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Customize 3.5 inch 320*240 Resolution Capacitive Touch Tft Lcd Display Module for 3D Printer

August 16, 2021

Latest company case about Customize 3.5 inch 320*240 Resolution Capacitive Touch Tft Lcd Display Module for 3D Printer

1.Description of CH350QV05A-RT

ChengHao Display model CH350QV05A-RT is a color active matrix thin film transistor (TFT) liquid crystal display

(LCD) that uses amorphous silicon TFT as a switching device. This model is composed of a TFT LCD panel, a driving

IC, Touch Panel ,a back-light and FPC.
This TFT LCD has a 3.5 (Horizontal screen) inch diagonally measured active display area with 320*240 Resolution

and be used for this project is the Resistive touch panel.


The driver used for this project is the HX8238D or compatible and can display 65K/262K colors by R.G.B. signal

input. The driver is mounted on the glass and the interconnection via FPC including components to drive the

display module.

 

In addition, FPC can also be customized according to customer requirements, such as modifying back-light and

FPC structure, interface definition, etc.
RoHS Compliance & Halogen Free.

 

 

 

 

2. CH350QV05A-RT's Parameter

 

 

ITEM STANDARD VALUES UNITS
LCD type 3.5’’TFT --
Dot arrangement 320(RGB)×240 dots
Color filter array RGB vertical stripe --
Display mode TN / Transmission / Normally White --
Viewing Direction 6 o’clock --
Driver IC HX8238D --
Module size 76.9(W)×63.9(H)×4.25(T) mm
Active area 70.08(W)×52.56(H) mm
Dot pitch 0.219(W)×0. 219(H) mm
Interface Digital 24-bit RGB --
Operating temperature -20 ~ +60
Storage temperature -30 ~ +80
Back Light 6 White LED In Serial --
Weight TBD g
 

 

3. Interface Description

 

 

 

 

PIN
NO.
PIN
NAME
DESCRIPTION
1 LEDK Power supply for backlight cathode input terminals.
2 LEDK Power supply for backlight cathode input terminals.
3 LEDA Power supply for backlight anode input terminal.
4 LEDA Power supply for backlight anode input terminal.
5 GND Ground
6 XR Right electrode
7 YD Bottom electrode
8 XL Left electrode
9 YU Top electrode
10 GND Ground
11~13 NC NC
14 /RESET Reset signal input terminal, active at ‘L’.
15 /CS Chip select signal, Active “L”
16 SCL SPI Interface Data Clock
17 SDI SPI Interface Data
18~25 B0~B7 Blue Data Input
26~33 G0~G7 Green Data Input
34~41 R0~R7 Red Data Input
42 HSYNC Horizontal Sync Input
43 VSYNC Vertical Sync Input
44 DOTCLK Dot Data Clock
45~46 NC NC
47 VDD Power input pin.
48 VDD Power input pin.
49~57 NC NC
58 DEN Data Enable Input
59~60 GND Ground

 

4. Backlight Charasterics

Item Symbol MIN TYP MAX UNIT Test Condition
Supply Voltage Vf 17.4 19.8 21.6 V If=20mA
Supply Current If - 20 - mA -
Luminous Intensity
for LCM
- 220 250 - Cd/m2 If=20mA
Uniformity for LCM - 80 - - If=20mA
Life Time - 20000 - - Hr If=20mA
Backlight Color White          

 

 

 

5. Optical Characteristics

 

 


*Note (1) Definition of Contrast Ratio (CR):
The contrast ratio can be calculated by the following expression.
Contrast Ratio (CR) = L63 / L0
L63: Luminance of gray level 63
L 0: Luminance of gray level 0
CR = CR (5)
CR (X) is corresponding to the Contrast Ratio of the point X at Figure in Note (5).
*Note (2) Definition of Response Time (Ton, Toff):

*Note(3) Definition of Viewing Angle

 

*Note (4) Measurement Set-Up:
The LCD module should be stabilized at a given temperature for 20 minutes to
avoid abrupt temperature change during measuring. In order to stabilize the luminance,
the measurement should be executed after lighting Backlight for 20 minutes in a
windless room.

 

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