7.0" FHD+ AMOLED Display with 144Hz & On-Cell Touch

1) General Specifications

2) IO Terminals & Pin Assignment

2.1 Main FPC — OK-F302-39115

2.2 System Interface Topology

VBAT → EL PMIC         VDDI (1.8 V) → DDIC logic     VCI (3.0 V) → DDIC analog
MIPI DSI 4-Lane → ICNA3512           TE → Host sync
Touch: FT3519 via I²C (SCL/SDA) + INT + RESET

3) Absolute Maximum Ratings

4) Electrical Characteristics

5) AC Characteristics

5.1 MIPI DSI

Supports 4-lane HS burst. Follow ICNA3512 D-PHY timing for LP↔HS transitions, setup and hold, eye margins, and skew.

5.2 RESET Timing

At VDDI = 1.65-1.95 V, VCI = 2.65-3.6 V, -40 to 85 °C: hold RST = Low ≥10 ms, then High ≥20 ms before DSI init.

6) Recommended Power On/Off Sequence

6.1 Power-On

1. Enable VDDI → VCI → VBAT with 2-5 ms inter-rail delays.
2. RST = Low (≥10 ms) → High (≥20 ms).
3. Configure MIPI, send init table, set gamma, brightness, and frame rate.

6.2 Power-Off

1. Display OFF, wait frame end.
2. Disable VBAT → VCI → VDDI.
3. Ensure DSI returns to LP before rails drop.

// Pseudo code
enable(VDDI); delay_ms(2);
enable(VCI);  delay_ms(2);
rst_low();    delay_ms(10);
rst_high();   delay_ms(20);
mipi_init(4_lanes, clk_hz);
dsi_write_seq(init_table);
set_gamma(2.2);
set_brightness(nits_to_code(300));
set_fps(120);
dsi_cmd(DISPLAY_ON);

7) Touch Design

8) Optical Characteristics

9) Environmental / Reliability

10) Appearance & Quality

10.1 Defect Classes

• CR (Critical): Safety or complete functional loss.
• MA (Major): Function degraded or partial loss, or three or more Minor combined.
• MI (Minor): Cosmetic, with no functional impact.

10.2 Sampling and AQL

• Sampling: GB/T 2828.1-2012 (normal inspection)
• AQL: CR = 0; MA = 0.65; MI = 1.0

10.3 Inspection Conditions

• Unlit 1000 ± 200 lux; lit ≤ 200 lux; black background.
• Distance 30 ± 5 cm; Angle ±45°.
• Time: unlit 10-12 s; lit 1-3 s per pattern; 15-35 °C, 20-75%RH.

11) Mechanical & Packaging

11.1 Key Mechanical Notes

• Module thickness 1.028 mm (including POL and foam). Local stack-ups must meet drawing Hmax.
• Connectors: Main FPC OK-F302-39115; Touch FPC OK-F501-10325.
• Tear tabs, tapes, and foams per drawing must not intrude AA.

11.2 Packing

• Tray surface resistivity 10⁴-10⁹ Ω; 4 pcs/tray.
• Carton: 24 trays (22 full + 2 empty PET trays) → 88 pcs/carton.

12) Precautions for Use

• Glass module: avoid drop and impact; do not press the screen or edges.
• POL surface is soft; blow first then dry-wipe; if solvent is needed use ethyl alcohol only.
• No water, ketone, or aromatic solvents. Do not disassemble.
• Do not feed signals when logic power is off. Ensure ESD control and avoid overly dry environments.
• Peel protective film slowly with ESD grounding.
• Storage: 0-40 °C, ≤80%RH, no acid, alkali, or harmful gas, avoid light. Transport: prevent drop, pressure, wet exposure, and sun exposure.

13) Applications & Recommendations

13.1 Consumer and Premium Handhelds

• Android handheld consoles: portrait 7-inch format works well for indie and retro usage; 120/144 Hz reduces blur.
• High-end e-book and note devices: 315 PPI supports crisp text; HBM 1000 nits improves visibility.
• Smart home panels: premium contrast and flicker control support comfortable viewing.

13.2 Industrial HMI and Rugged Terminals

• Factory and UAV ground stations: operating range supports outdoor deployment needs.
• Medical and diagnostic carts: wide viewing angle helps multi-person review.
• Retail POS and kiosks: HBM performance helps in bright spaces.

13.3 Automotive and Mobility

• Rear-seat systems: deep blacks and 120 Hz improve perceived quality.
• Cluster-adjacent widgets: On-Cell touch reduces total stack height.
• Fleet tablets: low-temperature start and protected logistics handling support field use.

13.4 Public Information and Hospitality

• Room signage: high contrast and good uniformity create a premium appearance.
• Museum labels: OLED blacks work well in dim rooms.
• Airports and stations: HBM improves visibility in bright halls.

13.5 Pro AV and Photography

• Field monitors: high contrast supports focus and visual review.
• Wireless mixer interfaces: TE and high refresh help reduce visible artifacts.

13.6 Education and Remote Work

• Podium secondary screens: portrait layout suits notes and timers.
• Portable conference terminals: wide view and low flicker support long sessions.

13.7 Integration Tips

• EMI and ESD: keep MIPI pairs short and length-matched; place TVS near the FPC.
• Thermal: couple PMIC to chassis and avoid AA-edge hot spots.
• Power: enforce sequencing and budget for HBM and high-fps current peaks.
• Touch: respect FT3519 reset and INT timing; keep I²C away from noisy regions.
• Quality: inspect under the specified lighting conditions to catch subtle defects.

14) FAQ

// Quick sketch
enable(VDDI); delay_ms(2);
enable(VCI);  delay_ms(2);
rst_low();    delay_ms(10);
rst_high();   delay_ms(20);
mipi_init(4_lanes, clk);
dsi_write_seq(init_table);
dsi_cmd(DISPLAY_ON);