Notifications
Clear all
Topic starter
Hi everyone!
I starting my first project to recycling my old laptop in an (if i can! :D) "wifi touchscreen battery included portable monitor", using the screen and the battery of my old touchscreen laptop (asus S400CA).
I struggle to found a control board compliance with touchscreen ability (best offering usb-c, hdmi, dp connector and more)
For now I just founded hdmi control board and on my search (doesn't seems to be touchscreen!), and speaking with technical service of one provider, they say that my screen model is not a touchscreen screen (as indicated here https://www.panelook.com/B140XW03+V0_AUO_14.0_LCM_overview_12082.html)
But my laptop S400CA using this screen is a touch screen laptop!
Does it's possible ? can I and how found compatible control board with right connection features (usb-c, DP, hdmi..) for this project ?
I join the pics about laptop version and NS, and sticks back of my screen and laptop.
Thansk a lot for your help!
Posted : 09/02/2024 9:22 pm
Topic starter
update.. I found this touch screen it's a combinaison of the screen B140XW03 and a captative touch screen panel PC0140101 ( https://www.panelook.com/B140XW03+V0_AUO_14.0_LCM_touch_12082.html) but don't found of know to found usb-c control board linking this 2 parts together to make a touch screen! Any ideas ? thanks
Posted : 10/02/2024 4:59 pm
I know this is kinda old but with my research I have learned a lot about display technology and a bit about touch screen interface technology used for laptops.
From what I understand;
- EDP panels 1080P @60hz or below requires 1-2 data lanes using a 30pin connection (usually coaxial I-PEX).
- EDP on-cell/in-cell displays 1080P @60hz or below requires 1-2 data lanes but use a 40pin connection (usually coaxial I-PEX).
- The Touch Interface: Because this is an On-Cell touch panel (digitizer included in the screen assembly), the touch controller communication s generally handled through the same 40-pin connector via the eDP AUX channel or integrated into the display signal depending or the laptop motherboard.
I haven't found a lcd controller board that drive on-cell/in-cell displays without customizing the 40pin connection to adapt the source routing to a 30pin edp controller board.
Most hdmi, type-c and Displayport controller boards that have touch screen options are designed to connect to connect to a separate pcb that connects to the touch screen digitizer. With this configuration the touch screen communicates via usb from the controller board to a pc.
My shelved project was to repurpose a discontinued Facebook or Meta Portal Plus 15.6 inch on-cell 1080P @60hz 2 data lane display but the 40pin edp pinout has been a bit tricky. I know the most common version (non touch) of the lcd panel is 30P edp. Unfortunately all datasheets I have found are for the 30P and not 40P. LP156WFA-SPE1
If I resume this project I will try to identify ground, backlight etc tracing on the Portal plus motherboard in hopes of moving forward!
I hope this helps anyone digging down this rabbit hole.
Posted : 15/09/2026 2:31 am