Sharp LQ104S1DG21 10.4 Inch TFT LCD Display

The Sharp LQ104S1DG21 is a 10.4-inch industrial TFT-LCD module designed for equipment requiring an 800 × 600 SVGA display. It uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display mode and supports 262K colors. The panel has a 211.2 × 158.4 mm active display area and a 4:3 display format.

The display provides a typical luminance of 350 cd/m² and a typical contrast ratio of 300:1. Its viewing angle is specified as 70° left, 70° right, 40° up, and 70° down under the stated CR ≥ 10 condition. The panel also features antiglare, 3H hard coating, and antireflection surface treatments.

The LQ104S1DG21 uses a CMOS digital RGB interface with a 1-channel, 6-bit configuration and a 41-pin connector. It operates with a typical VCC supply of 3.3V/5.0V and uses two CCFL backlight tubes with a specified life of 50,000 hours. The backlight driver or inverter is not built into the module.

This Sharp LCD module is particularly relevant for industrial PCs, HMI equipment, instrumentation, control systems, medical equipment, and other legacy applications using a 10.4-inch SVGA display and compatible CMOS RGB electronics. The supplied product page identifies the unit as refurbished and provides a 3-month warranty.

Key Features

·        Sharp LQ104S1DG21 TFT-LCD module

·        10.4-inch diagonal display

·        800 × 600 SVGA resolution

·        96 PPI pixel density

·        a-Si TFT-LCD technology

·        TN, Normally White, Transmissive display mode

·        4:3 aspect ratio

·        350 cd/m² typical luminance

·        300:1 typical contrast ratio

·        262K display colors

·        211.2 × 158.4 mm active area

·        Antiglare surface treatment

·        3H hard coating

·        Antireflection treatment

·        CMOS digital RGB interface

·        1-channel, 6-bit configuration

·        41-pin connector

·        3.3V/5.0V typical VCC

·        Two CCFL backlight tubes

·        50,000-hour specified backlight life

·        Backlight driver/inverter not built into the module

·        -10°C to 65°C operating temperature

·        -30°C to 70°C storage temperature

·        Refurbished condition

·        3-month warranty

Technical Specifications

The specifications above are based primarily on the supplied product page and the Sharp technical datasheet.

10.4 Inch 800 × 600 SVGA Display

The Sharp LQ104S1DG21 features a 10.4-inch diagonal display with an 800 × 600 SVGA resolution. The panel provides an active area of 211.2 × 158.4 mm and uses a traditional 4:3 display format.

With approximately 96 pixels per inch, the display is suited to interfaces containing machine parameters, numerical values, menus, status indicators, graphical controls, measurement data, and other industrial operating information.

The 800 × 600 format is commonly found in legacy industrial computers and control equipment. When replacing an existing LCD, however, the screen size and resolution should not be treated as sufficient proof of compatibility. The active area, outline dimensions, mounting arrangement, connector, pinout, interface, voltage, backlight and controller requirements must also be compared.

Display Technology

The LQ104S1DG21 uses amorphous silicon TFT-LCD technology with a TN, Normally White, Transmissive display mode. TFT technology enables individual pixels to be controlled to produce text, graphics, images, measurement values, and control interfaces.

The Normally White transmissive configuration means the display relies on its backlight for illumination. The TN panel design also gives the module viewing characteristics that can differ substantially from modern IPS-based displays.

The panel supports 262K colors and uses an RGB vertical stripe pixel arrangement.

Brightness and Contrast

The LQ104S1DG21 has a typical luminance of 350 cd/m² and a typical contrast ratio of 300:1. These specifications describe the panel's light output and its ability to distinguish between bright and dark areas of an image.

The panel has a specified viewing angle of 70° left, 70° right, 40° up, and 70° down under the stated CR ≥ 10 measurement condition. Its optimum viewing direction is specified as 6 o'clock in the Sharp datasheet.

The display surface uses antiglare treatment along with 3H hard coating and antireflection treatment. These characteristics can be useful in industrial environments where reflections and routine handling are considerations.

Interface and Connector

The Sharp LQ104S1DG21 uses a CMOS digital RGB interface with a 1-channel, 6-bit signal configuration. The panel has a 41-pin interface connector. The Sharp datasheet identifies compatible connector families including Hirose DF9-series 41-pin connectors.

The panel's typical VCC supply is specified as 3.3V/5.0V. The actual supply requirements and signal configuration must be checked against the target equipment before installation.

A 41-pin connector does not by itself guarantee that another 41-pin LCD will be compatible. The connector pinout, RGB data arrangement, timing signals, voltage requirements, connector orientation, and controller electronics must all be verified.

This is particularly important when replacing LCDs in older industrial equipment because displays with similar connectors can have different electrical pin assignments.

Backlight

The LQ104S1DG21 uses two CCFL backlight tubes. The specified backlight life is 50,000 hours. The Sharp datasheet states that the backlight-driving DC/AC inverter is not built into the module, meaning appropriate external backlight drive circuitry is required.

The CCFL system is an important consideration when replacing this panel in legacy equipment. The existing inverter should be checked for compatibility with the replacement backlight requirements.

An LED-backlit LCD should not be assumed to be a direct replacement for a CCFL panel simply because the screen dimensions and resolution are similar.

Mechanical Dimensions

The LQ104S1DG21 has an active area of 211.2 × 158.4 mm. Its overall dimensions are approximately 246.5 × 179.4 × 15.5 mm, excluding backlight cables according to the Sharp documentation. The maximum specified mass is 620 g.

These measurements are important for replacement applications because the available space inside an industrial enclosure may be limited.

Before ordering a replacement, compare the original LCD's active area, overall width and height, thickness, mounting holes, mounting position, connector location, and cable clearance. Two 10.4-inch panels can have different mechanical dimensions even when they share the same 800 × 600 resolution.

Operating Temperature

The Sharp LQ104S1DG21 is specified for an operating temperature range of -10°C to 65°C and a storage temperature range of -30°C to 70°C. The supplied product page also specifies a maximum vibration level of 1.0G, equivalent to approximately 9.8 m/s².

These specifications should be considered together with the environmental requirements of the complete equipment. The controller, backlight inverter, enclosure, cables, and other components may have different operating limits.

Industrial Applications

The LQ104S1DG21 is designed around a 10.4-inch SVGA industrial display format and is relevant to equipment using compatible CMOS RGB display electronics.

Typical applications include:

·        Industrial PCs

·        HMI systems

·        CNC machine interfaces

·        Industrial automation equipment

·        Machine control panels

·        Process control systems

·        Instrumentation equipment

·        Industrial monitoring systems

·        Medical equipment

·        Embedded control systems

·        Factory automation equipment

·        Legacy industrial machinery

The actual application suitability depends on the electrical, mechanical, environmental, and backlight requirements of the equipment.

Compatibility and Replacement Note

The Sharp LQ104S1DG21 should be selected as a replacement only after comparing the complete specifications with the original LCD.

Before purchasing or installing the panel, verify:

·        Exact original LCD model and suffix

·        10.4-inch screen size

·        800 × 600 resolution

·        Active display area

·        Overall dimensions

·        Panel thickness

·        Mounting holes and mounting arrangement

·        Connector type

·        41-pin connector configuration

·        Complete connector pinout

·        CMOS RGB interface

·        1-channel, 6-bit signal configuration

·        LCD supply voltage

·        Display timing requirements

·        CCFL backlight configuration

·        Backlight inverter/driver requirements

·        Controller compatibility

·        Operating temperature requirements

·        Mechanical clearance inside the equipment

A similar screen size, resolution, or connector count does not automatically mean that another LCD is a direct replacement.

Connector type alone is not sufficient to establish compatibility. For a legacy LCD replacement, the exact model number and suffix should first be compared with the original panel. The electrical interface, pinout, voltage, backlight system, mounting arrangement, dimensions, and controller compatibility should then be verified.

The Sharp data documentation also lists the LQ104S1DG21 as a module incorporating its own TFT-LCD panel, driver ICs, control circuitry, power supply circuitry, and backlight unit.

Product Details

Product: Sharp LQ104S1DG21 LCD Module
Brand: Sharp
Model: LQ104S1DG21
Display Size: 10.4 inches
Resolution: 800 × 600 pixels, SVGA
Panel Type: a-Si TFT-LCD, LCM
Display Type: TFT-LCD
Display Mode: TN, Normally White, Transmissive
Interface: CMOS Digital RGB, 1 channel, 6-bit
Connector: 41-pin
Brightness: 350 cd/m² typical
Contrast Ratio: 300:1 typical
Supply Voltage: 3.3V/5.0V typical VCC
Backlight: 2 × CCFL
Backlight Life: 50,000 hours
Operating Temperature: -10°C to 65°C
Storage Temperature: -30°C to 70°C
Touch Screen: No touchscreen specified
Condition: Refurbished
Warranty: 3 months

Handling and Installation Precautions

The LQ104S1DG21 contains delicate LCD glass and a front polarizer that can be damaged through pressure, scratches, moisture, or improper handling.

·        Avoid applying pressure directly to the LCD glass.

·        Do not scratch the front polarizer.

·        Keep sharp objects away from the display surface.

·        Power off the equipment before connecting or disconnecting the LCD.

·        Handle the 41-pin signal connector carefully.

·        Do not rotate or tilt the connector during insertion or removal.

·        Verify the complete pinout before applying power.

·        Confirm the required LCD supply voltage before installation.

·        Use the appropriate external CCFL inverter or backlight driver.

·        Follow suitable ESD precautions when handling the module.

·        Keep water and moisture away from the display.

·        Wipe away water drops immediately to prevent possible discoloration or spots.

·        Avoid dropping or striking the panel against hard surfaces.

·        Do not open, modify, or disassemble the module unnecessarily.

·        Allow adequate clearance for connectors, cables, and backlight connections.

·        Confirm that the equipment's operating environment falls within the panel's specified temperature range.

Frequently Asked Questions

What is the Sharp LQ104S1DG21?

The Sharp LQ104S1DG21 is a 10.4-inch a-Si TFT-LCD module with an 800 × 600 SVGA resolution, TN Normally White display mode, CMOS digital RGB interface, and CCFL backlight.

What is the resolution of the LQ104S1DG21?

The LQ104S1DG21 has an 800 × 600 pixel SVGA resolution.

What is the screen size?

The Sharp LQ104S1DG21 has a 10.4-inch diagonal display.

What type of display is the LQ104S1DG21?

It is an a-Si TFT-LCD module using TN, Normally White, Transmissive display technology.

What is the brightness of the LQ104S1DG21?

The typical luminance is 350 cd/m².

What is the contrast ratio?

The LQ104S1DG21 has a typical contrast ratio of 300:1.

What interface does the LQ104S1DG21 use?

The display uses a CMOS digital RGB interface with a 1-channel, 6-bit configuration.

How many pins does the LQ104S1DG21 connector have?

The LQ104S1DG21 uses a 41-pin interface connector. The connector pin count alone should not be used to establish compatibility because the complete pinout and electrical interface must also match.

What type of backlight does the LQ104S1DG21 use?

The panel uses two CCFL backlight tubes with a specified life of 50,000 hours. The backlight-driving inverter is not built into the LCD module and requires appropriate external circuitry.

Does the LQ104S1DG21 have a touchscreen?

No touchscreen is specified for this LCD module. The supplied product page identifies it as a display module without a touch screen.

What are the dimensions of the LQ104S1DG21?

The active display area is 211.2 × 158.4 mm, while the overall dimensions are approximately 246.5 × 179.4 × 15.5 mm.

What is the operating temperature of the LQ104S1DG21?

The specified operating temperature range is -10°C to 65°C, while the storage temperature range is -30°C to 70°C.

Can the LQ104S1DG21 be used as a replacement LCD?

It can be used as a replacement where the target equipment is designed for the same or compatible LCD specifications. Before installation, verify the exact model and suffix, dimensions, mounting, connector pinout, CMOS RGB interface, supply voltage, display timing, CCFL backlight requirements, and controller compatibility. A similar 10.4-inch size or 41-pin connector does not automatically guarantee direct compatibility.