Shenzhen Yetai Optoelectronics Technology Co.,Ltd.
Model No.: 154027S0-XH
Jenis bayaran: T/T
Kristal cair merujuk kepada status zat antara bahan pepejal (kristal) dan cecair. Apabila kristal dengan tahap urutan yang tinggi dalam urutan molekul dicairkan, mereka biasanya berubah menjadi cecair, yang mempunyai kelancaran tetapi tidak ada susunan sama sekali. Walau bagaimanapun, molekul organik berbentuk bar nipis, apabila dicairkan, menjaga susunannya ke arah molekul walaupun mereka kehilangannya dalam kedudukan molekul. Dalam keadaan di mana molekul berada dalam arah yang seragam, mereka juga mempunyai indeks biasan, pemalar dielektrik dan ciri fizikal lain yang serupa dengan kristal, bergantung pada arahnya, walaupun mereka cair. Inilah sebabnya mengapa mereka dipanggil kristal cair. Rajah di bawah menunjukkan struktur 5CB (4-pentyl-4'-Cyanobiphenyl) sebagai contoh molekul kristal cecair.
1. Pengenalan
1.1 Skop permohonan
Spesifikasi ini berlaku untuk modul LCD yang dibekalkan oleh Tian Xian Wei
Technology CO., LTD.
Spesifikasi LCD: Titik 240xRGBx240.
Mengenai spesifikasi asas IC pemandu, rujuk IC (ST7789V2)
buku spesifikasi dan data.
Semua bahan & pemprosesan modul LCD mestilah Bebas plumbum.
1.2 ciri TFT:
Struktur: TFT PANNEL + IC + FPC + BL + CTP;
LCD Jenis IPS
240dot-segmen dan 240 dot-common output;
Warna 65K boleh dipilih oleh perisian;
Lampu belakang LED putih;
Antara muka MCU 8bit
1. 3 Aplikasi:
2. Spesifikasi umum LCM
|
ITEM |
Sandard value |
Unit |
|
LCD Type |
Normally Black |
-- |
|
Drive element |
TFT active matrix |
-- |
|
Number of pixels |
240*3RGB(H)X240(V) |
Dots |
|
Pixel arrangement |
RGB stripe |
-- |
|
Pixel Pitch (W*H) |
0.1155(W) × 0.1155(H) |
mm |
|
Active area |
27.72(W) ×27.72 (H) |
mm |
|
Viewing direction |
ALL O’CLOCK |
- |
|
TFT Driver IC |
ST7789V2 |
|
|
TFT interface |
8bit MCU interface |
- |
|
Approx. Weight |
TBD |
g |
|
LCM Size(W*H*T) |
31.52(W) ×33.72(H) ×1.33(T) |
mm |
|
LCM+CTP Size(W*H*T) |
38.12(W) ×38.12(H) ×2.46T) |
mm |
|
Touch structure |
G+G |
|
|
Touch Driver IC |
FT6236 |
- |
|
Touch Interface |
I2C |
|
3 .A bsolute M aximum R Ating
|
Characteristics |
Symbol |
Min. |
Max. |
Unit |
|
LCM Operating Temperature |
TOPR |
-20 |
+60 |
°C |
|
LCM Storage Temperature |
TSTG |
-30 |
+70 |
°C |
|
TP Operating Temperature & Humidity(20% ~ 90%RH) |
TOPR |
-20 |
+60 |
°C |
|
TP SStorage Temperature & Humidity(20% ~ 90%RH) |
TSTG |
-30 |
+70 |
°C |
|
Humidity |
RH |
- |
90 |
% |
4 .E haracteristics C lectrical
4 . 1 TFT Haracteristics DC C
|
Characteristics |
Symbol |
Min. |
Typ. |
Max. |
Unit |
|
Supply Voltage for I/O |
VDDIO |
-- |
-- |
-- |
V |
|
Supply Voltage for(DC/DC) |
VDD |
2.5 |
2.8 |
3.6 |
V |
|
Supply Voltage for(DC/DC) |
AVDD |
|
|
|
V |
|
Supply Voltage for(DC/DC) |
AVEE |
|
|
|
V |
4 . 2 Karakteristik Unit Lampu Belakang
Sistem lampu belakang adalah jenis pencahayaan tepi dengan 3 LED putih. Ciri-ciri lampu belakang ditunjukkan dalam jadual berikut.
|
Characteristics |
Symbol |
Min. |
Type |
Max. |
Unit |
Notes |
|
Forward Voltage |
VF |
2.8 |
-- |
3.2 |
V |
- |
|
Forward current |
IF |
-- |
60 |
- |
mA |
- |
|
Luminance(With LCD) |
Lv |
|
TBD |
-- |
cd/m2 |
- |
|
LED life time |
N/A |
---- |
30,000 |
-- |
Hr |
Note 1 |
Catatan:
(1) "Waktu hidup LED" didefinisikan sebagai kecerahan modul menurun hingga 50% dari kecerahan asli pada I L = 20mA / LED. Masa hidup LED dapat dikurangkan jika operasi I L lebih besar dari 25mA / LED.
Gambarajah litar lampu latar ditunjukkan di bawah:
5 . Penerangan Fungsi Modul
|
Pin No. |
Symbol |
LCM Description |
|
1 |
LEDA |
BACKLIGHT + |
|
2 |
LEDK |
BACKLIGHT- |
|
3 |
GND |
System Ground |
|
4 |
VDD |
POWER SUPPLY 2.4V ~ 3.3V |
|
5 |
VDD |
POWER SUPPLY 2.4V ~ 3.3V |
|
6 |
GND |
System Ground |
|
7-14 |
DB7-DB0 |
MCU parallel interface data bus |
|
15 |
RD |
Read enable in 8080 MCU parallel interface. |
|
16 |
WR |
Write enable in MCU parallel interface |
|
17 |
NC |
NC |
|
18 |
CS |
Chip selection pin |
|
19 |
RS |
Display data/command selection pin |
|
20 |
RESET |
Hardware reset |
|
Pin No. |
Symbol |
CTP Description |
|
1 |
GND |
System Ground |
|
2 |
CTP_VDD |
CTP_Power Supply (2.8V) |
|
3 |
CTP_SCL |
CTP_Clock Singnal (2.8V) |
|
4 |
CTP_SDA |
CTP_Data Singnal (2.8V) |
|
5 |
CTP_RST |
CTP _RESET PIN (2.8V) |
|
6 |
CTP_INT |
CTP_STOP Singnal (2.8V) |
6 . Ciri-ciri Masa
7 . Ciri-ciri Optik
8 . R eliability Item Ujian
|
No. |
Test Item |
Test Condition |
Notes |
|
1 |
High Temp. Storage |
+70°C / 96H |
1. Functional test isOK. Missing Segment,short, unclear segment non-display,display abnormally and liquid crystal leakare un-allowed. 2. No low temperature bubbles,end seal loose andfall, frame rainbow.
|
|
2 |
Low Temp. Storage |
-30°C / 96H |
|
|
3 |
High Tempe. Operating |
+60°C / 96H |
|
|
4 |
Low Tempe. Operating |
-20°C / 96H |
|
|
5 |
High Temperature /Humidity storage |
50°C x 90%RH /96H |
|
|
6 |
Thermal and cold shock |
Static state， -20℃（30min） ~60℃ （30min），50 cycles |
9. P acking Menghubungi ---- TBD
- TAMAT -
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