Chunghwa Picture Tubes, LTD.
988Patents
757Active
988Granted
58Portfolio score
Filing activity: Oct 28, 1991 → Mar 23, 2018 · 442 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5592193A | Backlighting arrangement for LCD display panel | Physics | 101 | Expired |
| US8405675B2 | Device and method for converting three color values to four color values | Physics | 79 | Active |
| US7538827B2 | Pixel structure | Physics | 63 | Active |
| US8487900B2 | Touch display panel and liquid crystal display | Physics | 56 | Active |
| US6881980B1 | Package structure of light emitting diode | Electricity | 45 | Expired |
| US7123811B1 | Circular display device with a projective light source | Emerging Cross-Sectional Technologies | 44 | Expired |
| US8605121B2 | Dynamic Gamma correction circuit and panel display device | Physics | 43 | Active |
| US5399933A | Magnetic beam adjusting rings with different thickness | Electricity | 34 | Expired |
| US8896200B2 | Pixel structure of organic light emitting display device | Electricity | 33 | Active |
| US6838810B1 | Flat-panel display mounting system for portable computer | Emerging Cross-Sectional Technologies | 32 | Expired |
| US7173403B1 | Boost DC/DC converter | Electricity | 30 | Expired |
| US5488265A | Electron gun with chain-link main lens for static correction of electron beam astigmatism | Electricity | 28 | Expired |
| US7375374B2 | Method for repairing thin film transistor array substrate | Physics | 25 | Active |
| US7447292B2 | Shift register and driving circuit and display device using the same | Physics | 25 | Active |
| US7014964B1 | Color filter substrate and fabricating method thereof | Physics | 24 | Expired |
| US6972963B1 | Electronic apparatus having structure for protecting flexible printed circuit and chip thereon | Electricity | 23 | Expired |
| US7560981B2 | Controlling apparatus for controlling a plurality of LED strings and related light modules | Electricity | 22 | Active |
| US7339202B2 | Backlight module and a light-emitting-diode package structure therefor | Physics | 22 | Expired |
| US5773150A | Polymeric antistatic coating for cathode ray tubes | Emerging Cross-Sectional Technologies | 21 | Expired |
| US9182849B2 | Capacitive touch system and method of operating a capacitive touch system | Physics | 21 | Active |
| US7590214B2 | Shift register and shift register apparatus thereof | Physics | 20 | Active |
| US5404073A | Antiglare/antistatic coating for CRT | Electricity | 19 | Expired |
| USD489341S1 | PDP styles | General | 18 | Expired |
| US5523649A | Multilayer antireflective coating for video display panel | Electricity | 18 | Expired |
| US5350967A | Inline electron gun with negative astigmatism beam forming and dynamic quadrupole main lens | Electricity | 18 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.