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Display device and display driving method

A technology for display devices and driving transistors, applied in lighting devices, static indicators, instruments, etc., can solve problems such as small threshold changes, and achieve the effect of no difference in brightness

Inactive Publication Date: 2010-10-13
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the threshold change needs to be small enough, so amorphous silicon TFTs have disadvantages in this regard

Method used

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  • Display device and display driving method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Embodiments of the present invention will be described below in the following order.

[0043] [1. Configuration of Display Device and Pixel Circuit]

[0044] [2. Pixel circuit operation]

[0045] [3. Write scanner configuration and pulse setting]

[0046] [4. Pulse width setting as the first embodiment]

[0047] [5. Pulse voltage level setting as the second embodiment]

[0048] [6.Modified example]

[0049] [1. Configuration of Display Device and Pixel Circuit]

[0050] figure 1 The configuration of the organic EL display device according to the embodiment of the present invention is shown.

[0051] This organic EL display device employs an organic EL element as its light-emitting element, and includes a pixel circuit 10 that performs light-emitting driving based on an active matrix system.

[0052] As shown in the figure, the organic EL display device has a pixel array 20 in which a large number of pixel circuits 10 are arranged in a matrix along the column aspec...

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PUM

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Abstract

The invention discloses a display device and a display driving method. Disclosed herein is a display device including: a pixel array configured to include pixel circuits that are arranged in a matrix and each have at least a light emitting element, a switching transistor for inputting a signal value supplied to a signal line, and a drive transistor for current application to the light emitting element dependent on the input signal value; a signal value output unit configured to output signal values given to the pixel circuits in the pixel array to the signal lines disposed on the pixel array; and a write controller configured to give, to the pixel circuits on a line-by-line basis, scan pulses for carrying out conduction control of the switching transistor and inputting the signal value on the signal line to the pixel circuit, and allow the scan pulses given to lines to each have a pulse waveform set depending on mobility of the drive transistors in a corresponding one of the lines of the pixel array.

Description

technical field [0001] The present invention relates to a display device and a display driving method thereof. The display device has a pixel array, and in the pixel array, pixel circuits each having a light-emitting element are arranged in a matrix. Background technique [0002] For example, the prior art of the present invention is disclosed in Japanese Patent Laid-Open No. 2008-158377 (Patent Document 1) and Japanese Patent Laid-Open No. 2008-40024 (Patent Document 2). [0003] In an active matrix display device in which an organic electroluminescence (EL) light-emitting element is used for pixels, the light emission flowing through each pixel circuit is controlled by an active element (generally, a thin film transistor (TFT)) provided inside the pixel circuit component current. That is, since the organic EL element is a current light emitting element, the gray scale of the color of light emission is obtained by controlling the amount of current flowing through the EL el...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/30H05B44/00
CPCG09G2300/0842G09G2310/0262G09G2320/043G09G2310/06G09G2300/0866G09G3/3233G09G2300/0819
Inventor 多田罗智史冨田昌嗣丰村直史内野胜秀
Owner SONY CORP