4DLCD-70800480

General Specification

4DLCD-70800480 is a colour active matrix LCD module incorporating amorphous silicon TFT (Thin Film Transistor). It is composed of a colour TFT-LCD panel, driver IC, FPC and a backlight unit and with/without a Resistive/Capacitive Touch Panel (RTP or CTP), and with/without a Cover Lens Bezel (CLB). The module display area contains 800 x 480 pixels. This product accords with RoHS environmental criterion.

Part Number Details:

4DLCD - 4D Systems LCD Display

70800480 - 7.0 inch, 800 x 480 Resolution

RTP - Resistive

CTP - Capacitive Touch

CLB - Cover Lens Bezel

Specification

ITEM	CONTENTS	UNIT
LCD Type	TFT / Transmissive / Normally white
Size	7.0	Inch
Viewing Direction	12:00 (without image inversion)
Gray Scale Inversion Direction	6:00	O'Clock
LCD (W x H x T)	4DLCD-70800480 : 164.90 x 100.00 x 3.50	mm
	4DLCD-70800480-RTP : 164.90 x 100.00 x 4.60
	4DLCD-70800480-CTP : 164.90 x 100.00 x 5.25
	4DLCD-70800480-CTP-CLB : 190.08 x 121.92 x 5.15
Active Area (W x H)	153.84 x 85.63	mm
Dot Pitch (W x H)	0.1923 x 0.1784	mm
Number of Dots (Pixels)	800 (RGB) x 480
Driver IC	Source: EK9716 Gate: EK73002
Backlight Type	27 LEDs (9x3)
Surface Luminance	4DLCD-70800480 : 500 (typical)	cd/m2
	4DLCD-70800480-RTP : 400 (typical)
	4DLCD-70800480-CTP : 475 (typical)
	4DLCD-70800480-CTP-CLB : 475 (typical)
Interface Type	Parallel RGB 24-bit
Color Depth	16.7M
Pixel Arrangement	RGB Vertical Stripe
Surface Treatment	AG
Input Voltage	3.3 (typical)	V
With/Without TP (Touch Panel)	4DLCD-70800480 - Without TP
	4DLCD-70800480-RTP – With Resistive Touch
	4DLCD-70800480-CTP - With Capacitive Touch
	4DLCD-50800480-CTP-CLB – Capacitive Touch and CLB
Weight	4DLCD-70800480 : 111.8	g
	4DLCD-70800480-RTP : 141.8
	4DLCD-70800480-CTP : 165.0
	4DLCD-70800480-CTP-CLB : 187.8

Note

1. RoHS compliant
2. LCD weight tolerance: ± 5%.

TFT LCD Display Drawing (Non Touch Version)

TFT LCD Display Drawing (Resistive Touch Version)

TFT LCD Display Drawing (Capacitive Touch Version)

TFT LCD Display Drawing (Capacitive Touch Version with Cover Lens Bezel)

Absolute Maximum Ratings

Absolute Maximum Ratings

PARAMETER	SYMBOL	MIN	MAX	UNIT
Supply Voltage for LCD Logic	VDD/VCC	-0.3	4.0	V
Supply Voltage for TP Logic	VDD/VCC-VSS	-	3.6	V
Input Voltage for Logic	VIN	VSS-0.5	VDD	V
LED current (each LED)	IF	-	25	mA
Operating Temperature	TOP	-20	70	°C
Storage Temperature	TST	-30	80	°C
Humidity	RH	-	90% (Max60°C)	RH

Electrical Characteristics

Electrical Characteristics

PARAMETER	SYMBOL	MIN	TYP	MAX	UNIT
Power Voltage (Logic)	VDD/DCC	2.6	3.3	3.6	V
Input Current (Logic)	IVDD	-	20	-	mA
Input Voltage 'H' Level	VIH	0.7 VDD	-	VDD	V
Input Voltage 'L' Level	VIL	0	-	0.3 VDD	V

Electro-Optical Characteristics

Electro-Optical Characteristics

ITEM	SYM	CONDITION	MIN	TYP	MAX	UNIT	REMARKS
Response Time	Tr+Tf	θ=0	-	25	30	ms	Figure 1(4)
Contrast Ratio	Cr	°	350	500	-	-	Figure 2(1)
Luminance Uniformity	δ WHITE	∅=0	75	80	-	%	Figure 2(3)
Surface Luminance	Lv	4DLCD-70800480	450	500	-	cd/m2	Figure 2(2)
		4DLCD-70800480-RTP	390	400	-
		4DLCD-70800480-CTP	460	475	-
		4DLCD-70800480-CTP-CLB	460	475	-
Viewing Angle Range	θ	∅ = 90°	60	70	-	deg	Figure 3(6)
		∅ = 270°	50	60	-	deg
		∅ = 0°	60	70	-	deg
		∅ = 180°	60	70	-	deg
CIE (x,y) Cromacity - Red	x		0.574	0.624	0.674
	y		0.318	0.368	0.418
CIE (x,y) Cromacity - Green	x	θ=0°	0.3	0.35	0.4
	y	∅=0°	0.5	0.55	0.6		Figure 2(5)
CIE (x,y) Cromacity - Blue	x	Ta=25	0.093	0.143	0.193
	y		0.069	0.119	0.169
CIE (x,y) Cromacity - White	x		0.26	0.31	0.36
	y		0.283	0.333	0.383

Backlight Characteristics

Backlight Characteristics

PARAMETER	SYMBOL	MIN	TYP	MAX	UNIT
Voltage for LED backlight (Each LED)	Vl	-	3.2	3.4	V
Voltage for LED backlight (entire String – 27 LED's)	VlSTRING	-	9.6	10.2	V
Current for LED backlight (each LED)	Il	-	20	25	mA
Current for LED backlight (entire String – 27 LED’s)	IlSTRING	-	180	225	mA
LED Lifetime	-	30000	-	-	Hrs

Note

The LED lifetime is defined as the module brightness decreasing to 50% original brightness at Ta=25°C.

1. Contrast Ratio(CR) is defined mathematically as below, for more information see Figure 1.

   

2. Surface luminance is the LCD surface from the surface with all pixels displaying white. For more information, see Figure 2.

   

3. The uniformity in surface luminance δ WHITE is determined by measuring luminance at each test position 1 through 5, and then dividing the maximum luminance of 5 points luminance by the minimum luminance of 5 points luminance. For more information, see Figure 2.

   

4. Response time is the time required for the display to transition from white to black (Rise Time, Tr) and from black to white (Decay Time, Tf). For additional information see Figure 1. The test equipment is the Autronic-Melchers ConoScope series.

5. CIE (x, y) chromaticity, the x and y value is determined by measuring luminance at each test position 1 through 5, and then making the average value.

6. Viewing angle is the angle at which the contrast ratio is greater than 2. For the TFT module, the contrast ratio is greater than 10. The angles are determined for the horizontal or x-axis and the vertical or y-axis to the z-axis which is normal to the LCD surface. For more information, see Figure 3.

7. For viewing angle and response time testing, the testing data is based on the Autronic-Melchers ConoScope series. Instruments for Contrast Ratio, Surface Luminance, Luminance Uniformity, and CIE the test data is based on TOPCONs BM-5 photodetector.

The definition of response time

Measuring method for Contrast ratio, surface luminance, Luminance uniformity, CIE (x, y) chromaticity

The definition of viewing angle

Interface Descriptions

LCD Interface

PIN NO.	SYMBOL	DESCRIPTION	REMARK
1	LED-	Cathode of LED Backlight
2	LED+	Anode of LED Backlight
3	GND	Ground
4	VDD	Power supply (Logic)
5	R0	Red data input R0	Note1
6	R1	Red data input R1	Note1
7	R2	Red data input R2	Note1
8	R3	Red data input R3	Note1
9	R4	Red data input R4	Note1
10	R5	Red data input R5	Note1
11	R6	Red data input R6	Note1
12	R7	Red data input R7	Note1
13	G0	Green data input G0	Note1
14	G1	Green data input G1	Note1
15	G2	Green data input G2	Note1
16	G3	Green data input G3	Note1
17	G4	Green data input G4	Note1
18	G5	Green data input G5	Note1
19	G6	Green data input G6	Note1
20	G7	Green data input G7	Note1
21	B0	Blue data input B0	Note1
22	B1	Blue data input B1	Note1
23	B2	Blue data input B2	Note1
24	B3	Blue data input B3	Note1
25	B4	Blue data input B4	Note1
26	B5	Blue data input B5	Note1
27	B6	Blue data input B6	Note1
28	B7	Blue data input B7	Note1
29	GND	Ground
30	DCLK	Clock for input data. Data latched at rising/falling edge of this signal. Default is falling edge.
31	DISP	Standby mode control. (Normally pull high) STBYB=”L”, enter standby mode for power saving. Timing controller source driver will turn off, all outputs are Hi-Z. STBYB=”H”, normal operation.
32	HS	Horizontal sync input
33	VS	Vertical sync input
34	DE	Input data enable control. When DE mode, active High to enable data input (Normally pull low)
35	NC	No Connect
36	GND	Ground
37	XR	The touch panel X right pin	Note2
38	YD	The touch panel Y down pin	Note2
39	XL	The touch panel X left pin	Note2
40	YU	The touch panel Y up pin	Note2

Note

1. For applications that uses less than 24 bits, pins are tied to ground to reduce the total bits used.
2. Pins 37, 38, 39, and 40 are only applicable to resistive touch screen displays (4DLCD-xxxxxxxx-RTP).

CTP Interface

PIN NO.	SYMBOL	DESCRIPTION	REMARK
1	NC	No Connect	Only connected to the CTP Panel, not connected to the LCD itself.
2	NC	No Connect
3	RST	Reset pin
4	GND	Ground
5	INT	Interrupt signal from CTP
6	SDA	I2C SDA
7	SCL	I2C SCL	N/A for Non-touch and RTP models
8	GND	Ground
9	GND	Ground
10	VDD	Power Supply (3.3V)

The Capacitive Touch is driven by a Focaltech FT5446 capacitive touch driver IC, which utilizes an I2C interface, and is capable of 5-point touch.

Backlight Example Circuit

The backlight circuit of this LCD needs an appropriate backlight driver. It can not be simply driven directly by a 3.3V or 5.0V supply like smaller displays, this is because of the number of LED's connected in series and parallel, which is known as an LED String. A backlight driver is required to boost the voltage from the input supply to the requirements for the LED string.

There are many backlight driver IC's on the market. Some examples are:

• Texas Instruments TPS61165
• Texas Instruments TPS61080
• On-Semi FAN5333B

On selecting of the backlight driver, ensure it is capable of driving the number of LED's in the string featured in this display, and it supports the input voltage you are looking to supply. Often 3.3V or 5V is possible to supply into the backlight drivers, and it will boost it to the required output based on the requirements of the LED's. The current can then be set with a resistor. Please refer to the datasheet for the selected Driver IC of your choice.

In this example, the TPS61165 is depicted.

The RSet calculation is found in the Datasheet for the backlight driver. Each one will vary, as well as the circuit and the components required. Please refer to their datasheets.

Refer to the Backlight Characteristics section for information specific to the backlight requirements, as well as the drawing of the display to see the configuration of the backlight LED string.

LCD Timing Details

Timing Chart

PARAMETER	SYMBOL	MIN	TYP	MAX	UNIT	CONDITION
CLK Clock Time	Tclk	1/Max(FCLK)	-	1/Min(FCLK)	ns	-
CLK Pulse Duty	Tchw	40	50	60	%	TCLK
HSYNC to CLK	Thc	-	-	1	CLK	-
HSYNC Width	Thwh	1	-	-	CLK	-
VSYNC Width	Tvwh	1	-	-	ns	-
HSYNC Period Time	Th	60	63.56	67	ns	-
VSYNC Set-up Time	Tvst	12	-	-	ns	-
VSYNC Hold Time	Tvhd	12	-	-	ns	-
HSYNC Setup Time	Thst	12	-	-	ns	-
HSYNC Hold Time	Thhd	12	-	-	ns	-
Data Set-up Time	Tdsu	12	-	-	ns	D00~D23 to CLK
Data Hold Time	Tdhd	12	-	-	ns	D00~D23 to CLK
DEN Set-up Time	Tesu	12	-	-	ns	DEN to CLK

Note

Timing parameter (VDD=3.3V, GND=0V, Ta=25˚C)

Timing Characteristic

ITEM	SYMBOL	MIN	TYP	MAX	UNIT
DCLK Frequency	Fclk	20	33.3	50	MHz
DCLK Period	Tclk	-	-	-	Ns
Hsync : Period Time	Th	908	928	1088	DCLK
Hsync : Display Period	Thdisp		800	-	DCLK
Hsync : To 1st Data input	Thbp	1	40	87	DCLK	By H BLANKING setting
Hsync : Front Porch	Thfp	20	40	200	DCLK
Hsync : Pulse Width	Thw	1	48	87	DCLK
Vsync : Period Time	Tv	517	525	712	H
Vsync : Display Period	TVdisp	-	480	-	H
Vsync : Delay to 1st Gate output	Tvbp	29	31	31	H	By V BLANKING setting
Vsync : Front Porch	Tvfp	5	13	200	H
Vsync : Pulse Width	Tvw	1	1	3	H

SYNC Mode Timing Diagram

SYNC-DE Mode Timing Diagram

Reset Timing

SIGNAL	SYMBOL	PARAMETER	MIN	MAX	UNIT
RESET	tRW	Reset low pulse width	40	-	us
	tRT	Reset complete time	-	5 (note1)	ms
			-	120 (note2)	ms

Note

1. When reset applied during SLPIN mode
2. When reset applied during SLPOUT mode.

Power On Sequence

Power-off Sequence

Note

• When normally-black LC is used, please send black pattern to discharge the panel.
• When normally-white LC is used, please send white pattern to discharge the panel.

Reliability Test

Reliability Test

No.	SYMBOL	TEST CONDITION	REMARK
1	High Temperature Storage	80°C±2°C 96H Restore 2H at 25°C Power off
2	Low Temperature Storage	-30°C±2°C 96H Restore 2H at 25°C Power off
3	High Temperature Operation	70°C±2°C 96H Power on
4	Low Temperature Operation	-20°C±2°C 96H Power on
5	High Temperature & Humidity Operation	60°C±2°C 90%RH 96H Power on	After test cosmetic and electrical defects should not happen.
6	Temperature Cycle	-20°C←→25°C←→70°C 30min 5min 30min After 10 cycles, restore 2H at 25°C Power off
7	Vibration Test	10Hz~150Hz, 100m/s2, 120min
8	Shock Test	Half-sinewave, 300m/s2, 11ms

Note

The Displays are of the highest rated ‘Grade A’, which allows for 0-4 defective pixels. A defective pixel could be solid Black (Dead), White, Red, Green or Blue.

Precautions for Using LCD Modules

Handing Precautions

• The display panel is made of glass and a polarizer. The glass is fragile. It tends to be chipped during handling, especially on the edges. Please avoid dropping or jarring. Please be careful not subject it to a mechanical shock by dropping it on impact.
• If the display panel is damaged and the liquid crystal substance leaks out, be sure not to get any of it in your mouth. If the substance contacts your skin or clothes, wash it off using soap and water.
• Do not apply excessive force to the display surface or the adjoining areas since this may cause the color tone to vary. Do not touch the display with bare hands. This will stain the display area and degrade insulation between terminals (some cosmetics are determined by the polarizer).
• The polarizer covering the display surface of the LCD module is soft and easily scratched. Handle this polarizer carefully. Do not touch, push or rub the exposed polarizer with anything harder than an HB pencil lead (e.g., glass, tweezers, etc.). Do not put or attach anything to the display area to avoid leaving marks on it. Condensation on the surface and contact with terminals due to cold temperatures will damage, stain or contaminate the polarizer. After products are tested at low temperatures they must be warmed up in a container before coming into contact with room-temperature air.
• If the display surface becomes contaminated, breathe on the surface and gently wipe it with a soft dry cloth. If it is heavily contaminated, moisten the cloth with one of the following solvents
  • Isopropyl alcohol
  • Ethyl alcohol Do not scrub hard as it might damage the display surface.
• Solvents other than those mentioned above may damage the polarizer. Especially the following.
  • Water
  • Ketone
  • Aromatic solvents
    Wipe off saliva or water drops immediately, contact with water over a long period may cause deformation or color fading. Avoid contact with oil and fat.
• Take necessary precautions to minimize corrosion of the electrode. Corrosion of the electrodes is accelerated by water droplets, moisture condensation or current flow in a high-humidity environment.
• Install the LCD Module by using the mounting holes. When mounting the LCD module, make sure it is free of twisting, warping and distortion. In particular, do not forcibly pull or bend the I/O cable or the backlight cable.
• Do not attempt to disassemble or process the LCD module.
• NC terminal should be open. Do not connect anything to it.
• If the logic circuit power is off, do not apply input signals.
• Control Electro-Static Discharge. Since this module uses a CMOS LSI, the same careful attention should be paid to electrostatic discharge as for an ordinary CMOS IC. To prevent the destruction of the elements by static electricity, ensure that an optimum work environment is maintained.
  • Before removing the LCM from its packing case or incorporating it into a set, be sure that the module and your body have the same electric potential. Be sure to ground your body when handling the LCD modules.
  • To reduce the amount of static electricity generated, do not conduct assembly and other work under dry conditions. To reduce the generation of static electricity, please ensure that the air in the work environment is not too dry. Relative humidity of 50%-60% is recommended. As much as possible, make the electric potential of your work clothes and that of the workbench the ground potential.
  • The LCD module is coated with a film to protect the display surface. Be careful when peeling off this protective film since static electricity may be generated.
• Since the LCM has been assembled and adjusted with a high degree of precision, avoid applying excessive shocks to the module or making any alterations or modifications to it.
  • Do not alter, modify or change the shape of the tab on the metal frame.
  • Do not make extra holes on the printed circuit board, modify its shape or change the positions of the components to be attached.
  • Do not damage or modify the pattern writing on the printed circuit board.
  • Do not modify the zebra rubber strip (conductive rubber) or heat seal connector.
  • Do not drop, bend or twist the LCM.

Storage Precautions

When storing the LCD modules, the following precautions are necessary.

• Store them in a sealed polyethylene bag. If properly sealed, there is no need for the desiccant.
• Store them in a dark place. Do not expose to sunlight or fluorescent light, keep the temperature between 0°C and 35°C, and keep the relative humidity between 40%RH and 60%RH.
• The polarizer surface should not come in contact with any other objects. We advise you to store them in an anti-static electricity container in which they were shipped. Some Liquid crystals solidify under low temperatures (below the storage temperature range) leading to defective orientation or the generation of air bubbles (black or white). Air bubbles may also be generated if the module is subjected to low temperatures.
• If the LCD modules have been operating for a long time showing the same display patterns, the display patterns may remain on the screen as ghost images and a slight contrast irregularity may also appear. A normal operating status can be regained by suspending use for some time. It should be noted that this phenomenon does not adversely affect performance reliability.
• To minimize the performance degradation of the LCD modules resulting from the destruction caused by static electricity etc., please avoid holding the following sections when handling the modules’
  • The exposed area of the printed circuit board
  • Terminal electrode sections

Revision History

Document Revision

REVISION	DATE	COMMENT
1.0	18/10/2019	Initial Version
1.1	28/08/2020	Updates
1.2	15/01/2021	Updated LED voltage/current information
1.3	29/01/2021	Updated Drawings / Quality
1.4	24/06/2021	Added logic current consumption data, added backlight circuit example.
1.5	17/10/2023	Modified datasheet for web-based documentation