Sharp Kabushiki Kaisha Corporation

Dai Chiba

Yoshiharu Kataoka

Takehiko Sakai

Katsuhiko Morishita

Chikanori Tsukamura

Tsuyoshi Okazaki

Kazunori Morimoto

Takuya Watanabe

Tetsuo Fujita

Shogo Nishiwaki

Takayuki Hayano

Takahiro Sasaki

Masaharu Akitomo

Yuuki Mochizuki

A liquid crystal display device which can suppress generation of a locally luminous part where a dark line disappears. The display device includes: a pair of substrates, a liquid crystal layer sandwiched between the pair of substrates, wherein one of the pair of substrates includes a pair of electrodes in pixel. At least one of the electrodes may include a comb-tooth portion. A first comb-tooth portion of one of the pair of electrodes and a second comb-tooth portion of the other one of the pair of electrodes may be disposed to face each other. The distance between the pair of electrodes in a transverse direction of the comb-tooth portions of the pair of electrodes is at most 10 &#x3bc;m in example embodiments, and a rotational viscosity of the p-type nematic liquid crystals may be at least 130 mPa&#xb7;s.

Liquid crystal display device

A liquid crystal display device includes an active matrix substrate () including a plurality of first touch panel interconnects () extending in parallel with each other, a counter substrate () facing the active matrix substrate () and including a plurality of second touch panel interconnects () extending in parallel with each other in a direction intersecting the first touch panel interconnects (), a liquid crystal layer () provided between the active matrix substrate () and the counter substrate () with an alignment film () being interposed between the liquid crystal layer () and each of the active matrix substrate () and the counter substrate (), and a plurality of columnar touch pins (P) connected to the first or second touch panel interconnects (). Repellency to the alignment films () is imparted to at least a portion of a top portion of each of the touch pins (P).

Liquid crystal display device, touch panel, and display device including the same

A touch electrode and a detection element are positioned in at least two of pixels. The touch electrode is formed in a first substrate, and is positioned so as to face a counter electrode. The touch electrode contacts the counter electrode and is electrically connected thereto when a second substrate is pressed and bent toward the first substrate. The detection element is connected to the touch electrode, and detects the electrical connection between the touch electrode and the counter electrode.

Display device

A device includes: an active matrix substrate () including a plurality of first display lines () extending parallel to each other and a plurality of second display lines extending parallel to each other in a direction crossing the first display lines (); and a counter substrate () including a black matrix (B) provided so as to overlap the first display lines () and the second display lines, wherein the active matrix substrate () includes a plurality of touch panel lines () extending parallel to each other in a direction in which the first display lines () extend, and portions of the black matrix (B) overlapping the second display lines are electrically conductive and are configured so as to come into contact with the touch panel lines () when the surface of the active matrix substrate () or the counter substrate () is pressed.

It is an object to provide a display that can reliably shield visible light in the entire wavelength regions when viewed from an oblique direction and a viewing angle control element used for the display. A viewing angle control liquid crystal panel () is comprised of a liquid crystal cell () and an emission-side polarizing plate (). When light having a part of wavelength components (R,G) in the visible wavelength regions enters at least at a predetermined angle, the liquid crystal cell () provides the incident light with a phase difference so as to function as a first light-shielding layer that shields the light of the R and G components not to pass through the emission-side polarizing plate (). A retardation plate () and a polarizing plate () function as auxiliary light-shielding layers, more specifically, when the light that has passed through the first light-shielding layer enters at least at the predetermined angle, the retardation plate () provides the light with a phase difference so that at least light having a wavelength component (B) is shielded and thus not transmitted by the polarizing plate ().

Display and viewing angle control element used for same

There are provided a viewing angle control device that can provide a pure black display without coloring and have a significantly improved shielding ability in the narrow viewing angle state, and a display using the viewing angle control device. To adjust the VT (voltage-transmittance) characteristics of a viewing angle control liquid crystal panel () that switches a viewing angle between a wide viewing angle state and a narrow viewing angle state by using birefringence of liquid crystal, translucent electrode films (), to which alternating-current voltages with different frequencies are applied, are provided on a portion of at least one of a pair of translucent substrates () sandwiching the liquid crystal, the portion corresponding to at least one color of a picture element of a display liquid crystal panel (), so that the voltage-transmittance characteristics of the liquid crystal are adjusted.

Viewing angle control device and display provided with the same

A negative C plate () is arranged to be between a polarizing plate () and a reflective liquid crystal panel (). A retardation of the negative C plate () is set so that a combination of the negative C plate () and the liquid crystal panel () generates a phase difference of 'n&#x3bb;/4+&#x3bb;/8 (n is 0, or a positive or negative integer)' for a one-way light path with respect to linearly-polarized light entering into the liquid crystal display device. This makes it possible to provide, at low cost, a liquid crystal display device whose viewing angle can be narrowed by arbitrarily setting a direction in which visibility is limited.

A viewing angle controlling liquid crystal panel in which uniformity of a shielding effect in a screen is further improved is provided. Linearly polarized light enters a liquid crystal layer. Further, the liquid crystal layer is provided, on a light exit side of the liquid crystal layer, with a polarizing plate transmitting only a component of light having exited from the liquid crystal layer which component is parallel to a polarization axis of the linearly polarized light having entered the liquid crystal layer. Liquid crystal molecules contained in the liquid crystal layer are tilted in a direction parallel to or perpendicular to the polarization axis of the linearly polarized light having entered the liquid crystal layer. In addition, an electrode () is provided so that two or more different voltages can be applied to the liquid crystal layer simultaneously.

Viewing angle controlling liquid crystal panel and display device

A liquid crystal display device is provided with high fabrication efficiency, which produces small display unevenness and which is capable of high quality display with excellent viewing angle characteristics and high transmittance. A liquid crystal display device of the present invention includes: a first substrate which includes pixel electrodes and an alignment film; a second substrate which includes a common electrode; and a liquid crystal layer interposed between the first substrate and the second substrate. Each of the pixel electrodes includes a plurality of subpixel electrodes electrically separated from one another on an insulating layer. The subpixel electrodes have a recess recessed toward the insulating layer. The subpixel electrodes and a drain line are connected at the recess. Part of the common electrode lying above a whole area of the pixel electrodes is substantially flat.

There are provided a display that can block light so that a display on an image display device is invisible from a wide range of view angles in an oblique direction, and a view angle control element employed therein. In a narrow view angle state, a view angle control liquid crystal panel () prevents light in a predetermined wavelength region that has been incident at a polar angle of &#x3c6;or more from being transmitted through a polarizing plate () by using a phase difference imparted by a liquid crystal cell (). In the narrow view angle state, a view angle control liquid crystal panel () prevents light that has been incident at a polar angle of &#x3c6;or more, among light that has been transmitted through the polarizing plate (), from being transmitted through a polarizing plate () by using a phase difference imparted by a liquid crystal cell (). Consequently, light forming a polar angle of &#x3c6;or more is blocked as a whole, which allows the narrow view angle state to cover a wide range.

Display and view angle control element employed therein

There are provided a viewing angle control device that can provide a black display without coloring and achieve a significantly improved shielding ability during a narrow viewing angle state, and a display using the same. In order to adjust VT (voltage-transmittance) characteristics of a viewing angle control liquid crystal panel () that switches a viewing angle between a wide viewing angle state and a narrow viewing angle state by using birefringence of liquid crystal, the viewing angle control liquid crystal panel () includes a translucent dielectric film () for adjusting the voltage-transmittance characteristics of the liquid crystal at a position corresponding to a picture element of at least one color in a display liquid crystal panel () on at least one of a pair of translucent substrates () that sandwich the liquid crystal therebetween.

The present invention provides a color filter substrate which can suppress a reverse tilt domain from being generated in a liquid crystal layer near a boundary between a colored layer and a bank without forming a flattening layer on the colored layer. The color filter substrate of the present invention is a color filter substrate including a substrate, an insulating film having transparency, a bank, and a colored layer, the insulating film being arranged on the substrate, the bank and the colored layer being arranged on the insulating film, the colored layer being surrounded by the bank, wherein a thickness of the insulating film in a region overlapping with the center of the colored layer is smaller than a thickness of the insulating film in a region overlapping with an edge of the colored part.

Color filter substrate and liquid crystal display device

In a liquid crystal display device including a display liquid crystal panel and a viewing-angle-control liquid crystal panel and capable of switching viewing angle characteristics, a half wavelength plate for setting a viewing restricted direction is provided between the display liquid crystal panel and the viewing-angle-control liquid crystal panel. This makes it possible to realize a liquid crystal display device that allows a viewing restricted direction to be set as appropriate.

Liquid crystal display device and viewing angle control module

The present invention provides a liquid crystal display device having a color-filter on array structure, which can improve an aperture ratio and reduce connection defects. The present invention is a liquid crystal display device including the first substrate, the second substrate, and a liquid crystal layer interposed between the first and second substrates, the first substrate having a structure in which a lower conductive part, a color filter layer, an upper conductive part are stacked in this order on an insulating substrate, wherein the color filter layer includes a colored part and a partition for partitioning the colored part, the partition is formed in such a way that a plurality of openings and a coupling opening are formed, the colored part being arranged in the plurality of openings, the coupling opening linearly coupling the plurality of openings with each other, and the upper conductive part is connected to the lower conductive part through a contact hole, the contact hole being formed in a region overlapping with the coupling opening.

Liquid crystal display device having particular color-filter on array structure

A display system includes a liquid crystal display () including a backlight (), a liquid crystal display panel (), and a viewing angle control panel () for controlling the viewing angle of the display panel (), the display system causing the amount of external light reflected by the liquid crystal display () to be relatively larger than the amount of light leaked from the backlight () onto the liquid crystal display panel (). This provides a display system having an enhanced blocking effect.

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Osaka, Japan

Dai Chiba