Abstract: A touch panel-including illuminator having: a light pipe made of a transparent plate-like material having an upper surface, a lower surface and at least one incidence side surface, the upper surface being provided with light output means through which light incident on the incidence side surface is made to emerge from the lower surface; a light source disposed on the incidence side surface of the light pipe; an adhesive layer; and a touch panel bonded to the upper surface of the light pipe through the adhesive layer; wherein the light output means are constituted by fine grooves which are disposed discontinuously, each of which is made of a concave portion, and each of which is shaped like an approximate triangle in section; and wherein each of the fine grooves has an optical path changing slope and a steep slope.

Abstract: A lightweight, touch-input-type reflective liquid-crystal display panel having a reflective liquid-crystal display panel. The reflective liquid-crystal display panel being formed in a manner such that external light incident on an outer surface is reflected by the light-reflecting layer so that display light transmitted through the liquid-crystal layer is made to emerge from the visual side cell substrate and viewed.

Abstract: A pressure-sensitive adhesive composition is described, which comprises a polyester having an improved molecular structure and can find wide applications, which polyester has both a good mechanical strength and a good flexibility, is obtained from starting material components essentially comprising an aliphatic diol having a carbonate structure in the main chain thereof, and at least one of a polyhydric alcohol having three or more hydroxyl groups and a polycarboxylic acid having three or more carboxyl groups, and has a number average molecular weight of 5,000 or more and a degree of dispersion of 2.2 or more.

Abstract: An acrylic pressure-sensitive adhesive which gives a pressure-sensitive adhesive layer having a regulate refractive index, in particular, an increased refractive index, and retaining almost intact satisfactory pressure-sensitive adhesive properties. The pressure-sensitive adhesive comprises an acrylic copolymer comprising, as copolymerizable components, an acrylic alkyl ester containing no aromatic ring and a monomer containing an aromatic ring, copolymerization proportion of the monomer containing an aromatic ring in the copolymer being from 40 to 90% by weight based on the weight of all monomer components.

Abstract: A reflective liquid-crystal display device having a reflective liquid-crystal display panel, at least one light source, an optical path control layer, a transparent touch panel, and a transparent adhesive layer, the reflective liquid-crystal display panel including a liquid-crystal cell and a light-reflecting layer, the liquid-crystal cell having a back side cell substrate, a visual side cell substrate, and a layer of liquid crystal between the two cell substrates, the reflective liquid-crystal display panel being formed in a manner such that external light incident on an outer surface is reflected by the light-reflecting layer so that display light transmitted through the liquid-crystal layer is made to emerge from the visual side cell substrate and viewed, the light source being disposed on at least one of side surfaces of the reflective liquid-crystal display panel, the optical path control layer being disposed on the outer surface side of the visual side cell substrate, the transparent touch panel being b

Abstract: A touch panel-including illuminator having: a light pipe made of a transparent plate-like material having an upper surface, a lower surface and at least one incidence side surface, the upper surface being provided with light output means through which light incident on the incidence side surface is made to emerge from the lower surface; a light source disposed on the incidence side surface of the light pipe; an adhesive layer; and a touch panel bonded to the upper surface of the light pipe through the adhesive layer; wherein the light output means are constituted by fine grooves which are disposed discontinuously, each of which is made of a concave portion, and each of which is shaped like an approximate triangle in section; and wherein each of the fine grooves has an optical path changing slope and a steep slope.

Abstract: A pressure-sensitive adhesive composition is described, which comprises a polyester having an improved molecular structure and can find wide applications, which polyester has both a good mechanical strength and a good flexibility, is obtained from starting material components essentially comprising an aliphatic diol having a carbonate structure in the main chain thereof, and at least one of a polyhydric alcohol having three or more hydroxyl groups and a polycarboxylic acid having three or more carboxyl groups, and has a number average molecular weight of 5,000 or more and a degree of dispersion of 2.2 or more.