Liquid crystal display device with layers of different color filters covering light shielding films
View Patent ↗Unevenness due to the influence of a mesh when a sealing material for bonding a TFT substrate and a counter substrate together is formed on the counter substrate by screen printing is prevented. Light shielding films are extended in the horizontal direction and arranged in the vertical direction. Red color filters, blue color filters, and green color filters are extended in the vertical direction at predetermined intervals. The blue color filters are extended also in the horizontal direction so as to cover the light shielding films. In a cross section along the red color filter and the green color filter, the level of a portion above the light shielding film is higher compared with that of the other portion by the thicknesses of the blue color filter and the light shielding film. In screen printing, since the high portion serves as a stopper for the mesh, the occurrence of unevenness due to the mesh can be prevented.
1. A liquid crystal display device comprising:
a TFT (Thin Film Transistor) substrate at which pixels each including a pixel electrode and a TFT are formed in a matrix shape; a counter substrate at which color filters are formed; and liquid crystal interposed between the TFT substrate and the counter substrate, the TFT substrate and the counter substrate being bonded together via a sealing material formed on a periphery of the counter substrate, wherein
at the counter substrate, light shielding films are extended in a first direction and arranged in a second direction which is transverse to the first direction, red color filters are extended in the second direction and arranged in the first direction, blue color filters are extended in the second direction and arranged in the first direction, green color filters are extended in the second direction and arranged in the first direction,
color filters of one color among the red color filters, the blue color filters, and the green color filters are also extended in the first direction so as to cover the light shielding films, color filters of another color are formed in portions where the color filters of one color are extended in the first direction so as to provide color filters of two layers of one layer of color filters of the one color and another layer of the another color, and
an overcoat film is formed so as to cover the red color filters, the blue color filters, and the green color filters, and an alignment film is formed so as to cover the overcoat film.
2. The liquid crystal display device according to claim 1 , wherein a difference in height between a portion where the color filters of two layers are formed on the light shielding film and a portion where the light shielding film is not formed is 600 nm or more and 1.8 μm or less.
3. The liquid crystal display device according to claim 1 , which is an IPS (In-Plane Switching) system liquid crystal display device.
4. A liquid crystal display device comprising:
a TFT (Thin Film Transistor) substrate at which pixels each including a pixel electrode and a TFT are formed in a matrix shape; a counter substrate at which color filters are formed; and liquid crystal interposed between the TFT substrate and the counter substrate, the TFT substrate and the counter substrate being bonded together via a sealing material formed on a periphery of the counter substrate, wherein
at the counter substrate, light shielding films are extended in a first direction and arranged in a second direction, red color filters are extended in the second direction and arranged in the first direction which is transverse to the first direction, and extended in the first direction and arranged in the second direction so as to cover the light shielding films, blue color filters are extended in the second direction and arranged in the first direction, and extended in the first direction and arranged in the second direction so as to cover the light shielding films, green color filters are extended in the second direction and arranged in the first direction, and extended in the first direction and arranged in the second direction so as to cover the light shielding films, and
an overcoat film is formed so as to cover the red color filters, the blue color filters, and the green color filters, and an alignment film is formed so as to cover the overcoat film.
5. The liquid crystal display device according to claim 4 , wherein a difference in height between a portion where the light shielding film is formed and a portion where the light shielding film is not formed is 600 nm or more and 1.8 μm or less.
6. The liquid crystal display device according to claim 4 , which is an IPS (In-Plane Switching) system liquid crystal display device.