Series production launched of 7.5 inch LCD screen with LED backlight solution

Kyocera LCD

29 November 2007

Kyoto / Neuss – Kyocera launched the series production of a 7.5 inch LCD (Liquid Crystal Display) with LED (Light Emitting Diods) backlight solution, in both color passive and active matrix. The VGA module is mechanically compatible with Kyocera’s exiting 7.5 inch LC displays with CCFL (Cold Cathod Fluorescent Lamps) backlight solutions. This makes it easy for the customers to upgrade or differentiate their products. Kyocera LCDs with LED backlights are suitable for portable devices and measuring instruments.

Kyocera's LCDs with LED backlighting are mercury-free and offer a significant benefit to the environment. Environmentally friendly LCDs for industrial applications play a major role in Kyocera's liquid crystal business. By integrating the company's technical expertise in LCDs with the excellent performance properties of LEDs, Kyocera developed and commercialized LCDs with LED backlighting, which are now available in sizes ranging from 4.7 inch to 7.5 inch – either with or without a constant current circuit to drive the LED backlight.

The LED backlight solution does not only meet Kyocera’s claim for ecological products but also contributes to an increased reliability: The on-chip LEDs offer improved vibration and shock resistance over CCFLs (Cold Cathode Fluorescent Lamp), which incorporate glass tubes.

The LED backlight solution of the 7.5 inch LCD allows luminance to be controlled.  A "low luminance" mode is possible for operating environments with low ambient lighting, which reduces power consumption and extend battery life.

LCDs with LED backlighting require no inverters, which are essential in CCFLs.  No high-voltage power source is required, making it easier to obtain safety standard certification.  In addition, since there is no interfere, the need for EMI (electromagnetic influence) suppression is greatly reduced or eliminated.

CCFLs require considerable time to turn "on" in low temperature conditions.  LEDs offer much faster starting up performance in these environments.

7.5 inch Active Matrix Color LCD Module: TCG075VGLAE-G00

Item

Specifications

Unit

Dot Format

(640 x RGB) x 480

dot

Dot Pitch

0.079 x 0.237

mm

Outline Dimensions

184 x 139.8 x 12.7

mm

Mass

370

g

Contrast Ratio

450:1

-

Brightness

280

cd/ m2

Response Time

20

ms

Viewing Angle (V / H)

120 / 140 (CR>5)

deg.

Power Consumption

957 (LCD)

mW

2.31 (backlight)

W

Backlight

Low Power LED

-

7.5 inch Passive Matrix Color LCD Module: KCG075VGLBJ-G00

Item

Specifications

Unit

Dot Format

(640 x RGB) x 480

dot

Dot Pitch

0.079 x 0.237

mm

Outline Dimensions

184 x 139.8 x 12.7

mm

Mass

(280)

g

Contrast Ratio

30:1

-

Brightness

150 (IF=25mA)

cd/ m2

Response Time

550

ms

Viewing Angle (V / H)

60 / 80 (CR≥2)

deg.

Power Consumption

280 (VDD=3. 3V)

310 (VDD=5. 0V) (LCD)

mW

2.31 (backlight) (IF=25mA)

W

Backlight

Low Power LED

-

Duty

1/480

-

 



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