Canon Kabushiki Kaisha

Shigeki Yabu

Hiroshi Takabayashi

Yoshihiro Onitsuka

Makoto Uehara

Takeo Tsukamoto

Toshiaki Itazawa

Katsumi Kurematsu

Masanori Takahashi

Osamu Yuki

Tetsuya Shimada

Hisao Tajima

Noritake Suzuki

Yasushi Shioya

Mitsuo Iwayama

Hiroyuki Yokomizo

Yasushi Maeda

Kumiharu Takai

Hidetarou Tsuchiya

A display device includes a display panel having cathodes, gates, and anodes in which the cathodes and the gates are connected in a matrix manner, and an electron emitter which emits electrons in a state where a voltage is applied only between the cathodes and the anodes and which is provided with the cathode. A display of pixels is performed under a dark state by stopping electron emission from the electron emitter for the anodes by applying a stop voltage between the cathodes and the gates. In addition, a controller controls operation of a circuit for driving a display panel in such a way that a potential of each of the anodes becomes not less than a threshold value potential by which the potential of each of the anodes can perform electron emission from the electron emitter after a predetermined time elapse from starting of application of a drive voltage which provides a specified display state or the stop voltage between the cathodes and the gates when a display starting signal is generated.

Display device and drive control method therefor

In a display device and a driving and controlling method therefor, in order to restrain the occurrence of an unsatisfactory display state or unsatisfactory luminescence in the case where an anode potential is made to transition from a supply state to a cut-off state in response to the generation of a display completing signal, when a display signal DS is generated at time t, an anode potential Va is raised at time t, and at time tuntil which a predetermined time Tdpasses after the anode potential Va decreases below a threshold potential Vth with a cut-off voltage applied between cathodes and an anode, the application of the cut-off voltage is completed.

Display device and driving and controlling method therefor

An image forming apparatus comprising: a cathode; a gate; an anode; an electron emitting element arranged on the cathode; an image forming member that is arranged opposite to the electron emitting element; a deflection electrode that deflects the orbit of the electron emitted from the electron emitting element and headed toward the anode; and a driver, wherein assuming that an electric field required to start electron emission from the electron emitting element is Ee, that an electric field applied to the electron emitting element by applying voltage to the anode is Ea and that an electric field applied to the electron emitting element by applying voltage to the gate is Eg, the driver applies voltages to the cathode, the gate, and the anode in such a way that (i) Ea&#x3e;Ee or (ii) Ea+Eg&#x3e;Ee and Ea&#x3e;Eg is satisfied.

Image forming apparatus and method for driving and controlling the same

A display apparatus includes a display unit for displaying images, a backlight unit disposed behind the display unit for illuminating the display unit, an inverter unit for electrically controlling the backlight unit, a controller unit for controlling the inverter unit and the display unit, and a power supply unit having an exothermic heat distribution for supplying electricity to the inverter unit and the controller unit. The inverter unit and controller unit are disposed behind the backlight unit and the power supply unit is disposed on a side of the display unit, backlight unit, inverter unit and controller unit. The display unit, backlight unit, inverter unit, controller unit and power supply unit are disposed in a common housing. The inverter unit and the controller unit are arranged behind the backlight unit. An insulating member is further disposed between the power supply unit and the display unit at a position corresponding to a region of relatively large exothermic heat of the power supply unit, and the insulating member is disposed at a diagonal position with respect to the inverter unit. The display apparatus may be supported by a support structure including vertically tilting and laterally turning mechanisms.

Display apparatus

A rear right source device having a lamp chamber in which straight-tube light source lamps are arranged in the vertical direction. The light source device includes a ventilating hole formed on the upper lateral face of the lamp chamber for releasing the air of the lamp chamber heated by the light source lamps to the extrior, and a seal member mounted on the lower lateral face of the lamp chamber and substantially closing the gap between the lamp and an aperture for inserting the lamp.

Light source for display device

A liquid crystal display apparatus is constituted by: a housing; a liquid crystal panel comprising a liquid crystal disposed between a pair of substrates each provided with electrodes, the liquid crystal panel being affixed to the housing; and a backlight for illuminating the liquid crystal panel, detachably affixed to the housing. A light-transmissive plate, such as a diffusion plate, allowing transmission of light from the backlight is further disposed between the liquid crystal panel and the backlight so as to define an almost closed first space in cooperation with the liquid crystal panel, whereby the first space retaina its almost closed state even when the backlight is detached from the housing.

Liquid crystal display apparatus in which a non-transmissive elastic

There is disclosed a method of connecting an external circuit, including the steps of disposing between an electrode for connecting the external circuit connected with an electrode for driving a liquid crystal panel and an external circuit electrode connected with the external circuit, a film comprising an insulating resin containing conductive particles dispersed therein, and applying a pulse voltage to a heat tool under the pressure-applied state.

External-circuit connecting and packaging structure

There is disclosed a method of connecting an external circuit, comprising including the steps of disposing between an electrode for connecting the external circuit connected with an electrode for driving a liquid crystal panel and an external circuit electrode connected with the external circuit, a film comprising an insulating resin containing conductive particles dispersed therein, and applying a pulse voltage to a heat tool under the pressure-applied state.

Growing community of inventors

Machida, Japan

Shigeki Yabu