Patent ID: 11862061
Assignee: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A shift register, comprising:
at least one transistor;
wherein each of the at least one transistor comprises a gate electrode, a gate insulating layer, an active layer, a first electrode and a second electrode; the first electrode and the second electrode are of comb-shaped structures;
the first electrode comprises first comb tooth portions and second comb tooth portions arranged at intervals, and a first comb handle portion connecting the first comb tooth portions and the second comb tooth portions; and comb tooth electrodes of the first comb tooth portions have a different length from that of comb tooth electrodes of the second comb tooth portions;
the second electrode comprises third comb tooth portions and fourth comb tooth portions arranged at intervals, and a second comb handle portion connecting the third comb tooth portions and the fourth comb tooth portions;
the first comb tooth portions and the third comb tooth portions form an inter-digital structure, the second comb tooth portions and the fourth comb tooth portions form an inter-digital structure, and orthographic projections of the first comb tooth portions, the third comb tooth portions, the second comb tooth portions and the fourth comb tooth portions on the active layer are not overlapped with each other; and
orthographic projections of the first comb tooth portions, the second comb tooth portions, the first comb handle portion and the second comb handle portion on the active layer defines a short circuit prevention region for preventing a short circuit between the first electrode and the second electrode from occurring;
wherein a length of each of the comb tooth electrodes of the first comb tooth portions is greater than that of the second comb tooth portions; and
a length of each of comb tooth electrodes of the third comb tooth portions is greater than that of the fourth comb tooth portions;
wherein the first comb tooth portions comprise a plurality of comb tooth electrodes arranged in parallel and at equal intervals;
the second comb tooth portions comprise a plurality of comb tooth electrodes arranged in parallel and at equal intervals;
the third comb tooth portions comprise a plurality of comb tooth electrodes arranged in parallel and at equal intervals; and
the fourth comb tooth portions comprise a plurality of comb tooth electrodes arranged in parallel and at equal intervals;
wherein the first comb tooth portions and the third comb tooth portions are staggered to form a first portion having an inter-digital structure, and
the second comb tooth portions and the fourth comb tooth portions are staggered to form a second portion having an inter-digital structure,
wherein in the first portion, a gap between the comb tooth electrodes of the first comb tooth portion and the third comb tooth portion adjacent to each other is a first gap; and
in the second portion, a gap between the comb tooth electrodes of the second comb tooth portion and the fourth comb tooth portion adjacent to each other is a second gap; and
wherein the first comb tooth portion and the second comb tooth portion defining the short circuit prevention region are adjacent to each other, and
a gap between the first comb tooth portion and the second comb tooth portion, which are adjacent to each other and define the short circuit prevention region, is the first gap or the second gap.