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公开(公告)号：US09847071B2
公开(公告)日：2017-12-19
申请号：US14706703
申请日：2015-05-07
Applicant: JAPAN DISPLAY INC.
Inventor： Shouji Nagao
CPC classification number: G09G3/3696 , G06F1/3262 , G06F1/3265 , G06F3/0412 , G06F3/044 , G06F3/047 , G09G2300/0426 , G09G2330/021 , Y02D10/153 , Y02D50/20
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
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公开(公告)号：US09082367B2
公开(公告)日：2015-07-14
申请号：US13851229
申请日：2013-03-27
Applicant: Japan Display Inc.
Inventor： Shouji Nagao
CPC classification number: G09G3/3696 , G06F1/3262 , G06F1/3265 , G06F3/0412 , G06F3/044 , G06F3/047 , G09G2300/0426 , G09G2330/021 , Y02D10/153 , Y02D50/20
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
Abstract translation: 在具有触摸面板功能的液晶显示（LCD）装置中，在待机状态下功耗降低。 显示部分被分成由多个显示线组成的块。 对每个块设置对电极。 驱动电路向每个块的对电极选择性地将用于液晶显示器的电压和用于触摸屏扫描的电压提供。 驱动电路具有将视频电压提供给视频线的源极放大器。 驱动电路降低了源极放大器中的电流，使得电流低于正常工作时的电流，降低功耗，并停止源极放大器的工作，并将GND电压提供给视频线 进一步降低功耗。
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公开(公告)号：US11822756B2
公开(公告)日：2023-11-21
申请号：US18104324
申请日：2023-02-01
Applicant: Japan Display Inc.
Inventor： Shouji Nagao
IPC: G06F3/041 , G06F3/044 , G09G3/36 , G06F1/3234 , G06F3/047
CPC classification number: G06F3/0446 , G06F1/3262 , G06F1/3265 , G06F3/044 , G06F3/047 , G06F3/0412 , G06F3/0445 , G09G3/3696 , G09G2300/0426 , G09G2330/021 , Y02D10/00 , Y02D30/50
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
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公开(公告)号：US11175785B2
公开(公告)日：2021-11-16
申请号：US17094249
申请日：2020-11-10
Applicant: Japan Display Inc.
Inventor： Shouji Nagao
IPC: G06F3/041 , G06F3/044 , G09G3/36 , G06F1/3234 , G06F3/047
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
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公开(公告)号：US20170011691A1
公开(公告)日：2017-01-12
申请号：US15203959
申请日：2016-07-07
Applicant: Japan Display Inc.
Inventor： Norio Mamba , Takeshi Shibata , Shouji Nagao
IPC: G09G3/36
CPC classification number: G09G3/3696 , G09G3/3677
Abstract: A display device includes a gate scanning circuit and a driver IC. The driver IC includes a voltage detection circuit for detecting a voltage level of an external power supply, a voltage generation circuit for generating the voltage for driving the gate line, a switching circuit for switching between the output voltage of the voltage generation circuit and the voltage of the external power supply, and a drive circuit. Upon detection of the voltage outside of the predetermined voltage range by the voltage detection circuit, the switching circuit supplies the voltage of the external power supply to the gate scanning circuit. The gate scanning circuit selects all gate lines for outputting the voltage of the external power supply. The drive circuit supplies the GND level to all the source lines.
Abstract translation: 显示装置包括门扫描电路和驱动器IC。 驱动器IC包括用于检测外部电源的电压电平的电压检测电路，用于产生用于驱动栅极线的电压的电压产生电路，用于在电压产生电路的输出电压和电压之间切换的开关电路 的外部电源，以及驱动电路。 当通过电压检测电路检测到预定电压范围之外的电压时，开关电路将外部电源的电压提供给栅极扫描电路。 栅极扫描电路选择用于输出外部电源的电压的所有栅极线。 驱动电路将GND电平提供给所有源极线。
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Patent Agency Ranking
公开(公告)号：US10475412B2
公开(公告)日：2019-11-12
申请号：US16351633
申请日：2019-03-13
Applicant: Japan Display Inc.
Inventor： Shouji Nagao
IPC: G06F3/041 , G09G3/36 , G06F1/3234 , G06F3/044 , G06F3/047
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
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公开(公告)号：US10096295B2
公开(公告)日：2018-10-09
申请号：US15805204
申请日：2017-11-07
Applicant: Japan Display Inc.
Inventor： Shouji Nagao
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
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公开(公告)号：US11599233B2
公开(公告)日：2023-03-07
申请号：US17498053
申请日：2021-10-11
Applicant: Japan Display Inc.
Inventor： Shouji Nagao
IPC: G06F3/041 , G06F3/044 , G09G3/36 , G06F1/3234 , G06F3/047
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
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公开(公告)号：US10297223B2
公开(公告)日：2019-05-21
申请号：US15203959
申请日：2016-07-07
Applicant: Japan Display Inc.
Inventor： Norio Mamba , Takeshi Shibata , Shouji Nagao
Abstract: A display device includes a gate scanning circuit and a driver IC. The driver IC includes a voltage detection circuit for detecting a voltage level of an external power supply, a voltage generation circuit for generating the voltage for driving the gate line, a switching circuit for switching between the output voltage of the voltage generation circuit and the voltage of the external power supply, and a drive circuit. Upon detection of the voltage outside of the predetermined voltage range by the voltage detection circuit, the switching circuit supplies the voltage of the external power supply to the gate scanning circuit. The gate scanning circuit selects all gate lines for outputting the voltage of the external power supply. The drive circuit supplies the GND level to all the source lines.
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公开(公告)号：US10276124B2
公开(公告)日：2019-04-30
申请号：US16122061
申请日：2018-09-05
Applicant: Japan Display Inc.
Inventor： Shouji Nagao
IPC: G06F3/041 , G09G3/36 , G06F3/047 , G06F3/044 , G06F1/3234
Abstract: In a liquid crystal display (LCD) device having a touch panel function, power consumption is reduced in the standby state. The display section is divided into blocks each of which is formed of a plurality of display lines. The counter electrode is disposed for each block. A driving circuit selectively supplies, to the counter electrode of each block, the voltage used for the liquid crystal display and the voltage used for the touch panel scanning. The driving circuit has a source amplifier that supplies the video voltages to the video lines. The driving circuit reduces the current in the source amplifier, such that the current is lower than current at the time of a normal operation, to lower the power consumption, and stops the operation of the source amplifier and supplies the GND voltage to the video lines to further lower the power consumption.
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