Screen Printing Custom Membrane Keyboard Silver Conductive Circuit With 1.25MM Pitch

Screen Printing Custom Membrane Keyboard Silver Conductive Circuit With 1.25MM Pitch

Creating a custom membrane keyboard involves several steps, from selecting components to assembly and programming. Here’s a general guide to help you through the process:

1. Select Components

• Membrane Switches: Choose the type of membrane switches you want (tactile, non-tactile, etc.).
• PCB (Printed Circuit Board): You may need a custom PCB or a pre-made one that fits your design.
• Microcontroller: Select a microcontroller that can interface with your switches (e.g., ATmega32u4 for USB).
• Keycap Design: Decide on the keycap style, shape, and material.

2. Design the Layout

• Use software like KiCad or Eagle to create a schematic and design the layout for your PCB.
• Plan the arrangement of keys based on your usage needs (QWERTY, Dvorak, etc.).

3. Fabricate the PCB

• Once your design is complete, send it to a PCB manufacturer for fabrication.

4. Create the Membrane Layer

• You could either purchase a pre-made membrane or have one custom made. This layer should align with the switches and PCB.

5. Assemble the Keyboard

• Mount the switches onto the PCB.
• Attach the membrane layer ensuring it aligns correctly with the switches.
• Connect the microcontroller to the switches and PCB.

6. Programming

• Use firmware like QMK or TMK to program your keyboard. This allows you to customize key functions, macros, and backlighting.

7. Testing

• Test each key for functionality and make sure everything works as intended.
• Debug any issues that arise during testing.

8. Finalize and Encase

• Once everything is working, you can encase your keyboard in a housing of your choice, adding aesthetics and protection.

Additional Considerations

• Backlighting: If you want backlighting, ensure your design supports it.
• Ergonomics: Consider the height and angle for optimal typing comfort.
• Customization: Think about custom keycap designs or printed graphics on the membrane.

Specification:

1)Material (for front or face overlay)

Polyester:

1.Highly versatile for embossing

2.Highly resistant to chemicals

3.Better durability

4.For internal and external use, UV resistance

Polycarbonate:

1.Different surface(Glossy, Matt) and thickness(From 0.12mm~2mm)

2. cost-effective in price

3.For internal and external use

2) Embossing

Rim embossing/pillow embossing/dimple embossing

Graphic overlays can be embossed in order to insert domes/LED, leave space for mechanical keys/LED and provide tactile indications and better tactile feeling.

3)Windows(for display function)

1. print different colors windows, As transparent grey/Red/green window for display

2. Clear/Transparent window for LCD display

2. Matt/semi-transparent window for LED

4)Keys/buttons

Tactile keys---with metal dome or poly dome

Non-tactile--silver printing dots with flat key

5) Embeded LEDs

Small, brilliant lights only about 0.02’’ in height. Avaliable in several vibrant colors.

LED colors: white, yellow, orange, green, red, or double colors LED.

6)Cable

It is an extension of the printed circuit and is used to communicate with your device.

7)Types of connector

1.Zero insertion force (ZIF) connector; 2.Female connector; 3.male connector

8) EMI / RFI / ESD Shielding

use an aluminum foil shielding / a clear ITO electrical conductive polyester

9)Adhesive

mostly used are 3M-double-side glue

10)Backplate-

in aluminum, polycarbonate, acrylic, PCB

About Taida.pdf

Product index:

Life expectancy Flat type≥5,000,000 times Tactile type≥1,000,000 times

Switch stroke: 0.1 to 0.6mm

Contact bounce: 5 to 30ms

Actuation force tolerance: +/- 20 to 45g

Tactile ratio: FC > 40%

Operating voltage: 35V DC

Operating current: 100mA 1W

Contact resistance: < 100 Ohms

Open circuit resistance: ≥ 10MΩ at 100V

Operating temperature: Flat/Metal dome:-20°c to +80°c

Storage temperature: Flat/Metal dome:-40°cto +80°c

Operating humidity: up to 95% RH

Female, male connector, solder pins and heat seal connectors are available

More photos show :

Application:

FAQ:

Taida is a factory and was founded in the 2010 year in China, which focus on the professional design and manufacture of Membrane Switch and Graphic overlays (including different many kinds membrane switch and graphic overlay ,such like LED ,FPC circuit ,waterproof and tactile ,PMMA ,protective film and so on )manufacturers,

Experience:

Taida and engineers have Highly over 15 years experienced on Membrane switch and graphic overlay designs, 500+ customers from worldwide such like USA,UK ,Germany and others , 1000+ new designs per year

Factory Strength and Production Capacity:

Over 2000 square meters of modern plant, spacious and bright clean workshop; more than 25 full Automatic and Semi-Automatic printing machine and other professional Automation equipment,such like testing machine ,UV machine and so on , Taida’ capability has reached 300, 000PCS/month in a very short period since company established.

Quality Control and Ensure :

Taida has got certification of ISO9001: 2000, and also the accreditation for RoHS ,REACH ,UL SGS to meet customer′s requirements.All workers are fully trained before going to production line.and Ensure 100% testing and inspecting before shipping .

Speed & Efficiency:

Concept to Design: < 3 business days

Goods lead time : 12-15 days

Rapid Prototyping: 4-7 days

Overseas Manufacturing

Utilized for larger production volumes and to ensure we can offer the most competitive pricing and Fast lead time to our customers