In the development of electronic products, the selection of screen technology directly affects the performance, cost, lifespan, and market acceptance of the product. with OGS（One Glass Solution）、In-Cell、On-Cell、GG（Glass+Glass）、GF（Glass+Film）、GFF（Glass+Film+Film） With the emergence of different touch screen technologies, developers are faced with multiple choices and the advantages and disadvantages brought by different technologies.

Choosing the appropriate screen technology is not only a matter of cost, but also related to the user experience, durability, display effect, and long-term stability of the product. Therefore, correct selection techniques and engineering case analysis are crucial to ensure the smooth progress of the project.

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Lihuang Technology will mainly explore in depth the practical application scenarios of OGS, In Cell, On Cell, GG, GF, and GFF technologies

1. Engineering selection skills to help engineers understand how to choose appropriate technologies in different demand scenarios

2. Engineering case analysis, analyzing the advantages and disadvantages of different technologies based on actual projects, helping product teams make informed decisions

Introduction and Characteristics of OGS Technology
OGS (One Glass Solution) is a touch screen technology that integrates touch sensors directly into glass panels, making screen designs thinner and more compact. The biggest advantage of OGS technology is that it simplifies the design, reduces the combination of traditional glass and touch panels, lowers the thickness of the screen, and improves the light transmittance and display effect.

Technical features of OGS:

Thin design: The touch sensing layer and protective glass are combined into one, reducing the thickness of the device.

High transmittance: reduces additional glass layers, improving the brightness and display effect of the screen.

High touch sensitivity: Due to the direct integration of the touch layer and glass layer, the touch response speed is faster and the touch experience is smoother.

High process complexity: Due to the integration of touch sensing layers into glass, the production process is relatively complex and the cost is relatively high.

LCD screen

Applicable scenarios:

OGS technology is mainly applied to high-end consumer electronics products that require thin design, high display performance, and fast touch response. For example, smartphones, tablets, smartwatches, and high-end home appliance panels.

OGS project selection skills:

Suitable for high-end products: OGS technology is suitable for devices with high requirements for appearance and touch effects, especially in smartphones, tablets, and portable devices.

When prioritizing the OGS solution, it is necessary to ensure that the screen display requirements of the product are high, while considering cost issues and avoiding excessive thickening and affecting the display effect.

When selecting, please note that OGS is suitable for small and medium-sized devices (such as 7 inches to 10 inches), and OGS technology is not very suitable for large screens (such as 55 inch advertising machines).

OGS Engineering Case:

OGS technology is widely used in smartphone development. For example, iPhone 6 and later models use OGS technology to achieve thinner display panels while ensuring touch sensitivity and clarity of display effects. In order to optimize performance, OGS technology has made multiple optimizations in the integration of backlight design and touch sensing, balancing the screen's response speed and battery life.

In Cell Technology Selection and Engineering Application Cases
1. Introduction and Characteristics of In Cell Technology

In Cell technology is a technique that directly embeds a touch sensing layer into a liquid crystal panel. It breaks through the traditional touch screen structure, where the touch sensor and display panel are completed in the same layer structure, which can reduce the thickness of the device and improve touch accuracy.

Technical features of In Cell:

Thinner design: The touch sensing layer is integrated inside the LCD panel, without the need for an additional glass layer, resulting in a thinner overall thickness.

Improved display effect: Due to the absence of an additional glass layer, In Cell technology can provide higher transmittance and better display performance.

Faster response speed: The touch sensing is directly integrated with the display panel, improving the touch response speed.

Moderate cost: Compared to OGS technology, In Cell has relatively lower production costs and is suitable for large-scale applications.

Touch LCD screen

Applicable scenarios:

In Cell technology is commonly used in high-end devices that require ultra-thin design and high touch response, such as smartphones, tablets, wearable devices, etc.

In Cell Engineering Selection Techniques:

Priority should be given to In Cell technology when the device needs to improve display performance and touch response speed, and the design should minimize the number of layers, making it suitable for mid to high end smart devices.

Cost control: In Cell technology has a higher cost-effectiveness compared to OGS technology while ensuring good display and touch performance.

For larger screen devices, the display effect of In Cell technology is more ideal, but there are challenges such as technical difficulty and increased cost.

In Cell Engineering Case:

For example, the iPhone 7 uses In Cell technology, which embeds touch sensors into the LCD panel, bringing a thinner body design and smoother touch experience. Its display effect has been improved and touch delay has been reduced, resulting in high user ratings for the device in the market.

3、 On Cell Technology Selection and Engineering Application Cases

1. Introduction and Characteristics of On Cell Technology

On Cell technology is a technique that embeds touch sensors onto the surface of a display panel, rather than inside a liquid crystal panel. This structure is more suitable for certain devices than In Cell because it does not affect the structure of the display panel.

Technical features of On Cell:

Design simplicity: Compared to In Cell, On Cell technology uses touch sensors on the surface of the display panel, eliminating the need for complex hierarchical structures.

Good display effect: On Cell technology performs excellently in display clarity, brightness, and color saturation, but may be affected by the thickness of the touch sensitive layer.

Lower manufacturing difficulty: Compared to In Cell, On Cell technology has lower production costs, simpler processes, and shorter production cycles.

Applicable scenarios:

On Cell technology is commonly used for devices that require mid to high end display effects, such as tablets, smartphones, car devices, etc.

On Cell Engineering Selection Techniques:

On Cell technology is suitable for products that have high requirements for display performance and also hope to reduce costs.

For mid-range products with low demand, On Cell technology is an economical and effective choice.

On Cell Engineering Case:

For example, the Samsung Galaxy S6 adopts On Cell technology and brings a thinner design, faster responsive touch experience, and optimized display effects to the device. Through the application of On Cell technology, the screen design of devices has been streamlined and the user's touch experience has been improved.

4、 GG, GF, GFF technology selection and engineering application cases

1. Introduction and Characteristics of GG Technology

The GG (Glass+Glass) structure is the most traditional touch screen design, using two layers of glass: one for the display screen and the other for the touch screen. The GG structure is relatively mature, the technology is stable, and the production process is simple.

The main characteristics of GG technology are:

Simple structure: Two pieces of glass are used, one as the display panel and the other as the touch sensing layer.

Stable display effect: Due to the use of glass material, it has good stability and high reliability.

Lower cost: Compared to other technologies, the cost of GG structure is lower.

Applicable scenarios:

GG technology is widely used in low-end display products, consumer electronics, and simple industrial equipment, especially in cost sensitive products.

GG Engineering Selection Techniques:

The GG structure is suitable for cost sensitive products, especially in the low-end market, and is a suitable choice when very complex touch display effects are not required.

When selecting, durability and long-term use need to be considered, and GG structure performs very well in this regard.

GG Engineering Case:

For example, many simple household appliances such as microwave ovens, air conditioning control panels, and traditional electronic scales use GG technology. Their display requirements are relatively basic, with sufficient character display and a certain degree of stability.

2. Introduction and Characteristics of GF Technology

GF (Glass+Film) technology is a structure that combines glass and thin film, reducing the thickness and weight of devices by combining a thin film touch layer with display glass.

The main features of GF technology are:

Lightweight: Compared with GG structure, GF technology significantly reduces the number of glass layers, making it suitable for devices that require lightweight design.

Lower cost: Thin film touch technology is cheaper than glass, reducing production costs.

Easy to achieve good display effect: Although using thin film, its display effect and stability are still good.

Applicable scenarios:

GF technology is widely used in mid to low end products, especially in smartphones, tablets, car displays, and other applications.

GF Engineering Selection Tips:

GF technology is suitable for mid to low end devices, especially those that require thinness, low cost, and high display performance.

When selecting, if you need to improve display clarity and reduce device thickness, GF is a good choice.

GF Engineering Case:

Early smartphones and tablets, such as iPhone 4 and iPad 2, adopted GF structure, providing superior touch experience and good display effect, but their thickness is slightly larger compared to modern devices.

3. Introduction and Characteristics of GFF Technology

GFF (Glass+Film+Film) technology combines two layers of thin film with glass to achieve lightweight design while improving touch performance.

The main features of GFF technology are:

More sensitive touch performance: Through the design of two thin films, the touch response speed and accuracy have been improved.

Enhanced reliability: The two-layer thin film design enhances the stability of the touch screen and reduces the possibility of malfunctions.

Optimized design: reduces overall thickness and lowers production costs.

Applicable scenarios:

GFF technology is suitable for mid to high end smartphones, tablets, wearable devices, and other high-performance touch display devices, especially in applications that require high touch sensitivity and display performance.

GFF engineering selection skills:

GFF technology is suitable for devices with high requirements for touch experience, display effect, and weight, especially for scenarios that require thinning and damage resistance.

When choosing GFF, it is necessary to consider touch performance and durability, especially in high-frequency environments.

GFF Engineering Case:

High end smartphones such as iPhone 7 use GFF technology, providing higher touch sensitivity and thinner exterior design, while improving display performance.

5、 Selection suggestions

When choosing OGS, In Cell, On Cell, GG, GF, GFF technologies, reasonable decisions must be made based on actual application scenarios, cost control, display performance requirements, and engineering needs.

OGS is suitable for:

High end consumer electronics devices require high requirements for thinness, high display performance, and high touch sensitivity

In Cell is suitable for:

High end devices (mobile phones, tablets) require high display effects and touch response speed

On Cell is suitable for:

Mid to high end equipment with high cost-effectiveness requirements

GG is suitable for:

Low end products, cost sensitive equipment

GF is suitable for:

Mid to low end devices that require lightweight design

GFF is suitable for:

Mid to high end devices with high requirements for touch performance and display effects

6、 Frequently Asked Questions

Q1: Which is more suitable for high-end smartphones, OGS or In Cell technology?
In Cell technology is more suitable because it embeds the touch sensing layer inside the display panel, enabling thinner designs, higher display effects, and smoother touch experiences.
Q2: Why are GF and GFF technologies more cost-effective?
GF and GFF technologies use thin films to replace some glass layers, reducing the complexity of production processes and thus significantly reducing costs.
Q3: Can GFF technology be used instead of GG technology?
Yes, GFF technology has better touch sensitivity and thinner design, often replacing GG technology in mid to high end devices.
Q4: Why is graphic display more suitable for using graphic LCD modules?
The graphic LCD module supports higher resolution and more display content, and can display Chinese characters, images, animations, menu interfaces, etc., while the character LCD can only display limited symbols and numbers.