Provided are a laminate, a circuit board, and a liquid crystal polymer (LCP) film comprised therein. The laminate comprises a metal foil and an LCP film. The LCP film in the laminate has a dissipation factor before water absorption (Df′.sub.0), a dissipation factor after water absorption (Df′.sub.1), and a relative percentage difference between dissipation factors (ΔDf′), which is calculated by the following equation: $\Delta {\mathrm{Df}}^{\prime }\left(\%\right)=\frac{.Math.{\mathrm{Df}}_1^{\prime }-{\mathrm{Df}}_0^{\prime }.Math.}{{\mathrm{Df}}_0^{\prime }}\times 100\%;$
wherein ΔDf′ may be less than or equal to 16%. By controlling ΔDf′ of the LCP film in the laminate, the insertion loss of a circuit board comprising a laminate during signal transmission in low-, medium-, and/or high-frequency bands is decreased and/or inhibited. In addition, the difference between the insertion losses of signal transmission before and after water absorption is decreased, so the laminate is suitable for high-end or outdoor high-frequency electronic products.

A liquid crystal polyester resin for laminate, wherein, in a molecular weight distribution of an absolute molecular weight measured by a gel permeation chromatograph/light scattering method, an area fraction of a portion having an absolute molecular weight of 10,000 or less is 10 to 40%, and an area fraction of a portion having an absolute molecular weight of 50,000 or more is 3 to 20%, relative to 100% of the total peak area.

A compact camera module that contains a generally planar base on which is mounted a lens barrel is provided. The base, barrel, or both are molded from a polymer composition that includes a thermotropic liquid crystalline polymer and a plurality of mineral fibers (also known as “whisker”). The mineral fibers have a median width of from about 1 to about 35 micrometers and constitute from about 5 wt. % to about 60 wt. % of the polymer composition.

Provided is a composition, with which it is possible, by means of a simple application process, to form an organic film that has excellent performance, such as optical and electrical properties, and exhibits optical anisotropy. This composition, which exhibits lyotropic liquid crystallinity, contains: a polymer (P) having an acidic functional group; water; and a compound (A) that is at least one selected from the group consisting of a basic monomer and a base-generating agent. The composition contains: a polymer (P) having a partial structure shown in formula (0); water; and a compound (A) that is at least one selected from the group consisting of a basic monomer and a base-generating agent. Formula (0) has at least one acidic functional group.

Provided are an LCP film and a laminate comprising the same. The LCP film is made of an LCP resin comprising a structural unit represented by Formula (1): -L.sub.1-Ar-L.sub.2- (1), wherein -L.sub.1- and -L.sub.2- are respectively —O— or —CO—; —Ar— is an arylene group. Formula (1) comprises structural units

##STR00001##

Based on a total molar number of the structural unit represented by Formula (1), a molar number of the structural unit represented by Formula (I) is in the range from 15 mole % to 40 mole %, and a sum of molar numbers of the structural units represented by Formulae (I) and (II) is in the range from 80 mole % to 100 mole %. The LCP film has a thickness and a transmittance, wherein when values of the thickness (in μm) and the transmittance are put into Formula (III), the obtained value is from 0.055 to 0.090. Formula (III): Log(1/TT %)/(Thickness).sup.0.5.

Provided are a laminate, a circuit board, and a liquid crystal polymer (LCP) film comprised therein. The laminate comprises a metal foil and an LCP film. The LCP film in the laminate has a dissipation factor before water absorption (Df′.sub.0), a dissipation factor after water absorption (Df′.sub.1), and a relative percentage difference between dissipation factors (ΔDf′), which is calculated by the following equation:

[00001]$\Delta .Math.D.Math.f^{\prime }.Math..Math.\left(\%\right)=\frac{.Math.{\mathrm{Df}}_1^{\prime }-D.Math.f_0^{\prime }.Math.}{D.Math.f_0^{\prime }}\times 1.Math.00.Math.\%;$

wherein ΔDf′ may be less than or equal to 16%.

By controlling ΔDf′ of the LCP film in the laminate, the insertion loss of a circuit board comprising a laminate during signal transmission in low-, medium-, and/or high-frequency bands is decreased and/or inhibited. In addition, the difference between the insertion losses of signal transmission before and after water absorption is decreased, so the laminate is suitable for high-end or outdoor high-frequency electronic products.

Provided are a liquid crystal polymer film (LCP film) and a laminate comprising the same. The LCP film has a first surface and a second surface opposite each other, and the first surface has an arithmetical mean height of a surface (Sa) less than 0.32 μm. The LCP film with proper Sa is suitable to be stacked with a metal foil, such that a laminate comprising the LCP film can have an advantage of low insertion loss.

Provided are a liquid crystal polymer (LCP) film and a laminate comprising the same. The LCP film has a first surface and a second surface opposite each other, and a Kurtosis (Rku) of the first surface ranges from 3.0 to 60.0. With the Rku, the LCP film is able to improve the peel strength with a metal foil and ensure that a laminate comprising the same maintains the merit of low insertion loss.

Provided is a wholly aromatic liquid crystalline polyester resin having excellent heat resistance and formability. The wholly aromatic liquid crystalline polyester resin comprises structural units represented by the following formulae (I) to (V) as essential structural units, ##STR00001##
wherein the composition ratio (mol %) of the structural units (I) to (V) in the wholly aromatic liquid crystalline polyester satisfies the following conditions: 50 mol %≤structural unit (I)≤75 mol %; 6 mol %≤structural unit (II)≤20 mol %; 1 mol %≤structural unit (III)≤21.5 mol %; 0.5 mol %≤structural unit (IV)≤10.5 mol %; 2.5 mol %≤structural unit (V)≤22 mol %; structural unit (III)>structural unit (IV).

The present invention relates to a pellet mixture including a pellet of a liquid crystal polyester resin composition which contains a liquid crystal polyester resin and an inorganic filler, and a fine powder formed of an organic material, in which a volume average particle diameter of the fine powder is in a range of 10 μm to 200 μm, and an amount of the fine powder is in a range of 10 ppm to 2000 ppm with respect to the total mass of the pellet mixture.