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RGB 4.3″

This datasheet gives detailed information about the Riverdi 4.3″ TFT displays with an RGB interface. The displays come in different versions: with capacitive, resistive, or no touchscreen, with a decorative cover glass, as well as with our without a metal mounting frame.

Rev.1.0
2019-06-07

ITEM CONTENTS UNIT
LCD Type TFT/Transmissive/Normally white /
Size 4.3 Inch
Viewing Direction 12:00 (without image inversion) O’ Clock
Gray Scale Inversion Direction 6:00 O’ Clock
Number of Dots 480 x (RGB) × 272 /
Driver IC HX8257A /
Interface Type 24bit RGB /
Brightness no touch module 550 cd/m2
CTP module 500
RTP module 440
Color Depth 16.7M /
Pixel Arrangement RGB Vertical Stripe /
Surface Treatment Anti-glare / Clear (for CTP) /
Input Voltage 3.3 V

Note 1: RoHS, REACH SVHC compliant

Note 2: LCM weight tolerance: ± 5%.

1. Module classification information

RV T 4.3 x x T x W x 0x
1. 2. 3. 4. 5. 6. 7. 8. 9. 10.
1. BRAND RV – Riverdi
2. PRODUCT TYPE T – TFT Standard
3. DISPLAY SIZE 43 – 4.3”
4. MODEL SERIAL NO. x (A-Z)

U – UxTouch

5. RESOLUTION 480272 – 480×272 px

L – 480×272 px

6. INTERFACE T– LCD TFT
7. FRAME N – No Frame

F – Mounting Frame

8. BACKLIGHT TYPE W – LED White
9. TOUCH PANEL N – No Touch Panel

R – Resistive Touch Panel

C – Capacitive Touch Panel

10. VERSION 0x (00-99)

2. Assembly guide – integration

Three options of rear side adhesive tape are available: double side adhesive tape 0.2 mm with 3M 467MP glue, foam double side adhesive tape 0.5 mm with DST 3M 9495LE glue or without any tape.

There are also two versions of glass color: black and white.

Rear side adhesive tape options:

Double side adhesive tape with DST 3M 9495LE glue (total thickness 0.2mm) Foam double side adhesive tape with 3M 9495LE glue (total thickness 0.5mm) Without tape

 

Cover glass color options:

BLACK WHITE

Product options:

PART NUMBER DESCRIPTION
RVT43ULTNWC00 RGB, CTP uxTouch, black cover glass, 0.2mm DST
RVT43ULTNWC01 RGB, CTP uxTouch, black cover glass, 0.5 mm DST
RVT43ULTNWC02 RGB, CTP uxTouch, black cover glass, no DST
RVT43ULTNWC03 RGB, CTP uxTouch, white cover glass, 0.2mm DST
RVT43ULTNWC04 RGB, CTP uxTouch, white cover glass, 0.5 mm DST
RVT43ULTNWC05 RGB, CTP uxTouch, white cover glass, no DST

2.1. UxTouch assembly

UxTouch are LCD TFT displays with specially designed projected capacitive touch panels. UxTouch display can be mounted without any holed in the housing. Our standard UxTouch displays include double-sided adhesive tape (DST) to stick TFT easily to the housing. Basic series include 4.3”, 5.0” and 7.0” display sizes.

UxTouch models with double-side adhesive tape (PN with endings 00, 01, 03, 04) can be mounted by connecting the glass to the housing. Riverdi recommends to use support brackets assembled to display’s back. An additional support will stiffen the whole structure and minimize the influence of external factors such as vibration. Figure 1 and Figure 2 below show examples of using support elements.

Figure 1. Example of using support brackets

2.2. Mounting frame

For dimensions 3.5”, 4.3”, 5.0” and 7.0” the product with mounting frame version is available. Thanks to the four catches attached to the side, frame provides strong assembly to the surface by mounting element (like the screw, see Figure 3). The frames are specially designed to fit Riverdi products perfectly. The diameter of the mounting hole is 3.5mm.

Figure 2. Mounting frame

3. Drawings

4. Absolute maximum ratings

PARAMETER SYMBOL MIN MAX UNIT
Supply Voltage for LCD Logic VDD -0.3 4.5 V
Supply Voltage for CTP Logic VDD-VSS -0.3 3.6 V
Input Voltage for Logic VIN VSS-0.5 VDD V
Operating Temperature TOP -20 70 °C
Storage Temperature TST -30 80 °C
Humidity RH 90% (Max 60°C) RH
LED forward current (each LED) IF 25 mA

5. Electrical characteristics

PARAMETER SYMBOL MIN TYP MAX UNIT NOTES
Supply Voltage For Module VDD 3.0 3.3 3.6 V
Input Current  IDD 19.5 mA VDD=3.3V
Input Voltage ‘H’ level Vih 0.7VDD VDD V
Input Voltage ‘L’ level Vil VSS 0.3VDD V
Voltage for LED backlight Vl 15 16 17 V
Current for LED backlight IL 40 mA
LED Life Time 30000 50000 Hrs Note1

Note 1: The LED life time is defined as the module brightness decrease to 50% original brightness at Ta=25°C.

6. Electro-optical characteristics

ITEM SYMBOL CONDITION MIN TYP MAX UNIT REMARK NOTE
Response Time Tr+Tf
θ=0°
∅=0°
Ta=25
20 30 ms Figure 4 4
Contrast Ratio Cr 320 400 Figure 5 1
Luminance Uniformity δ WHITE 80 % Figure 5 3
Surface Luminance
TFT
Lv
440 550
cd/m2
Figure 5
2
TFT+CTP 400 500
TFT+RTP 350 440
Viewing Angle Range
θ
∅ = 90° 35 50 deg Figure 6
6
∅ = 270° 55 70 deg Figure 6
∅ = 0° 55 70 deg Figure 6
∅ = 180° 55 70 deg Figure 6
CIE (x, y)
Chromaticity
Red
x
θ=0°
∅=0°
Ta=25
0.570 0.620 0.670
Figure 6
5
y 0.294 0.344 0.394
Green
x 0.256 0.306 0.356
y 0.513 0.563 0.613
Blue
x 0.083 0.133 0.183
y 0.099 0.149 0.199
White
x 0.250 0.300 0.350
y 0.280 0.330 0.380

Note 1. Contrast Ratio(CR) is defined mathematically as below, for more information see  Figure 3 .

Note 2. Surface luminance is the LCD surface from the surface with all pixels displaying white. For more information, see Figure 3 .

Note 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 minimum luminance of 5 points luminance. For more information, see Figure 3 .

Note 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 FIG 1. The test equipment is Autronic-Melchers’s ConoScope series.

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

Note 6. Viewing angle is the angle at which the contrast ratio is greater than 2. For 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 with respect to the z axis which is normal to the LCD surface. For more information see Figure 4.

Note 7. For viewing angle and response time testing, the testing data is based on Autronic-Melchers’s ConoScope series. Instruments for Contrast Ratio, Surface Luminance, Luminance Uniformity, CIE the test data is based on TOPCON’s BM-5 photo detector.

Note 8. For TFT module, Gray scale reverse occurs in the direction of panel viewing angle.

Figure 3. The definition of response time

Figure 3. Measuring method for Contrast ratio, surface luminance, Luminance uniformity, CIE (x, y) chromaticity

Figure 4.The definition of viewing angle

7. Interface description

PIN NO. SYMBOL DESCRIPTION NOTE
1 VLED- Cathode Of LED Backlight  
2 VLED+ Anode Of LED Backlight  
3 GND Power Ground  
4 VDD Power Voltage  
5-12 R0-R7 Red Data (R0-LSB, R7-MSB)  
13-20 G0-G7 Green Data (G0-LSB, G7-MSB)  
21-28 B0-B7 Blue Data (B0-LSB, B7-MSB)  
29 GND Power Ground  
30 DCLK Pixel Clock  
31 DISP Display On/Off  
32 HSYNC Horizontal Sync Signal  
33 VSYNC Vertical Sync Signal  
34 DE Data Enable  
35 NC No Connect  
36 GND Power Ground  
37 NC No Connect  
38 NC No Connect  
39 NC No Connect  
40 NC No Connect  

Note 1: Displays marked with „rev.2.0” printing, have the ability to select the operating mode: HV mode or DE mode.

HVDSL=”H”: Set under HV mode, VSD and HSD signal have to provide by system.

HVDSL=”L”: Set under DE mode, DE signal have to provide by system.

By default: Internal pulled weak low.

7.1. Interface CTP

PIN NO. SYMBOL DESCRIPTION REMARK
1 Vss Power Ground  
2 Vdd Power For CTP  
3 SCL I2C SCL  
4 NC  
5 SDA I2C SDA  
6 NC  
7 /RST Reset pin  
8 NC  
9 /INT Interrupt signal from CTP  
10 VSS Power Ground  

8. Timing characteristics

8.1. LCD Clock and data input time diagram

Figure 5. Clock and data input time diagram

8.2. Parallel RGB input timing table for LCD

PARAMETER SYMBOL MIN TYP MAX UNIT
DCLK Frequency Fclk 5 9 12 MHz
VSD Period Time Tv 277 288 400 H
VSD Display Area Tvd 272 H
VSD Back Porch Tvb 3 8 31 H
VSD Front Porch Tvfp 2 8 97 H
HSD Period Time Th 520 525 800 DCLK
HSD Display Area Thd 480 DCLK
HSD Back Porch Thbp 36 40 255 DCLK
HSD Front Porch Thfp 4 5 65 DCLK

8.3. CTP interface timing characteristics

PARAMETER MIN MAX UNIT
SCL Frequency 0 400 kHz
Bus Free Time Between a STOP and START Condition 4.7 / μs
Hold Time (repeated) START Condition 4.0 / μs
Data Setup Time 250 / ns
Setup Time for Repeated START Condition 4.7 / μs
Setup Time for STOP Condition 4.0 / μs

8.4. I2C Read/Write Interface description

Figure 6. Write N bytes to I2C slave

Figure 7. Set Data Address

Figure 8. Read X bytes from I2C Slave

8.5. Communication of the I2C interface with Host

Figure 9. Communication of the I2C interface with Host

8.6. Touch data read protocol

ADDRESS NAME BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0 HOST ACCESS
00h DEVIDE_MODE Device Mode[2:0] RW
01h GEST_ID Gesture ID[7:0] R
02h TD_STATUS Number of touch points[3:0] R
03h TOUCH1_XH 1st Event Flag 1st Touch X Position[11:8] R
04h TOUCH1_XL 1st Touch X Position[7:0] R
05h TOUCH1_YH 1st Touch ID[3:0] 1st Touch X Position[11:8] R
06h TOUCH1_YL 1st Touch Y Position[7:0] R
07h R
08h R
09h TOUCH2_XH 2nd Event Flag 2nd Touch X Position[11:8] R
0Ah TOUCH2_XL 2nd Touch X Position[7:0] R
0Bh TOUCH2_YH 2nd Touch ID[3:0] 2nd Touch X Position[11:8] R
0Ch TOUCH2_YL 2nd Touch Y Position[7:0] R
0Dh R
0Eh R
0Fh TOUCH3_XH 3rd Event Flag 3rd Touch X Position[11:8] R
10h TOUCH3_XL 3rd Touch X Position[7:0] R
11h TOUCH3_YH 3rd Touch ID[3:0] 3rd Touch X Position[11:8] R
12h TOUCH3_YL 3rd Touch Y Position[7:0] R
13h R
14h R
15h TOUCH4_XH 4th Event Flag 4th Touch X Position[11:8] R
16h TOUCH4_XL 4th Touch X Position[7:0] R
17h TOUCH4_YH 4th Touch ID[3:0] 4th Touch X Position[11:8] R
18h TOUCH4_YL 4th Touch Y Position[7:0] R
19h R
1Ah R
1Bh TOUCH5_XH 5th Event Flag 5th Touch X Position[11:8] R
1Ch TOUCH5_XL 5th Touch X Position[7:0] R
1Dh TOUCH5_YH 5th Touch ID[3:0] 5th Touch X Position[11:8] R
1Eh TOUCH5_YL 5th Touch Y Position[7:0] R

8.7 Data description

DEVICE_MODE

This register is the device mode register, configure it to determine the current mode of the chip.

ADRESS BIT ADRESS REGISTER NAME DESCRIPTION
00h 6:4 Device Mode [2:0] 000b Work Mode

100b Factory Mode – Read Raw Data

GEST_ID

This register describes the gesture of a valid touch.

ADRESS BIT ADRESS REGISTER NAME DESCRIPTION
01h 7:0 Gesture ID [7:0] Gesture ID

0x10 Move Up

0x14 Move Down

0x18 Move Right

0x48 Zoom In

0x49 Zoom Out

0x00 No Gesture

TD_STATUS

This register is the Touch Data status register.

ADRESS BIT ADRESS REGISTER NAME DESCRIPTION
02h 3:0 Number of Touch Points [2:0] How Many Points Detected

1-5 is Valid

7:4    

TOUCHn_XH(n:1-10)

This register describes MSB of the X coordinate of the nth touch point and the corresponding event flag.

ADRESS BIT ADRESS REGISTER NAME DESCRIPTION
03h

~

39h

7:6 Event Flag 00b: Put Down

01b: Put Up

10b: Contact

11b: Reserved

5:4   Reserved
3:0 Touch X Position [11:8] MSB of Touch X Position in Pixels

TOUCHn_XL(n:1-10)

This register describes LSB of the X coordinate of the nth touch point.

ADRESS BIT ADRESS REGISTER NAME DESCRIPTION
04h

~

3Ah

7:0 Touch X Position [7:0] LSB of the Touch X Position in Pixels

TOUCHn_YH(n:1-10)

This register describes MSB of the Y coordinate of the nth touch point and corresponding touch ID.

ADRESS BIT ADRESS REGISTER NAME DESCRIPTION
05h

~

3Bh

7:4 Touch ID[3:0] Touch ID of Touch Point
3:0 Touch X Position [11:8] MSB of Touch Y Position in Pixels

TOUCHn_YL(n:1-10)

This register describes LSB of the Y coordinate of the nth touch point.

ADRESS BIT ADRESS REGISTER NAME DESCRIPTION
05h

~

3Bh

7:0 Touch X Position [7:0] LSB of the Touch Y Position in Pixels

8.8 interrupt trigger mode

Figure 10. Interrupt trigger mode timing

9. Touch screen panel specification

9.1. Electrical characteristics

9.1.1. Capacitive touch panel

DESCRIPTION SPECIFICATION
Operating Voltage DC 2.8~3.3V
Power Consumption (IDD) Active Mode 10~18mA
Sleep Mode 30~50μA
Interface I2C
Linearity <1.5%
Controller FT5446
I2C address 0x38 (7-bit address)
Resolution 1280*768

9.1.2. Resistive touch panel

ITEM VALUE UNIT REMARK
Min. Typ. Max.
Linearity -3.0 3.0 % Analog X and Y directions
Terminal Resistance 400 1050 X
100 450 Y
Insulation Resistance MΩ DC 25V
Voltage 10 V DC
Chattering 10 ms 100kΩ pull-up
Transparency 80 % JIS K7105

Note: Avoid operating with hard or sharp material such as a ball point pen or a mechanical pencil except a polyacetal pen (tip R0.8mm or less) or a finger

9.2. Mechanical characteristic

9.2.1. Capacitive touch panel

DESCRIPTION INL SPECIFICATION REMARK
Touch Panel Size 4.3 inch  
Outline Dimension (OD) 103.1mm x 65.4mm Cover Lens Outline
Outline Dimension (OD) – UxTouch 120.38mm x 79.20mm Cover Lens Outline
Product Thickness 1.7mm  
Glass Thickness 0.7mm  
Ink View Area 97.0mm x 55.5mm  
Sensor Active Area 97.4mm x 56.4mm  
Input Method 5 Finger  
Activation Force Touch  
Surface Hardness ≥7H  

9.2.2. Resistive touch panel

ITEM VALUE UNIT REMARK
Min. Typ. Max.
Activation Force 30 gf Note 1
Durability – Surface Scratching Write 100,000 characters Note 2
Durability-Surface Pitting 1,000,000 touches Note 3
Surface Hardness 3 H JIS K5400

Note 1: Force test condition, Input DC 5V on X direction, Drop off Polyacetal Stylus (R0.8), until output voltage stabilize, then get the R8.0mm Silicon rubber and do finger Activation force test. Next step, 9 points.

Note 2: Measurement surface area conditions, Scratch 100,000 times straight line on the film with a stylus change every 20,000 times with Force: 250gf, Speed: 60mm/sec by R0.8 polaceteal stylus.

Note 3: Pitting test, Pit 1, 000, 000 times on the film with R0.8 silicon rubber with Force: 250gf and Speed: 2 times/sec.

10. Inspection

Standard acceptance/rejection criteria for TFT module.

10.1. Inspection condition

Ambient conditions:

  •       Temperature: 25±°C
  •       Humidity: (60±10) %RH
  •       Illumination: Single fluorescent lamp non-directive (300 to 700 lux)

Viewing distance:

35±5cm between inspector bare eye and LCD.

Viewing Angle:

U/D: 45°/45°, L/R 45°/45°

10.2 Inspection standard

Item Criterion
Black spots, white spots, light leakage, Foreign Particle (round Type)
Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.3 mm 3
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0
Size >= 5”
Average Diameter Qualified Qty
D<0.2 mm Ignored
0.2 mm < D < 0.3 mm 4
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0
LCD black spots, white spots, light leakage (line Type)
Size < 5”
Length Width Qualified Qty
W< 0.02 Ignored
L < 3.0 0.02 < W <0.05 2
L < 2.5 0.05 < W <0.08
0.08 < W 0
Size >= 5”
Length Width Qualified Qty
W< 0.02 Ignored
L < 3.0 0.02 < W <0.05 4
L < 2.5 0.05 < W <0.08
0.08 < W 0
Item Criterion
Clear spots
Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.3 mm 3
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0
Size >= 5”
Average Diameter Qualified Qty
D<0.2 mm Ignored
0.2 mm < D < 0.3 mm 4
0.3 mm < D < 0.5 mm 2
0.5 mm < D 0

*Spots density: 10 mm

Polarizer bubbles
Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.5 mm 3
0.5 mm < D < 1 mm 2
1 mm < D 0
Total Q’ty 3
Size >= 5”
Average Diameter Qualified Qty
D<0.25 mm Ignored
0.25 mm < D < 0.5 mm 3
0.5 mm < D 0
Electrical Dot Defect
Size < 5”
item Qualified Qty
Black do defect 4
Bright dot defect 2
Total Dot 5
Size >= 5”
item Qualified Qty
Black do defect 5
Bright dot defect 2
Total Dot 5
Item Criterion
Touch panel spot
Size < 5”
Average Diameter Qualified Qty
D < 0.2 mm Ignored
0.2 mm < D < 0.4 mm 5
0.4 mm < D < 0.5 mm 2
0.5 mm < D 0
Size >= 5”
Average Diameter Qualified Qty
D<0.25 mm Ignored
0.25 mm < D < 0.5 mm 4
0.5 mm < D 0
Touch panel White Line Scratch
Size < 5”
Length Width Qualified Qty
W< 0.02 Ignored
L < 3.0 0.02 < W <0.05 2
L < 2.5 0.05 < W <0.08
0.08 < W 0
Size >= 5”
Length Width Qualified Qty
W< 0.03 Ignored
L < 5.0 0.03 < W <0.05 2
0.05 < W 0

11. Reliability test

NO. TEST ITEM TEST CONDITION
1 High Temperature Storage 80±2°C/240hours
2 Low Temperature Storage -30±2°C/240hours
3 High Temperature Operating 70±2°C/240hours
4 Low Temperature Operating -20±2°C/240hours
 

5

Temperature Cycle -30±2°C~25~80±2°C × 20 cycles

(30min.) (5min.)    (30min.)

6 Damp Proof Test 60°C ±5°C × 90%RH/240hours
7 Vibration Test Frequency 10Hz~55Hz

Amplitude of vibration : 1.5mm

Sweep: 10Hz~55Hz~10Hz

X, Y, Z 2 hours for each direction.

8 Package Drop Test Height:60 cm

1 corner,3 edges,6 surfaces

9 ESD Test Air: ±4KV 150pF/330Ω 5 times

Contact: ±2KV 150pF/330Ω 5 time

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