Jae-Ik Lim

48.4: Development of High-Contrast CRT Based on Nano Pigment Screen Technique

We have developed the NPSCN (Nano Pigment Screen) technique, a new style phosphor screen and successfully applied it to the CRT TVs. The technique significantly improved contrast, color gamut and body color in comparison to the previous CRTs without any additional process or investment cost.

Stretchable Dual-Capacitor Multi-Sensor for Touch-Curvature-Pressure-Strain Sensing

We introduce a new type of multi-functional capacitive sensor that can sense several different external stimuli. It is fabricated only with polydimethylsiloxane (PDMS) films and silver nanowire electrodes by using selective oxygen plasma treatment method without photolithography and etching processes. Differently from the conventional single-capacitor multi-functional sensors, our new multi-functional sensor is composed of two vertically-stacked capacitors (dual-capacitor). The unique dual-capacitor structure can detect the type and strength of external stimuli including curvature, pressure, strain, and touch with clear distinction, and it can also detect the surface-normal directionality of curvature, pressure, and touch. Meanwhile, the conventional single-capacitor sensor has ambiguity in distinguishing curvature and pressure and it can detect only the strength of external stimulus. The type, directionality, and strength of external stimulus can be determined based on the relative capacitance changes of the two stacked capacitors. Additionally, the logical flow reflected on a tree structure with its branches reaching the direction and strength of the corresponding external stimulus unambiguously is devised. This logical flow can be readily implemented in the sensor driving circuit if the dual-capacitor sensor is commercialized actually in the future.

P-134: New Optical Configuration of Transflective LCD for the Low Voltage (2.5V) Driving

We have developed an ultra low voltage driving transflective liquid crystal display without high dielectric liquid crystal material, We used a new LC mode configuration. By adjusting cell gap, retardation, film angle (polarizer, retarder), We have achieved 2.5 voltage driving for LC dynamic movement. and hence, The power consumption for LC Driving (analog power) has been reduced by 50%.

P‐145: New Configuration of Normally Black Transflective ECB LCD with Low Cost

The ECB LC Mode is generally normally white Mode and is used transflective Mode, By applying new configuration of LC, Film such as Polarizer, Retarder, We realized Normally black ECB transflective Mode which one configuration improve reflective property, the other configuration improve transmissive property such as Contrast Ratio. Finally, we acquired over 200:1 contrast Ratio, and 4% reflectance in condition of a diffusing light.