Choosing the correct touch panel (TP) structure is one of the most important decisions you'll make when designing a display product. Get it wrong and you'll face higher costs, reliability issues, or disappointed customers. Get it right and everything else (optical performance, thickness, durability, and price) falls into place.
Here's a straightforward, no-nonsense guide to picking the best TP structure for your next project - whether it's an 8-inch industrial HMI, medical monitor, outdoor kiosk, or consumer tablet.
(if you want to get more information of the TP, you can click here.)
Step 1: Answer These 5 Questions First
Before looking at G+G, On-cell, etc., answer these honestly:
1.What environment will the product live in? → Factory floor with gloves and water? Outdoor sunlight and -20°C winters? Clean indoor office?
2.How important is thickness and weight? → Handheld portable device or fixed industrial panel?
3.What's your target cost per screen? → $5–10 (consumer) or $30–80 (industrial/medical)?
4.Do you need optical performance in bright light? → Sunlight readable 1000 nits outdoors?
5.What's your expected yearly volume and product lifespan? → 1,000 pcs/year for 5 years or 500,000 pcs/year for 18 months?
Your answers will immediately eliminate 70% of the options.
Step 2: The 7 Structures – When to Use Each (2025 Real-World Recommendations)
| Structure | Best For | Thickness | Cost Level | Durability | Optical Bonding Ease | Long-Term Availability | Recommendation in 2025 |
|---|---|---|---|---|---|---|---|
| G+G (Glass+Glass) | Industrial, automotive, marine, medical | 1.5–2.5 mm | Medium-High | ★★★★★ | Excellent | Excellent (5+ years) | Still the #1 choice for any serious industrial project |
| G+F (Glass+Film) | Mid-range industrial, POS, kiosks | 1.0–1.8 mm | Medium | ★★★★☆ | Very Good | Very Good | Great cost-durability balance when G+G is too expensive |
| OGS (One Glass Solution) | High-end tablets, laptops, thin industrials | 0.7–1.2 mm | Medium-High | ★★★☆☆ | Good | Good | Use only if thickness <1.1 mm is mandatory |
| On-Cell | Consumer tablets, some mid-range industrial | Built-in | Low-Medium | ★★★☆☆ | Limited (air-gap common) | Depends on panel maker | Good if you buy full display module from BOE/Tianma |
| In-Cell | Flagship smartphones only | Built-in | High | ★★★☆☆ | Very Limited | Short lifecycle | Almost never for custom/industrial projects |
| G+FF (Glass+Film+Film) | Legacy support only | 1.2–2.0 mm | Medium | ★★★☆☆ | Fair | Declining | Avoid for new designs |
| GF (Film only) | Ultra-low-cost or very large sizes (>32") | <1.0 mm | Low | ★★☆☆☆ | Poor | Good | Only when every dollar counts |
Step 3: Decision Matrix – Real Project Examples
| Project Type | Recommended Structure | Why |
|---|---|---|
| 8" Outdoor industrial HMI (1000 nits, gloves, -20~70°C) | G+G (always) | Proven reliability, easy optical bonding for sunlight readability, long supply |
| 10" Medical monitor (indoor, clean room) | G+G or OGS | G+G for maximum durability; OGS if you want thinner bezel look |
| 7–10" Rugged handheld terminal | G+G | Impact resistance is critical |
| 10" Indoor POS / kiosk (moderate use) | G+F or On-Cell | Good cost saving without sacrificing too much |
| Thin consumer tablet (<6mm total thickness) | OGS or On-Cell | Thickness is king |
| Ultra-budget indoor digital signage | GF or air-bond G+F | Lowest cost possible |
Step 4: Hidden Factors Most People Miss
Optical Bonding Compatibility The best sunlight-readable performance (1000–1500 nits) comes from optical bonding (removing air gap). Only G+G and G+F bond perfectly without bubbles or delamination long-term.
Repairability & Spare Parts G+G fails? Replace the touch panel easily. In-Cell or On-Cell fails? You replace the entire display module (3–5× cost).
Supply Chain Risk G+G sensors are made by many factories (TVI, GIS, Truly, etc.). In-Cell depends on only a few big panel makers who can discontinue a model anytime.
Glove & Water Performance True thick-glove + water rejection is still easiest with high-quality G+G controllers (Goodix, Ilitek, EETI).
MOQ and Customization Need cover glass printed with your logo or special anti-fingerprint coating? Only G+G and G+F give you full freedom at reasonable MOQ (500–1000 pcs).
Final Recommendation (2025)
Industrial / Outdoor / Medical / Automotive → Choose G+G 95% of the time. It's slightly more expensive, but you'll sleep better for the next 5–8 years.
Thin consumer or high-volume indoor → OGS or On-Cell can save money and thickness.
Budget indoor only → G+F is the sweet spot.
Pick the structure that matches your harshest requirement, not the one that looks coolest on paper. A slightly thicker, rock-solid G+G panel that works perfectly for 10 years almost always beats a super-thin OGS that has issues after 18 months.
If you're working on an 8-inch high-brightness project right now, just go with G+G + full optical bonding. You (and your customers) will thank me later.
