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Electroluminescent display device

An electroluminescent display and current technology, applied to static indicators, instruments, etc., can solve problems such as uneven brightness, differences in pixel driving characteristics, and differences in driving characteristics

Pending Publication Date: 2022-07-01
LG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] As the driving time elapses, differences in driving characteristics between pixels may occur
Such a difference in driving characteristics causes brightness unevenness, deteriorating picture quality
Despite various attempts to compensate for differences in driving characteristics between pixels in electroluminescent display devices, there are limitations in ensuring brightness uniformity due to low sensing accuracy

Method used

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  • Electroluminescent display device
  • Electroluminescent display device
  • Electroluminescent display device

Examples

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Embodiment Construction

[0025] Advantages and features of the present disclosure and ways to achieve the advantages and features of the present disclosure will become apparent with reference to the embodiments described in detail below in conjunction with the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, and may be embodied in many different forms. Rather, these exemplary embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope to those skilled in the art. Accordingly, the scope of the present disclosure should be defined by the claims.

[0026] The shapes, dimensions, proportions, angles, numbers, etc. shown in the drawings for the purpose of describing various embodiments of the present disclosure are given by way of example only, and thus, the present disclosure is not limited to the illustrations in the drawings. Throughout the specification, identical or very similar elements are d...

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Abstract

An electroluminescent display device according to an embodiment of the present disclosure includes: a pixel including a driving element having a gate electrode connected to a data line and a source electrode connected to a readout line; a sensing circuit configured to sense a voltage of the readout line that varies according to a pixel current flowing through the driving element during a sensing operation; and a boost circuit connected between the data line and the readout line and configured to change a voltage of the data line according to a voltage change in the readout line during a sensing operation.

Description

[0001] This application claims the benefit of Korean Patent Application No. 10-2020-0184551, filed on December 28, 2020, which is incorporated herein by reference as if fully set forth herein. technical field [0002] The present disclosure relates to electroluminescent display devices. Background technique [0003] Electroluminescent display devices are classified into inorganic light-emitting display devices and organic light-emitting display devices according to the material of the light-emitting layer. Each pixel of the electroluminescence display device includes a self-emissive light-emitting element, and the brightness is adjusted by controlling the light-emission amount of the light-emitting element according to a data voltage depending on a gradation of video data. [0004] As the driving time elapses, differences in driving characteristics between pixels may occur. Such differences in driving characteristics result in uneven brightness, thereby deteriorating pictur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30
CPCG09G3/30G09G2320/0233G09G2320/0295G09G3/3233G09G2320/045G09G3/3291G09G3/3275G09G2300/0426G09G2300/0842G09G2310/08
Inventor 金慜金赫俊崔智水李泰瑛
Owner LG DISPLAY CO LTD
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