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VCOM and Reference Voltage Source Circuit for TFT LCD Display

IP.com Disclosure Number: IPCOM000013339D
Original Publication Date: 2001-Oct-01
Included in the Prior Art Database: 2003-Jun-18

Publishing Venue

IBM

Abstract

Disclosed is a circuit for generating Vcom and reference voltages for TFT LCD display module. The circuit is intended for reduce the product cost without suffering the display image quality. Figure 1 shows the simplified electrical configuration of a conventional TFT LCD display module. In this example, the module is designed on DC supplied Vcom technic and bi-level gate line driving method. Signal Line Driver