Invention Grant
- Patent Title: Cost effective low pin/ball count level-shifter for LCD bias applications supporting charge sharing of gate lines with perfect waveform matching
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Application No.: US14989424Application Date: 2016-01-06
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Publication No.: US09672781B2Publication Date: 2017-06-06
- Inventor: Stefan A. Reithmaier , Josy Bernard , Carsten I. Stoerk , Nicolas M Guibourg
- Applicant: Texas Instruments Deutschland GmbH
- Applicant Address: DE Freising
- Assignee: Texas Instruments Deutschland GmbH
- Current Assignee: Texas Instruments Deutschland GmbH
- Current Assignee Address: DE Freising
- Agent William B. Kempler; Charles A. Brill; Frank D. Cimino
- Main IPC: G09G3/36
- IPC: G09G3/36

Abstract:
A level shifter circuit has a plurality of channels for providing signals to a capacitive load and has circuits for sharing charge stored in the capacitive load between the channels. A first pair of channel clock generating circuits are coupled respectively to a first pair of channels. A second pair of channel clock generating circuits are coupled respectively to a second pair of channels. A pair of switches couple the first pair of channels together and the second pair of channels together, respectively, for sharing charge between the channels. A single resistor is coupled in circuit with all of the channels for controlling a slope of charge sharing between channels.
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