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Light emitting device

A technology of light-emitting devices and light-emitting units, applied in the optical field, can solve problems such as human eye irritation, and achieve the effects of reducing the degree of irritation, improving the service life, and improving the light output efficiency.

Pending Publication Date: 2021-05-25
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide a light-emitting device to solve the problem that the light-emitting device in the prior art is more irritating to human eyes while increasing the pixel density

Method used

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Examples

Experimental program
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Embodiment 1

[0042] The 6-inch light-emitting device provided by this embodiment is as figure 1 As shown, it includes a substrate layer 30, a pixel isolation structure 40, at least one light-emitting unit 10, and a light diffusion structure 20. The pixel isolation structure 40 is disposed on one side surface of the substrate layer 30, and multiple mutually isolated pixel structures are formed in the pixel isolation structure 40. The pixel isolation structure is composed of a plurality of isolation units 410 connected, and each isolation unit 410 surrounds the sub-pixel area in one-to-one correspondence; each light emitting unit 10 is composed of a blue QLED light emitting unit 110 and a non-light emitting area, and each light emitting unit The light-emitting units 110 in Figure 10 are arranged in a one-to-one correspondence in the sub-pixel area, and the area other than the light-emitting unit 110 in the sub-pixel area and the isolation unit 410 constitute a non-light-emitting area, definin...

Embodiment 2

[0046] The 6-inch light-emitting device provided by this embodiment is as image 3 As shown, it includes a substrate layer 30, a pixel isolation structure 40, at least one light-emitting unit 10, and a light diffusion structure 20. The pixel isolation structure 40 is disposed on one side surface of the substrate layer 30, and multiple mutually isolated pixel structures are formed in the pixel isolation structure 40. The pixel isolation structure is composed of a plurality of isolation units 410 connected, and each isolation unit 410 surrounds the sub-pixel area in one-to-one correspondence; each light emitting unit 10 is composed of a blue QLED light emitting unit 110 and a non-light emitting area, and each light emitting unit The light-emitting units 110 in Figure 10 are arranged in a one-to-one correspondence in the sub-pixel area, and the area other than the light-emitting unit 110 in the sub-pixel area and the isolation unit 410 constitute a non-light-emitting area, definin...

Embodiment 3

[0050] The 6-inch light-emitting device provided by this embodiment is as Figure 4As shown, it includes a substrate layer 30, a pixel isolation structure 40, at least one light-emitting unit 10, and a light diffusion structure 20. The pixel isolation structure 40 is disposed on one side surface of the substrate layer 30, and multiple mutually isolated pixel structures are formed in the pixel isolation structure 40. The pixel isolation structure is composed of a plurality of isolation units 410 connected, and each isolation unit 410 surrounds the sub-pixel area in one-to-one correspondence; each light emitting unit 10 is composed of a blue QLED light emitting unit 110 and a non-light emitting area, and each light emitting unit The light-emitting units 110 in Figure 10 are arranged in a one-to-one correspondence in the sub-pixel area, and the area other than the light-emitting unit 110 in the sub-pixel area and the isolation unit 410 constitute a non-light-emitting area, definin...

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Abstract

A light emitting device is provided. The light-emitting device comprises at least one light-emitting unit arranged at intervals in the first direction, each light-emitting unit is composed of a light-emitting element and a non-light-emitting area, the area of the light-emitting surface of each light-emitting element is defined as A1, and the light-emitting device further comprises a light diffusion structure which comprises at least one diffusion unit. The diffusion units are arranged on the light emitting side of the light emitting unit in a one-to-one correspondence mode, each diffusion unit is provided with a first surface far away from the light emitting side, the area of the first surface is defined as A2, A2 is larger than A1, and therefore the light diffusion structure can expand an existing light emitting area of a device under the condition that the pixel density (ppi) of the device is not affected, and relatively concentrated emergent light is dispersed to a certain degree, the stimulation degree to human eyes is reduced, and the effect of relieving visual fatigue is achieved; moreover, through the arrangement of the light diffusion structure, the light emitting efficiency of the device can be improved, and the service life of the device is prolonged.

Description

technical field [0001] The present invention relates to the field of optical technology, in particular to a light emitting device. Background technique [0002] Self-luminous displays such as OLEDs have attracted wide attention due to their high contrast and fast response. However, screen burn-in incidents occur frequently, exposing the nature of the short lifespan of OLED devices. The proportion of the light-emitting area in the entire panel improves the service life of the device, but with the continuous improvement of the pixel density (ppi=pixelper inch), limited by the precision mask manufacturing process, the interval between adjacent sub-pixels must be more than 20μm, Therefore, the area of ​​the sub-pixel can only be further reduced, resulting in a continuous decrease in the proportion of the light-emitting area as the ppi increases. In order to maintain the same screen brightness, only smaller pixels can emit more light, which is not only contrary to the increase in...

Claims

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Application Information

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IPC IPC(8): H01L27/32H01L51/52
CPCH10K59/122H10K50/8426
Inventor 甄常刮顾辛艳
Owner NANJING TECH CORP LTD
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