LCD Pure-X#
With demmel products’ LCD Pure X series, you will no longer have to worry about development effort to set up your display connection. Our expansion boards offer an easy way to integrate our high-end displays into any LVDS capable platform. They were designed to seemlessly communicate with our iLCD Linux Mainboard, but can be used in wide variety of systems. The PCB of our LCD Pure X series comes with all the necessary components for the display control. The connection to your control board is made with a single, specially designed 40-pin flex pcb cable that covers the communcation with the display and the touchpanel and even the power supply.
Further, we offer customized solutions starting from 500pcs. only. The modifications range from adaptions to the coverglass to adding adhesive solutions or include color or logo prints for more brand recognition value.
LVDS Port#
This is the pinning of the LVDS port on the rear of the panel, which on the silkscreen is labeled as “To DPP-LMB -> LVDS” and as “LVDS IN” in our documentation.
LVDS uses differential signaling, which allows it to run on low voltages. Connection to the LVDS in port is made via a 40-pin FFC/FPC cable with 0.5 mm pitch. The FFC/FPC connector on the board is a top-contact model.
Pin |
Pin |
Primary Function Description |
|---|---|---|
1 |
LVDS SPARE |
Spare line currently not connected |
2-4 |
VCC |
3.3V power supply |
5 |
LVDS DISP Reset |
Display reset 1) |
6 |
LVDS DISP Disable |
Display disable 2) |
7 |
GND |
|
8 |
LVDS D0 N |
Differential pair 0 for data transmission to the display |
9 |
LVDS D0 P |
Differential pair 0 for data transmission to the display |
10 |
GND |
|
11 |
LVDS D1 N |
Differential pair 1 for data transmission to the display |
12 |
LVDS D1 P |
Differential pair 1 for data transmission to the display |
13 |
GND |
|
14 |
LVDS D2 N |
Differential pair 2 for data transmission to the display |
15 |
LVDS D2 P |
Differential pair 2 for data transmission to the display |
16 |
GND |
|
17 |
LVDS CLK N |
Differential Pair for clock line transmission to the display |
18 |
LVDS CLK P |
Differential Pair for clock line transmission to the display |
19 |
GND |
|
20 |
LVDS D3 N |
Differential pair 3 for data transmission to the display |
21 |
LVDS D3 P |
Differential pair 3 for data transmission to the display |
22 |
GND |
|
23 |
LCDS PCAP SCL |
I²C interface for PCAP – clock |
24 |
LCDS PCAP SDA |
I²C interface for PCAP – data |
25 |
GND |
|
26 |
LCDS PCAP INT |
I²C interface for PCAP – interrupt |
27 |
LCDS PCAP RES |
I²C Interface for PCAP – reset 3) |
28 |
GND |
|
29 |
SYS SCL |
Backup I²C interface – clock 4) |
30 |
SYS SDA |
Backup I²C interface – data 4) |
31-33 |
LVDS BL GND |
GND pin for 5V supply of backlight, connected to GND. |
34-36 |
LVDS BL HV VCC |
High voltage power supply for backlight 5) |
37 |
LVDS BL PWM |
PWM line for setting the brightness of the display backlight. 6) |
38-40 |
LVDS BL VCC |
5V power supply for backlight 5) |
1) Pull to GND to reset the display. Must be applied on or after power up of VCC for > 50ms, but is not connected/used on all models. Can be left open during normal operation or tied to 3.3V.
2) Pull to GND to enable the display. When left open or tied to 3.3V the display is disabled.
3) Pull to GND to reset the PCAP. Must be applied on or after power up of VCC for > 50ms. Can be left open during normal operation or tied to 3.3V.
4) This I²C bus has no dedicated purpose and may be used for additional devices such as sensors.
5) Depending on the size of the display, it uses either the 5V pin or the high voltage pin for voltages between 7V and 30V in order to minimize current.
6) When left open or tied to GND, backlight is disabled. Can be tied to 3V3 for maximum brightness.