公开(公告)号：US09728118B2

公开(公告)日：2017-08-08

申请号：US14694997

申请日：2015-04-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung-Chun Park

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3208 ,  H02M3/158

CPC classification number: G09G3/2096 ,  G09G3/3208 ,  G09G2330/023 ,  H02M3/1584

Abstract: A DC-DC converter for supplying a display panel with first and second power voltages, the DC-DC converter includes: a first converting module to convert an input power voltage into the first power voltage in response to a control signal; a sensor to detect a drive current of the display panel when the first power voltage is output; and a second converting module to convert the input power voltage into the second power voltage lower than the first power voltage in response to the control signal, the second converting module including: a first inverting converter to generate the second power voltage corresponding to the input power voltage regardless of an amount of the detected drive current; and a second inverting converter to selectively generate the second power voltage corresponding to the input power voltage and according to the amount of the detected drive current.

公开(公告)号：US20150244267A1

公开(公告)日：2015-08-27

申请号：US14622720

申请日：2015-02-13

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung-Chun Park

IPC: H02M3/158 ,  G09G3/32

CPC classification number: H02M3/158 ,  G09G3/3233 ,  G09G3/3258 ,  G09G2330/00 ,  G09G2330/028 ,  G09G2360/08 ,  H02M3/1588 ,  Y02B70/1466

Abstract: a DC-DC converter, including a conversion unit configured to convert a battery voltage input to an input terminal of the DC-DC converter into a first voltage, and to output the first voltage to an output terminal of the DC-DC converter, a feedback voltage generation unit configured to generate a feedback voltage by dividing the first voltage, an error amplifier (AMP) configured to supply, to a pulse width modulation (PWM) control circuit, an error signal indicating a voltage difference between the feedback voltage and a reference voltage, the PWM control circuit being configured to control the conversion unit, corresponding to the error signal, thereby changing the first voltage, and a reference voltage supply unit configured to supply the reference voltage to the error AMP, and to change the reference voltage.

Abstract translation: DC-DC转换器，包括转换单元，其被配置为将输入到DC-DC转换器的输入端子的电池电压转换为第一电压，并将第一电压输出到DC-DC转换器的输出端子; 反馈电压产生单元，被配置为通过将第一电压除以反馈电压，构造成向脉冲宽度调制（PWM）控制电路提供的误差放大器（AMP）提供指示反馈电压和反馈电压之间的电压差的误差信号 参考电压，所述PWM控制电路被配置为控制对应于所述误差信号的转换单元，从而改变所述第一电压;以及参考电压供应单元，被配置为将所述参考电压提供给所述误差AMP，并且改变所述参考电压 。

公开(公告)号：US12046999B2

公开(公告)日：2024-07-23

申请号：US17135860

申请日：2020-12-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung-Chun Park

IPC: H02M3/158 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  H02M3/156

CPC classification number: H02M3/158 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  H02M3/156 ,  G09G2300/0842 ,  G09G2310/08 ,  G09G2330/021 ,  G09G2330/028

Abstract: A DC-DC converter includes: a first switch; a second switch connected to the first switch; a mode selecting circuit to select a converting mode from one of at least a first mode and a second mode based on an input voltage; and a controller to generate a first switching control signal for controlling the first switch based on the converting mode, and a second switching control signal for controlling the second switch based on the converting mode.

公开(公告)号：US09892670B2

公开(公告)日：2018-02-13

申请号：US14837119

申请日：2015-08-27

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jeong-Min Seo ,  Sung-Chun Park

IPC: G05F1/577 ,  G09G3/20

CPC classification number: G09G3/20 ,  G09G2330/021 ,  G09G2330/028

Abstract: A power management driver includes a boost converter, a plurality of regulators, a sequence controller, and an operation controller. The boost converter converts an input voltage to a source drive voltage for drive a source driver based on a drive enable signal. The regulators regulate the source drive voltage to generate a plurality of drive voltages. The regulators corresponding to a respective number of predetermined devices. The sequence controller controls the timing for providing the source drive voltage to the source driver. The operation controller adjusts active periods of first and second control signals to control the regulators and the sequence controller.

公开(公告)号：US09558693B2

公开(公告)日：2017-01-31

申请号：US14702918

申请日：2015-05-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Bo-Young An ,  Sung-Chun Park

IPC: G09G3/3208 ,  G09G3/32

CPC classification number: G09G3/3208 ,  G09G2310/08 ,  G09G2330/022 ,  G09G2330/028

Abstract: A display device includes a display panel driver and a DC-DC converter. The display panel driver divides one frame into a plurality of periods and outputs a control signal to generate an analog supply voltage, a first power voltage, and a second power voltage for driving pixels. The DC-DC converter receives the control signal from the display panel driver through a single wire. The DC-DC converter includes an analog supply voltage generator, a first power voltage generator, and a second power voltage generator. The analog supply voltage generator generates the analog supply voltage during a first pulse period. The first power voltage generator generates the first power voltage during a second pulse period. The second power voltage generator generates the second power voltage during the third pulse period.

Abstract translation: 显示装置包括显示面板驱动器和DC-DC转换器。 显示面板驱动器将一帧分割成多个周期，并输出控制信号以产生用于驱动像素的模拟电源电压，第一电源电压和第二电源电压。 DC-DC转换器通过单线接收来自显示面板驱动器的控制信号。 DC-DC转换器包括模拟电源电压发生器，第一电源电压发生器和第二电力电压发生器。 模拟电源电压发生器在第一个脉冲周期内产生模拟电源电压。 第一电源电压发生器在第二脉冲周期期间产生第一电源电压。 第二电源电压发生器在第三脉冲周期期间产生第二电源电压。

公开(公告)号：US20160125791A1

公开(公告)日：2016-05-05

申请号：US14694997

申请日：2015-04-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung-Chun Park

IPC: G09G3/20 ,  H02M3/335 ,  G09G3/32

CPC classification number: G09G3/2096 ,  G09G3/3208 ,  G09G2330/023 ,  H02M3/1584

Abstract: A DC-DC converter for supplying a display panel with first and second power voltages, the DC-DC converter includes: a first converting module to convert an input power voltage into the first power voltage in response to a control signal; a sensor to detect a drive current of the display panel when the first power voltage is output; and a second converting module to convert the input power voltage into the second power voltage lower than the first power voltage in response to the control signal, the second converting module including: a first inverting converter to generate the second power voltage corresponding to the input power voltage regardless of an amount of the detected drive current; and a second inverting converter to selectively generate the second power voltage corresponding to the input power voltage and according to the amount of the detected drive current.

Abstract translation: 一种用于向显示面板提供第一和第二电源电压的DC-DC转换器，所述DC-DC转换器包括：第一转换模块，用于响应于控制信号将输入电源电压转换为所述第一电源电压; 传感器，用于当输出第一电源电压时检测显示面板的驱动电流; 以及第二转换模块，用于响应于所述控制信号将所述输入电源电压转换为低于所述第一电源电压的所述第二电源电压，所述第二转换模块包括：第一反相转换器，用于产生对应于所述输入功率的第二电源电压 无论检测到的驱动电流量如何; 以及第二反相转换器，用于选择性地产生对应于输入电源电压的第二电源电压，并根据检测到的驱动电流的量。

公开(公告)号：US20160011612A1

公开(公告)日：2016-01-14

申请号：US14695027

申请日：2015-04-23

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Sung-Chun Park

IPC: G05F1/575 ,  G09G3/32

CPC classification number: G05F1/575 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2330/028 ,  H02M3/156

Abstract: A DC-DC converter includes: a converter configured to convert a voltage input to an input terminal into a first voltage, and to output the first voltage to an output terminal; a controller configured to receive a feedback voltage and a reference voltage, and to control the converter; a first auxiliary voltage generator configured to receive a first input voltage and a second input voltage, and to generate a plurality of first auxiliary voltages; a first selector configured to select an initial voltage and a target voltage from the first auxiliary voltages; a second auxiliary voltage generator configured to receive the initial voltage and the target voltage, and to generate a plurality of second auxiliary voltages; and a second selector configured to select any one voltage from the initial voltage, the target voltage, and the second auxiliary voltages, and to supply the selected voltage to the controller as the reference voltage.

Abstract translation: DC-DC转换器包括：转换器，被配置为将输入到输入端的电压转换为第一电压，并将第一电压输出到输出端; 控制器，被配置为接收反馈电压和参考电压，并且控制所述转换器; 第一辅助电压发生器，被配置为接收第一输入电压和第二输入电压，并且产生多个第一辅助电压; 第一选择器，被配置为从所述第一辅助电压中选择初始电压和目标电压; 配置成接收初始电压和目标电压并产生多个第二辅助电压的第二辅助电压发生器; 以及第二选择器，被配置为从初始电压，目标电压和第二辅助电压中选择任何一个电压，并将选择的电压提供给控制器作为参考电压。