Sony Corporation

Hiroyoshi Tsubota

Katsuhide Uchino

Yoshiharu Nakajima

Toshikazu Maekawa

Hiroaki Ichikawa

Yuji Hayashi

Fumiaki Abe

Masayuki Iida

Yumiko Tatemori

The problem to be solved is to suppress image quality degradation caused by polarizers and provide improved light fastness. To solve the above problem, the embodiment of the present invention is a liquid crystal display device. The liquid crystal display device includes a driving-side substrateon which a drive transistor, pixel electrodeand orientation film are formed. The liquid crystal display device further includes an opposed-side substrateon which an opposed electrode and orientation film are formed. The liquid crystal display device still further includes liquid crystalfilled between the pixel electrodeof the driving-side substrateand opposed electrode of the opposed-side substrate. The liquid crystal display device still further includes a reflective inorganic polarizerformed between the drive transistorand pixel electrodeof the driving-side substrate. The embodiment of the present invention is also a projection-type display device using the liquid crystal display device.

Liquid crystal display device and projection-type display device

A liquid crystal display device includes a liquid crystal display device, a vertical scanner, a horizontal scanner, a video driver, a timing generator, and termination means. The liquid crystal panel is provided with pixels arranged in a matrix. The vertical scanner operates in accordance with a first start-pulse signal, and sequentially selects each row of the pixels. The horizontal scanner operates in accordance with a second start-pulse signal, and sequentially writes a video signal to the selected row of the pixels by distributing the video signal to each column of the pixels. The video driver, which is activated in accordance with supply of power, supplies the video signal to the liquid crystal panel. The timing generator, which is activated in accordance with the supply of power, supplies the first start-pulse signal and the second start-pulse signal to the vertical scanner and the horizontal scanner, respectively. The termination circuit terminates at least either of the first start-pulse signal and the second start-pulse signal which are repeatedly inputted to the vertical scanner and the horizontal scanner until the video signal outputted from the video driver becomes stable when power is supplied.

Liquid crystal display device and a method for driving the same

The invention provide a display apparatus of a plural pixel simultaneous driving system wherein sample and hold noise included in a video signal is removed before the video signal is supplied to a display panel. A video signal processing circuit operates in response to a timing signal supplied from an external timing signal source, and delays an input video signal supplied thereto from an external video signal source to produce an output video signal. The video signal processing circuit includes a first sample and hold circuit, a second sample and hold circuit and a differential circuit. The first sample and hold circuit repetitively samples and holds the input video signal in response to the timing signal. The second sample and hold circuit repetitively samples and holds a predetermined reference signal in response to the same timing signal. The differential circuit differentially processes the input video signal after it has been sampled and held and the reference signal after it has been sampled and held to produce an output video signal from which sample and hold noise synchronized with the timing signal has been removed.

Display apparatus

A display apparatus comprises arrayed pixels, a vertical-scanning circuit, and a horizontal-scanning circuit. The vertical-scanning circuit outputs selection pulses one after another to sequentially scan pixels in one vertical-scanning period in units of lines. The horizontal-scanning circuit sends and writes a video signal into the pixel line selected by the sequential scanning in one horizontal-scanning period. The vertical-scanning circuit is provided with a switching section to control the consecutive outputs of the selection pulses and to adjust the number of pixel lines to be selected in one horizontal period according to the specification of the video signal used. This configuration enables both noninterlaced drive and interlaced drive.

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Kanagawa, Japan

Hiroyoshi Tsubota