Panasonic TH-42LF20E 用户手册

4

5

While raising heat dissipation efficiency, the 

unique Panasonic fanless design resists dust 

entry and lowers operating noise. Dust particles 

are not sucked inside, so the display can be 

installed just about anywhere. 

A simple design with a slim bezel of approximately 18 mm and thickness of only

101 mm facilitates signage applications by enabling installation just about

anywhere. In fact, with the thinnest part measuring only 52 mm, the display looks

even slimmer than it is. This prevents it from appearing large and oppressive when

suspended from the ceiling. The slim bezel also enhances this thin appearance

and improves image visibility.

A Slim 101 mm Panel Thickness and 18 mm Bezel

This rugged liquid crystal 

display panel strongly resists 

afterimages and soiling to 

provide the long-time display 

durability that is essential for 

signage use.

Tough Panel for Signage Use

The chessboard pattern slightly remains

Image sticking hardly ever occurs

Field claims about image sticking hardly ever occur with tough panels.

10-watt (5w + 5w) speakers are built-in to the 

left and right sides of the rear panel. This 

eliminates the need to attach external speakers 

when sound is required, 

for quick and easy 

installation.

In order to lower power consumption, a sensor detects the 

ambient lighting and automatically adjusts the backlight 

brightness to match the viewing environment. Power consump-

tion can also be reduced by lowering the screen brightness.

ECO Mode

|Power Management: 

Power is automatically turned on or off in 

response to a sync signal from the equipment connected to the 
built-in PC* input terminal.

|Auto Power Off: 

When you’re using a device connected to the 

terminals, the display panel goes into standby mode after about 
10 minutes if no sync signal is received.

|Standby Power Save Mode: 

Reduces power consumption when 

on standby.

* DPMS compliant

Energy-Saving

The screen saver reduces the possibility of afterimages or image 

retention that can occur when displaying still images with 

constant, unchanging brightness for long periods of time. The 

Auto Power Off setting can also be set to automatically turn the 

power off when the screen saver operation ends.

Screen Saver

When the power plug has been removed and re-inserted, or when 

the power has temporarily gone off due a power outage, the 

display can be set to turn its own power back on once the power 

supply has been restored.

Power Restore Mode

For video walls and other multi-unit applications, this function 

automatically shifts the power-on time slightly for each display 

unit in the system, so there's less load on the power supply.

Power-On Delay Function

The 1:1 Pixel mode maps the 1920 × 1080 video content to full-HD 

panel pixels to display 100% of the original content. By skipping 

the scaling process, this mode is able to produce high-definition 

images in their original, 1:1 pixel form.

* Compatible signal format: 1,125/50i, 60i, 24sF, 24p, 25p, 30p, 50p, 60p, 1,250/50i

1:1 Pixel Mode

You can prevent operating errors in public places by making 

tamper-resistant settings in advance. 

|Maximum Volume Level: 

Sets the maximum sound volume. 

|Button Lock: 

Restricts the button operations for the display.

|Remote User Level: 

Restricts the key operations for the remote 

control.

Tamper-Resistant Settings

The status of the display, such as the power supply, input signal, 

display temperature and accumulated hours of use, can be 

remotely monitored via an RS-232C interface. This enables a 

quicker response to problems when operating systems for 

advertising purposes or information display.

Remote System Monitoring

Built-in Speakers

Dust-Resistant, Fanless Design

Image Sticking

Clear

Static Chessboard Pattern

Example

Backlight

Liquid crystal

molecules

Liquid crystal molecules

Backlight

The IPS panel has a wide 

viewing angle, so colours don’t 

change when the image is 

viewed from right or left angles. 

Information can be accurately 

relayed to groups of people in 

large areas, like public spaces.

The display can be installed either horizontally or vertically to match 

the content and installation location without being affected by 

“Mura” (unevenness). This is because the display has relatively 

uniform pressure distribution as compared to a TV panel, which 

results in far better stability. Regardless of the installation direction, 

the lamp life stays the same since a constant operating temperature 

is maintained.

Wide Viewing Angle for Sharper Images

Flexible, Vertical Installation

Simply press the Auto Setup key on the remote control to position 

the picture. This function automatically corrects the horizontal 

and vertical picture positions, the Clock Phase, and the Dot Clock 

when an RGB signal is input. The adjustment results in optimal 

standard values for horizontal and vertical picture sizes.

Automatic Picture Positioning

* When digital RGB signal input, Dot Clock and Clock Phase cannot be made.

The pixel is separated. 

The viewing angle dependency is eased.

The pixel is not separated. 

It is fundamentally a wide viewing angle.

•The backlight intensity 

is controlled by the 
angle of the liquid 
crystal molecules.

•Changes occur in 

brightness and 
colours depending on 
the viewing angle.

•The backlight intensity is 

controlled by laterally 
rotating the horizontal 
liquid crystal molecules.

•Very little change occurs 

in brightness and colours 
depending on the viewing 
angle.

The Multi-Display function enlarges images up to five times their 

original size, both vertically and horizontally. It enlarges images 

by the same zoom ratio in both vertical and horizontal directions, 

such as 2×2, 3×3, 4×4 and 5×5, or by different ratios in order to 

effectively use vertically or horizontally elongated spaces. LCD 

display versatility can be further enhanced by freely selecting the 

zoom ratio to match the installation space.

Images can be enlarged in 24 different ways

Multi-Screen System Dynamically
Displays Images in Large Spaces

* Some degradation occurs when images are enlarged.

* Provide an appropriate air-conditioned environment because the ambient 
   temperature varies depending on the installation condition and location.

When this mode is turned off, a full-screen image of the display 

panel, including edges (the entire width of the frame), is displayed. 

This is especially suitable for displaying text information, since no 

words are hidden by the frame.

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

Watches

c

c

c

c

c

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

s

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

c

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

t

 

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

a

t

t

t

t

t

t

t

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

h

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

a

t

t

t

t

e

e

e

e

e

W

W

W

W

W

W

c

c

c

c

W

W

W

W

W

s

s

s

s

s

s

s

s

s

s

s

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

h

h

h

h

h

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

e

s

s

s

s

s

s

s

s

s

s

s

s

s

Wat  ches

On

Off

Thickest part is 101 mm.

An ordinary LCD design has 
a uniform cabinet depth.

In this stylish design, the 
thinnest part is only 52 mm.

Front

Front

101 mm

52 mm

Mura (unevenness) 
hardly ever appears in 
Portrait mode.

Mura(unevenness)

Mura (unevenness) 
may appear in 
Portrait mode.