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 and 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,
wherein
the TFT substrate has a plurality of TFT, a plurality of signal lines for transmitting a scan signal and an image signal, a plurality of pixel electrode which between the signal lines and the liquid crystal layer, a plurality of counter electrodes which between the pixel electrode and the liquid crystal layer,
the counter substrate has a plurality of color filter and a plurality of spacers in an inside region of the sealing member,
the spacers are disposed on both of a display region and a non-display region in the inside region of the sealing material of the TFT,
the spacers of the display region is arranged opposite to the signal line,
each of the spacers of the non-display region is arranged opposing to a transparent conductive layer formed on a same layer as the counter electrode.
2. The liquid crystal display device according to claim 1 , wherein a gate insulating layer, a metal layer made of the same material as the signal lines, and an inorganic passivation layer are formed between the transparent conductive layer and the TFT substrate.
3. The liquid crystal display device according to claim 1 , wherein a gate insulating layer, a first metal layer made of the same material as the signal lines, a second metal layer made of the same material as a source electrode of the TFT, a semiconductor layer made of the same material as a semiconductor layer of the TFT and an inorganic passivation layer are formed between the transparent conductive layer and the TFT substrate.
4. The liquid crystal display device according to claim 1 , wherein a black matrix layer and an overcoat layer are formed between the counter substrate and the spacer on the non-display region.
5. The liquid crystal display device according to claim 1 , wherein the spacer on the non-display region is formed directly on the counter substrate.
6. The liquid crystal display device according to claim 1 , wherein each of the pixel electrode and the counter electrode is made of a transparent electrode.
7. The liquid crystal display device according to claim 1 , wherein the counter electrode has a plurality of slits at a position overlapping the pixel electrode, and an area wider than the width of the signal line at a position overlapping the signal line.
8. The liquid crystal display device according to claim 7 , wherein the spacer on the display region is disposed on the counter electrode overlapping with the signal line.