Product Parameters

Name: 4.0-inch on-cell LCD display
Model: LHCM40
Pixel Quantity: 640 (RGB) X 1280
Display Area: 45.31 (W) X 90.88 (H) mm
Overall Dimensions: 47.73 (W) X 97.55 (H) * 2.46 (T) mm
Driver IC: ST7703
Viewing Angle: 85/85/85/85
Recommended Angle: Full viewing angle
Display Colors:
Response Time: ms
Signal Interface: MIPI
Brightness: 300 cd/㎡ (customizable)
Operating Environment: Operating: -20~70°C; Storage: -30~80°C
Contrast Ratio: (Typ.) (TM)
Drive Voltage: 2.8~3.3V (Max.) (VCC/VGH/VGL)

B: Product Picture

C: Drawing &Pin definition

D: Oled Product Knowledge

OLED Advantages:

OLED sets are lighter and thinner than LCDs , high contrast, high color saturation, lower consumption

OLED Disadvantages

AMOLED is extremely expensive than LCD and TFT, lifetime is shorter than LCD and TFT


E: Company Information

Huaxin Advantage:
1. factory base located at inland city which has cost effective
2. most advanced new equipment which can keep quality stable
3. most processes using fully automatic equipment which has effeciency and stable quality
4. professional engineers and production leaders who works in lcd field for more than 20 years
5. self design for customized product

our certificates
1.ISO14001/
2.ISO9001/IATF16949
3.SGS of LCD module

• Huaxin Technology (Enshi)Co.,LTD
• Hubei.Enshi
• Date of foundation:2009
• high technology enterprise mainly work on research and development, producing and sells LCD,LCM,TFT,backlight,OLED
• LCD includes: VA,TN, HTN, STN, FSTN, CSTN and other series
• LCM includes: COB,TBA, COG,TP,LED backlight and other series
• register capital:twenty million
• current staff:500+
• RD accounts for 10%
• QC accounts for 15%

F: Production Capacity

G: Product Application

1.safety box &instrument

2.lock&smart home

3.transmitter&watch

4.watch&adio

5.collimator&navigator

H: AMOLED Display Characteristics

1.Self-E missive Pixels:

2.Contrast Ratio:

3.Color Accuracy and Vibrancy:

4.Viewing Angles:

5.Power Efficiency:

6.Thinness and Flexibility:

7.Response Time:

I:How does the power efficiency of AMOLED displays compare to other display technologies?

1.Power Consumption:

• AMOLED displays consume power on a per-pixel basis, meaning that pixels that display black or dark content consume very little power, while pixels displaying bright or white content consume more power.
• LCD and LED displays, on the other hand, require a constant backlight that consumes power regardless of the displayed content.

2.Content Dependency:

• AMOLED displays are more power-efficient for content with a lot of dark or black areas, as the individual pixels can be turned off to save power.
• LCD and LED displays consume a relatively constant amount of power regardless of the displayed content, as the backlight remains active.

3.Brightness Control:

• AMOLED displays can dynamically adjust the brightness of individual pixels, allowing for better power efficiency in low-brightness scenarios.
• LCD and LED displays typically have a fixed backlight brightness, which can result in higher power consumption even when the display content does not require maximum brightness

4.Display Size

• AMOLED displays tend to be more power-efficient for smaller display sizes, as the power consumption scales with the number of pixels.
• Larger LCD and LED displays may require more power-hungry backlights, potentially reducing their power efficiency compared to AMOLED displays of the same size.