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Dimmer element and display element using the same

A technology of light-adjusting components and display components, which is applied in optics, nonlinear optics, instruments, etc., and can solve problems such as impracticality and control of hydrogen content

Inactive Publication Date: 2008-04-23
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult to control the hydrogen content in the ambient gas for each pixel, so it is not practical

Method used

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  • Dimmer element and display element using the same
  • Dimmer element and display element using the same
  • Dimmer element and display element using the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0112] First, refer to image 3 A first embodiment of the light adjusting element of the present invention will be described.

[0113] The dimming element of this embodiment has a laminated structure including a dimming layer 1 and a conversion layer 2, and the light reflectance (optical characteristics) of the dimming layer 1 changes in response to electrical excitation. This dimming element includes: a pair of electrodes 3a, 3b sandwiching a dimming layer 1 and a conversion layer 2; and a substrate 4 supporting a laminated structure. Appropriate voltage can be externally applied to the pair of electrodes 3a, 3b, but it is also possible to simply short-circuit the electrodes 3a and 3b as appropriate.

[0114] In addition, the stacking order of the converting layer 2 and the light-adjusting layer 1 with respect to the substrate 4 is not limited to the order shown in the figure, and the converting layer 2 may be arranged on the side close to the substrate 4, and the light-adju...

Embodiment approach 2

[0134] Below, refer to Figure 5 (a) and (b) describe the second embodiment of the light adjusting element of the present invention. In this embodiment, instead of switching between a metallic reflective state and a transparent state, a transition between a metallic reflective state and an absorbing (black) state is performed.

[0135] Figure 5 (a) and Figure 5 (b) shows a light-adjusting element in which the stacking order of the converting layer 2 and the light-adjusting layer 1 is reversed. exist Figure 5 In the structure of (a), light is incident from the back side of the substrate 4, and Figure 5 In the structure of (b), light enters from the upper surface side of the board|substrate 4. As shown in FIG. Any dimming element is equipped with a conversion layer 2 that absorbs visible light. Such conversion layer 2 can be formed, for example, from black CNTs. In addition, in the case where the conversion layer 2 is colored, or in the case where the conversion layer...

Embodiment approach 3

[0144] Second, refer to Figure 6 (a) illustrates the third embodiment of the light adjusting element of the present invention.

[0145] Although the dimming element of this embodiment is equipped with the conversion layer 2 transparent to visible light, it is also equipped with a member (light-absorbing sheet) 5 having a function as a light-absorbing layer, so it can be used in a metal reflective state and a black (light-absorbing sheet) 5. ) transitions between states. The light-absorbing sheet 5 may be a sheet (black) that absorbs light in the entire range of visible light, or a sheet (other color) that absorbs part of light in the visible light range.

[0146] The light absorber 5 is arranged on the side opposite to the light incident side with respect to the light adjustment layer 1 . In this embodiment, if Figure 6 As shown in (a), the transparent conversion layer 2 is disposed on the light-adjusting layer 1, but the vertical relationship between the conversion layer...

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Abstract

A dimmer element made of a material which is capable of transition between a metal reflection state and a transmission state. The dimmer element is of laminated construction including a first layer (1) and a second layer (2), and the light reflectance of the first layer (1) changes in response to an external stimulus. The first layer (1) contains a first material whose optical characteristics change according to the concentration of a specific chemical element, while the second layer (2) contains a second material capable of containing a specific chemical element, the second material discharging or absorbing a specific chemical element according to an external stimulus.

Description

technical field [0001] The invention relates to a dimming element and a display element capable of controlling the reflectivity and transmittance of light. Background technique [0002] There is such a report: by making metal thin films such as yttrium (Y) or lanthanum (La) combined with hydrogen, it is changed into a phenomenon of hydrides that can transmit visible light (US Patent No. 5,635,729 specification, and Huibert and other 6 people, naturally (Nature), (UK), March 1996, Vol. 380, p.231-234). This phenomenon is reversible, so by adjusting the hydrogen pressure in the ambient atmosphere, the film can be changed between a metallic luster state and a transparent state. [0003] By changing the optical properties of the above thin film, it is possible to switch between a metallic glossy state and a transparent state, and realize a light-adjustable mirror that can freely adjust the reflectance / transmittance of light. If the dimming mirror is used, for example, as a win...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/19G02F1/17
Inventor 内田秀树
Owner SHARP KK