Patent ID: 7151581

Claim:
A liquid crystal display device comprising: a first substrate and a second substrate; a liquid crystal layer interposed between at least the first substrate and the second substrate; wherein the first substrate includes a plurality of gate lines, a plurality of source lines arranged substantially orthogonal to the plurality of gate lines, a plurality of switching elements disposed in the vicinity of crossings of the gate lines and source lines, and a plurality of pixel electrodes electrically connected to the plurality of switching elements; wherein the second substrate includes a counter electrode; a plurality of pixel regions are formed via at least the plurality of pixel electrodes, the counter electrode and the liquid crystal layer interposed between the plurality of pixel electrodes and the counter electrode; wherein each of the plurality of pixel regions includes a reflection region and a transmission region, wherein light reflected in the reflection regions and light transmitted through the transmission regions are utilized in displaying an image; wherein the first substrate includes a reflection electrode region provided in at least the reflection region and a transmission electrode region provided in at least the transmission region; wherein the reflection electrode region is higher than the transmission electrode region, forming a step on a surface of the first substrate, and thus a thickness of the liquid crystal layer in the reflection region is smaller than a thickness of the liquid crystal layer in the transmission; and wherein a reflection layer of the reflection electrode region is at least partially formed on an interlayer insulating film, and the interlayer insulating film has a plurality of round protrusions on a surface thereof.