KR100323696B1 - A structure of bus electrode of Plasma Display Panel - Google Patents
A structure of bus electrode of Plasma Display Panel Download PDFInfo
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- KR100323696B1 KR100323696B1 KR1019990002374A KR19990002374A KR100323696B1 KR 100323696 B1 KR100323696 B1 KR 100323696B1 KR 1019990002374 A KR1019990002374 A KR 1019990002374A KR 19990002374 A KR19990002374 A KR 19990002374A KR 100323696 B1 KR100323696 B1 KR 100323696B1
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- display panel
- plasma display
- wiring
- width
- transparent electrode
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- 239000000758 substrate Substances 0.000 claims abstract description 14
- 238000009751 slip forming Methods 0.000 claims abstract description 5
- 238000005192 partition Methods 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 230000004888 barrier function Effects 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052754 neon Inorganic materials 0.000 description 1
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J11/00—Gas-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
- H01J11/20—Constructional details
- H01J11/22—Electrodes, e.g. special shape, material or configuration
- H01J11/24—Sustain electrodes or scan electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
- H01J9/02—Manufacture of electrodes or electrode systems
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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
- G09G3/296—Driving circuits for producing the waveforms applied to the driving electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2211/00—Plasma display panels with alternate current induction of the discharge, e.g. AC-PDPs
- H01J2211/20—Constructional details
- H01J2211/22—Electrodes
- H01J2211/24—Sustain electrodes or scan electrodes
- H01J2211/245—Shape, e.g. cross section or pattern
Abstract
본 발명은 플라즈마 디스플레이 패널에 관한 것으로, 특히 플라즈마 디스플레이 패널의 전극구조에 관한 것이다. 종래의 플라즈마 디스플레이 패널은 투명전극의 높은 저항으로 인하여 방전전압이 강하되는 문제점이 있었다. 그러나, 본 발명에 의한 플라즈마 디스플레이 패널은 소정의 하부기판 위에 스트라이프 형상으로 연속하여 형성된 격벽, 격벽에 직교하도록 하부기판에 대향하는 소정의 상부기판 위에 스트라이프 형상으로 연속하여 형성된 투명전극 배선, 그리고 투명전극 배선 위에 격벽에 겹쳐지는 부분이 더 넓은 폭을 가지도록 형성된 버스전극 배선을 포함하여 구성된 특징을 가지고 있어 종래의 플라즈마 디스플레이 패널에 비해 버스전극의 배선저항이 낮으므로, 방전전압의 강하값이 종래보다 낮아지는 효과가 있다.The present invention relates to a plasma display panel, and more particularly to an electrode structure of the plasma display panel. The conventional plasma display panel has a problem that the discharge voltage drops due to the high resistance of the transparent electrode. However, the plasma display panel according to the present invention is a barrier rib that is continuously formed in a stripe shape on a predetermined lower substrate, a transparent electrode wiring that is continuously formed in a stripe shape on a predetermined upper substrate facing the lower substrate so as to be orthogonal to the barrier, and a transparent electrode. Since the overlapping portion of the barrier over the wiring includes a bus electrode wiring formed to have a wider width, the wiring resistance of the bus electrode is lower than that of the conventional plasma display panel. It has a lowering effect.
Description
본 발명은 플라즈마 디스플레이 패널에 관한 것으로, 특히 버스전극의 배선구조에 관한 것이다.The present invention relates to a plasma display panel, and more particularly, to a wiring structure of a bus electrode.
플라즈마 디스플레이 패널과 액정표시장치(LCD)는 평판형 표시장치 중에서 가장 실용성이 높은 차세대 표시장치로 각광받고 있다. 특히 플라즈마 디스플레이 패널은 액정표시장치보다 휘도가 높고 시야각이 넓어 옥외 광고탑 또는, 벽걸이 티브이, 극장용 디스플레이와 같이 박형의 대형 디스플레이로서 응용성이 넓다. 이러한 플라즈마 디스플레이 패널은 CRT 브라운관과 달리 각 방전셀의 방전에 의해 화면을 표시한다.Plasma display panels and liquid crystal displays (LCDs) are spotlighted as next generation display devices with the highest practicality among flat panel display devices. In particular, the plasma display panel has a higher luminance and wider viewing angle than a liquid crystal display device, and thus has wide applicability as a large, thin display such as an outdoor advertising tower, a wall display TV, or a theater display. Unlike the CRT CRT, the plasma display panel displays a screen by discharge of each discharge cell.
도 1은 일반적인 플라즈마 디스플레이 패널의 단면구조를 도시한 것으로, 전면 유리기판(1)의 동일면 상에 한 쌍의 상부전극(4)을 형성하고, 상부전극(4) 위에 유전층을 인쇄기법으로 형성하며, 유전층(2) 위에 보호층을 증착방식으로 형성한 상부구조와, 배면 유리기판(11) 위에 하부전극(12)을 형성하고, 하부전극(12) 간에 인접한 셀(cell)과의 누화(crosstalk) 현상을 방지하기 위해 격벽(6)을 형성하며, 격벽(6)과 하부전극(12) 주위에 형광체(8, 9, 10)를 형성한 하부 구조로 구성되어 상부구조와 하부구조의 사이 공간에 불활성 가스를 봉입하여 방전영역(5)을 가지도록 구성된다.1 illustrates a cross-sectional structure of a general plasma display panel, in which a pair of upper electrodes 4 are formed on the same surface of the front glass substrate 1, and a dielectric layer is formed on the upper electrodes 4 by a printing method. In addition, an upper structure in which a protective layer is formed on the dielectric layer 2 by a deposition method, and a lower electrode 12 are formed on the rear glass substrate 11, and crosstalk with adjacent cells between the lower electrodes 12 is performed. The barrier rib 6 is formed to prevent the phenomenon, and the lower structure is formed by forming the phosphors 8, 9, and 10 around the barrier rib 6 and the lower electrode 12 to form a space between the upper structure and the lower structure. The inert gas is enclosed in the structure so as to have a discharge region 5.
이와 같은 구조에서 한 쌍의 상부전극(4) 상호간에 구동전압을 인가하게 되면 유전층(2)과 보호층(3) 표면의 방전영역에서 면방전이 일어나서 자외선(7)이 발생된다. 이 자외선(7)에 의해 형광체(8, 9, 10)를 여기시키고, 발광된 형광체(8, 9, 10)에 의해 칼라(color) 표시가 이루어진다.In such a structure, when a driving voltage is applied between the pair of upper electrodes 4, surface discharge occurs in the discharge regions of the surfaces of the dielectric layer 2 and the protective layer 3, thereby generating ultraviolet rays 7. The ultraviolet rays 7 excite the phosphors 8, 9, and 10, and color display is performed by the emitted phosphors 8, 9, and 10.
즉, 방전셀(cell) 내부에 존재하는 전자들이 인가된 구동전압에 의해 음극(-)으로 가속하면서, 상기 방전셀 안에 400∼500 torr 정도의 압력으로 채워진 불활성 혼합가스 즉, 헬륨(He)을 주성분으로 하여 크세논(Xe), 네온(Ne) 가스 등을 첨가한 페닝(Penning) 혼합가스와 충돌하여 불활성 가스가 여기되면서 147nm의 파장을 갖는 자외선이 발생한다. 이러한 자외선(7)이 하부전극(12)과 격벽(6) 주위를 둘러싸고 있는 형광체(8, 9, 10)와 충돌하여 가시광선 영역에 발광이 된다.That is, while the electrons inside the discharge cell accelerate to the cathode (-) by the applied driving voltage, helium (He) is filled with the inert mixed gas filled with the pressure of about 400 to 500 torr in the discharge cell. As the main component, it collides with a Penning mixed gas to which xenon (Xe), neon (Ne) gas, etc. are added, and the inert gas is excited to generate ultraviolet rays having a wavelength of 147 nm. The ultraviolet light 7 collides with the phosphors 8, 9, and 10 surrounding the lower electrode 12 and the partition wall 6 to emit light in the visible light region.
도 2는 플라즈마 디스플레이 패널의 상판에 형성된 상부전극의 평면구조를 도시한 것으로서, 각각의 상부전극은 데이터 전압을 외부로부터 인가받는 버스전극(4-1, 4-2)과, 그 버스전극에 연결되어 인접한 전극끼리 방전을 일으키는 투명전극(4-1', 4-2')으로 구성되어 있다. 그리고, 각 전극은 하판에 형성된 격벽(6)으로 구분되어 그 구분된 하나의 영역이 하나의 화소를 이루고 있다. 이 때, 외부의 구동회로로부터 방전전압을 인가받는 버스전극은 일직선으로 구성되어 있고, 투명전극은 버스전극으로부터 전압을 인가받아 인접한 투명전극과 방전을 일으킨다.FIG. 2 illustrates a planar structure of an upper electrode formed on an upper plate of a plasma display panel, wherein each upper electrode is connected to bus electrodes 4-1 and 4-2 to which a data voltage is applied from the outside, and a bus electrode thereof. And the transparent electrodes 4-1 'and 4-2' which generate discharge between adjacent electrodes. Each electrode is divided into partitions 6 formed on the lower plate, and one divided region forms one pixel. At this time, the bus electrode to which the discharge voltage is applied from the external driving circuit is formed in a straight line, and the transparent electrode receives the voltage from the bus electrode to generate a discharge with the adjacent transparent electrode.
그런데, 종래의 플라즈마 디스플레이 패널의 상부전극은 버스전극보다 높은 저항의 투명전극으로 인해 방전전압을 강하시키므로, 방전이 균일하지 않아 화질이 불균일해지는 문제점이 있다. 이러한 화질의 불균형을 해소하기 위하여 상부전극의 버스전극 배선의 폭을 넓힌 플라즈마 디스플레이 패널은 방전셀의 개구율을 감소시켜 패널의 휘도가 저하되는 문제점이 있다. 또, 개구율의 감소를 방지하기 위하여버스전극의 배선이 두껍게 형성되면, 패널 표면의 요철이 심해져서 제조수율이 낮아지는 문제점이 있다.However, since the upper electrode of the conventional plasma display panel lowers the discharge voltage due to the transparent electrode having a higher resistance than the bus electrode, there is a problem in that the image quality is uneven because the discharge is not uniform. In order to solve such an imbalance in image quality, the plasma display panel having a wider width of the bus electrode wiring of the upper electrode has a problem in that the luminance of the panel is lowered by decreasing the aperture ratio of the discharge cells. In addition, if the wiring of the bus electrode is formed thick in order to prevent the reduction of the aperture ratio, there is a problem in that the unevenness of the surface of the panel is increased and the production yield is lowered.
본 발명은 이러한 문제점을 해결하기 위한 것으로, 개구율이 감소되지 않고 전극 배선의 두께를 두껍게 하지 않으면서 버스전극 배선의 저항을 낮추어 방전전압의 강하를 줄이는 데에 그 목적이 있다.SUMMARY OF THE INVENTION The present invention has been made to solve this problem, and its purpose is to reduce the drop in discharge voltage by lowering the resistance of the bus electrode wiring without reducing the aperture ratio and increasing the thickness of the electrode wiring.
도 1은 일반적인 플라즈마 디스플레이 패널의 단면구조를 도시한 도면.1 is a cross-sectional view of a typical plasma display panel.
도 2는 플라즈마 디스플레이 패널의 상판에 형성된 상부전극의 평면구조를 도시한 도면.2 is a view showing a planar structure of an upper electrode formed on an upper plate of a plasma display panel.
도 3은 본 발명에 의한 플라즈마 디스플레이 패널의 상부전극과 격벽을 도시한 평면도.3 is a plan view showing an upper electrode and a partition wall of the plasma display panel according to the present invention;
도 4는 본 발명에 의한 플라즈마 디스플레이 패널의 상부전극의 일례를 도시한 평면도.4 is a plan view showing an example of an upper electrode of a plasma display panel according to the present invention;
도 5는 본 발명의 투명전극 배선과 버스전극 배선 및 격벽의 단면을 도시한 단면도5 is a cross-sectional view showing a cross section of a transparent electrode wiring, a bus electrode wiring and a partition wall of the present invention;
도면의 상세한 설명Detailed description of the drawings
100 : 투명전극 110 : 버스전극의 배선부100: transparent electrode 110: wiring portion of the bus electrode
111 :버스전극의 분기부200 : 격벽111: branch of the bus electrode 200: partition wall
본 발명은 버스전극 배선에서 격벽 위의 배선에 소정의 분기부를 형성한 것이 특징이다.The present invention is characterized in that a predetermined branching portion is formed in the wiring on the partition wall in the bus electrode wiring.
본 발명은 도 3에 도시된 것과 같이 하부기판 위에 스트라이프 형상으로 형성된 격벽(200)과, 격벽(200)에 직교하도록 상부기판 위에 형성된 투명전극(100) 배선, 그리고 투명전극(100) 배선 위에 격벽(200)에 겹쳐지는 부분이 더 넓은 폭을 가지도록 형성된 버스전극(110, 111) 배선을 포함하여 구성되어 있다.According to the present invention, as shown in FIG. 3, the barrier rib 200 formed in a stripe shape on the lower substrate, the transparent electrode 100 wiring formed on the upper substrate so as to be perpendicular to the barrier 200, and the barrier rib on the transparent electrode 100 wiring The overlapping portion 200 is configured to include the bus electrodes 110 and 111 wiring formed to have a wider width.
격벽(200)은 소정의 하부기판 위에 스트라이프 형상으로 연속하여 형성되어 있고, 투명전극(100) 배선은 하부기판에 대향하여 설치된 상부기판 위에 격벽(200)에 직교하도록 형성되어 있다. 격벽(200)과 투명전극(100) 배선은 종래의 플라즈마 디스플레이 패널에 설치된 것과 동일하므로, 본 발명에서는 그에 대한 상세한 설명을 생략하도록 한다.The partition wall 200 is continuously formed in a stripe shape on a predetermined lower substrate, and the wiring of the transparent electrode 100 is formed to be orthogonal to the partition wall 200 on the upper substrate provided to face the lower substrate. Since the barrier 200 and the wiring of the transparent electrode 100 are the same as those of the conventional plasma display panel, detailed description thereof will be omitted.
버스전극(110, 111) 배선은 투명전극(100) 배선 위에 소정의 폭으로 형성되어 있고, 특히 격벽(200)에 겹쳐지는 부분이 다른 부분보다 더 넓은 폭을 가지도록 구성되어 있다. 즉, 버스전극(110, 111) 배선은 투명전극(100) 배선 위에 소정의제 1 폭으로 형성된 배선부(110), 그리고 투명전극(100) 배선과 격벽(200)이 겹쳐지는 부분(A)에 제 1 폭보다 큰 폭인 제 2 폭으로 형성된 분기부(111)로 구성되어 있다.The wirings of the bus electrodes 110 and 111 are formed to have a predetermined width on the wiring of the transparent electrode 100, and in particular, the portion overlapping the partition 200 has a wider width than the other portions. That is, the bus electrodes 110 and 111 wirings include a wiring portion 110 formed on the transparent electrode 100 wiring with a predetermined first width, and a portion A where the transparent electrode 100 wiring and the barrier rib 200 overlap each other. It consists of the branch part 111 formed in the 2nd width which is larger than a 1st width.
이 때, 버스전극(110, 111) 배선은 분기부(111)의 길이가 격벽(200)의 폭과 동일하거나, 또는 도 4에 도시된 것과 같이 격벽(200)의 폭보다 크도록 형성될 수도 있다. 그리고, 분기부(111)의 폭은 투명전극(100) 배선의 폭과 동일하거나, 또는 도 4에 도시된 것과 같이 투명전극 배선과 격벽의 교차부(A) 투명전극(100) 배선의 폭보다 작을 수도 있다.In this case, the bus electrodes 110 and 111 may be formed such that the length of the branch 111 is equal to the width of the partition wall 200 or larger than the width of the partition wall 200 as shown in FIG. 4. have. In addition, the width of the branch 111 is equal to the width of the transparent electrode 100 wiring, or as shown in FIG. 4, or the width of the junction A of the transparent electrode wiring and the partition wall A is greater than the width of the wiring of the transparent electrode 100. It may be small.
이하, 본 발명의 전극구조를 가진 플라즈마 디스플레이 패널의 동작원리는 다음과 같다.Hereinafter, the operation principle of the plasma display panel having the electrode structure of the present invention is as follows.
플라즈마 디스플레이 패널의 구동회로에서 생성된 방전전압이 버스전극(110, 111)의 일측 끝단에 인가되면, 버스전극(110, 111) 배선을 통해 투명전극(100) 배선에 방전전압이 인가된다. 이 때, 투명전극(100) 배선의 저항은 버스전극(110, 111) 배선의 저항에 비해 높다. 따라서, 버스전극(110, 111) 배선의 배선폭에 따라 방전전압의 강하량이 결정된다. 즉, 버스전극(110, 111) 배선의 배선폭이 넓을수록 방전전압의 강하량이 줄어든다.When the discharge voltage generated in the driving circuit of the plasma display panel is applied to one end of the bus electrodes 110 and 111, the discharge voltage is applied to the transparent electrode 100 via the bus electrodes 110 and 111. At this time, the resistance of the wiring of the transparent electrode 100 is higher than that of the wiring of the bus electrodes 110 and 111. Therefore, the drop amount of the discharge voltage is determined according to the wiring width of the wirings of the bus electrodes 110 and 111. In other words, as the wiring width of the bus electrodes 110 and 111 becomes wider, the drop amount of the discharge voltage decreases.
본 발명의 버스전극(110, 111) 배선은 일부분에 소정의 폭을 가진 분기부(111)가 형성되어 있으므로, 종래의 버스전극(110, 111) 배선에 비해 폭이 넓다. 그러므로, 본 발명의 버스전극(110, 111) 배선의 저항은 종래의 버스전극(110, 111) 배선에 비해 배선 저항이 낮다.In the wiring of the bus electrodes 110 and 111 of the present invention, since a branch portion 111 having a predetermined width is formed in a portion thereof, the wiring of the bus electrodes 110 and 111 is wider than that of the conventional bus electrode 110 and 111 wiring. Therefore, the resistance of the wiring of the bus electrodes 110 and 111 of the present invention is lower in wiring resistance than that of the conventional bus electrodes 110 and 111 wiring.
또한, 본 발명의 버스전극(110, 111) 배선에 형성된 분기부(111)는 하부기판에 형성된 격벽(200)과 투명전극(100)의 교차부에 형성되므로, 플라즈마 디스플레이 패널의 개구율에 영향을 미치지 않는다. 뿐만 아니라, 버스전극(110, 111) 배선의 분기부(111)는 빛을 투과시키지 않는 광차단재로 구성되므로, 격벽(200)이 완전하게 차단하지 못한 빛을 차단하는 역할을 함께 수행한다.In addition, since the branch 111 formed on the wiring of the bus electrodes 110 and 111 of the present invention is formed at the intersection of the barrier rib 200 formed on the lower substrate and the transparent electrode 100, the opening ratio of the plasma display panel is affected. Not crazy In addition, since the branch 111 of the wiring of the bus electrodes 110 and 111 is formed of a light blocking material that does not transmit light, the partition wall 200 serves to block light that is not completely blocked.
본 발명의 전극구조를 채용한 플라즈마 디스플레이 패널은 종래의 플라즈마 디스플레이 패널에 비해 버스전극의 배선저항이 낮으므로, 방전전압의 강하값이 낮아지는 효과가 있다. 따라서, 본 발명의 플라즈마 디스플레이 패널에 인가되는 방전전압이 종래의 플라즈마 디스플레이 패널에 인가되는 방전전압에 비해 균일해진다. 그 결과, 본 발명의 플라즈마 디스플레이 패널의 화질은 종래의 화질에 비해 균일해지는 효과가 있다.Plasma display panel employing the electrode structure of the present invention has a lower wiring resistance of the bus electrode than the conventional plasma display panel, there is an effect that the drop value of the discharge voltage is lowered. Therefore, the discharge voltage applied to the plasma display panel of the present invention becomes uniform compared to the discharge voltage applied to the conventional plasma display panel. As a result, the image quality of the plasma display panel of the present invention has the effect of becoming uniform as compared with the conventional image quality.
Claims (5)
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