A 13‐bit universal column driver for various displays of OLED and LCD

Ryu, Sei-Hyung; Baek, Donghoon; Lim, Hyun‐Wook; Han, Sang-Kyo; Ryu, Koungmin; Park, Kwang‐Hyun; Park, Jin-Yong; Lee, Jungmin; Kim, Tae-Jin; Lee, Jae-Youl; Kim, Gyeongnam

doi:10.1002/jsid.437

Cited by 5 publications

(1 citation statement)

References 12 publications

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“…This allows checking the basic function of the display; however, no correlation to the data to be displayed. For OLEDs (and LEDs), it is obvious that a current is drawn by a subpixel, which depends on its gray level (luminance); see, for example, Ryu et al 14 We have measured several LCDs where the current of the column (row, line, and data) drivers is also related to the gray level. This is described more in detail below.…”

Section: Electrical Measurementmentioning

confidence: 99%

Advanced methods for safe visualization on automotive displays

et al. 2020

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Camera Monitor Systems (CMSs), for example, for backup cameras or mirror replacements, become increasingly important and already cover safety aspects such as guaranteed latency and no frame freeze. Today's approaches deal only with supervision of the digital interface, LCD backlight, and power supply. This paper introduces methods for advanced safety monitoring of panel electronics and optical display output that aim to enable future CMS based automotive use cases. Our methods are based on correlation of physical measurements with predicted values derived from a corresponding display model. This model was made via calibration measurements and many test patterns. Correlation of the monitoring results with predicted values corresponds to the probability that the RGB data are shown as intended. This implies that an overlying system, an Automotive Safety Integrity Level (ASIL) Prepared Video Safety System (APVSS), ensures that only safety verified RGB data are provided to the panel electronics. In case of failures, our methods enable a safe system state, for example, by deactivating the panel. An additional challenge is to allow graceful degradations, a safe but slightly degraded image may provide a better customer experience compared with no information. We successfully verified our approach by a fully functional prototype and extensive evaluation towards "light-to-light" (camera to display output) supervision.

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Section: Electrical Measurementmentioning

confidence: 99%