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Electronic circuit, electronic equipment, electrooptical equipment and electronic machine

一种电子电路、电子装置的技术，应用在电路、电固体器件、仪器等方向，能够解决不能获得电光学元件辉度等级、延迟、数据电流高精度地提供等问题

Inactive Publication Date: 2008-07-30
ELEMENT CAPITAL COMMERCIAL CO PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This problem is particularly evident in the case of a method in which the data signal is provided as a data current
That is, due to the influence of the wiring capacitance of the data line, the data current supplied to each pixel circuit may not be supplied with high accuracy within a predetermined writing period.
As a result, the data current writing operation in the pixel circuit is delayed, so that the correct luminance level of the electro-optical element cannot be obtained.

Method used

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  • Electronic circuit, electronic equipment, electrooptical equipment and electronic machine
  • Electronic circuit, electronic equipment, electrooptical equipment and electronic machine
  • Electronic circuit, electronic equipment, electrooptical equipment and electronic machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Below, refer to Figure 1 ~ Figure 4 Example 1 in which the present invention is embodied will be described. figure 1 It is a circuit block diagram showing the circuit configuration of the organic EL display of the first embodiment. figure 2 It is a circuit block diagram showing the internal circuit configuration of the display unit and the data line drive circuit. image 3 is a diagram showing a pixel circuit applicable to the first embodiment. Figure 4 It is a circuit diagram of the buffer circuit of Example 1.

[0049] The controller 11 of the organic EL display 10 and the scanning line driving circuit 13 and the data line driving circuit 14 may also be composed of independent electronic devices. For example, the controller 11, the scanning line driving circuit 13, and the data line driving circuit 14 may each be constituted by a monolithic semiconductor integrated circuit device. Furthermore, all or part of the scan line driving circuit 13 and the data line dr...

Embodiment 2

[0102] Below, refer to Figure 5 and Image 6 , the application of the organic EL display 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.

[0103] Image 6 It is a perspective view showing the structure of a mobile personal computer. exist Image 6 Among them, a personal computer 50 includes a main body 52 having a keyboard 51 and a display unit 53 using the organic EL display 10 .

[0104] Even in this case, the display unit 53 using the organic EL display 10 can exhibit the same effects as those of the above-described embodiment. As a result, it is possible to provide a portable personal computer 50 having a data line driving circuit and a buffer circuit that can be configured with a simpler circuit.

[0105] Figure 7 It is a perspective view showing the structure of a mobile phon...

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PUM

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Abstract

The invention seeks to provide an electronic circuit, an electronic device and an electronic apparatus. A first buffer circuit (30) is formed of second, third and sixth transistors (Tr2,Tr3,Tr6) and a first capacitor (C1). A second buffer circuit (40) is formed of fourth, fifth and seventh transistors (Tr4,Tr5,Tr7) and a second capacitor (C2). The drain of the second transistor (Tr2) of the first buffer circuit (30) and the drain of the fourth transistor (Tr4) of the second buffer circuit (40) are connected to the first transistor (Tr1). Furthermore, the drain of the sixth transistor (Tr6) of the first buffer circuit (30) is connected to the drain of the seventh transistor (Tr7) of the second buffer circuit (40) through an analog output terminal (Po).

Description

technical field [0001] The present invention relates to an electronic circuit, an electronic device and an electronic machine. Background technique [0002] In recent years, electro-optical devices using organic EL elements have attracted attention. The organic EL element is a self-luminous element, and since it does not require a backlight, it is expected to realize a display device with low power consumption, a wide viewing angle, and a high contrast ratio. [0003] It has a data line driver circuit that supplies a data signal corresponding to the luminance level of the organic EL element to each pixel circuit. The data line driving circuit is connected with a controller outputting image data. The data line driver circuit has a plurality of single line driver connections connected to the respective pixel circuits through data lines. Each single line driver generates a data signal according to image data output from the controller, and supplies the generated data signal ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/30G09G3/00H01L51/50G09G3/20G09G3/22G09G3/32
CPCG09G2300/0842G09G3/325G09G3/3275G09G3/22G09G3/3216G09G2320/0223G09G2300/06G09G3/30
Inventor 河西利幸
Owner ELEMENT CAPITAL COMMERCIAL CO PTE LTD