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KR930011699U - Programmable logic controller Handy loader LCD display backlight automatic extinction circuit - Google Patents

Programmable logic controller Handy loader LCD display backlight automatic extinction circuit

Info

Publication number
KR930011699U
KR930011699U KR2019910019401U KR910019401U KR930011699U KR 930011699 U KR930011699 U KR 930011699U KR 2019910019401 U KR2019910019401 U KR 2019910019401U KR 910019401 U KR910019401 U KR 910019401U KR 930011699 U KR930011699 U KR 930011699U
Authority
KR
South Korea
Prior art keywords
programmable logic
logic controller
lcd display
display backlight
backlight automatic
Prior art date
Application number
KR2019910019401U
Other languages
Korean (ko)
Other versions
KR960001557Y1 (en
Inventor
박경록
Original Assignee
엘지산전 주식회사
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 엘지산전 주식회사 filed Critical 엘지산전 주식회사
Priority to KR2019910019401U priority Critical patent/KR960001557Y1/en
Publication of KR930011699U publication Critical patent/KR930011699U/en
Application granted granted Critical
Publication of KR960001557Y1 publication Critical patent/KR960001557Y1/en

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • 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
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133612—Electrical details

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Liquid Crystal (AREA)
KR2019910019401U 1991-11-14 1991-11-14 Lcd back light control circuit of plc handy loader KR960001557Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019910019401U KR960001557Y1 (en) 1991-11-14 1991-11-14 Lcd back light control circuit of plc handy loader

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019910019401U KR960001557Y1 (en) 1991-11-14 1991-11-14 Lcd back light control circuit of plc handy loader

Publications (2)

Publication Number Publication Date
KR930011699U true KR930011699U (en) 1993-06-25
KR960001557Y1 KR960001557Y1 (en) 1996-02-21

Family

ID=19322163

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2019910019401U KR960001557Y1 (en) 1991-11-14 1991-11-14 Lcd back light control circuit of plc handy loader

Country Status (1)

Country Link
KR (1) KR960001557Y1 (en)

Also Published As

Publication number Publication date
KR960001557Y1 (en) 1996-02-21

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Legal Events

Date Code Title Description
A201 Request for examination
N231 Notification of change of applicant
E701 Decision to grant or registration of patent right
REGI Registration of establishment
FPAY Annual fee payment

Payment date: 20001227

Year of fee payment: 6

LAPS Lapse due to unpaid annual fee