The Characterization of HDR OLED Display

Tian, Dalin; Xu, Lihao; Luo, M. Ronnier

doi:10.2352/issn.2470-1173.2019.10.iqsp-326

Cited by 4 publications

(13 citation statements)

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“…Channel independence, however, does not always apply to all displays. For some displays, the adjustment of the digital signal value of one channel affects the tristimulus values produced by the other two channels (known as “crosstalk effect”), making the above models inapplicable 2–8 . The crosstalk effect happens to many modern display technologies, such as liquid crystal displays (LCD), organic light‐emitting diode (OLED) displays, and polymer LED displays 9–11 .…”

Section: Introductionmentioning

confidence: 99%

“…In the Piecewise Partition (PP) model, 2 the Polynomial Compensation (PC) model, 5 the Compensation Error (PCE) model, 7 the Two‐primary Crosstalk (TPC) model, 12 the Partition Sub‐space Compensation (SC) model, 4 and the two LCD characterization models, 3,6 the polynomial functions are modeled with different orders and terms. In order to further improve the model accuracy, a 3D look‐up‐table (LUT) or multiple 2D LUTs with interpolations were also proposed 6,8,13 . These models, however, generally require measuring the tristimulus values of many combinations of digital signal values for deriving the coefficients or fitting the model.…”

Section: Introductionmentioning

confidence: 99%

“…For some displays, the adjustment of the digital signal value of one channel affects the tristimulus values produced by the other two channels (known as "crosstalk effect"), making the above models inapplicable. [2][3][4][5][6][7][8] The crosstalk effect happens to many modern display technologies, such as liquid crystal displays (LCD), organic light-emitting diode (OLED) displays, and polymer LED displays. [9][10][11] As illustrated in Figure 1A, when a voltage is applied on an OLED cell, the holes from the anode go through the hole transport layer (HTL) and meet the electrons from the cathode on the emitting layer, resulting in the current flows to produce light.…”

mentioning

confidence: 99%

“…Past studies [2][3][4][5][6][7][8]12,13 proposed several models to consider the crosstalk effects, which can be described using Equation (1). In these models, the tristimulus values X 0 Y 0 Z 0 derived based on the assumption of channel independence are modified using a component P(R,G,B) characterizing the crosstalk effects.…”

mentioning

confidence: 99%

“…In order to further improve the model accuracy, a 3D look-up-table (LUT) or multiple 2D LUTs with interpolations were also proposed. 6,8,13 These models, however, generally require measuring the tristimulus values of many combinations of digital signal values for deriving the coefficients or fitting the model. For example, the PP model requires the measurements of 91 combinations, the PC model requires 161 combinations, the PCE model requires 729 combinations, the CS model requires 191 combinations, and the LUT-based models require at least 125 combinations.…”

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confidence: 99%

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Color characterization model for OLED displays with crosstalk effects

Mao

Yang³

et al. 2023

Color Research & Application

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Conventional models (e.g., a Gain‐Offset‐Gamma model) were developed based on the assumption of channel independence. Modern displays (e.g., organic light‐emitting‐diode OLED displays), however, sometimes have crosstalk effects among the three channels, making these conventional models have poor performance. In this article, we propose a 3D piecewise model. It divides the display gamma encoded RGB space (i.e., R′G′B′) into 27 subspaces and characterizes the crosstalk effects between two and three channels based on the measurements of the tristimulus values of 64 combinations of digital signal values. The average color difference ΔE00 of the 41 combinations between the model predictions and the measurements was around 0.34, in comparison to the average of 3.61 by the GOG model, across nine uncalibrated OLED displays. In addition, for displays with breakpoints on each channel, a revision is proposed to divide the subspaces for maintaining the accurate predictions. The proposed model was also validated by calibrating 94 uncalibrated OLED displays to the standard P3 RGB specifications, resulting an average color difference ΔE00 reduced from 3.96 to 0.72.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Color characterization model for OLED displays with crosstalk effects

Mao

Yang³

et al. 2023

Color Research & Application

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To Build a Novel HDR/WCG Display Model

Tian

Xinye

et al. 2020

Lecture Notes in Electrical Engineering

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On the Validity of Virtual Reality Applications for Professional Use: A Case Study on Color Vision Research and Diagnosis

et al. 2021

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In recent years, there have been very important advances in graphic computing and technology related to the capture and representation of real objects in both 2 and 3 dimensions. One of these technologies is virtual reality, which can be incorporated into common tasks in research laboratories, especially in laboratories related to color vision and lighting research. To incorporate virtual reality devices into research tasks, newly developed applications must be validated with existing and known tests or techniques. The objective of this work was to study the validity of a commercial VR system for research and diagnosis in color vision. We carried out a comparative study on the behavior of these immersive systems for viewing 3D scenes in real time using a color vision test. In particular, we implemented a virtual version of the Farnsworth-Munsell 100 Hue test and compared the results obtained by 17 normal and 3 defective observers in both the physical and virtual tests. The results show that the functionality of both tests is very similar and that the diagnosis of both methods is equivalent. Detailed analysis of the results of both tests indicates that there is a slight difference in scale between the two tests. This difference in scale indicates a greater difficulty in the case of the virtual test but does not affect the final diagnosis. This could be due to the greater difficulty in using a head-mounted display (HMD).

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The Characterization of HDR OLED Display

Cited by 4 publications

References 0 publications

Color characterization model for OLED displays with crosstalk effects

Color characterization model for OLED displays with crosstalk effects

To Build a Novel HDR/WCG Display Model

On the Validity of Virtual Reality Applications for Professional Use: A Case Study on Color Vision Research and Diagnosis

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