# US 2004/0070342 A1 · Plasma display panel, manufacturing method and manufacturing apparatus of the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2004/0070342 A1 - Document ID: US20040070342A1 - Status: Published application - Kind: A1 - Application number: 10/630,929 - Filed: 2003-07-31 - Published: 2004-04-15 - Earliest claimed: 1999-02-12 - Assignees: Toppan Printing Co., Ltd. - Inventors: Eizaburo Watanabe; Naoto Ohno; Katsumi Ohira; Junichi Arai; Isao Kato; Yasumasa Akimoto; Ikuma Nishimura; Takao Minato; Ryuichi Nakamura - Web page: https://patentgrep.com/patent/US20040070342A1 ## CPC - H01J 9/242: {Spacers between faceplate and backplate} - C03B 19/06: by sintering, {e.g. by cold isostatic pressing of powders and subsequent sintering, by hot pressing of powders, by sintering slurries or dispersions not undergoing a liquid phase reaction} - C03C 17/007: {containing a dispersed phase, e.g. particles, fibres or flakes, in a continuous phase} - C03C 17/02: with glass (C03C17/34, C03C17/44 take precedence) - G02F 1/13334: {Plasma addressed liquid crystal cells [PALC]} - C03C 2217/44: characterized by the composition of the continuous phase - C03C 2217/452: Glass - C03C 2217/475: Inorganic materials - C03C 2217/485: Pigments - H01J 2211/36: Spacers, barriers, ribs, partitions or the like - Y02P 40/57: Improving the yield, e-g- reduction of reject rates - H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H) - C03B: MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES - C03C: CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A method of manufacturing a plasma display panel, which comprises the steps of filling a barrier rib-forming paste containing glass frit in a barrier ribs-forming intaglio and concurrently forming a paste layer having a constant thickness on the intaglio, superimposing a substrate on the barrier ribs-forming intaglio filled with the barrier rib-forming paste containing glass frit to thereby transfer the barrier rib-forming paste onto the substrate, and heating the barrier rib-forming paste that has been transferred to the substrate, thereby burning out existing organic components and concurrently sintering the glass frit to thereby form the barrier ribs and dielectric layer. The plasma display panel manufactured by this method is featured in that the barrier ribs and the dielectric layer are formed using the same barrier rib-forming material containing a low melting point glass frit. ## Claims ### Claim 1 A plasma display panel comprising: a back substrate; electrodes each formed in a region partitioned; barrier ribs arranged on said back substrate and partitioning said region; and a dielectric layer covering said electrodes, wherein said barrier ribs and said dielectric layer comprise the same barrier rib-forming material containing a low melting point glass frit, and a film thickness of said dielectric layer is in a range of 5 to 50 μm. ### Claim 2 (depends on 1) The plasma display panel according to claim 1, wherein a film thickness of said dielectric layer is in the range of 5 to 20 μm. ### Claim 3 A plasma display panel comprising: a back substrate; electrodes each formed in a region partitioned; and barrier ribs arranged on said back substrate and partitioning said region, wherein said barrier ribs are formed of a recessed structure comprising a bottom structure contacting with said back substrate, and an upper structure projected from said bottom structure; and said electrodes are each disposed at the bottom of said recessed structure. ### Claim 4 (depends on 3) The plasma display panel according to claim 3, wherein the visible light reflectivity of the regions other than the electrodes is 50% or more under the condition where a phosphor is not coated. ### Claim 5 (depends on 3) The plasma display panel according to claim 3, wherein a recessed portion is formed at the bottom of the opening portion of the recessed structure, and the electrode is disposed at this recessed portion. ### Claim 6 (depends on 3) The plasma display panel according to claim 3, wherein the width of the recessed portion is the same in size as the bottom of the opening portion of the recessed structure. ### Claim 7 (depends on 3) The plasma display panel according to claim 3, wherein the thickness of the bottom of the recessed structure is larger than the width of the upper structure of recessed portion. ### Claim 8 A back plate of plasma addressed liquid crystal display panel comprising: a back substrate; a transparent dielectric layer formed on said back substrate; transparent barrier ribs arranged on said transparent dielectric layer and comprising the same material as that of said transparent dielectric layer; an anode formed on said transparent dielectric layer; and a cathode formed on said transparent dielectric layer; wherein a film thickness of said transparent dielectric layer is in a range of 3 to 15 μm. ### Claim 9 (depends on 8) The back plate of plasma addressed liquid crystal display panel according to claim 8, wherein an angle between a sidewall of the transparent barrier rib and said back substrate is in a range of 85 to 95 degrees. ### Claim 10 (depends on 8) The back plate of, plasma addressed liquid crystal display panel according to claim 8, wherein a surface roughness of the sidewall of the transparent barrier rib is 1 μm or less and is equivalent almost to an optical flat surface. ### Claim 11 A plasma display panel comprising: a back substrate; and barrier ribs arranged on said back substrate, wherein said barrier ribs are formed of a recessed structure comprising a bottom structure contacting with said back substrate, and an upper structure projected from said bottom structure; and visible light reflectivity of the back substrate is 50% or more under a condition where a phosphor is not coated. ### Claim 12 A plasma display panel comprising: a back substrate; and barrier ribs arranged on said back substrate, wherein said barrier ribs are formed of a recessed structure comprising a bottom structure contacting with said back substrate, and an upper structure projected from said bottom structure; and a thickness of the bottom structure of the recessed structure is larger than a width of the upper structure of the recessed structure.