Liquid crystal display

A semi-transmission liquid crystal display comprising

• a liquid crystal panel;
• a backlight unit to emit light to the liquid crystal panel;
• and
• a data driver to apply a data voltage to a data line of the liquid crystal panel;
• wherein, the liquid crystal panel comprises a TFT substrate which has a transmission area transmitting light from the backlight unit and a reflection area reflecting light from exterior, a color filter substrate which comprises a color filter layer having a concave area which is formed corresponding to the reflection area, and a liquid crystal layer which is sandwiched between the TFT substrate and the color filter substrate and having varying thickness according to the concave area;
• and
• the data driver applies the data voltage to the data line in the liquid crystal panel by a transmission voltage mode when the backlight unit is on and by a reflection voltage mode when the backlight unit is off,
• wherein a difference between a cellgap of a concave area of the color filter layer and a cellgap of a non-concave area is substantially the thickness of the color filter layer.

A semi-transmission liquid crystal display comprising

• a liquid crystal panel;
• a backlight unit to emit light to the liquid crystal panel;
• and
• a data driver to apply a data voltage to a data line of the liquid crystal panel;
• wherein, the liquid crystal panel comprises a TFT substrate which has a transmission area transmitting light from the backlight unit and a reflection area reflecting light from exterior, a color filter substrate which comprises a color filter layer having a concave area which is formed corresponding to the reflection area, and a liquid crystal layer which is sandwiched between the TFT substrate and the color filter substrate and having varying thickness according to the concave area;
• and
• the data driver applies the data voltage to the data line in the liquid crystal panel by a transmission voltage mode when the backlight unit is on and by a reflection voltage mode when the backlight unit is off,
• wherein the thickness of the color filter layer is between about 1 to about 1.5 μm, the thickness of the liquid crystal layer in a non-concave areas is between about 3 to about 4 μm, and the thickness of the liquid crystal layer in a concave area is between about 4 to about 5.5 μm.

A semi-transmission liquid crystal display comprising

• a liquid crystal panel;
• a backlight unit to emit light to the liquid crystal panel;
• and
• a data driver to apply a data voltage to a data line of the liquid crystal panel;
• wherein, the liquid crystal panel comprises a TFT substrate which has a transmission area transmitting light from the backlight unit and a reflection area reflecting light from exterior, a color filter substrate which comprises a color filter layer having a concave area which is formed corresponding to the reflection area, and a liquid crystal layer which is sandwiched between the TFT substrate and the color filter substrate and having varying thickness according to the concave area;
• and
• the data driver applies the data voltage to the data line in the liquid crystal panel by a transmission voltage mode when the backlight unit is on and by a reflection voltage mode when the backlight unit is off,
• wherein an average cellgap of the reflection area is larger than that of the trasmission area.

A semi-transmission liquid crystal display comprising

• a liquid crystal panel;
• a backlight unit to emit light to the liquid crystal panel;
• and
• a data driver to apply a data voltage to a data line of the liquid crystal panel;
• wherein, the liquid crystal panel comprises a TFT substrate which has a transmission area transmitting light from the backlight unit and a reflection area reflecting light from exterior, a color filter substrate which comprises a color filter layer having a concave area which is formed corresponding to the reflection area, and a liquid crystal layer which is sandwiched between the TFT substrate and the color filter substrate and having varying thickness according to the concave area;
• and
• the data driver applies the data voltage to the data line in the liquid crystal panel by a transmission voltage mode when the backlight unit is on and by a reflection voltage mode when the backlight unit is off,
• wherein a cellgap is substantially uniform except for at the concave area.