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Electronic circuit electrooptical device and electronic instrument

A technology for electronic circuits and electro-optical devices, which is applied to instruments, electrical components, static indicators, etc., and can solve problems such as poor display quality of electro-optical devices.

Inactive Publication Date: 2006-12-06
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the characteristics of the luminance level of the organic EL element vary for each pixel circuit, so the display quality of the electro-optical device is poor.

Method used

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  • Electronic circuit electrooptical device and electronic instrument
  • Electronic circuit electrooptical device and electronic instrument
  • Electronic circuit electrooptical device and electronic instrument

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0126] Below, refer to Figure 4 and Figure 5 Application of the organic EL display 10 as the electro-optical device described in Example 1 to electronic equipment will be described. The organic EL display 10 can be applied to various electronic devices such as mobile personal computers, mobile phones, and digital cameras.

[0127] Figure 4 It is a perspective view showing the structure of a mobile personal computer. exist Figure 4Among them, a personal computer 50 includes a main body 52 having a keyboard 31 and a display unit 53 using the organic EL display 10 . In this case, the display unit 53 using the organic EL display 10 exhibits the same effects as those of the above-described embodiment. As a result, a mobile personal computer 50 having a display section 53 excellent in luminance level can be provided.

[0128] Figure 5 It is a perspective view showing the structure of a mobile phone. exist Figure 5 Among them, a mobile phone 60 has a plurality of opera...

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PUM

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Abstract

Provided is an electronic circuit, an electro-optical device, and an electronic apparatus in which a high accuracy of predetermined analog current can be supplied by suppressing variations of threshold value voltage of each current generating transistor. A voltage rising transistor Tc of a compensating circuit part 40 for compensating each threshold value voltage at first to sixth current-supplying transistors 33a to 33f is arranged and is formed. Further, a source of the voltage rising transistor Tc at the compensating circuit part 40 is connected to an input port Pi of a digital-analog converting part 30. Further, a drain of the voltage rising transistor Tc is connected to each gate of the first to sixth current-supplying transistors 33a to 33f. Further, a reference voltage Vref supplied from a power source supply part to the input port Pi is increased at the compensating circuit part 40 as much as the threshold voltage value of the first to sixth current-supplying transistors 33a to 33f for supplying to each gate of the first to sixth current-supplying transistors 33a to 33f.

Description

technical field [0001] The present invention relates to electronic circuits, electro-optical devices and electronic instruments. Background technique [0002] In recent years, electro-optical devices using current-driven elements called organic EL elements have attracted attention. There is an active matrix driving method as one of driving methods of an electro-optical device using such an organic EL element. [0003] An electro-optical device of an active matrix driving method includes a display panel in which a plurality of pixel circuits including organic EL elements are arranged in a matrix. The pixel circuit controls the light emission luminance level of the organic EL element according to the signal supplied to the pixel circuit. [0004] More specifically, in the electro-optical device of the active matrix driving method, the data lines are arranged on the display unit. The data line is connected to each pixel circuit. Each pixel circuit is connected to the data l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/30G09G3/20G09G3/36H03M1/08H03M1/74
CPCG09G3/3696G09G3/3659G09G2320/0209G09G3/30
Inventor 河西利幸
Owner SEIKO EPSON CORP