Toshiba Matsushita Display Technology Co., Ltd.

Kabushiki Kaisha Toshiba

Takayoshi Tsukamoto

Tomohiro Matsumoto

Shin Kawachi

Mitsutake Ikeda

A liquid crystal display device comprising a liquid crystal display panelhaving pixels each disposed on an intersection between plural scan lines and plural signal lines, a flexible wiring substrate having mounted thereon a drive ICelectrical connected to the liquid crystal display panelfor supplying video signals via video signal lines, to one video signal line of which N number of the signal lines are allocated, wherein N is an integer of two or more, an analog switch circuit switch-connected to a signal line selected from the N number of the signal lines in each of the video signal lines, and the control linesformed across a region in which the drive IChas been mounted on the flexible wiring substrateand drawn from a center of the flexible wiring substrateonto the liquid crystal display panelfor supplying at least a power source for driving the analog switch circuit or a control signal.

Liquid crystal display device

A flat display device includes a display panel, a frame which holds the display panel, and a frame-shaped bezel which is fixed to the frame and holds the display panel on the frame. The bezel has a surface portion, side face portion, reverse portion, fixed portion, and stress easing portion. The surface portion has an end side on the boundary with a display region of the display panel and covers a first main surface of the display panel with the display region exposed. The side face portion covers at least a part of a side face of the frame. The reverse portion extends covering at least a part of a reverse surface of the frame. The fixed portion is provided on the reverse portion and fixed to the frame. The stress easing portion is situated near a shortest path extending from the fixed portion of the bezel toward the end side and eases stress in a direction such that the surface portion and the display panel are separated from each other.

Flat display device including stress easing frame bezel

An area light source device includes a light source, a light guide including a first side surface on which emission light from the light source is incident, and a first major surface and a second major surface, which are opposed to each other and from which the incident light on the first side surface emerges, an optical sheet that is disposed on the second major surface side of the light guide and has a reflective surface on a side thereof that is opposed to the second major surface, and a film member that is disposed between the light guide and the optical sheet, has light transmissivity and has a projection-and-recess-shaped portion on a surface thereof.

Area light source device and liquid crystal display apparatus

A spring memberincludes side, upper and lower platesandand a cut-out portionon its upper platefor positioning. The upper and lower platesanddefine an opening. The spring memberreceives an assembling member or bezeland a rear light unitwith the cut-out portionengaged in an upper plateof the bezeland puts them together while a liquid crystal display panelis held between the bezeland the light unit. The upper plateof the bezelhas a stepfor positioning of the spring member. Due to elasticity of the upper and lower platesandof the spring member, the bezeland the light unitare compressively held with a constant distance defined between them by the spring member. An optical sheetcovers the liquid crystal display panel uniformly. Thus, undulation or crinkles of the sheethardly take place on the side of a cold cathode fluorescent lampuneven brightness and distortion of images can be substantially avoided and display dignity is substantially improved.

A flat-panel display device is provided, that does not allow deformation due to fastening forces of a male screw even despite a gap which is created by a dimensional tolerance or the like between a bezel disposed to a display cell and a housing. Female screws formed in a bezel are deformable in a direction toward an inner surface of the housing The fastening force of male screws which penetrates a side wall portion of the housing in which the display cell is housed and a side-surface portion of the bezel and which engages with the female screws formed in the bezel does not cause large deformation.

Growing community of inventors

Tokyo, Japan

Takayoshi Tsukamoto