Display apparatus and display apparatus driving method

A display device and display panel technology, which is applied to lighting devices, static indicators, instruments, etc., can solve the problems of increased control circuit scale and complicated control, and achieves the effect of reducing burns.

Active Publication Date: 2012-07-11
JOLED INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the method of reducing burn-in phenomenon by measuring time-lapse change data multiple times in advance and referring to a table storing the measured data when the operation history is variously changed, there is a problem that the scale of the control circuit increases and the control becomes complicated

Method used

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

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example 1

[0044] 2. Example 1 (display device and display device driving method)

[0045] [Overall Explanation of Display Device and Display Device Driving Method]

[0046] In the display device and the display device driving method according to the embodiments of the present disclosure, it is preferable that the values ​​of the input signal and the video signal are changed in steps represented by powers of 2 from the viewpoint of digital control. 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 to reduce the burn-in phenomenon.

[0047] For example, an input signal may be subjected to 8-bit grayscale control, while a video signal may be subjected to greater than 8-bit grayscale control. For example, a configuration in which a video signal is subjected to 9-bit control can be considered, but the prese...

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Abstract

A 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 black-level shift amount holder, and a video signal generator.

Description

technical field [0001] The present disclosure relates to a display device and a method for driving the display device. Background technique [0002] Display elements having light emitting portions and display devices having such display elements are well known. For example, a display element (hereinafter, also abbreviated as an organic EL display element) having an organic electroluminescent part (hereinafter also abbreviated as an organic EL display element) utilizing electroluminescence of an organic material (hereinafter, also abbreviated as EL) can emit light with high brightness by low-voltage DC driving. The display elements that have attracted attention. [0003] Similar to liquid crystal displays, for example, in a display device including an organic electroluminescent display element (hereinafter, also abbreviated as an organic EL display device), a simple matrix type and an active matrix type are known as drive types. This active matrix type has a disadvantage of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/20G09G3/32H05B44/00
CPCG09G2320/045G09G2300/0842H01L51/50G09G2360/16H05B33/08G09G3/20G09G3/3233G09G2320/0238G09G3/30G09G2320/048G09G3/32
Inventor 山下淳一内野胜秀
Owner JOLED INC
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