Wide-viewing-angle composite polaroid

A polarizer and wide viewing angle technology, applied in the field of polarizers, can solve problems such as uneven transmittance of polarizers, and achieve the effect of reducing brightness changes and uniform transmittance

Active Publication Date: 2021-10-15
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of uneven transmittance of existing polarizers under different viewing angles, the present invention proposes a composite polarizer with a wide viewing angle

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0036] figure 1 It is a schematic diagram of the reference system for observing the transmittance of the polarizer at different viewing angles, refer to figure 1 , the angle between the line of sight and the Z axis is the polar angle θ, and the angle between the projection of the line of sight on the XY plane and the X axis is the azimuth angle . In the XY plane, the X-axis direction is defined as the 0° direction.

[0037] figure 2 It is a schematic cross-sectional structure diagram of a wide viewing angle composite polarizer proposed by the present invention, which includes a first polarizing layer 10 , an optical active layer 30 and a second polarizing layer 20 in its structure.

[0038] image 3 It is a schematic cross-sectional structure diagram of a wide viewing angle composite polarizer provided in Example 1 of the present invention, Figure 4 for image 3 Schematic diagram of the cross-sectional structure of the liquid crystal layer, Figure 5 is the direction...

Embodiment 2

[0050] Figure 11 It is a schematic cross-sectional structure diagram of a wide viewing angle composite polarizer provided in Example 2 of the present invention, Figure 12 for Figure 11 The structural formulas of the three monomers that make up the optically active layer of the liquid crystal polymer, refer to Figure 11 with Figure 12 The composite wide viewing angle polarizer includes a first polarizing layer 10, a liquid crystal optically active layer 40 and a second polarizing layer 20, wherein the first polarizing layer 10 and the second polarizing layer 20 are iodine-based polarizers, and the liquid crystal optically active layer 40 is made of HCM- 021, a liquid crystal polymer composed of three monomers, HCM-020 and HCM-009 (monomers were purchased from Jiangsu Hecheng Display Technology Co., Ltd.). The liquid crystal optical active layer 40 includes a lower substrate 401 and a liquid crystal polymer layer 402, wherein the thickness of the lower substrate 401 is 1...

Embodiment 3

[0054] Figure 14 A schematic cross-sectional structure diagram of a wide viewing angle composite polarizer provided in Example 3 of the present invention, the composite wide viewing angle polarizer includes a first polarizing layer 10, a combined wave plate optical rotation layer 50 and a second polarizing layer 20, wherein the first polarizing layer 10. The second polarizing layer 20 is an iodine-based polarizer, the combined wave plate optically active layer 50 is a multi-layer combined wave plate, and the wave plate is an R138 polymer wave plate (purchased from Sanlipu Optoelectronics Technology Co., Ltd.). The combined wave plate optical active layer includes a first wave plate 501, a second wave plate 502, a third wave plate 503, a fourth wave plate 504, a fifth wave plate 505, a sixth wave plate 506, and a seventh wave plate of the same material and thickness. wave plate 507 , eighth wave plate 508 and ninth wave plate 509 . The light transmission axis direction of the...

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Abstract

The invention relates to a wide-viewing-angle composite polaroid. The composition of the composite polaroid is that a first polarizing layer, an optical rotation layer and a second polarizing layer are sequentially arranged on an optical path; the optical rotation angle of the optical rotation layer is the same as or complementary to the included angle between the light transmission axes of the first polarizing layer and the second polarizing layer; and the range of an included angle between the light-transmitting axis of a first polaroid and the light-transmitting axis of a second polaroid is 45-135 degrees. According to the composite polaroid, the first polarizing layer, the optical rotation layer and the second polarizing layer are combined in sequence to form a composite polaroid with the polarization function. Compared with an existing polaroid, the transmittance of the organic light-emitting display device is uniform and consistent at different azimuth angles, and the problem of brightness change caused by the use of the polaroid in the organic light-emitting display device can be solved.

Description

technical field [0001] The invention relates to the technical field of polarizers, in particular to a composite polarizer with a wide viewing angle. The invention can be applied in display devices to reduce brightness variation in different viewing angles. Background technique [0002] Polarizer is a basic optical device that can be used to convert natural light into polarized light, and can also be used to selectively transmit polarized light of different polarization states. Polarizers are widely used in many display devices including liquid crystal displays, organic light-emitting displays, and the like. In a liquid crystal display, the polarizer and the liquid crystal layer together constitute an optical switch that realizes the display function. In active light-emitting display devices such as organic light-emitting displays, polarizers are used to reduce the reflection of ambient light. In 3D displays, polarizers are used to generate polarized light. The performanc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30
CPCG02B5/3041G02B5/3016G02B5/3083
Inventor 孙玉宝张弛牛瑞马红梅
Owner HEBEI UNIV OF TECH
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