Display apparatus and display apparatus driving method

A technology for a display device and a display panel, which is applied to static indicators, cathode ray tube indicators, instruments, etc., and can solve problems such as complicated control, increased scale of control circuits, and decreased display quality of display devices

Inactive Publication Date: 2012-07-04
JOLED INC
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  • Abstract
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Problems solved by technology

[0008] The decrease in display quality of a display device due to the burn-in phenomenon can be solved by controlling the display elements so as to compensate for the decrease in luminance due to the burn-in phenomenon when driving the display elements in the area where the burn-in occurs
In the method of measuring time-lapse change data multiple times in advance and compensating for the decrease in brightness due to the burn-in phenomenon with reference to a table storing the measured data when the brightness or temperature conditions are variously changed, there is an increase in the scale of the control circuit and control complicated issues

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

[0047] 2. Example 1 (display device and display device driving method)

[0048] [Overall Explanation of Display Device and Display Device Driving Method]

[0049] 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.

[0050] 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 present disclosure is not limited to t...

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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 gradation correction value 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): G09G5/10
CPCG09G2320/045G09G2320/046G09G3/3208G09G3/3225G09G2320/041G09G2320/0285G09G2320/048
Inventor 山下淳一内野胜秀
Owner JOLED INC
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