KR940011019B1 - Method of controlling contrast in a gas discharge panel - Google Patents

Method of controlling contrast in a gas discharge panel Download PDF

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Publication number
KR940011019B1
KR940011019B1 KR1019920004966A KR920004966A KR940011019B1 KR 940011019 B1 KR940011019 B1 KR 940011019B1 KR 1019920004966 A KR1019920004966 A KR 1019920004966A KR 920004966 A KR920004966 A KR 920004966A KR 940011019 B1 KR940011019 B1 KR 940011019B1
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KR
South Korea
Prior art keywords
electrode
gas discharge
discharge panel
pulse
brightness
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KR1019920004966A
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Korean (ko)
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KR930020338A (en
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김상철
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삼성전관 주식회사
박경팔
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Priority to KR1019920004966A priority Critical patent/KR940011019B1/en
Priority to JP5040232A priority patent/JPH07261702A/en
Priority to DE4309956A priority patent/DE4309956A1/en
Publication of KR930020338A publication Critical patent/KR930020338A/en
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Publication of KR940011019B1 publication Critical patent/KR940011019B1/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
    • G09G3/2007—Display of intermediate tones
    • G09G3/2077—Display of intermediate tones by a combination of two or more gradation control methods
    • G09G3/2081—Display of intermediate tones by a combination of two or more gradation control methods with combination of amplitude modulation and time modulation
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/288—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels
    • G09G3/291—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using AC panels controlling the gas discharge to control a cell condition, e.g. by means of specific pulse shapes
    • 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
    • G09G3/22—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 using controlled light sources
    • G09G3/28—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels
    • G09G3/282—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 using controlled light sources using luminous gas-discharge panels, e.g. plasma panels using DC panels

Abstract

The method improves the clear brightness difference of gray scale in gas discharge panel by transferring pulses in variable amplitudes to the first electrode. The method comprises (A) applying anode on-time period and anode on-time pulse to the anode; (B) controlling the brightness in the gas discharge panel.

Description

기체 방전 판넬의 휘도 조절 방법How to adjust the brightness of gas discharge panel

제 1a, b 도는 종래의 기체 방전 판넬의 휘도 조절 방법을 설명하기 위한 개념도를 나타내는 것이다.1A and 1B show conceptual diagrams for explaining a brightness control method of a conventional gas discharge panel.

제 2 도는 종래의 휘도 조절 방법을 설명하기 위한 타이밍도를 나타내는 것이다.2 is a timing diagram for explaining a conventional brightness control method.

제 3 도는 본 발명에 따른 기체 방전 판넬의 휘도 조절 방법을 설명하기 위한 개념도를 나타내는 것이다.3 is a conceptual diagram illustrating a method of adjusting the brightness of a gas discharge panel according to the present invention.

제 4 도는 본 발명에 따른 기체 방전 판넬의 휘도 제어 방법을 설명하기 위한 타이밍도를 나타내는 것이다.4 is a timing diagram for explaining the brightness control method of the gas discharge panel according to the present invention.

본 발명은 기체 방전 판넬의 구동방법에 관한 것으로, 특히 기체 방전 판넬의 휘도 제어 방법에 관한 것이다.The present invention relates to a method of driving a gas discharge panel, and more particularly to a method of controlling the brightness of a gas discharge panel.

종래의 기체 방전 판넬의 휘도 제어 방법은 애노우드 전압을 일정하게 하고 제한된 애노우드 온 타임 내에서 온 타임을 가변하여 휘도차를 발생시켜 그레이 스케일(GRAY SCALE)을 조절하였다.The brightness control method of the conventional gas discharge panel regulates the gray scale by making the anode voltage constant and varying the on time within the limited anode on time to generate the luminance difference.

제 1 도는 종래의 기체 방전 판넬의 휘도 조절 방법을 설명하기 위한 개념도를 나타내는 것이다.1 is a conceptual diagram illustrating a conventional method for adjusting luminance of a gas discharge panel.

제 1a 도에 있어서, 스위치(S1)이 단자(b)로 절환되어 애노우드가 온되고, 스위치(S2)가 절환되면 제 1b 도에 나타낸 것처럼, 기체 방전 판넬의 셀의 애노우드 전극에는 항상 일정한 전압(200V)가 인가되어 셀은 방전하여 빛을 발하게 된다, 즉, 애노우드가 온되는 시간만 가변하여 셀의 휘도차를 가변하여 그레이 스케일을 조정하였다.In FIG. 1A, the switch S1 is switched to the terminal b so that the anode is turned on, and when the switch S2 is switched, as shown in FIG. 1B, the anode electrode of the cell of the gas discharge panel is always constant. The voltage (200V) is applied to the cell to discharge the light, that is, only the time the anode is turned on by varying the brightness difference of the cell to adjust the gray scale.

제 2 도는 본 발명에 따른 기체 방전 판넬의 휘도 조절 방법을 설명하기 위한 타이밍도를 나타내는 것이다.2 is a timing diagram for explaining a brightness control method of the gas discharge panel according to the present invention.

제 2 도에 있어서, 입력되는 데이타가 4비트의 신호라고 가정하면, 수평 동기 신호(HSYNC)의 한 주기동안 0에서 16까지의 그레이 레벨에 해당하는 그레이 클럭을 발생시킨다. 상기 발생된 그레이 클럭에 따라서 애노우드 온 타임이 조절되어 휘도를 조정하였다. 그리고, 애노우드 온 타임 펄스의 진폭은 일정한 전압(70V)를 가진다.In FIG. 2, assuming that the input data is a 4-bit signal, a gray clock corresponding to gray levels from 0 to 16 is generated during one period of the horizontal synchronizing signal HSYNC. In accordance with the generated gray clock, the anode on time was adjusted to adjust the luminance. The amplitude of the anode on time pulse has a constant voltage (70V).

그런데, 종래의 방법으로 그레이 스케일을 조절하게 되면 휘도차가 설명하지 않고 고계조를 구현할 수가 없다.However, when the gray scale is adjusted by the conventional method, high gradation cannot be realized without explaining the luminance difference.

본 발명의 목적은 그레이 스케일의 휘도차가 선명한 기체 방전 판넬의 휘도 조절 방법을 제공하는데 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a brightness control method of a gas discharge panel having a clear brightness difference of gray scale.

이와같은 목적을 달성하기 위하여 본 발명에 따른 기체 방전 판넬의 휘도 조절 방법은 제 1 전극과 제 2 전극을 구비한 기체 방전 판넬의 휘도 조절 방법에 있어서, 상기 제 1전극의 데이타에 따른 제 1 전극 온 타임주기와 상기 제 1 전극 온 타임주기 동안 가변적인 진폭을 가진 펄스를 상기 제 1 전극에 인가하여 휘도를 조절하는 것을 특징으로 한다.In order to achieve the above object, the brightness control method of the gas discharge panel according to the present invention is a brightness control method of the gas discharge panel having a first electrode and a second electrode, the first electrode according to the data of the first electrode The luminance is adjusted by applying a pulse having a variable amplitude to the first electrode during an on time period and the first electrode on time period.

첨부된 도면을 참고로 하여 본 발명에 따른 기체 방전 판넬의 휘도 조절 방법을 설명하면 다음과 같다.Referring to the accompanying drawings, the brightness control method of the gas discharge panel according to the present invention will be described.

제 3 도는 본 발명에 따른 기체 방전 판넬의 휘도 조절 방법을 설명하기 위한 개념도를 나타내는 것이다.3 is a conceptual diagram illustrating a method of adjusting the brightness of a gas discharge panel according to the present invention.

제 3 도에 있어서, 스위치(S1)이 단자(b)로 절환되어 애노우드 전극이 온되고, 스위치(S2)가 절환되어 캐소우드 전극이 온되면 셀은 방전이 일어난다. 그런데, 애노우드 전극에 인가하는 전압은 하나의 수평동기 기간내에 최소 방전 개시전압으로부터 선형적으로 증가하는 전압을 인가한다고 한다. 여기에서, 최소 전압은 70V라고 하고, 최대 전압은 120V라고 한다.In FIG. 3, when the switch S1 is switched to the terminal b to turn on the anode electrode, and the switch S2 is switched to turn on the cathode electrode, the cell is discharged. However, the voltage applied to the anode electrode is said to apply a voltage that increases linearly from the minimum discharge start voltage within one horizontal synchronizing period. Here, the minimum voltage is 70V and the maximum voltage is 120V.

제 4 도는 본 발명에 따른 기체 방전 판넬의 휘도 조절 방법을 설명하기 위한 타이밍도를 나타내는 것이다.4 is a timing diagram for explaining a brightness control method of the gas discharge panel according to the present invention.

제 4 도에 있어서, 입력되는 데이타가 4비트의 신호라고 가정하고 애노우드 전극에 인가되는 전압이 수평동기 신호 기간내에 70V에서 120V로 선형적으로 증가한다고 한다. 이와같이 하면 그레이 레벨은 제 2 도에 나타낸 그레이 레벨과는 달리 진폭에 따른 휘도차가 추가적으로 판넬에 나타나게 되어 휘도차가 더욱 선명하게 나타나게 된다. 또한 고계조의 실현이 가능하게 된다.In FIG. 4, it is assumed that the input data is a 4-bit signal and the voltage applied to the anode electrode increases linearly from 70V to 120V within the horizontal synchronization signal period. In this way, unlike the gray level shown in FIG. 2, the gray level is further shown by the luminance difference depending on the amplitude on the panel, so that the luminance difference is more clearly displayed. In addition, high gradation can be realized.

따라서, 본 발명은 디스플레이의 질을 향상시킬 수 있다. 또한, 본 발명의 방법을 이용함으로써 다계조의 구현이 가능하다.Therefore, the present invention can improve the quality of the display. In addition, the multi-gradation can be implemented by using the method of the present invention.

Claims (6)

제 1 전극과 제 2 전극을 구비한 기체 방전 판넬의 휘도 조절 방법에 있어서, 상기 제 1 전극의 데이타에 따른 제 1 전극 온 타임주기와 상기 제 1 전극 온 타임주기 동안 가변적인 진폭을 가진 펄스를 상기 제 1 전극에 인가하여 휘도를 조절하는 것을 특징으로 하는 기체 방전 판넬의 휘도 조절 방법.In the brightness control method of the gas discharge panel having a first electrode and a second electrode, a pulse having a variable amplitude during the first electrode on time period and the first electrode on time period according to the data of the first electrode The brightness control method of the gas discharge panel, characterized in that for applying to the first electrode to adjust the brightness. 제 1 항에 있어서, 상기 펄스의 진폭은 최소 방전 개시 전압보다 큰 것을 특징으로 하는 기체 방전 판넬의 휘도 조절 방법.The method of claim 1, wherein the amplitude of the pulse is greater than a minimum discharge start voltage. 제 1 항에 있어서, 상기 펄스의 진폭은 상기 제 1 전극 온 타임 기간의 최대 기간내에서 점차적으로 증가하는 것을 특징으로 하는 기체 방전 판넬의 휘도 조절 방법.The method of claim 1, wherein the amplitude of the pulse is gradually increased within a maximum period of the first electrode on time period. 제 1 항에 있어서, 상기 제 1 전극에 인가되는 펄스는 톱니파인 것을 특징으로 하는 기체 방전 판넬의 휘도 조절 방법.The method of claim 1, wherein the pulse applied to the first electrode is a sawtooth wave. 제 1 전극과 제 2 전극을 가진 N×M개의 기체 방전 셀들이 매트릭스로 배열된 기체 방전 판넬의 휘도 조절 방법에 있어서, 상기 N행의 하나의 제 1 전극들이 선택되는 기간동안 선형적으로 증가하는 진폭을 가지고 상기 M개의 제 2 전극에 표시될 데이타에 해당하는 주기를 가진 펄스를 상기 N행의 하나의 제 1 전극들이 선택되는 기간동안 상기 M개의 제 2 전극에 인가하여 휘도를 조절하는 것을 특징으로 하는 기체 방전판넬의 휘도 조절 방법.A method for adjusting the brightness of a gas discharge panel in which N × M gas discharge cells having a first electrode and a second electrode are arranged in a matrix, the linear increase in the period during which one first electrodes in the N rows are selected. A pulse having an amplitude and having a period corresponding to data to be displayed on the M second electrodes is applied to the M second electrodes during a period in which one first electrodes of the N rows are selected to adjust luminance. The brightness control method of the gas discharge panel. 제 5 항에 있어서, 상기 펄스는 톱니파인 것을 특징으로 하는 기체 방전 판넬의 휘도 조절 방법.6. The method of claim 5, wherein the pulse is a sawtooth wave.
KR1019920004966A 1992-03-26 1992-03-26 Method of controlling contrast in a gas discharge panel KR940011019B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1019920004966A KR940011019B1 (en) 1992-03-26 1992-03-26 Method of controlling contrast in a gas discharge panel
JP5040232A JPH07261702A (en) 1992-03-26 1993-03-01 Luminance adjusting method for gas discharge display panel
DE4309956A DE4309956A1 (en) 1992-03-26 1993-03-26 Controlling of gray scale in gas discharge panels - subjecting anode of panel to pulses with variable amplitude to control luminance differential

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Application Number Priority Date Filing Date Title
KR1019920004966A KR940011019B1 (en) 1992-03-26 1992-03-26 Method of controlling contrast in a gas discharge panel

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KR930020338A KR930020338A (en) 1993-10-19
KR940011019B1 true KR940011019B1 (en) 1994-11-22

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JP4610720B2 (en) * 2000-11-21 2011-01-12 株式会社日立製作所 Plasma display device
DE10127132A1 (en) * 2001-06-05 2003-01-09 Grundig Ag Process for the display of gamma pre distorted RGB signals for a plasma screen display

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