Abstract: 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 (2) 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 (2) includes a translucent dielectric film (206g, 206r) 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 (1) on at least one of a pair of translucent substrates (201, 202) that sandwich the liquid crystal therebetween.

Abstract: 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.

Abstract: A liquid crystal display device includes an active matrix substrate (20a) including a plurality of first touch panel interconnects (19b) extending in parallel with each other, a counter substrate (30a) facing the active matrix substrate (20a) and including a plurality of second touch panel interconnects (25a) extending in parallel with each other in a direction intersecting the first touch panel interconnects (19b), a liquid crystal layer (40) provided between the active matrix substrate (20a) and the counter substrate (30a) with an alignment film (9a, 9b) being interposed between the liquid crystal layer (40) and each of the active matrix substrate (20a) and the counter substrate (30a), and a plurality of columnar touch pins (P) connected to the first or second touch panel interconnects (19b, 25a). Repellency to the alignment films (9a, 9b) is imparted to at least a portion of a top portion of each of the touch pins (P).

Abstract: A liquid crystal display device includes an active matrix substrate (20a) including a plurality of first touch panel interconnects (19b) extending in parallel with each other, a counter substrate (30a) facing the active matrix substrate (20a) and including a plurality of second touch panel interconnects (25a) extending in parallel with each other in a direction intersecting the first touch panel interconnects (19b), and a liquid crystal layer (40) provided between the active matrix substrate (20a) and the counter substrate (30a) with an alignment film (9a, 9b) being interposed between the liquid crystal layer (40) and each of the active matrix substrate (20a) and the counter substrate (30a). The first touch panel interconnects (19b) each have a plurality of first touch pins (Pa) having a columnar shape in regions where the first touch panel interconnects (19b) intersect the second touch panel interconnects (25a).

Abstract: A liquid crystal display panel (50a) including: an active matrix substrate (20a) including a plurality of light-reflecting lines (11), an insulating film (16) provided so as to cover the lines (11), and a plurality of pixel electrodes (19) provided in a matrix pattern on the insulating film (16); a counter substrate (30a) placed opposing the active matrix substrate (20a) and including a plurality of colored layers (22) provided in a matrix pattern so as to respectively overlap the pixel electrodes (19), and a black matrix (21a) provided between the colored layers (22); and a liquid crystal layer (40) provided between the active matrix substrate (20a) and the counter substrate (30a), wherein at least one of the black matrix (21a) and the lines (11) has a raised/recessed portion (C) whose surface is formed in a raised/recessed shape.

Abstract: A display system includes a liquid crystal display (10) including a backlight (3), a liquid crystal display panel (1), and a viewing angle control panel (2) for controlling the viewing angle of the display panel (1), the display system causing the amount of external light reflected by the liquid crystal display (10) to be relatively larger than the amount of light leaked from the backlight (3) onto the liquid crystal display panel (1). This provides a display system having an enhanced blocking effect.

Abstract: The present invention provides a substrate for a display device and a liquid crystal display device, which are capable of preventing a reflective layer from being damaged in a resist separation step for patterning the reflective layer. The present invention is a substrate for a display device provided with a reflective layer in a display region, comprising: a pattern film that is disposed outside the display region except a terminal region and on the same side as a side of the reflective layer, the pattern film including either one of a material that has the same ionizability as a material of the reflective layer and a material that has higher ionizability than the material of the reflective layer.

Abstract: A device includes: an active matrix substrate (20a) including a plurality of first display lines (11a) 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 (11a); and a counter substrate (30a) including a black matrix (B) provided so as to overlap the first display lines (11a) and the second display lines, wherein the active matrix substrate (20a) includes a plurality of touch panel lines (11b) extending parallel to each other in a direction in which the first display lines (11a) 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 (11b) when the surface of the active matrix substrate (20a) or the counter substrate (30a) is pressed.

Abstract: A liquid crystal display includes a backlight (3), a liquid crystal display panel (1), and a viewing angle control panel (2) for controlling the viewing angle of the display panel (1), the liquid crystal display further including a lens sheet (41) provided between the backlight (3) and the liquid crystal display panel (1). This provides a display device system which is capable of providing better blocking.

Abstract: 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.

Abstract: A liquid crystal display device includes a reflective liquid crystal panel (20) having a liquid crystal panel polarization plate (22), a polarization plate (32) provided on a front surface side of the polarization plate (22) with its absorption axis in parallel with an absorption axis of the polarization plate (22), and a negative C plate (31) provided between the liquid crystal panel polarization plate (22) and the polarization plate (32). The negative C plate (31) sets a direction in which viewing limitation is carried out. Thus, it is possible to provide the liquid crystal display device in which a viewing angle can be narrowed by freely setting, in the reflective liquid crystal panel, the direction in which the viewing limitation should be carried out.

Abstract: A negative C plate (31) is arranged to be between a polarizing plate (32) and a reflective liquid crystal panel (20). A retardation of the negative C plate (31) is set so that a combination of the negative C plate (31) and the liquid crystal panel (20) generates a phase difference of “n?/4+?/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.

Abstract: A liquid crystal display device (10) of the present invention includes a backlight (3), a display liquid crystal panel (1) and a viewing angle control panel (2) for switching a viewing angle of the display liquid crystal panel (1) between a wide viewing angle mode and a narrow viewing angle mode. The viewing angle control panel (2) includes a control panel upper polarizing plate (22), a liquid crystal cell (21) and a control panel lower polarizing plate (23) stacked in this order, and phase difference plates (24, 25) are provided between the polarizing plates (22, 23) and the liquid crystal cell (21), respectively. The viewing angle control panel (2) is arranged such that Re1 in a white display portion in the wide viewing angle mode is n?/2 (n is an integer of 1 or more), Re2 in a white display portion in the narrow viewing angle mode is n?/2 (n is an integer of 1 or more), and Re3 in a black display portion in the narrow viewing angle mode is n? (n is an integer of 1 or more).

Abstract: 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 (2) is comprised of a liquid crystal cell (21) and an emission-side polarizing plate (22). 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 (21) 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 (22).

Abstract: 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 (2) prevents light in a predetermined wavelength region that has been incident at a polar angle of ?H or more from being transmitted through a polarizing plate (22) by using a phase difference imparted by a liquid crystal cell (21). In the narrow view angle state, a view angle control liquid crystal panel (3) prevents light that has been incident at a polar angle of ?L or more, among light that has been transmitted through the polarizing plate (22), from being transmitted through a polarizing plate (32) by using a phase difference imparted by a liquid crystal cell (31). Consequently, light forming a polar angle of ?L or more is blocked as a whole, which allows the narrow view angle state to cover a wide range.

Abstract: An object is to provide a modified xanthan gum, a modified gum arabic, and a modified tamarind seed gum produced by crosslinking a naturally occurring polysaccharide such as xanthan gum, gum arabic, or tamarind seed gum, by irradiating them with radiation, and methods for crosslinking xanthan gum, gum arabic, and tamarind seed gum. In one aspect, the invention is a modified xanthan gum produced by crosslinking xanthan gum by irradiating a solution containing 10 to 70% by weight of xanthan gum with 5 to 200 kGy of radiation. In another aspect, the invention is a modified gum arabic produced by crosslinking gum arabic by irradiating a solution containing 10 to 50% by weight of gum arabic with 5 to 200 kGy of radiation. In another aspect, the invention is a modified tamarind seed gum produced by crosslinking tamarind seed gum by irradiating a solution containing 10 to 50% by weight of tamarind seed gum with 5 to 50 kGy of radiation.

Abstract: A composite retardation plate for use in a Twisted Nematic liquid crystal display device, at least includes: a first retardation film; and a second retardation film stacked on the first retardation film, the first retardation film being such that the first retardation film has a refractive index anisotropy which varies in thickness of the first retardation film so as to compensate for sequential variations in refractive index anisotropy of a liquid crystal layer included in the Twisted Nematic liquid crystal display device, the sequential variations being caused by a region which is approximately regarded as a region in which liquid crystal molecules hybridly orient during voltage application, and the second retardation film having a refractive index anisotropy for compensating for a residual refractive index anisotropy which remains after the compensation performed by the first retardation film.

Abstract: A liquid crystal display device (10) of the present invention includes a backlight (3), a display liquid crystal panel (1) and a viewing angle control panel (2) for switching a viewing angle of the display liquid crystal panel (1) between a wide viewing angle mode and a narrow viewing angle mode. The viewing angle control panel (2) includes a control panel upper polarizing plate (22), a liquid crystal cell (21) and a control panel lower polarizing plate (23) stacked in this order, and phase difference plates (24, 25) are provided between the polarizing plates (22, 23) and the liquid crystal cell (21), respectively. The viewing angle control panel (2) is arranged such that Re1 in a white display portion in the wide viewing angle mode is n?/2 (n is an integer of 1 or more), Re2 in a white display portion in the narrow viewing angle mode is n?/2 (n is an integer of 1 or more), and Re3 in a black display portion in the narrow viewing angle mode is n? (n is an integer of 1 or more).

Abstract: A liquid crystal display device includes a reflective liquid crystal panel (20) having a liquid crystal panel polarization plate (22), a polarization plate (32) provided on a front surface side of the polarization plate (22) with its absorption axis in parallel with an absorption axis of the polarization plate (22), and a negative C plate (31) provided between the liquid crystal panel polarization plate (22) and the polarization plate (32). The negative C plate (31) sets a direction in which viewing limitation is carried out. Thus, it is possible to provide the liquid crystal display device in which a viewing angle can be narrowed by freely setting, in the reflective liquid crystal panel, the direction in which the viewing limitation should be carried out.

Abstract: 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 (2) 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 (205r, 205g, 206b), 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 (201, 202) sandwiching the liquid crystal, the portion corresponding to at least one color of a picture element of a display liquid crystal panel (1), so that the voltage-transmittance characteristics of the liquid crystal are adjusted.