MICRO LED DISPLAY DEVICE

• Main Authors: MORISHIMA RYOTA, HATTORI DAISUKE, YOSHIKAWA TAKAHIRO
• Format: Patent
• Language: English; Japanese
• Published: 14.10.2022
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; SEMICONDUCTOR DEVICES

To provide a micro LED display device with excellent luminous efficiency and suppressed color mixture.SOLUTION: A micro LED display device according to the present invention includes a micro LED array substrate including a plurality of micro LEDs, a sealing portion that seals the plurality of micro LEDs, a low refractive index layer, and a plurality of wavelength conversion layers formed by partitioning in this order from the back side, and each of the wavelength conversion layers is formed such that a pair of layers corresponds to one micro LED in a thickness direction, and the refractive index of the low refractive index layer is lower than the refractive index of the sealing portion and the refractive index of the wavelength conversion layer, and a difference between the refractive index of the low refractive index layer and the refractive index of the sealing portion is 0.10 or more, and a difference between the refractive index of the low refractive index layer and the refractive index of the wavelength conversion layer is greater than or equal to 0.10.SELECTED DRAWING: Figure 1 【課題】発光効率に優れ、かつ、混色が抑制されたマイクロＬＥＤディスプレイ装置を提供すること。【解決手段】本発明のマイクロＬＥＤディスプレイ装置は、複数のマイクロＬＥＤを含むマイクロＬＥＤアレイ基板と、複数の該マイクロＬＥＤを封止する封止部と、低屈折率層と、区画して形成された複数の波長変換層とを、背面側からこの順に備え、個々の該波長変換層は、１つの該マイクロＬＥＤと厚み方向で対応して組となるように形成され、該低屈折率層の屈折率が、該封止部の屈折率および波長変換層の屈折率よりも低く、該低屈折率層の屈折率と該封止部の屈折率との差が、０．１０以上であり、該低屈折率層の屈折率と波長変換層の屈折率との差は０．１０以上である。【選択図】図１