Image display element

An image display and component technology, applied in optical components, electrical components, electrical solid-state devices, etc., to achieve the effects of low power consumption, prevention of optical crosstalk, and high color purity

Pending Publication Date: 2022-06-03
SHARP FUKUYAMA LASER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although such a display element is small, it has the characteristics of high brightness and high durability

Method used

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Experimental program
Comparison scheme
Effect test

no. 1 approach 〕

[Configuration of Image Display Device 200 ]

figure 1 It is a schematic cross-sectional view of the pixel region 1 of the image display element 200 according to the first embodiment of the present invention. figure 2 This is a schematic plan view of the light emission surface 130 of the micro light-emitting element 100 according to the first embodiment of the present invention. like figure 2 As shown, there is a pixel region 1 in which a plurality of pixels 5 are arranged in an array on the upper surface of the image display element 200 .

[0032] In the present embodiment, the image display element 200 is a full-color display element, and each pixel 5 includes one blue light-emitting element 100B, two green light-emitting elements 100G, and one red light-emitting element 100R. In addition, the blue light emitting element 100B, the green light emitting element 100G, and the red light emitting element 100R are collectively referred to as the micro light emitting el...

no. 2 approach 〕

use Figure 5 The second embodiment will be described. In the first embodiment, both surfaces of the microlens 20 are convex. In the image display element 200a of the present embodiment, the microlens 20a has a convex shape on the side of the microlight emitting element 100, but the surface on the side in the light emission direction is flat. Other than that, there is no change from the first embodiment.

[0051] In the image display element 200a, the microlens holding portion 21a can be easily thickened, and the mechanical strength of the microlens array can be increased. As a result, the fabrication of the microlens array can be separated from the microlight emitting element 100 . For example, a glass substrate can be used as the microlens holding portion 21a, and after forming the convex-shaped microlenses 20a thereon, it can be attached to the micro light-emitting element 100 via the pixel partition walls 10. Thereby, the production efficiency of the image display el...

no. 3 approach 〕

use Image 6 A third embodiment will be described. In the first embodiment, the optical path portion 15 serving as the space between the microlens 20 and the microlight emitting element 100 is a space filled with gas, but in the image display element 200b of the present embodiment, the same as that described in the first embodiment The part corresponding to the optical path part 15 of the 10 is replaced by the transparent part 11 . In this way, the optical path portion 15 surrounded by the micro light-emitting element 100 , the pixel partition walls 10 and the microlenses 20b is filled with the transparent material.

[0055] In addition, the microlens 20b has a convex shape in the light emission direction, but the surface on the side of the microlight emitting element 100 is flat. Other than that, there is no change from the first embodiment. In addition, the side which is in contact with the transparent portion 11 of the microlens 20b may have a downward convex shape. ...

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PUM

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Abstract

The image display element includes: pixels arranged in an array shape and including micro light emitting elements; a drive circuit board including a drive circuit that supplies a current to the micro light-emitting elements and emits light; a microlens disposed for each of the pixels; and a pixel partition wall disposed between the pixels and extending from a light emission surface of the micro light-emitting element to the micro lens.

Description

technical field [0001] One aspect of the present invention relates to an image display element including a micro light-emitting element. Background technique [0002] An image display element in which a plurality of micro light-emitting elements constituting pixels are arranged on a backplane is proposed. For example, in the technique disclosed in Japanese Laid-Open Patent Publication No. 2002-141492, a driver circuit is formed on a silicon substrate, and a minute light emitting diode (LED) array emitting ultraviolet light is arranged on the driver circuit. [0003] In addition, the above-mentioned technology discloses a microdisplay device that displays a color image by providing a wavelength conversion layer (wavelength conversion layer) that converts ultraviolet rays into red, green, and blue visible light on a light-emitting diode array. As another form, a blue, green, and red monochromatic display element in which a compound semiconductor that emits blue, green, and re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L25/16G02B3/00G09F9/33G02B27/01
CPCH01L25/167G02B3/0006G09F9/33G02B27/0101H01L25/0753H01L33/58G02B3/0056H01L33/60G02B3/0037
Inventor 井口胜次大沼宏彰伊藤晋安西伸介
Owner SHARP FUKUYAMA LASER CO LTD
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