Display device

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Quick Facts

Patent No.: US 10,197,858
App. No.: 15/876,254
Granted: Feb 5, 2019
Kind: B2

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Abstract

According to one embodiment, a display device includes a first substrate, a second substrate, a sealant, a liquid crystal layer, an organic insulating film, an alignment film and an inorganic insulating film. The second substrate is opposed to the first substrate. The sealant attaches the first substrate and the second substrate to each other. The liquid crystal layer is arranged between the first substrate and the second substrate. The organic insulating film, the alignment film and the inorganic insulating film are provided on the first substrate. The alignment film contacts the liquid crystal layer. The inorganic insulating film is located between the alignment film and the organic insulating film. At least part of the alignment film contacts the organic insulating film.

Claims (63)

1. A display device comprising:

a first substrate;

a second substrate facing the first substrate;

a sealant which attaches the first substrate and the second substrate to each other;

a liquid crystal layer arranged between the first substrate and the second substrate;

an organic insulating film provided on the first substrate;

an alignment film provided on the first substrate and contacting the liquid crystal layer; and

an inorganic insulating film provided on the first substrate and located between the alignment film and the organic insulating film, wherein

at least part of the alignment film contacts the organic insulating film.

2. The display device of claim 1 , wherein

the first substrate and the second substrate have a display area which displays an image, and

the alignment film contacts the organic insulating film on an inner side from the sealant and on an outer side from the display area.

3. The display device of claim 1 , wherein

the first substrate and the second substrate have a display area which displays an image, and

the alignment film does not contact the organic insulating film and contacts the inorganic insulating film in the display area.

4. The display device of claim 2 , further comprising:

a transparent conductive film formed on the first substrate and contacting the alignment film and the inorganic insulating film in the display area, wherein

the sealant has a first area, and a second area located on an outer side from the first area, and

the alignment film contacts the transparent conductive film in the first area, and contacts the organic insulating film in the second area.

5. The display area of claim 3 , further comprising:

a transparent conductive film formed on the first substrate and contacting the alignment film and the inorganic insulating film in the display area, wherein

the sealant has a first area, and a second area located on an outer side from the first area, and

the alignment film contacts the transparent conductive film in the first area, and contacts the organic insulating film in the second area.

6. The display device of claim 4 , wherein

the sealant further comprises a third area on an outer side from the second area, and

the alignment film and the organic insulating film contact the inorganic insulating film in the third area.

7. The display device of claim 5 , wherein

the sealant further comprises a third area on an outer side from the second area, and

the alignment film and the organic insulating film contact the inorganic insulating film in the third area.

8. The display device of claim 4 , wherein

a voltage is applied to the transparent conductive film in the second area.

9. The display device of claim 5 , wherein

a voltage is applied to the transparent conductive film in the second area.

10. The display device of claim 6 , wherein

a voltage is applied to the transparent conductive film in the second area.

11. The display device of claim 7 , wherein

a voltage is applied to the transparent conductive film in the second area.

12. The display device of claim 2 , wherein