Reflection type liquid crystal display device

1. A reflection type liquid crystal display device comprising:

a first substrate having a plurality of reflection pixel electrodes, said reflection pixel electrodes each having at least two reflective regions, said reflective regions having different uneven surface structures with different average tilt angles;

a second substrate arranged opposite said first substrate;

a liquid crystal interposed between said first substrate and said second substrate; and

a front light member arranged at said second substrate side,

wherein a first average tilt angle of one of said reflective regions is different from a second average tilt angle of the other of said reflective regions and,

wherein each of said average tilt angles is obtained by measuring a gap of the uneven surface structures of said reflective regions.

2. The reflection type liquid crystal display device according to claim 1 , wherein said first average tilt angle is in a range of 1.3 to 3 times said second average tilt angle.

3. The reflection type liquid crystal display device according to claim 1 , wherein an area of a first reflective region of said reflective regions is in a range of 1 to 4 times an area of a second reflective region of said reflective regions.

4. The reflection type liquid crystal display device according to claim 1 , wherein a boundary between the reflective regions in said plurality of said reflection pixel electrodes is formed in an L-shaped step shape.

5. The reflection type liquid crystal display device according to claim 1 , wherein a first reflective region is arranged at an upper side of a surface of the display as compared with a remainder of said reflective regions.

6. The reflection type liquid crystal display device according to claim 1 ,

wherein at least one of said reflective regions has a first reflective characteristic region reflecting an incident light from said front light member, the incident light reflected in a direction perpendicular to a surface of said first substrate.

7. A reflection type liquid crystal display device comprising:

a first substrate having a plurality of reflection pixel electrodes, said reflection pixel electrodes each having at least two reflective regions having different uneven surface structures, wherein at least one of the reflective regions is a wide viewing angle reflective region with strong light scattering and at least one of the reflective regions is a high directivity reflective region with a small average tilt angle,

a second substrate arranged opposite said first substrate;

a liquid crystal interposed between said first substrate and said second substrate; and

a front light member arranged at said second substrate side,

wherein said small average tilt angle of said high directivity reflective region is smaller than a larger average tilt angle of said wide viewing angle reflective region.

8. The reflection type liquid crystal display device according to claim 7 , wherein said larger average tilt angle is in a range of 1.3 to 3 times larger than said smaller average tilt angle of said high directivity reflective region.

9. The reflection type liquid crystal display device according to claim 7 , wherein said larger average tilt angle is between approximately 6.5 degrees and approximately 9.5 degrees.

10. The reflection type liquid crystal display device according to claim 7 , wherein said smaller average tilt angle is between approximately 3.3 degrees and approximately 5 degrees.

11. The reflection type liquid crystal display device according to claim 7 , wherein an area of said high directivity reflective region is in a range of 1 to 4 times an area of said wide viewing angle reflective region.

12. The reflection type liquid crystal display device according to claim 7 , wherein a boundary between the wide viewing angle reflective region and the high directivity reflective region in said reflection pixel electrode is formed in an L-shaped step shape.

13. The reflection type liquid crystal display device according to claim 7 , wherein said wide viewing angle reflective region is arranged at an upper side of a surface of the display as compared with said high directivity reflective region.

14. A reflection type liquid crystal display device comprising:

a first substrate having a plurality of reflection pixel electrodes, said reflection pixel electrodes each having at least two reflective regions, said reflective regions having different uneven surface structures with different average tilt angles;

a second substrate arranged opposite said first substrate;

a liquid crystal interposed between said first substrate and said second substrate; and

a front light member arranged at said second substrate side,

wherein a first average tilt angle of one of said reflective regions is different from a second average tilt angle of the other of said reflective regions,

wherein each of said average tilt angles is obtained by measuring a gap of the uneven surface structures of said reflective regions and,

wherein said second substrate is formed with a first color filter corresponding to a first reflective region and a second color filter corresponding to a second reflective region, said first color filter has a chromaticity range higher than that of said second color filter, and said second color filter has a transmissivity higher than that of said first color filter.

15. A reflection type liquid crystal display device comprising:

a first substrate having a plurality of reflection pixel electrodes, said reflection pixel electrodes each having at least two reflective regions having different uneven surface structures, wherein at least one of the reflective regions is a wide viewing angle reflective region with strong light scattering and at least one of the reflective regions is a high directivity reflective region with a small average tilt angle,

a second substrate arranged opposite said first substrate;

a liquid crystal interposed between said first substrate and said second substrate; and

a front light member arranged at said second substrate side,

wherein said small average tilt angle of said high directivity reflective region is smaller than a larger average tilt angle of said wide viewing angle reflective region and,

wherein said second substrate is formed with a first color filter corresponding to said wide viewing angle reflective region and a second color filter corresponding to said high directivity reflective region, said second color filter has a chromaticity range higher than that of said first color filter, and said first color filter has a transmissivity higher than that of said second color filter.

16. The reflection type liquid crystal display device according to claim 15 , wherein said first average tilt angle is in a range of 1.3 to 3 times said second average tilt angle.

17. The reflection type liquid crystal display device according to claim 16 , wherein said larger average tilt angle is in a range of 1.3 to 3 times larger than said smaller average tilt angle of said high directivity reflective region.

18. The reflection type liquid crystal display device according to claim 16 , wherein said larger average tilt angle is between approximately 6.5 degrees and approximately 9.5 degrees.

19. The reflection type liquid crystal display device according to claim 16 , wherein said smaller average tilt angle is between approximately 3.3 degrees and approximately 5 degrees.

20. The reflection type liquid crystal display device according to claim 16 , wherein an area of said high directivity reflective region is in a range of 1 to 4 times an area of said wide viewing angle reflective region.

21. The reflection type liquid crystal display device according to claim 16 , wherein a boundary between the wide viewing angle reflective region and the high directivity reflective region in said reflection pixel electrode is formed in an L-shaped step shape.

22. The reflection type liquid crystal display device according to claim 16 , wherein said wide viewing angle reflective region is arranged at an upper side of a surface of the display as compared with said high directivity reflective region.

23. The reflection type liquid crystal display device according to claim 15 , wherein an area of a first reflective region of said reflective regions is in a range of 1 to 4 times an area of a second reflective region of said reflective regions.

24. The reflection type liquid crystal display device according to claim 15 , wherein a boundary between the reflective regions in said plurality of said reflection pixel electrodes is formed in a step shape.

25. The reflection type liquid crystal display device according to claim 15 , wherein a first reflective region is arranged at an upper side of a surface of the display as compared with a remainder of said reflective regions.

26. The reflection type liquid crystal display device according to claim 15 ,

wherein at least one of said reflective regions has a first reflective characteristic region reflecting an incident light from said front light member, the incident light reflected in a direction perpendicular to a surface of said first substrate.