An interesting display choice seems to be one from HP Dragonfly Folio G3. It’s 13.5" 3:2 and should fit the Framework rather nicely. It seems to be have a Wacom AES digitizer. I cannot quite confirm that it is I2C, but it seems almost all HP touchscreens with Wacom AES are I2C, as per wacom-hid-descriptors.
HP offers several useful information sources about the laptops internals, including a Maintenance and Service Manual and an hour-long YouTube video with instructions on replacing parts and detailed shots of the internals.
From the video, I took the most relevant and detailed shots of the digitizer and display interfaces I could.
The display seems to have standard 30pin eDP interface (for the WUXGA, the OLED would presumably have 40pin):
This is the touch controller board:
And this is the overall look at the display connections:
The digitizer board is HP PN N22944-001 and can be bought separately, tough the price is quite hefty.
Per the specs, there are several screen configurations:
- 13.5" diagonal, 3:2 WUXGA+, 400 nits, BrightView Touch, Corning® Gorilla® Glass 7
- 13.5" diagonal, 3:2 WUXGA+, 400 nits, Anti-Glare Touch, Corning® Gorilla® Glass 7 (HP PN N23302-001)
- 13.5" diagonal, 3:2 WUXGA+ Sure View Reflect, 1000 nits, BrightView Touch, Corning® Gorilla® Glass 7
- 13.5" diagonal, 3:2 3k x 2k, 400 nits, OLED, BrightView Touch, Corning® Gorilla® Glass 7
I am quite partial toward the matte one (it actually has a matte Gorilla glass finish, not just a matte screen protector slapped on a glossy glass). I have used similar screens on other HP models and they are simply gorgeous.
The touchscreen seems to be readily available from Ebay (1, 2). Based on the photos, it seems to even include the digitized board.
The WUXGA panel is Chi Mei CMN13C0 according to Notebookcheck. The digitizer assembly is definitely custom made for HP.