less than 103.1 μm, and the arithmetic average height W of the spheronization waviness curve of the input surface was set toEAThe surface material having a value in the range of 0.6 μm or more and less than 0.65 can also obtain substantially the same effects as in examples 1 to 6.
The present invention is not limited to the above-described embodiments, and modifications, additions, and deletions can be made to the embodiments without departing from the scope of the invention.
The claims (modification according to treaty clause 19)
1. A surface material for a pen input device, which is a sheet-like surface material for a pen input device having an input surface to be inputted with a pen,
wherein the total light transmittance of the surface material for a pen input device is set to a value in the range of 80% to 100%,
the average length Rsm of the contour curve element of the input surface is set to be in a range of 100 [ mu ] m or more, and the arithmetic average height W of the rolling waviness curveEAIs set to a value in the range of 0.6 μm or more,
a rate of change F2/F1 of a kinetic friction force F2 with respect to a kinetic friction force F1 is set to a value in a range of 0.31 or less, the kinetic friction force F2 being a kinetic friction force acting on the pen when an input is performed with the pen on the input surface after the grease of the finger has adhered thereto, and the kinetic friction force F1 being a kinetic friction force acting on the pen when an input is performed with the pen on the input surface before the grease of the finger has adhered thereto.
2. The surface material for a pen input device according to claim 1, comprising:
a sheet-like base member, and
a coating member covering one surface of the base member,
the coating member has: a coating material extending along the one face of the base member, and filler particles dispersed in the coating material,
the average particle diameter of the filler particles other than the filler particles having a particle diameter of less than 1 μm among the filler particles contained in the coating material is set to a value in a range of 1 μm or more and 15 μm or less.
3. The surface material for a pen input device according to claim 2,
the surface of the coating member opposite to the base member is the input surface.
4. The surface material for a pen input device according to claim 2 or 3,
the difference in refractive index between the coating material and the filler particles is set to a value in the range of 0 or more and 0.07 or less.
5. A pen input device which is a pen input device having an input surface to be input with a pen,
wherein the average length Rsm of the contour curve element of the input surface is set to a value in a range of 100 [ mu ] m or more, and the arithmetic average height W of the rolling waviness curveEAIs set to a value in the range of 0.6 μm or more,
a rate of change F2/F1 of a kinetic friction force F2 with respect to a kinetic friction force F1 is set to a value in a range of 0.31 or less, the kinetic friction force F2 being a kinetic friction force acting on the pen when an input is performed with the pen on the input surface after the grease of the finger has adhered thereto, and the kinetic friction force F1 being a kinetic friction force acting on the pen when an input is performed with the pen on the input surface before the grease of the finger has adhered thereto.
Claims (5)
1. A surface material for a pen input device, which is a sheet-like surface material for a pen input device having an input surface to be inputted with a pen,
wherein the total light transmittance of the surface material for a pen input device is set to a value in the range of 80% to 100%,
the average length Rsm of the contour curve element of the input surface is set to be in a range of 100 [ mu ] m or more, and the arithmetic average height W of the rolling waviness curveEAIs set to a value in the range of 0.6 μm or more.
2. The surface material for a pen input device according to claim 1, comprising:
a sheet-like base member, and
a coating member covering one surface of the base member,
the coating member has: a coating material extending along the one face of the base member, and filler particles dispersed in the coating material,
the average particle diameter of the filler particles other than the filler particles having a particle diameter of less than 1 μm among the filler particles contained in the coating material is set to a value in a range of 1 μm or more and 15 μm or less.
3. The surface material for a pen input device according to claim 2,
the surface of the coating member opposite to the base member is the input surface.
4. The surface material for a pen input device according to claim 2 or 3,
the difference in refractive index between the coating material and the filler particles is set to a value in the range of 0 or more and 0.07 or less.
5. The surface material for a pen input device according to any one of claims 1 to 4,
the rate of change F2/F1 of the following kinetic friction force F2 with respect to the following kinetic friction force F1 is set to a value in the range of 0.31 or less,
the kinetic friction force F2 is a kinetic friction force acting on the pen when an input is performed with the pen on the input surface to which the grease of the finger has been attached, and the kinetic friction force F1 is a kinetic friction force acting on the pen when an input is performed with the pen on the input surface to which the grease of the finger has not been attached.
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Also Published As
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| CN113454580B9 (en) | 2022-05-06 |
| WO2020213156A1 (en) | 2020-10-22 |
| JP6638119B1 (en) | 2020-01-29 |
| TW202039229A (en) | 2020-11-01 |
| CN114995668A (en) | 2022-09-02 |
| TWI700187B (en) | 2020-08-01 |
| CN113454580B (en) | 2022-04-08 |
| JPWO2020213156A1 (en) | 2021-05-06 |
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