The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2025
Filed:
Nov. 05, 2021
Sharp Display Technology Corporation, Kameyama, JP;
Seiichi Uchida, Kameyama, JP;
SHARP DISPLAY TECHNOLOGY CORPORATION, Kameyama, JP;
Abstract
Regarding a display device using a display element driven by a current, visibility in an environment where external light is strong is improved while suppressing deterioration in display quality and an increase in cost. An adjustment circuit () and an adjustment capacitor (Cp) for adjusting an amount of drive currents are provided for each one pixel circuit () or every plural pixel circuits (). As for the adjustment capacitor (Cp), a first electrode is connected to a drive current control node (NG) connected to a control terminal of a drive transistor (T), and a second electrode is connected to a light emission intensity adjustment node (NP) in the adjustment circuit (). The adjustment circuit () includes a photodiode () and a photocurrent control transistor (T) provided in series with each other between a high-level power supply line and the light emission intensity adjustment node (NP), and a third initialization transistor (T) provided between an initialization power supply line and the light emission intensity adjustment node (NP).