4DLCD-32QA

4DLCD-32QA Datasheet Revision 1.2 Copyright © 2023 4D Systems Content may change at any time. Please refer to the resource centre for latest documentation. Contents 1. Specifications 3 1.1. Mechanical Specifications 4 1.2. Pin Descriptions 5 2. Electrical Specifications 7 2.1. Absolute Maximum Ratings 7 2.2. DC Characteristics 7 2.3. LED Backlight Maximum Ratings 8 3. Optical Characteristics 9 4. Touch Characteristics 10 5. Initialisation Codes 11 5.1. Command Definitions 11 5.2. Init Code 12 6. Quality Testing 13 6.1. Reliability Test 13 6.2. Color Performance 13 7. Precautions for Using LCD Modules 14 7.1. Handing Precautions 14 7.2. Storage Precautions 16 8. Using LCD Modules 17 8.1. Installing LCD Modules 17 8.2. Precautions for Operation 18 8.3. Safety 18 8.4. Return LCM under Warranty 19 9. Revision History 4D Systems 20 DATASHEET Page 2 of 20 4DLCD-32QA Specifications 1. Specifications General Specifications S.No. Items Specifications 1 Screen size (inch) 3.2" Diagonal 2 LCD Type TFT, Normally White, TRANSMISSIVE 3 Colors 65K Colors 4 Display Resolution 240 x RGB x 320 5 Module Outline (mm) 55.04 x 77.7 x 2.4 (W x H x T) 6 Active Area (mm) 48.60 x 64.80 (W x H) 7 Touch Panel Dimension 76.2 x 53.4 x 1.2 8 Viewing Direction 12:00 O' Clock 9 Pixel Arrangement RGB Vertical Stripe 10 Interface 8080, 8/16 bit CPU Interface 11 Assembly Type Connector type FPC 12 Driver IC ILI9341 13 Backlight 6 x White LED 14 Pixel Arrangement RGB Vertical Stripe 4D Systems DATASHEET Page 3 of 20 4DLCD-32QA Mechanical Specifications 1.1. Mechanical Specifications 4D Systems DATASHEET Page 4 of 20 4DLCD-32QA Pin Descriptions 1.2. Pin Descriptions 4D Systems Pin Symbol I/O Function 1 GND Power Ground 2 GND Power Ground 3 IMO(8/16) Control Interface Mode 0: for 16bit Mode 1: for 8bit Mode 4 FMARK Control Output a frame head pulse signal 5 Y- (YD) INPUT Touch Panel Y 6 X+ (XL) INPUT Touch Panel X 7 RESET INPUT A Reset Signal 8 RS INPUT A Register select signal 9 CS INPUT A Chip select signal 10 RD INPUT Read signal 11 WR INPUT Write signal 12 VCC Power 3.3V: Analog Power Supply 13 NC - Not Connected 14 GND Power Ground 15~22 DB15~ DB08 I/O Parallel interface data bus 23 DB7 I/O Parallel interface data bus 24 DB6 I/O Parallel interface data bus 25 DB0 I/O Parallel interface data bus 26 DB1 I/O Parallel interface data bus 27 DB2 I/O Parallel interface data bus 28 DB3 I/O Parallel interface data bus 29 DB4 I/O Parallel interface data bus 30 DB5 I/O Parallel interface data bus 31 Y+ (YU) INPUT Touch Panel Y 32 X- (XR) INPUT Touch Panel X 33 LEDA LED Anode 34 LEDK1 LED cathode DATASHEET Page 5 of 20 4DLCD-32QA 4D Systems Pin Descriptions Pin Symbol I/O 35 LEDK2 LED cathode 36 LEDK3 LED cathode 37 LEDK4 LED cathode 38 LEDK5 LED cathode 39 LEDK6 LED cathode 40 GND Power Ground DATASHEET Function Page 6 of 20 4DLCD-32QA Electrical Specifications 2. Electrical Specifications 2.1. Absolute Maximum Ratings Absolute Maximum Ratings Items Symbol Condition Min. Max. Unit Power supply Voltage V CI Ta = +25°C -0.3 +4.6 V Operating Temperature T OP - -20 +70 °C Storage Temperature T ST - -30 +80 °C Storage Humidity HD - 20 90 %RH Caution Any stresses exceeding the absolute Maximum Ratings may cause substantial damage to the device. 2.2. DC Characteristics DC Characteristics Items Symbol Conditions Min. Typ. Max. Unit Power supply voltage V CI Ta = +25°C 2.5 - 3.3 V Input High Voltage V IH 0.8V CI - V CI V Input Low Voltage V IL GND - 0.2V CI V Output High Voltage V OH 0.8V CI - - V Output Low Voltage V OL - - 0.2V CI V - 30 - mW Power consumption 4D Systems P LCD Excluding Backlight DATASHEET Page 7 of 20 4DLCD-32QA LED Backlight Maximum Ratings 2.3. LED Backlight Maximum Ratings LED Backlight Maximum Ratings Items Symbol Forward Current I LED Forward Voltage Power Dissipation 4D Systems Conditions Min. Typ. Max. Unit Comments Ta = +25°C 18 20 25 mA Single LED VF 3.2 3.3 3.6 V Single LED PD 288 330 450 mW DATASHEET Backlight unit Page 8 of 20 4DLCD-32QA Optical Characteristics 3. Optical Characteristics The following items are measured under stable conditions. The optical characteristics should be measured in a dark room or equivalent state with the methods shown in Note (2). Optical Characteristics @ Ta = 25 ± 2°C Item Symbol Condition Min Typ Max Unit L White pattern 160 200 - cd/m2 Response Time TR + TF θ=Ø=0 - 25 - ms Contrast Ratio CR At the Center point of A.A 300 350 - Color Chromaticity White WX θ=Ø=0 0.237 0.313 0.353 Color Chromaticity White WY 0.289 0.329 0.369 - 110 - Deg - 120 - Deg Brightness Viewing Angle Horizontal CR ≥ 10 Viewing Angle Vertical Note 1. These parameters are measured by C light. 2. Definition of Viewing Angle The Screens used are the highest rated 'Grade A' Displays which allow for 0-4 defective pixels. A defective pixel could be solid Black (Dead), Red, Green or Blue. 4D Systems is not liable for a return/replacement for any Display that has 4 or fewer defective pixels. 4D Systems DATASHEET Page 9 of 20 4DLCD-32QA Touch Characteristics 4. Touch Characteristics Touch Parameters Parameter Conditions Min Typ Max Units Operating Voltage - 5 - V Linearity ±1.5 % Terminal Resistance X X film side 300 400 800 Ohm Terminal Resistance Y Y film side 300 600 800 Ohm Operating Temperature -10 - 60 °C Storage Temperature -20 - 70 °C Transmittance 80 - - % Life Time – Tapping Durability 1 - - Million 1 - - Million 10 ms Life Time – Pen Durability Stylus Pen or Finger Press Response Time • ITO Film: Single Layer/Clear Hard Coating • Tail Type: FPC by Golden Plated • Connection: FPC Connector • RoHS Compliant 4D Systems DATASHEET Page 10 of 20 4DLCD-32QA Initialisation Codes 5. Initialisation Codes 5.1. Command Definitions Command Definitions READ_DISPLAY_PIXEL_FORMAT 0x0C SLEEP_OUT 0x11 GAMMA_SET 0x26 DISPLAY_OFF 0x28 DISPLAY_ON 0x29 SET_COLUMN_ADDRESS 0x2A SET_PAGE_ADDRESS 0x2B WRITE_MEMORY 0x2C READ_MEMORY 0x2E MEMORY_ACCESS_CONTROL 0x36 WRITE_MEMORY_CONTINUE 0x3C READ_MEMORY_CONTINUE 0x3E PIXEL_FORMAT_SET 0x3A FRAME_RATE_CONTROL 0xB1 DISPLAY_FUNCTION_CONTROL 0xB6 POWER_CONTROL_1 0xC0 POWER_CONTROL_2 0xC1 VCOM_CONTROL_1 0xC5 VCOM_CONTROL_2 0xC7 POWER_CONTROL_A 0xCB POWER_CONTROL_B 0xCF POSITIVE_GAMMA_CORRECTION 0xE0 NEGATIVE_GAMMA_CORRECTION 0xE1 DRIVER_TIMING_CONTROL_A 0xE8 DRIVER_TIMING_CONTROL_B 0xEA POWER_ON_SEQUENCE_CONTROL 0xED UNDOCUMENTED_0xEF 0xEF ENABLE_3G 0xF2 INTERFACE_CONTROL 0xF6 4D Systems DATASHEET Page 11 of 20 4DLCD-32QA Init Code 5.2. Init Code Format: (Command, Data1, Data2...DataN) INTERFACE_CONTROL, 0x01, 0x01, 0x00, UNDOCUMENTED_0xEF, 0x03, 0x80, 0x02, POWER_CONTROL_B, 0x00, 0xF2, 0xA0, POWER_ON_SEQUENCE_CONTROL, 0x64, 0x03, 0x12, 0x81, POWER_CONTROL_A, 0x39, 0x2C, 0x00, 0x34, 0x02, DRIVER_TIMING_CONTROL_B, 0x00, 0x00, DRIVER_TIMING_CONTROL_A, 0x85, 0x10, 0x7A, POWER_CONTROL_1, 0x21, POWER_CONTROL_2, 0x11, VCOM_CONTROL_1, 0x3F, 0x3C, VCOM_CONTROL_2, 0xC6, PIXEL_FORMAT_SET, 0x55, MEMORY_ACCESS_CONTROL, 0x00, FRAME_RATE_CONTROL, 0x00, 0x1B, DISPLAY_FUNCTION_CONTROL, 0x0A, 0xA2, ENABLE_3G, 0x00, GAMMA_SET, 0x01, POSITIVE_GAMMA_CORRECTION, 0x0f, 0x24, 0x21, 0x0F, 0x13, 0x0A, 0x52, 0xC9, 0x3B, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, NEGATIVE_GAMMA_CORRECTION, 0x00, 0x1B, 0x1E, 0x00, 0x0C, 0x04, 0x2F, 0x36, 0x44, 0x0a, 0x1F, 0x0F, 0x3F, 0x3F, 0x0F, WRITE_MEMORY, SLEEP_OUT, DelayMS 120, DISPLAY_ON 4D Systems DATASHEET Page 12 of 20 4DLCD-32QA Quality Testing 6. Quality Testing The LCD Module should be designed to meet a minimum MTTF value of 50,000 hours under normal operating conditions. T = 25 + 2°C, Indoors, Not exposed to sunlight. Note, Backlight lifetime is not included. Criterion: • No defect of Operational Function at Room Temperature is allowable. • The leakage current should be below double the initial value. 6.1. Reliability Test No. ITEM CONDITION Pass/Fail 1 High Temperature Operating 70°C, 240Hrs Pass 2 Low Temperature Operating -20°C, 240Hrs Pass 3 High Temperature Non-Operating 80°C, 240Hrs Pass 4 Low Temperature Non-Operating -30°C, 240Hrs Pass 5 High Temperature/Humidity Non-Operating 50°C, 90%RH, 240Hrs Pass 6 Temperature Shock Non-Operating -30°C, 80°C, 10 cycles 30min→5min→30min Pass 7 Electrostatic Discharge HBM: +2KV Pass Note 1. Test after 24 hrs at room temperature. 2. The sampling above is individual for each reliability test. 3. The color fading of the polarization filter should not care. 4. The entire reliability testing chamber above is using D.I. water (Min value: 1.0MOhm-cm) 5. In case of a malfunction defect caused by the ESD Damage, If it could be recovered to a normal state after resetting, it would be considered a good part. 6.2. Color Performance S. No. 4D Systems ITEM CONDITION 1 Luminance > 50% 2 NTSC > 70% 3 Contrast Ratio > 50% DATASHEET Page 13 of 20 4DLCD-32QA Precautions for Using LCD Modules 7. Precautions for Using LCD Modules 7.1. 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. 4D Systems DATASHEET Page 14 of 20 4DLCD-32QA Handing Precautions • 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. 4D Systems DATASHEET Page 15 of 20 4DLCD-32QA Storage Precautions 7.2. 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 4D Systems DATASHEET Page 16 of 20 4DLCD-32QA Using LCD Modules 8. Using LCD Modules 8.1. Installing LCD Modules The hole in the printed circuit board is used to fix LCM as shown in the picture below. Attend to the following items when installing the LCM. 1. Cover the surface with a transparent protective plate to protect the polarizer and LC cell. 2. When assembling the LCM into other equipment, the spacer to the bit between the LCM and the fitting plate should have enough height to avoid causing stress to the module surface, refer to the individual specifications for measurements. The measurement tolerance should be ±0.1mm. Precaution for assembling the module with BTB connector: Please note the position of the male and female connector position, don't assemble or assemble like the method that the following picture shows. 4D Systems DATASHEET Page 17 of 20 4DLCD-32QA Precautions for Operation 8.2. Precautions for Operation 1. The viewing angle varies with the change in liquid crystal driving voltage (VLCD). Adjust VLCD to show the best contrast. 2. It is an indispensable condition to drive LCDs within the specified voltage limit since a higher voltage than the limit causes a shorter LCD life. An electrochemical reaction due to direct current causes LCD's undesirable deterioration so the use of a direct current drive should be avoided. 3. Response time will be extremely delayed at a lower temperature than the operating temperature range and on the other hand at higher temperatures it shows dark color in them. However, those phenomena do not mean malfunction or out-of-order with LCDs, which will come back at the specified operating temperature. 4. If the display area is pushed hard during operation, the display will become abnormal. However, it will return to normal if it is turned off and then back on. 5. Slight dew depositing on terminals is a cause for electrochemical reaction resulting in terminal open circuit. Usage under the maximum operating temperature, 50%RH or less is required. 6. Input each signal after the positive/negative voltage becomes stable. 7. Please keep the temperature within the specified range for use and storage. Polarization degradation, bubble generation or polarizer peel-off may occur with high temperature and high humidity. 8.3. Safety • It is recommended to crush damaged or unnecessary LCDs into pieces and wash them off with solvents such as acetone and ethanol, which should later be burned. • If any liquid leaks out of a damaged glass cell and comes in contact with the hands, wash off thoroughly with soap and water. Limited Warranty. 4D Systems DATASHEET Page 18 of 20 4DLCD-32QA Return LCM under Warranty 8.4. Return LCM under Warranty No warranty can be granted if the precautions stated above have been disregarded. The typical examples of violations are • Broken LCD glass. • PCB eyelet is damaged or modified. • PCB conductors damaged. • Circuit modified in any way, including the addition of components. • PCB is tampered with by grinding, engraving or painting varnish. Module repairs will be invoiced to the customer upon mutual agreement. Modules must be returned with a sufficient description of the failures or defects. Any connectors or cables installed by the customer must be removed completely without damaging the PCB eyelet, conductors and terminals. 4D Systems DATASHEET Page 19 of 20 4DLCD-32QA Revision History 9. Revision History Document Revision REVISION 1.2 4D Systems DATE 20/01/2023 COMMENT Modified datasheet for web-based documentation DATASHEET Page 20 of 20