JapanDisplayInc


We develop, design, manufacture, and sell "display" where it is necessary for the interface that deliver a lot of information at an instant and deliver it to the global market. We create interactive spaces that go beyond the expected, elevate everyday lives, and move people's hearts. From bases in major cities in Asia, Europe, and the Americas, we build strong customer relationships by developing products that respond to market needs.

MIP reflective color display

Introduction

Memory In Pixel (MIP) function is equipped in the color reflective LCD. These LCD modules are suitable for a wide variety of IoT products and application, including outdoor sports gears, medical & healthcare devices, remote controllers, and portable devices. JDI's Low power consumption technology contributes to long battery drive devices.

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Feature

JDI carries out development relating to not only improvement of display performance with higher resolution and higher picture quality, but also to reflective-type color displays for realization of ultra-low power consumption.

JDI's reflective-type display optimizes its optical design by using a newly-developed scattering layer. At the same time, ultra-low power consumption is achieved when still images are displayed by adopting a memory-in-pixel structure using low temperature poly-silicon technology. This technology supports development of new applications like smart watches and e-readers. /media/uploads/STakayama/yellow_bird-sram1.jpg

Characteristics

  • Brightness Enhancement

One most outstanding characteristic of reflective-type LCD is its readability under strong ambient light. LCD can be read clearly by the reflection of ambient light without backlight unit (see Picture 1). However, in order to increase its application versatility with color display, readability drops after applying color filter above the reflective layer. The total brightness will reduce by around 70%. /media/uploads/STakayama/brightness_enhancement1.jpg To improve brightness, JDI uses optical light control technologies to optimize viewing angle for specific screen sizes. When light goes into LCD, the light control technologies help to efficiently reflect more light, resulting in wider viewing angle. Furthermore, silver material is also used to enhance the reflectivity. JDI uses silver as the reflective material instead of Aluminum because its reflectance is 67% better. /media/uploads/STakayama/optical_light_control.jpg

  • Support models with BL(Back Light) , without BL.

In order to cope with dark situations, MIP also has a model with backlight.

  • Colors

JDI MIP reflective-type color displays bring memory LCD to a colorful world. 8 colors display enable customer to do more design for information demonstration, see Picture 2. With new circuit technology, LCD can be more compact for variety of applications than before. Power consumption is also lower than current solution in the market. Our 1.28”, 2.7”, and 4.4” LCD have market trend’s simple interface which allow easy customer evaluation. In future Eco and IoT world, MIP reflective-type color display is expected to play an important role for its ultra-low power consumption characteristic.

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(Since MIP is expressed by 8 gradations, in the case of images expressed with more gradations than 8 gradations, it is preferable to perform area gradation display by digital filter (error diffusion processing etc.) processing.)

  • Low power consumption.

In JDI MIP reflective-type color display, there’s a SRAM (static random access memory) in each pixel which can store image without continuous signal input. In this case, controller in customer’s system can be in sleep mode or totally off to achieve ultra-low power consumption (around 1-5μA for still image for 2.7” panel). As shown in Figure 1, in comparison with transmissive LCD, to use reflective-type LCD can save 80% of power due to no backlight is needed; Additionally, MIP technology can save 19% more power during displaying still image. If partial screen data updates is needed, end user can choose multiple line update or single line update to refresh display instead of re-writing the whole screen. /media/uploads/STakayama/power_consumption_comparison.jpg

  • Simple interface (SPI with Single Power Supply) .

LCD Panel Interface : https://os.mbed.com/teams/JapanDisplayInc/wiki/SPI_MIP8

Product Lineup

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Specification :  http://www.j-display.com/english/product/reflective.html

Sample Code (Library) : https://os.mbed.com/teams/JapanDisplayInc/code/MIP8F_SPI/

Sample Code (Project) : https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/

Videos

JDI_MIP sample display : https://youtu.be/oNzFiVqFUvo

JDI Frequency Mono mode & partial scan : https://youtu.be/JobE8nZj1RQ (Presented by KOE : http://www.koe.j-display.com/)

JDI Frequency Color mode & partial scan : https://youtu.be/3TExxX_bqDo (Presented by KOE : http://www.koe.j-display.com/)

Sample Board

JDI_MIP Interface Board: (to sale in Mar.2019 ) https://international.switch-science.com/

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in Japan:

International store :

Usage: https://os.mbed.com/teams/JapanDisplayInc/code/MIP8f_FRDM_sample/

Operation manual

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