Lg Display Co., Ltd.

Woo Jin Nam

Byung Chul Ahn

Shinji Takasugi

Chang Wook Han

Hong Seok Choi

Yoon Heung Tak

Jong Sik Shim

Hwa Kyung Kim

Min Kyu Chang

Hong Jae Shin

Do Hyung Kim

Heung Lyul Cho

Jeong Hyun Kim

Jae Yoon Lee

Kyung Man Kim

Joon Suk Lee

Jin Hyoung Kim

Seung Tae Kim

Ho Min Lim

Su Jin Baek

Seon Mi Lee

Jung Yoon Yi

Moon Ky Lee

Provided are a method of manufacturing an organic light emitting display device and an organic light emitting display device manufactured by the method. The method includes calculating a peak-luminance current density for each of a red sub-pixel, a blue sub-pixel, a green sub-pixel, and a white sub-pixel, calculating an average use current density for each of the red sub-pixel, blue sub-pixel, green sub-pixel, and white sub-pixel; determining a size of each sub-pixel with the peak-luminance current density and the average use current density, and forming the sub-pixels with the determined sizes of the respective sub-pixels. The present invention sets the size of each sub-pixel in consideration of a peak-luminance current density and an average use current density, thus easily achieving the peak luminance and enhancing the color-coordinate life.

Organic light emitting display device and method of manufacturing the same

An organic light emitting display device including an emission unit and a pixel circuit unit. The emission unit includes an organic light emitting diode. The pixel circuit unit includes a driving transistor, at least one or more switching transistors, a capacitor, a light blocking unit, and an opening in which the light blocking layer is not formed. The light blocking unit includes a light blocking layer which blocks light input to the pixel circuit unit. The pixel circuit unit is configured to drive the emission unit and selectively block the light input to the pixel circuit unit.

Organic light emitting display device for preventing deterioration of driving transistors

Disclosed is a thin film transistor substrate which facilitates to improve output and transfer characteristics of thin film transistor, wherein the thin film transistor substrate comprises a thin film transistor comprising a lower gate electrode on a substrate, an active layer on the lower gate electrode, source and drain electrodes on the active layer, and an upper gate electrode on the source electrode, drain electrode and active layer, the upper gate electrode for covering a channel region defined by the source and drain electrodes; and a contact portion for electrically connecting the lower gate electrode with the upper gate electrode.

Thin film transistor substrate and method for manufacturing the same and organic light emitting device using the same

An OLED display includes a data line, a gate line crossing the data line receiving a scan pulse, a high potential (HP) driving voltage (DV) source, a low potential (LP) DV source, a light emitting element (LEE) emitting light from current flowing between the HP DV source and the LP DV source, a drive element (DE) connected between the HP DV source and the LEE controlling a current flowing in the LEE from voltage between a gate electrode (GE) and a source electrode (SE) of the DE, and a driving current stabilization circuit applying a voltage to the GE of the DE turning on the DE and sinking a reference current through the DE, setting a source voltage of the DE at a sensing voltage and modifying voltage between the GE and SE of the DE to scale a current to be applied to the LEE from the reference current.

Organic light emitting diode display and method of driving the same

An organic light emitting diode display includes a data line, a gate line that crosses the data line to receive a scan pulse, a high potential driving voltage source to generate a high potential driving voltage, a low potential driving voltage source to generate a low potential driving voltage, a light emitting element to emit light due to a current flowing between the high potential driving voltage source and the low potential driving voltage source, a drive element connected between the high potential driving voltage source and the light emitting element to control a current flowing in the light emitting element depending on a voltage between a gate electrode and a source electrode of the drive element, and a driving current stabilization circuit to apply a first voltage to the gate electrode of the drive element to turn on the drive element and to sink a reference current through the drive element to set a source voltage of the drive element at a sensing voltage and to modify the voltage between the gate and source electrodes of the drive element to scale a current to be applied to the light emitting element from the reference current.

Disclosed herein are a light emitting display which can compensate for a threshold voltage of a driving switching element, and a method for driving the same. A light emitting display includes a pixel circuit that outputs a driving current corresponding to a data voltage from a data line using a scan signal, a first driving voltage and a second driving voltage; and a light emitting element that emits light by the driving current from the pixel circuit.

Light emitting display and method for driving the same

An organic light emitting diode display device according to the present invention includes a first electrode on a first substrate including a first region and a second region, the second region substantially surrounding the first region; a pixel separating pattern on the first electrode in the second region; an organic light emitting pattern at least in the first region; a second electrode on the organic light emitting pattern; a contact electrode on the pixel separating pattern, the contact electrode being electrically connected to the second electrode; and a thin film transistor on the second substrate facing the first substrate, the thin film transistor being electrically connected to the contact electrode.

Organic light emitting diode display device and method of manufacturing the same

Growing community of inventors

Seongnam-si, South Korea

Woo Jin Nam