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Optical devices

A technology of optical components and color filters, applied in the direction of optical components, optics, filters, etc., can solve problems such as quantum efficiency decline

Active Publication Date: 2020-07-14
VISERA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in an optical element with a waveguide color filter (WGCF) structure, the quantum efficiency (QE) of the pixel decreases due to the metal grid absorbing oblique light, especially for pixels located at the edge of the substrate. in this way

Method used

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Embodiment Construction

[0042] see figure 1 , according to an embodiment of the present invention, an optical element 10 is provided. figure 1 is a schematic cross-sectional view of the optical element 10 .

[0043] The optical element 10 includes a substrate 12, a plurality of color filters (14a, 14b, 14c), and a plurality of spacers (16a, 16b, 16c). The substrate 12 has a central region 12a, a middle region 12b, and an edge region 12c. The middle zone 12b is located between the central zone 12a and the edge zone 12c. Color filters ( 14 a , 14 b , 14 c ) are formed on the substrate 12 . Spacers (16a, 16b, 16c) (ie, low-refractive-index grids (LNG)) are formed between the color filters (14a, 14b, 14c). Each spacer (16a, 16b, 16c) has a first sidewall S1 and a second sidewall S2, and the second sidewall S2 is opposite to the first sidewall S1. A first angle θ1 is formed between the first sidewall S1 of each spacer ( 16 a , 16 b , 16 c ) and the normal 18 of the upper surface S of the substrate 12...

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Abstract

An optical device is provided. The optical device includes a substrate, a plurality of color filters formed on the substrate, and a plurality of spacers formed between the color filters. Each spacer has a first sidewall and a second sidewall opposite to the first sidewall. There is a first angle between the first sidewall of each spacer and a normal line of the top surface of the substrate. Thereis a second angle between the second sidewall of each spacer and the normal line of the top surface of the substrate. At least one of the first angle and the second angle is increased gradually towards the edge of the substrate.

Description

technical field [0001] The invention relates to an optical element, in particular to an optical element with an inclined low-refractive-index grating. Background technique [0002] In an optical element with a composite metal grid (CMG) structure, it is necessary to arrange microlenses on the color filter. In an optical element with a waveguide color filter (waveguide color filter, WGCF) structure, a low-refractive index material layer surrounding the color filter is used instead of a micro lens to form a waveguide structure. [0003] However, in an optical element with a waveguide color filter (WGCF) structure, the quantum efficiency (QE) of the pixel decreases due to the metal grid absorbing oblique light, especially for pixels located at the edge of the substrate. in this way. [0004] Therefore, it is necessary to develop an optical waveguide color filter (WGCF) structure that can improve quantum efficiency (QE) and maintain low crosstalk between color filters without ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/20
CPCG02B5/20G02B5/201G02B5/005G02B1/11
Inventor 林国峰谢锦全
Owner VISERA TECH CO LTD