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AMOLED display device based ELVDD power supply method and device and display device

A power supply method and display device technology, applied in the direction of electric solid devices, static indicators, semiconductor devices, etc., can solve the problems of low luminous efficiency of EL devices, accelerated aging of EL devices, and high energy consumption of EL devices

Active Publication Date: 2016-08-10
BOE TECH GRP CO LTD
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  • Abstract
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Problems solved by technology

Due to the high ELVDD supplied by the driver integrated circuit, the luminous efficiency of the EL device is still relatively low, so the current passing through the EL device has always been the largest. ELVDD generates current in the EL device, resulting in a large energy consumption of the EL device; The thermal effect of the EL device increases the heat generation, which leads to the accelerated aging of the EL device and reduces the life of the EL device

Method used

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  • AMOLED display device based ELVDD power supply method and device and display device

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Embodiment Construction

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0044] overview

[0045] The present invention compares the data signals of all rows of pixels in a frame of an AMOLED display device with at least two levels of gray scale values ​​to find out the gray scale values ​​corresponding to all pixel rows in a frame of an AMOLED display device, wherein each The grayscale value corresponding to the data signal of one row of pixels is greater than the target level grayscale value; and find the maximum gr...

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Abstract

The invention provides an AMOLED display device based ELVDD power supply method and device and display device, and relates to field of display technology. An ELVDD can provide each frame of picture for the AMOLED display device flexibly. The method comprises that data signals of each row of pixels in a frame of picture are obtained; the data signals of each row of pixels are compared with gray scale values of at least two levels; a gray scale value corresponding to the data signals of the row of pixels is determined, and a target level of the closest gray scale value is used as the gray scale level corresponding to the data signals of the row of pixels, and the gray scale value corresponding to the data signals of the row of pixels is greater than the gray scale value of the target level; and the highest gray scale level corresponding to the data signals of the row of pixels serves as the gray scale level of the frame of picture, and the ELVDD corresponding to the highest gray scale level is used to drive the frame of picture. The method and device are used for manufacture of the AMOLED display device.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an ELVDD power supply method based on an AMOLED display device, a power supply device and a display device. Background technique [0002] Existing flat panel display devices mainly include a liquid crystal display device (English full name: Liquid Crystal Display, abbreviated: LCD) and an organic light emitting diode display device (English full name: Organic Light Emitting Display, abbreviated: OLED). OLED display devices can be classified into passive matrix OLED (English full name: Passive Matrix OLED, abbreviated: PMOLED) and active matrix OLED (English full name: Active Matrix OLED, abbreviated: AMOLED) according to the driving method. [0003] At present, the luminous efficiency of light-emitting (English full name: Electroluminescent, abbreviated: EL) devices is relatively low. In order to increase the luminous brightness of the display panel, it is necessary to drive a t...

Claims

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Application Information

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IPC IPC(8): G09G3/3225
CPCG09G3/3225H10K59/12G06F1/3296G02F2203/30G06F1/32G09G2320/0252G09G2360/16G09G2310/0264
Inventor 陈燚
Owner BOE TECH GRP CO LTD
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