4 results about "Liquid crystal polymer substrate" patented technology

The invention discloses a high-temperature-resistant liquid crystal polymer substrate for ultrathin flexible display, which belongs to the technical field of flexible display and comprises a modified liquid crystal polymer and a functional additive dispersed in the modified liquid crystal polymer. The modified liquid crystal polymer is prepared by polymerizing a monomer composition, and is specifically prepared from 38 to 42 parts of p-hydroxybenzoic acid, 28 to 30 parts of 4, 4 '-biphenol, 5.6 to 6.0 parts of terephthalic acid, 4.4 to 5.0 parts of 2, 6-naphthalic acid, 2.7 to 3.3 parts of isophthalic acid, 9 to 11 parts of 2, 2-bis (3, 5-difluoro-4-hydroxyphenyl) hexafluoropropane, 4.5 to 5.5 parts of N, N'-dihydroxypyromellitic diamine, 9 to 11 parts of 9, 9-bis [4-(4-methoxycarbonyl phenoxy) phenyl] fluorene and 1, 2-bis (4-(4-methoxycarbonyl phenoxy) phenyl] fluorene. The component A is prepared from 5.5 to 6.5 parts of 1, 4-cyclohexanedimethanol; the functional additive comprises an azobenzene derivative, a hot acid generator and a hydrogen bond enhancer; through the synergistic effect of a specific monomer combination, a functional additive and an optimization process, the technical bottleneck that heat resistance, transparency, dimensional stability and flexibility of an existing material are difficult to consider at the same time is broken through.

The application discloses an electrolyte solution based on an etching restraint system, which is used for etching a copper layer and a liquid crystal polymer layer of a liquid crystal polymer substrate and forming micropores; the electrolyte solution comprises an etchant precursor and a restraint agent; the electrolyte solution comprises a copper layer electrolyte solution and a liquid crystal polymer layer electrolyte solution which are used for etching the copper layer and the liquid crystal polymer layer respectively; the etchant precursor in the electrolyte solution of the copper layer is FeCl2, and the restraint agent is SnCl2; the etchant precursor in the electrolyte solution of the liquid crystal polymer layer is potassium manganate, and the restraint agent is hydrogen peroxide. The electrolyte solution based on the etching restraint system can be used for etching the copper layer and the LCP layer of the LCP flexible substrate based on the etching restraint technology, and can process micropores with small diameters and high depth-width ratios (10-15) on the LCP flexible substrate.

A multilayer board includes laminates. Each of the laminates includes a liquid crystal polymer substrate and a metal layer. Each of the liquid crystal polymer substrates has a melting point. The number of the liquid crystal polymer substrates is an even number, they include first and second middle substrates that are located in the most middle position and respectively have first and second melting points that are substantially same. The first or second melting point is lowest among the melting points. The melting points increase in a direction away from the first and second middle substrates.

This invention discloses a high-temperature resistant liquid crystal polymer substrate for ultra-thin flexible displays, belonging to the field of flexible display technology. The substrate of this invention comprises a modified liquid crystal polymer and functional additives dispersed therein. The modified liquid crystal polymer is polymerized from a monomer composition, specifically consisting of 38-42 parts of p-hydroxybenzoic acid, 28-30 parts of 4,4'-biphenylhydrazine, 5.6-6.0 parts of terephthalic acid, 4.4-5.0 parts of 2,6-naphthalenedicarboxylic acid, 2.7-3.3 parts of isophthalic acid, and 2,2-bis(3,5-difluoro-4-hydroxybenzene). The composition comprises 9-11 parts of hexafluoropropane, 4.5-5.5 parts of N,N'-dihydroxypyromellitic acid diamine, 9-11 parts of 9,9-bis[4-(4-methoxycarbonylphenoxy)phenyl]fluorene, and 5.5-6.5 parts of 1,4-cyclohexanediethanol; the functional additives include azobenzene derivatives, thermal acid generators, and hydrogen bond enhancers; the present invention overcomes the technical bottleneck of existing materials in achieving a balance between heat resistance, transparency, dimensional stability, and flexibility through the synergistic effect of specific monomer combinations, functional additives, and optimized processes.