Color filter substrate and liquid crystal display panel including the same
View Patent ↗A color filter substrate includes a substrate, a black matrix disposed on the substrate, a color filter on a sub-pixel area partitioned by the black matrix, a common electrode disposed on the color filter to receive a common voltage, and an anti-reflective layer configured to prevent the reflection of light in the color filter substrate.
1. A color filter substrate, comprising:
a substrate;
a black matrix disposed on the substrate;
a color filter on a sub-pixel area partitioned by the black matrix;
an overcoat layer disposed on the color filter to planarize the color filer;
an anti-reflective layer configured to prevent the reflection of light in the color filter substrate; and
a common electrode disposed on the overcoat layer to receive a common voltage,
wherein the anti-reflective layer comprises at least one of:
a first anti-reflective layer disposed between the substrate and the color filter and having a refractive index between a refractive index of the substrate and a refractive index of the color filter;
a second anti-reflective layer disposed between the color filter and the overcoat layer and having a refractive index between the refractive index of the color filter and a refractive index of the overcoat layer; and
a third anti-reflective layer disposed between the overcoat layer and the common electrode and having a refractive index between the refractive index of the overcoat layer and a refractive index of the common electrode,
wherein each of the first anti-reflective layer and the second anti-reflective layer comprises one of Al 2 O 3 , SiOx, MgF 2 AlF 2 CeF 3 LaF 3 and NdF 3 .
2. The color filter substrate of claim 1 , further comprising an alignment layer on the overcoat layer to align liquid crystal molecules.
3. A color filter substrate, comprising:
a substrate;
a black matrix disposed on the substrate;
a color filter on a sub-pixel area partitioned by the black matrix;
an overcoat layer disposed on the color filter to planarize the color filer;
an anti-reflective layer configured to prevent the reflection of light in the color filter substrate; and
a common electrode disposed on the overcoat layer to receive a common voltage,
wherein the anti-reflective layer comprises at least one of:
a first anti-reflective layer disposed between the substrate and the color filter and having a refractive index between a refractive index of the substrate and a refractive index of the color filter;
a second anti-reflective layer disposed between the color filter and the overcoat layer and having a refractive index between the refractive index of the color filter and a refractive index of the overcoat layer; and
a third anti-reflective layer disposed between the overcoat layer and the common electrode and having a refractive index between the refractive index of the overcoat layer and a refractive index of the common electrode,
wherein the third anti-reflective layer comprises silicon nitride (SiNx).
4. A liquid crystal display panel, comprising:
a color filter substrate comprising:
a substrate;
a black matrix disposed on the substrate;
a color filter on a sub-pixel area partitioned by the black matrix;
an overcoat layer disposed on the color filter to planarize the color filter; and
an anti-reflective layer configured to prevent the reflection of light in the color filter substrate; and
a common electrode disposed on the overcoat layer to receive a common voltage;
a thin film transistor substrate opposing the color filter substrate, the thin film transistor substrate comprising a gate line, a data line, a thin film transistor connected to the gate line and the data line, and a pixel electrode connected to the thin film transistor; and
liquid crystal molecules disposed between the thin film transistor substrate and the color filter substrate,
wherein the anti-reflective layer comprises at least one of:
a first anti-reflective layer disposed between the substrate and the color filter and having a refractive index between a refractive index of the substrate and a refractive index of the color filter;
a second anti-reflective layer disposed between the color filter and the overcoat layer and having a refractive index between the refractive index of the color filter and a refractive index of the overcoat layer; and
a third anti-reflective layer disposed between the overcoat layer and the common electrode and having a refractive index between the refractive index of the overcoat layer and a refractive index of the common electrode,
wherein each of the first anti-reflective layer and the second anti-reflective layer comprises one of Al 2 O 3 , SiOx, MgF 2 , AlF 3 , CeF 3 , LaF 3 , and NdF 3 .
5. The liquid crystal display panel of claim 4 , wherein the color filter substrate further comprises an alignment layer disposed on the overcoat layer to align the liquid crystal molecules.
6. A liquid crystal display panel, comprising:
a color filter substrate comprising:
a substrate;
a black matrix disposed on the substrate;
a color filter on a sub-pixel area partitioned by the black matrix;
an overcoat layer disposed on the color filter to planarize the color filter; and
an anti-reflective layer configured to prevent the reflection of light in the color filter substrate; and
a common electrode disposed on the overcoat layer to receive a common voltage;
a thin film transistor substrate opposing the color filter substrate, the thin film transistor substrate comprising a gate line, a data line, a thin film transistor connected to the gate line and the data line, and a pixel electrode connected to the thin film transistor; and
liquid crystal molecules disposed between the thin film transistor substrate and the color filter substrate,
wherein the anti-reflective layer comprises at least one of:
a first anti-reflective layer disposed between the substrate and the color filter and having a refractive index between a refractive index of the substrate and a refractive index of the color filter;
a second anti-reflective layer disposed between the color filter and the overcoat layer and having a refractive index between the refractive index of the color filter and a refractive index of the overcoat layer; and
a third anti-reflective layer disposed between the overcoat layer and the common electrode and having a refractive index between the refractive index of the overcoat layer and a refractive index of the common electrode,
wherein the third anti-reflective layer comprises silicon nitride (SiNx).