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Display apparatus and drive control method thereof

a technology of display apparatus and drive control method, which is applied in the direction of instruments, computing, electric digital data processing, etc., can solve the problems of deterioration of display image quality, inability to properly execute gradation display corresponding to image data, and inability to write properly, etc., to achieve favorable display quality

Active Publication Date: 2010-08-10
SOLAS OLED LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019]The present invention has an advantage in that the invention can provide a display apparatus which comprises an active matrix type display panel and displays image information corresponding to display data, the apparatus being capable of displaying moving images with a favorable display quality while being capable of displaying image information at an appropriate gradation corresponding to the display data, and also can provide a display drive method thereof.

Problems solved by technology

However, on the other hand, in the display of moving images, image information displayed in the previous frame period can become visually recognized more easily as an afterimage, and consequently, blurs and stains of the image information occur, which will lead to the deterioration of display image quality.
In this manner, when the writing period of the image data (display data) is shortened so that the writing operation must be performed at a high rate, a writing insufficiency occurs owing to the insufficiency of the time for writing the image data to each display pixel with respect to a signal delay generated resulting from a CR time constant produced by a resistance component parasitic on signal wirings of a display panel and a capacity component, etc.
Consequently, gradation display corresponding to the image data may not be executed properly.

Method used

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Experimental program
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first embodiment

[0050]First, a schematic configuration of a display apparatus according to a first embodiment will be explained with reference to the drawings. FIG. 1 is a schematic block diagram showing the first embodiment of the display apparatus according to the invention.

[0051]FIG. 2 is a structural diagram of a primary part, showing one example of a display panel applied to the display apparatus according to the first embodiment and a peripheral circuit thereof.

[0052]Incidentally, in the embodiment shown hereinbelow, there will be explained a self-luminous type display apparatus wherein a display panel has a configuration in which a plurality of display pixels provided with self-luminous type light emitting elements are arranged in two dimensions as optical elements, the display apparatus displaying image information by allowing the optical elements of each of the display pixels to perform a light emitting operation with a luminance gradation corresponding to display data (image data). Howeve...

second embodiment

[0128]Next, there will be explained a second embodiment of the display apparatus according to the present embodiment and the display drive method thereof with reference to the drawings.

[0129]FIG. 9 is a schematic block diagram showing the second embodiment of the display apparatus according to the present invention.

[0130]FIG. 10 is a structural diagram of a primary part, showing one example of a display panel applied to the display apparatus according to the embodiment and a peripheral circuit thereof.

[0131]FIG. 11 is a circuit structural diagram showing one example of a display pixel (a display drive circuit) which is applied to the display apparatus according to the embodiment.

[0132]Here, the same components as those of the first embodiment (refer to FIGS. 1 to 3) described above are denoted by the same or equivalent reference numerals, and an explanation thereof is simplified.

[0133]In the above-described first embodiment, as shown in FIG. 3, a circuit configuration comprising a p...

third embodiment

[0190]Next, there will be explained a display apparatus according to a third embodiment and a display drive method thereof with reference to the drawings.

[0191]FIG. 17 is a structural diagram of a primary part, showing one example of a display panel applied to the display apparatus according to the third embodiment.

[0192]FIG. 18 is a structural diagram of a primary part, showing one example of a peripheral circuit of the display panel applied to the display apparatus according to the third embodiment.

[0193]In the same manner as in the case of the second embodiment, the third embodiment has a configuration in which a voltage between a gate and a source of a display drive switching element of each display pixel EM is set to 0V (no voltage) or a negative voltage (a reverse bias voltage) to suppress the change in threshold voltage of the switching element in a non-light emitting operation period (a non-display operation period) other than a light emitting operation (a display operation)...

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PUM

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Abstract

A display apparatus is disclosed. A display panel includes a plurality of display pixels arranged at intersections of a plurality of scanning lines and a plurality of data lines. A scanning drive unit sequentially applies a scanning signal to each of the scanning lines and sets the corresponding display pixels to a selection state. A data drive unit generates a gradation signal corresponding to the display data and supplies the gradation signal to the display pixels. A power source drive unit supplies to the display pixels a drive voltage for controlling a drive state of each of the display pixels. A drive control unit controls the power source drive unit to operate to set the display pixels to a non-display operation state during a non-display period, and controls the scanning drive unit to operate to set the display pixels to the selection state during the non-display period.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is based upon and claims the benefit of priority from prior Japanese Patent Applications No. 2005-150566, filed May 24, 2005; and No. 2005-153382, filed May 26, 2005, the entire contents of both of which are incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a display apparatus and a display drive method thereof. In particular, the invention relates to a display apparatus and a drive control method thereof, the apparatus being provided with a display panel having a plurality of current control type optical elements arranged thereon to display image information.[0004]2. Description of the Related Art[0005]In recent years, light weight and thin type display devices which consume a lower amount of electric power are conspicuously prevalent as monitors and displays of personal computers and video equipment. In particular, liquid crystal display (LC...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): G09G5/00
Inventor OZAKI, TSUYOSHIOGURA, JUN
Owner SOLAS OLED LTD