TIANMA NL8060BC21-11KG Industrial LCD

TIANMA NL8060BC21-11KG Industrial LCD

Introduction: When industrial equipment encounters the dilemma of LCD shutdown

In the fields of industrial automation, medical equipment, in car navigation (non safety control), ship displays, and aviation seat entertainment systems, TFT-LCD liquid crystal modules are crucial human-machine interaction components. However, electronic components iterate rapidly, and many previously stable LCD models may face the risk of being redesigned or even scrapped due to factory shutdown (EOL). Engineers often need to find an alternative screen that is compatible with electrical, mechanical, and optical characteristics, while also meeting demanding requirements such as touch functionality, backlight lifespan, and wide temperature range.

The NL8060BC21-11KG launched by Tianma Japan (TMJ) is an industrial grade TFT color LCD module with a 21 cm (8.4 inch) SVGA resolution. It adopts a single port LVDS interface, integrates second-generation projected capacitive touch screen (PCAP) and replaceable LED backlight, designed specifically for devices that require long-term stable operation in harsh environments. This article will provide a detailed analysis of the technical specifications, interface definitions, timing requirements, optical characteristics, reliability testing, and installation precautions of the module from an engineering practical perspective. It will also provide a guide for replacing old or discontinued screens, helping hardware engineers and maintenance personnel efficiently complete screen upgrades and troubleshooting.

Product Overview and Core Features

2.1 Basic positioning

NL8060BC21-11KG is a Tianma industrial grade standard product (quality level "Standard"), suitable for general electronic equipment and industrial applications, such as testing and measuring instruments, communication equipment, industrial control human-machine interfaces, car navigation (without vehicle control functions), aviation seat entertainment screens, etc. It is not designed for special levels such as aerospace, nuclear control systems, or life support equipment, thus achieving a good balance between cost and reliability.

2.2 Key Characteristics Overview

Display size: 8.4 inches (diagonal), display area 170.4 mm × 127.8 mm

Resolution: 800 × 600 (SVGA)

Pixel arrangement: RGB vertical stripes, dot pitch 0.071 mm × 0.213 mm, pixel pitch 0.213 mm

Interface: LVDS 1 port (receiver THC63LVDF84B or compatible)

Color support: 16777216 colors (8-bit input) or 262144 colors (6-bit input)

Brightness: Typical value 750 cd/m ² (LED current 50 mA/channel)

Contrast ratio: typical value 800:1

Perspective: 80 degrees up, down, left, and right (CR ≥ 10)

Response time: Ton+Off, typical 18 ms

Touch screen: Projection Capacitive (PCAP), second-generation, with 0.7mm cover glass, anti reflection treatment, pencil hardness ≥ 2H

Working temperature: -30 ℃~+80 ℃ (front surface and rear shielding surface)

Storage temperature: -30 ℃ to+80 ℃

Module size: 200.0 mm (W) × 152.0 mm (H) × 10.1 mm (D) (including touch screen)

Weight: 370 g (typical)

Backlight: LED, replaceable lamp holder kit (84LHS17), long lifespan

Environmental Protection: Compliant with RoHS (2011/65/EU and 2015/863/EU)

2.3 Unique value-added functions

Reversible scanning direction: Select normal scanning or reverse scanning through the DPS pin to adapt to image display in different installation directions.

8-bit/6-bit color switching: Select full-color or 262k color through the FRC pin, compatible with different host output capabilities.

LVDS mapping optional: The MSL pin can switch between two 8-bit data mapping formats, making it easy to adapt to different LVDS transmitters.

Replaced backlight: The LED lamp holder can be replaced separately, greatly extending the overall service life of the module and reducing maintenance costs.

Optical bonding: The touch screen and LCD adopt optical bonding to reduce reflection and improve visibility.

These features make the NL8060BC21-11KG an ideal choice for replacing old and discontinued industrial LCDs - it retains the compatibility of traditional LVDS interfaces while increasing high brightness and wide temperature adaptability.

Detailed specification interpretation

3.1 Mechanical dimensions and installation

Dimensions: 200.0 ± 0.5 mm (width) × 152.0 ± 0.5 mm (height) × 10.1 ± 0.7 mm (thickness).

Installation hole position: Refer to Outline Drawings (pages 35-36), use M2.5 or similar screws.

Installation torque: Do not exceed 0.230 N · m, otherwise it may cause deformation of the frame.

Screw length: protruding part ≤ 2.0 mm to avoid touching the internal circuit.

FPC operation: When bending FPC, avoid bending at the root or bending too tightly to prevent circuit breakage.

3.2 Absolute maximum rated value

Parameter symbol minimum value maximum value unit note

LCD signal board power supply VCC -0.3+3.96 V

Display signal input voltage VD -0.3 VCC+0.3 V D0 ±, D1 ±, D2 ±, D3 ±, CLK ±

Functional signal voltage VF -0.3 VCC+0.3 V DPS, FRC, MSL

LED forward current (per channel) IL -60 mA

Storage temperature Tst -30+80 ℃

Working temperature (front surface) TopF -30+80 ℃ including self heating

Working temperature (rear shielding surface) TopR -30+80 ℃

Relative humidity (≤ 40 ℃) RH-95% without condensation

Absolute humidity (80 ℃) AH-70 g/m ³ is equivalent to 24% RH

Engineering Tip: If the working environment exceeds the above limits, irreversible damage may occur even in a short period of time. Especially the combination of humidity and temperature - high temperature and humidity can accelerate the aging of polarizing film and the oxidation of touch screen.

3.3 Electrical Characteristics (LCD Signal Board)

Supply voltage VCC: 3.0 V~3.6 V, typical 3.3 V

Operating current ICC: Typical 230 mA (grid pattern), maximum 340 mA (maximum current pattern)

Allowable ripple: ≤ 100 mVp-p (including spike noise)

LVDS differential input threshold: VTH=+100 mV, VTL=-100 mV (common mode voltage 1.2 V)

Terminal resistance: Internally integrated 100 Ω (matching)

Functional signal (DPS/FRC/MSL) level: High ≥ 0.7 × VCC, Low ≤ 0.3 × VCC (CMOS)

Attention: All GND and VCC pins must be connected and not suspended.

3.4 Backlight characteristics

Drive mode: Constant current drive must be used, with a total of 4 parallel LEDs (each with independent cathode/anode pins)

Each forward current IL: typical 50 mA, maximum 55 mA

Each forward voltage VL: typical 21.0 V @ 25 ℃/50 mA

Voltage increase at low temperature of -30 ℃ (maximum 26.2 V @ 55 mA)

Recommended LED driver board: 104PW03F (optional)

Lamp holder kit: 84LHS17 (for replacing backlight)

To prevent uneven brightness, it is recommended to control the current difference between each LED circuit within 5%.

3.5 Touchscreen (PCAP) specifications

Type: Projection capacitor, second generation

Cover glass: 0.7mm ordinary glass, surface anti reflection (AR) treatment

Pencil hardness: ≥ 2H (JIS K5600)

Recommended controller board: PTPW16-084SV1S02 or PTPW17-084SV1S02 (optional)

Connection: FPC (40 pin+60 pin), compatible with socket FH28-40S-0.5SH/FH28-60S-0.5SH

Attention: Touch performance may be affected by the usage environment (screen moisture, glove thickness), and parameters need to be adjusted through the controller board.

Interface definition and signal mapping

4.1 LCD signal board connector CN1

Using JAE FI-SE20P-HFE socket (20 pin), paired with FI-S20S plug. The pin definitions are as follows (only key pins are listed):

Pin symbol function notes

1,2 D3 ± pixel data (MAP A/B) 8-bit or 6-bit

3 DPS scanning direction H: reverse; L/Open: Forward

4 FRC color selection H: 16.7M; L/Open: 262k

5 GND Ground

6,7 CLK ± pixel clock

9,10 D2 ± pixel data/DE

12,13 D1 ± pixel data

15,16 D0 ± pixel data

18 MSL LVDS mapping selection L/Open: MAP A; H: MAP B

19,20 VCC 3.3V power supply must be fully connected

Important note: LVDS differential pairs must use twisted pair cables with a characteristic impedance of 100 Ω and be matched with the transmitter.

4.2 LVDS Data Mapping

NL8060BC21-11KG supports three input combinations (see Data Manual Table 4.7.1):

Combination input data bit FRC MSL display color

① 8-bit MAP A high/low/on 16.7M

② 8-bit MAP B height 16.7m

③ 6 bits low/on low/on 262k

The difference between MAP A and MAP B lies in the allocation of RGB bits and DE (data enable). When actually replacing, it is necessary to confirm the output mapping of the original system LVDS transmitter and select the matching mode through the MSL pin, otherwise color distortion or image shift may occur.

4.3 Backlight connector CN2

Use JST SM08B-SRSS-TB (8 pins), corresponding to socket SHR-08V-S. Pin definition:

1: A1 (anode 1)

2: K1 (cathode 1)

3: A2

4: K2

5: A3

6: K3

7: A4

8: K4

Wiring reminder: The 4-channel LED is independent, and the anode or cathode cannot be connected in parallel at will, otherwise it will cause uneven current. It is recommended to use 4 independent constant current sources or a driver board with current equalization design.

4.4 Touch screen connection CN3/CN4

CN3 (40 pin FPC) and CN4 (60 pin FPC) are respectively connected to the touch screen controller.

The manufacturer recommends using the recommended controller board, otherwise drivers need to be developed and parameters adjusted independently.

Power supply timing and power on requirements

5.1 LCD Signal Board Timing

Before VCC rises to 3.0 V, all display signals (D0 ±~D3 ±, CLK ±) and function signals (DPS, FRC, MSL) must remain in a low or high impedance state.

Only when VCC is stable and effective, can LVDS signals be inputted.

If the display signal is cut off during the working process, even if it is input again, the module may not be able to recover normally. At this time, VCC must be turned off and powered back on at the same time.

Strongly recommend: first connect VCC, then send LVDS signal; Stop the LVDS signal before cutting off VCC during power outage.

5.2 Backlight timing sequence

The backlight should be turned on after the display signal is valid (VALID period) to avoid unstable display images when powered on. Before turning off the backlight, the LVDS signal should be stopped first.

5.3 Fuse Description

The VCC power supply circuit is equipped with FCC1620AB fuse (KAMAYA, rated 2.0 A, melting current 4.0 A). The rated current of the system power supply must be greater than 4.0 A, otherwise when the module is short circuited internally, the fuse may not be able to quickly melt, resulting in smoke or odor.

Input timing parameters

6.1 Clock and Synchronization

Pixel clock frequency: typical 38.36 MHz (26.07 ns period), range 34.0~42.0 MHz

Horizontal cycle: typical 26.69 μ s (1024 CLK), with a display period of 800 CLK

Vertical period: typical 16.68 ms (625 H), with a display period of 600 H → frame rate of 59.94 Hz

Data establishment/retention time: Referring to the LVDS transmitter specifications, usually at the ns level

Note: The vertical period must be an integer multiple of the horizontal period.

6.2 Timing Tolerance

When the input timing deviates from typical values, flickering, tearing, or image shift may occur. If the original system output timing is not completely consistent with NL8060BC21-11KG during replacement (such as some old motherboards using non-standard frame rates), it is recommended to adapt it through FPGA or timing conversion board.

Optical performance evaluation

7.1 Key optical parameters

Typical Value Remarks for Project Conditions

Brightness (center) IL=50 mA/channel 750 cd/m ² Initial value

Contrast center white/black 800:1

Brightness uniformity 5-point method 1.25 (maximum/minimum)

Color gamut relative to NTSC 40%

Response time Ton+Off 18 ms 10% ← → 90%

White balance color temperature x/y 0.313/0.329

Red/Green/Blue Coordinates - See Data Sheet for Details

7.2 Factors affecting optical performance

Environmental temperature: Response time may increase at low temperatures, and brightness may slightly decrease.

Perspective: The optimal grayscale (γ=2.2) is in the normal direction, and color cast is inevitable at large angles (due to the characteristics of the backlight prism).

Long term fixed pattern: may cause image sticking, it is recommended to use a screen saver.

Observation through polarized sunglasses: Due to the polarizing properties of the touch screen, there may be color darkening or inability to view.