Abstract A liquid crystal display panel for displaying colored images while controlling a transmission of light therethrough, comprises a first transparent base (1), a first transparent electrode (3) arranged on the first base, a second transparent base (2), a second transparent electrode (4) arranged on the second base (2) and facing the first electrode (3) and a liquid crystal layer (5) interposed between the picture element electrode and the scanning electrode and formed by a polymer dispersed liquid crystal material comprising (a) a polymeric medium (7), (b) a liquid crystal material (6) surrounded by surface means or a matrix consisting of the polymeric medium, and (c) a coloring material contained in the polymeric medium (7) and/or the liquid crystal material (6), the polymeric medium (7) optionally further comprising a visible ray-absorbing black material and the liquid crystal material (6) optionally comprising a pleochroic dye.
A liquid crystal display panel for colored images, comprising: a first transparent base; a first transparent electrode arranged on the first base; a second transparent base arranged in parallel to and spaced from the first base; a second transparent electrode arranged on the second base and facing and spaced from the first electrode; and a liquid crystal material layer interposed between the first electrode and the second electrode and comprising a polymer dispersed liquid crystal material which comprises (a) a polymeric medium comprising a transparent polymeric material, (b) a liquid crystal material surrounded by surface means or a matrix consisting of the polymeric medium, and (c) a coloring material contained in at least one member selected from the group consisting of the polymeric medium and the liquid crystal material.
Claim 2
Dependent Claim
35 words
The liquid crystal display panel as claimed in claim 1, wherein the polymeric medium further comprises a visible ray-absorbing material evenly mixed in the polymeric material, and the liquid crystal material contains the coloring material.
Claim 3
Dependent Claim
19 words
The liquid crystal display panel as claimed in claim 1, wherein the liquid crystal material contains a pleochroic dye.
Claim 4
Dependent Claim
31 words
The liquid crystal display panel as claimed in claim 1, wherein the coloring material consists of a member selected from the group consisting of red, green, and blue dyes and pigments.
Claim 5
Dependent Claim
34 words
The liquid crystal display panel as claimed in claim 1 or 2, wherein the coloring material is present in an amount of 0.1 to 10% based on the weight of the liquid crystal material.
Claim 6
Dependent Claim
30 words
The liquid crystal display panel as claimed in claim 2, wherein the visible ray-absorbing material comprises at least one member selected from the group consisting of black dyes and pigments.
Claim 7
Dependent Claim
32 words
The liquid crystal display panel as claimed in claim 2, wherein the visible ray-absorbing material is present in an amount of 1 to 20% based on the weight of the polymeric material.
Claim 8
Dependent Claim
32 words
The liquid crystal display panel as claimed in claim 3, wherein the pleolchroic dye is present in an amount of 0.1 to 10% based on the weight of the liquid crystal material.
Claim 9
Dependent Claim
31 words
The liquid crystal display panel as claimed in claim 1, wherein the liquid crystal material is present in an amount of 1 to 10 times the weight of the polymeric medium.
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