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Electronic device, method for driving electronic device, electrooptical device and electronic apparatus

An electronic device and driven technology, which is applied in electric light sources, identification devices, lighting devices, etc., can solve problems such as difficulty in obtaining luminance and characteristic changes

Inactive Publication Date: 2003-10-15
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when a predetermined data signal is input, it is difficult to obtain desired luminance
[0006] In addition, there is a problem that the characteristics change with the aging of active elements or photoelectric elements constituting the pixel circuit.

Method used

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  • Electronic device, method for driving electronic device, electrooptical device and electronic apparatus
  • Electronic device, method for driving electronic device, electrooptical device and electronic apparatus
  • Electronic device, method for driving electronic device, electrooptical device and electronic apparatus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] refer to Figure 1-Figure 5Embodiment 1 of the present invention will be described.

[0043] figure 1 A circuit block diagram showing a circuit configuration of an organic EL display 10 as an optoelectronic device. figure 2 A circuit block diagram showing the internal circuit configuration of the display panel and the data line drive circuit. image 3 A circuit diagram showing the internal circuit configuration of a pixel circuit.

[0044] figure 1 Among them, the organic EL display 10 includes a display panel portion 11 , a data line driving circuit 12 , a scanning line driving circuit 13 , a memory 14 , an oscillation circuit 15 , a selection circuit 16 and a control circuit 17 .

[0045] The elements 11-17 of the organic EL display 10 may also be constituted by independent electronic components. For example, each element 12-17 may be constituted by a semiconductor integrated circuit device of one chip. In addition, all or part of the respective elements 11-17 ...

Embodiment 2

[0092] Embodiment 2 will be described below. In the first embodiment, the inspection device 19 is an external device, but in this embodiment, the inspection device 19 is configured as the same elements as the elements 11-17 of the organic EL display 10 of the first embodiment. Therefore, the inspection device 19 is built together with the organic EL display 10 in mobile electronic equipment such as a mobile phone, a PDA, and a personal computer on which the organic EL display 10 is mounted.

[0093] In addition, since it is characterized by being built into a mobile electronic device, for the convenience of description, the same parts as those in Embodiment 1 will be omitted and the characteristic parts will be described.

[0094] Figure 6 The circuit of the inspection device 19 of this embodiment is shown.

[0095] exist Figure 6 Among them, the current detection circuit section 31 is composed of current detection circuits 31a whose number corresponds to the data lines X...

Embodiment 3

[0107] Below, according to Figure 7 and Figure 8 Application to electronic equipment of the organic EL display 10 as the photovoltaic device described in Embodiments 1 and 2 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.

[0108] Figure 7 It is a perspective view showing the configuration of a mobile personal computer. exist Figure 7 Among them, a personal computer 50 includes a main body 52 on which a keyboard 5 is arranged, and a display unit 53 using the above-mentioned organic EL display 10 . In this case, using the display unit 53 of the organic EL display 10 exerts the same effects as those of the above-described embodiment. As a result, the personal computer 50 can realize image display with few defects.

[0109] Figure 8 It is a perspective view showing the structure of a mobile phone. exist Figure 8 Among them, a mobile phone 60 is provided ...

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PUM

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Abstract

The invention provides an electronic circuit, electronic device, method of driving the electronic circuit, electrooptical device, and electronic equipment for detecting operational characteristics of the electronic circuit at a high precision. A pixel circuit 20 includes a switching transistor Q13 connected between a driving transistor Q11 and organic EL element 21, and detecting transistor Q14 for supplying a current detecting circuit 19a with a driving current output by the driving transistor Q11. A holding capacitor C1 is supplied with test data voltage Vdata by turning on a switching transistor Q12 with the switching transistor Q13 turned off. The current detecting circuit 19a is supplied with a driving current from the driving transistor through the detecting transistor Q14 by turning on the detecting transistor Q14 with the switching transistor Q13 turned off. The current detecting circuit 19a thus detects the driving current in response to the test data voltage Vdata.

Description

technical field [0001] The invention relates to an electronic circuit, an electronic device, a driving method of the electronic circuit, a photoelectric device and electronic equipment. Background technique [0002] In recent years, optoelectronic devices using organic EL elements have attracted attention as display devices of optoelectronic devices. In such an optoelectronic device using an organic EL element, one driving method is active matrix driving. [0003] In a photoelectric device of an active matrix driving method, in order to control the luminance of an organic EL element, a pixel circuit is provided for each organic EL element. The luminance gradient of the organic EL element in each pixel circuit is controlled by supplying a data signal (voltage value or current value) corresponding to the luminance gradient to the storage capacitance of the pixel circuit. That is, the charge corresponding to the set luminance gradient is charged to the storage capacitor. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50G09F9/30G09G3/20G09G3/30H05B33/14
CPCG09G2330/12
Inventor 城宏明
Owner BOE TECH GRP CO LTD
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