54.1: A Low‐Power SOG LCD with Integrated DACs and a DC‐DC Converter for Mobile Applications

Abstract

A low‐power 262k‐color SOG (System‐On‐Glass) LCD has been developed for mobile applications. It is integrated with a DC‐DC converter and driver circuits that contain 6‐ bit DACs, and it consumes less than 5 mW in operations with a single voltage power supply of 2.5 V.

43.2: Invited Paper: Low-Power System-on-Glass LCD Technologies

“…To overcome this problem, we developed low-power SOG driver circuit architectures and achieved a low-power (5 mW) SOG-LCD with integrated 6-bit DACs and a DC/DC converter [2][3][4]. This paper focuses on the low-power SOG driver circuit technologies, and also introduces a 510-Kbit SOG-DRAM for frame-memoryintegrated LCDs as 3G SOG-LCD technology.…”

Design and implementation of readout circuit on glass substrate with digital correction for touch‐panel applications

“…Furthermore, the operating voltage and device dimensions should decrease, resulting in low power consumption along with the integration of peripheral functional circuits on the panel. [1][2][3][4] Broadband services will be in great demand as wireless transmission speed increases. As a result, the features of using LTPS technology encourage the further spread of SOP applications.…”

“…When the sensor line is touched by a finger, C_touch is added in parallel to the touched node and the total capacitance on the capacitive sensor line is also changed. In order to discrimi-nate between the touch and non-touch events, by detecting the capacitance change from C_touch, each node on the sensor line is initially pre-charged to 10 V. When the touch event happened, the voltage at the output node Fin (V Fin ) will change to (1) where V pre-charge = 10 V, C total = 100 pF, and C_touch = 0.5-2 pF. Therefore, the voltage level at the output node Fin under a touch event can be derived from 9.8 to 9.95 V with a corresponding C_touch value from 2 to 0.5 pF.…”

62.3: A Non‐Rectangular Heart‐Shaped SOG‐LCD

“…System-On-Glass (SOG) technology in which display driver circuits are composed of polycrystalline silicon thin-film transistors (poly-Si TFTs) has been used to form the display driver circuits together with an array of pixels on a glass substrate [2] [3]. It gives LCDs a fine…”