Sony Corporation

Mikiya Kobayashi

Kikuo Kaise

Shizuo Nishihara

Toshihiro Fukuda

Tetsuro Ochi

Hisao Kitai

The present invention is a liquid crystal projector device using a liquid crystal panel. The device mounts a liquid crystal panel () on a light incident plane of a polyhedral dichroic prism () in a bonded state so as to integrate the panel with the prism, and comprises a heat sink () and a heat pipe () which forcedly cools the integrated structure statically. The liquid crystal projector device comprising the structure describe above cools the liquid crystal panel efficiently without bringing any trouble caused by fan noise or raise of dust.

Liquid crystal display device and liquid crystal projector device

Electrostatic breakdown is avoided during fabrication of individual semiconductor devices using a semiconductor aggregate substrate. The semiconductor aggregate substrate is comprised of a large wafer. A plurality of sections are provided on the surface of the wafer, which are divided by division lines. A display active matrix circuit is integrally formed in each of the segments through normal IC production processing. Guard ring patterns are provided so that they surround the individual display active matrix circuits. A connection pattern is also provided for commonly connecting the guard ring patterns adjoining each other through the division lines. The connection pattern has opening structures for dealing with an external overcurrent on both sides of the division lines. The opening structures are constituted by, for example fuse patterns.

Semiconductor aggregate substrate and semiconductor device with fuse

A liquid crystal projector has a pre-sheet polarizer and an incoming light side sheet polarizer on the incoming light side of a liquid crystal panel. Two sheet polarizers superimposed to each other are stuck on the outgoing light side face of the liquid crystal panel. The degree of polarization of the pre-sheet polarizer is smaller than that of the incoming light side sheet polarizer, so that both the sheet polarizers suitably share the quantity of absorbed light. Similarly, the degree of polarization of the incoming light side one of the sheet polarizers stuck on the outgoing light side face of the liquid crystal panel is smaller than that of the other one, so that both the sheet polarizers suitably share the quantity of absorbed light. With this configuration, the durability of the sheet polarizer is improved and the light output is increased.

Projection LCD having a sheet polarizer with protective layers on both

A projection type liquid crystal display according to the present invention comprises a dichroic prism for separating or synchronizing a light to provide fundamental colors for color display, and a unit for enlarging and projecting a transmitted light from the liquid panel. The liquid panel has one surface fixedly attached to a transparent member and the other surface integral with the dichroic prism directly or through at least one optical component. In the projection type liquid crystal display, the light which provides fundamental colors for color display and is separated or synchronized at the dichroic prism is incident on the light incidence surface of the liquid panel through the transparent member or the dichroic prism without contacting with the air in the space. The light incident on the liquid crystal panel is irradiated from the light outgoing surface of the liquid crystal panel through the transparent member or the dichroic prism without contacting with the air in the space and thereafter enlarged and projected. With this arrangement, it is possible to simplify the structure of the peripheral optical systems of the liquid crystal panel and to improve image quality.

Projection type liquid crystal display having a dichroic prism and

According to a liquid crystal panel of the present invention, the focal length of micro-lenses is set to be longer than the distance between the micro-lens array and the first substrate, while light collected by each micro-lens is arranged to focus inside the first substrate. Thus, the divergence angle after focusing can be reduced. Therefore, the maximum light-emerging angle from the LCD panel can be reduced, and eclipse of the light which causes chrominance or luminance non-uniformity does not occur even when a lens having a high F number is used as a projection lens.

Liquid crystal panel having micro-lens array with extended focal length

A transmission-type display device including: a first transparent substrate having pixel electrodes and switching elements formed thereon, each of the pixel electrodes being connected to the respective switching element; a second transparent substrate having a counter electrode formed thereon and being positioned opposite to the first transparent substrate in such a manner as to leave a gap therebetween; a liquid crystal layer held in the gap between the first transparent substrate and the second transparent substrate; and a heat-dissipating glass plate of a thermal conductivity of 1 W/m.multidot.K or more and a thickness of 1 mm or more arranged at the outer surface of at least the first transparent substrate constructed in such a manner that picture quality does not deteriorate even if dust becomes attached to the liquid crystal panel or lens. Instead, the heat-dissipating glass plate can be bonded to the outer surface of the first transparent substrate in such a manner as to leave a gap of width of 2 mm or less between the heat-dissipating glass plate and the first transparent substrate.

Growing community of inventors

Kanagawa, Japan

Mikiya Kobayashi