IP Library Granted Patent US 10,692,457
Granted Patent B2
US 10,692,457 · App. 15/864,836 · Granted Jun 23, 2020

Drive circuit having output transistor with on-resistance value and display device therewith

Inventors: Yoshihiro Imajo (Hyogo, JP); Masahiro Ishii (Hyogo, JP); Kenta Endo (Hyogo, JP); Tetsuo Fukami (Hyogo, JP)
Assignee: Panasonic Liquid Crystal Display Co., Ltd.
G09G3/3685G09G3/20G09G3/36G09G3/3677G11C19/28G09G2310/0286G09G2320/02G09G2320/0223
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 10,692,457
App. No.
15/864,836
Granted
Jun 23, 2020
Kind
B2
Abstract

A driving circuit including an output circuit that outputs a signal to a lead line electrically connected to a signal line provided in a display panel; and an output transistor that is provided in the output circuit and connected to an output terminal of the output circuit. An on-resistance value of the output transistor is set according to a resistance value of the lead line electrically connected to the output transistor.

Claims (9)

1. A display device comprising:

a display panel in which a plurality of signal lines and a plurality of lead lines electrically connected to the plurality of signal lines are provided; and

a driving circuit including a plurality of output circuits that output a signal to the plurality of lead lines and output transistors that are provided in the output circuits and connected to output terminals of the output circuits,

wherein on-resistance values of the output transistors are set according to resistance values of the lead lines electrically connected to the output transistors, an on-resistance value of an output transistor of the output transistors being set so as to become smaller as a length of a lead line of the plurality of lead lines electrically connected to the output transistor increases, and so as to become larger as the length of the lead line decreases, and

among the plurality of lead lines, longer ones of the lead lines are narrower than shorter ones of the lead lines.

2. The display device according to claim 1 , further comprising a resistor that is electrically connected to an output terminal of at least one of the plurality of output circuits, wherein

a resistance value of the resistor is set according to the resistance values of the lead lines electrically connected to the resistor.

3. The display device according to claim 1 , wherein

a part of the plurality of lead lines extends in a direction oblique to a direction in which the plurality of signal lines electrically connected to the driving circuit extend.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 18, 2023
From: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
To: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Reel/Frame 064292/0775 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 13, 2018
From: IMAJO, YOSHIHIRO; ISHII, MASAHIRO; ENDO, KENTA; FUKAMI, TETSUO
To: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
Reel/Frame 045180/0633 →
Priority Claims (1)
JP 2015-136534 · Jul 7, 2015 · national
Continuity (2)
Continuation PCTJP2016003231 · Jul 7, 2016
Related Publication 20180130438A1 · May 10, 2018