International Business Machines Corporation

Hidemine Yamanaka

Toshihiko Koseki

Tetsuya Fukunaga

Shinichi Kimura

Kesanao Kobayashi

Manabu Kodate

Mitsuru Ikezaki

Toshihiro Ueki

Hideo Takano

The present invention relates to the improvement in the frame area of the liquid display panel of a liquid crystal display device, and its object is to provide a liquid crystal display device which is enhanced in its blocking ability and the ability of the blocking area to prevent electrostatic failure. A blocking layer 12 is formed in a frame area 1 on TFT array substrate 3. The edge portions of the blocking layer 12 have overlapping areas 14 overlapping the edge portions of each of data lines 10, which are metal layers, with predetermined overlaping margin d as viewed from a direction perpendicular to the surface of the TFT array substrate 3. An insulation layer 16 is formed on the blocking layer 12 and the TFT array substrate 3. On the insulation a semiconductor layer 18 is formed. A plurality of data lines 10 is disposed on the semiconductor layer 18.

Liquid crystal display device with improved blocking ability of frame

The present invention is a color filter and method of making a color filter in which a reactive dye is added to a photosensitive composite, which contains pigment to form the color filter, and the reactive dye reacts with the binder polymer of the photosensitive composite to form a color filter having a high contrast color filter. The photosensitive composite, which has a primary color and which contains the product of the binder polymer and the reactive dye, is deposited on a glass substrate over a shielding layer. A layer of PVA is then deposited on the photosensitive composite layer. A masking layer then defines the area of the specific primary color for the photosensitive composite. This process is then repeated for the remaining primary colors of the color filter. The color filter produced by this process has a very high contrast ratio.

Color filter and method of fabricating a color filter

In a liquid crystal display device including a first transparent insulating substrate having a common electode formed theron; a second transparent insulating substrate having gate lines formed in a first direction; data lines formed in a second direction so as to intersect said gate lines, liquid crystal display cells, each at a crosspoint of said gate and data lines; the cells having a thin film transistor and a display electrode; a light shielding layer having an aperture for exposing a display area of each display electrode; a liquid crystal material retained between said first and second substrates, and a liquid crystal orientating layer on at least one of the substrates, the improvement comprising, the light shielding layer at an edge of said aperture being located in an up stream direction with respect to a rubbing direction of the orientating layer of the substrate, comprising a thin light shielding layer formed at a periphery of the display electrode for defining an edge of the aperture, and a thick light shielding layer having an edge positioned on the thin light shielding layer.

Active matrix liquid crystal display device having two light shielding

Growing community of inventors

Yamato, Japan

Hidemine Yamanaka