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Electroluminescent display device

An electroluminescence display and display line technology, applied in electroluminescence light sources, electric light sources, lighting devices, etc., can solve problems such as changes in driving characteristics between pixels, increasing differences in pixel driving characteristics, and pixel irregularities.

Active Publication Date: 2018-09-07
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there may be variations in driving characteristics between pixels due to various reasons including process variation
Also, depending on the operating time of the display device, the degradation rate may vary between pixels, increasing the difference in driving characteristics between pixels
Therefore, the amount of drive current flowing through the OLED varies with the change in drive characteristics between pixels, which causes irregularities between pixels

Method used

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Examples

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Embodiment Construction

[0042] Various aspects and features of the present disclosure and methods of accomplishing them can be understood more easily by referring to the following detailed description of the embodiments and accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of the disclosure to those skilled in the art, and the disclosure will be defined by the appended claims.

[0043] The shapes, dimensions, proportions, angles, numbers, etc. shown in the drawings for describing the embodiments of the present disclosure are merely examples, and are not limited to those shown in the drawings. Like reference numerals refer to like elements throughout the specification. In describing the present disclosure, detailed descriptions of related well-known technologies ...

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Abstract

Disclosed is an electroluminescent display device having a display panel including pixels, a pixel circuit of each of the pixels comprising a capacitor connected between a first and second node, a driving transistor connected to the second node, a third node, and a first supply voltage, a first transistor supplying the first supply voltage or a reference voltage to the first node, a second transistor supplying the reference voltage to the second node, a third transistor supplying a data voltage to the first node, a fourth transistor forming a current path between the second and third nodes, afifth transistor supplying the reference voltage or a reset voltage to the fourth node, a sixth transistor supplying the reference voltage to the first node, a seventh transistor forming a current path between the third and fourth nodes, and a diode connected to the fourth node and a second supply voltage.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of priority from Korean Patent Application No. 10-2017-0025947 filed on February 28, 2017, the entire contents of which are incorporated herein by reference. technical field [0003] The present disclosure relates to an electroluminescent display device. Background technique [0004] Electroluminescent displays are roughly classified into inorganic light emitting displays and organic light emitting displays depending on the material of the light emitting layer of the display. Among them, the active matrix organic light-emitting display includes a self-luminous organic light-emitting diode (hereinafter referred to as "OLED"), and has the advantages of fast response time, high luminous efficiency, high brightness, and wide viewing angle. [0005] An OLED, which is a self-luminous device, includes an anode and a cathode and an organic compound layer formed between the anode and the cat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G3/3233G09G2300/0819G09G2300/0861G09G2310/0251H05B33/10G09G2320/043G09G2320/0233G09G2300/043G09G2300/0842G09G2230/00G09G3/30G09G3/14H10K50/841H10K59/12H10K59/90
Inventor 高皓煐柳俊锡尹盛煜张成旭
Owner LG DISPLAY CO LTD
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