Sharp Kabushiki Kaisha Corporation

Ryoh Kikuchi

Takehiro Murao

Hiroshi Fukushima

Takuto Yoshino

Nathan James Smith

Tomoo Takatani

Takayuki Yamada

Andrew Acreman

Kimitaka Nomura

André Filipe Marques Da Silva

Hywel Hopkin

Yasuyuki Togashi

Kenichiroh Tsuchida

Martin Paul Buckthorpe

A light-emitting device includes: a first layer; a second layer; a light-emitting element layer positioned between the first layer and the second layer and including a light-emitting element; a first adhesive layer positioned between the first layer and the light-emitting element layer, and having a thickness of 10 μm or greater and less than 25 μm and a shear modulus at 23 degrees Celsius of 4.0E+04 Pa or greater and less than 1.0E+05 Pa; and a second adhesive layer positioned between the light-emitting element layer and the second layer, and having a thickness of greater than 0 μm and no greater than 15 μm and a shear modulus at 23 degrees Celsius of 1.0E+05 Pa or greater.

Light-emitting device and display device having first and second adhesive layers of different shear modulus

A liquid crystal (LC) device includes an optical stack arrangement including from the viewing side: a first electrode component; a first LC alignment layer; an LC layer; a second LC alignment layer; and a second electrode component. A voltage is applied to the LC device to create a potential difference between the first and second electrode components to switch an alignment of liquid crystals of selected portions of the LC layer from a first state when no voltage is applied to a second state when the voltage is applied. The first and second LC alignment layers are vertical alignment layers that induce a vertical alignment of the liquid crystals such that the first state when no voltage is applied is a vertical alignment state, and the liquid LC crystals switch to a planar alignment state as the second state when the voltage is applied. The first and/or second electrode components is a dual layer segmented electrode component comprising a first layer of electrode elements separated by inter-electrode gaps and a second layer of electrode elements separated by inter-electrode gaps, the first layer of electrode elements and the second layer of electrode elements being spaced apart in a viewing direction by an insulator layer.

Liquid crystal parallax barrier and method of addressing

Provided is a display device capable of high-quality three-dimensional displaying. During three-dimensional displaying for a viewing position &#x3b2;, in a first term, an entirety of a first predetermined region of a second liquid crystal panel takes on a light-blocking state and a first adjacent region, which is adjacent to the first predetermined region in the first direction, takes on a light-transmitting state. In a second term, at least one of two side regions in the first predetermined region takes on the light-transmitting state, a remaining region of the first predetermined region takes on the light-blocking state, and at least part of the first adjacent region takes on the light-transmitting state.

Display device and liquid crystal panel driving method

A reconfigurable parallax barrier panel comprising an electro-optic material has a first region, a second region and a first compensation region. First electrodes are addressable to define, in the first region of the panel, a parallax barrier array selected from a plurality of predetermined parallax barrier arrays, and second electrodes are addressable define, in the second region of the panel, independently of the first parallax barrier array, a parallax barrier array selected from the plurality of predetermined parallax barrier arrays. Electrodes of the first compensation region are addressable to define, dependent on the first parallax barrier array and on the second parallax barrier array, at least one slit and/or at least one barrier between the first region and the second region. Where the first electrodes are addressed to define a first one of the predetermined parallax barrier arrays in the first region and the second electrodes are addressed to define a second, different one of the predetermined parallax barrier arrays in the second region, the electrodes of the first compensation region may define the at least one slit and/or at least one barrier to at least partially obscure any line artefact at the transition between the first one of the predetermined parallax barrier arrays and the second one of the predetermined parallax barrier arrays.

Parallax barrier with independently controllable regions

A reconfigurable parallax barrier panel, for use in a display system with a 3D mode, includes a first substrate, a second substrate, and an electro-optic material positioned between the first and second substrates. The first and second substrates each respectively has a plurality of first and second electrodes, the electrodes being independently addressable from one another and comprising a plurality of electrode portions extending along a first direction and laterally spaced from one another along a second direction different from the first direction. The electrode portions of the first electrodes are arranged in a cyclic arrangement having a first pitch, and the electrode portions of the second electrodes are arranged in a cyclic arrangement having a second pitch that is different to the first pitch. The first and second electrodes are driven to generate different reconfigurable parallax barrier arrays corresponding to different viewing distances in a 3D mode of operation.

Dual-pitch parallax barrier

A stereoscopic display device () of the present invention includes a display panel (), a switch liquid crystal panel (), a first polarizing plate () and a second polarizing plate (), and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with position information, and causing the switch liquid crystal panel () to display the parallax barrier. A first alignment film () and a second alignment film () of the switch liquid crystal panel () are rubbed so that molecule long axes of liquid crystal molecules in the vicinities of the center of a liquid crystal layer () in the thickness direction in a state where no voltage is applied are oriented in a direction perpendicular to the alignment direction as viewed in a plan view. Retardation of the liquid crystal layer () is in a range of 380 nm to 466 nm both inclusive when an intersection angle that is an angle formed between a rubbing direction of the first alignment film () and a transmission axis of the first polarizing plate () is in a range of 0&#xb0; exclusive to 18&#xb0; inclusive, and is in a range of 410 nm to 450 nm both inclusive when the intersection angle is in a range of 18&#xb0; exclusive to 45&#xb0; inclusive.

Stereoscopic display device

A display device () includes a display panel (), a switch liquid crystal panel (), and a control unit (). The switch liquid crystal panel () includes a transparent electrode () provided in an active area (AA) on at least one of a first substrate () and a second substrate (), and a metal line () provided outside the active area (AA) on at least one of the first substrate () and the second substrate (), along four sides of the active area (AA).

Display device

Obtained is a configuration of a stereoscopic display device that allows a viewer to easily correct settings for stereoscopic display. A stereoscopic display device () includes: a display panel () for displaying an image; a switch liquid crystal panel () that is arranged so as to be stacked on the display panel (); a position sensor for acquiring position information of a viewer; and a control unit for causing the switch liquid crystal panel () to display a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction. The control unit has, as operation modes, at least a tracking mode in which, according to the position information, the parallax barrier is moved in the alignment direction and is displayed on the switch liquid crystal panel (), and a calibration mode for calibration of a reference position of the position information. The control unit sets a width of the transmitting region of the parallax barrier in the tracking mode, and a width of the transmitting region of the parallax barrier in the calibration mode, so that the widths are different from each other.

A configuration of a stereoscopic display device that is capable of maintaining crosstalk at a low level even when a viewer moves is provided. A stereoscopic display device () includes: a display panel () for displaying an image; a switch liquid crystal panel () that is arranged so as to be stacked on the display panel (); a position sensor for acquiring position information of a viewer; and a control unit for moving a parallax barrier in which transmitting regions and non-transmitting regions are formed in periodic fashion in a predetermined alignment direction, in such a manner that the parallax barrier is moved in the predetermined alignment direction in accordance with the position information, and causing the switch liquid crystal panel () to display the parallax barrier. The switch liquid crystal panel () includes: a liquid crystal layer () in which refractive index anisotropy &#x394;n of liquid crystal molecules is 0.14 or less; a first substrate () and a second substrate () that face each other with the liquid crystal layer () being interposed therebetween; and an electrode group including a plurality of electrodes that are formed on at least one of the first substrate () and the second substrate () and are arranged in the alignment direction.

The objective is to provide a stereoscopic display device that can be switched among 2D display mode, 3D display mode and mirror mode. The device includes: a display panel (); a switch liquid crystal panel (); an absorptive polarizer (); and a reflective polarizer (). The switch liquid crystal panel () is located closer to the viewer than the display panel () is. The absorptive polarizer () is located closer to the viewer than the switch liquid crystal panel () is. The reflective polarizer () is located between the display panel () and the switch liquid crystal panel (). The reflective polarizer () has a transmission axis (L) perpendicular to the transmission axis (L) of the absorptive polarizer () and passes those components of light entering the reflective polarizer () that are parallel to the transmission axis (L) while reflecting those components that are perpendicular to the transmission axis (L).

Provided is a switching liquid crystal panel and a display device that have novel structures that are capable of preventing luminous regions from appearing in the light transmitting parts, in the vicinities of boundaries thereof with the light shielding parts. The switching liquid crystal panel includes a pair of substrates () having a twisted nematic type liquid crystal layer () interposed therebetween, and a plurality of light shield forming electrodes () that are formed on at least one of the pair of the substrates () and that form light shielding parts () of a parallax barrier () in cooperation with a counter electrode () when a voltage is applied, the counter electrode () being is opposed to the light shield forming electrodes () with the liquid crystal layer () interposed therebetween. A rubbing direction for an alignment film () provided on the substrate () side on which the light shield forming electrodes () are formed is at an angle of 45&#xb0; or less to a lengthwise direction of the light shield forming electrodes ().

Switching liquid crystal panel and display device

An arrangement with a shared polarizer disposed between two panels capable of displaying a 3D image using parallax barrier techniques is provided, where the quality of a displayed 3D image is prevented from decreasing due to the left-right imbalance in contrast ratio. The arrangement includes: a main panel; a switch panel for displaying a slit image serving as a parallax barrier; a polarizer located closer to the viewed side of the main panel; a polarizer located between the main panel and the switch panel; and a polarizer located closer to the side of the switch panel opposite the side closer to the main panel. The direction of rubbing for one of the alignment films of the switch panel is at an angle relative to the absorption axis of one of the polarizers such that a contrast ratio within a view range of the left and right eyes is equal to or higher than a reference value, the contrast ratio being measured on a visual line corresponding to the transmission axis of one of the polarizers.

Growing community of inventors

Osaka, Japan

Ryoh Kikuchi