LS070I14-R-V1: 7.0-Inch TFT LCD Module, 1024×600 Resolution, 24-bit RGB Interface, 16.7M Colors, Transmissive
Product Subtitle / Keywords
7.0 Inch Display, 1024×600 Resolution, TFT-LCD Module, 24-bit RGB Interface, Transmissive, Display Colors 16.7M, Built-in Source Driver (1536 channels) and Gate Driver (1200 channels), White LED Backlight, -20°C to +85°C Operating Temperature, VCOM Voltage 3.3V, DVDD Voltage 3.3V, AVDD Voltage 9.6V, VGH Voltage 18V, VGL Voltage -6V, 50-pin Connector, Lesson Smart Dispaly Technology Co.,Ltd, 2015-01-23 Released
1. Executive Summary & Product Positioning
The LS070I14-R-V1, developed by Lesson Smart Dispaly Technology Co., Ltd. (立信(万安)智显科技有限公司), is a 7.0-inch TFT-LCD (Thin Film Transistor Liquid Crystal Display) module.
This product specification (Version 01, dated 2015-01-23) serves as the definitive technical document, defining its general description, mechanical specifications, outline dimensions, interface assignment, timing characteristics, power on/off sequence, DC electrical characteristics, LED backlight characteristics, optical characteristics, reliability condition, inspection standards, and precaution.
The document provides the core parameters necessary for system integration into embedded display applications requiring a standard 7.0-inch display with a 24-bit parallel RGB interface. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications, interface timing, and mechanical tolerances described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview & Architecture
- Core Technology: Transmissive type TFT-LCD (Thin Film Transistor Liquid Crystal Display) module, which is composed of a TFT panel, a source driver, and a gate driver.
- Display Format: Graphic 1024 × 3RGB × 600 dots matrix (WSVGA resolution).
- Module Construction: COG+FPC+BL (Chip-On-Glass + Flexible Printed Circuit + Backlight).
- Interface Type: 24 bit RGB interface (Parallel).
- Driver: Built-in 1536-channel source driver and 1200-channel gate driver.
- Backlight: White LED Backlight.
- Display Colors: 16.7M.
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Item | Contents | UNIT |
| LCD Type | 7.0" TFT-LCD, Transmissive | -- |
| Outline Dimension | 100(W) x 164.8(H) x 5.5(T) | mm |
| Active Area | 85.92(W) x 154.21(H) | mm |
| Number of Dots | 1024(RGB)x600 | Dots |
| Dot Pitch (H×V) | 0.1506(W) (RGB)x 0.1432(H) | mm |
| Viewing direction | ALL | -- |
| Assy Type | COG+FPC+BL | -- |
| BACKLIGHT | WHITE LED Backlight | -- |
| Interface | 24 bit RGB interface | -- |
| Display Color | 16.7M | -- |
| WEIGHT | TBD | g |
3.2 Electrical & Interface Specifications
3.2.1 Pin Description (50-pin Connector)
The module uses a 50-pin interface with a 24-bit RGB configuration including backlight and power control pins.
| PIN NO. | SYMBOL | Description |
|---|---|---|
| 1, 2 | LED+ | Power for LED backlight (Anode) |
| 3, 4 | LED- | Power for LED backlight (Cathode) |
| 5 | GND | Power ground |
| 6 | VCOM | Common voltage (3.3) |
| 7 | DVDD | Power for Digital Circuit (3.3) |
| 8 | MODE | DE/SYNC mode select. MODE=H:DE mode; MODE=L:SYNC mode. |
| 9 | DE | Data input Enable |
| 10 | VS | Vertical Sync Input |
| 11 | HS | Horizontal Sync Input |
| 12~19 | B7~B0 | Blue data |
| 20~27 | G7~G0 | Green data |
| 28~35 | R7~R0 | Red data |
| 36 | GND | Power ground |
| 37 | DCLK | Sample clock |
| 38 | GND | Power ground |
| 39 | L/R | Left / right selection |
| 40 | U/D | Up/down selection |
| 41 | VGH | Gate ON Voltage (18) |
| 42 | VGL | Gate OFF Voltage (-6) |
| 43 | AVDD | Power for Analog Circuit (9.6) |
| 44 | RESET | Global reset pin |
| 45, 49, 50 | NC | No connection |
| 46 | VCOM | Common Voltage (3.3) |
| 47 | DITHB | Dithering function. DITHER = H:Enable internal dithering function; DITHER = L:Disable internal dithering function. |
| 48 | GND | Power ground |
Interface Summary:
- Video Interface: Uses 24-bit RGB parallel interface (R7-R0, G7-G0, B7-B0) with HS, VS, DE, and DCLK control signals.
- Backlight: LED+ (Pins 1, 2) and LED- (Pins 3, 4).
- Power: DVDD (3.3V - Pin 7) for Digital Circuit, AVDD (9.6V - Pin 43) for Analog Circuit, VGH (18V - Pin 41) for Gate ON, VGL (-6V - Pin 42) for Gate OFF. VCOM (3.3V - Pins 6, 46).
- Control: MODE (Pin 8) for DE or SYNC mode selection, L/R (Pin 39) and U/D (Pin 40) for display orientation, RESET (Pin 44) for hardware reset, DITHB (Pin 47) for dithering function.
3.2.2 Timing Characteristics (DE mode, 1024x600)
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| DCLK Frequency | fclk | 40.8 | 51.2 | 67.2 | MHz |
| Horizontal Display Area | thd | 1024 | 1024 | 1024 | DCLK |
| HSD Period | th | 1114 | 1344 | 1400 | DCLK |
| HSD Blanking | thb+ thfp | 90 | 320 | 376 | DCLK |
| Vertical Display Area | tvd | 600 | 600 | 600 | $T_{H}$ |
| VSD Period | tv | 610 | 635 | 800 | $T_{H}$ |
| VSD Blanking | tvbp+ tvfp | 10 | 35 | 200 | $T_{H}$ |
3.2.3 Backlight Characteristics
The backlight consists of 42 LEDs (3 series * 14 parallel).
| PARAMETER | SYMBOL | CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| LED module Forward voltage | VF | VF=300mA | 9.0 | 9.6 | 10.2 | V |
| Surface Luminance | LV | VF=300mA | 700 | 800 | -- | cd/m2 |
| Uniformity | LD | VF=300mA | 80 | -- | -- | % |
3.3 Optical Characteristics
| ITEM | SYMBOL | CONDITION | MIN. | TYP. | MAX. | UNIT |
|---|---|---|---|---|---|---|
| Transmittance | T | 3.8 | 4.1 | -- | % | |
| Contrast Ratio | CR | 600 | 800 | -- | -- | |
| Response Time (Tr+Tf) | - | 25 | 40 | ms | ||
| NTSC | 45% | 50% | -- | |||
| Viewing Angle (L/R/U/D) | CR≥10 | 80 | 85 | -- | Deg. |
4. Application Guidelines & Critical Notes
Intended Use
- Industrial control panels and human-machine interfaces (HMIs).
- Embedded systems requiring a standard 7.0-inch display with a 24-bit RGB interface.
Critical Design Considerations
- Interface (24-bit RGB): This module uses a 24-bit parallel RGB interface (R7-R0, G7-G0, B7-B0). The host controller must provide the correct timing for these signals. Note that Pin 8 (MODE) selects between DE mode and SYNC mode.
- Power Supply: Provide stable voltages: DVDD (3.3V) for Digital Circuit, AVDD (9.6V Typ) for Analog Circuit, VGH (18V Typ) for Gate ON, and VGL (-6V Typ) for Gate OFF. The backlight requires a constant-current LED driver connected to the LED+ and LED- pins.
- Display Orientation Control: Pins L/R (Pin 39) and U/D (Pin 40) allow for flexible display orientation. When L/R='0', set right to left scan direction. When L/R='1', set left to right scan direction. When U/D='0', set top to bottom scan direction. When U/D='1', set bottom to top scan direction.
- Operating Mode Setting: Select DE mode (High) or SYNC mode (Low) via Pin 8 (MODE).
- Reset: Pin 44 (RESET) is a global reset pin, active low.
- Dithering Function: Pin 47 (DITHB) controls the enable (High) or disable (Low) of the internal dithering function.
- Temperature Limits: Operating Temperature: -20°C to +85°C (from electrical characteristics section). Storage Temperature: -30°C to +80°C (from outline drawing).
- Power Sequence: Follow the power on/off sequence described in Section 6 of the specification to prevent damage to the device.
- Precautions: Do not apply input signals when logic circuit power is off. NC pins should be left open. Handle with ESD precautions. Refrain from strong mechanical shock or force. Do not press or scratch the polarizer surface harder than a B pencil lead.
Handling & Compliance
- The module is RoHS compliant.
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass and FPC – handle with care.
- Avoid bending the FPC sharply, especially near the connector interface.
- Do not attempt to disassemble or process the LCD module.
- Desirable cleaners are water, IPA (Isopropyl Alcohol) or Hexane. Do not use Ketone type materials (ex. Acetone), Ethyl alcohol, Toluene, Ethyl acid or Methyl chloride.
5. Conclusion & Design-In Support
The LS070I14-R-V1 specification details a standard 7.0-inch WSVGA display module with a 24-bit parallel RGB interface, all-direction viewing, high brightness (800 cd/m² Typ) and comprehensive safety guidelines — an excellent choice for applications requiring a mature and reliable 7.0-inch display with a straightforward interface.
Key Strengths
- WSVGA Resolution (1024×600): Provides adequate image quality for a 7.0-inch display.
- 24-bit RGB Parallel Interface: Standard, easy-to-use parallel interface with wide support.
- High Brightness: Typical 800 cd/m² suitable for various indoor applications.
- ALL Viewing Direction: Provides wide viewing angles.
- Wide Operating Temperature Range: -20°C to +85°C suitable for industrial environments.
- Flexible Orientation Control: Via L/R and U/D pins for versatile mounting.
- 16.7M Colors: Offers rich color display capability.
- RoHS Compliant: Environmentally friendly design.
Main Design Focus
- The critical design task is properly configuring the 24-bit parallel RGB interface on the host processor to drive the 1024×600 resolution at a DCLK frequency of 40.8~67.2 MHz (Typ 51.2 MHz).
- Supporting requirements: Provide stable DVDD (3.3V), AVDD (9.6V Typ), VGH (18V Typ), and VGL (-6V Typ) power supplies. Provide a constant-current LED backlight driver. Follow the correct power sequencing and ESD precautions.
This module is an excellent choice for industrial control panels, HMIs, and any embedded system requiring a standard 7.0-inch display with a direct parallel RGB interface.
