ACX706AKM

Portrait-type 8.9 cm (3.5-type) QVGA Reflective Color LCD Module with Built-in Touch Panel and 4-bit D/A Converter ACX706AKM T o provide color display for PDAs and other portable information terminals, Sony has now developed the ACX706AKM 8.9 cm (3.5-type) portrait-type QVGA color LCD module based on low-temperature polycrystalline silicon reflective LCD technology. This new product adopts a full module form that consists of a portraittype LCD panel with a built-in 4-bit D/A converter, a newly-developed thin high-efficiency LED front light, and a touch panel optimized for use with reflective LCD panels. The result is a high-brightness, high image quality, low-power (65 mW) LCD module. Additionally, Sony has integrated the controller and driver functions that have conventionally been implemented with two chips in a single chip in the newly-developed CXD3513GG for simplification of the total system. QVGA reflective color LCD module 240 RGB 320 vertical stripe arrangement TFT panel with built-in 4-bit D/A converter Thin high-efficiency new LED front light High transmittance touch panel Low power consumption: 65 mW (with the front light off) LCD Full Module Form Includes Touch Panel The newly-developed ACX706AKM is Sony’s first full module form, and as such includes an LCD panel, a front light, and a touch panel. By adopting the full module form, Sony was able to optimize the optical design of the touch panel, the front light, and the high reflection ratio panel that is based on the RMP (random multi-profile) structure and an advanced BDM design retardation film. This also allowed optimal matching of the polarizers. As a result, this product achieves, even with the touch panel included, a high contrast ratio (12:1 typical) and a high reflection ratio (24% typical). An anti- reflective coating applied to the touch panel allows this device to be used outdoors. Low-Power Panel and Newly-Developed Single Chip IC The ACX706AKM panel takes advantage of Sony ’ s unique circuit and low-temperature polycrystalline silicon TFT technologies developed in previous 2.7-type and 3.8-type panels, and achieves high reliability, high quality, and low power (the panel itself consumes 20 mW). Furthermore, Sony has integrated the controller and driver functions that have conventionally been implemented with two chips in a single chip in the newly-developed CXD3513GG. The integration of these functions on a single chip increases the degrees of freedom available to the PWB layout designer, and achieves the low power consumption of 65 mW (with the front light off) when the panel is actually driven. Following the development of 2.7-type and 3.8-type panels, Sony has now added the newly-developed ACX706AKM 3.5-type portrait-type LCD panel to its product line of reflective LCD products to respond to a wide range of needs in the portable information terminal area. Thin High-Efficiency Newly-Developed LED Front Light The ACX706AKM adopts a newlydeveloped ultrasmall white LED, and features an optimized optical design that allows it to achieve a brightness of 5 cd/m 2 (typical) at a power consumption of 105 mW (typical). Furthermore, in addition to the LED front light featuring a rapid turn-on time, it also features superlative brightness stability at low temperatures. Thus this device supports use in a wide range of operating environments. V O I C E While this is our third reflective display module, it is no way inferior to either of the others. I hope you will consider the ACX7 06AK M 3 .5-typ e LCD, which is optimal for portable information terminals. I’m sure that, once you see it, you will be able to image a wide range of applications for this module. Table 1 ACX706AKM Basic Specifications HST level shifter HST1/2 HCK1/2 OE level shifter Item Module structure HSR with L/S (60 stages RGB RGB) 2) 4 bits) Preliminary specification LCD + F/L + T/P 53.28 mm (W) 71.04 mm (H) : 8.9 cm diagonal (3.5-type) 3:4 QVGA [240 (H) RGB 230.4K dots 320 (V)] L/S Screen size Aspect ratio Number of effective dots Contrast ratio Reflection ratio PAD (90 pins) data1/xdata1 (RGB 4 bits) OE1 Sampling & latch (120 L/S OE2 VST level shifter VST ENB VCK ENB level shifter 4-bit DAC (120 L/S L/S Display area 240 RGB 320 12:1 Typ. (F/L off) 7:1 Typ. (F/L on) Typ. 24 % Four bits for each of RGB (4096 colors) –6.5 V, +9 V 65 mW Typ. (F/L off) 170 mW Typ. (F/L on) (at 25 C) 66.2 mm (W) 88.0 mm (H) 6.0 mm (t) –10 to +60 C –20 to +70 C Number of colors Supply voltage Power consumption/ brightness Module dimensions OE1 OE2 Reference voltage 9 OE level shifter 4-bit DAC (120 RGB) RGB 4 bits) 2) Operating temperature Storage temperature OE2 OE1 L/S Sampling & latch (120 data2/xdata2 (RGB 4 bits) HCK1/2 HST1/2 L/S HSR with L/S (60 stages HST level shifter Figure 1 ACX706AKM Block Diagram +3.3 V DD converter +5.0 V DD converter +9.0 V –6.5 V +9.0 V –6.5 V Power control +3.3 V+5.0 V Data 4 bits H driver 48 18 9 Data in (RGB 4 bits) Hsync Vsync (Data Enb) MCK Power control LED control 12 RGB 4 Control pulse LCD I/F driver IC (CXD3513GG) Vref Poly-Si TFT LCD 240 (H) RGB 320 (V) VCOM H driver Front light (LED) Figure 2 ACX706AKM System Block Diagram