Display apparatus having a transmissive region with auxiliary layer

Patent metadata

Field	Value
Publication number	US-12256599-B2
Application number	US-202217842827-A
Country	US
Kind code	B2
Filing date	Jun 17, 2022
Priority date	Apr 24, 2019
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

A display apparatus includes: a first substrate and a display unit. The display unit includes a display region and a transmissive region. The display unit further includes: an auxiliary layer disposed in correspondence with the transmissive region; and a second electrode disposed in correspondence with the display region and at least a portion of the transmissive region. The auxiliary layer includes a first material, the second electrode includes a second material, and the first material and the second material each satisfy Equation 1 below: <Equation 1> ST2−ST1>0 mJ/m 2 , wherein, in Equation 1, ST1 is a surface energy of the first material at 25° C., and ST2 is a surface energy of the second material at 25° C.

First claim

What is claimed is:

1. A display apparatus comprising: a first substrate and a display unit,
wherein the display unit comprises a display region and a transmissive region, with an insulating layer disposed on the display region and the transmissive region, a first opening in the insulating layer overlapping the display region and a second opening in the insulating layer distinct from the first opening overlapping the transmissive region,
the display unit further comprises: an auxiliary layer disposed in the second opening overlapping the transmissive region; and a second electrode disposed in the first opening overlapping the display region and above the auxiliary layer in at least a portion of the transmissive region,
the auxiliary layer comprises a first material,
the second electrode comprises a second material,
the first material comprises about 20 at % or more of fluorine, and
the first material and the second material each satisfy Equation 1 below:
ST 2 −ST 1 >0 mJ/m 2   <Equation 1>

wherein, in Equation 1,
ST1 is a surface energy of the first material at 25° C., and
ST2 is a surface energy of the second material at 25° C.

2. The display apparatus of claim 1 , wherein the second electrode is disposed in correspondence with the display region and all of the transmissive region,
a first portion of the second electrode is disposed in correspondence with the display region,
a second portion of the second electrode is disposed in correspondence with the transmissive region, and
a thickness of the first portion (T 1 ) and a thickness of the second portion (T 2 ) each satisfy Equation 2 below:
T 1 >T 2 .  <Equation 2>

3. The display apparatus of claim 2 , wherein T 2 is greater than about 0 nm and less than about 1 nm or less.

4. The display apparatus of claim 1 , wherein the second electrode is disposed in correspondence with the display region and a portion of the transmissive region,
wherein a portion of the second electrode disposed in correspondence with the portion of the transmissive region comprises a plurality of particles comprising the second material.

5. The display apparatus of claim 4 , wherein a thickness of the portion of the second electrode disposed in correspondence with the display region is greater than an average diameter of the plurality of particles.

6. The display apparatus of claim 1 , wherein ST1 is greater than about 0 mJ/m 2 and about 30 mJ/m 2 or less.

7. The display apparatus of claim 1 , wherein the first material comprises a fluorine-containing silane compound, a fluorine-based polymer compound, or any combination thereof.

8. The display apparatus of claim 1 , wherein the second material comprises magnesium (Mg), silver (Ag,), aluminum (AI), lithium (Li), calcium (Ca), indium (In), or any combination thereof.

9. The display apparatus of claim 1 , wherein the display apparatus further comprises a first electrode and an intermediate layer, and
the intermediate layer is disposed between the first electrode and the second electrode.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Jaesik
• Lee Joongu
• Kim Jaeik
• Lee Yeonhwa
• Moon Chanho
• JEONG Sehoon
• Choung Jiyoung

Classifications

• H10K59/80521

  characterised by their shape · CPC title

• H10K2102/351

  Thickness · CPC title

• H10K2102/361

  Temperature · CPC title

• H10K59/80522

  combined with auxiliary electrodes · CPC title

• H10K59/353

  characterised by the geometrical arrangement of the RGB subpixels · CPC title