WO2012081222A1 - 電源回路およびそれを用いたディスプレイ装置 - Google Patents

電源回路およびそれを用いたディスプレイ装置 Download PDF

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Publication number
WO2012081222A1
WO2012081222A1 PCT/JP2011/006923 JP2011006923W WO2012081222A1 WO 2012081222 A1 WO2012081222 A1 WO 2012081222A1 JP 2011006923 W JP2011006923 W JP 2011006923W WO 2012081222 A1 WO2012081222 A1 WO 2012081222A1
Authority
WO
WIPO (PCT)
Prior art keywords
power supply
liquid crystal
supply circuit
light emitting
emitting diode
Prior art date
Application number
PCT/JP2011/006923
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
井ノ口　普之
Original Assignee
ローム株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ローム株式会社 filed Critical ローム株式会社
Priority to KR1020137017958A priority Critical patent/KR101935618B1/ko
Priority to CN201180059273.8A priority patent/CN103262147B/zh
Priority to JP2012548645A priority patent/JP5878129B2/ja
Publication of WO2012081222A1 publication Critical patent/WO2012081222A1/ja

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/3406—Control of illumination source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3685—Details of drivers for data electrodes
    • G09G3/3688—Details of drivers for data electrodes suitable for active matrices only
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/37—Converter circuits
    • H05B45/3725—Switched mode power supply [SMPS]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/46—Details of LED load circuits with an active control inside an LED matrix having LEDs disposed in parallel lines
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
    • G09G2330/02—Details of power systems and of start or stop of display operation

Definitions

  • the present invention relates to a driving technique for a liquid crystal panel.
  • FIG. 1 is a circuit diagram illustrating a configuration of a display device 1001 including a liquid crystal panel.
  • the liquid crystal panel 2 is disposed a plurality of data lines L D, a plurality of scan lines L S which are arranged perpendicular to the data line L D, the intersection of the data line L D and the scan line L S in a matrix And a plurality of pixel circuit TFTs (Thin Film Transistors).
  • TFTs Thin Film Transistors
  • an array or string of light emitting diodes (hereinafter referred to as an LED array) 8 is provided as a backlight.
  • the gate driver 4 selects a plurality of scan lines L S in order.
  • the LED drive circuit 1010 drives the LED array 8.
  • LED drive circuit 1010 is provided at one end of the LED array 8 (anode), a switching power supply 1012 for supplying a driving voltage V OUT1 of about 25V, the current driver 1014 for controlling a drive current flowing through the LED array 8, a.
  • Switching power supply 1020 supplies a drive voltage V OUT2 of about 10V to the source driver 6.
  • the current flowing through the LED array 8 is about 20 mA, and the current flowing through the source driver 6 is about 40 mA.
  • the drive current flowing through the LED array 8 is supplied from the switching power supply 1012, and the current flowing through the source driver 6 is supplied from the switching power supply 1020. Therefore, the current capability of each of the switching power supply 1012 and the switching power supply 1020 needs to be designed according to the current flowing through each of the LED array 8 and the source driver 6 that are loads. That is, two systems of switching power supplies having a driving capability of several tens of mA are required, and the system is complicated.
  • the present invention has been made in view of such a situation, and one of exemplary purposes of an aspect thereof is to simplify a liquid crystal panel drive system.
  • An aspect of the present invention relates to a power supply circuit that drives a light emitting diode array including at least one light emitting diode provided on the back surface of the liquid crystal panel and supplies power to a liquid crystal driver that drives the liquid crystal panel.
  • the liquid crystal driver and the light emitting diode array are stacked vertically so that the respective power supply currents flow in the same path.
  • the power supply circuit is provided on the path of the light emitting diode array, and supplies power between both ends of a current driver that generates a driving current and a load circuit formed by vertically stacking the light emitting diode array, the current driver, and the liquid crystal driver.
  • a first power supply circuit and a second power supply circuit that supplies power between both ends of the liquid crystal driver.
  • the load current of the second power supply circuit can be reduced as compared with the conventional system.
  • the second power supply circuit can be simplified.
  • the light emitting diode array includes a light emitting diode string including a plurality of light emitting diodes provided in series.
  • the anode of the light emitting diode string is one end of the load circuit, one end of the current driver is connected to the cathode of the light emitting diode string, and the other end of the current driver is connected to the upper power supply terminal of the liquid crystal driver.
  • the side power supply terminal is the other end of the load circuit and may be grounded.
  • the current driver may include a constant current circuit that is provided on the path of the light emitting diode string and generates a drive current corresponding to the target luminance of the light emitting diode string.
  • the first power supply circuit may include a switching regulator that stabilizes the voltage of the anode of the light-emitting diode string so that the voltage drop of the constant current circuit becomes a predetermined level.
  • the light emitting diode array may include a light emitting diode string including a plurality of light emitting diodes provided in series.
  • the current driver may include a resistor provided on the path of the light emitting diode string.
  • the first power supply circuit may include a switching regulator that generates a voltage of the anode of the light emitting diode array so that the voltage drop of the resistor becomes a predetermined level corresponding to the target value of the luminance of the light emitting diode string.
  • the second power supply circuit may include a charge pump circuit. In this case, the cost can be reduced compared to the case where a switching regulator is used.
  • the liquid crystal driver may be a source driver that drives the data lines of the liquid crystal panel.
  • the display device includes a liquid crystal panel, a light emitting diode array provided on a back surface of the liquid crystal panel, a liquid crystal driver that drives the liquid crystal panel, and a light emitting diode array that supplies power to the liquid crystal driver. And a power supply circuit of the aspect.
  • the liquid crystal panel drive system can be simplified.
  • the state in which the member A is connected to the member B means that the member A and the member B are physically directly connected, or the member A and the member B are in an electrically connected state. Including the case of being indirectly connected through other members that do not affect the above.
  • the state in which the member C is provided between the member A and the member B refers to the case where the member A and the member C or the member B and the member C are directly connected, as well as an electrical condition. It includes the case of being indirectly connected through another member that does not affect the connection state.
  • FIG. 2 is a circuit diagram showing a configuration of the display device 1 according to the embodiment.
  • the display device 1 includes a liquid crystal panel 2, a gate driver 4, a source driver 6, an LED array 8, and a power supply circuit 100.
  • the gate driver 4 selects a plurality of scan lines L S of the liquid crystal panel 2 in order.
  • the source driver 6, a source driver 6, the data line L D, and applies a driving voltage according to the brightness of a corresponding pixel.
  • the LED array 8 is disposed as a backlight on the back surface of the liquid crystal panel 2.
  • the LED array 8 includes a plurality of LED strings formed by connecting a plurality of LEDs in series. The anodes of the plurality of LED strings 8 1 to 8 n are connected in common.
  • the power supply circuit 100 drives the LED array 8 and supplies power to the source driver 6.
  • the source driver 6 and the LED array 8 are stacked vertically so that the respective power supply currents flow in the same path.
  • the power supply circuit 100 includes a current driver 16, a first power supply circuit 10, and a second power supply circuit 20.
  • Current drivers 16 1 to 16 n are provided for each of the LED strings 8 1 to 8 n .
  • i th current driver 16 i is provided on a path of a corresponding LED string 8 i, and generates a driving current IDRV i flowing through the LED string 8 i.
  • the LED array 8, the current driver 16, and the source driver 6 are stacked vertically to form the load circuit 7.
  • the commonly connected anode of the LED strings 8 1 to 8 n is one end P 1 of the load circuit 7.
  • One end of each of the plurality of current drivers 16 1 to 16 n is connected to the cathode of the corresponding LED string 8 1 to 8 n .
  • the other ends of the plurality of current drivers 16 1 to 16 n are connected in common and connected to the upper power supply terminal PVDD of the source driver 6.
  • the lower power supply terminal PVSS of the source driver 6 is the other end P2 of the load circuit 7 and is grounded.
  • the first power supply circuit 10 supplies power to both ends (P1-P2) of the load circuit 7. Specifically, the drive voltage V OUT1 is supplied to one end P1 of the load circuit 7.
  • the first power supply circuit 10 includes a switching regulator 12 and a control circuit 14. Since the topology of the switching regulator 12 is general, the description thereof is omitted.
  • the control circuit 14 adjusts the ON / OFF duty ratio of the switching transistor M1 of the switching regulator 12 by feedback to stabilize the anode voltage V OUT1 of the LED array 8.
  • the second power supply circuit 20 supplies power between both ends (PVDD-PVSS) of the source driver 6. Specifically, the potential V OUT2 of the upper power supply terminal PVDD of the source driver 6 is stabilized.
  • a voltage to be supplied between both ends of the LED array 8 and the current driver 16 is V 1
  • a voltage necessary for operating the source driver 6 is V 2 .
  • the current driver 16 i includes a constant current circuit that generates a drive current I DRVi according to the target luminance of the corresponding LED string 8 i .
  • the configuration of the constant current circuit is not particularly limited, and a known technique may be used.
  • the control circuit 14 adjusts the switching duty ratio of the switching transistor M1 of the switching regulator 12 so that the voltage across the current driver 16i matches a predetermined level.
  • the voltage across each of the plurality of current drivers 16 1 to 16 n may be monitored, and feedback control may be performed so that the lowest voltage among them matches a predetermined level. By this feedback, the voltage V OUT1 can be stabilized to a level at which the LED array 8 can emit light with a desired luminance.
  • the current driver 16 may be a resistor.
  • the control circuit 14 may stabilize the voltage V OUT1 at the anode of the LED array 8 so that the voltage drop of the resistor matches the target level corresponding to the luminance.
  • the second power supply circuit 20 is composed of, for example, a charge pump circuit or a combination of a charge pump circuit and a linear regulator. Alternatively, the second power supply circuit 20 may be a switching regulator similarly to the first power supply circuit 10.
  • the above is the configuration of the display device 1. Next, the operation will be described.
  • the drive current I DRV generated by the current driver 16 is adjusted by the control circuit 14, and the brightness of the LED array 8 is controlled.
  • This drive current I DRV is supplied from the first power supply circuit 10.
  • the drive current I DRV flowing through the LED array 8 flows into the upper power supply terminal PVDD of the source driver 6. That is, the drive current I DRV is used as a part of the operation current I DD of the source driver 6.
  • the driving current I DRV of the LED array 8 is supplied from the switching power supply 1012, and the operating current I DD of the source driver 6 is supplied from the switching power supply 1020.
  • the driving capacity of the switching power supply 1012 needs 20 mA
  • the driving capacity of the switching power supply 1020 needs 40 mA.
  • the drive capability of the first power supply circuit 10 is 20 mA, which is the same as the switching power supply 1012 of FIG.
  • the drive capability of the second power supply circuit 20 is sufficient at 20 mA, which is 1/2 of the switching power supply 1020 in FIG. That is, in the power supply circuit 100 of FIG. 2, the second power supply circuit 20 can be configured at low cost using a charge pump circuit or the like, and the entire system can be simplified. Even when the second power supply circuit 20 is configured using a switching regulator, there is an advantage that the size of the inductor and the switching transistor can be reduced as compared with the system of FIG.
  • the LED array 8 and the source driver 6 are stacked.
  • the LED array 8 and the gate driver 4 may be stacked, or the LED array 8 and the timing controller may be stacked.
  • FIG. 3 is a circuit diagram showing a configuration of the display device 1a according to the first modification.
  • the LED array 8 and the gate driver 4 are stacked, and the power supply circuit 100 a supplies a power supply voltage to the LED array 8 and the gate driver 4.
  • the power supply circuit 100a includes a third power supply circuit 22 in addition to the power supply circuit 100a of FIG.
  • the second power supply circuit 20 a generates the power supply voltage PVDD_G on the upper side of the gate driver 4.
  • the upper power supply voltage PVDD_G is about three times the upper power supply voltage PVDD_S of the source driver 6.
  • the third power supply circuit 22 generates a power supply voltage PVSS_G on the lower side of the gate driver 4.
  • the power supply voltage PVSS_G is a negative voltage ( ⁇ 2) times PVDD_S.
  • the second power supply circuit 20a may be a combination of a charge pump circuit and a linear regulator, or a switching regulator.
  • the third power supply circuit 22 may be composed of an inverting charge pump circuit that generates a negative voltage and a linear regulator.
  • FIG. 4 is a circuit diagram showing a configuration of the display device 1b according to the second modification.
  • the LED array 8 and the timing controller 5 are stacked, and the power supply circuit 100b is configured in the same manner as the power supply circuit 100 of FIG. 2, and power is supplied to the stacked LED array 8 and the timing controller 5.
  • a voltage PVDD_T is supplied.
  • the upper power supply voltage PVDD_T of the timing controller 5 is, for example, about 1.5V.
  • the timing controller 5 receives the video signal S1, outputs a synchronization signal to the gate driver 4, and outputs a synchronization signal and luminance data of each pixel to the source driver 6.
  • the gate driver 4 sequentially selects the plurality of scanning lines L S in synchronization with the synchronization signal from the timing controller 5.
  • the source driver 6 in synchronism with the synchronizing signal from the timing controller 5, the luminance data of each pixel by D / A conversion to generate a driving voltage is applied to the corresponding data line L D.
  • the stacking order of the load circuit 7 is not limited.
  • the source driver 6 gate driver, timing controller
  • the source driver 6 gate driver, timing controller
  • the LED array 8 is on the low potential side. You may arrange.
  • the present invention is not limited thereto.
  • a topology in which the configuration of FIG. 2 is inverted, the negative drive voltage is applied to one end of the load circuit 7 and the ground voltage is applied to the other end of the load circuit 7 is also included in the scope of the present invention.
  • the first power supply circuit 10 and the second power supply circuit 20 may be replaced with a negative power supply.
  • 1 Display device, 2 ... liquid crystal panel, L D ... data line, L S ... scan line, 4 ... gate driver, 6 ... source driver, 7 ... load circuit, 8 ... LED array, 10 ... first power supply circuit, 12 ... switching regulator, 14 ... control circuit, 16 ... current driver, 20 ... second power supply circuit, 100 ... power supply circuit.
  • the present invention can be used for a liquid crystal panel drive circuit.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Optics & Photonics (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
PCT/JP2011/006923 2010-12-13 2011-12-12 電源回路およびそれを用いたディスプレイ装置 WO2012081222A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020137017958A KR101935618B1 (ko) 2010-12-13 2011-12-12 전원 회로 및 그것을 이용한 디스플레이 장치
CN201180059273.8A CN103262147B (zh) 2010-12-13 2011-12-12 电源电路以及使用了该电源电路的显示器装置
JP2012548645A JP5878129B2 (ja) 2010-12-13 2011-12-12 電源回路およびそれを用いたディスプレイ装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2010-277362 2010-12-13
JP2010277362 2010-12-13

Publications (1)

Publication Number Publication Date
WO2012081222A1 true WO2012081222A1 (ja) 2012-06-21

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PCT/JP2011/006923 WO2012081222A1 (ja) 2010-12-13 2011-12-12 電源回路およびそれを用いたディスプレイ装置

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JP (1) JP5878129B2 (ko)
KR (1) KR101935618B1 (ko)
CN (1) CN103262147B (ko)
TW (1) TWI525366B (ko)
WO (1) WO2012081222A1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110097849A (zh) * 2018-01-30 2019-08-06 拉碧斯半导体株式会社 显示器驱动装置
JP2019215547A (ja) * 2019-07-11 2019-12-19 ラピスセミコンダクタ株式会社 ディスプレイ駆動装置
JPWO2020203974A1 (ko) * 2019-03-29 2020-10-08
WO2022249311A1 (ja) * 2021-05-26 2022-12-01 三菱電機株式会社 表示装置および表示方法

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JP2006292816A (ja) * 2005-04-06 2006-10-26 Au Optronics Corp 液晶ディスプレイ
JP2008287180A (ja) * 2007-05-21 2008-11-27 Toshiba Matsushita Display Technology Co Ltd 液晶表示装置
JP2010286809A (ja) * 2009-06-10 2010-12-24 Samsung Sdi Co Ltd 発光装置及びその駆動方法

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KR100878222B1 (ko) * 2001-07-03 2009-01-13 삼성전자주식회사 액정 표시 장치용 전원 공급 장치
JP3759133B2 (ja) 2003-08-29 2006-03-22 ローム株式会社 電源装置
US7427985B2 (en) * 2003-10-31 2008-09-23 Au Optronics Corp. Integrated circuit for driving liquid crystal display device
CN100419523C (zh) * 2004-11-19 2008-09-17 索尼株式会社 背光装置、驱动背光的方法、以及液晶显示设备
CN101561997B (zh) * 2008-04-18 2011-12-21 群康科技(深圳)有限公司 背光驱动电路、显示装置及背光驱动电路的驱动方法

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Publication number Priority date Publication date Assignee Title
JP2006292816A (ja) * 2005-04-06 2006-10-26 Au Optronics Corp 液晶ディスプレイ
JP2008287180A (ja) * 2007-05-21 2008-11-27 Toshiba Matsushita Display Technology Co Ltd 液晶表示装置
JP2010286809A (ja) * 2009-06-10 2010-12-24 Samsung Sdi Co Ltd 発光装置及びその駆動方法

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110097849A (zh) * 2018-01-30 2019-08-06 拉碧斯半导体株式会社 显示器驱动装置
JP2019132918A (ja) * 2018-01-30 2019-08-08 ラピスセミコンダクタ株式会社 ディスプレイ駆動装置
US10580357B2 (en) 2018-01-30 2020-03-03 Lapis Semiconductor Co., Ltd. Display driving device
US11011111B2 (en) 2018-01-30 2021-05-18 Lapis Semiconductor Co., Ltd. Display driving device
JPWO2020203974A1 (ko) * 2019-03-29 2020-10-08
WO2020203974A1 (ja) * 2019-03-29 2020-10-08 ラピスセミコンダクタ株式会社 ディスプレイ駆動装置
JP7385653B2 (ja) 2019-03-29 2023-11-22 ラピスセミコンダクタ株式会社 ディスプレイ駆動装置
JP2019215547A (ja) * 2019-07-11 2019-12-19 ラピスセミコンダクタ株式会社 ディスプレイ駆動装置
WO2022249311A1 (ja) * 2021-05-26 2022-12-01 三菱電機株式会社 表示装置および表示方法

Also Published As

Publication number Publication date
CN103262147A (zh) 2013-08-21
KR101935618B1 (ko) 2019-01-04
TWI525366B (zh) 2016-03-11
CN103262147B (zh) 2016-06-29
KR20140032966A (ko) 2014-03-17
TW201243432A (en) 2012-11-01
JPWO2012081222A1 (ja) 2014-05-22
JP5878129B2 (ja) 2016-03-08

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