DT035BTFT

TFT LCD Module Product Specification DT035BTFT 3.5” (320(RGB) x 240 DOTS) TFT Module December 14, 2020 Remark: Contents in this document are subject to change without notice. No part of this document may be reproduced or transmitted in any form or by any means, electronic or mechanical, for any purpose, without the express written permission of Displaytech. Displaytech Email: sales@displaytech.com.hk Website: http://www.displaytech.com.hk Displaytech DT035BTFT Rev 2.1 Revision Record REV 0.0 CHANGES First release DATE Nov 25, 2015 (Ref. 1.0 20151125) 2.0 2.1 • Updated the drawing details; • Updated the interface signals table; • Updated the electrical characteristics. Updated details. (Ref 2.1 20201126) 1 Nov 4, 2020 Dec 14, 2020 Displaytech DT035BTFT Rev 2.1 Table of Content Revision Record ............................................................................ 1 1. Scope ...................................................................................... 3 2. Application ............................................................................. 3 3. General Information............................................................... 3 4. Outline Drawing ..................................................................... 4 5. Interface Signals .................................................................... 5 6. Absolute Maximum Ratings.................................................. 5 6.1 Electrical absolute maximum ratings .............................................. 5 6.2 Environment conditions .................................................................... 5 7. Electrical Specifications ....................................................... 6 7.1 Electrical characteristics .................................................................. 6 7.2 LED backlight ..................................................................................... 6 8. Command / AC Timing .......................................................... 7 8.1 AC Electrical Characteristics ............................................................ 7 8.2 24 Bit RGB Mode (@ SEL\[3:0] = 1100 or 1101) .............................. 7 8.3 Timing Diagram .................................................................................. 8 8.4 Vertical Timing Diagram (HV Mode) ................................................. 9 8.5 Vertical Timing Diagram (DE Mode) ................................................. 9 8.6 Input Data Timing (24 bit RGB mode for 960 x 240 @ SEL\[3:0] = 1100b) ..................................................................................................... 10 9. Optical Specification ........................................................... 10 10. Environmental / Reliability Tests ........................................ 13 11. Precautions for Use of LCD Modules ................................ 13 11.1 Safety .............................................................................................. 13 11.2 Handling ......................................................................................... 13 11.3 Static electricity ............................................................................. 14 11.4 Storage ........................................................................................... 14 11.5 Cleaning .......................................................................................... 14 11.6 Cautions for installing and assembling ....................................... 14 2 Displaytech DT035BTFT Rev 2.1 1. Scope This data sheet is to introduce the specification of DT035BTFT, active matrix TFT module. It is composed of a color TFT-LCD panel, driver IC, FPC and a backlight unit. The 3.5” display area contains 320 (RGB) x 240 pixels. 2. Application Digital equipment which need color display, mobile phone, mobile navigator/video systems. 3. General Information Item Contents Unit Size 3.5 inch Resolution 320(RGB) x 240 / Interface RGB / Technology Type a-Si TFT / Pixel Configuration R.G.B. Vertical Stripe / Pixel Pitch 0.219 x 0.219 mm Outline Dimension (W x H x D) 76.90 x 64.00 x 3.05 mm Active Area 70.08 x 52.56 mm Display Mode Transmissive, Normally White / Backlight Type LED / Display Driver IC NV3035 / Viewing Direction 12 o’clock / 3 Displaytech DT035BTFT 4. Outline Drawing DT035BTFT 4 Rev 2.1 Displaytech DT035BTFT Rev 2.1 5. Interface Signals 6. Absolute Maximum Ratings 6.1 Electrical absolute maximum ratings Parameter Power supply voltage Symbol VDD MIN -0.3 MAX 5.0 Unit V Remark 6.2 Environment conditions Parameter Operating Temperature Storage Temperature Symbol TOPR TSTG MIN -20 -30 5 MAX +70 +80 Unit °C °C Remark Displaytech DT035BTFT Rev 2.1 7. Electrical Specifications 7.1 Electrical characteristics Item Supply voltage Low level Input signal voltage High level Symbol VDD VIL VIH MIN 3 GND 0.8xVDD TYP 3.3 - MAX 3.6 0.2xVDD VDD Unit V V V Remark 7.2 LED backlight Item Forward current Forward voltage LED life time Symbol IF VF - MIN 16.8 - TYP 20 19.2 25,000 MAX 25 21.6 - Unit mA V Hr Ta=25°C Remark Notes: 1. The “LED life time” is defined as the module brightness decrease to 50% original brightness at Ta=25℃ and IL=20mA. The“LED life time”could be decreased if operating IL is larger than 20mA. 2. LED power consumption: 384mW (Typical). 6 Displaytech DT035BTFT 8. Command / AC Timing 8.1 AC Electrical Characteristics 8.2 24 Bit RGB Mode (@ SEL\[3:0] = 1100 or 1101) 7 Rev 2.1 Displaytech DT035BTFT 8.3 Timing Diagram 8 Rev 2.1 Displaytech DT035BTFT 8.4 Vertical Timing Diagram (HV Mode) 8.5 Vertical Timing Diagram (DE Mode) 9 Rev 2.1 Displaytech DT035BTFT Rev 2.1 8.6 Input Data Timing (24 bit RGB mode for 960 x 240 @ SEL\[3:0] = 1100b) 9. Optical Specification Ta=25°C Item Contrast ratio Response time View angles Red Green Chromaticity Blue White NTSC Luminance Uniformity Symbol CR Tr / Tf QT QB QL QR x y x y x y x y Condition q=0° 25°C MIN 350 50 75 CR≧10 Brightness is on L U 10 TYP 500 10 65 55 65 65 0.51 0.34 0.31 0.56 0.15 0.14 0.28 0.33 60 600 80 MAX - Unit ms Degree Remark Note 1, 2 Note 1, 3 Note 4 Note 1, 5 % cd/m2 % Note 5 Note 1, 6 Note 1, 7 Displaytech DT035BTFT Rev 2.1 Note 1: Definition of optical measurement system. Note 2: Contrast ratio is defined as follow: Note 3: Response time is defined as follow: Response time is the time required for the display to transition from black to white (Rise time, Tr) and from white to black (Decay Time, Tf). Note 4: Viewing angle range is defined as follow: Viewing angle is measured at the center point of the LCD. 11 Displaytech DT035BTFT Rev 2.1 Note 5: Color chromaticity is defined as follow (CIE1931) Color coordinates measured at center point of LCD. Note 6: Luminance is defined as follow: Luminance is defined as the brightness of all pixels “White” at the center of display area on optimum contrast. Note 7: Luminance Uniformity is defined as follow: Active area is divided into 9 measuring areas (Refer Fig.2). Every measuring point is placed at the center of each measuring area. Fig. 2 Definition of uniformity 12 Displaytech DT035BTFT Rev 2.1 10. Environmental / Reliability Tests No 1 2 3 4 5 6 Test Item High Temp Operation Low Temp Operation High Temp Storage Low Temp Storage High Temp & High Humidity Storage Thermal Shock (Non-operation) 7 ESD (Operation) 8 Vibration (Non-operation) 9 Shock (Non-operation) 10 Package Drop Test Inspection Appearance Alignment of LCD panel Electrical current Function / Display Condition Ta=+70°C, 120hrs Ta=-20°C, 120hrs Ts=+80°C, 120hrs Ts=-30°C, 120hrs Ts=+60°C, 90% RH, 120hrs -30°C 30 min ~ +80°C 30 min, Change time: 5 min, 10 cycles C=150pF, R=330Ω, 5points/panel Air:±8KV, 5 times; Contact:±4KV, 5 times Frequency range:10~55Hz, Stroke:1.5mm Sweep:10Hz~55Hz~10Hz 2 hours for each direction of X.Y.Z. 60G 6ms, ±X, ±Y, ±Z, 3 times, for each direction Height: 80cm, 1 corner, 3 edges, 6 surfaces Judgment Criteria Per table below Per table below Per table below Per table below Per table below (polarizer discoloration is excluded) Per table below Per table below Per table below Per table below Per table below Criterion (after test) No crack on the FPC, on the LCD panel No bubbles in the LCD panel No other defects of alignment in active area Within device specifications No broken circuit, no short circuit or no black line No other defects of display 11. Precautions for Use of LCD Modules 11.1 Safety The liquid crystal in the LCD is poisonous. Do not put it in your mouth. If the liquid crystal touches your skin or clothes, wash it off immediately using soap and water. 11.2 Handling a. The LCD and touch panel is made of plate glass. Do not subject the panel to mechanical shock or to excessive force on its surface. b. Do not handle the product by holding the flexible pattern portion in order to assure the reliability. c. Transparency is an important factor for the touch panel. Please wear clear finger sacks, gloves and mask to protect the touch panel from finger print or stain and also hold the portion outside the view area when handling the touch panel. d. Provide a space so that the panel does not come into contact with other components. e. To protect the product from external force, put a covering lens (acrylic board or similar board) and keep an appropriate gap between them. f. Transparent electrodes may be disconnected if the panel is used under environmental conditions where dew condensation occurs. g. Property of semiconductor devices may be affected when they are exposed to light, possibly resulting in IC malfunctions. 13 Displaytech DT035BTFT Rev 2.1 h. To prevent such IC malfunctions, your design and mounting layout shall be done in the way that the IC is not exposed to light in actual use. 11.3 Static electricity a. Ground soldering iron tips, tools and testers when they are in operation. b. Ground your body when handling the products. c. Power on the LCD module before applying the voltage to the input terminals. d. Do not apply voltage which exceeds the absolute maximum rating. e. Store the products in an anti-electrostatic bag or container. 11.4 Storage a. Store the products in a dark place at +25°C±10°C with low humidity (40% RH to 60% RH). Don’t expose to sunlight or fluorescent light. b. Storage in a clean environment, free from dust, active gas, and solvent. 11.5 Cleaning a. Do not wipe the touch panel with dry cloth, as it may cause scratch. b. Wipe off the stain on the product by using soft cloth moistened with ethanol. Do not allow ethanol to get in between the upper film and the bottom glass. It may cause peeling issue or defective operation. Do not use any organic solvent or detergent other than ethanol. 11.6 Cautions for installing and assembling a. Bezel edge must be positioned in the area between the Active area and View area. The bezel may press the touch screen and cause activation if the edge touches the active area. A gap of approximately 0.5mm is needed between the bezel and the top electrode. It may cause unexpected activation if the gap is too narrow. There is a tolerance of 0.2 to 0.3mm for the outside dimensions of the touch panel and tail. A gap must be made to absorb the tolerance in the case and connector. b. In order to make the display assembly stable and firm, DISPLAYTECH recommends to design some supporting at the display backside, especially for the display with tape-attached touch panel, such supporting is important and essential, or else, the display may drop-off from front after some period of time. c. Do not display the fixed pattern for a long time because it may develop image sticking due to the LCD structure. If the screen is displayed with fixed pattern, use a screen saver. 14