Kabushiki Kaisha Toshiba

Toshiba Matsushita Display Technology Co., Ltd.

Masumi Manabe

Hitoshi Hatoh

Muneharu Akiyoshi

Daisuke Miyazaki

Jin Hirosawa

Nobuko Fukuoka

Teruyuki Midorikawa

Yasuharu Tanaka

Atsuyuki Manabe

Kisako Ninomiya

Kiyoshi Shohara

Masanori Imakawa

Natsuko Maya

Minako Kurosaki

A liquid crystal display panel includes an array substrate including a scanning line, a signal line crossing the scanning line, a switching element electrically connected to the scanning line and the signal line, and a pixel electrode formed on the scanning line, the signal line, and the switching element and electrically connected to the switching element, an opposite substrate including a common electrode with a through-hole and arranged opposite to the array substrate with a gap, a columnar spacer formed on either one of the array substrate and the opposite substrate and positioned away from the pixel electrode, the columnar spacer overlapping the through-hole and holding the gap between the array substrate and the opposite substrate, and a liquid crystal layer sandwiched between the array substrate and the opposite substrate.

Liquid crystal display panel

A color filter is disposed on a switching element array substrate. The color filter is composed of a plurality of kinds of color elements and an aperture. Two of the filter elements are overlapped at one end portion thereof. Each of the filter elements is covered with a pixel electrode. The pixel electrode is connected to the switching element through the aperture. This structure reduces electric coupling between the pixel electrode and the gate and signal lines. Optimum conditions among the overlapped width, and the aperture diameter and location are set to prevent the filter element from peeling off the array substrate so that the production yield can be significantly improved.

Liquid crystal display device and a method of making the same having overlapping color filters with apertures

Disclosed is a liquid crystal display device, comprising two substrates each having an alignment film, a sealing member arranged in the outer peripheries of the two substrates to permit the outer peripheries of these two substrates, which are arranged such that the alignment films of these two substrates face each other, to be bonded to each other except a liquid crystal filling port, a spacer for keeping the two substrates a predetermined distance apart from each other, a liquid crystal layer formed by filling a liquid crystal material through the liquid crystal filling port into the clearance between the two substrates, and an end-sealing material for sealing the liquid crystal filling port, wherein total amounts of an alkyl acid, phenyl carboxylic acid or a phenyl carboxylic acid derivative, phenylene dicarboxylic acid or a phenylene dicarboxylic acid derivative, an alkyl amine, aniline or an aniline derivative, phenylene diamine or a phenylene diamine derivative, phenyleneamine carboxylic acid or a phenyleneamine carboxylic acid derivative, an alkyl imide, a phthalimide derivative, a cyano benzene derivative, and a dicyano benzene derivative contained in the sealing member, the end-sealing material and the spacer is not larger than 3%.

Liquid crystal display device

Growing community of inventors

Fukaya, Japan

Masumi Manabe