Transmission liquid crystal display having discotic molecular film
View Patent ↗An exemplary transmission liquid crystal display ( 200 ) includes a first substrate ( 215 ) and a second substrate ( 235 ); a liquid crystal layer ( 220 ) having liquid crystal molecules interposed between the first and second substrates; a front polarizer ( 211 ) disposed at an front surface of the first substrate, and a rear polarizer ( 231 ) disposed at a rear surface of the second substrate; a first quarter-wavelength compensation member ( 213 ) between the front polarizer and the first substrate; a second quarter-wavelength compensation member ( 234 ) between the rear polarizer and the second substrate; a first discotic molecular film ( 214 ) between the first quarter-wavelength compensation member and the first substrate; and a second discotic molecular film ( 234 ) between the second quarter-wavelength compensation member and the second substrate.
1. A transmission liquid crystal display, comprising:
a first substrate and a second substrate;
a liquid crystal layer having liquid crystal molecules between the first and second substrates;
a front polarizer disposed at a front surface of the first substrate, and a rear polarizer disposed at a rear surface of the second substrate;
a first quarter-wavelength compensation member between the front polarizer and the first substrate;
a second quarter-wavelength compensation member between the rear polarizer and the second substrate;
a first discotic molecular film between the first quarter-wavelength compensation member and the first substrate;
a front alignment film between the first substrate and the liquid crystal layer; and
a rear alignment film between the second substrate and the liquid crystal layer;
wherein a pretilt angle of liquid crystal molecules adjacent to the first and second substrates is in a range of 0 degrees to 15 degrees, and an alignment direction of the rear alignment film maintains an angle in a range from 0 degrees to 90 degrees relative to that of the front alignment film.
2. The transmission liquid crystal display as claimed in claim 1 , wherein an alignment direction of discotic liquid crystal molecules of the first discotic molecular film is parallel to a bisector of an angle defined by the alignment directions of the front and rear alignment films.
3. The transmission liquid crystal display as claimed in claim 1 , wherein a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first substrate is in a range of 0 degrees to 45 degrees.
4. A transmission liquid crystal display, comprising:
a first substrate and a second substrate;
a liquid crystal layer having liquid crystal molecules between the first and second substrates;
a front polarizer disposed at a front surface of the first substrate, and a rear polarizer disposed at a rear surface of the second substrate;
a first quarter-wavelength compensation member between the front polarizer and the first substrate;
a second quarter-wavelength compensation member between the rear polarizer and the second substrate;
a first discotic molecular film between the second quarter-wavelength compensation member and the second substrate;
a front alignment film between the first substrate and the liquid crystal layer; and
a rear alignment film between the second substrate and the liquid crystal layer;
wherein a pretilt angle of liquid crystal molecules adjacent to the first and second substrates is in a range of 0 degrees to 15 degrees, and an alignment direction of the rear alignment film maintains an angle in a range from 0 degrees to 90 degrees relative to that of the front alignment film.
5. The transmission liquid crystal display as claimed in claim 4 , wherein an alignment direction of discotic liquid crystal molecules of the first discotic molecular film is parallel to a bisector of an angle defined by the alignment directions of the front and rear alignment films.
6. The transmission liquid crystal display as claimed in claim 4 , wherein a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the second substrate is in a range of 0 degrees to 45 degrees.
7. The transmission liquid crystal display as claimed in claim 1 , wherein an alignment direction of discotic liquid crystal molecules of the first discotic molecular film is parallel to the alignment direction of the front alignment film, a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first substrate is in a range of 0 degrees to 45 degrees.
8. The transmission liquid crystal display as claimed in claim 1 , further comprising a second discotic molecular film between the second quarter-wavelength compensation member and the second substrate.
9. The transmission liquid crystal display as claimed in claim 8 , wherein an alignment direction of discotic liquid crystal molecules of the second discotic molecular film is parallel to the alignment direction of the rear alignment film, a pretilt angle of discotic liquid crystal molecules of the second discotic molecular film adjacent to the second quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the second discotic molecular film adjacent to the second substrate is in a range of 0 degrees to 45 degrees.
10. The transmission liquid crystal display as claimed in claim 4 , wherein an alignment direction of discotic liquid crystal molecules of the first discotic molecular film is parallel to the alignment direction of the front alignment film, a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first substrate is in a range of 0 degrees to 45 degrees.
11. The transmission liquid crystal display as claimed in claim 4 , further comprising a second discotic molecular film between the second quarter-wavelength compensation member and the second substrate.
12. The transmission liquid crystal display as claimed in claim 11 , wherein an alignment direction of discotic liquid crystal molecules of the second discotic molecular film is parallel to the alignment direction of the rear alignment film, a pretilt angle of discotic liquid crystal molecules of the second discotic molecular film adjacent to the second quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the second discotic molecular film adjacent to the second substrate is in a range of 0 degrees to 45 degrees.
13. A transmission liquid crystal display, comprising:
a first substrate and a second substrate;
a liquid crystal layer having liquid crystal molecules interposed between the first and second substrates;
a front polarizer disposed at a front surface of the first substrate, and a rear polarizer disposed at a rear surface of the second substrate;
a first quarter-wavelength compensation member between the front polarizer and the first substrate;
a second quarter-wavelength compensation member between the rear polarizer and the second substrate;
a first discotic molecular film between the first quarter-wavelength compensation member and the first substrate;
a front alignment film between the first substrate and the liquid crystal layer; and
a rear alignment film between the second substrate and the liquid crystal layer;
wherein an alignment direction of discotic liquid crystal molecules of the first discotic molecular film is parallel to a bisector of an angle defined by the alignment directions of the front and rear alignment films.
14. The transmission liquid crystal display as claimed in claim 13 , wherein a pretilt angle of liquid crystal molecules adjacent to the first and second substrates is in a range of 0 degrees to 15 degrees, and an alignment direction of the rear alignment film maintains an angle in a range from 0 degrees to 90 degrees relative to that of the front alignment film.
15. The transmission liquid crystal display as claimed in claim 13 , wherein a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the first discotic molecular film adjacent to the first substrate is in a range of 0 degrees to 45 degrees.
16. The transmission liquid crystal display as claimed in claim 15 , further comprising a second discotic molecular film between the second quarter-wavelength compensation member and the second substrate.
17. The transmission liquid crystal display as claimed in claim 16 , wherein a pretilt angle of discotic liquid crystal molecules of the second discotic molecular film adjacent to the second quarter-wavelength compensation member is in a range of 45 degrees to 90 degrees, and a pretilt angle of discotic liquid crystal molecules of the second discotic molecular film adjacent to the second substrate is in a range of 0 degrees to 45 degrees.