レーザーエッチングされたシリコンキーパッド
レーザーエッチングされたシリコン キーパッドは、コーティングされたシリコン キーとレーザーでマークされた凡例を使用して、バックライト付きコントロールに使用される耐久性のあるシンボルを作成します。レーザーは正確な領域のトップ コーティングを除去するため、半透明のシリコンが透けて見えるようになり、コーティングの下にコントラストのあるベース カラーが現れます。 JASPER は、OEM 製品がシャープなアイコン、昼夜を問わず読み取り可能性、耐摩耗性、成形キー上の安定したグラフィックスを必要とする場合に、レーザーエッチングされたシリコン キーパッドを使用します。
シリコンキーパッドにレーザーエッチングが使用される理由
印刷された凡例は、特にシンプルなカラーマークや摩耗の少ない製品の場合、シリコンキーパッドに適しています。しかし、一部の製品には、繰り返しの接触、洗浄、手袋の摩擦、油、汗、長年の使用に耐えるシンボルが必要です。
レーザーエッチングは、通常の印刷とは異なる問題を解決します。このプロセスでは、キーの上にインクを置くのではなく、成型されたシリコン表面からコーティング層を除去します。ベースのシリコンが半透明の場合、開いた凡例が下の LED から点灯します。ベースのシリコンが対照的な色の場合、凡例はコーティングを通して永続的なマークとして表示されます。
このため、レーザーエッチングされたシリコン キーパッドは次の用途に特に役立ちます。
- バックライト付きアイコンと夜間使用コントロール
- 自動車および交通機関のボタン
- 医療機器や研究機器は頻繁に洗浄されます
- 手袋をしたまま使用される産業用制御装置
- 使用頻度の高いキーを備えたリモート コントロールおよびハンドヘルド機器
- 印刷された凡例がすぐに摩耗する可能性がある製品
レーザー エッチングは、すべてのキーパッドにとって自動的に優れているわけではありません。製品に耐久性やコーティング除去による点灯シンボル制御が必要な場合に最適です。
一般的なレーザーエッチングされたキーパッド スタック
| Layer or feature | Purpose | Design note |
|---|---|---|
| Silicone base | Provides molded key shape and, when needed, light transmission | Translucent or colored silicone is selected before tooling and coating. |
| Opaque coating | Blocks light and creates the top surface color | Coating thickness affects laser quality and light blocking. |
| Laser-etched legend | Opens the icon, text, number, or symbol | Laser power and focus must avoid rough edges or silicone damage. |
| Optional PU/top coating | Adds abrasion and chemical resistance | Must stay compatible with the laser process and final appearance. |
| LED and circuit carrier | Provides illumination for backlit legends | LED location must match legend position and key geometry. |
バックライト付きキーパッドの場合は、レーザー エッチングと LED レイアウトを一緒に計画する必要があります。 LED が間違った場所にあると、完璧なレーザー マークでも見た目が悪くなります。
レーザーエッチングとパッド印刷
| Factor | Laser-etched silicone keypad | Pad-printed silicone keypad |
|---|---|---|
| How legend is made | Laser removes coating to reveal base silicone or light path | Ink is printed onto key surface |
| 主な用途 | Backlit symbols, high-use legends, day/night controls | Color graphics, simple icons, non-backlit designs |
| Wear behavior | Legend is less exposed because it is created through coating removal | Ink layer may need protective coating for high-wear keys |
| Color flexibility | Usually controlled by coating and base color | More flexible multi-color printing |
| Tooling impact | Requires coating and laser process control | Requires print tooling and ink process control |
| Common use | Automotive, medical, industrial, marine, night-use controls | Consumer, appliance, industrial, and general OEM keypads |
Many keypads use both: pad printing for logos or colored markings, laser etching for illuminated key legends, and a protective coating over high-touch areas.
What We Control During Laser-Etched Keypad Production
Coating system
The coating must bond to silicone, block light, accept laser marking, and survive the product environment. A coating that looks good in a sample can fail if it is not matched to cleaning chemicals, UV exposure, oil, or abrasion.
Laser parameters
Laser power, speed, focus, and pass count affect edge sharpness, icon brightness, and substrate damage. Too little energy leaves haze or incomplete opening. Too much energy burns the silicone or makes rough symbol edges.
Icon size and line width
Very fine legends may look good on artwork but lose clarity after coating, laser etching, and backlighting. We review minimum line width, spacing, and icon shape before production.
Light transmission
For backlit legends, the etched opening must transmit enough light without creating glare or hot spots. This depends on silicone color, coating opacity, LED position, key thickness, and any diffuser or spacer in the assembly.
Surface protection
High-use keypads may need PU coating or another topcoat system for abrasion resistance. The final stack must be validated as a system, not as separate print, laser, and coating operations.
Common Problems Laser Etching Prevents — and Can Create
| Problem | How laser etching helps | What still needs control |
|---|---|---|
| Printed legend wears off | Legend is made by opening coating rather than adding ink only | Coating must still resist wear around the legend |
| Backlit icon looks fuzzy | Laser can create crisp symbol edges | Laser focus and coating thickness must be consistent |
| Day/night mismatch | Same icon can work with LED on and off | Coating color and base silicone must be selected carefully |
| Light bleeds around key | Opaque coating blocks unwanted glow | Housing and spacer may still need light blocking |
| Fine symbols lose detail | Laser can mark small features | Artwork must respect realistic line width and spacing |
Laser etching is a precision process, but it is not a shortcut around optical design. It works best when the keypad, coating, PCB, LED, and housing are developed together.
Best 用途
Laser-etched silicone keypads fit products where the legend is part of the product’s usability and safety:
- Automotive seat controls, steering controls, console switches, and illuminated buttons
- Medical devices with repeated cleaning and low-light operation
- Industrial controllers where gloves and abrasion are common
- Marine and outdoor electronics exposed to moisture and UV
- Security systems, access panels, and night-use devices
- Premium remote controls and handheld test instruments
If the project is primarily about LED performance, see Backlit シリコンラバーキーパッド. If the project is primarily about electrical contact, see 導電性ゴム製キーパッド.
RFQチェックリスト
For a laser-etched silicone keypad quote, send:
- Vector artwork for icons, numbers, and text
- Required key color and illuminated color
- Daytime and nighttime appearance expectations
- Existing LED layout or PCB drawing if available
- Key dimensions, height, travel, and actuation-force target
- Wear, cleaning, UV, oil, sweat, or chemical exposure
- Required coating: matte, gloss, PU, epoxy, or other finish
- Annual volume, sample quantity, and launch schedule
- Any industry compliance or test requirement
FAQ
What is a laser-etched silicone keypad?
A laser-etched silicone keypad is a molded silicone keypad with legends created by laser marking through a coating layer. The laser removes selected areas of the coating to reveal a contrasting silicone color or translucent silicone for backlighting.
Is laser etching better than printing on silicone keys?
Laser etching is better when the keypad needs durable legends, backlit icons, or day/night readability. Pad printing is often better for multi-color graphics, lower-wear labels, or designs that do not need illuminated symbols. Many OEM keypads use both methods.
Can laser-etched silicone keypads be backlit?
Yes. This is one of the most common reasons to use laser etching. A translucent silicone base is coated with an opaque color, then the icon is laser-etched so LED light can pass through only the marked area.
What files do you need for laser-etched legends?
Vector artwork is preferred for icons, numbers, text, and symbols. We also need key dimensions, target color, illuminated color, LED location if available, and the product environment so coating and laser parameters can be selected correctly.
Get Laser-Etched Legends Right Before Sampling
Send your icon artwork, color target, LED plan, and expected wear environment. We will review whether the keypad should use laser etching, pad printing, coating, backlighting, or a combination of these processes.
Need help with laser-etched silicone keypads?
Send your drawing, layout, environment, circuit plan, and annual volume. We will review the keypad stack before tooling.
見積もりを依頼