Japan Display Inc.

Panasonic Liquid Crystal Display Co., Ltd.

Mika Oiwa

Shinichiro Oka

Shinichi Komura

Yukio Tanaka

Kenji Nakao

Kazuhiro Nishiyama

Daiichi Suzuki

Toshiharu Matsushima

Shintaro Takeda

Yasushi Tomioka

Yoshiro Mikami

Kotaro Araya

According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel and a controller, wherein a frame frequency falls within a range of 1 Hz to 10 Hz, an off-leak current of each of the TFTs has a value of 1&#xd7;10A or less, a resistivity of a liquid crystal and a resistivity of an alignment film both fall within one of a first range and a second range, the first range being 1&#xd7;10to 5&#xd7;10&#x3a9;&#xb7;cm, the second range being 5&#xd7;10to 5&#xd7;10&#x3a9;&#xb7;cm, and a relationship of 'R1&#xd7; C1&#x2248;R2&#xd7;C2' is satisfied, where R1 is a resistance and C1 is a capacity with respect to each pixel, R2 is a resistance and C2 is a capacity with respect to each pixel.

Liquid crystal display device

A pixel electrode formed into a slit structure with striped electrodes opposed to each other for a zero rubbing angle can provide fast response since rotational directions of the liquid crystals become opposite at both sides of the slit in the striped electrodes. The electrode structure, however, poses a problem of low transmittance. Provided is a liquid crystal display device of IPS-Pro scheme including a pixel electrode with one pair of striped electrodes. The first striped electrode includes a short electrode section and long electrode sections, and the second striped electrode also includes a short electrode section and long electrode sections. The long electrode sections of the first striped electrode are disposed adjacently to those of the second striped electrode. Liquid crystals are aligned in a lengthwise direction of the striped electrodes.

According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel and a controller, wherein a frame frequency falls within a range of 1 Hz to 10 Hz, an off-leak current of each of the TFTs has a value of 1&#xd7;10A or less, a resistivity of a liquid crystal and a resistivity of an alignment film both fall within one of a first range and a second range, the first range being 1&#xd7;10to 5&#xd7;10&#x3a9;&#xb7;cm, the second range being 5&#xd7;10to 5&#xd7;10&#x3a9;&#xb7;cm, and a relationship of 'R1&#xd7;C1&#x2248;R2&#xd7;C2' is satisfied, where Ris a resistance and Cis a capacity with respect to each pixel, Ris a resistance and Cis a capacity with respect to each pixel.

According to one embodiment, a lateral electric-field type of liquid crystal display device includes a display panel including a plurality of liquid crystal pixels arranged in a matrix, and a controller configured to perform intermittent driving to rewrite an image signal to the liquid crystal pixels, wherein a frame frequency falls within a range of 10 Hz to 20 Hz, and an absolute value of a flexo coefficient (e11, e33) of a liquid crystal applied to the liquid crystal pixels is 1.6 pC/m or less.

Liquid crystal display apparatus

To achieve a liquid crystal display device of a field sequential system with sufficient response speed and uniformity of viewing angle, the liquid crystal display device includes polarizing plates attached on front and back surfaces of a liquid crystal display panel, a backlight provided on the back surface of the liquid crystal display panel, and an anisotropic diffusion film provided on the front side of the liquid crystal display panel. The liquid crystal display panel and the backlight are driven by the field sequential system. The distribution of the contrast of the liquid crystal display panel varies depending on the azimuth direction. Then, the azimuth direction in which the contrast of the liquid crystal display panel is small is equal to the azimuth direction in which the emission intensity when parallel light is incident on the anisotropic diffusion film is strong, to achieve uniform contrast in all azimuth directions.

A liquid crystal display includes: a pair of substrates including at least one transparent substrate; a liquid crystal layer disposed between the pair of substrates; and an electrode group formed on at least one of the pair of substrates so as to apply an electric field to the liquid crystal layer. The liquid crystal layer contains at least one kind of liquid crystalline compound and at least one kind of chiral dopant. The concentration c of the chiral dopant is lower than a saturation solubility s thereof. The concentration c of the chiral dopant and a helical twisting power [HTP] of the chiral dopant satisfy a relation of [HTP]&#xb7;c&#x2267;5.5 (&#x3bc;m).

Liquid crystal display

Provided is a liquid crystal display device, including: a first substrate including a first electrode and a second electrode each including a plurality of linear electrodes and formed so as to be comb-like; a second substrate; a blue-phase liquid crystal layer; first drain lines and second drain lines extending in Y direction and provided side by side in X direction; gate lines extending in the X direction; a first thin film transistor for supplying a drain signal from one of the first drain lines to the first electrode; a second thin film transistor for supplying a drain signal from one of the second drain lines to the second electrode, which is plate-like and formed on the blue-phase liquid crystal layer side of the second substrate so as to cover at least a region in which pixels are formed.

Growing community of inventors

Tokyo, Japan

Mika Oiwa