7-2: Transmissive OLED and Reflective LC Hybrid (TR-Hybrid) Display

Abstract

In our newly developed display with low power consumption, circuits for a reflective liquid crystal display (LCD) and an organic light-emitting diode (OLED) display are formed in the same field-effect transistor layer to control these two types of display devices. This display has high visibility in both a bright and a dark environment with use of the reflective LCD and the OLED display, respectively.

46‐4: 513‐ppi Hybrid Display with Stacked Transistors

“…A high-resolution display exhibits two problems: 1) the difficulty in arranging many transistors in one pixel and 2) obtaining a high aperture ratio because of the small pixel size. The hybrid display includes a circuit for an OLED display and a pixel circuit for a reflective LCD in one pixel [1]. Therefore, the area occupied by the transistors needs to be reduced to achieve high resolution.…”

“…The relative reflectance, when the reflectance of a standard diffusing reflector is regarded as 100, is shown in Fig. 8, in comparison with a 292-ppi RGB hybrid display (pervious work [1]). The aperture ratio decreases from 76 in the previous work to 56.7, maintaining the same resolution; however, the reflectance is improved owing to the RGBW structure.…”

“…Recently, we developed a low-power-consumption display, in which a reflective LCD and an OLED display are formed over a single substrate (hybrid display) [1][2][3]. OLED display is employed under low illumination, whereas the reflective LCD is used under high illumination.…”

56‐3: New Process to Fabricate Hybrid Display

“…In SID 2016, we reported a next-generation OS-based hybrid display that can display images by using OLEDs and reflective LCs [27][28][29]. Display modes of the hybrid display are shown in Figure 1.…”

16‐1: Low‐Power Oxide‐Semiconductor Display System

“…Such OS displays reduce power consumption because they can perform idling stop (IDS) display [3,4], in which the image refresh rate is extremely low when the image is not changed; this can be attributed to the good data retention characteristics of pixels including the OS-FETs. Moreover, hybrid displays [5][6][7] of an organic light-emitting diode (OLED) display and a reflective liquid crystal display (RLCD) solve the performance tradeoff dilemma.…”