Liquid crystal display device and mother substrate
View Patent ↗In a liquid crystal display device including a TFT substrate and a counter substrate, when an organic passivation film is not formed in the TFT substrate, the distance between the TFT substrate and the counter substrate in the display area of a liquid crystal display panel is provided by a cylindrical spacer. Also, the distance in the area where pixels, scan lines, and image signal lines are not formed within the liquid crystal display panel is provided by the cylindrical spacer. In this case, it is necessary to form a mount. The layer structure of the mount is the same as that of the TFT substrate with which the cylindrical spacer in the display area comes into contact. This makes it possible to equalize the distance of the liquid crystal layer of the liquid crystal display panel without an increase in production cost, and to prevent uneven brightness or color.
1. A liquid crystal display panel comprising:
a TFT substrate,
a counter substrate facing the TFT substrate through a sealing member,
a liquid crystal layer is sandwiched between the TFT substrate and the counter substrate, and
a plurality of spacers formed on the counter substrate,
wherein
the TFT substrate has a first region, which is surrounded by the sealing member and overlapping with the liquid crystal layer, and a second region, which is not surrounded by the sealing member and not overlapping with the liquid crystal layer,
a first layer structure has a laminated structure of at least three layers, which includes a first layer made of a transparent conductive layer,
the first layer structure is formed in the first region of the TFT substrate at a position facing one or more spacers of the plurality of spacers,
a second layer structure, having at least the same laminated structure as the first layer structure, is provided in the second region of the TFT substrate at a position facing one or more spacers of the plurality of spacers, and
the first layer of the first layer structure is electrically separated from the first layer of the second layer structure.
2. The liquid crystal display device according to claim 1 , wherein the TFT substrate includes a TFT, a pixel electrode connected to the TFT, and a common electrode opposed to the pixel electrode,
the first layer of the first layer structure is the common electrode.
3. The liquid crystal display device according to claim 1 , wherein the first layer structure and the second layer structure include a second layer made of a metal layer, and
the second layer of the first layer structure-is electrically separated from the second layer of the second layer structure.
4. The liquid crystal display device according to claim 3 , wherein the second layer in the first layer structure is a video signal line.
5. The liquid crystal display device according to claim 3 , wherein the second layer in the first layer structure is a scanning line.
6. The liquid crystal display device according to claim 1 , wherein the second layer is formed between the first layer and the TFT substrate.
7. The liquid crystal display device according to claim 1 , wherein a light shielding film and the overcoat film are laminated on a portion where one or more spacers of the plurality of spacers is formed in the first region and the second region of the counter substrate.