LS1040I01-L-V1: 10.4-Inch XGA TFT LCD Module, 1024×768 Resolution, LVDS Interface, 256K/16.7M Colors
Product Subtitle / Keywords
10.4 Inch Display, 1024×768 XGA Resolution, 1024 x RGB x 768 Number of Dots, Transmissive a-Si TFT-LCD Module, FPC+PCBA Module Type, 256K/16.7M Display Colors, LVDS Interface, Supply Voltage VDD=3.3V (Typ), Backlight Voltage LED_VCCS=12V (Typ), Backlight Current ILED=0.52A (Typ), Luminance 600 cd/m² (Typ), Contrast Ratio 1000:1 (Typ), Viewing Angle CR≥10 @ 80°/80°/80°/80° (Typ), Operating Temperature -30°C to +85°C, Storage Temperature -30°C to +85°C, Product Spec Revision 1.0, Lesson Smart Display Technology Co., Ltd.
1. Executive Summary & Product Positioning
The LS1040I01-L-V1, developed by Lesson Smart Display Technology Co., Ltd. (立信(万安)智显科技有限公司), is a transmissive type color active matrix liquid crystal display (LCD), which uses amorphous thin film transistor (TFT) as switching devices. This panel has a 10.4 inches diagonally measured active display area with resolution 1024 x 768. This product is composed of a TFT LCD panel, polarizers, driver ICs, FPC and PCBA.
This product specification (Revision 1.0) serves as the definitive technical document, defining the module's general description (including a 10.4-inch diagonal display with XGA resolution), general specifications (including active area, pixel pitch, color numbers, outline dimension, NTSC, viewing angle, contrast ratio, response time, and operating/storage temperatures), pin description for the 30-pin LVDS connector and the 5-pin backlight connector, absolute maximum ratings, DC characteristics (including power supply voltages and input logic levels), LVDS electrical characteristics, data timing parameters (DCLK, HSD, VSD), and optical characteristics.
The document provides the core parameters necessary for system integration into standard 10.4-inch industrial and commercial display applications. The unequivocal recommendation for engineers is to strictly adhere to the electrical specifications (especially the power supply voltage VDD=3.3V, the backlight driving at 12V with a PWM signal, and the LVDS interface characteristics) described herein to ensure reliable performance and compatibility.
2. Detailed Product Overview & Architecture
- Core Technology: Transmissive type color active matrix liquid crystal display (LCD) which uses amorphous thin film transistor (TFT) as switching devices. It is composed of a TFT LCD panel, polarizers, driver ICs, FPC and PCBA.
- Display Resolution: XGA: 1024 × 768 pixels (number of dots 1024 × RGB × 768).
- Display Colors: This panel can display up to 256K / 16.7M colors.
- Module Construction: FPC+PCBA (Flexible Printed Circuit + Printed Circuit Board Assembly). The module has three connectors on the PCBA: CN1 (30-pin input LVDS connector), CN2 (5-pin input BL power connector), and CN3 (not described in detail).
- Interface Type: LVDS (Low Voltage Differential Signaling) interface, using 4 differential data pairs (Rin0±, Rin1±, Rin2±, Rin3±) and 1 differential clock pair (CLK±). It supports both 6-bit and 8-bit data input, selectable via the SEL6/8 pin.
- Power Architecture: Requires separate power supplies for the logic (VDD = 3.3V) and the backlight (LED_VCCS = 12V).
- Backlight: White LED backlight driven by an external converter IC, controlled via LED_EN (Enable) and LED_PWM (PWM dimming) signals.
3. Exhaustive Technical Specifications
3.1 Mechanical & Physical Specifications
| Item | Specification | Unit |
|---|---|---|
| Module Model | LS1040I01-L-V1 | - |
| Display Size (Diagonal) | 10.4 | inch |
| Display Type | Transmissive, a-Si | - |
| Active Area (HxV) | 210.432 (H) × 157.824 (V) | mm |
| Number of Dots | 1024 × RGB × 768 | dots |
| Pixel Pitch (HxV) | 0.2055 × 0.2055 | mm |
| Color Arrangement | RGB Stripe | - |
| Color Numbers | 256K / 16.7M | - |
| Outline Dimension (HxVxT) | 220.53 (H) × 168.02 (V) × 1.03 (D) | mm |
| NTSC (CIE1931) (Under C light) | 60 (Typ.) | % |
| White Point (x,y) (Under C light) | x:0.318, y:0.366 (Typ.) | - |
| Response Time | ≤ 30 | ms |
| Viewing Angle (Light On) (R/U/L/D) | CR ≥ 10 @ 80°/80°/80°/80° (Typ.) | Deg. |
| Surface Treatment | HC (Hard Coating) | - |
| Contrast Ratio (Light On) | 1000:1 (Typ) | - |
| Interface | LVDS | - |
| Weight | 303 | g |
| Panel power consumption | TBD | W |
| Module Type | FPC+PCBA | - |
| Operating Temperature | -30 ~ +85 | °C |
| Storage Temperature | -30 ~ +85 | °C |
| Supplier | 立信(万安)智显科技有限公司 (Lesson Smart Display Technology Co.,Ltd) | - |
| Document Revision | Revision 1.0 | - |
3.2 Interface & Electrical Specifications
3.2.1 Absolute Maximum Ratings
| Item | Symbol | Min. | Max. | Unit |
|---|---|---|---|---|
| Power Supply Voltage (Logic) | VDD | -0.3 | 3.6 | V |
| Power Supply Voltage (Backlight) | LED_VCCS | -0.3 | 25 | V |
| Storage Temperature | Tstg | -30 | +85 | °C |
| Operating Temperature | Topr | -30 | +85 | °C |
Note: All voltages are with respect to GND=0V. Device is subject to permanent damage if stresses beyond these absolute maximum ratings are applied.
3.2.2 DC Characteristics
| Item | Symbol | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|
| Power voltage (Logic) | VDD | 3.0 | 3.3 | 3.6 | V | - |
| Power voltage (Backlight) | LED_VCCS | 11 | 12 | 13 | V | - |
| Input logic high voltage | V_{IH} | 3.0 | 3.3 | 3.6 | V | 1 |
| Input logic low voltage | V_{IL} | 0 | - | 0.5 | V | - |
| Current for Power (Logic) | I_{VDD} | - | 250 | - | mA | Vcc=3.3V at 60Hz, all White |
| Current for Power (Backlight) | I_{LED_VCCS} | - | 0.52 | - | A | 100% PWM Duty @ VLED+=33V, ILED=80mA*2 |
| LED_EN Control Level (BL On) | - | 3.0 | - | 5 | V | - |
| LED_EN Control Level (BL Off) | - | 0 | - | 0.3 | V | - |
| LED_PWM Control Level (PWM High Level) | - | 3.0 | - | 5 | V | - |
| LED_PWM Control Level (PWM Low Level) | - | 0 | - | 0.3 | V | - |
| LED_PWM Control Frequency | f_{PWM} | 1K | - | 20K | Hz | 2 |
Note 1: This specification is for the logic control signals (LED control and similar). The LVDS differential signals have their own specifications (see Section 6.3).
Note 2: The PWM frequency range for the backlight dimming is 1kHz to 20kHz.
3.2.3 LVDS DC Electrical Characteristics
| Parameter | Symbol | Min. | Typ. | Max. | Unit | Remark |
|---|---|---|---|---|---|---|
| Differential input high Threshold voltage | RxVTH | - | - | +100 | mV | RxVCM=1.2V |
| Differential input low threshold voltage | RxVTL | -100 | - | - | mV | RxVCM=1.2V |
| Input Voltage range (Single-ended) | RxVIN | 0 | - | VDD - 1.2 + |VID|/2 | V | - |
| LVDS Differential input common mode voltage | RxVCM | |VID|/2 | - | VDD - 1.2 | V | - |
| LVDS Differential voltage | VID | 0.2 | - | 0.6 | V | - |
3.3 Connector and Pin Description
3.3.1 Connector 1 (CN1): LVDS Interface (30-pin, P-two 187098-30091)
Recommended mating plug: P-two 187130-30xx or JAE FI-X30H.
| No | Symbol | I/O | Function | Remark |
|---|---|---|---|---|
| 1 | NC | I | Reserved as BIST function for INX test | Keep floating |
| 2 | GND | P | Ground | - |
| 3 | Rin3+ | I | Positive LVDS differential data input (+) | - |
| 4 | Rin3- | I | Negative LVDS differential data input (-) | - |
| 5 | GND | P | Ground | - |
| 6 | CLK+ | I | Clock signal (+) | - |
| 7 | CLK- | I | Clock signal (-) | - |
| 8 | GND | P | Ground | - |
| 9 | Rin2+ | I | Positive LVDS differential data input (+) | - |
| 10 | Rin2- | I | Negative LVDS differential data input (-) | - |
| 11 | GND | P | Ground | - |
| 12 | Rin1+ | I | Positive LVDS differential data input (+) | - |
| 13 | Rin1- | I | Negative LVDS differential data input (-) | - |
| 14 | GND | P | Ground | - |
| 15 | Rin0+ | I | Positive LVDS differential data input (+) | - |
| 16 | Rin0- | I | Negative LVDS differential data input (-) | - |
| 17 | GND | P | Ground | - |
| 18 | NC | - | No Connection | - |
| 19 | GND | P | Ground | - |
| 20 | SEL6/8 | I | Selection for 6 bits/8bit LVDS data input | Low or NC: 8-bit; High: 6-bit |
| 21 | NC | I | Reserved as EE_WP for OTP function | Keep floating |
| 22 | NC | I | Reserved as EE_SDA for OTP function | Keep floating |
| 23 | NC | I | Reserved as EE_SCL for OTP function | Keep floating |
| 24 | Reverse | I | Reverse panel function (Display rotation) | - |
| 25, 26, 27 | GND | P | Ground | - |
| 28, 29, 30 | VDD | P | Power supply: +3.3V | - |
3.3.2 Connector 2 (CN2): Backlight Power and Control (5-pin, Cillux CI4205M2HRD-NH)
| No | Symbol | I/O | Function |
|---|---|---|---|
| 1, 2 | LED_VCCS | P | 12V input power for backlight converter |
| 3 | GND | P | Ground |
| 4 | LED_PWM | I | PWM dimming control signal |
| 5 | LED_EN | I | Converter power IC enable (Active High) |
3.4 Timing Characteristics (Data Timing)
| Parameter | Symbol | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|---|
| DCLK frequency | fclk | 52 | 65 | 71 | 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 | 768 | 768 | 768 | TH |
| VSD period | tv | 778 | 806 | 845 | TH |
| VSD blanking | tvbp+tvfp | 10 | 38 | 77 | TH |
3.5 Optical Characteristics
| Item | Symbol | Condition | Min. | Typ. | Max. | Unit | Note |
|---|---|---|---|---|---|---|---|
| Color gamut | C.G | θx=0°, θy=0°, R=G=B=255 | 55 | 61.2 | - | % | C Light Source (1),(5),(6),(7),(8) |
| Luminance | L | θx=0°, θy=0°, R=G=B=255 | 500 | 600 | - | cd/m² | (1),(4),(6) |
| LED Life Time | - | θx=0°, θy=0°, R=G=B=255 | 35000 | 50000 | - | hours | - |
| Contrast Ratio | CR | θx=0°, θy=0°, R=G=B=255 | 800 | 1000 | - | - | (2) |
| Response Time | T_R + T_F | θx=0°, θy=0° | - | 25 | 35 | ms | (3),(6) |
| Viewing Angle (Horizontal x+) | θx + | CR ≥ 10 | 75 | 80 | - | Deg. | (1),(5),(6) |
| Viewing Angle (Horizontal x-) | θx - | CR ≥ 10 | 75 | 80 | - | Deg. | (1),(5),(6) |
| Viewing Angle (Vertical y+) | θy + | CR ≥ 10 | 75 | 80 | - | Deg. | (1),(5),(6) |
| Viewing Angle (Vertical y-) | θy - | CR ≥ 10 | 75 | 80 | - | Deg. | (1),(5),(6) |
Notes on Optical Measurements (from the specification):
- (2) Definition of Contrast Ratio (CR): CR = L255 / L0, where L255 is the luminance of gray level 255 (white) and L0 is the luminance of gray level 0 (black).
- (3) Definition of Response Time: Rise time (Tr) is the time between photo detector output intensity changing from 10% to 90%. Fall time (Tf) is the time between photo detector output intensity changing from 90% to 10%. Total response time is Tr + Tf.
- (4) Definition of Luminance of White (Lc): Measured at the center point of the display with gray level 255.
3.6 Reliability Test Conditions (From Section 8)
| No. | Test Items | Test Condition |
|---|---|---|
| 1 | High Temperature Storage | 85°C, 240hrs |
| 2 | Low Temperature Storage | -30°C, 240hrs |
| 3 | High Temperature Operation | 85°C, 240hrs |
| 4 | Low Temperature Operation | -30°C, 240hrs |
| 5 | High Temperature and High Humidity Storage | 60°C, 90%RH, 240hrs |
| 6 | Thermal Shock | -30°C/0.5h ~ +80°C/0.5h for 100 cycles |
| 7 | Electro Static Discharge | C=150pF, R=330Ω, 5point/panel, Air: ±4Kv, 5 times |
| 8 | Package Drop Test | ISTA(1A): 0-10kg: 76cm, 10-19kg: 61cm, 19-28kg: 46cm, 28-45kg: 31cm, 45-68kg: 20cm |
4. Application Guidelines & Critical Notes
Intended Use
- Standard 10.4-inch industrial, commercial, and embedded display applications.
- Systems requiring an XGA (1024×768) resolution display with a standard single-channel LVDS interface.
- Applications needing a wide operating temperature range (-30°C to +85°C) for industrial or outdoor environments.
Critical Design Considerations
- Single-Channel LVDS Interface (4 Data Pairs + Clock): The module uses a standard single-channel LVDS interface. The host's LVDS transmitter must support this configuration. The pixel clock frequency is 65MHz (Typ), with a range of 52-71MHz. The timing parameters (thd, tv, etc.) must be strictly followed to ensure the display works correctly.
- 6-bit / 8-bit Selection (SEL6/8 Pin): The SEL6/8 pin (Pin 20) selects between 6-bit and 8-bit LVDS input data. Leave it Low or NC (No Connect) for 8-bit mode, and set it High for 6-bit mode. This is a critical configuration that affects the color depth of the display.
- Power Supply (VDD = 3.3V for Logic, LED_VCCS = 12V for Backlight): The logic power supply (VDD) is a single 3.3V rail with a typical current of 250mA. The backlight power (LED_VCCS) is a separate 12V rail (Typ) with a typical current of 0.52A. The module uses an external backlight converter IC powered by LED_VCCS. The control signals for this converter are LED_EN (enable, active high) and LED_PWM (PWM dimming, 1kHz-20kHz).
- External Backlight Converter Circuit Required: The module provides a bare LED string (80mA per string × 2 = 160mA total) that is driven by an external converter IC. The DC characteristics show the converter is powered by LED_VCCS (12V) and produces an output of VLED+=33V. This means an external boost-type LED driver IC is required that can generate 33V @ 80mA per string (2 strings = 160mA total). The LED_EN and LED_PWM signals control this external converter.
- Display Rotation (Reverse Pin): Pin 24 (Reverse) controls the display scanning direction. This can be used to mount the display in different orientations (e.g., portrait or landscape without changing the software). The exact logic levels for this pin should be determined from the full specification's timing diagram (Section 6.4).
- OTP (One-Time Programmable) Function Pins: Pins 21-23 are reserved for the OTP function (EE_WP, EE_SDA, EE_SCL). They must be left floating (no connection) and should not be connected to any signals or grounds. These are intended for factory calibration only.
- Wide Operating Temperature Range (-30°C to +85°C): The module supports an extremely wide operating temperature range, making it suitable for harsh industrial environments, automotive (non-critical), and outdoor displays. However, designers must ensure the entire system (backlight driver, host processor) can also operate within this range.
- Mechanical Integration (FPC+PCBA Design): The module is supplied as an FPC+PCBA assembly, which means the control PCB is pre-attached. The outline dimension is 220.53mm (W) × 168.02mm (H) × 1.03mm (D) (very thin!). The module weight is 303g. The designed connectors are P-two 187098-30091 (CN1, LVDS) and Cillux CI4205M2HRD-NH (CN2, Backlight). Ensure the mechanical mounting accommodates the connector locations and the FPC routing.
- Multiple Ground Pins: The LVDS connector has multiple GND pins (5, 8, 11, 14, 17, 19, 25-27). All must be connected to the system ground to ensure proper signal integrity and reduce EMI.
- BIST (Built-In Self-Test) Function: Pin 1 is reserved for the BIST function. Do not connect any signal to this pin — keep it floating. The BIST mode is used for factory testing.
Handling & Compliance
- Observe standard ESD precautions during handling and assembly.
- The module contains fragile glass – handle with care. Avoid mechanical stress on the active area.
- Do not attempt to disassemble or modify the LCD module.
- All NC (No Connection) pins and reserved pins (1, 21-23) should be left open.
- The module meets the reliability tests specified (high/low temp, humidity, thermal shock, ESD, drop) but these are for the module itself. System-level testing is the responsibility of the integrator.
5. Conclusion & Design-In Support
The LS1040I01-L-V1 specification details a durable, standard 10.4-inch XGA (1024×768) TFT LCD module with a single-channel LVDS interface, extremely wide operating temperature range (-30°C to +85°C), and robust optical performance (600 cd/m², 1000:1 contrast ratio, 80°/80°/80°/80° viewing angle) — an ideal choice for industrial and outdoor applications requiring high reliability.
Key Strengths
- XGA Resolution (1024×768) with 4:3 Aspect Ratio: A classic, widely-supported resolution for industrial HMIs, medical equipment, and legacy systems.
- Extremely Wide Temperature Range (-30°C to +85°C): Suitable for demanding environments, including automotive, outdoor, and factory floor.
- Standard Single-Channel LVDS Interface: Easy to interface with a wide range of processors and FPGAs without complex high-speed serial design.
- Excellent Optical Performance: High brightness (600 cd/m²), high contrast (1000:1), wide viewing angles (80° in all directions), and reasonable response time (25ms).
- Detailed Timing and Pinout Information: Comprehensive timing parameters and clear pin assignments facilitate straightforward system integration.
- Flexible Display Rotation: The Reverse pin provides hardware-level display orientation control.
Main Design Focus
- The critical design tasks are providing a clean 3.3V power supply (250mA) for the logic, and a separate 12V supply (0.52A) for the external backlight converter, implementing the standard single-channel LVDS interface with a 65MHz pixel clock and correct 6-bit/8-bit selection (SEL6/8), and designing an external boost-type constant-current LED driver (33V @ 80mA per string, 2 strings) with enable (LED_EN) and PWM dimming (LED_PWM) control.
- Supporting requirements: All ground pins must be connected. Reserved pins (1, 21-23) must be left floating. Connect the Reverse pin for display rotation control if needed. Ensure the mechanical design accommodates the 220.53mm × 168.02mm module outline and the recommended connectors.
This module is a robust and well-documented choice for engineers designing industrial 10.4-inch display systems that demand reliability, wide temperature performance, and a standard LVDS interface.
