50.3: Low Power, High Image Quality Color Reflective LCDs Realized by Memory‐in‐Pixel Technology and Optical Optimization Using Newly‐Developed Scattering Layer

Fukunaga, Yoko; Tamaki, Masaya; Mitsui, Masashi; Maeda, Kazuyuki; Kabe, Masaaki; Teranishi, Yasuyuki; Nakanishi, Takayuki; Omori, Hideyuki; Hayashi, Shuji; Takasaki, Naoyuki; Goto, Fumitaka; Higashi, Amane; Harada, Tsutomu; Nakajima, Yoshiki

doi:10.1002/j.2168-0159.2013.tb06309.x

Cited by 19 publications

(14 citation statements)

References 4 publications

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“…To pursue ease of manufacturing, twisted nematic electrically controlled birefringence mode with a single cell gap was used. As shown in our previous paper, we adopted a newly developed scattering layer that has asymmetrical scattering properties and designed the asymmetrical reflective properties to obtain the highest reflectivity when looking perpendicular to the LCD and sacrificing the reflectivity when looking from other angles. The asymmetrical scattering properties also contribute to a paper‐like appearance of the LCD, because its reflectance is not strongly dependent on the mirror reflective angle.…”

Section: Methodsmentioning

confidence: 99%

Reflective full‐color LCD using low‐temperature polysilicon TFTs in low‐frequency driving: Analysis of image persistence and flicker with scientific CMOS camera

et al. 2016

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Image persistence and flicker are major issues for low‐frequency driving of LCDs. Detailed investigation of the mechanisms that produce these phenomena, using image analysis with a scientific CMOS camera, enabled us to reduce it to acceptable levels. We successfully developed a 7.0‐in. WUXGA (1200 × RGBW × 1920) reflective color LCD driven by low‐temperature polysilicon TFTs at 1 Hz.

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Section: Methodsmentioning

confidence: 99%

Reflective full‐color LCD using low‐temperature polysilicon TFTs in low‐frequency driving: Analysis of image persistence and flicker with scientific CMOS camera

et al. 2016

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“…When XGA (768 × 3 × 1024) resolution is applied to a 7.03‐in. screen (182 ppi), our current process limits the display to 64 colors, 2 bits per subpixel, as reported in our previous work …”

Section: Systemmentioning

confidence: 99%

“…In order to pursue excellent reflection properties for the prototype, a newly developed asymmetric scattering layer and the mixed‐mode twisted nematic are used, as shown in the previous work …”

Section: Pixel Structurementioning

confidence: 99%

“…screen (182 ppi), our current process limits the display to 64 colors, 2 bits per subpixel, as reported in our previous work. 8 Figure 3 shows a system block diagram of our display device prototype. The display device consists of a MIP backplane and a display driver.…”

Section: Memory In Pixelmentioning

confidence: 99%

“…In the previous paper, we have shown a newly developed asymmetric scattering layer for enhancing reflectance of the mixed‐mode twisted nematic reflective‐type LCD. For its higher reflectance, the novel reflective LCD has decreased circumstances where auxiliary lightings must be used.…”

Section: Introductionmentioning

confidence: 99%

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A memory‐in‐pixel reflective‐type LCD using newly designed system and pixel structure

et al. 2014

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-A 7.03-in. extended graphics array reflective LCD prototype has been developed by using memory-in-pixel (MIP) technologies with a newly designed system and pixel structure. The MIP system comprising a MIP backplane and a display driver has been optimized to reduce power consumption. The MIP backplane has specific circuits that allow accessing row drivers randomly, and the display driver manages which row should be accessed. Thus, the system is capable of showing a mixture of still and moving images, resulting in low power consumption. A dithering block embedded in the display driver enables to select an appropriate dithering algorithm according to the types of images and the position on the screen. In addition, the novel pixel structure, "three divided patterns", has been designed to improve image quality and to provide visibility in dark environments. The latter is based on a novel approach; interpixel area is used for an aperture to transmit light from the backlight, and the fringe field from adjacent pixel electrodes is used to control LC directions. The feature of the pixel structure is also effective for obtaining equivalent gamma between reflective and transmissive images.

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TFT Array Process Architecture and Manufacturing Process Flow

Kim

2018

Flat Panel Display Manufacturing

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50.3: Low Power, High Image Quality Color Reflective LCDs Realized by Memory‐in‐Pixel Technology and Optical Optimization Using Newly‐Developed Scattering Layer

Cited by 19 publications

References 4 publications

Reflective full‐color LCD using low‐temperature polysilicon TFTs in low‐frequency driving: Analysis of image persistence and flicker with scientific CMOS camera

Reflective full‐color LCD using low‐temperature polysilicon TFTs in low‐frequency driving: Analysis of image persistence and flicker with scientific CMOS camera

A memory‐in‐pixel reflective‐type LCD using newly designed system and pixel structure

TFT Array Process Architecture and Manufacturing Process Flow

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