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Start Over Author "Tanaka, Kohei" Journal sid symposium digest of technical papers
16 results on '"Tanaka, Kohei"'

1. P‐62: Fast Response LCD under Low Temperature Environments Using In‐cell Heater Wires.

Author

Goto, Yuto, Yamamoto, Kaoru, Nakano, Fumiki, Tanaka, Kohei, Takai, Masayoshi, Hosokawa, Mari, Ito, Kazuatsu, Furukawa, Hiroaki, Hara, Takeshi, Kawahira, Yuichi, and Shimoshikiryoh, Fumikazu

Subjects
LOW temperatures, HEATING, TRANSISTORS, LIQUID crystal displays
Abstract

One of the challenges inherent in automotive LCD relates to the response characteristics displayed in low‐temperature environments. In this study, we devised a panel by incorporating heater wires into the Thin‐Film Transistor (TFT) substrate of the LCD, which was optimized through thermal simulations. Additionally, we validated the enhanced response time in low‐temperature environments by utilizing the optimized heater wires within the LCD cell for automotive applications. [ABSTRACT FROM AUTHOR]

Published
2024
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4. 24‐4: Distinguished Paper: High Refresh Rate and Low Power Consumption AMOLED Panel Using Top‐gate n‐Oxide and p‐LTPS TFTs

Author

Yonebayashi, Ryo, primary, Tanaka, Kohei, additional, Okada, Kuniaki, additional, Yamamoto, Kaoru, additional, Yamamoto, Keiichi, additional, Uchida, Seiichi, additional, Aoki, Tomohisa, additional, Takeda, Yujiro, additional, Furukawa, Hiroaki, additional, Ito, Kazuatsu, additional, Katoh, Hiromi, additional, and Nakamura, Wataru, additional

Published
2020
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5. 20‐1: Distinguished Paper:Advanced Hybrid Process with Back Contact IGZO‐TFT

Author

Honjo, Masatomo, Takeda, Yujiro, Aman, Mehadi, Ito, Kazuatsu, Tanaka, Kohei, Matsukizono, Hiroshi, and Nakamura, Wataru

Abstract

We propose the new structure of hybrid backplane technology with IGZO‐TFT and LTPS. In this structure, IGZO is directly connected with inter metal to reduce the number of layers. The uniformity of contact resistance between IGZO and metal was less than 20n at G4.5 which is enough for using signal bass line. The characteristics of IGZO‐TFT uniformity and reliability were good enough for mass‐production. The panel with the new hybrid structure backplane has been adopted into practical use as the smartphone with 6.6 inches flexible OLED panel. We believe that the proposed structure would be useful for the mass production of high performance OLED display at low cost production.

Published
2022
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8. 7‐1: Distinguished Paper:Reliability Improvement of IGZO‐TFT in Hybrid Process with LTPS

Author

Aman, Mehadi, Takeda, Yujiro, Ito, Kazuatsu, Yamamoto, Kaoru, Tanaka, Kohei, Matsukizono, Hiroshi, Nakamura, Wataru, and Makita, Naoki

Abstract

An AMOLED panel using hybrid backplane technology based on p‐type LTPS and n‐type oxide has been successfully manufactured. New pixel and Gate‐on‐Array (GOA) circuits were designed and fabricated using this technology. CMOS operation of the GOA is realized by utilizing both IGZO and p‐LTPS. The hybrid backplane AMOLED panel can operate between 1 Hz and 120 Hz, which enables both high refresh rate and low standby power display applications. Furthermore, the AMOLED panel lifetime has markedly enhanced by improving IGZO TFT's uniformity and reliability.

Published
2021
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10. 24‐4: Distinguished Paper:High Refresh Rate and Low Power Consumption AMOLED Panel Using Top‐gate n‐Oxide and p‐LTPS TFTs

Author

Yonebayashi, Ryo, Tanaka, Kohei, Okada, Kuniaki, Yamamoto, Kaoru, Yamamoto, Keiichi, Uchida, Seiichi, Aoki, Tomohisa, Takeda, Yujiro, Furukawa, Hiroaki, Ito, Kazuatsu, Katoh, Hiromi, and Nakamura, Wataru

Abstract

A Pixel Circuit and a Gate Driver on Array for light‐emitting display are presented. By simultaneously utilizing Top‐Gate n‐type Oxide and p‐type LTPS TFTs, the circuits provide high refresh rate and low power consumption. An AMOLED panel with proposed circuits is fabricated and driving at various refresh rate ranging from 1Hz to 120Hz could be achieved.

Published
2020
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11. 59.1: Invited Paper: Flexible Flat‐Panel Display Designs with Gate Driver Circuits Integrated within the Pixel Area

Author

Yoshida, Hidefumi, primary, Tanaka, Kohei, additional, Noma, Takeshi, additional, Nishiyama, Takayuki, additional, Yonebayashi, Ryo, additional, Nasu, Yasuhiro, additional, Ishida, Takeshi, additional, Murata, Mitsuhiro, additional, Nakanishi, Yohei, additional, Kadowaki, Shinya, additional, Watanabe, Hisashi, additional, Tomotoshi, Takuma, additional, Yuki, Ryuzo, additional, and Kanehiro, Masayuki, additional

Published
2015
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13. 69‐3: Distinguished Paper:Development of Middle Size Full In‐Cell LCD Module for PC with IGZO

Author

Hata, Masayuki, Tanaka, Kohei, Watanabe, Takuya, Noma, Mikihiro, Tagawa, Akira, Yoshida, Keisuke, Yamamoto, Kaoru, Nagata, Kosuke, Miyazaki, Shinichi, and Kitagawa, Daiji

Abstract

We developed the world's first middle size full in‐cell LCD for PC with IGZO technology. We evaluated a new Gate driver In Panel (GIP) structure with latch circuit and confirmed that there were no problems with display and touch panel (TP) performance. Furthermore, we did a feasibility study of higher display resolutions and larger size panels, which showed future possibilities.

Published
2018
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