Sharp Kabushiki Kaisha Corporation

Noboru Nakanishi

Yuki Kawashima

Yoshimizu Moriya

Yasutoshi Tasaka

Yasuyoshi Kaise

Kaori Saitoh

A liquid crystal display element () of the present invention includes a transparent common electrode () which is provided in a layer between (i) a scan line () and a signal line () and (ii) a pixel electrode () so that the transparent common electrode () covers a location which faces at least one of (i) at least part of the scan line () and (ii) at least part of the signal line (), the transparent common electrode () having an opening part () at a location which faces the pixel electrode ().

Liquid crystal display element and liquid crystal display device

An active matrix substrate (A) includes a thin film transistor (), a scanning line () substantially parallel to a first direction, a signal line () substantially parallel to a second direction which is orthogonal to the first direction, a first interlayer insulating layer () covering the thin film transistor, a lower layer electrode () provided on the first interlayer insulating layer, a dielectric layer () provided on the lower layer electrode, and an upper layer electrode () overlapping at least a portion of the lower layer electrode via the dielectric layer. A first contact hole () for allowing the upper layer electrode to be electrically connected to a drain electrode () of the thin film transistor includes a first aperture () formed in the first interlayer insulating layer and a second aperture () formed in the dielectric layer. A width of the first aperture along one of the first direction and the second direction is smaller than a width of the second aperture along the one direction. When viewed from the normal direction of the substrate, a portion of the contour of the second aperture is located inside the contour of the first aperture.

Active matrix substrate, liquid crystal display device and method for manufacturing active matrix substrate

Arbitrary one pixel P (contact hole pixel ()) is selected in a predetermined demarcated area () of the liquid crystal display device of the present invention. The pixel P is (i) any of four pixels Qthrough Q(contact hole pixels ()) closest to another pixel P or (ii) (a) contained in a quadrangle whose vertices correspond to respective four pixels Qthrough Qclosest to the pixel P and (b) any of four pixels Qthrough Qclosest to another pixel P. Further, two diagonal lines of a quadrangle formed by four pixels Qthrough Qare inclined at respective two angles with respect to a gate bus line (line segment A-B), and a difference between the two angles is smaller than 30 degrees. Moreover, the contact hole pixels () are provided for respective source bus lines in the predetermined demarcated area ().

Growing community of inventors

Osaka, Japan

Noboru Nakanishi