• Study to ensure of LTPO Display performance
: Flicker, Mura, Color Shift (by temperature)
• Study of new technologies

1st LTPO MP in Tianma (Honor Magic 6)
• Development of FIAA (Fan-out in AA for narrow border)
: Improvement of 3-division screen issue caused by Reset 360Hz
: Improvement of AA hole mura
: Improvement of FIAA crosstalk issue
• Improvement of LTPO Panel performances
: Improvement of Flicker and VRR by adjusting the driving timing and voltage
: Improvement of bright-dots by adjusting TFT off-aging
: Improvement of Horizontal line crosstalk issue
• Establishment Design Guide for LTPO and FIAA
• Establishment SPICE Simulation environment

DOE Mask design (2022) for validation of LTPO+FIAA
DOE Mask design (2021) for validation of LTPO+WQ
• Development of LTPO Panel for 1~120Hz driving without flicker
• Improvement panel performance
(1) Panel Design
: Optimization of Panel loading and GIP design to minimize Power consumption
: ESD shock-robust design
: AA Hole mura reducing design
: Horizontal mura after RA reducing design
: Crosstalk reducing design
: LU/CU improving design under 2nit L32
: VDD/VSS IR-drop improving design
: Yield securing design
(2) Fabrication
: Process management and CTQ check for each process
: Optimization of Cell Aging to reduce of bright spot and to protect of PG.
(3) DDIC tuning
: Proposal of new demand to improve image quality to DDIC
: Optimization of Panel driving voltage level to minimize Power consumption
: Optimization of Power On/Off sequence
: Optimization of Driving Timing to reduce flickering

IGZO as Driving TFT for iWatch
• Research of LTPO PXL circuits for mobile
• Research of GIP circuits for LTPO PXL driving
• Research of driving method for LTPO display
• Research of Encap. design for Narrow Bezel
• Improvement of Horizontal (line and face) Crosstalk for LTPO
• Research of novel PXL circuits for Oxide Driving TFT
: Current stress, Temperature-Luminance relation
• Research of novel GIP circuits for Oxide Driving TFT
: N-type output GIP based on PMOS LTPS
13inch LTPO + tandem OLED
• Research of tandem OLED structure
• PXL Layout design support for 13inch AMOLED tablet PC
• Standardization of OLED Panel Design
• Less-mask process structure development
• Research of reduction 1Hz Flicker

Development ToE with Apple
• Establishment a Touch design guide
: Mutual Cap. Touch for iPhone
: Self Cap. Touch for iWatch
: Unit Touch Block, Full arrangement, and Touch Routing Design support
: Research of viewing angle color shift due to touch electrode
• Simulation Setup for TDN/DTN (Touch↔Display Noise)
• Touch Tester Setup (Mutual capacitance measure type)
Development LTPO (LTPS + IGZO)
• Variable frequency driving display based on LTPS + IGZO TFTs
• Research of reduction 1Hz Flicker
• Research of changing frequency without being perceived by naked eyes
• Less-mask process structure development
• Improvement of Horizontal (line and face) crosstalk for LTPO panel
• Failure Analysis
: IGZO TFT Reliability FA, Horizontal line Cross-talk

Technical Support of iPhone XS Max
LTPO OLED Mobile Panel Design Standardization
• Establishment the design rules for mobile display panel
• The bright-dot reduction by adjusting TFT Off-stress aging
• Improvement of PXL layout design for high yield
• Research of image sticking because of mobile charge in PI
• Establishment of bezel design rule and radial GIP design guide
• Development of a novel Pixel circuit (available compensation for VDD IR Drop)
• Development of advanced display for next generation
: Hole in Active Area, Foldable, UDIR, and UDC

Technical Support of MacBook Pro (LCD, all-IGZO, 13.3inch, 15.4inch, WQXGA)
• Proposal of GIP circuit based on IGZO
• Circuit Simulation, Lifetime modeling and peripheral panel design
• Design of ESD protect circuits
• Research of power on/off sequence
• Estimation of power consumption of whole display panel
• Failure Analysis
: Reliability FA, GIP circuits FA, Flicker and Vertical Cross-talk

Technical Support of iPAD (LCD, all-IGZO, 9.7inch, 7.9inch, QXGA)
• All IGZO GIP Circuit design
• Research of bias stress reliability for IGZO TFTs (PBTS, NBTIS)
• Device modeling of IGZO TFTs bias stress variation
• Estimation of life-time for IGZO based GIP circuit
• Simulation of GIP circuits (VTH margin, FA mode, Power consumption)
• Extraction parasitic capacitance of GIP circuits
• Layout design of GIP circuits
• Proposal and verification of novel all IGZO GIP circuit