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 having a laminated structure is formed at a position facing one of the plurality of spacers in the first region of the TFT substrate, wherein the first layer includes a first conductive layer, an insulating layer, and a second conductive layer that is a transparent conductive layer,
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, and
the first conductive layer and the second conductive layer of the second layer structure are electrically separated from the first conductive layer or the second conductive layer of the first layer structure.
2. The liquid crystal display device according to claim 1 , wherein the first conductive layer is a metal layer, and the first conductive layer is formed between the insulating layer and the TFT substrate.
3. The liquid crystal display device according to claim 2 , wherein the TFT substrate includes a TFT, a pixel electrode connected to the TFT, and a common electrode opposed to the pixel electrode, and
the second conductive layer is the common electrode.
4. The liquid crystal display device according to claim 2 , wherein the first conductive layer in the first layer structure is a video signal line.
5. The liquid crystal display device according to claim 2 , wherein the first conductive layer in the first layer structure is a scanning line.
6. The liquid crystal display device according to claim 1 , wherein a light shielding film and the overcoat film are laminated on a portion where the spacer is formed in the first region and the second region of the counter substrate.