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Electrooptical device, matrix base plate and electronic machine

By adopting a low-resistance backbone and main power line cross-wiring structure in large displays, combined with auxiliary power line and scan line driving technology, the problem of power wiring resistance and data line number is solved, and equal power supply and stable display are achieved.

Inactive Publication Date: 2004-05-12
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in order to realize a large-area display using a current-driven light-emitting element such as an organic EL element, how to reduce the increase in power consumption due to the wiring resistance of the power supply wiring and ensure the uniformity of the display becomes a problem.
If the distribution of current supplied to the entire image is not uniform, display instability will occur, which will become a major cause of display performance degradation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Hereinafter, this embodiment will be described with reference to the drawings.

[0052] figure 1 This is the overall configuration diagram of the organic EL display panel. The board includes a plurality of pixels 10 arranged in a matrix of N rows and M columns, and includes a pixel area 11 for forming a pixel matrix, and scan line drivers 12-1 and 12-2 for outputting scan line signals to each pixel 10. The active matrix substrate 100 and ten driver IC chips 14-1 to 14-10 are wire-bonded on the edge of the substrate 100. The driver IC chips 14-1 to 14-10 include data line drivers. In addition to supplying data signals to the respective pixels 10, the driver IC chips 14-1, 14-5, 14-6, 14 - 10 is provided with a power supply circuit to supply power to the substrate 100 . The driver IC chips 14-1 to 14-10 are TAB (TapeAutomated Bonding) packaged in a tape carrier, and their output leads 15 are connected to the anisotropic conductive film through electrode terminals (not ...

Embodiment 2

[0063] 4 is an explanatory diagram of a power supply wiring layout according to Embodiment 2 of the present invention, Figure 6It is a main circuit configuration diagram of the pixel 10 located in n rows and m columns in this embodiment. figure, with Figure 3 as well as Figure 5 The same symbols denote the same components, and their descriptions are omitted. exist Figure 6 In the red pixel 10, the pixel 10 consists of a switching transistor Tr1 whose gate terminal is connected to the scanning line 17-(3n-2), a holding capacitor C that holds a data signal supplied from the data line Xm during one frame period, and a pixel 10 composed of The light-emitting part OLED composed of organic EL elements receives from the main power line V R The drive transistor Tr2 is configured to supply the power supply and supply the drive current to the light emitting part OLED. The green and blue pixels 10 also adopt the same circuit configuration, and receive power from their respective m...

Embodiment 3

[0065] Figure 7 It is an explanatory diagram of the power supply wiring layout of Embodiment 3 of the present invention. In this figure, for simplification of description, only the power wiring is shown, and the data lines, scanning lines, cathode contacts, etc. are not shown. In this embodiment, as in Embodiment 1, the backbone power supplies 16-1 to 16-3 are arranged near the side edge on the left side of the pixel area 11 in the figure, and the backbone power supplies 16-4 to 16-6 The layout is near the outside of the side edge on the right side of the illustration of the pixel region 11 . The main power supply lines 16-1 and 16-4 are power supply wirings for supplying anode power to the red organic EL elements, and are connected to a plurality of main power supply lines V formed in a rectangular shape in the row direction in the pixel region 11. R connect. Similarly, the main power supply lines 16-2 and 16-5 are power supply wirings for supplying anode power to green o...

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PUM

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Abstract

Provided is a power source wiring structure preferred for a large type display. An electro-optical device according to the present invention includes a pixel area 11 including electro-optical elements driven by power supplied from power-supply circuits 14-1 to 14-10. The electro-optical device includes basic power-supply lines 16-1 to 16-6, which receive a power-supply voltage output from the power-supply circuits 14-1 to 14-10 and which are formed on the upper portion of a substrate, and includes main power-supply lines VR, VG, and VB, which intersect the basic power-supply lines 16-1 to 16-6 and which are formed on the upper portion of the substrate. The power-supply voltage is supplied to the electro-optical elements via the main power-supply lines VR, VG, and VB.

Description

technical field [0001] The present invention relates to a power supply wiring structure of an electro-optical device suitable for a large display panel. Background technique [0002] Since the organic EL element is a current-driven self-luminous element, it does not require a backlight, has the advantages of low power consumption, high viewing angle, and high contrast, and is used in small and medium-sized displays such as mobile phones and personal digital assistants. . An organic EL element is an electro-optic element that sandwiches a light-emitting layer containing a fluorescent substance between an anode and a cathode. A forward bias current is supplied between the two electrodes, and holes injected from the anode and electrons injected from the cathode are recombined. Occasionally recombine energy and shine by itself. In a conventional active matrix driven organic EL display panel, the anode power supply wiring is generally arranged in the pixel area of ​​the active ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/06G09F9/00G09F9/30G09G3/20G09G3/30G09G3/32H01L27/00H01L27/32H01L51/50H05B33/14H05B33/26
CPCG09G2300/0842H01L27/3276G09G3/3233G09G2310/0297G09G2310/0221G09G2300/0426H01L27/3211H10K59/35H10K59/131H05B33/26
Owner SEIKO EPSON CORP