公开(公告)号：US09514689B2

公开(公告)日：2016-12-06

申请号：US14643465

申请日：2015-03-10

Applicant: Samsung Display Co., Ltd.

Inventor： Seok Hwan Lee ,  Seung Young Choi ,  Byung Kyou Min ,  Dae Sik Lee

IPC: G09G3/34

CPC classification number: G09G3/3406 ,  G09G3/3426 ,  G09G2320/0247 ,  G09G2320/062 ,  G09G2320/0626 ,  G09G2320/0646 ,  G09G2360/16

Abstract: A display device includes at least one light source array configured to provide a display panel with light, a dimming signal generating unit configured to receive an image data signal and generate a dimming signal, a first comparator configured to receive the dimming signal output from the dimming signal generating unit and a preset critical value and generate a comparison signal, a dimming modulating unit configured to receive the comparison signal output from the first comparator and the dimming signal output from the dimming signal generating unit and modulate the dimming signal, a constant current controller configured to receive the dimming signal output from the dimming modulating unit and a voltage from a sensor node, and to control a light driving current driving the light source array, and a resistor controller configured to change resistors connected to the sensor node by the comparison signal output from the first comparator.

Abstract translation: 显示装置包括被配置为向显示面板提供光的至少一个光源阵列，调光信号产生单元，被配置为接收图像数据信号并产生调光信号;第一比较器，被配置为接收从调光输出的调光信号 信号生成单元和预设临界值，并生成比较信号;调光调制单元，被配置为接收从第一比较器输出的比较信号和从调光信号生成单元输出的调光信号，并调制调光信号;恒流控制器 被配置为接收从调光单元输出的调光信号和来自传感器节点的电压，并且控制驱动光源阵列的光驱动电流;以及电阻控制器，被配置为通过比较信号来改变连接到传感器节点的电阻器 从第一比较器输出。

公开(公告)号：US11948502B2

公开(公告)日：2024-04-02

申请号：US18143173

申请日：2023-05-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Byung Kyou Min

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2310/027 ,  G09G2320/0626 ,  G09G2330/021

Abstract: A power voltage supply circuit for a display device including: a branch node; a voltage converter having an output terminal connected to the branch node, the voltage converter configured to convert an input voltage received from outside, and output a power voltage to the branch node; a first output node connected to the branch node and configured to output the power voltage; a second output node connected to the branch node; and a charge pump connected between the branch node and the second output node and configured to transform the power voltage with different gain values in response to a control signal.