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System and method for extracting correlation curves of organic light emitting devices

A technology of devices and curves, applied in the field of characteristic correlation curves, can solve problems such as inability to ensure accurate compensation

Active Publication Date: 2020-08-25
IGNIS INNOVATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the optical aging effects of OLEDs also depend on the stress conditions on individual pixels, and since the stress varies from pixel to pixel, precise compensation cannot be ensured unless a compensation tailored to a specific stress level is determined

Method used

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  • System and method for extracting correlation curves of organic light emitting devices
  • System and method for extracting correlation curves of organic light emitting devices
  • System and method for extracting correlation curves of organic light emitting devices

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Embodiment Construction

[0030] figure 1is an electronic display system 100 having an active matrix area or pixel array 102 in which an array of active pixels 104 are arranged in a row and column configuration. For ease of illustration, only two rows and two columns are shown. Outside the active matrix area (pixel array 102 ) is a peripheral area 106 in which peripheral circuits for driving and controlling the area of ​​the pixel array 102 are arranged. Peripheral circuitry includes a gate or address driver circuit 108 , a source or data driver circuit 110 , a controller 112 and an optional voltage source (eg, EL_Vdd) driver 114 . Controller 112 controls gate driver 108 , source driver 110 and voltage source driver 114 . Under the control of controller 112, gate driver 108 operates on address or select lines SEL[i], SEL[i+1], etc., where there is one address or select line in each row of pixels 104 in pixel array 102 Wire. In the pixel sharing configuration described below, the gate or address dri...

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Abstract

The present invention relates to a system for determining efficiency degradation of an organic light emitting device (OLED) in a plurality of array-based semiconductor devices having an array of pixels, the pixels comprising OLEDs. The system determines a relationship between changes in electrical operating parameters of the OLEDs in each of the array-based semiconductor devices and the degradation in efficiency of the OLEDs by using The determined relationship of the selected one is used to determine the efficiency degradation of the OLED, and to compensate for the efficiency degradation. The relationship between a change in said electrical operating parameter of said OLED in said array-based semiconductor device and said efficiency degradation of said OLED may be determined by using a test OLED associated with each said array-based semiconductor device. of the relationship.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Patent Application 14 / 314,514, filed June 25, 2014, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention relates generally to displays using light emitting devices such as OLEDs, and more particularly to extracting characteristic correlation curves under different stress conditions in such displays in order to compensate for aging of the light emitting devices. Background technique [0004] Active matrix organic light emitting device (AMOLED) displays offer the advantages of lower power consumption, manufacturing flexibility, and faster refresh rates relative to conventional liquid crystal displays. In contrast to conventional LCD displays, there is no backlight in AMOLED displays because each pixel is made of OLEDs of different colors that emit light independently. OLEDs emit light based on current supplied by a drive ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00G09G3/3225
CPCG09G3/006G09G3/3233G09G3/3291G09G2300/0413G09G2300/0819G09G2300/0842G09G2320/029G09G2320/043G09G2320/045G09G2360/145
Inventor 戈尔拉玛瑞扎·恰吉
Owner IGNIS INNOVATION