High Transmittance 6.25 cm (2.5-type) Transmissive Color LCD Panels

ACX307AK

ACX308AK

The 2.5-type color LCD panel is widely used as the monitor

in digital video cameras.

Sony has already released the 200K-dot ACX300CK high-

resolution low-temperature polycrystalline silicon TFT LCD.

Now, Sony is expanding its product line by releasing the

120K-dot ACX307AK and the 60K-dot ACX308AK LCD

panels, which provide identical functionality and have the

same external dimensions as the ACX300CK.

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High transmittance achieved by using

low-temperature polycrystalline silicon

TFT technology.

ACX307AK: 9.0 %

ACX308AK: 10.5 %

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Low power consumption: 50 mW (When

a 12 V power supply is used)

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Analog full color display

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Wide-screen display function

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Up/down and/or right/left inversion

functions

By releasing the new ACX307AK and

the ACX308AK products in addition to

the previously released 200K-dot high-

resolution ACX300CK, Sony now

provides a product line of three 2.5-type

color LCD panels for AV applications

that are compatible in size and shape but

offer differing numbers of active

dots. This allows our customers to

expand their end-product lines while

using only low-temperature polycrystal-

line silicon LCD panels, and increases

flexibility in end product design.

Furthermore, the panel external size can

also be matched to that of amorphous

silicon LCD panels, thus allowing these

products to flexible respond to needs for

interchangeability.

High Optical

Transmittance Achieved

As a result of optimal pixel design in

the context of Sony’s unique low-

temperature polycrystalline silicon TFT

technology, the ACX307AK and the

ACX308AK achieve the high aperture

ratios of 73% and 81%, respectively.

Additionally, Sony has adopted a new

pixel structure that significantly

increases the optical transmittance as

compared to conventional amorphous

silicon LCD panels of which the same

number of pixels. In particular, the

ACX307AK achieves 9.0% and the

ACX308AK achieves 10.5%. This

means that these are “even brighter”

LCD panels. (See table 1.)

Extensive Functionality

and Improved Ease of Use

In addition to the up/down and/or right/

left inversion and wide display functions

provided by conventional products,

Sony has developed and adopted volt-

age step-up power supply and negative

voltage generation circuits to reduce the

external power supply and to improve

the ease of use of these products. (See

figure 1.) Sony is also planning to

develop a new single chip IC that inte-

grates both timing generator and control

functions on the same chip to make

drive circuit design far simpler. (See

figure 2.)

VOICE

Although up to now we have

focused

on

high-resolution

devices in our low-temperature

polycrystalline silicon LCDs, in our

current project, we developed

popular devices, the ACX307AK

and the ACX308AK. These devices

make superlative low-temperature

polycrystalline silicon LCD panels

available for a wide range of prod-

ucts, from popular models to high-

class models.