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Optical film and display unit

A technology of optical film layer and display device, which is applied in optics, optical elements, nonlinear optics, etc., can solve the problems of low light utilization rate and inapplicability of transparent display devices, and achieve high utilization rate, low cost and eliminate influence Effect

Inactive Publication Date: 2015-04-29
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above problems, the present invention provides an optical film layer and a display device, which are used to solv

Method used

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  • Optical film and display unit
  • Optical film and display unit
  • Optical film and display unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] figure 1 It is a schematic structural diagram of an optical film layer provided in Embodiment 1 of the present invention. Such as figure 1 As shown, the optical film layer includes a base substrate 101, a first birefringent layer 102 and a second birefringent layer 103, the first birefringent layer 102 is arranged above the base substrate 101, and the second The second birefringent layer 103 is disposed above the first birefringent layer 102 . The second birefringent layer 103 is used to convert the incident first linearly polarized light into elliptically polarized light, and the first birefringent layer 102 is used to convert the elliptically polarized light into outgoing circularly polarized light. The second birefringent layer converts the incident first linearly polarized light into elliptically polarized light, and the first birefringent layer converts the elliptically polarized light into outgoing circularly polarized light. Alternatively, the first birefringe...

Embodiment 2

[0031] figure 2 It is a schematic structural diagram of a display device provided by Embodiment 2 of the present invention. Such as figure 2 As shown, the display device includes a display panel 109 and the optical film layer provided in Embodiment 1. The optical film layer is arranged on the light incident side of the display panel 109, the second birefringent layer converts the incident first linearly polarized light into elliptically polarized light, and the first birefringent layer converts the elliptically polarized light into Light is converted to outgoing circularly polarized light, or the first birefringent layer converts incident first linearly polarized light to elliptically polarized light, and the second birefringent layer converts the elliptically polarized light to outgoing circularly polarized light Light. Since circularly polarized light can be fully utilized by the display device, the optical film layer provided in this embodiment has a high utilization r...

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PUM

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Abstract

The invention provides an optical film and a display unit. The optical film comprises an underlayer substrate, a first birefringence layer and a second birefringence layer. The first birefringence layer is arranged on the underlayer substrate, and the second birefringence layer is arranged on the first birefringence layer. First incident linearly polarized light is converted into elliptically polarized light by the second birefringence layer, and the elliptically polarized light is converted into emergent circularly polarized light by the first birefringence layer, or the first incident linearly polarized light is converted into the elliptically polarized light by the first birefringence layer, and the elliptically polarized light is converted into the emergent circularly polarized light by the second birefringence layer. Since the circularly polarized light can be fully utilized by the display unit, the light utilization rate of the optical film is high, cost is low, influence on normal display due to reflected light can be eliminated, and the optical film is applicable to the transparent display unit.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical film layer and a display device. Background technique [0002] In the existing display device, the polarizer can only reflect a part of the polarized light, and transmit a part of the polarized light. The transmitted polarized light can be directly used, and the reflected polarized light can only be changed if the polarized light is to be used again. The polarization direction of the reflection again. The existing technology uses a specific rough surface, for example, a reflector or a diffuser in the backlight module to diffusely reflect or scatter light to change the polarization direction of the polarized light re-reflection. These two methods are usually called depolarization, that is, polarization Light becomes unpolarized natural light. However, 50% of the transmitted natural light can be utilized at most by depolarization in the prior art, while 50% of the ref...

Claims

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Application Information

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IPC IPC(8): G02B5/30G02F1/1335
CPCG02B5/3083G02F1/133528G02F1/133541
Inventor 王尚金起满
Owner BOE TECH GRP CO LTD