The LC320EUA is a Color Active Matrix Liquid Crystal Display with an integral Light Emitting Diode (LED)
backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive display type which is operating in the normally black mode. It has a 31.55 inch diagonally
measured active display area with WUXGA resolution (1080 vertical by 1920 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arrayed in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 16.7Milion colors.
It is intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,
high color depth and fast response time are important.
Power (VCC, VDD, HVDD, VGH, VGL)
Gate Control Signal
Gamma Reference Voltage
EPI (RGB & Control signal) for Left drive
CN1
(50pin)
S1S1920
G1
Source Driver Circuit
TFT - LCD Panel
Power (VCC, VDD, HVDD, VGH, VGL)
Gate Control Signal
Gamma Reference Voltage
EPI (RGB & Control Signal) for Right drive
SIN, SCLK, V_Sync
+24.0V, GND, On/Off
ExtVBR-B
LED Driver
CN2
(50pin)
G1080
General Features
Active Screen Size31.55 inches(801.31mm) diagonal
Outline Dimension715.8 (H) × 416.33(V) X 9.7(B)/21.9 mm(D) (Typ.)
Pixel Pitch0.36375 mm x 0.36375 mm
Pixel Format1920 horiz. by 1080 vert. Pixels, RGB stripe arrangement
Color Depth8-bit, 16.7 M colors (※ 1.06B colors @ 10 bit (D) System Output )
1. Ambient temperature condition (Ta = 25 ± 2 °C )
Note
2. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be Max 39°C, and no condensation of water.
3. Gravity mura can be guaranteed below 40°C condition.
4. The maximum operating temperatures is based on the test condition that the surface temperature
of display area is less than or equal to 68°C with LCD module alone in a temperature controlled chamber.
Thermal management should be considered in final product design to prevent the surface temperature of
display area from being over 68℃. The range of operating temperature may be degraded in case of
improper thermal management in final product design.
Wet Bulb
Temperature [°C]
30
20
10
0
10203040506070800-20
Dry Bulb Temperature [°C]
50
40
90%
60
60%
40%
Humidity [(%)RH]
10%
Ver. 1.0
Storage
Operation
5 /40
LC320EUA
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
It requires several power inputs. The VCC is the basic power of LCD Driving power sequence, Which is used
to logic power voltage of Source D-IC and GIP.
Table 2. ELECTRICAL CHARACTERISTICS
ParameterSymbolConditionMINTYPMAXUnit Note
Logic & EPI Power VoltageVCC-1.621.81.98VDC
Logic High Level Input VoltageVIH-1.4-VCCVDC
Logic Low Level Input VoltageVIL-0-0.4VDC
Source D-IC Analog VoltageVDD-16.81717.2VDC
Half Source D-IC Analog VoltageH_VDD-8.38.58.7VDC6
V
Gamma Reference Voltage
Common VoltageVcomReverse7.07.37.6V
EPI input common voltageVCMLVDS Type0.8VCC/21.3V
EPI Input eye diagramVeye-90--mV
Gate High VoltageVGH
Gate Low VoltageVGL
GIP Bi-Scan Voltage
GIP Refresh Voltage
GIP Start Pulse VoltageVST-VGL-VGHV
GIP Operating ClockGCLK-VGL-VGHV
Total Power Current
Total Power Consumption
GMH
V
GML
VGI_P-VGL--VDC
VGI_N---VGHVDC
VGH
even/odd
ILCD--520650mA1
PLCD--6.27.8Watt1
(GMA1 ~ GMA9)H_VDD+0.2V-VDD-0.2VDC
(GMA10 ~ GMA18)0.2-H_VDD-0.2VVDC
@ 25℃26.72727.3VDC
@ 0℃28.72929.3VDC
-
-VGL-VGHV
-5.2-5.0-4.8VDC
5EPI input differential voltageVdiff-150-500mV
Note:
1. The specified current and power consumption are under the VLCD=12V., 25 ± 2°C, fV=60Hz
condition whereas mosaic pattern(8 x 6) is displayed and fVis the frame frequency.
2. The above spec is based on the basic model.
3. All of the typical gate voltage should be controlled within 1% voltage level
4. Ripple voltage level is recommended under ±5% of typical voltage
5. In case of EPI signal spec, refer to Fig 2 for the more detail.
6. HVDD Voltage level is half of VDD and it should be between Gamma9 and Gamma10.
Ver. 1.0
6 /40
VGH
VGHM
GND
VGL
LC320EUA
Product Specification
Without GPMWith GPM
FIG. 1 Gate Output Wave form without GPM and with GPM
EPI +
0 V
0 V
Vdiff
Vdiff
(Differential Probe)
(Differential Probe)
(Differential Probe)(Differential Probe)
FIG. 2-1 EPI Differential signal characteristics
EPI -
0 V
1 UI
0.5 UI
B1B2
(Differential Probe)
(Differential Probe)
(Differential Probe)(Differential Probe)
FIG. 2-2 Eye Pattern of EPI Input
Vdiff
(Active Probe)
(Active Probe)
(Active Probe)(Active Probe)
Vcm
Veye
Veye
Ver. 1.0
****Source PCB
Source PCB
Source PCBSource PCB
FIG. 3 Measure point
7 /40
Product Specification
Table 3. ELECTRICAL CHARACTERISTICS (Continue)
LC320EUA
ParameterSymbol
LED Driver :
Power Supply Input VoltageVBL22.824.025.2Vdc1
Power Supply Input Current IBL
Power Supply Input Current (In-Rush)In-rush--3A
Power ConsumptionPBL-
On/Off
Brightness AdjustExtVBR-B1-100%
Input Voltage for
Control System
Signals
LED :
Life Time30,00050,000Hrs2
PWM Frequency for
NTSC & PAL
Pulse Duty Level
(PWM)
VSYNC, SIN, SCLK
(Local Dimming)
OnV on2.5-3.6Vdc
OffV off-0.30.00.7Vdc
PAL100Hz3
NTSC120Hz3
High Level2.5-3.6
Low Level0.0-0.7
High Level2.73.33.6
Low Level-0.30.00.4
MinTypMax
Values
-
1.56
37.439.7
1.74
UnitNotes
A1
VBL = 22.8V
Ext VBR-B = 100%
W1
On Duty
Vdc
Vdc
Vdc
Vdc
HIGH : on duty
LOW : off duty
4
6
Notes :
1. Electrical characteristics are determined after the unit has been ‘ON’ and stable for approximately 60
minutes at 25±2°C. The specified current and power consumption are under the typical supply Input voltage
24Vand VBR (ExtVBR-B : 100%), it is total power consumption.
2. The life time (MTTF) is determined as the time which luminance of the LED is 50% compared to that of initial
value at the typical LED current (ExtVBR-B :100%) on condition of continuous operating in LCM state at
25±2°C.
3. LGD recommend that the PWM freq. is synchronized with One time harmonic of V_sync signal of system.
Though PWM frequency is over 120Hz (max 252Hz), function of LED Driver is not affected.
4. The duration of rush current is about 200ms. This duration is applied to LED on time.
5. Even though inrush current is over the specified value, there is no problem if I2T spec of fuse is satisfied.
6. Ext_PWM Signal have to input available duty range.
Between 99% and 100% ExtVBR-B duty have to be avoided. ( 99% < ExtVBR-B < 100%)
But ExtVBR-B 0% and 100% are available.
High
Available duty range
Low
0%
1%
Ver. 1.0
99% 100%Ext_PWM Input Duty
8 /40
LC320EUA
Product Specification
3-2. Interface Connections
This LCD module employs two kinds of interface connection, two 50-pin FFC connector are used for the
module electronics and 8-pin / 8-pin connectors are used for the integral backlight system.
3-2-1. LCD Module
-LCD Connector (CN1): TF06L-50S-0.5SH (Manufactured by HRS) or Compatible