Dan CAO

Person

Shenzhen, Guangdong, CN

People

Patents Grantslast 30 patents

Information Patent Grant
Display panel and controlling method thereof
- Patent number 12,067,924
- Issue date Aug 20, 2024
- TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Zhisheng Li
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Display device driving method and display device
- Patent number 11,699,407
- Issue date Jul 11, 2023
- TCL China Star Optoelectronics Technology Co., Ltd.
- Xin Zhang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Power management chip and related driving method and driving system
- Patent number 11,315,476
- Issue date Apr 26, 2022
- Wenfang Li
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Electrical level shifting chip and display device
- Patent number 11,205,359
- Issue date Dec 21, 2021
- Wenfang Li
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Signal processing method for display panel and device using same
- Patent number 11,043,154
- Issue date Jun 22, 2021
- Fengcheng Xu
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Circuit and method for detecting short circuit of common electrode...
- Patent number 10,839,728
- Issue date Nov 17, 2020
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Xianming Zhang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
DC voltage conversion circuit, DC voltage conversion method and liq...
- Patent number 10,819,230
- Issue date Oct 27, 2020
- SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
- Wenfang Li
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Overcurrent protection circuit and liquid crystal display
- Patent number 10,581,314
- Issue date Mar 3, 2020
- SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
- Xianming Zhang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Driving method of liquid crystal display panel and voltage adjustme...
- Patent number 10,565,948
- Issue date Feb 18, 2020
- Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Xianming Zhang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Common voltage generating circuit and LCD
- Patent number 10,395,614
- Issue date Aug 27, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Shutter glasses, display system and shutter display method
- Patent number 10,362,298
- Issue date Jul 23, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
PMIC boot timing circuit and PMIC boot timing determination method
- Patent number 10,340,792
- Issue date Jul 2, 2019
- Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Xianming Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Absorption circuit, feed circuit and liquid crystal display
- Patent number 10,320,286
- Issue date Jun 11, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Converter circuit for converting direct current to direct current a...
- Patent number 10,312,809
- Issue date Jun 4, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Li Zhou
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Appointment-making server and appointment-making method
- Patent number 10,297,346
- Issue date May 21, 2019
- Fu Tai Hua Industry (Shenzhen) Co., Ltd.
- Dan Cao
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Display panel and overcurrent protection circuit of gate driver on...
- Patent number 10,290,244
- Issue date May 14, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Driver signal control circuit for display panel and display panel
- Patent number 10,262,574
- Issue date Apr 16, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Wenfang Li
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Snubber circuit
- Patent number 10,256,714
- Issue date Apr 9, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Digital power supply circuit and liquid crystal driving device
- Patent number 10,210,824
- Issue date Feb 19, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
DC topology circuit workable with various loads through inclusion o...
- Patent number 10,193,447
- Issue date Jan 29, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Corner cut circuit in liquid crystal panel driving system
- Patent number 10,186,227
- Issue date Jan 22, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Direct current voltage conversion circuit and liquid crystal displa...
- Patent number 10,181,790
- Issue date Jan 15, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Control circuit for DC-DC converter that includes differential ampl...
- Patent number 10,177,656
- Issue date Jan 8, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Supplemental circuit for power supply with power management IC
- Patent number 10,170,977
- Issue date Jan 1, 2019
- Shenzhen China Star Optoelectronics Technology Co. Ltd
- Dan Cao
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Feedback control circuit and power management module shortening fee...
- Patent number 10,141,840
- Issue date Nov 27, 2018
- Shenzhen China Star Optoelectronics Co., Ltd
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Voltage controlling circuit of T-CON load variation, display panel...
- Patent number 10,141,839
- Issue date Nov 27, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Driving circuit and liquid crystal display device
- Patent number 10,115,367
- Issue date Oct 30, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Xianming Zhang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Loop compensation circuit and switching power supply circuit
- Patent number 10,116,206
- Issue date Oct 30, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Xianming Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
DC voltage conversion circuit and liquid crystal display device inc...
- Patent number 10,115,359
- Issue date Oct 30, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Liquid crystal display panel common voltage adjustment circuit and...
- Patent number 10,083,669
- Issue date Sep 25, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan Cao
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS

Patents Applicationslast 30 patents

Information Patent Application
DISPLAY PANEL AND CONTROLLING METHOD THEREOF
- Publication number 20240029618
- Publication date Jan 25, 2024
- TCL China Star Optoelectronics Technology Co., Ltd.
- Zhisheng Li
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
ARRAY SUBSTRATE AND FABRICATION METHOD THEREOF, AND DISPLAY DEVICE
- Publication number 20230154932
- Publication date May 18, 2023
- Shenzhen china Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Bin ZHAO
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
DISPLAY DEVICE DRIVING METHOD AND DISPLAY DEVICE
- Publication number 20230090936
- Publication date Mar 23, 2023
- TCL China Star Optoelectronics Technology Co., Ltd.
- Xin Zhang
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
GAMMA VOLTAGE CORRECTION METHOD, GAMMA VOLTAGE CORRECTION DEVICE, A...
- Publication number 20220406239
- Publication date Dec 22, 2022
- Shenzhen china Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Wenwu LIAO
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
POWER MANAGEMNET CHIP AND RELATED DRIVING METHOD AND DRIVING SYSTEM
- Publication number 20210366337
- Publication date Nov 25, 2021
- TCL China Star Optoelectronics Technology Co., Ltd.
- Wenfang LI
- G11 - INFORMATION STORAGE
Information Patent Application
ELECTRICAL LEVEL SHIFTING CHIP AND DISPLAY DEVICE
- Publication number 20210358353
- Publication date Nov 18, 2021
- TCL China Star Optoelectronics Technology Co., Ltd.
- Wenfang LI
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
DISPLAY PANEL DRIVING SYSTEM AND DISPLAY DEVICE
- Publication number 20210335205
- Publication date Oct 28, 2021
- TCL China Star Optoelectronics Technology Co., Ltd.
- Wenfang LI
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
DRIVING CIRCUIT, DRIVING METHOD, AND DISPLAY DEVICE
- Publication number 20210256890
- Publication date Aug 19, 2021
- TCL China Star Optoelectronics Technology Co., Ltd.
- Wenfang LI
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
SIGNAL PROCESSING METHOD FOR DISPLAY PANEL AND DEVICE USING SAME
- Publication number 20210166596
- Publication date Jun 3, 2021
- TCL China Star Optoelectronics Technology Co., Ltd.
- Fengcheng XU
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
CHIP TEMPERATURE CONTROL CIRCUIT OF LIQUID CRYSTAL DISPLAY PANEL AN...
- Publication number 20210080775
- Publication date Mar 18, 2021
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Wenfang LI
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
DC VOLTAGE CONVERSION CIRCUIT, DC VOLTAGE CONVERSION METHOD AND LIQ...
- Publication number 20200177077
- Publication date Jun 4, 2020
- Wenfang LI
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
CIRCUIT AND METHOD FOR DETECTING SHORT CIRCUIT OF COMMON ELECTRODE...
- Publication number 20200135071
- Publication date Apr 30, 2020
- Shenzhen China Star Optoelectronics Technology Co., LTD.
- Xianming ZHANG
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
PMIC BOOT TIMING CIRCUIT AND PMIC BOOT TIMING DETERMINATION METHOD
- Publication number 20190207512
- Publication date Jul 4, 2019
- Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Xianming ZHANG
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Overcurrent Protection Circuit and Liquid Crystal Display
- Publication number 20190115825
- Publication date Apr 18, 2019
- Shenzhen china Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Xianming Zhang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SHUTTER GLASSES, DISPLAY SYSTEM AND SHUTTER DISPLAY METHOD
- Publication number 20190068961
- Publication date Feb 28, 2019
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan CAO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
Driving Method of Liquid Crystal Display Panel and Voltage Adjustme...
- Publication number 20190043436
- Publication date Feb 7, 2019
- Xianming ZHANG
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
COMMON VOLTAGE GENERATING CIRCUIT AND LCD
- Publication number 20180374438
- Publication date Dec 27, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan CAO
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
DC TOPOLOGY CIRCUIT WORKABLE WITH VARIOUS LOADS THROUGH INCLUSION O...
- Publication number 20180316266
- Publication date Nov 1, 2018
- Shenzhen China Star Optelectronics Technology Co., Ltd.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ABSORPTION CIRCUIT, FEED CIRCUIT AND LIQUID CRYSTAL DISPLAY
- Publication number 20180219475
- Publication date Aug 2, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan CAO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
CONTROL CIRCUITS OF SWITCHING POWER SUPPLY
- Publication number 20180183324
- Publication date Jun 28, 2018
- SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO.,LTD.
- Dan CAO
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DRIVER SIGNAL CONTROL CIRCUIT FOR DISPLAY PANEL AND DISPLAY PANEL
- Publication number 20180182280
- Publication date Jun 28, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Wenfang LI
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
CONVERTER CIRCUIT FOR CONVERTING DIRECT CURRENT TO DIRECT CURRENT A...
- Publication number 20180183329
- Publication date Jun 28, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Li ZHOU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
VOLTAGE STABILIZING DEVICE
- Publication number 20180174536
- Publication date Jun 21, 2018
- Shenzhen China Star Optoelectronics Technology Co. Ltd.
- Xianming ZHANG
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
DIRECT CURRENT VOLTAGE CONVERSION CIRCUIT AND LIQUID CRYSTAL DISPLA...
- Publication number 20180175729
- Publication date Jun 21, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan CAO
- G02 - OPTICS
Information Patent Application
DISPLAY PANEL AND OVERCURRENT PROTECTION CIRCUIT OF GATE DRIVER ON...
- Publication number 20180174501
- Publication date Jun 21, 2018
- Shenzhen China Star Optoelectronics Technology Co. Ltd.
- Dan CAO
- G05 - CONTROLLING REGULATING
Information Patent Application
DIGITAL POWER SUPPLY CIRCUIT AND LIQUID CRYSTAL DRIVING DEVICE
- Publication number 20180166027
- Publication date Jun 14, 2018
- SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Dan Cao
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
DISPLAY PANEL AND ANGLE-CUTTING CIRCUIT
- Publication number 20180166038
- Publication date Jun 14, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan CAO
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
CORNOR CUT CIRCUIT IN LIQUID CRYSTAL PANEL DRIVING SYSTEM
- Publication number 20180144708
- Publication date May 24, 2018
- Dan CAO
- G02 - OPTICS
Information Patent Application
VOLTAGE COMPENSATION CIRCUITS AND VOLTAGE COMPENSATION METHODS THEREOF
- Publication number 20180122325
- Publication date May 3, 2018
- SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
- Xianming ZHANG
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Application
DC VOLTAGE CONVERSION CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE INC...
- Publication number 20180115151
- Publication date Apr 26, 2018
- Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dan CAO
- G02 - OPTICS

Person

Patents Grantslast 30 patents

Display panel and controlling method thereof

Display device driving method and display device

Power management chip and related driving method and driving system

Electrical level shifting chip and display device

Signal processing method for display panel and device using same

Circuit and method for detecting short circuit of common electrode...

DC voltage conversion circuit, DC voltage conversion method and liq...

Overcurrent protection circuit and liquid crystal display

Driving method of liquid crystal display panel and voltage adjustme...

Common voltage generating circuit and LCD

Shutter glasses, display system and shutter display method

PMIC boot timing circuit and PMIC boot timing determination method

Absorption circuit, feed circuit and liquid crystal display

Converter circuit for converting direct current to direct current a...

Appointment-making server and appointment-making method

Display panel and overcurrent protection circuit of gate driver on...

Driver signal control circuit for display panel and display panel

Snubber circuit

Digital power supply circuit and liquid crystal driving device

DC topology circuit workable with various loads through inclusion o...

Corner cut circuit in liquid crystal panel driving system

Direct current voltage conversion circuit and liquid crystal displa...

Control circuit for DC-DC converter that includes differential ampl...

Supplemental circuit for power supply with power management IC

Feedback control circuit and power management module shortening fee...

Voltage controlling circuit of T-CON load variation, display panel...

Driving circuit and liquid crystal display device

Loop compensation circuit and switching power supply circuit

DC voltage conversion circuit and liquid crystal display device inc...

Liquid crystal display panel common voltage adjustment circuit and...

Patents Applicationslast 30 patents

DISPLAY PANEL AND CONTROLLING METHOD THEREOF

ARRAY SUBSTRATE AND FABRICATION METHOD THEREOF, AND DISPLAY DEVICE

DISPLAY DEVICE DRIVING METHOD AND DISPLAY DEVICE

GAMMA VOLTAGE CORRECTION METHOD, GAMMA VOLTAGE CORRECTION DEVICE, A...

POWER MANAGEMNET CHIP AND RELATED DRIVING METHOD AND DRIVING SYSTEM

ELECTRICAL LEVEL SHIFTING CHIP AND DISPLAY DEVICE

DISPLAY PANEL DRIVING SYSTEM AND DISPLAY DEVICE

DRIVING CIRCUIT, DRIVING METHOD, AND DISPLAY DEVICE

SIGNAL PROCESSING METHOD FOR DISPLAY PANEL AND DEVICE USING SAME

CHIP TEMPERATURE CONTROL CIRCUIT OF LIQUID CRYSTAL DISPLAY PANEL AN...

DC VOLTAGE CONVERSION CIRCUIT, DC VOLTAGE CONVERSION METHOD AND LIQ...

CIRCUIT AND METHOD FOR DETECTING SHORT CIRCUIT OF COMMON ELECTRODE...

PMIC BOOT TIMING CIRCUIT AND PMIC BOOT TIMING DETERMINATION METHOD

Overcurrent Protection Circuit and Liquid Crystal Display

SHUTTER GLASSES, DISPLAY SYSTEM AND SHUTTER DISPLAY METHOD

Driving Method of Liquid Crystal Display Panel and Voltage Adjustme...

COMMON VOLTAGE GENERATING CIRCUIT AND LCD

DC TOPOLOGY CIRCUIT WORKABLE WITH VARIOUS LOADS THROUGH INCLUSION O...

ABSORPTION CIRCUIT, FEED CIRCUIT AND LIQUID CRYSTAL DISPLAY

CONTROL CIRCUITS OF SWITCHING POWER SUPPLY

DRIVER SIGNAL CONTROL CIRCUIT FOR DISPLAY PANEL AND DISPLAY PANEL

CONVERTER CIRCUIT FOR CONVERTING DIRECT CURRENT TO DIRECT CURRENT A...

VOLTAGE STABILIZING DEVICE

DIRECT CURRENT VOLTAGE CONVERSION CIRCUIT AND LIQUID CRYSTAL DISPLA...

DISPLAY PANEL AND OVERCURRENT PROTECTION CIRCUIT OF GATE DRIVER ON...

DIGITAL POWER SUPPLY CIRCUIT AND LIQUID CRYSTAL DRIVING DEVICE

DISPLAY PANEL AND ANGLE-CUTTING CIRCUIT

CORNOR CUT CIRCUIT IN LIQUID CRYSTAL PANEL DRIVING SYSTEM

VOLTAGE COMPENSATION CIRCUITS AND VOLTAGE COMPENSATION METHODS THEREOF

DC VOLTAGE CONVERSION CIRCUIT AND LIQUID CRYSTAL DISPLAY DEVICE INC...