Optical member and OLED display device
First Claim
Patent Images
1. An optical member, comprising:
- a metal electrode, a λ
/4 phase-difference plate and a linear polarization plate sequentially arranged in this order;
a λ
/2 phase-difference plate and a brightness enhancement film arranged between the λ
/4 phase-difference plate and the linear polarization plate;
wherein;
there is an angle between an absorption axis of the linear polarization plate and a polarization axis of the brightness enhancement film;
there is an angle between the polarization axis of the brightness enhancement film and a slow axis of the λ
/2 phase-difference plate;
the slow axis of the λ
/2 phase-difference plate is parallel to a slow axis of the λ
/4 phase-difference plate; and
an angle between the absorption axis of the linear polarization plate and the slow axis of the λ
/2 phase-difference plate is in a range from 30°
to 45°
.
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Abstract
The invention discloses an optical member and an OLED display including an optical member. The optical member includes: a metal electrode, a λ/4 phase-difference plate and a linear polarization plate sequentially arranged in this order. A λ/2 phase-difference plate and a brightness enhancement film are arranged between the λ/4 phase-difference plate and the linear polarization plate; there is an angle between an absorption axis of the linear polarization plate and a polarization axis of the brightness enhancement film; and there is an angle between the polarization axis of the brightness enhancement film and a slow axis of the λ/2 phase-difference plate. This arrangement can address the problem in the related art that faces the difficulty to improve the transmittivity of light in an optical member in an OLED display.
3 Citations
15 Claims
-
1. An optical member, comprising:
-
a metal electrode, a λ
/4 phase-difference plate and a linear polarization plate sequentially arranged in this order;a λ
/2 phase-difference plate and a brightness enhancement film arranged between the λ
/4 phase-difference plate and the linear polarization plate;wherein; there is an angle between an absorption axis of the linear polarization plate and a polarization axis of the brightness enhancement film; there is an angle between the polarization axis of the brightness enhancement film and a slow axis of the λ
/2 phase-difference plate;the slow axis of the λ
/2 phase-difference plate is parallel to a slow axis of the λ
/4 phase-difference plate; andan angle between the absorption axis of the linear polarization plate and the slow axis of the λ
/2 phase-difference plate is in a range from 30°
to 45°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 15)
-
-
11. An OLED display device comprising an optical member, the optical member comprising:
-
a metal electrode, a λ
/4 phase-difference plate and a linear polarization plate sequentially arranged in this order;a λ
/2 phase-difference plate and a brightness enhancement film arranged between the λ
/4 phase-difference plate and the linear polarization plate;wherein; there is an angle between an absorption axis of the linear polarization plate and a polarization axis of the brightness enhancement film; there is an angle between the polarization axis of the brightness enhancement film and a slow axis of the λ
/2 phase-difference plate;the slow axis of the λ
/2 phase-difference plate is parallel to a slow axis of the λ
/4 phase-difference plate;the metal electrode has a first side facing the λ
/4 phase-difference plate and an opposite side, an OLED light-emitting layer is arranged at the opposite side of the metal electrode; andan angle between the absorption axis of the linear polarization plate and the slow axis of the λ
/2 phase-difference plate is in a range from 30°
to 45°
. - View Dependent Claims (12, 13, 14)
-
Specification
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Current AssigneeTianma Microelectronics Company Limited, Wuhan Tianma Micro-Electronics Company Limited (Wuhan Donghu New Technology Development Zone Production Promotion Centre), Wuhan Tianma Microelectronics Company Limited Shanghai Branch
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Original AssigneeShanghai Tianma AM-OLED Co. Ltd (Tianma Microelectronics Company Limited), Tianma Microelectronics Company Limited
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InventorsXia, Wanwan, Han, Lijing, Luo, Liyuan
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Primary Examiner(s)Pham, Thomas K
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Assistant Examiner(s)Oestreich, Mitchell
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Application NumberUS14/722,056Publication NumberTime in Patent Office987 DaysField of Search35948705US Class CurrentCPC Class CodesG02B 27/0018 with means for preventing g...G02B 27/281 used for attenuating light ...G02B 5/3016 involving passive liquid cr...G02B 5/3025 Polarisers, i.e. arrangemen...G02B 5/3033 in the form of a thin sheet...G02B 5/3083 Birefringent or phase retar...H10K 50/856 comprising reflective meansH10K 50/868 Arrangements for polarized ...H10K 59/50 OLEDs integrated with light...
