CN1979614A - 等离子体显示装置 - Google Patents

等离子体显示装置 Download PDF

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CN1979614A
CN1979614A CNA2006101633971A CN200610163397A CN1979614A CN 1979614 A CN1979614 A CN 1979614A CN A2006101633971 A CNA2006101633971 A CN A2006101633971A CN 200610163397 A CN200610163397 A CN 200610163397A CN 1979614 A CN1979614 A CN 1979614A
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electrode
display device
substrate
plasm display
rib
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桥本康宣
岩瀬信博
岸智胜
柴田将之
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Hitachi Plasma Display Ltd
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Fujitsu Hitachi Plasma Display Ltd
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/10AC-PDPs with at least one main electrode being out of contact with the plasma
    • H01J11/12AC-PDPs with at least one main electrode being out of contact with the plasma with main electrodes provided on both sides of the discharge space
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J11/00Gas-filled discharge tubes with alternating current induction of the discharge, e.g. alternating current plasma display panels [AC-PDP]; Gas-filled discharge tubes without any main electrode inside the vessel; Gas-filled discharge tubes with at least one main electrode outside the vessel
    • H01J11/20Constructional details
    • H01J11/34Vessels, containers or parts thereof, e.g. substrates
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/28Control 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
    • G09G3/288Control 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
    • G09G3/291Control 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
    • G09G3/293Control 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 address discharge
    • G09G3/2932Addressed by writing selected cells that are in an OFF state
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control 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
    • G09G3/22Control 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
    • G09G3/28Control 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
    • G09G3/288Control 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
    • G09G3/296Driving circuits for producing the waveforms applied to the driving electrodes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2310/00Command of the display device
    • G09G2310/02Addressing, scanning or driving the display screen or processing steps related thereto
    • G09G2310/0202Addressing of scan or signal lines
    • G09G2310/0218Addressing of scan or signal lines with collection of electrodes in groups for n-dimensional addressing
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20Constructional details
    • H01J2211/34Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/36Spacers, barriers, ribs, partitions or the like
    • H01J2211/361Spacers, barriers, ribs, partitions or the like characterized by the shape
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2211/00Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
    • H01J2211/20Constructional details
    • H01J2211/34Vessels, containers or parts thereof, e.g. substrates
    • H01J2211/38Dielectric or insulating layers

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  • Plasma & Fusion (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Gas-Filled Discharge Tubes (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Control Of Gas Discharge Display Tubes (AREA)

Abstract

本发明以提供小型的高亮度全HD等离子体显示装置为课题。本发明的等离子体显示装置具有第一和第二基板;为了在所述第一基板上进行维持放电而在所述第一基板上形成的第一和第二电极;为了在与所述第二电极之间进行地址放电而在所述第二基板上形成的第三电极,所述第一~第三电极构成由RGB的单元组成的一个像素,能够进行1920×1080像素的显示,显示画面的对角的长度不到132cm,进行隔行扫描驱动,大致半数的第三电极从面板的上边连接驱动电路,其余的第三电极从面板的下边连接驱动电路。

Description

等离子体显示装置
技术领域
本发明是涉及等离子体显示装置。
背景技术
等离子体显示装置是大型的平面型显示器,作为家用的平面电视机的市场在扩大,而且近年来,高精细化的要求加强,进行了具有1920×1080的像素、即所谓全(Full)HD显示器的开发。
发明内容
然而,在全HD的等离子体显示装置中,存在有像素减小,亮度下降,以及电极点距(pitch)变窄,制造成品率下降等问题。因此,开发的显示器都是大型,以现状的开发水准,50型是最小的尺寸。
本发明的目的在于,以小的尺寸提供全HD的等离子体显示装置。
本发明的等离子体显示装置的特征在于,具有:第一和第二基板;用于在上述第一基板上进行维持放电而在上述第一基板上形成的第一和第二电极;以及用于在与上述第二电极之间进行地址放电而在上述第二基板上形成的第三电极,上述第一~第三电极构成由R(红)G(绿)B(蓝)单元组成的一个像素,能够进行1920×1080像素的显示,显示画面的对角的长度不到132cm,进行隔行扫描(Interlace)驱动,大致半数的第三电极从面板的上边连接驱动电路,其余的第三电极从面板的下边连接驱动电路。
通过使用隔行扫描驱动,能够缩短扫描时间,使显示放电的时间延长。由此能够实现高亮度。进而,由于能够实现单扫描(Single Scan),所以能够使用面板的上下边将上述第三电极交互地取出,取出的电极的点距加倍,所以使用制造成品率提高。
附图说明
图1是表示本发明的第一实施方式中等离子体显示装置的结构例的示意图。
图2是表示第一实施方式中等离子体显示面板的结构例的分解立体图。
图3是表示第一实施方式中一帧图像的结构例的示意图。
符号说明:
1…前面玻璃基板
2…背面玻璃基板
3…等离子体显示面板
4…地址电极驱动电路1
5…地址电极驱动电路2
6…X电极驱动电路
7…Y电极驱动电路
8…扫描电路
9…隔壁(肋条)
11…总线电极
12…透明电极
13、16…介电体层
14…保护层
15…地址电极
18~20…荧光体层
21…信号处理电路
22…驱动控制电路
具体实施方式
(第一实施方式)
图1是表示本发明第一实施方式中等离子体显示装置的结构例的示意图。信号处理电路21对从输入端子IN输入的信号进行处理,输出到驱动控制电路22。驱动控制电路22控制X电极驱动电路6、Y电极驱动电路7、扫描电路8、和地址电极驱动电路4、5。X电极驱动电路6向多个X电极(X1、X2、…)供给规定的电压。以下将各个X电极(X1、X2、…)的每一个或其总称称为X电极Xi,i为附加字。Y电极驱动电路7通过扫描电路8向多个Y电极(Y1、Y2、…)供给规定的电压。以下将各个Y电极(Y1、Y2、…)的每一个或其总称称为Y电极Yi,i为附加字。地址电极驱动电路4、5向多个地址电极(A1、A2、…)供给规定的电压。以下将各个地址电极(A1、A2、…)或其总称称为地址电极Aj,j为附加字。
进而在等离子体显示面板3中,Y电极Yi与X电极Xi在水平方向上并列延伸成行,地址电极Aj在垂直方向上延伸成列。Y电极Yi与X电极Xi在垂直方向上交互配置。显示单元Cij由进行维持放电的X电极、Y电极的组和地址电极Aj的交点所形成。该单元Cij的RGB的组与像素相对应,等离子体显示面板3能够进行二维图像显示。在full spec HDTV中,具有1920(水平方向)×1080(垂直方向)个像素。此外,在本实施例中,由于除了面板端的X电极之外,X电极与Y电极是对于两个像素共同使用,所以X电极由541个、Y电极由540个构成。单元点距为0.16mm×0.48mm。肋条为直的肋条。
图2是表示第一实施方式中等离子体显示面板3的结构例的分解立体图。总线电极11在透明电极12上形成。电极11和12的组与图1中的X电极Xi或Y电极Yi相对应。X电极Xi和Y电极Yi在前面玻璃基板1上交互形成。在其上覆盖有对于放电空间绝缘的介电体层13。进而在其上覆盖MgO(氧化镁)保护层14。另一方面,地址电极15与图1的地址电极Aj相对应,在与前面玻璃基板1相对配置的背面玻璃基板2上形成。在其上覆盖介电体层16。进而在其上覆盖有红色荧光体层18、绿色荧光体层19、和蓝色荧光体层20。在隔壁(肋条)9的内面上,分别配置、涂敷有条纹状的红、绿、蓝色荧光体层18~20。由X电极Xi与Y电极Yi之间的放电激励荧光体层18~20,发出各色的光。在前面玻璃基板1与背面玻璃基板2之间的放电空间内封入有Ne+He+Xe的阴极(Penning)气体等放电气体。放电气体中Xe的浓度为5%,He的浓度为30%,总压力为450Torr。
图3是表示第一实施方式中一帧图像fk的结构例的示意图。图像由多帧fk-1、fk、fk+1构成。一帧图像fk例如是由第一子帧sf1、第二子帧sf2、…第八子帧sf8所形成。各子帧sf1、sf2等或其总称,在以下称为子帧sf。各子帧sf具有与灰度等级比特数相当的比重。
各子帧sf由复位期间TR,地址期间TA1、TA2,以及维持(Sustain)放电期间TS构成。在复位期间TR,进行显示单元Cij的初始化。对于Y电极Yi施加正的钝波(具有正的倾斜的波形)Pr1和负的钝波(具有负的倾斜的波形)Pr2。
地址期间分为TA1、TA2,由地址电极Aj与Y电极Yi之间的地址放电可以选择各显示单元Cij的发光或不发光。具体地,在地址期间TA1,对于偶数编号的Y电极Y2、Y4、Y6、Y8、…等顺次施加扫描脉冲Py,在地址期间TA2,对于奇数编号的Y电极Y1、Y3、Y5、Y7、…等顺次施加扫描脉冲Py,对应于该扫描脉冲Py,对地址电极Aj施加地址脉冲Pa,由此能够选择期望的显示单元Cij的发光或不发光。
在维持放电期间TS,在与选择的显示单元Cij对应的X电极与Y电极之间进行维持放电,进行发光。但是,在偶数帧中,在偶数编号的X电极与偶数编号的Y电极之间,以及奇数编号的X电极与奇数编号的Y电极之间进行维持放电,在奇数帧中,在偶数编号的X电极与奇数编号的Y电极之间,以及奇数编号的X电极与偶数编号的Y电极之间进行维持放电,即进行隔行扫描驱动。
在各子帧sf中,由X电极Xi与Y电极Yi之间的维持放电脉冲Ps所引起的发光次数(维持放电期间TS的长度)不同。由此,能够决定灰度等级值。维持放电脉冲Ps是电压Vs和电压-Vs的脉冲。
在full spec HDTV对应的等离子体显示装置中,扫描电极数(本实施例中是Y电极)是1080个,在通常的逐行(progressive)驱动中进行1080行的扫描时,使地址期间变长,而维持期间的时间不充分,存在有亮度低下的问题。所以,将画面分为上下两部分,采用对上下画面同时进行扫描的双(dual)扫描的方式。如果是该双扫描的方式,仅需要540行的量的扫描时间即可,所以能够使地址期间缩短。
但是,在双扫描方式的情况下,由于是上侧画面的地址电极从面板的上边取出,下侧画面的地址电极从面板的下边取出,所以在RGB单元横向排列的、通常的面板结构的情况下,取出部分的地址电极的数目为1920的3倍,即5760个。在现有技术中,取出部分的点距在0.2mm以下时,有制造成品率下降的问题,所以优选有0.2mm以上的点距。在这种情况下,画面的对角长度为132cm以上。就是说,在现有的逐行驱动的full spec HDTV的情况下,如果画面的对角长度不到132cm,有生产性恶化的问题。进而,地址驱动器的连接电极数目多达5730的2倍,即11460个,对于提高制造成品率也是不利的。
与此相反,在本实施例中,由于使用隔行扫描驱动,所以即使是使用单扫描方式,也能够确保为了在540行的扫描时间完成的维持期间充分地长,能够实现高的亮度。所以,如本实施例,通过将地址电极从面板的上边、下边交互地取出,与逐行驱动的双扫描方式相比,能够使取出部的地址电极点距增大到2倍。在本实施例中,虽然横向的单元点距为0.16mm,但地址电极取出部的点距为0.32mm。进而,地址驱动器的连接电极数目也是5730个,与逐行驱动的双扫描方式相比,减少到一半。就是说,通过使用本实施例的结构,即使是画面对角长度不到132cm的面板,生产性也不会下降,能够制造与full specHDTV相对应的等离子体显示装置。
(第二实施方式)
在与full spec HDTV相对应的等离子体显示装置中,由于像素多,所以一个像素的数值孔径小,亮度下降。因此,至少要提高数值孔径。通常,在横像素数为1024个像素的等离子体显示装置中,即使是顶部宽度最小,也要使用50μm的肋条,但在本实施例中,使用顶部宽度为40μm的薄肋条。由此能够提高数值孔径。此外,在这种情况下的肋条材料使用含有铅氧化物的肋条材料。
(第三实施方式)
在第二实施方式中,使用含有铅氧化物的隔壁材料,在现状下,隔壁的顶部宽度的界限为40μm,但是如果使用不含有铅氧化物的隔壁材料,则对肋条形成图案的感光材料中,能够选择可进行更高精细的形成图案的材料,能够形成更薄的肋条。在本实施例中,使用不含铅氧化物的肋条材料,形成肋条顶部宽度为33μm的肋条。就是说,通过使用不含铅氧化物的肋条材料,能够形成顶部宽度不到40μm的肋条。而且,不含铅氧化物的肋条材料能够使介电率下降,在本实施例中,肋条的比介电率为8.8。由于在full spec HDTV的面板中肋条的数目增多,所以为了降低无效电力,肋条的低介电率化是有效的。因此,第二实施方式的肋条的比介电率为13。
(第四实施方式)
在与full spec HDTV相对应的等离子体显示装置中,由于放电空间的横方向变窄,所以驱动电压增高。因此,希望采用降低前面基板的介电体层的介电率,减薄膜的厚度的方法。由介电率高的材料形成薄的介电体层时,会产生过大的放电电流,所以是不优选的。通常的介电体层中包含介电率高的铅氧化物,比介电率高达13,膜的厚度达32μm。与此相比,在本实施方式中,使用由除去了铅氧化物的硅氧化物所构成的介电体层,能够构成比介电率低达4,膜的厚度不到32μm的介电体层。在本实施例中膜厚为10μm。因此,通常提高了Xe的浓度时要使驱动电压上升,但即使是使用Xe的浓度为10%,Ne的浓度为90%,总压力为450Torr的放电气体,也能够由与现有技术大致同等的电压所驱动。
此外,上述实施方式仅仅是表示为了实施本发明的具体化的例,不应该解释为对本发明的技术范围的限定。就是说,只要是不脱离本发明的技术思想或其主要特征,能够以各种各样的方式进行实施。

Claims (9)

1.一种等离子体显示装置,其特征在于,具有:
第一和第二基板;
用于在所述第一基板上进行维持放电而在所述第一基板上形成的第一和第二电极;以及
用于在与所述第二电极之间进行地址放电而在所述第二基板上形成的第三电极,
所述第一~第三电极构成由RGB单元组成的一个像素,能够由隔行扫描驱动而进行1920×1080像素的显示,
大致半数的所述第三电极从面板的上边连接驱动电路,其余的大致半数的电极从面板的下边连接驱动电路,
显示区域的对角的长度不到132cm。
2.根据权利要求1所述的等离子体显示装置,其特征在于:
所述第一和第二电极除面板的端部之外,由两个显示线所共用。
3.根据权利要求1所述的等离子体显示装置,其特征在于:
并排顺次、交互地从面板的上边和面板的下边取出所述第三电极,与驱动电路连接。
4.根据权利要求1所述的等离子体显示装置,其特征在于:
在所述第二基板上具有划分放电空间的肋条,该肋条的顶部宽度不到50μm。
5.根据权利要求1所述的等离子体显示装置,其特征在于:
在所述第二基板上具有划分放电空间的肋条,该肋条由不含铅氧化物的材料形成。
6.根据权利要求5所述的等离子体显示装置,其特征在于:
所述肋条的项部宽度不到40μm。
7.根据权利要求1所述的等离子体显示装置,其特征在于:
在所述第一基板上形成覆盖所述第一和第二电极的介电体层,该介电体层由不含铅氧化物的材料形成。
8.根据权利要求7所述的等离子体显示装置,其特征在于:
所述介电体层的材料是硅氧化物。
9.根据权利要求7所述的等离子体显示装置,其特征在于:
所述介电体层的厚度不到32μm。
CNA2006101633971A 2005-12-06 2006-12-06 等离子体显示装置 Pending CN1979614A (zh)

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KR100938683B1 (ko) * 2008-01-29 2010-01-25 엘지전자 주식회사 플라즈마 디스플레이 장치 및 구동 방법
CN102396047A (zh) * 2010-02-22 2012-03-28 松下电器产业株式会社 等离子显示面板

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