Victor Company of Japan, Limited

Jvc Kenwood Corporation

Hideo Kurogane

Masato Furuya

Yoshihiro Hori

Masanobu Shigeta

Toshihiko Nishihata

Manabu Endou

Taku Katayama

Masaki Shintani

Shuichi Konno

Takashi Kozakai

Aiichiro Fujiyama

Akira Honma

A liquid crystal display apparatus is composed of a plurality of pixels, a plurality of switches and a driver circuit for driving the plurality of switches. Each of the plurality of pixels is provided with a liquid crystal element in which a liquid crystal layer is sandwiched between a pixel driving electrode and a common electrode confronting with each other, a first sampling and holding circuit, a second sampling and holding circuit and a switching device. The switching device switches a positive image signal voltage and a negative image signal voltage, and supplies the positive and negative image signal voltages alternately to the pixel driving electrode.

Liquid crystal display apparatus, and driving circuit and driving method thereof

A display matrix substrate capable of minimizing an adverse effect of a defective switching element developed in the display matrix substrate. On a substrate,plural pixel electrodes,A,,B are formed in a matrix form. Switching elements,A,,B are provided corresponding to the respective plural pixel electrodes,A,,B. Voltage is applied to the pixel electrodes,A,,B to display an image on the display matrix substrate by successively operating the switching elements. Defective switching element,A among the plural switching elements is preliminarily detected in a production process. A pixel electrode,A of the defective switching element,A is electrically connected to a pixel electrode,B of a normal switching element,B adjacent to the defective switching element,A. Thereby, it is possible to minimize the adverse effect of the defective switching element,A to a displayed image by making the pixel electrode of the defective switching element,A operate together with the pixel electrode of the normal switching element,B adjacent thereto.

Display matrix substrate, production method of the same and display matrix circuit

An active circuit element substrate is provided with a matrix array of active circuit elements. Each of the active circuit elements includes 1) a switching element, 2) a capacitor, 3) an electrically-conductive portion connecting the switching element and the capacitor, 4) an insulating layer covering the switching element, the capacitor, and the electrically-conductive portion, and 5) a reflective electrode layer connected to the electrically-conductive portion and extending on the insulating layer. The insulating layer has a surface flat so as to agree with a mirror finished surface. The reflective electrode layer extends on the surface of the insulating layer. A transparent common electrode film extends on a surface of a transparent substrate. An optical modulation layer is located between the reflective electrode layers on the active circuit element substrate and the common electrode film on the transparent substrate. A voltage difference is generated between each of the reflective electrode layers and the common electrode film in response to a signal applied to a control terminal of the related switching element, and light incident to the transparent substrate is modulated by the optical modulation layer in response to the voltage difference and is reflected by the related reflective electrode layer. A light shielding layer covers regions between the reflective electrode layers except portions occupied by metal areas of the active circuit elements as viewed along a direction of incidence of the light. The light shielding layer extends in the insulating layer.

Reflection-type display apparatus having antireflection films

A liquid crystal display device is provided by forming an optical blocking layer which blocks intensive incident light leaking into switching elements. A plurality of switching elements 1 is formed on a substrate 10. A first electrode 2 is connected to and positioned over the switching element. A storage capacitor 3 is connected and positioned under the first electrode. An optical reflector 15 is formed on the first electrode. A transparent second electrode 4 is spaced apart from the optical reflector. A layer of liquid crystal material 5 is positioned between the optical reflector and the second electrode. A substantially nonconductive optical blocking layer 20 is formed between the first electrode and the switching element.

Liquid crystal display apparatus

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Kanagawa-ken, Japan

Hideo Kurogane