# US 7,745,359 B2 · Composition for dielectric layer of plasma display panel and plasma display panel including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,745,359 B2 - Document ID: US7745359B2 - Status: Granted - Kind: B2 - Application number: 12/323,839 - Filed: 2008-11-26 - Published: 2009-05-28 - Granted: 2010-06-29 - Earliest claimed: 2007-11-28 - Assignees: LG Electronics Inc. - Inventors: Munhyuk Lim - Web page: https://patentgrep.com/patent/US7745359B2 ## CPC - C03C 8/04: containing zinc - C03C 4/16: for dielectric glass - C03C 8/16: with vehicle or suspending agents, e.g. slip - C08K 3/40: Glass - C08K 5/12: of cyclic polycarboxylic acids - C08L 33/06: of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical - 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 - C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09) - C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06) ## Abstract A composition for a dielectric layer of a plasma display panel and a plasma display panel including the same are disclosed. The composition includes a glass frit, a binder, a dispersant, a plasticizer, and a solvent. The binder includes about 50 to 85 parts by weight of a first monomer, about 10 to 30 parts by weight of a second monomer, and about 1 to 20 parts by weight of a third monomer based on 100 parts by weight of the binder. ## Claims ### Claim 1 A composition for a dielectric layer of a plasma display panel, the composition comprising a glass frit, a binder, a dispersant, a plasticizer, and a solvent, wherein the binder includes about 50 to 85 parts by weight of a first monomer, about 10 to 30 parts by weight of a second monomer, and about 1 to 20 parts by weight of a third monomer based on 100 parts by weight of the binder, wherein the dispersant includes a polyamineamide-based compound. ### Claim 2 (depends on 1) The composition of claim 1, wherein an amount of the binder is about 30 to 50 parts by weight based on total weight of the composition. ### Claim 3 (depends on 1) The composition of claim 1, wherein an amount of the dispersant is about 0.1 to 5 parts by weight based on total weight of the composition. ### Claim 4 (depends on 1) The composition of claim 1, wherein the plasticizer includes at least one selected from the group consisting of phthalate-based, dioctyl adipate (DOA)-based, dioctyl azelate (DOZ)-based, and ester-based plasticizers. ### Claim 5 (depends on 1) The composition of claim 1, wherein an amount of the plasticizer is about 0.1 to 5 parts by weight based on total weight of the composition. ### Claim 6 (depends on 1) The composition of claim 1, wherein the solvent includes at least one selected from the group consisting of toluene, propylene glycol mononethyl ether (PGME), butylacetate (BA), methylethylketone (MEK), and cyclohexanone (CYC). ### Claim 7 (depends on 1) The composition of claim 1, wherein the first monomer includes hexaacrylate, the second monomer includes acrylate containing an alkyl group having 1 to 5 carbon atoms, and the third monomer includes a polar group. ### Claim 8 (depends on 7) The composition of claim 7, wherein the hexaacrylate monomer includes hexamethacrylate or 2-ethyl hexamethacrylate. ### Claim 9 (depends on 7) The composition of claim 7, wherein the acrylate monomer includes iso-butyl methacrylate, normal-butyl methacrylate, methyl methacrylate or ethyl methacrylate. ### Claim 10 (depends on 7) The composition of claim 7, wherein the monomer including the polar group includes 2-hydroxylethyl methacrylate or methacrylic acid. ### Claim 11 (depends on 1) The composition of claim 1, wherein the glass frit includes about 20 to 35 parts by weight of zinc oxide (ZnO), about 30 to 50 parts by weight of boron oxide (B2O3), about 5 to 25 parts by weight of silicon oxide (SiO2), about 0.1 to 10 parts by weight of aluminum oxide (Al2O3), and about 5 to 20 parts by weight of potassium oxide (K2O) based on 100 parts by weight of the glass frit. ### Claim 12 (depends on 11) The composition of claim 11, wherein the glass frit further includes greater than 0 and up to about 7 parts by weight of lithium oxide (Li2O) based on 100 parts by weight of the glass frit. ### Claim 13 (depends on 11) The composite of claim 11, wherein an amount of the glass frit is about 40 to 55 parts by weight based on total weight of the composition. ### Claim 14 A plasma display panel comprising: a front substrate; a rear substrate positioned opposite the front substrate; and a dielectric layer on the front substrate, the dielectric layer including a glass frit a binder, a dispersant, a plasticizer, and a solvent, wherein the glass frit includes about 20 to 35 parts by weight of zinc oxide (ZnO), about 30 to 50 parts by weight of boron oxide (13203), about 5 to 25 parts by weight of silicon oxide (SiO2), about 0.1 to 10 parts by weight of aluminum oxide (Al2O3), and about 5 to 20 parts by weight of potassium oxide (1(20) based on 100 parts by weight of the glass frit, wherein the binder includes about 50 to 85 parts by weight of a first monomer, about 10 to 30 parts by weight of a second monomer, and about 1 to 20 parts by weight of a third monomer based on 100 parts by weight of the binder, wherein the dispersant includes a polyamineamide-based compound. ### Claim 15 (depends on 14) The plasma display panel of claim 14, wherein the glass frit further includes greater than 0 and up to about 7 parts by weight of lithium oxide (Li2O). ### Claim 16 (depends on 14) The plasma display panel of claim 14, wherein the dielectric layer has a withstanding voltage of substantially 3 kv to 5 kv.