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Display apparatus and display apparatus driving method

A technology for display devices and display components, which is applied to static indicators, instruments, etc., and can solve problems such as the reduction of display quality of display devices.

Active Publication Date: 2012-07-04
JOLED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, when the aging phenomenon occurs, the display quality of the display device is reduced

Method used

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  • Display apparatus and display apparatus driving method
  • Display apparatus and display apparatus driving method

Examples

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example 2

[0058] 3. Example 2 (display device and display device driving method)

[0059] [Overall description of display device and display device driving method]

[0060] From a digital control point of view, preferably the values ​​of the input signal and the video signal vary in steps expressed in powers of two. In the display device and the display device driving method according to the embodiments of the present disclosure, the grayscale value of the video signal may be greater than the maximum value of the grayscale value of the input signal.

[0061] For example, an input signal may undergo 8-bit gradation control, and a video signal may undergo more than 8-bit gradation control. For example, a configuration in which a video signal is subjected to 9-bit control can be considered, but the present disclosure is not limited to this example.

[0062] In a display device according to an embodiment of the present disclosure or a display device used in a display device driving method...

example 1

[0082] Example 1 relates to a display device and a display device driving method according to an embodiment of the present disclosure.

[0083] figure 1 is a conceptual diagram illustrating a display device 1 according to Example 1. The display device 1 according to Example 1 includes: a display panel 20 in which display elements 10 each having a current-driven light-emitting portion are arranged in a two-dimensional matrix in a first direction and a second direction, and displays information about a video signal VD Sig image; and the brightness correction unit 110, by correcting the input signal VD Sig The gray value and output the corrected input signal as the video signal VD Sig to correct the brightness of the display element 10 when displaying an image on the display panel 20 . In Example 1, the light emitting portion was configured of an organic electroluminescent portion.

[0084] First Direction ( figure 1 N display elements in the X direction, also known as the...

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Abstract

Provided are a display apparatus and a display apparatus driving method. The display apparatus includes: a display panel that includes display elements having a current-driven light-emitting portion, in which the display elements are arranged in a two-dimensional matrix in a first direction and a second direction, and that displays an image on the basis of a video signal; and a luminance correcting unit that corrects the luminance of the display elements when displaying an image on the display panel by correcting a gradation value of an input signal and outputting the corrected input signal as the video signal. The luminance correcting unit includes a reference operating time calculator, an accumulated reference operating time storage, a reference curve storage, a gradation correction value holder, and a video signal generator.

Description

technical field [0001] The present disclosure relates to a display device and a display device driving method. Background technique [0002] A display element having a light-emitting portion and a display device having such a display element are known. For example, as a display element capable of emitting light with high luminance by low-voltage DC driving, a display element having an organic electroluminescence portion of electroluminescence (hereinafter, also abbreviated as EL) using an organic material (hereinafter, also simply abbreviated as For organic EL display elements) has attracted attention. [0003] Similar to a liquid crystal display, for example, in a display device including an organic EL display element (hereinafter, also simply abbreviated as an organic EL display device), as drive types, a simple matrix type and an active matrix type are known. The active matrix type has a disadvantage of a complicated structure, but has an advantage of being able to enha...

Claims

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Application Information

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IPC IPC(8): G09G3/20G09G3/32
CPCG09G2320/041G09G3/3233G09G2320/064G09G2320/048
Inventor 山下淳一内野胜秀
Owner JOLED INC
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