Unlock instant, AI-driven research and patent intelligence for your innovation.

Organic light emitting display device

A technology of light-emitting display and organic light-emitting layer, applied in the direction of organic semiconductor devices, electrical components, diodes, etc., can solve the problem that it is difficult to ensure the capacitance of storage capacitors

Pending Publication Date: 2021-04-13
LG DISPLAY CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] As the resolution of organic light-emitting display devices increases, it is difficult to secure the capacitance of the storage capacitor

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic light emitting display device
  • Organic light emitting display device
  • Organic light emitting display device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0022] figure 1 is a plan view schematically illustrating the OLED according to the first embodiment of the present invention. figure 2 is a circuit diagram of an example of a pixel region according to the first embodiment of the present invention.

[0023] refer to figure 1 and figure 2 , in the OLED 10 of the present invention, a plurality of pixel regions P may be arranged in a matrix in the display region to display images.

[0024] The plurality of pixel regions P may include pixel regions for constituting a unit pixel and displaying a first color, a second color, and a third color as different colors, for example, R pixels displaying red, green, and blue, respectively. area P1, G pixel area P2, and B pixel area P3. For illustration purposes, the R pixel area P1, the G pixel area P2, and the B pixel area P3 may be referred to as a first pixel area P1, a second pixel area P2, and a third pixel area P3, respectively.

[0025] The first pixel regions P1, the second pi...

no. 2 approach

[0120] Figure 4 is a cross-sectional view schematically illustrating an OLED according to a second embodiment of the present invention.

[0121] exist Figure 4 In , for the purpose of explanation, the components of the OLED related to the present embodiment are shown, and the array stack structure under the reflective electrode 180 is omitted.

[0122] Explanation of portions similar to those of the above first embodiment may be omitted.

[0123] refer to Figure 4 , the OLED 10 of this embodiment may include a micro cavity (micro cavity) structure. The microcavity structure realizes the microcavity effect of improving color purity and light efficiency through constructive interference of light.

[0124] In order to constitute a microcavity structure, the second electrode 220 may include a semi-transparent (or semi-reflective) electrode layer having a semi-transparent (or semi-reflective) property.

[0125] Accordingly, in each pixel region, light reflected and construc...

no. 3 approach

[0136] Figure 5 is a cross-sectional view schematically illustrating an OLED according to a third embodiment of the present invention. Figure 6 is to zoom in Figure 5 Cross-sectional view of the storage capacitor. Figure 7 is a plan view schematically illustrating a reflective electrode and a first electrode for forming a storage capacitor according to a third embodiment of the present invention.

[0137] exist Figure 5 In , for the purpose of explanation, the components of the OLED related to the present embodiment are shown, and the array stack structure under the reflective electrode 180 is omitted.

[0138] Explanation of portions similar to those of the above first and second embodiments may be omitted.

[0139] refer to Figure 5 to Figure 7 , in the OLED 10 of the present embodiment, the storage capacitor Cst may have an uneven or uneven structure.

[0140]The OLED 10 of the present embodiment may have the same or similar components as those of the OLED of th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
widthaaaaaaaaaa
Login to View More

Abstract

An organic light emitting display device includes a driving transistor defining each of a plurality of pixel regions which are defined on a substrate; a reflection electrode on the driving transistor and electrically connected to a gate electrode of the driving transistor; a dielectric layer on the reflection electrode; a first electrode on the dielectric layer, electrically connected to a source electrode of the driving transistor, and facing the reflection electrode; an organic light emitting layer on the first electrode; and a second electrode on the organic light emitting layer.

Description

[0001] This application claims priority to Korean Patent Application No. 10-2019-0125158 filed on October 10, 2019, which is hereby incorporated by reference in its entirety for all purposes as if fully set forth herein. technical field [0002] The invention relates to an organic light emitting display device (OLED). Background technique [0003] Recently, flat panel display devices having excellent advantages of thin profile, light weight, low power consumption, etc. have been widely developed and used in various fields. [0004] Among flat panel display devices, an organic light emitting display device (OLED) may be referred to as an organic electroluminescence display device in which charge is injected into a cathode formed as an electron injection electrode and an anode as a hole injection electrode. In the light-emitting layer between them, electron-hole pairs are formed, and light is emitted when the electron-hole pairs disappear. [0005] As the resolution of organi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L27/32H01L51/52
CPCH10K59/1216H10K59/80521H10K59/8792H10K59/80515H10K59/879H10K59/80518H10K59/876H10K59/123H10K2102/3026H10K59/131H10K50/813H10K50/818H10K50/852H10K50/865H10K59/38H10K59/122
Inventor 尹斗铉金炯洙严惠先任从赫金劲旼
Owner LG DISPLAY CO LTD