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Display device and pixel detection method thereof

A display device and pixel circuit technology, applied to static indicators, instruments, etc., can solve problems affecting light-emitting diode performance, degradation, and reduced service life

Active Publication Date: 2021-05-28
AU OPTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will increase the current stress of the drive transistor, which will easily cause deterioration and reduce the service life
[0004] In a pixel circuit design with at least two light-emitting diodes, it is impossible to confirm the light-emitting performance or failure status of each light-emitting diode in the pixel circuit, so that it is impossible to individually compensate or replace a specific light-emitting diode
[0005] Furthermore, in the pixel circuit design of at least two LEDs, since the LEDs are coupled in parallel, when the photoelectric characteristics of the LEDs are different from those of other LEDs, the light-emitting performance of other LEDs will be further affected.
resulting in unpredictable display results

Method used

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  • Display device and pixel detection method thereof
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  • Display device and pixel detection method thereof

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Embodiment Construction

[0039] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0040] Figure 1A It is a schematic circuit diagram of a display device according to an embodiment of the present invention. Please refer to Figure 1A , the display device 100 includes a display panel 110 and a plurality of current detection circuits (such as CSU1, CSU2). The display panel 110 includes a plurality of pixel circuits SP1, a plurality of first detection common lines Lcom1 and a plurality of second detection common lines Lcom2, a plurality of first switches S1, a plurality of second switches S2, a plurality of third switches S3 and As for the multiple fourth switches S4, for the convenience of description, the number of the above elements is taken as a single example, but this embodiment of the present invention is not limited thereto. Wherein, the detection common lines Lcom1 a...

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Abstract

The invention provides a display device and a pixel detection method of the display device. The display device includes a display panel and a plurality of current detection circuits. The display panel includes multiple pixel circuits, multiple first detection common lines, and multiple second detection common lines. A plurality of current detection circuits are used to receive the first light emitting current of the corresponding pixel circuit during detection to determine whether the first light emitting element of the corresponding pixel circuit is normal, and receive the second light emitting current of the corresponding pixel circuit to determine the second light emitting current of the corresponding pixel circuit. Whether the light emitting element is normal.

Description

technical field [0001] The present invention relates to a display device, and in particular to a display device capable of performing pixel detection operations. Background technique [0002] With the advancement of display technology, light-emitting diodes (Light-Emitting Diode, LED) have been widely used in display technology, and active-matrix organic light-emitting diodes (Active-Matrix Organic Light-Emitting Diode, AMOLED) and micro light-emitting diodes The application of (MicroLED, μLED) to light-emitting diode displays is one of the main development focuses of light-emitting diode display technology. Moreover, in order to ensure a stable yield rate of the LED display and a uniform display effect, in the pixel circuit of the LED display, each pixel circuit has a circuit design of at least two LEDs. However, the above circuit design may cause the following situations. [0003] First, when the pixel circuit is displaying, the driving transistor in the pixel circuit ne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00
CPCG09G3/006
Inventor 洪嘉泽郭庭玮徐圣淯林振祺郭家玮
Owner AU OPTRONICS CORP