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Orgainc light-emitting diode display panel

A technology of light-emitting diodes and display panels, used in static indicators, instruments, electrical components, etc., can solve problems such as RC delay, serious RC delay, and insufficient charging

Inactive Publication Date: 2004-10-13
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It also causes RC delay, which in turn causes the scanning signal in the scanning line 106 to also be delayed.
[0016] As the size of the OLED display panel 100 increases, the sum of the parasitic capacitances generated between the cathode electrode 108 and the data line 102 and the scan line 106 is also relatively increased, and the resulting RC delay is also more serious.
Even, the delay of the data signal and the scanning signal caused by the RC delay will cause insufficient charging and cross talk of the OLED display panel 100, which will greatly affect the OLED display panel 100.
In addition, since the power consumption (capacitivelosses power) of the OLED display panel 100 is directly proportional to the parasitic capacitance, when the parasitic capacitance becomes larger as the size of the OLED display panel 100 increases, the power consumption of the OLED display panel 100 is also relatively larger. This will consume quite a lot of power

Method used

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  • Orgainc light-emitting diode display panel
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  • Orgainc light-emitting diode display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Please refer to Figure 4 , which shows a circuit structure diagram of the OLED display panel according to Embodiment 1 of the present invention. exist Figure 4 Among them, the OLED display panel 400 at least includes a data driving circuit 420, a scanning driving circuit 430, a plurality of data lines 402, a plurality of power lines 404, a plurality of scanning lines 406, a plurality of pixel regions 410, a plurality of cathode electrodes 408, a cathode voltage Sources 440a and 440b, metal layers 450a, 450b, 450c and 450d, contact holes 460a, 460b, 460c and 460d.

[0053] A plurality of data lines 402 and a plurality of scan lines 404 define several pixels, and each pixel has a pixel area 410 . And all the pixel regions 410 form a so-called pixel region array 415 . Each data line 402 is driven by the data driving circuit 420 and is used to respectively transmit the data signal (data signal) provided by the data driving circuit 420 to the corresponding pixel. In ad...

Embodiment 2

[0058] Please refer to Figure 5 , which shows the circuit structure diagram of the OLED display panel according to the second embodiment of the present invention. exist Figure 5 In this embodiment, the OLED display panel 500 and Figure 4 The OLED display panel 400 shown in Embodiment 1 is different in that a plurality of cathode electrodes 508 cover part of the pixel area array 415, the metal layers 450b and 450d, and part of the metal layers 450a and 450c in the manner of parallel data lines 402, There is a gap 512 between two adjacent cathode electrodes 508 , and the gap 512 is located above the data line 402 and the power line 404 . In addition, the cathode electrode 508 is electrically connected to the metal layers 450a, 450b, 450c and 450d through the contact holes 460a, 460b, 460c and 460d, so that the cathode electrode 408 can be electrically connected to the cathode voltage sources 440a and 440b.

[0059] Therefore, the design of the cathode electrode 508 in this...

Embodiment 3

[0061] Please refer to Figure 6 , which shows the circuit structure diagram of the OLED display panel according to the third embodiment of the present invention. exist Figure 6 In this embodiment, the OLED display panel 600 and Figure 4 The OLED display panel 400 shown in Embodiment 1 is different in that a plurality of cathode electrodes 608 cover part of the pixel area array 415, the metal layers 450a and 450c, and part of the metal layers 450b and 450d in a manner of parallel scanning lines 406, There is a gap 612 between two adjacent cathode electrodes 608 , and the gap 612 is located above the scan line 606 . The cathode electrode 608 has a plurality of notches 614 , and the notches 614 are located near the intersections of the data lines 402 , the power lines 404 and the scan lines 406 . Even, the gap 614 can also be located above the data line 402 and the power line 404 , so that the cathode electrode 608 only covers less than 90% of the entire area of ​​the data ...

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PUM

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Abstract

The invention relates to an organic LED display panel, including many data lines, many scanning lines and many cathode electrodes. These scanning and data lines define many pixels. Each pixel has a pixel region, and these pixel regions form a pixel region array. These cathode electrodes cover part of the pixel region array in a mode of parallel scanning or data lines, and there is a space between the two adjacent cathode electrodes. These spaces are above the scanning or data lines, to avoid producing parasitic capacitors, and preventing RC delay happening.

Description

technical field [0001] The present invention relates to an organic light emitting diode (OLED) display panel, and in particular to a display panel capable of avoiding parasitic capacitance and resistance-capacitance time delay between a cathode electrode and a scan line or a data line. capacitytime delay, RC delay) organic light-emitting diode display panel. Background technique [0002] The OLED display panel can emit light by itself in a current driven or voltage driven manner. Unlike liquid crystal display panels (LCD panels), there is no need to add a backlight at the rear. Therefore, OLED display panels have the advantages of self-illumination, wide viewing angles, and full-color display. Among them, the OLED display panel can be applied to electronic devices such as mobile phones and personal digital assistants (PDAs), becoming a display panel with great potential today. [0003] Please refer to figure 1 , which shows a circuit structure diagram of a conventional OL...

Claims

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Application Information

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IPC IPC(8): G09G3/3225H01L27/32
Inventor 孙文堂
Owner AU OPTRONICS CORP