Now we present you a guideline to select a LCDs to meet your requirements in
many aspect, such as cost, performance, and utility, etc, hope it can help you
have a good understanding on the characteristics and property of a LCDs.

Here we categorize LCDs from different prospective of application as
followings:

1.Table 1

Display typeReflectiveTransmissiveTransflective
Application
location
Bright
circumstance
as always
Dim or dusky
circumstance
Sometime in a bright circumstance, and
sometime in a dusky circumstance
Contrast
ratio
Very goodVery Good with backlitGood in bright circumstance, good in
dusky circumstance if with a backlit
Power
consumption
smallhighAverage
backlitNo neednecessaryNecessary in dusky circumstance
Cost factorlowerlowerHigher (expensive polarizer )

2. Table 2

Display modenegativepositive
characterWhite character in
black background
Black character in
white background
backlitnecessaryDepend upon the operation
circumstance (transflective
type)
costhigherlower
contrastgoodbetter

3.Table 3

OperationalmodedutyTNHTN180 twist STN220 twist STN240 twist STN
1/1-1/8
1/8-1/16
1/16-1/64
1/64-1/240
1/240-1/480

Note:

1). For a good contrast, the T-V curve should be steeper enough, as the duty increase,
a steeper T-V curve is required. From TN to 240 twist STN, the steepness of T-V curve
gets steeper and steeper.

2) From TN to 240 twist STN, the response time become slower and slower, but the
contrast gets better and better, and view cone gets wider and wider if the duty is
determined, but the cost of LCD gets higher and higher as well.

4. Table 4

Correlation6 o’clock12 o’clock9 o’clock3 o’clockothers
View form
up
View from
down
View from
left
View from
right
View from
other
direction

Note:

Hereby inform you the most used term of view angle in LCD sector, hope can benefit
your communication during your business contact.

Pls fill up the form for your business contact based the knowledge above.

Sample order requirement form

1)      Display mode

 a. Positive                                          b. Negative

2)      Display type

 a. Reflective              b. Transmissive              c. Transflective

3)  Operational mode

 a. TN  b. HTN   c. 180 twist STN  d. 220 twist STN  e. 240 twist STN

4)      Display mode( here only applicable for STN)

 a. yellow and green mode  b. blue mode  c. gray mode  e. FSTN mode

5)      Driving condition

Duty:     Bias:     Frequency:         Vop:

6)      Viewing angle

a. 6 o’clock   b. 12 o’clock   c. 9 o’clock   d. 3 o’clock   e. others

7)      Operation temperature Range

a.       Normal temperature ( 0 C————-60C)

b.       Wide temperature  (-20C————70C)

c.       Super wider temperature( -30C——80C)

8)      Connection method

a. Pin        b. Elastic rubber      c. Heal seal paper

9)      LCD thickness

a. 1.1×2 mm   b. 0.7X2 mm   c. 0.55×2 mm  d. 0.4×2 mm

10)   Colour

a. Monochrome    b. Printing colour       c. Multi-colour( CIE mixing colour)

11)   LCM

a. COB       b. TAB        c. COG       d. COF

After you fill out this form, we can design a LCD or LCM perfectly meet your all
kinds of requirement, pls take into consideration of cost, performance, and utility
as an integral consideration.

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