Lib-electronic-components raydium

Raydium Semiconductor MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Raydium display/touch controller components or RaydiumHandler.

install

source · Clone the upstream repo

git clone https://github.com/Cantara/lib-electronic-components

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/Cantara/lib-electronic-components "$T" && mkdir -p ~/.claude/skills && cp -r "$T/.claude/skills/manufacturers/raydium" ~/.claude/skills/cantara-lib-electronic-components-raydium && rm -rf "$T"

manifest: .claude/skills/manufacturers/raydium/SKILL.md

source content

Raydium Semiconductor Manufacturer Skill

MPN Structure

Raydium MPNs follow this general structure:

[PREFIX][SERIES][MODEL][PACKAGE]
   |       |       |       |
   |       |       |       +-- Package: COG, COF, BGA, QFN, WLCSP
   |       |       +-- Model number (3 digits: 120, 091, etc.)
   |       +-- Series digits (68, 69, 31, 35)
   +-- RM prefix (all Raydium products)

Example Decoding

RM68120
|  |  |
|  |  +-- 120 = Model number
|  +-- 68 = TFT LCD driver series
+-- RM = Raydium prefix

RM69091-COG
|  |    |
|  |    +-- COG = Chip-on-glass package
|  +-- 69091 = AMOLED driver model
+-- RM = Raydium prefix

RM31100BGA
|  |    |
|  |    +-- BGA = Ball grid array package
|  +-- 31100 = Touch controller model
+-- RM = Raydium prefix

Product Families

RM68xxx Series - TFT LCD Drivers

Part Number	Description	Resolution
RM68120	TFT LCD driver	320x480
RM68140	TFT LCD driver	Variable
RM68172	TFT LCD driver	Variable

RM69xxx Series - AMOLED Display Drivers

Part Number	Description	Features
RM69032	AMOLED driver	Small panel
RM69080	AMOLED driver	Mid-size panel
RM69091	AMOLED driver	Wearable display
RM69299	AMOLED driver	Premium panel

RM31xxx Series - Touch Controllers

Part Number	Description	Features
RM31100	Touch controller	Capacitive touch
RM31080	Touch controller	Multi-touch

RM35xxx Series - Touch + Display Controllers

Part Number	Description	Features
RM35xxx	Integrated touch+display	Combined controller

Package Codes

Code	Package	Description
COG	Chip-on-Glass	Direct bonding to glass substrate
COF	Chip-on-Film	Flexible film bonding
BGA	Ball Grid Array	Standard BGA
QFN	Quad Flat No-leads	Leadless package
WLCSP	Wafer Level CSP	Ultra-compact package

Package Notation

Raydium uses two package notation styles:

Hyphenated: RM69091-COG
Concatenated: RM31100BGA

Handler Implementation Notes

Pattern Matching

// RM68xxx - TFT LCD drivers
"^RM68[0-9]{3}[A-Z0-9-]*$"

// RM69xxx - AMOLED display drivers
"^RM69[0-9]{3}[A-Z0-9-]*$"

// RM31xxx - Touch controllers
"^RM31[0-9]{3}[A-Z0-9-]*$"

// RM35xxx - Touch + display integrated
"^RM35[0-9]{3}[A-Z0-9-]*$"

Package Code Extraction

// Method 1: Check for hyphenated package (RM69091-COG)
int hyphenIndex = mpn.indexOf('-');
if (hyphenIndex > 0) {
    String suffix = mpn.substring(hyphenIndex + 1);
    if (PACKAGE_CODES.containsKey(suffix)) {
        return PACKAGE_CODES.get(suffix);
    }
}

// Method 2: Check for concatenated package (RM31100BGA)
// Base part is RMxxyyy (7 chars), package follows
if (mpn.length() > 7 && mpn.matches("^RM[0-9]{5}[A-Z]+.*$")) {
    String suffix = mpn.substring(7);
    for (String pkg : PACKAGE_CODES.keySet()) {
        if (suffix.startsWith(pkg)) {
            return PACKAGE_CODES.get(pkg);
        }
    }
}

Series Extraction

Returns the first 4 characters (RM + 2 digits):

RM68120 -> "RM68"
RM69091 -> "RM69"
RM31100 -> "RM31"
RM35xxx -> "RM35"

Product Type Determination

public String getProductType(String mpn) {
    String series = extractSeries(mpn);
    return switch (series) {
        case "RM68" -> "TFT LCD Driver";
        case "RM69" -> "AMOLED Display Driver";
        case "RM31" -> "Touch Controller";
        case "RM35" -> "Touch + Display Controller";
        default -> "";
    };
}

Related Files

Handler:
```
manufacturers/RaydiumHandler.java
```
Component types:
```
IC
```

Common Use Cases

Display Technology Selection

Application	Recommended Series	Notes
TFT LCD panels	RM68xxx	Traditional LCD
AMOLED displays	RM69xxx	Premium OLED
Touchscreens	RM31xxx	Capacitive touch
Integrated touch display	RM35xxx	Combined solution

Smartphone/Wearable Displays

Raydium is a major supplier for smartphone and wearable display drivers:

RM69091: Popular in smartwatch AMOLED displays
RM68120: Used in smartphone TFT LCD modules
RM31100: Touch controller for smartphone screens

Replacement Considerations

Same Base Part Replacements

Parts with the same model number but different packages are typically interchangeable from a functionality perspective (but require different PCB footprints):

RM69091-COG == RM69091BGA (same driver, different package)

Within-Series Compatibility

Parts within the same series (e.g., RM69xxx) are NOT necessarily compatible - they support different panel resolutions and specifications.

Learnings & Edge Cases

COG/COF packages: These are bare die packages designed for direct bonding to display panels. They require specialized assembly.
7-character base: Raydium base part numbers are always RMxxxxx (7 characters) - RM + 5 digits.
No variant letters: Unlike some manufacturers, Raydium typically doesn't use variant letters; differences are in the model number itself.
Display-specific: Different RM69xxx parts support different panel resolutions - always verify against the target display panel datasheet.
Touch vs Display: RM31 is touch only, RM35 is integrated touch+display, RM68/69 is display only.