Benq Materials Corporation

Meng-Jie Lin

Chen-Kuan Kuo

Chia-Feng Lin

Cyun-Tai Hong

Chuen-Nan Shen

Meng-Chia Cheng

Fung-Hsu Wu

Meng-Chieh Chou

An optical film includes a first diffraction layer, a second diffraction layer, and a cover layer. The first diffraction layer includes a plurality of first diffraction gratings arranged in a direction on a surface thereof. The second diffraction layer is filled in the gap of the first diffraction gratings of the first diffraction layer and forms a plurality of second diffraction gratings arranged in a direction on the first diffraction layer, wherein the directions of the first diffraction gratings and the second diffraction gratings are parallel to each other. The cover layer fills and planarizes the second diffraction gratings of the second diffraction layer. The optical film can reduce the light leakage defect of a conventional liquid crystal display in a wide viewing angle and make the liquid crystal display have a uniform dark-state image and color image quality.

Optical film

An optical film includes a first diffraction layer, a second diffraction layer, and a cover layer. The first diffraction layer includes a plurality of first diffraction gratings arranged in the same direction on a surface thereof. The second diffraction layer includes a plurality of second diffraction gratings arranged in the same direction gap-filled the first diffraction gratings of the first diffraction layer, wherein the directions of the first diffraction gratings and the second diffraction gratings are parallel to each other. The cover layer is formed on the second diffraction gratings of the second diffraction layer. At least one of the first diffraction layer, the second diffraction layer and the cover layer contains dyes, and therefore, the optical film can reduce the light leakage defect of a conventional liquid crystal display in a large viewing angles and make the liquid crystal display have uniform dark-state images and colorful images.

Optical film for liquid crystal display

The invention provides an optical film for improving image quality of a liquid crystal display comprising: a light directing structure layer, a first filling layer, a plurality of first diffraction gratings and a second filling layer. The light directing structure layer comprises a plurality of light directing micro structures, wherein the ratio of height to width of each light directing micro structure is in the range of 1.5 to 6. The first filling layer is disposed on the light directing structure layer, and the refractive index of the first filling layer and the light directing structure layer are different. The first diffraction gratings along with a first direction are formed on the first filling layer. The second filling layer is disposed on the first diffraction gratings and the refractive index of the second filling layer and the first diffraction gratings are different.

A polarizer for the display side of a liquid crystal display is provided. The polarizer comprises a polarizing layer, a light collimation layer and a quantum dot diffraction layer. The polarizing layer has a light incident surface and a light exiting surface. The light collimation layer is disposed on the light exiting surface of the polarizing layer. The quantum dot diffraction layer is disposed on the light collimating layer on the opposite side of the polarizing layer, and comprises a diffraction microstructure layer disposed on the light collimation layer, and a quantum dot planarization layer which fills and planarizes the diffraction microstructure layer and can be divided into a plurality of pixel regions.

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Taoyuan, Taiwan

Meng-Jie Lin