KR910002290Y1 - Liquid crystal driving circuit - Google Patents

Liquid crystal driving circuit Download PDF

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Publication number
KR910002290Y1
KR910002290Y1 KR2019880004371U KR880004371U KR910002290Y1 KR 910002290 Y1 KR910002290 Y1 KR 910002290Y1 KR 2019880004371 U KR2019880004371 U KR 2019880004371U KR 880004371 U KR880004371 U KR 880004371U KR 910002290 Y1 KR910002290 Y1 KR 910002290Y1
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KR
South Korea
Prior art keywords
liquid crystal
square waveform
crystal panel
voltage
basic
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Application number
KR2019880004371U
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Korean (ko)
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KR890019705U (en
Inventor
이길구
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삼성전관 주식회사
김정배
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Priority to KR2019880004371U priority Critical patent/KR910002290Y1/en
Publication of KR890019705U publication Critical patent/KR890019705U/en
Application granted granted Critical
Publication of KR910002290Y1 publication Critical patent/KR910002290Y1/en

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    • 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
    • G09G3/3614—Control of polarity reversal in general
    • 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
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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

Abstract

내용 없음.No content.

Description

액정 판넬 구동회로LCD panel driving circuit

제1도는 본 고안에 따른 액정 판넬 구동회로의 블록도.1 is a block diagram of a liquid crystal panel driving circuit according to the present invention.

제2도는 제1도의 전압 조정부를 일 실시예로 나타낸 상세 회로도.FIG. 2 is a detailed circuit diagram illustrating an example of the voltage adjusting unit of FIG. 1.

제3도는 제1도의 주요 부분에서 출력되는 신호의 파형도.3 is a waveform diagram of signals output from the main part of FIG.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

10 : 발진부 20 : 반전부10: oscillation part 20: inversion part

30 : 전압 조정부 31 : 콘덴서30: voltage adjusting unit 31: capacitor

32 : 가변 저항32: variable resistor

본 고안은 생산된 액정 판넬을 구동하기 위하여 필요한 전압을 조정하여 공급시키는 액정 판넬 구동회로에 관한 것이다.The present invention relates to a liquid crystal panel driving circuit for adjusting and supplying a voltage necessary for driving the produced liquid crystal panel.

일반적으로, 액정판넬을 자체를 동작시키는 구동전압과, 숫자와 기호를 표시하기 위한 디스플레이용 데이터를 인가하므로써 입력 데이터에 따라 문자를 디스플레이한다.In general, a character is displayed in accordance with input data by applying a driving voltage for operating the liquid crystal panel itself and display data for displaying numerals and symbols.

이러한 액정판넬이 생산되면 ITO 전극 패턴이 제품 설계 규격에 일치하도록 만들어져 있는 가에 대한 시험 즉, 전기적 특성검사를 하게 되는데, 액정 패널의 구동전압을 공급하기 위한 종래의 특성 검사장치는 많은 회로소자를 이용하여 구성하였기 때문에 복잡한 구조에 따른 생산단가의 상승요인으로 작용하는 결점이 있었다.When such a liquid crystal panel is produced, a test is performed on whether an ITO electrode pattern is made to conform to a product design standard, that is, an electrical characteristic test is performed. Because of this structure, there was a defect that acts as an increase factor of the production cost due to the complicated structure.

따라서, 본 고안은, 상기한 결점을 해결하기 위해, 세그먼트 및 도트형의 모든 액정판넬에 구동전압을 공급하여 시험하는 전기적인 특성검사를 간단한 회로로도 가능하게 하는 액정판넬 구동회로를 제공하는데 그 목적이 있다.Accordingly, the present invention provides a liquid crystal panel driving circuit which enables a simple circuit to perform electrical characteristic tests for supplying and testing driving voltages to all liquid crystal panels of segment and dot type in order to solve the above-described drawbacks. There is a purpose.

본 고안은 기본구형파형을 발생시키는 발진부와 이 기본구형파형을 반전시켜 반전구형파형을 출력하는 반전부 및, 기본구형파형과 반전구형파형을 조합해서 회로의 로직(Logic)용 5볼트 전압으로부터 10볼트 전압의 레벨까지 조정할 수 있는 전압 조정부로 구성되어 있음을 특징으로 하고 있다.The present invention combines an oscillator that generates a fundamental square waveform, an inverter that inverts the basic square waveform and outputs an inverted square waveform, and a combination of the basic square waveform and the inverted square waveform to a voltage of 5 volts for logic of the circuit. It is characterized by consisting of a voltage adjuster that can adjust the level of the volts voltage.

다음은 첨부도면에 의거하여 본 고안의 실시예를 상세히 설명한다.Next will be described in detail an embodiment of the present invention based on the accompanying drawings.

본 고안에 따른 액정 패널 구동회로의 블록도가 제1도에 도시되어 있다.A block diagram of the liquid crystal panel driving circuit according to the present invention is shown in FIG.

제1도에서, 액정판넬을 교류 구동시키기 위해 요구되는 기본구형파형은 발진부(10)에서 출력되고, 이 파형은 반전부(20)에 의해 반전구형파형으로 변환된다.In FIG. 1, the basic square waveform required for alternatingly driving the liquid crystal panel is output from the oscillator 10, and this waveform is converted into the inverted square waveform by the inverting portion 20. In FIG.

이와 같이, 제3도(A)와 (B)로 각각 출력되는 기본구형파형과 반전구형파형은 전압조정부(30)에 의해 감산되어서 액정판넬에 공급된다.In this way, the basic square waveforms and the inverted square waveforms respectively output to FIGS. 3A and 3B are subtracted by the voltage adjusting unit 30 and supplied to the liquid crystal panel.

즉, 전압조정부(30)에서는 기본구형파형(제3도의 A)을 반전구형파형(제3도의 B)로 뺀 신호 (제3도의 C)가 출력되는데, 이 신호는 O볼트 전압에서 기본구형파형-반전구형파형의 전압까지 조정되어 액정판넬에 인가된다.That is, the voltage adjusting unit 30 outputs a signal obtained by subtracting the basic square waveform (A in FIG. 3) by the inverted square waveform (B in FIG. 3) (C in FIG. 3). -The voltage of the inverted waveform is adjusted and applied to the liquid crystal panel.

이러한 두 신호의 감산을 수행하는 수단인 전압조정부는 실시예로서 제2도에 예시되는 상세회로도와 같이, 콘덴서(31)와 가변저항(32)을 병렬로 연결하고, 이 회로소자의 양단에는 기본구형파형 및 반전구형파형이 각각 인가되게 접속되어 있으며, 가변저항(32)의 중간단자와 일단에서 공급되는 전압은 액정판넬에 제공되도록 구성한다.The voltage adjusting section, which is a means for performing subtraction of these two signals, connects the capacitor 31 and the variable resistor 32 in parallel, as shown in the detailed circuit diagram shown in FIG. The square waveform and the inverted square waveform are connected to each other, and the voltage supplied from the intermediate terminal and one end of the variable resistor 32 is configured to be provided to the liquid crystal panel.

상기 콘덴서(31)는 가변저항(32) 양단에 안정된 파형이 인가되도록 접속하였다.The capacitor 31 was connected so that a stable waveform was applied to both ends of the variable resistor 32.

이와같이, 본 고안에 의하면 액정 판넬 구동회로를 간단하게 구성하므로서, 저렴한 가격으로 액정판넬 구동회로를 생산할 수 있고, 또한 전기적 특성 검사용 액정판넬의 구동전압을 조정하여 발생시킬 수 있다.As described above, according to the present invention, the liquid crystal panel driving circuit can be easily manufactured, and the liquid crystal panel driving circuit can be produced at a low price, and can be generated by adjusting the driving voltage of the liquid crystal panel for the electrical property inspection.

Claims (2)

액정판넬을 교류 구동시키기 위한 신호를 제공하는 회로에 있어서, 기본구형파형을 발생시키는 발진부(10)와 상기의 기본구형파형을 반전시켜 반전구형파형을 출력하는 반전부(20)와, 상기의 기본구형파형과 반전구형파형을 조합하여 소정의 전압 레벨까지 가변하여 출력시키는 전압조정부(30)로 구성되어, 전압조정부의 출력전압을 액정판넬의 구동단자에 제공함을 특징으로 하는 액정 패널 구동회로.In a circuit for providing a signal for alternatingly driving a liquid crystal panel, an oscillator 10 for generating a basic square waveform and an inverting portion 20 for inverting the basic square waveform to output an inverted square waveform, and the basic And a voltage adjusting unit (30) which combines a square waveform and an inverted square waveform to a predetermined voltage level, and outputs the voltage to the driving terminal of the liquid crystal panel. 제1항에 있어서, 전압 조정부는, 콘덴서(31)와 가변저항(32)을 병렬로 접속하고, 접속점의 양단에 기본 구형파형과 반전구형파형이 각각 인가되게 접속하여 가변저항(32)의 중간단자와 일단에서 공급되는 전압이 액정판넬에 제공되게 접속한 것을 특징으로 하는 액정 판넬 구동회로.2. The voltage adjusting unit according to claim 1, wherein the voltage adjusting unit connects the capacitor 31 and the variable resistor 32 in parallel, and connects the basic square waveform and the inverted square waveform to both ends of the connection point so as to apply the intermediate portion of the variable resistor 32. A liquid crystal panel drive circuit comprising a terminal and a voltage supplied from one end thereof connected to provide the liquid crystal panel.
KR2019880004371U 1988-03-30 1988-03-30 Liquid crystal driving circuit KR910002290Y1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2019880004371U KR910002290Y1 (en) 1988-03-30 1988-03-30 Liquid crystal driving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2019880004371U KR910002290Y1 (en) 1988-03-30 1988-03-30 Liquid crystal driving circuit

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KR890019705U KR890019705U (en) 1989-10-05
KR910002290Y1 true KR910002290Y1 (en) 1991-04-06

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KR2019880004371U KR910002290Y1 (en) 1988-03-30 1988-03-30 Liquid crystal driving circuit

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KR890019705U (en) 1989-10-05

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