37‐2: Plane Source Evaporation Techniques for Super Ultra High Resolution Flexible AMOLED

Hwang, Changhun; Kim, Sung Su; Lee, Hagwon; Jo, Sung-Kee; Chin, Byung Doo; Kong, Do-Hoon; Ju, Sung Hoo

doi:10.1002/sdtp.11690

Cited by 3 publications

(5 citation statements)

References 2 publications

(3 reference statements)

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“…The higher material utilization, low temperature process, and nonparticle processes are also expected in addition to the very short shadow distance and non-PL shift measurements discussed. [2] In particular, Hwang's mixing technique can improve the material utilization by over 5 times in 6G substrate process. [7]…”

Section: Resultsmentioning

confidence: 99%

“…For an example, the pattern width needs to be 4um and the pattern distance should be 20um for producing the 2250ppi AMOLED devies. [2] Let us consider why the low resolution device is. As shown in Fig.…”

Section: Fig 3 Shadowed Pattern By Linear Sourcementioning

confidence: 99%

“…The plane source evaporation is known to be vertically flying to dramatically decrease the shadowing effect. [2] The shadow pattern has been measured using the X type plane source FMM evaporation and is shown in Fig. 8.…”

Section: Plane Source Fmm Evaporationmentioning

confidence: 99%

“…The organic molecules should fly to 10° of an incident angle to explain the shadowing suppression in the plane source evaporation. [2]…”

Section: Plane Source Fmm Evaporationmentioning

confidence: 99%

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75‐2: Novel Plane Source FMM Evaporation Techniques for Manufacturing of 2250ppi flexible AMOLEDs

Hwang

Kim

Bang

et al. 2018

Symp Digest of Tech Papers

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The linear source FMM evaporation can only provide 600ppi AMOLED devices because of the shadow effect so that new concept of FMM patterning technology is needed in order to fabricate the 2250ppi AMOLEDs. Recently, the plane source FMM evaporation techniques has been developed to show a dramatically suppressed shadow effect and to measure the 0.18um of shadow distance and Hwang's mixing for the new way of EML layer process. The green color OLED device has been fabricated by the plane source evaporation to study the emission property for the first time. In addition, the fabrication process of the plane source FMM evaporator has been discussed for the 2250ppi flexible AMOLED.

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Section: Resultsmentioning

confidence: 99%

Section: Fig 3 Shadowed Pattern By Linear Sourcementioning

confidence: 99%

Section: Plane Source Fmm Evaporationmentioning

confidence: 99%

“…The organic molecules should fly to 10° of an incident angle to explain the shadowing suppression in the plane source evaporation. [2]…”

Section: Plane Source Fmm Evaporationmentioning

confidence: 99%

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75‐2: Novel Plane Source FMM Evaporation Techniques for Manufacturing of 2250ppi flexible AMOLEDs

Hwang

Kim

Bang

et al. 2018

Symp Digest of Tech Papers

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“…By the vertical vapor deposition, the smaller angle of incidence of the molecules makes the less shadow distance behind the FMM. [2,3,15]…”

Section: Plane Source Evaporationmentioning

confidence: 99%

67‐3: Unique Belt Plane Source Evaporation Techniques for the Mass Production of 2250ppi AMOLED and 77” QD OLED TV

Hwang

Kim

Bang

et al. 2019

Symp Digest of Tech Papers

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The AMOLED has a limitation in ppi(pixel per inch) resolution due to the shadow phenomenon in doing evaporation deposition process and the QD-OLED TV device has a limitation in substrate size due to the glass bending during evaporation deposition process. Using the plane source evaporation deposition, the AMOLED resolution can be improved up to 2250ppi and the blue organic film of 12G size glass can be deposited uniformly. The mass production of very high ppi AMOLED and 77" QD-OLED TV will be realized by unique belt plane source evaporator which can supply the continuous plane source evaporation process.

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Low-temperature conformal vacuum deposition of OLED devices using close-space sublimation

Tam,

Dong,

Tang

2023

J. Semicond.

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Close-space sublimation (CSS) has been demonstrated as an alternative vacuum deposition technique for fabricating organic light-emitting diodes (OLEDs). CSS utilizes a planar donor plate pre-coated with organic thin films as an area source to rapidly transfer the donor film to a device substrate at temperatures below 200 °C. CSS is also conformal and capable of depositing on odd-shaped substrates using flexible donor media. The evaporation behaviors of organic donor films under CSS were fully characterized using model OLED materials and CSS-deposited films exhibited comparable device performances in an OLED stack to films deposited by conventional point sources. The low temperature and conformal nature of CSS, along with its high material utilization and short process time, make it a promising method for fabricating flexible OLED displays.

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37‐2: Plane Source Evaporation Techniques for Super Ultra High Resolution Flexible AMOLED

Cited by 3 publications

References 2 publications

75‐2: Novel Plane Source FMM Evaporation Techniques for Manufacturing of 2250ppi flexible AMOLEDs

75‐2: Novel Plane Source FMM Evaporation Techniques for Manufacturing of 2250ppi flexible AMOLEDs

67‐3: Unique Belt Plane Source Evaporation Techniques for the Mass Production of 2250ppi AMOLED and 77” QD OLED TV

Low-temperature conformal vacuum deposition of OLED devices using close-space sublimation

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