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Organic light emitting diode pixel structure, display panel and electronic display device

A light-emitting diode and pixel structure technology, applied in static indicators, instruments, etc., can solve the problems of improving screen resolution, reducing pixel size, disadvantages, etc.

Active Publication Date: 2015-03-04
SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solution in the prior art requires an additional reference power supply, which is obviously not conducive to improving the screen resolution, and is not conducive to reducing the pixel size

Method used

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  • Organic light emitting diode pixel structure, display panel and electronic display device
  • Organic light emitting diode pixel structure, display panel and electronic display device
  • Organic light emitting diode pixel structure, display panel and electronic display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] image 3 It is a circuit diagram of an OLED pixel structure according to Embodiment 1 of the present invention. Such as image 3 As shown, the organic light emitting diode pixel structure has scan lines and data lines, and also includes:

[0025] The first P-channel transistor 310 has a first gate 311, a first source 312 and a first drain 313, and the first source 312 is connected to the pixel power supply 370;

[0026] The second P-channel transistor 320 has a second gate 321, a second source 322 and a second drain 323, the second drain 323 is connected to the second gate 321, the second gate 321 is connected to the first gate Pole 311 connection;

[0027] a capacitor 330, connected between the first gate 311 and the first source 312;

[0028] The first switch element 340 is connected between the data line and the second source electrode 322, and the switch state of the first switch element 340 is determined according to the control signal of the first scan line Sc...

Embodiment 2

[0047] Embodiment 2 of the present invention provides another OLED pixel structure. Figure 7 It is a circuit diagram of an OLED pixel structure according to Embodiment 2 of the present invention. Such as Figure 7 As shown, the pixel structure has scan lines and data lines, and also includes:

[0048] The first N-channel transistor 310 has a first gate 311, a first source 314 and a first drain 315, and the first source 314 is connected to a fixed low potential;

[0049] The second N-channel transistor 320 has a second gate 321, a second source 324 and a second drain 325, the second drain 325 is connected to the second gate 321, and the second gate 321 is connected to the first gate Pole 311 connection;

[0050] a capacitor 330, connected between the first gate 311 and the fixed low potential;

[0051] The first switching element 340 is connected between the data line and the second source 324, and the switching state of the first switching element 340 is determined accord...

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Abstract

The embodiment of the invention provides an organic light emitting diode pixel structure, a display panel and an electronic display device. The pixel structure comprises scanning lines, a data wire, a first P-channel transistor, a second P-channel transistor, a capacitor, a first switch element, a second switch element and an organic light emitting diode, wherein the first P-channel transistor is provided with a first grid, a first source and a first drain, and the first source is connected to a pixel power supply; the second P-channel transistor is provided with a second grid, a second source and a second drain; the second drain is connected with the second grid, and the second grid is connected with the first grid; the capacitor is connected between the first grid and a fixed potential; the first switch element is connected between the data wire and the second source and controlled by a control signal of a first scanning line; the second switch element is connected between the first grid and the first drain and controlled by the control signal of a second scanning line before the first scanning line; and the positive electrode of the organic light emitting diode is connected to the first drain, and the negative electrode of the organic light emitting diode is connected to a fixed low potential. According to the pixel structure, the pixel size can be reduced, and the screen resolution is improved.

Description

technical field [0001] The present invention relates to the field of organic light emitting diode display technology, in particular to an organic light emitting diode pixel structure, a display panel and an electronic display device. Background technique [0002] Due to the major breakthrough of organic light-emitting materials, organic light-emitting display technology has been valued by more and more flat panel display manufacturers. Active organic light-emitting display technology has obvious advantages in display brightness, contrast ratio, response rate and viewing angle, and it is driven with thin-film transistor backplane technology. However, since the organic light-emitting display device is a current element, the Vth (threshold voltage) drift of the driving transistor will cause abnormal display of the device. figure 1 It is a circuit diagram of a specific Vth compensation circuit in the prior art. Such as figure 1 As shown, M1 and M2 are a group of PTFTs (P-type...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/32G09G3/3225
Inventor 钱栋曾章和吕博嘉
Owner SHANGHAI TIANMA MICRO ELECTRONICS CO LTD
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