Sharp Kabushiki Kaisha Corporation

Microwave Chemical Co., Ltd.

Masahiro Imai

Noriyuki Nakane

Nobuaki Takahashi

Koichi Yoshioka

Kunihiko Yamamoto

Hideshi Kurihara

Hisao Watanabe

Yoshihiko Katsuda

Norihisa Shintani

Kohei Kitagawa

Takanobu Murata

Takashi Koizumi

The present invention provides a mixing impeller and the like capable of properly performing mixing. A mixing impeller includes multiple blade pairs each having two blades, wherein the blades included in the multiple blade pairs are attached around a rotational shaft extending in a lateral direction, so as to be positioned at a same position in an axial direction of the rotational shaft, the two blades of each blade pair each have a shape that is symmetric about a symmetry plane that is a plane perpendicular to the rotational shaft, the two blades of each blade pair are formed so as to extend from the rotational shaft side toward an outer circumferential side, which is a side opposite to the rotational shaft side, and blade outer portions that are on the outer circumferential side are bent toward a side on which the two blades face each other.

Mixing impeller and treatment apparatus

A display device includes substrates, pixels, an inter-pixel light blocking portion, a spacer, a spacer non-arranged portion, and a spacer arranged portion. The pixels are arranged in each of a first direction and a second direction perpendicular to each other. The inter-pixel light blocking portion includes at least one first partition portion partitioning the pixels arranged in the first direction and at least one second partition portion partitioning the pixels arranged in the second direction. The spacer is disposed between the substrates. The spacer non-arranged portion in which the spacer is not arranged is included in the first partition portion. The spacer arranged portion in which the spacer is arranged is included in the first partition portion. The spacer arranged portion wider than the spacer non-arranged portion has a formation area straddling the second partition portion with respect to the second direction.

Display device and head-mounted display

In a liquid crystal display device, an auxiliary capacitance wiring driver changes a potential of an auxiliary capacitance wiring so that a dielectric torque of liquid crystal molecules of a pixel (PXj) to which a minimum voltage corresponding to a backlight is written becomes larger while the backlight is turned off, and a scanning signal line driver drives a scanning signal line so that image data is written to the pixel in a state in which the potential of the auxiliary capacitance wiring is changed so that the dielectric torque of the liquid crystal molecules of the pixel becomes larger.

Liquid crystal display device and method of driving liquid crystal display device

The present invention provides an active matrix display device capable of producing a favorable display on a non-rectangular display unit, such as a circular display unit. In an active matrix liquid crystal display device with a circular display unit, a control signal Sck is generated so as to reduce a decrease amount &#x394;Vsl of a data signal line voltage Vsl due to a parasitic capacitance Cgd, as a control signal of an Nch transistor (SWk) that is a switching element of a sample-and-hold circuit for sampling a video signal Svi and holding the sampled signal in a data signal line capacitance. That is, at the time of turning off the Nch transistor (SWk), a connection switch control signal Sck is generated such that the control signal Sck changes from an H-level connection control voltage VCH as an on-voltage to an L-level connection control voltage VCL as an off-voltage through a period TCI for an intermediate level voltage VCI.

Active matrix display device and method for driving same

The interface circuit is provided with: a differential output circuit in which the output of a potential level of a differential signal stabilizes after a prescribed period from a start signal; and a counter circuit that performs control in such a manner that a data processing operation of a data processing unit is not performed on a signal based on the differential signal during the prescribed period. Thus, a liquid crystal display device that is capable of preventing a distorted video from being displayed in an initial drive period can be achieved.

Interface circuit and display device

In the case where input terminals of a display driver circuit are compatible with two or more types of interface specifications, an LSI chip, which is the display driver circuit, has some input terminals connected to parallel data lines and its output terminals connected to display lines, and these input terminals and output terminals are arranged along a long side located on the display portion side. In at least one example embodiment, the rest of the input terminals, which are intended for parallel interface, are arranged along a long side located on the FPC board side. With this configuration, the long sides of the LSI chip can be rendered shorter (than in the case where all input terminals are arranged in a row) without causing malfunction.

Display driver circuit and board module including same

A source driver () includes: a first amplifier circuit and a second amplifier circuit each amplifying either one of input signals that are in-phase and antiphase; and a switching control circuit () which supplies an offset switching signal () for switching the input signals, the switching control circuit () supplying the offset switching signal () having a higher frequency than a horizontal synchronization signal. This provides a display drive circuit capable of enhancing a display quality while preventing a flicker from occurring in an entire display screen.

Display drive circuit, display device and method for driving display drive circuit

Provided is a liquid crystal display devicethat divides '3m' video signal lines into groups of three lines according to an order of arrangement, and drives the video signal lines in the group within one horizontal period in a time-division manner. A pixel arrayis configured such that columns each including pixel circuits for left eyearranged along a vertical direction of a display screen and columns each including pixel circuits for right eyearranged along the vertical direction of the display screen are arranged along a horizontal direction of the display screen. When driving the video signal lines in a time-division manner, a writing order to pixel circuitswithin one horizontal period and a polarity of a voltage to be applied to the pixel circuitsare changed every two scanning signal lines. This improves image quality of both an image for left eye and an image for right eye, thereby improving image quality in stereoscopic display.

Stereoscopic display device

The present invention has an object of obtaining excellent anti-noise performance and a high level of flexibility in a flexible circuit board. A flexible circuit boardaccording to the present invention has a flexible insulating base material, a plurality of wiring patternsformed at prescribed intervals on one surfaceof the insulating base material, and a conductive layerformed on the other surfaceof the insulating base material. The conductive layeris disposed so as to overlap first wiring patternsA, which is a select set among the plurality of wiring patterns, and does not overlap all of the wiring patterns

Flexible circuit board and display device

A master device and slave devices are connected with each other through an SDA and an SCL, and at least one of a serial communication data signal communicated through the SDA and a serial communication clock signal communicated through the SCL is latched with use of a noise removal clock signal whose frequency is higher than that of the serial communication clock signal, and is taken in.

Serial data communication method and serial data communication device

Provided is a liquid crystal display device () including: a liquid crystal display panel unit (); a backlight unit (); and a front bezel (BZ) and a rear bezel (BZ) for housing the liquid crystal display panel unit and the backlight unit. The liquid crystal display panel unit includes an FPC board () which winds around side walls (WL) and a bottom surface () of the rear bezel so as to cover the side walls (WL) and the bottom surface (). Outer claw sections (CW) projecting inward from the side walls (WL) of the front bezel and inner claw sections (CW) projecting outward from the side walls of the rear bezel are engaged with each other through openings (HL) provided in the FPC board, thereby integrating the front bezel and the rear bezel.

Electronic package, display device, and electronic device

An FPC board () is mounted on a front bezel (BZ) and a rear bezel (BZ). The outer claw (CW) of the front bezel (BZ) and the inner claw (CW) of the rear bezel (BZ) are engaged with each other while holding the ground portion () of the FPC board () therebetween.

Electronic package, display, and electronic device

The present invention relates to a display device and, more particularly, to an active matrix-type display device employing a line inversion drive scheme as a drive scheme. In a liquid crystal display device employing the line inversion drive scheme as a drive scheme, a predetermined video signals are applied to video signal lines in a predetermined period after start of a vertical blanking period. When a vertical scanning period starts in an even-numbered frame, a source potential (VS) decreases by &#xbd; of amplitude in an effective video period. After the decreased source potential (VS) is maintained only for one horizontal scanning period, source bus lines are set to a high-impedance state. When a vertical scanning period starts in an odd-numbered frame, the source potential (VS) rises by &#xbd; of amplitude in the effective video period. After the risen source potential VS is maintained only in one horizontal scanning period, the source bus lines are set to a high-impedance state.

Display device, its driving circuit, and driving method

A driving voltage generating circuit of a matrix-type display device includes a voltage dividing resistor group composed of a plurality of voltage dividing resistors connected in series, for dividing a potential a difference of a reference voltage. It also includes operational amplifiers for generating and outputting row voltages (a selective voltage and a non-selective voltage) to be applied to row electrodes, by subjecting each voltage obtained by voltage division to impedance conversion. A p-channel MOSFET and an n-channel MOSFET as analog switches for altering a level of each voltage thus generated are provided in parallel with voltage dividing resistors at ends of the voltage dividing resistor group. With this arrangement, the number of elements necessary for the circuit, for example, MOSFETS and level shifters for controlling the MOSFETS, can be decreased. Therefore, the size of the driving voltage generating circuit can be reduced. As such, price lowering and reduction of power consumption can be achieved.

Driving voltage generating circuit for matrix-type display device

A method for driving a liquid crystal display device including a liquid crystal panel which has a pair of substrates facing each other with a liquid crystal layer interposed therebetween and respectively having signal electrodes and scanning electrodes which are located perpendicular to each other, wherein the liquid crystal panel is divided into a plurality of display portions, and the signal electrodes and the scanning electrodes are driven on a display portion by display portion basis, thereby achieving display on the display portions individually, the method comprising the step of detecting and correcting distortion of a signal on each of the signal electrodes or each of the scanning electrodes on a display portion by display portion basis.

Growing community of inventors

Osaka, Japan

Masahiro Imai