Sharp Kabushiki Kaisha Corporation

Fujitsu Corporation

Fujitsu Display Technologies Corporation

Au Optronics Corporation

Tottori University

Takahiro Sasaki

Yoshio Koike

Arihiro Takeda

Hidefumi Yoshida

Kazutaka Hanaoka

Shingo Kataoka

Hideo Chida

Katsufumi Ohmuro

Hideaki Tsuda

Kunihiro Tashiro

Seiji Tanuma

Kimiaki Nakamura

Yohei Nakanishi

Takatoshi Mayama

Yuichi Inoue

Takashi Sasabayashi

Yasutoshi Tasaka

Tetsuya Fujikawa

Hiroyasu Inoue

Tsuyoshi Kamada

Kouji Tsukao

Tomonori Tanose

Kenji Okamoto

Yoji Taniguchi

Kazuya Ueda

Manabu Sawasaki

Shougo Hayashi

Yoshinori Tanaka

Satoshi Murata

Hideaki Takizawa

Masahiro Ikeda

Minoru Otani

Keiji Imoto

Hisashi Yamaguchi

Makoto Ohashi

Tsutomu Seino

Makoto Tachibanaki

Tadashi Hasegawa

Atuyuki Hoshino

Noriaki Furukawa

Makoto Morishige

Takeshi Kinjou

Siro Hirota

Takashi Takagi

Iori Aoyama

Yuichi Kita

Norio Sugiura

Masakazu Shibasaki

Seiji Doi

Jin Hirosawa

Takashi Satoh

Kengo Kanii

Shota Makimoto

Isao Tsushima

Keiichi Ina

Yasuhiro Ohno

Ming Ni

Shuji Nishi

Yoshiki Nakatani

Toshihiro Matsumoto

Masahiro Yoshida

Katsunori Misaki

Naoki Ueda

Hidekazu Miyata

Seiichi Uchida

Yoshiharu Kataoka

Tsuyoshi Okazaki

Kuniaki Okada

Hiroyuki Hakoi

Katsuhiko Morishita

Dai Chiba

Naoto Kondo

Takehiko Sakai

Chikanori Tsukamura

Kentaro Kinoshita

Akira Komorita

Mikio Oshiro

Takuya Yoshimi

Takayuki Hayano

Kazuhiko Sumi

Yasunao Iwata

Kenko Honda

Yukiko Toyooka

Satoru Kishida

Junichi Hashimoto

A liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, and a plurality of pixels. Each of the pixels has a reflection region for performing display in a reflective mode. The first substrate includes a pixel electrode provided in each of the pixels and a reflection layer positioned opposite to the liquid crystal layer with respect to the pixel electrode. The reflection layer has a first region positioned in each of the pixels and a second region positioned between any two pixels adjacent to each other. Voltages of an identical polarity are applied to the liquid crystal layer for any two pixels adjacent to each other in a row direction, for any two pixels adjacent to each other in a column direction, or for all the pixels.

Liquid crystal display device

A liquid crystal display device includes a first substrate, a second substrate, a vertical alignment liquid crystal layer, and a plurality of pixels. Each of the pixels includes a reflective region for performing display in a reflection mode. The first substrate includes a reflective electrode including a first region located within each of the plurality of pixels and a second region located between any two pixels, of the plurality of pixels, adjacent to each other, a transparent insulating layer provided to cover the reflective electrode, and a pixel electrode formed from a transparent conductive material and provided on the transparent insulating layer in each of the plurality of pixels. The second substrate includes a counter electrode provided to be opposite to the pixel electrode and the reflective electrode. Voltage of the same polarity is applied to the liquid crystal layer of any two pixels, of the plurality of pixels, adjacent to each other along a row direction, any two pixels, of the plurality of pixels, adjacent to each other along a column direction, or all of the plurality of pixels. The counter electrode and the reflective electrode are provided with potentials different from each other.

A liquid crystal display panel includes pixels including a reflective region for display in a reflection mode and a transmissive region for display in a transmission mode. The liquid crystal display panel includes a liquid crystal layer including a nematic liquid crystal material having negative dielectric anisotropy and a chiral agent, a pixel electrode including a reflective conductive layer and a transparent conductive layer, a counter electrode, a light diffusing structure provided in common to the reflective region and the transmissive region, and a first vertical alignment film provided between the pixel electrode and the liquid crystal layer, and a second vertical alignment film provided between the counter electrode and the liquid crystal layer. At least one of the first vertical alignment film and the second vertical alignment film has an alignment regulating force defining a pretilt azimuthal direction, and in a case where the thickness of the liquid crystal layer in the reflective region is dr, and the thickness of the liquid crystal layer in the transmissive region is dt, dr and dt are in a range of 0.85&#x2264;dt/dr&#x2264;1.25.

Liquid crystal display panel

A liquid crystal display device includes a first substrate, a second substrate, a vertical alignment liquid crystal layer, and a plurality of pixels. Each of the pixels includes a reflective region for performing display in a reflection mode. The first substrate includes a reflective electrode including a first region located within each of the plurality of pixels and a second region located between any two pixels, of the plurality of pixels, adjacent to each other, a transparent insulating layer provided to cover the reflective electrode, and a pixel electrode formed from a transparent conductive material and provided on the transparent insulating layer in each of the plurality of pixels. The second substrate includes a counter electrode. Voltage of the same polarity is applied to the liquid crystal layer of any two pixels, of the plurality of pixels, adjacent to each other along a row direction, any two pixels, of the plurality of pixels, adjacent to each other along a column direction, or all of the plurality of pixels. A time average of voltage applied between the pixel electrode and the reflective electrode is substantially the same between a maximum gray scale display state and a minimum gray scale display state.

Liquid crystal display device wherein a time average of voltage applied between a pixel electrode and a reflective electrode is substantially the same in a maximum and minimum gray scale display state

Each pixel has a reflection region to produce a display in reflection mode. The first substrate includes: a pixel electrode for each pixel; and a first vertical alignment film. The second substrate includes: an opposite electrode opposite the pixel electrodes; and a second vertical alignment film. Of the first and second vertical alignment films, only the second vertical alignment film exerts an alignment-regulating force that determines a pretilt angle. Each pixel electrode includes a plurality of subpixel electrodes. The opposite electrode has an opening in an area corresponding to one of four corners of at least one of the plurality of subpixel electrodes. Liquid crystal molecules in a thickness-wise middle portion of the liquid crystal layer on the subpixel electrode are oriented toward the opening.

A liquid crystal display device is manufactured at a low cost. In the liquid crystal display device, three sub-pixel electrodes are connected by inter-electrode connection portions to form one pixel electrode. One TFT is connected to the pixel electrode. A screen of a liquid crystal display panel is divided into n (n&#x2265;2) of areas. Gate signal lines G of each divided area are scanned simultaneously one line at a time in each divided area. A backlight device emits light after completion of the scanning of each divided area.

Liquid crystal display device with time-division driving

In a liquid crystal display device (), each pixel row group is selected by a common scan signal voltage, each pixel row group including N pixel rows which adjoin one another in a column direction. Where two pixel rows which adjoin each other in a column direction and which are included in different pixel row groups are a first pixel row and a second pixel row, the first pixel row includes a pixel which has a pixel electrode () capacitively coupled with a gate bus line () which is associated with the second pixel row. When the first pixel row is included in the qgroup, the second pixel row is included in the (q+1)group. A scan signal voltage supplied to gate bus lines which are associated with the (q+1)group switches from low to high before a scan signal voltage supplied to gate bus lines which are associated with the qgroup switches from high to low.

Liquid crystal display device and driving method therefor

An array boardincludes a gate line, a TFT, a pixel electrode, a display pixel PX, and a second interlayer insulation film. The TFTincludes a gate electrodeformed from a part of the gate line, a channel sectionformed from an oxide semiconductor film, a source sectionconnected to one end of the channel section, and a drain sectionconnected to another end of the channel sectionand formed from the oxide semiconductor filmhaving resistance lower than the channel section. The pixel electrodeis connected to the drain section. The display pixel PX includes the TFTand the pixel electrode. The second interlayer insulation filmhas a second hole in a position overlapping the pixel electrode and the drain sectionand not overlapping the gate electrode

Thin film transistor substrate and display panel

A liquid crystal display apparatus includes a liquid crystal display panel including a first substrate, a second substrate, and a liquid crystal layer and a plurality of pixels. The first substrate includes a first electrode provided in each of the pixels and a first horizontal alignment film that determines a pretilt orientation of a liquid crystal molecule. The second substrate includes a second electrode provided to face the first electrode and a second horizontal alignment film that determines the pretilt orientation of the liquid crystal molecule. Each of the first and second horizontal alignment films is a photoalignment film. At least one of the first substrate and the second substrate includes an anchoring structure in each of the pixels. The liquid crystal display panel further includes an alignment sustaining layer which is formed on the surface of each of the first and second horizontal alignment films on the liquid crystal layer side, is configured with a photopolymer, and imparts a pretilt angle greater than 0&#xb0; to the liquid crystal molecules.

Liquid crystal display apparatus and manufacturing method of liquid crystal display apparatus

A liquid crystal display device includes sub-pixel electrodes respectively provided to three sub-pixels, and an interelectrode connection portion that connects sub-pixel electrodes adjacent to each other among the sub-pixel electrodes. The interelectrode connection portion is provided in a position where boundaries of liquid crystal alignment directions of sub-pixels adjacent to each other are connected.

A liquid crystal display device performs displaying by field sequential driving. The liquid crystal display device includes a plurality of scanning lines; and a plurality of signal lines including a plurality of pairs of signal lines, each pair of signal line being connected to one pixel column. Under field sequential driving, within one field period of emitting any of a plurality of color rays, there is an overlap between: a first period in which a first scanning line group included among the plurality of scanning lines are scanned and one of the pair of signal lines is used to perform signal writes; and a second period in which a second scanning line group included among the plurality of scanning lines are scanned, and another one of the pair of signal lines is used to perform signal writes.

In particular case second vertical scanning period includes a write period in which a first potential difference V1 is to be given to an upper electrode and a lower electrode. In another particular case, the second vertical scanning period includes a write period in which a second potential difference V2 being greater than the first potential difference V1 is given to the upper electrode and the lower electrode. In the former write period, substantially the same potential as that of a counter electrode is given to the upper electrode, and a different potential from that of the counter electrode is given to the lower electrode. In the latter write period, substantially the same potential as that of the counter electrode is given to the lower electrode, and a different potential from that of the counter electrode is given to the upper electrode.

A liquid crystal display device () includes a first liquid crystal display panel () configured to be capable of taking a transparent displaying state and a second liquid crystal display panel (), such that the first liquid crystal display panel allows at least a portion of light going out of the second liquid crystal display panel to be transmitted in the transparent displaying state. The first liquid crystal display panel includes a first liquid crystal layer (L) interposed between a pair of substrates, and first and second polarizers (F,B) between which the first liquid crystal layer is interposed; the second liquid crystal display panel includes a second liquid crystal layer (L) interposed between a pair of substrates, and a third polarizer (F) placed on a side of the second liquid crystal layer that is closer to the first liquid crystal display panel; the second polarizer (B) of the first liquid crystal display panel is on a side closer to the second liquid crystal display panel; and a transmission axis of the second polarizer (B) and a transmission axis of the third polarizer (F) are not orthogonal.

A liquid crystal display device () includes a liquid crystal display panel () including a first substrate (), a second substrate (), and a liquid crystal layer (). The first substrate includes a first electrode () provided for each pixel, and a second electrode () for generating a lateral field across the liquid crystal layer in cooperation with the first electrode. The second substrate includes a third electrode () for generating a vertical field across the liquid crystal layer in cooperation with the first electrode and the second electrode. Each pixel is capable of switchably presenting a black displaying state where a vertical field is generated across the liquid crystal layer, a white displaying state where a lateral field is generated across the liquid crystal layer, and a transparent displaying state where a rear face side of the liquid crystal display panel is visible in a see-through manner with no voltage being applied to the liquid crystal layer. The first electrode includes a plurality of linear portions (), the plurality of linear portions being arranged so that at least one of the following exists in a plurality: the direction that the linear portions extend and the pitch of the linear portions.

A display device () includes: a display panel () capable of being in a transparent display state where a background scene is viewable through the display panel; a panel light source () that irradiates the display panel with colored light of a plurality of colors in a time division manner; a rear side light source () placed on a rear surface side of the display panel, the rear side light source being capable of emitting colored light of a plurality of colors in a time division manner; and a control circuit that controls emission timings of the colored light from the panel light source and from the rear side light source, wherein the panel light source and the rear side light source are synchronized by the control circuit such that colored light of different colors are not emitted at a same timing.

Display device

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Kawasaki, Japan

Takahiro Sasaki