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:
Nov. 29, 2016
Filed:
Jan. 10, 2014
Hannstar Display Corporation, New Taipei, TW;
Chia-Hua Yu, New Taipei, TW;
Sung-Chun Lin, Tainan, TW;
Hsuan-Chen Liu, Kaohsiung, TW;
Chien-Ting Chan, Tainan, TW;
Hannstar Display Corporation, Taipei, TW;
Abstract
A liquid crystal display and its bidirectional shift register device including N stages of shift registers are provided. An istage shift register of the shift registers includes a pre-charge unit, a pull-up unit and a pull-down unit. The pre-charge unit outputs a pre-charge signal according to outputs of (i−2)and (i+2)stage shift registers. The pull-up unit outputs a scan signal. A first discharge unit of the pull-down unit determines whether to pull the scan signal down to a reference voltage potential according to the pre-charge signal and a first voltage-dividing signal associated with a first level signal. A second discharge unit of the pull-down unit determines whether to pull the scan signal down to the reference voltage potential according to the pre-charge signal and a second voltage-dividing signal associated with a second level signal.