公开(公告)号：US20150235606A1

公开(公告)日：2015-08-20

申请号：US14571248

申请日：2014-12-15

Applicant: Silicon Laboratories Inc.

Inventor： Douglas Piasecki ,  Thomas Saroshan David ,  Timothy T. Rueger ,  Stefan Mastovich ,  Jia-Hau Liu

IPC: G09G3/36 ,  G09G5/18

CPC classification number: G09G3/3696 ,  G06F3/0412 ,  G06F3/044 ,  G09G3/18 ,  G09G3/3611 ,  G09G5/18 ,  G09G2310/0278 ,  G09G2330/02 ,  G09G2330/021 ,  G09G2330/022

Abstract: An LCD controller includes a charge pump circuit for generating a charge voltage responsive to an external voltage and a clock signal. An oscillator generates the clock signal responsive to at least one bias voltage. The oscillator has a high power mode of operation and a low power mode of operation. Bias circuitry for applies the at least one bias voltage to the oscillator. The at least one bias voltage is applied to the oscillator from an external source in the high power mode of operation and the at least one bias voltage is applied to the oscillator from a source within the oscillator in the low power mode of operation. An LCD driver voltage circuit generates a plurality of LCD driver voltages for driving segments of an LCD display responsive to the charge voltage.

Abstract translation: LCD控制器包括用于产生响应于外部电压和时钟信号的充电电压的电荷泵电路。 振荡器响应于至少一个偏置电压产生时钟信号。 振荡器具有高功率工作模式和低功耗工作模式。 用于将至少一个偏置电压施加到振荡器的偏置电路。 在高功率工作模式下，至少一个偏置电压从外部源施加到振荡器，并且至少一个偏置电压在低功耗工作模式下从振荡器内的源施加到振荡器。 LCD驱动器电压电路响应于充电电压产生用于驱动LCD显示器段的多个LCD驱动器电压。

公开(公告)号：US20140168551A1

公开(公告)日：2014-06-19

申请号：US13720037

申请日：2012-12-19

Applicant: SILICON LABORATORIES INC.

Inventor： Kenneth W. Fernald ,  Douglas Piasecki

IPC: G02F1/133

CPC classification number: G09G3/3681 ,  G09G3/3655 ,  G09G3/3696

Abstract: An apparatus includes a multiplexed liquid crystal display (LCD) controller. The LCD controller is adapted to operate in at least first and second phases of operation. The LCD controller is adapted to drive a plurality of signal lines to a first set of voltages during the first phase of operation and to a second set of voltages during the second phase of operation. The LCD controller is further adapted to couple to a node at least some of the plurality of signal lines between the first and second phases of operation.

Abstract translation: 一种装置包括多路复用液晶显示（LCD）控制器。 LCD控制器适于在至少第一和第二操作阶段中操作。 LCD控制器适于在第一操作阶段将多条信号线驱动到第一组电压，并在第二操作阶段期间驱动第二组电压。 LCD控制器还适于在第一和第二操作阶段之间耦合到节点至少一些信号线。