P‐47: New Signal Processing Method to Improve Image Quality of RGBW Display

Kabe, Masaaki; Nagatsuma, Toshiyuki; Higashi, Amane; Nakahara, Tsutomu; Ikeda, Kojiro; Goto, Fumitaka; Sakaigawa, Akira

doi:10.1002/j.2168-0159.2014.tb00299.x

Cited by 2 publications

(1 citation statement)

References 3 publications

(6 reference statements)

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“…This is one of the technologies to improve the reflectance and contributes to a low‐power solution. The algorithm can keep RGB pixel ratio and image quality by replacing the white pixel . Table and Figure are 9.7‐in reflective panel specification and photograph displayed on the panel, respectively.…”

Section: Resultsmentioning

confidence: 99%

A full integration of electromagnetic resonance sensor and capacitive touch sensor into LCD

et al. 2019

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We have developed a transmissive and reflective LCD that integrates electromagnetic resonance (EMR) and capacitive touch sensors using existing in-cell process. This development has been achieved by utilizing our hybrid-in-cell technology with low resistance material for the RX, which is an improvement of over 80% compared with conventional indium thin oxide (ITO) material. For EMR detection, we have slightly modified the TX layer used for capacitive touch sensing, by making a coil loop that generates a magnetic field on the panel. The direction of current on the coil can be modulated by the lowtemperature polycrystalline silicon (LTPS) circuit. Our in-cell touch sensing has separately assigned timings for display and touch units. This timesharing method provides immunity from display noise and consequently better signal-to-noise ratio (SNR) than other out-cell types. In parallel, we have developed a new controller that can support both EMR and capacitive sensing as a one-chip solution, with the capability of maximizing signal levels lowering noise and detecting the frequency precisely when there is pressure on the pen tip. Our in-cell technologies contribute not only a good SNR for EMR pen but also the added benefits for thin design, lightweight panel, compared with conventional LCD techniques.

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Section: Resultsmentioning

confidence: 99%