KR100262334B1 - Driving method of ac plasma display panel - Google Patents

Driving method of ac plasma display panel Download PDF

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KR100262334B1
KR100262334B1 KR1019970048939A KR19970048939A KR100262334B1 KR 100262334 B1 KR100262334 B1 KR 100262334B1 KR 1019970048939 A KR1019970048939 A KR 1019970048939A KR 19970048939 A KR19970048939 A KR 19970048939A KR 100262334 B1 KR100262334 B1 KR 100262334B1
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South Korea
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sustain
pulse
period
plasma display
subfields
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KR1019970048939A
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Korean (ko)
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KR19990026696A (en
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배광배
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김영남
오리온전기주식회사
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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
    • G09G3/22—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
    • G09G3/294—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 for lighting or sustain discharge
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00—Command of the display device
    • G09G2310/06—Details of flat display driving waveforms
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0247—Flicker reduction other than flicker reduction circuits used for single beam cathode-ray tubes

Abstract

PURPOSE: A method for driving an alternation type plasma display panel is provided to adjust the first sustain pulse for each sub field in an address display period separated to prevent malfunction during the sustaining period. CONSTITUTION: The method including X sustain electrodes and Y sustain electrodes. Address period allocates at least one cell to be indicated with response to an input signal out of a plurality of sub fields. The sustain-discharge period applies the sustain pulses so as to turn on and sustain the cells indicated during the address period. During at least one sustain-discharge period of the sub fields, the pulse width of the first sustain pulse and the pulse width of the second sustain pulse are determined differently. The pulse width of the first sustain pulse is determined to be wider than that of the latter sustain pulses.

Description

교류형 플라즈마 표시패널 구동방법AC Plasma Display Panel Driving Method

본 발명은 교류형 플라즈마 표시패널 구동방법에 관한 것으로, 보다 상세하게는 ADS(Address Display Period Separated) 서브 필드방식에 따른 구동시 각 서브 필드당 유지(sustain)동작에서의 오동작을 방지하도록 한 교류형 플라즈마 표시패널 구동방법에 관한 것이다.The present invention relates to a method of driving an AC plasma display panel, and more particularly, an AC type which prevents a malfunction in a sustain operation for each subfield when driving according to an ADS (Address Display Period Separated) subfield method. The present invention relates to a plasma display panel driving method.

일반적으로, 플라즈마 표시패널(Plasma Display Panel)은 기체방전시 생기는 플라즈마로부터 나오는 빛을 이용하여 문자 또는 그래픽을 표시하는 소자로서, 플라즈마를 만들기 위해 외부에서 가해주는 전계 인가 구동방법에 의하여 직류형 또는 교류형으로 구분된다.In general, a plasma display panel is a device that displays characters or graphics by using light emitted from a plasma generated during gas discharge. The plasma display panel is a direct current type or alternating current by an electric field application driving method applied externally to make a plasma. Are divided into types.

상기 교류형 플라즈마 표시패널의 구동방식으로는 ADS 서브 필드(Address Display Period Separated sub-field)방식이 주로 채용되는데, 그 ADS 서브 필드방식은 전체 패널의 디스플레이 전극(즉, X 유지 전극과 Y 유지 전극) 사이에 방전을 동시에 일으켜서 벽전위를 형성시키는 일종의 프라이밍(pliming) 작용을 통하여 선택펄스의 전압을 감소시키고 어드레스 속도를 증가시켜서 소정의(예컨대, 256) 계조 표시를 가능하게 만들어 주는 구동방식으로서, 낮은 전압에서 선택동작을 할 수 있게 만들어 주는 데 그 핵심이 있다.As the driving method of the AC plasma display panel, an ADS sub-field method is mainly adopted. The ADS sub-field method uses display electrodes (ie, X sustain electrodes and Y sustain electrodes) of the entire panel. As a driving method that makes a predetermined (e.g., 256) gradation display by decreasing the voltage of the selection pulse and increasing the address speed through a kind of priming action that simultaneously forms a discharge between the two to form a wall potential. The key is to make the selection work at low voltages.

즉, 제1도 및 제2도를 참조하여 종래의 ADS 서브 필드방식에 대해 보다 설명하면, 제1도에 예시된 바와 같이 각 서브 필드(SF1∼SF8)에서 한 스캔 라인이 어드레싱(addressing)되면 그 라인은 나머지 라인들이 어드레싱될 때까지 기다리다가 마지막 라인이 스캔(scan)되고 나면 동시에 모든 라인들이 제2도에서와 같이 동일한 인가전압과 펄스폭으로 유지(sustain)를 하게 된다.That is, the conventional ADS subfield method will be described in more detail with reference to FIGS. 1 and 2, when one scan line is addressed in each subfield SF1 to SF8 as illustrated in FIG. 1. The line waits for the remaining lines to be addressed, and then once the last line is scanned, all lines are maintained at the same applied voltage and pulse width as in FIG.

다시 말해서, 첫번째 스캔 라인(1 라인)이 어드레싱되고 나면 마지막 스캔라인(480 라인)이 어드레싱될 때까지 첫번째 스캔라인(1라인) 어드레싱에 의해 형성된 벽전하는 스캔라인당 3μsec 정도의 시간을 적용할 경우 각 서브 필드당 1.44msec(3μsec×480)시간동안 대기한 후에 유지(sustain)를 실행하게 된다.In other words, after the first scan line (one line) is addressed, the wall charge formed by addressing the first scan line (one line) until the last scan line (480 lines) is addressed applies a time of about 3 μsec per scan line. Sustain is executed after waiting for 1.44 msec (3 μsec x 480) time for each subfield.

그런데, 상술한 종래의 ADS 서브 필드방식의 경우 유지시 전체적으로 동일한 펄스폭(α)을 인가하게 되면 마지막 스캔에서의 어드레싱에 의해 형성된 벽전하에 비해 첫번째 스캔에서의 어드레싱에 의해 형성된 벽전하가 불안정하게 동작하게 되고, 결국 각 서브 필드당 유지동작이 불안정하게 되어 오동작을 일으키게 된다.However, in the case of the conventional ADS subfield method described above, when the same pulse width? Is applied to the entire sustain, the wall charges formed by the addressing in the first scan are unstable compared to the wall charges formed by the addressing in the last scan. As a result, the holding operation for each subfield becomes unstable and causes a malfunction.

따라서 본 발명은 상술한 종래의 문제점을 해결하기 위해 이루어진 것으로, ADS 서브 필드방식에 있어 각 서브 필드당 유지시 첫번째 유지펄스를 조정함으로써 유지시에 발생되는 오동작을 방지하도록 한 교류형 플라즈마 표시패널 구동방법을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above-mentioned conventional problems. In the ADS subfield method, an AC plasma display panel is driven so as to prevent a malfunction occurring during holding by adjusting the first holding pulse during holding for each subfield. The purpose is to provide a method.

상기한 목적을 달성하기 위해 본 발명의 바람직한 제 1실시예에 따르면, 한 프레임을 다수개의 서브 필드로 나누어 전체 패널의 X 유지전극과 Y 유지전극으로 이루어진 디스플레이 전극사이에 방전을 동시에 일으켜서 계조표시를 행하는 어드레스 디스플레이 분리 표시방법이 채용된 교류형 플라즈마 표시패널의 구동방법에 있어서, 상기 다수개의 서브 필드들중 적어도 하나가 입력되는 신호에 따라 표시해야 할 셀을 지정하기 위한 어드레스 기간 및 상기 어드레스 기간에서 지정된 셀들을 점등, 유지하기 위해 유지펄스들을 인가하는 유지방전기간을 포함하며, 상기 다수개의 서브필드들중 적어도 하나의 유지방전기간에서, 첫번째 유지펄스의 펄스폭과 이후의 유지펄스의 펄스폭을 차등적으로 설정하는 것을 특징으로 하는 교류형 플라즈마 표시패널 구동방법이 제공된다.In order to achieve the above object, according to a first embodiment of the present invention, one frame is divided into a plurality of subfields to simultaneously generate a discharge between the display electrodes including the X sustain electrodes and the Y sustain electrodes of the entire panel, thereby providing gray scale display. A method of driving an AC plasma display panel employing an address display separation display method, wherein at least one of the plurality of subfields is specified in an address period for specifying a cell to be displayed in accordance with an input signal and in the address period. And a sustain discharge period for applying sustain pulses to light up and sustain the specified cells, wherein in the sustain discharge period of at least one of the plurality of subfields, a pulse width of the first sustain pulse and a pulse width of a subsequent sustain pulse are determined. AC plasma display panel characterized in that the differential setting The driving method is provided.

그리고, 본 발명의 제 2실시예에 따르면, 한 프레임을 다수개의 서브 필듣로 나누어 전체 패널의 X유지전극과 Y유지전극으로 이루어진 디스플레이 전극사이에 방전을 동시에 일으켜서 계조표시를 행하는 어드레스 디스플레이 표시방법이 채용된 교류형 플라즈마 표시패널의 구동방법에 있어서, 상기 다수개의 서브필드들중 적어도 하나가 입력되는 신호에 따라 표시해야할 셀을 지정하기 위한 어드레스 기간 및 상기 어드레스 기간에서 지정된 셀들을 점등, 유지하기 위해 유지펄스들을 인가하는 유지방전기간을 포함하며, 상기 다수개의 서브필드들중 적어도 하나의 유지방전기간에서, 첫번째 유지펄스의 인가전압과 이후의 유지펄스의 인가전압을 상호 차등적으로 설정하는 것을 특징으로 하는 교류형 플라즈마 표시패널 구동방법이 제공된다.In addition, according to the second embodiment of the present invention, an address display display method for dividing a frame into a plurality of subfields and simultaneously generating discharge between display electrodes made of X holding electrodes and Y holding electrodes of the entire panel to perform gradation display is performed. A method of driving an alternating current plasma display panel, comprising: an address period for designating a cell to be displayed in accordance with an input signal and at least one of the plurality of subfields; And a sustain discharge period for applying sustain pulses, wherein in the at least one sustain discharge period of the plurality of subfields, an applied voltage of a first sustain pulse and an applied voltage of a subsequent sustain pulse are differentially set. An AC plasma display panel driving method is provided.

제1도는 일반적인 계조표시를 위한 서브 필드에 의한 구동 타이밍도.1 is a driving timing diagram by sub-fields for general gray scale display.

제2도는 제1도에 도시된 임의의 한 서브 필드에서의 구동파형도.2 is a drive waveform diagram in any one subfield shown in FIG.

제3도는 본 발명의 제 1실시예에 따른 교류형 플라즈마 표시패널 구동파형도.3 is a driving waveform diagram of an AC plasma display panel according to a first embodiment of the present invention.

제4도는 본 발명의 제 2실시예에 따른 교류형 플라즈마 표시패널 구동파형도이다.4 is a driving waveform diagram of an AC plasma display panel according to a second exemplary embodiment of the present invention.

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

10 : 첫번째 유지펄스 12 : 두번째 유지펄스10: first holding pulse 12: second holding pulse

이하, 본 발명의 실시예에 대해 첨부된 도면을 참조하여 보다 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명의 제 1실시예에 따른 교류형 플라즈마 표시패널 구동방법에 대해 제3도의 구동파형도를 참조하여 설명하면 다음과 같다.The AC plasma display panel driving method according to the first embodiment of the present invention will be described with reference to the driving waveform diagram of FIG. 3.

먼저, 본 발명의 제 1실시예에서는 각 서브 필드(SF1∼SF8)당 유지펄스의 인가전압이 상호 동일한 것으로 상정하고 설명한다.First, in the first embodiment of the present invention, it is assumed that the applied voltages of the sustain pulses for each subfield SF1 to SF8 are the same.

각 서브 필드(SF1∼SF8)에서 한 스캔라인씩 어드레싱해 나간 후 유지동작을 수행할 때 첫번째 유지펄스(10)의 펄스폭(β)을 나머지 두번째 이하의 유지펄스(12, ···)의 펄스폭(α)보다 큰값(즉, 넓게; 8μsec 이상)으로 조정하여 출력시킴으로써, 첫번째 스캔라인에 의해 형성되어 장기간 대기로 인한 불안정한 벽전하를 안정하게 턴온시키게 된다.When the sustain operation is performed after addressing one scan line in each subfield SF1 to SF8, the pulse width? Of the first sustain pulse 10 is set to the remaining second or less of the sustain pulses 12,... By adjusting and outputting a value larger than the pulse width α (ie, wider than 8 μsec), the first scan line is formed to stably turn on the unstable wall charge due to the long-term atmosphere.

그리고, 본 발명의 제 2실시예에 따른 교류형 플라즈마 표시패널 구동방법에 대해 제4도의 구동파형도를 참조하여 설명하면 다음과 같다.The AC plasma display panel driving method according to the second embodiment of the present invention will be described with reference to the driving waveform diagram of FIG. 4 as follows.

먼저, 본 발명의 제 2실시예에서는 각 서브 필드(SF1∼SF8)당 유지펄스폭이 상호 동일하다고 상정하고 설명한다.First, in the second embodiment of the present invention, it is assumed that the sustain pulse widths for each subfield SF1 to SF8 are the same.

각 서브 필드(SF1∼SF8)에서 한 스캔라인씩 어드레싱해 나간 후 유지동작을 수행할 때 첫번째 유지펄스(10)의 인가전압치(k)를 나머지 두번째 이하 유지펄스(12, ···)의 인가전압치(p)보다 높고 전화면 기입전압치(t)보다 낮게 조정하여 출력시킴으로써, 첫번째 스캔라인에 의해 형성되어 장기간 대기로 인한 불안정한 벽전하를 안정하게 턴온시키게 된다.When the sustain operation is performed after addressing one scan line in each subfield SF1 to SF8, the applied voltage value k of the first sustain pulse 10 is set to the remaining second or less sustain pulses 12,... By adjusting the output voltage higher than the applied voltage value p and lower than the full-screen write voltage value t, the wall is formed by the first scan line to stably turn on the unstable wall charge due to the long-term atmosphere.

이상 설명한 바와 같은 본 발명에 의하면, ADS 서브 필드 구동방식에 있어서 각 서브 필드당 유지시 첫번째 유지펄스의 펄스폭 또는 인가전압을 두번째 이하 마지막 유지펄스의 펄스폭 또는 인가전압에 비해 넓게 또는 높게 인가시킴으로써, 장기간 대기로 인한 불안정한 벽전하를 안정되게 턴온시킬 수 있게 되고 그로 인해 각 서브 필드당 유지시 오동작을 방지할 수 있게 된다.According to the present invention as described above, in the ADS sub-field driving method, by applying the pulse width or the applied voltage of the first sustaining pulse at each subfield in a wider or higher than the pulse width or the applied voltage of the second or less last sustaining pulse. As a result, it is possible to stably turn on the unstable wall charges caused by the atmosphere for a long period of time, thereby preventing malfunctions during maintenance for each subfield.

한편 본 발명은 상술한 실시예로만 한정되는 것이 아니라 본 발명의 요지를 벗어나지 않는 범위내에서 수정 및 변형하여 실시할 수 있다.On the other hand, the present invention is not limited only to the above-described embodiments, but may be modified and modified without departing from the scope of the present invention.

Claims (5)

한 프레임을 다수개의 서브 필드로 나누어 전체 패널의 X유지전극과 Y유지전극으로 이루어진 디스플레이 전극사이에 방전을 동시에 일으켜서 계조표시를 행하는 어드레스 디스플레이 분리 표시방법이 채용된 교류형 플라즈마 표시패널의 구동방법에 있어서, 상기 다수개의 서브 필드들중 적어도 하나가 입력되는 신호에 따라 표시해야 할 셀을 지정하기 위한 어드레스 기간 및 상기 어드레스 기간에서 지정된 셀들을 점등, 유지하기 위해 유지펄스들을 인가하는 유지방전기간을 포함하며, 상기 다수개의 서브필드들중 적어도 하나의 유지방전기간에서, 첫번째 유지펄스의 펄스폭과 이후의 유지펄스의 펄스폭을 차등적으로 설정하는 것을 특징으로 하는 교류형 플라즈마 표시패널 구동방법.A method of driving an AC plasma display panel employing an address display separation display method in which a frame is divided into a plurality of subfields and a gray scale is displayed by simultaneously discharging between display electrodes composed of X and Y sustain electrodes of an entire panel. And a sustain period during which at least one of the plurality of subfields specifies a cell to be displayed according to an input signal, and a sustain discharge period for applying sustain pulses to turn on and sustain the cells specified in the address period. And in the sustain discharge period of at least one of the plurality of subfields, differentially sets a pulse width of a first sustain pulse and a pulse width of a subsequent sustain pulse. 제1항에 있어서, 상기 첫번째 유지펄스의 펄스폭은 이후의 유지펄스의 펄스폭보다 넓게 설정되는 것을 특징으로 하는 교류형 플라즈마 표시패널 구동방법.The method of driving an alternating current plasma display panel according to claim 1, wherein the pulse width of the first sustain pulse is set wider than the pulse width of a subsequent sustain pulse. 제2항에 있어서, 상기 첫번째 유지펄스의 펄스폭은 8μsec 이상으로 설정되는 것을 특징으로 하는 교류형 플라즈마 표시패널 구동방법.The method of driving an alternating current plasma display panel according to claim 2, wherein the pulse width of the first sustain pulse is set to 8 mu sec or more. 한 프레임을 다수개의 서브 필드로 나누어 전체 패널의 X유지전극과 Y유지전극으로 이루어진 디스플레이 전극사이에 방전을 동시에 일으켜서 계조표시를 행하는 어드레스 디스플레이 표시방법이 채용된 교류형 플라즈마 표시패널의 구동방법에 있어서, 상기 다수개의 서브필드들중 적어도 하나가 입력되는 신호에 따라 표시해야 할 셀을 지정하기 위한 어드레스 기간 및 상기 어드레스 기간에서 지정된 셀들을 점등, 유지하기 위해 유지펄스들을 인가하는 유지방전기간을 포함하며, 상기 다수개의 서브필드들중 적어도 하나의 유지방전기간에서, 첫번째 유지펄스의 인가전압과 이후의 유지펄스의 인가전압을 상호 차등적으로 설정하는 것을 특징으로 하는 교류형 플라즈마 표시패널 구동방법.A method of driving an AC plasma display panel employing an address display display method in which a frame is divided into a plurality of subfields and a gray scale is displayed by simultaneously discharging between display electrodes made up of X and Y sustain electrodes of an entire panel. An address period for designating a cell to be displayed according to an input signal of at least one of the plurality of subfields, and a sustain discharge period for applying sustain pulses to light and sustain the cells specified in the address period; And, in the sustain discharge period of at least one of the plurality of subfields, differentially sets the applied voltage of the first sustain pulse and the subsequently applied voltage of the sustain pulse. 제4항에 있어서, 상기 첫번째 유지펄스의 인가전압은 이후의 유지펄스의 인가전압보다 높고, 해당셀에 벽전하 축적 없이도 방전이 가능한 크기의 임계전압보다 낮게 설정되는 것을 특징으로 하는 교류형 플라즈마 표시패널 구동방법.5. The AC plasma display as claimed in claim 4, wherein an applied voltage of the first sustain pulse is higher than an applied voltage of a subsequent sustain pulse and lower than a threshold voltage having a magnitude capable of discharging without accumulating wall charges in the corresponding cell. Panel driving method.
KR1019970048939A 1997-09-26 1997-09-26 Driving method of ac plasma display panel KR100262334B1 (en)

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