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OKRA OKRA0750RWU790F30 User Manual

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EPD Module User Manual
Specification for 7.5 inch EPD
Model NO. : OKRA0750RWU790F30
OKRA's Confirmation:
Prepared by
Checked by
Approved by
Customer approval:
Customer
Approved by
Date
1／41

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Summary of Contents for OKRA OKRA0750RWU790F30

  • Page 1 EPD Module User Manual Specification for 7.5 inch EPD Model NO. : OKRA0750RWU790F30 OKRA’s Confirmation: Prepared by Checked by Approved by Customer approval: Customer Approved by Date 1／41...
  • Page 2 EPD Module User Manual Revision History Version Content Date Producer New release 2020/11/13 2／41...

  • Page 3: Table Of Contents

    EPD Module User Manual CONTENTS 1. Over View........................5 2. Features.........................5 3. Mechanical Specification..................... 6 4.Mechanical Drawing of EPD Module................7 5. Input/output Pin Assignment..................8 6. Electrical Characteristics ....................9 6.1 Absolute Maximum Rating.................. 9 6.2 Panel DC Characteristics..................10 6.3 Panel AC Characteristics..................11 6.3.1 MCU Interface Selection................11 6.3.2 MCU Serial Interface (4-wire SPI)............
  • Page 4 EPD Module User Manual 12.5 Ghosting test method..................36 12.6 Inspection standard...................37 12.6.1 Electric inspection standard..............37 12.6.2 Appearance inspection standard..............38 13.Packaging........................40 14. Handling, Safety, and Environment Requirements..........41 4／41...

  • Page 5: Over View

    EPD Module User Manual 1. Over View OKRA0750RWU790F30 is an Active Matrix Electrophoretic Display (AM EPD), with interface and a reference system design. The display is capable to display images at 1-bit white, black and red full display capabilities. The 7.5 inch active area contains 480×800 pixels. The module is a TFT-array driving electrophoresis display, with integrated circuits including gate driver, source driver, MCU interface, timing controller, oscillator, DC-DC, SRAM, LUT, VCOM.

  • Page 6: Mechanical Specification

    EPD Module User Manual 3. Mechanical Specification Parameter Specifications Unit Remark Screen Size Inch Display Resolution 800(H)×480(V) Pixel DPI:124 Active Area 163.2×97.92 Pixel Pitch 0.204×0.204 Pixel Configuration Rectangle Outline Dimension 170.2(H)×111.2 (V) ×1.20(D) Weight 43.9±0.5 Symbol Parameter Conditions Typ. Units Notes Black State L* value Black State A* value...

  • Page 7: Mechanical Drawing Of Epd Module

    EPD Module User Manual 4.Mechanical Drawing of EPD Module Confirmation: DATE REV. MODIFICATION NOTE 20.07.10 OKRA750RWU790F30 ANGLES± 5° 1 DISPLAY MODULE 7.5" ARRAY FOR EPD .X=± 0.4mm 2 DRIVER IC:UC8179C RoHS .XX=± 0.20mm 3 RESOLUTION:480gateX800source DY FU CC ZHENG SY ZHAO 4 PIXEL SIZE:0.204mmX0.204mm .XXX=±...

  • Page 8: Input/Output Pin Assignment

    EPD Module User Manual 5. Input/output Pin Assignment Name Description Remark Keep Open Do not connect with other NC pins N-Channel MOSFET Gate Drive Control RESE Current Sense Input for the Control Loop Keep Open Do not connect with other NC pins VSH2 Positive Source driving voltage(Red) TSCL...

  • Page 9: Electrical Characteristics

    EPD Module User Manual I = Input Pin, O =Output Pin, I/O = Bi-directional Pin (Input/Output), P = Power Pin, C = Capacitor Pin Note 5-1: This pin (CS#) is the chip select input connecting to the MCU. The chip is enabled for MCU communication only when CS# is pulled LOW.

  • Page 10: Panel Dc Characteristics

    2. The deep sleep power is the consumed power when the panel controller is in deep sleep mode. 3. The listed electrical/optical characteristics are only guaranteed under the controller & waveform provided by OKRA. 4. Electrical measurement：Tektronix oscilloscope - MDO3024，...

  • Page 11: Panel Ac Characteristics

    EPD Module User Manual Tektronix current probe–TCP0030A. 6.3 Panel AC Characteristics 6.3.1 MCU Interface Selection Provides 3-wire/4-wire serial interface for command and display data transferred from the MCU. The serial interface supports 8-bit mode. Data can be input/output by clocks while the chip is active (CSB =LOW).

  • Page 12: Mcu Serial Interface (3-Wire Spi)

    EPD Module User Manual 6.3.3 MCU Serial Interface (3-wire SPI) Data / Command is recognized with the first bit transferred. Data are transferred in the unit of 9 bits. To prevent malfunction due to noise, it is recommended to set the CSB signal to HIGH every 9 bits. (The serial counter is reset at the rising edge of the CSB signal.) The MSB bit of data will be output at SDA pin after the 1 st SCL falling edge, if the 1 st input data at SDA is high.
  • Page 13 EPD Module User Manual Serial Interface Timing Characteristics 13／41...

  • Page 14: Command Table

    EPD Module User Manual 7.Command Table W/R: 0: Write Cycle / 1: Read Cycle C/D: 0: Command / 1: Data D7-D0: –: Don’t Care PANEL SETTING (PSR) (REGISTER: R00H) LUT selection REG: 0: LUT from OTP. (Default) 1: LUT from register. Black / White / Red KW/R: 0: Pixel with Black/White/Red, KWR mode.
  • Page 15 EPD Module User Manual 2) POWER SETTING (PWR) (R01H) BD_EN: Border LDO enable 0 : Border LDO disable (Default) Border level selection: 00b: VCOM 01b: VDH 10b: VDL 11b: VDHR 1 : Border LDO enable Border level selection: 00b: VCOM 01b: VBH(VCOM-VDL) 10b:VBL(VCOM-VDH) 11b: VDHR VSR_EN: Source LV power selection 0 : External source power from VDHR pins...
  • Page 16 EPD Module User Manual 16／41...
  • Page 17 EPD Module User Manual 3) POWER OFF (POF) (R02H) After the Power OFF command, the driver will be powered OFF. Refer to the POWER MANAGEMENT section for the sequence. This command will turn off booster, controller, source driver, gate driver, VCOM, and temperature sensor, but register data will be kept until VDD turned OFF or Deep Sleep Mode.
  • Page 18 EPD Module User Manual BT_PHB[5:3]: Driving strength of phase B 000b: strength 1 001b: strength 2 010b: strength 3 011b: strength 4 100b: strength 5 101b: strength 6 110b: strength 7 111b: strength 8 (strongest) BT_PHB[2:0]: Minimum OFF time setting of GDR in phase B 000b: 0.27uS 001b: 0.34uS 010b: 0.40uS 011b: 0.54uS 100b: 0.80uS 101b: 1.54uS 110b: 3.34uS 111b: 6.58uS BT_PHC1[5:3]: Driving strength of phase C1...
  • Page 19 EPD Module User Manual 8) DATA START TRANSMISSION 1 (DTM1) (R10H) This command starts transmitting data and write them into SRAM. In KW mode, this command writes “OLD” data to SRAM. In KWR mode, this command writes “K/W” data to SRAM. In Program mode, this command writes “OTP”...
  • Page 20 EPD Module User Manual 11) VCOM LUT (LUTC) (R20H) This command stores VCOM Look-Up Table with 10 groups of data. Each group contains information for one state and is stored with 6 bytes (byte 2~7, 8~13, 14~19, 20~25, …), while the sixth byte indicates how many times that phase will repeat.
  • Page 21 EPD Module User Manual 12) W2W LUT (LUTWW) (R21H) This command stores White-to-White Look-Up Table with 7 groups of data. Each group contains information for one state and is stored with 6 bytes (byte 2~7, 8~13, 14~19, 20~25, …), while the sixth byte indicates how many times that phase will repeat.
  • Page 22 EPD Module User Manual 13) K2W LUT (LUTKW / LUTR) (R22H) This command stores White-to-White Look-Up Table with 10 groups of data. Each group contains information for one state and is stored with 6 bytes (byte 2~7, 8~13, 14~19, 20~25, …), while the sixth byte indicates how many times that phase will repeat.
  • Page 23 EPD Module User Manual 16) BORDER LUT (LUTBD) (R25 H ) This command stores White-to-White Look-Up Table with 7 groups of data. Each group contains information for one state and is stored with 6 bytes (byte 2~7, 8~13, 14~19, 20~25, …), while the sixth byte indicates how many times that phase will repeat.
  • Page 24 EPD Module User Manual 17) LUT O PTION (LUTOPT) (R2A H ) This command sets XON control enable. STATE_XON[9:0]: All Gate ON (Each bit controls one state, STATE_XON [0] for state-1, STATE_XON [1] for state-2 …..) 00 0000 0000b: no All-Gate-ON 00 0000 0001b: State-1 All-Gate-ON 00 0000 0011b: State-1 and State2 All-Gate-ON 18) PLL CONTROL(PLL) (R30 H )
  • Page 25 EPD Module User Manual 19) TEMPERATURE SENSOR CALIBRATION (TSC) (R40 H ) 20) VCOM AND DATA INTERVAL SETTING (CDI) (R50 H ) This command indicates the interval of VCOM and data output. When setting the vertical back porch, the total blanking will be kept (20 Hsync). Border Hi-Z control BDZ: 0: Border output Hi-Z disabled (default)
  • Page 26 EPD Module User Manual KW mode (KW/R=1) N2OCP: Copy frame data from NEW data to OLD data enable control after display refresh with NEW/OLD in KW mode. 0: Copy NEW data to OLD data disabled (default) 1: Copy NEW data to OLD data enabled DDX[1:0]: Data polarity.
  • Page 27 EPD Module User Manual 21) TCON S ETTING (TCON) (R60 H ) 27／41...
  • Page 28 EPD Module User Manual 22) RESOLUTION SETTING (TRES) (R61 H ) This command defines resolution setting. HRES[9:3]: Horizontal Display Resolution (Value range: 01h ~ 64h) VRES[9:0]: Vertical Display Resolution (Value range: 001h ~ 258h) Active channel calculation, assuming HST[9:0]=0, VST[9:0]=0: Gate: First active gate = G0;...
  • Page 29 EPD Module User Manual The command reads the product revision, LUT revision and chip revision. PROD_REV[23:0]: Product Revision. PROD_REV[23:0] is read from OTP address 0x0BDD ~ 0X0BDF or 0x17DD ~ 0x17DF. LUT Revision. LUT_REV[23:0] is read from OTP address 0x0BE0 ~ LUT_REV[23:0]: 0X0BE2 or 0x17E0.~ 0x17E2.
  • Page 30 EPD Module User Manual The BUSY_N flag would fall to 0 until the programming is completed. 28) READ OTP DATA (ROTP) (RA2 H ) 30／41...

  • Page 31: Block Diagram

    EPD Module User Manual 8. Block Diagram 31／41...

  • Page 32: Typical Application Circuit With Spi Interface

    EPD Module User Manual 9.Typical Application Circuit with SPI Interface Part Name Value Reference Part Requirements for spare part C4 C6 Voltage Rating:10v C1 C2 C3 C5 4.7uF Voltage Rating:25v C7 C8 C9 0.47Ohm (VR>20V,IR>500mA,Ir>1mA@VR=15V, D1 D2D3 Diode MBR0530 TA=100℃） VDS>20V,ID>500mA,VGS(th)<1.5 NMOS Vishay Si1308EDL...

  • Page 33: Typical Operating Sequence

    EPD Module User Manual 10. Typical Operating Sequence 10.1 LUT from OTP Operation Flow System power Reset the EPD driver IC Power on Load image data Display refresh Turn off Enter into deep sleep mode 33／41...

  • Page 34: Otp Operation Reference Program Code

    EPD Module User Manual 10.2 OTP Operation Reference Program Code System power Reset the EPD driver IC Power on SPI ( 0x04) Check BUSY pin BUSY=Low BUSY=High Data start transmission SPI (0x10&0x13) Transport B/W /R data Display refresh SPI (0x12) Check BUSY pin BUSY=Low BUSY=High...

  • Page 35: Reliability Test

    EPD Module User Manual 11. Reliability Test Test items Test condition Low-Temperature T = -25°C, 240 h Storage Test in white pattern High-Temperature T=60ºC，RH=40%，240h Storage Test in white pattern High-Temperature Operation T=40ºC，RH=35%，240h Low-Temperature Operation 0ºC，240h High-Temperature, T=40ºC，RH=80%，240h High-Humidity Operation High Temperature, High T=50ºC，RH=80%, 240h Humidity Storage Test in white pattern...

  • Page 36: Inspection Condition

    12.4 Display area 12.5 Ghosting test method Three-color ghosting is measured with following transition from horizontal 3 scale pattern to vertical 3 scale pattern. The listed optical characteristics are only guaranteed under the controller & waveform provided by OKRA. 20min 20min 30min 1）Measurement Instruments：X-rite i1Pro...

  • Page 37: Inspection Standard

    EPD Module User Manual 12.6 Inspection standard 12.6.1 Electric inspection standard Defect Item Standard Method Scope level Clear display Display complete Display Display uniform Black/White D≤0.3mm，negligible spots 0.3mm ＜ D≤0.5mm, N ≤ 5 ， Visual Allowed inspection 0.5mm＜D Not Allow Visual/ Inspection card Zone A...

  • Page 38: Appearance Inspection Standard

    EPD Module User Manual 12.6.2 Appearance inspection standard Defect Item Standard Method Scope level B/W spots /Bubble/ Visual Zone A Foreign bodies/ inspection Dents D≤0.3mm，Allowed 0.3mm＜D≤0.5mm，N≤5 D＞0.5mm，Not Allow Zone A Glass crack Not Allow Visual Zone B / Microscope Zone A \Dirty Allowed if can be removed Zone B...
  • Page 39 EPD Module User Manual L≤1.0mm,W≤0.15mm negligible Visual 1.0mm＜L≤4.0mm Zone B B/W Line / Ruler 0.15mm＜W≤0.5mm N≤4 allowable L＞4.0mm ,W＞0.5mm is not allowed TFT edge bulge： TFT edge bulge Visual Zone A /TFT chromatic X≤3mm，Y≤0.3mm Allowed / Microscope Zone B aberration TFT chromatic aberration :Allowed D≤0.25mm, allow 0.25mm＜D≤0.4mm ,n≤4 allow...

  • Page 40: Packaging

    EPD Module User Manual 13.Packaging DATE EPD PACKING INSTRUCTION DESIGN CHECKED OKRA-QS.D-010 APPROVED Customer Code Ref.P/N Type Marking PKG Method Pull Tape Surface Marks BACK None Blister OKRA0750 GLASS Packing Materials List 4PCS/LAYER,20LAYER/CTN,TOTAL 80PCS/CTN. Model Q'ty List Materials Unit Pull tape：...

  • Page 41: Handling, Safety, And Environment Requirements

    EPD Module User Manual 14. Handling, Safety, and Environment Requirements Warning The display glass may break when it is dropped or bumped on a hard surface. Handle with care. Should the display break, do not touch the electrophoretic material. In case of contact with electrophoretic material, wash with water and soap.

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