POLARIZER AND FABRICATION METHOD THEREOF, DISPLAY PANEL, AND DISPLAY DEVICE

• US 20160238766A1
• Filed: 02/02/2016
• Published: 08/18/2016
• Est. Priority Date: 02/13/2015
• Status: Active Grant

• Current Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Original Assignee: Shanghai Tianma Micro-Electronics Company Limited (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
• Inventors: HUANG, ZHONGSHOU, ZHANG, LONG, CAO, ZHAOKENG
• Granted Patent: US 10,295,715 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/305 including organic materials, e.g. polymeric layers
• CPC Class Codes: G02B 5/3058 comprising electrically conductive elements, e.g. wire grids, conductive particles
• CPC Class Codes: G02F 1/133528 Polarisers
• CPC Class Codes: G02F 1/133538 with spatial distribution of the polarisation direction

Abstract

A polarizer and fabrication method thereof, a display panel and a display device are provided. The polarizer includes an organic film capable of being aligned during a polarization treatment. The organic film includes at least one first region having a first polarization axis and at least one second region having a second polarization axis. A direction of the first polarization axis is different from a direction of the second polarization axis.

Claims

1. A polarizer, comprising:

an organic film capable of being aligned during a polarization treatment,

wherein the organic film includes at least one first region having a first polarization axis and at least one second region having a second polarization axis, and

a direction of the first polarization axis is different from a direction of the second polarization axis.

2. The polarizer according to claim 1, wherein:

the polarization treatment includes a high-energy treatment of the organic film.

3. The polarizer according to claim 2, wherein:

the polarization treatment includes irradiating the organic film with light or electromagnetic waves.

4. The polarizer according to claim 3, wherein:

the polarization treatment includes irradiating the organic film with one or more of ultraviolet (UV) light, infrared light, far infrared light, electron beams, X-rays, ion beams and electromagnetic waves.

5. The polarizer according to claim 1, wherein the organic film further includes:

a base-material; and

a polarizing-material doped into the base-material.

6. The polarizer according to claim 5, wherein:

the polarizing-material is a dichroic organic dye.

7. The polarizer according to claim 5, wherein:

the polarizing-material is capable of being aligned when irradiated by the light or the electromagnetic waves.

8. The polarizer according to claim 7, wherein:

the dichroic organic dye contains an azo group or a trans-stilbene group.

9. The polarizer according to claim 6, wherein:

the dichroic organic dye includes one or more of azo dye, anthraquinone dye, biphenyl dye, tri-phenyl methane dye and derivative, single or multi-methane dye, polycyclic dye and trans-stilbene dye.

10. The polarizer according to claim 8, wherein:

the dichroic organic dye incorporates electron donor groups or electron acceptor groups at molecular terminals.

11. The polarizer according to claim 10, wherein:

the dichroic organic dye includes compounds having chemical structural formulas (1) or (2)

12. The polarizer according to claim 5, wherein:

the base-material is capable of being aligned when irradiated by the light or the electromagnetic waves.

13. The polarizer according to claim 12, wherein:

the base-material is polyimide, poly-cinnamoyl derivatives or azo-type optical alignment material.

14. The polarizer according to claim 1, wherein:

an area of the at least one first region is equal to an area of the at least one second region.

15. The polarizer according to claim 1, further including:

at least one third region having a third polarization axis; and

at least one fourth region having a fourth polarization axis,

wherein a direction of the third polarization axis is different from the direction of the first polarization axis and the direction of the second polarization axis, and

a direction of the fourth polarization axis is different from the direction of the first polarization axis and the direction of the second polarization axis.

16. A display panel including a polarizer according to claim 1, further includes:

a first substrate; and

a second substrate arranged opposite to the first substrate;

wherein the polarizer is disposed on at least one of the first substrate and the second substrate.

17. The display panel according to claim 16, wherein:

the polarizer is disposed on an inner surface or an outer surface of the at least one of the first substrate and the second substrate.

18. The display panel according to claim 16, wherein:

the first substrate is a color film substrate including a plurality of color films and a first organic layer, wherein the first organic layer is disposed on the plurality of color films; and

the second substrate is an array substrate including a plurality of pixel units, wherein each pixel unit includes a thin film transistor and a second organic layer disposed on the thin film transistors.

19. The display panel according to claim 18, wherein:

the first region or the second region in the polarizer corresponds to one or more pixel units.

20. The display panel according to claim 18, wherein:

the organic film includes the polarizing-material and the base-material; and

at least one of the first organic layer and the second layer is the base-material.

21. The display panel according to claim 18, wherein:

the polarizing-material and the base-material are doped into at least one of the first organic layer and the second organic layer.

22. A display device including a polarizer according to claim 1.

23. A polarizer fabrication method, comprising:

providing a substrate;

forming a polarizing material layer by coating a polarizing-material doped based-material or a polarizing-material doped based-material precursors on the substrate, wherein the polarizing material layer includes at least one first region and at least one second region;

providing a first photomask transparent to the at least one first region;

irradiating light or electromagnetic waves having a first polarization direction on the at least one first region;

rotating the substrate, such that an angle between the first polarization direction of the light or the electromagnetic waves and the polarizing material layer is changed;

providing a second photomask transparent to the at least one second region; and

irradiating the light or the electromagnetic waves having the first polarization direction on the at least one second region.

28. The polarizer fabrication method according to claim 23, further including:

pre-baking the polarizing material layer;

irradiating the light or the electromagnetic waves transmitted through the photomask on the polarizing material layer; and

post-baking the polarizing material layer.

29. The polarizer fabrication method according to claim 28, wherein:

the light or the electromagnetic waves has an energy of approximately 300 mj-1000 mj.

30. The polarizer fabrication method according to claim 28, wherein:

the pre-baking has a temperature of approximately 90°

C.-130°

C. and a time period of approximately 60 s-120 s.

31. The polarizer fabrication method according to claim 28, wherein:

the post-baking has a temperature of approximately 210°

C.-230°

C. and a time period of approximately 20 min-50 min.

24. A polarizer fabrication method, comprising:

providing a substrate;

forming a polarizing material layer by coating a polarizing-material doped based-material or a polarizing-material doped based-material precursors on the substrate, wherein the polarizing material layer includes at least one first region and at least one second region;

providing a first photomask transparent to the at least one first region;

irradiating light or electromagnetic waves having a first polarization direction on the at least one first region;

providing a second photomask transparent to the at least one second region; and

irradiating light or electromagnetic waves having a second polarization direction on the at least one second region.

25. The polarizer fabrication method according to claim 24, further including:

providing a metal grating converting unpolarized light or unpolarized electromagnetic waves incident on the metal grating to polarized light or polarized electromagnetic waves, such that the light or the electromagnetic waves transmitted through the metal grating have the first direction; and

rotating the metal grating by a certain angle after irradiating the light or the electromagnetic waves having the first polarization direction on the at least one first region, such that the light or the electromagnetic waves transmitted through the metal grating has the second polarization direction.

26. The polarizer fabrication method according to claim 25, wherein:

the metal grating has a comparable or an identical dimension as the at least one first region or the at least second region.

27. A polarizer fabrication method, comprising:

providing a substrate;

forming a polarizing material layer by coating a polarizing-material doped based-material or a polarizing-material doped based-material precursors on the substrate, wherein the polarizer includes at least one first region and at least one second region;

providing a photomask having at least one third-region corresponding to the at least one first region and at least one fourth-region corresponding to the at least one second region; and

irradiating light or electromagnetic waves transmitted through the photomask on the at least one first region and the at least one second region,

wherein the photomask converts unpolarized light or unpolarized electromagnetic waves incident on the photomask to polarized light or polarized electromagnetic waves, and the light or the electromagnetic waves transmitted through the at least one third-region and the at least one fourth-region have different polarization directions.