Contact Person : Tina Fu
Phone Number : +86 755-27806536
WhatsApp : +8615919862398
August 16, 2021
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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| Shenzhen ChengHao Optoelectronic Co., Ltd. |
| 7th floor, building C5, Hengfeng Industrial City, Hangcheng street, Bao'an District, Shenzhen |
| 86-755-27806536 |
| add@chenghaolcm.com |
