To promote fast and accurate identification of a pixel by forming symbols/marks to identify an address on a color filter substrate.

The liquid crystal display device has: an array substrate having a plurality of scanning lines arranged in parallel to one another, a plurality of signal lines arranged in a direction orthogonal to the scanning lines, and thin film transistors arranged in the vicinity of intersections of the scanning lines and the signal lines on a transparent insulating substrate; a color filter substrate 18 placed opposite to the array substrate via a seal member and having a plurality of color layers; and a liquid crystal composition interposed between the array substrate and the color filter substrate, and is characterized in that it has first indexes 16, 17 for pixel identification on the color filter substrate side.