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Compensation systems and methods for display OLED degradation

A technology of emissive display and memory, applied in the field of image correction, which can solve the problems of uneven brightness, chemical properties and performance, brightness difference, aging, etc.

Pending Publication Date: 2020-01-31
IGNIS INNOVATION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Regardless of the backplane technology, all LED and AMOLED displays exhibit pixel-by-pixel brightness variations, mainly due to process or structural inhomogeneity, or aging due to prolonged operational use
Brightness non-uniformity in displays can also arise from natural differences in the chemistry and performance of the LED and OLED materials themselves

Method used

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  • Compensation systems and methods for display OLED degradation
  • Compensation systems and methods for display OLED degradation
  • Compensation systems and methods for display OLED degradation

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Embodiment Construction

[0024] To facilitate image correction, methods such as In-Pixel Compensation (IPC) or electrical measurements or a combination of IPC compensation and electrical measurements may also be used to obtain correction data for a particular display after singulation. The correction data is then stored on non-volatile memory (NVM) chips inside the display system and final product as initial correction data for subsequent processing and updating when further degradation occurs.

[0025] Although the embodiments described herein are in the context of AMOLED displays, it should be understood that the degradation correction systems and methods described herein are applicable to any other display that includes pixels that experience degradation similar to OLEDs described below.

[0026] It should be understood that the embodiments described herein relate to systems and methods of image correction and degradation compensation, and do not limit the operation of the display technologies under...

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Abstract

What is disclosed are systems and methods for compensating for display OLED degradation. Correction factors k for OLED degradation of each sub-pixel is modelled and tracked based on grey level, temperature, and time, and used to correct image data provided to an OLED display.

Description

technical field [0001] The present invention relates to image correction for emissive visual display technology, and in particular, to organic light emitting device (OLED) degradation compensation systems and methods for correcting images for active matrix organic light emitting diode device (AMOLED) displays. Background technique [0002] An OLED device is a light emitting diode (LED) in which the emitting electroluminescent layer is a film of an organic compound that emits light in response to an electric current. The organic layer is located between two electrodes; usually, at least one of these electrodes is transparent. Compared with conventional liquid crystal displays (LCDs), active matrix organic light emitting device (AMOLED) displays offer lower power consumption, manufacturing flexibility, faster response time, wider viewing angles, higher contrast ratio, more Light weight and adaptability to flexible substrates. An AMOLED display works without a backlight becau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G3/3225
CPCG09G3/3225G09G2320/0271G09G2320/041G09G2320/043G09G2320/048
Inventor 唐舒俊何俊虎
Owner IGNIS INNOVATION
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