THIN-FILM TRANSISTOR ARRAY SUBSTRATE AND DISPLAY DEVICE

• Main Authors: DAITOH, Tohru, KITAGAWA, Hideki, HARA, Yoshihito, MAEDA, Masaki, KAWASAKI, Tatsuya, IMAI, Hajime, ITOH, Toshikatsu
• Format: Patent
• Language: English
• Published: 13.05.2021
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; SEMICONDUCTOR DEVICES; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

The present invention provides a thin-film transistor array substrate that prevents semiconductor layers of thin-film transistor elements from having step disconnection even when the frame width is reduced. The thin-film transistor array substrate of the present invention includes a thin-film transistor element in a pixel region and a terminal in a terminal region. The thin-film transistor array substrate sequentially includes a support, an insulating layer, a gate electrode, a gate insulating layer, and a semiconductor layer in a cross-sectional view of the pixel region. A region with the insulating layer encompasses a region with the semiconductor layer in a plan view of the pixel region. The thin-film transistor array substrate sequentially includes the support, a lead line extending from the terminal, and the insulating layer in a cross-sectional view of the terminal region.