Fujifilm Corporation

Shinya Ogikubo

Hirochika Nakamura

Michihiro Shibata

Yasuhiro Mitamura

Koichi Kimura

Fumihiko Mochizuki

The present invention provides a capacitive touch panel in which malfunction hardly occurs even when an operation is performed after a finger of an operator touches the capacitive touch panel for a long period of time in an ordinary temperature. The capacitive touch panel according to the invention is a capacitive touch panel comprising: a display device; a lower pressure sensitive adhesive layer; a capacitive touch panel sensor; an upper pressure sensitive adhesive layer; and a protective substrate, in this order, in which temperature dependence of a relative dielectric constant of the upper pressure sensitive adhesive layer which is obtained by a temperature dependency evaluation test described below is 10.0% or less.

Capacitive touch panel

In an adhesive sheet, temperature dependence of a relative dielectric constant that is determined by a test for evaluating temperature dependence is equal to or less than 30%, and a 180&#xb0; peel strength determined by a test for evaluating adhesiveness is equal to or greater than 0.20 N/mm. The adhesive sheet can inhibit the occurrence of malfunctioning of a capacitance-type touch panel in an environment of a wide temperature range from a low temperature to a high temperature, and can be included in a laminate for a touch panel and a capacitance-type touch panel.

Adhesive sheet, laminate for touch panel, and capacitance-type touch panel

The invention provides a capacitive touch panel that hardly cause malfunction in a wide range of temperature environment from a low temperature to a high temperature. The capacitive touch panel according to the invention is a capacitive touch panel including a display device, a lower adhesive layer, a capacitive touch panel sensor, an upper adhesive layer, and a protective substrate in this order, in which a maximum value of tan &#x3c3; of the upper adhesive layer and a maximum value of tan &#x3c3; of the lower adhesive layer obtained from a temperature dependency evaluation test is 0.08 or less, and tan &#x3c3; of the lower adhesive layer at each temperature of every 20&#xb0; C. from &#x2212;40&#xb0; C. to 80&#xb0; C. is equal to or less than tan &#x3c3; of the upper adhesive layer.

A capacitance touch panel includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer, and a protective substrate, which are formed in this order. A temperature dependency of relative permittivity in the upper adhesive layer and a temperature dependency of relative permittivity in the lower adhesive layer as determined by a temperature dependency evaluation test are both up to 30%.

Capacitance touch panel

A capacitance touch panel of the invention includes a display, a lower adhesive layer, a capacitance touch panel sensor, an upper adhesive layer and a protective substrate, which are formed in this order. Relative permittivity A in the upper adhesive layer and relative permittivity B in the lower adhesive layer satisfy expression (1): [relative permittivity A&#x2267;relative permittivity B . . . (1)] at respective temperatures set in increments of 20&#xb0; C. from &#x2212;40&#xb0; C. to 80&#xb0; C., and a temperature dependency of the relative permittivity B in the lower adhesive layer as determined by a temperature dependency evaluation test is up to 30%.

An optical scanning element is provided and includes: a substrate; a first movable section supported on the substrate so as to be capable of rocking displacement about a first axis parallel to a surface of the substrate; a second movable section arranged integrally on the first movable section and supported so as to be capable of rocking displacement about a second axis perpendicular to the first axis, the second movable section having a micro mirror on an upper surface thereof; and a driving section that applies a physical action force on the first movable section and the second movable section so as to cause the micro mirror to perform rocking displacement in two axial directions about the first axis and the second axis.

Optical scanning element, driving method for same, and optical scanning probe employing optical scanning element

A small thin film-movable element is provided and includes: a movable portion supported elastically deformably and capable of being displaced bidirectionally in one direction and a direction reverse thereto; a first drive source for applying a physical acting force to the movable portion, in which the movable portion produces a modulating or switching function by the first drive source; and a second drive source, which is different from the first drive source, for increasing or reducing an absolute value of the physical acting force to restrain a vibration of the movable portion in driving to displace the movable portion in a first direction by the first drive source.

Small thin film-movable element, small thin film-movable element array and image forming apparatus

An optical modulator element comprises: a substrate; an obliquely displacing member capable of displacing obliquely, the obliquely displacing member being above the substrate and having at least one opening portion through which a light incident on the substrate from a light source is passed; and an extended portion extended from a surface of the obliquely displacing member to correspond to the opening portion and to block the light incident on the opening portion in answer to a displacement of the obliquely displacing member.

Optical modulator element and image forming apparatus

A microelectromechanical device array apparatus is provided and includes: an device array one-dimensionally or two-dimensionally arranged with devices including a movable portion having movable electrodes and fixed electrodes facing to the movable portion for displacing the movable portion to one of two different positions; and a drive circuit for inclining the movable portion by writing an device-displacing signal to the fixed electrodes and applying a control voltage to the movable electrodes when the device in a first state of controlling to displace the position of the movable portion from one to the other of the two different positions and the device in a second state of controlling to maintain the position of the movable portion at one position of the two different positions, there is brought about a state in which the device in the first state crosses over pull-out and the device in the second state does not cross over the pull-out.

Microelectromechanical device array apparatus and method for driving same

An optical scanning probe is provided and includes an optical scanning element which scans a subject with light, and a signal switching section for switching a drive signal for making the optical scanning element perform optical scanning. The optical scanning element includes a movable portion having a micro mirror which is displaced in a first rotating direction and a second rotating direction, and first and second drivers which apply physical acting forces to the movable portion. The signal switching section has a function for switching a driving preparation signal for attracting the movable portion in either the first rotating direction or the second rotating direction into a scanning drive signal for attracting the movable portion in the first rotating direction and the second rotating direction alternately. The maximum voltage of the driving preparation signal is set value to be higher than the maximum voltage of the scanning drive signal.

Optical scanning probe, optical scanning probe device and method for controlling the optical scanning probe

In a microelectromechanical device array including an array of devices arranged at least one of one-dimensionally and two-dimensionally each of which includes a movable portion that is supported to be elastically deformed and that has a movable electrode on at least one part thereof and fixed electrodes that are disposed to face the movable portion and by which the movable portion is moved to one of at least two different positions, hold electrodes are disposed beside the fixed electrodes, and a hold voltage is applied to the hold electrodes and before rewriting an address voltage that is applied to the fixed electrodes so as to fix the position state of the movable portion.

Microelectromechanical device array and method for driving the same

A microelectromechanical modulation device comprising: a movable portion, which is supported to be elastically and bi-directionally displaced and which has a modulation function; and a plurality of driving sources operative to apply a physical action force to said movable portion, wherein when said movable portion is displacement-driven in a first direction, a physical action force for suppressing oscillation of said movable portion is applied to said movable portion in a second direction different from the first direction by said drive sources while said movable portion is transited in the first direction.

Microelectromechanical modulation device and microelectromechanical modulation device array, and image forming apparatus

A micro-electro-mechanical systems element array device in which plural micro-electro-mechanical systems elements each having a movable portion are arranged in an array, said movable portion being to be displaced by a physical force which is generated by applying an electric signal to a conductive portion, and each of said micro-electro-mechanical systems elements drives and displaces said movable portion of said micro-electro-mechanical systems element on the basis of a displacement data for said micro-electro-mechanical systems element, wherein said device comprises: an electric signal generating unit as defined herein; a switching unit as defined herein; and a selecting unit as defined herein.

Micro-electro-mechanical systems element array device and image forming apparatus

A small thin film movable element comprises; a movable portion supported elastically deformably and having a movable electrode at at least a portion of the movable portion; and a fixed electrode arranged to be opposed to the movable portion, wherein the movable portion is displaced by an electrostatic force in accordance with a voltage applied to the movable electrode and the fixed electrode, and wherein the voltage applied in displacing the movable portion falls in a range equal to or lower than a static pull-in voltage for bringing the movable portion into contact with a side of the fixed electrode against a resistance force generated in accordance with an amount of displacing the movable portion and equal to or higher than a minimum dynamic pull-in voltage for bringing the movable portion into contact with the side of the fixed electrode by being compounded with an inertia force generated in accordance with an operation of the movable portion.

Small thin film movable element, small thin film movable element array and method of driving small thin film movable element array

A method of driving a small electromechanical element, which includes: an elastic portion accumulating an elastic energy by being deformed elastically; a movable portion supported by the elastic portion; and a drive source exerting a physical acting force to maintain the movable portion, is provided. The movable portion is displaced to one normal position, an elastic energy is accumulated to the elastic portion, thereafter, the movable portion is maintained at one normal position by a physical acting force. Further, by releasing the elastic energy by stopping the physical acting force, the movable portion is displaced to other normal position while accumulating again an elastic energy having a polarity reverse to that of the preceding elastic energy and is maintained at other normal position. Thereby, the movable portion is displaced only by the elastic energy accumulated to the elastic portion without depending on the physical acting force from outside.

Growing community of inventors

Kanagawa, Japan

Shinya Ogikubo