US5686977A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid crystal display and a manufacturing method thereof
Assignee: Samsung Display Co Ltd
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Filing: 1996-02-23
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Granted: 1997-11-11
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Expires: 2016-02-23
Abstract
Abstract An active matrix-type liquid crystal display is described having, for each pixel, a first electrode for a storage capacitor that is connected to a scanning signal line. The liquid crystal display can be repaired for disconnections and short inferiorities occurring in a crossing portion of the scanning signal line. A redundancy correcting line connects the capacitor electrodes of adjacent pixels. Also described is a double scanning signal line. The embodiments using the redundant connecting line and double scanning signal line are both repairable using a laser if imperfections exist. Thus, while maintaining high aperture and contrast ratios, the disconnections and shorts in the crossing portion of wirings can be minimized.
Inventors
- 👤 Sang-soo Kim
- 👤 In-sik Jang
- 👤 Dong-Gyu Kim
- 👤 Jun-ho Song
- 👤 Woon-Yong Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:37
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/136286; G02F1/1306; G02F1/1309; G02F1/136213; H; H10; H10D; H10D86/00; H10D86/40; H10D86/481; H10D86/60; G02F1/1333; G02F1/1335; G02F1/133509; G02F1/133512; G02F1/136259; G02F1/136263
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
166 words
A portion of a liquid crystal display device, comprising: a transparent substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals on the surface of said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines above said transparent substrate to thereby define a plurality of pixel regions on said transparent substrate; a pixel electrode disposed in each of said pixel regions; a thin film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; and a first electrode disposed so that at least a portion of said first electrode overlaps said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines.
Claim 2
Dependent Claim
166 words
A portion of a liquid crystal display device, comprising: a transparent substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals on the surface of said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines above said transparent substrate to thereby define a plurality of pixel regions on said transparent substrate; a pixel electrode disposed in each of said pixel regions; a thin film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; and a first electrode disposed so that at least a portion of said first electrode overlaps said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines.
Claim 3
Dependent Claim
27 words
A portion of a liquid crystal display according to claim 1, wherein said first electrodes and said scanning signal lines are made of a same type material.
Claim 4
Dependent Claim
26 words
A portion of a liquid crystal display according to claim 2, wherein said same type material includes at least one of aluminum, chromium, molybdenum and tantalum.
Claim 5
Dependent Claim
41 words
A portion of a liquid crystal display according to claim 1, wherein said thin film transistor is an inversely staggered type transistor formed substantially at a crossing point of said first and second scanning signal lines with said display signal lines.
Claim 6
Dependent Claim
35 words
A portion of a liquid crystal display according to claim 1, wherein each of said pairs of first and second scanning signal lines are connected to an external driving circuit by a single electrical conductor.
Claim 7
Dependent Claim
30 words
A portion of a liquid crystal display according to claim 5, wherein said single electrical conductor is electrically connected to a bonding pad for connection to an external driving circuit.
Claim 8
Dependent Claim
28 words
A portion of a liquid crystal display according to claim 1, wherein said first electrode connects said paired first and second scanning signal lines in a ladder pattern.
Claim 9
Dependent Claim
277 words
A liquid crystal display device, comprising: a front glass substrate having inner and outer surfaces: a rear glass substrate having inner and outer surfaces, disposed parallel to said front glass substrate and separated therefrom by a predetermined distance, said inner surface of said rear glass substrate facing said inner surface of said front glass substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals on said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines above the surface of said rear glass substrate to thereby define a plurality of pixel regions on said rear glass substrate; a pixel electrode disposed in each of said pixel regions; a thin film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; and a first electrode disposed so that at least a portion of said first electrode overlaps said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines; a light-shielding layer matrix disposed on said inner surface of said front glass substrate for defining a light transmitting aperture area; a color filter layer disposed on said inner surface of said front glass substrate, including said light transmitting area; a transparent crystal electrode formed on said color filter layer; and a liquid crystal layer injected between said front glass substrate and said rear glass substrate.
Claim 10
Dependent Claim
277 words
A liquid crystal display device, comprising: a front glass substrate having inner and outer surfaces: a rear glass substrate having inner and outer surfaces, disposed parallel to said front glass substrate and separated therefrom by a predetermined distance, said inner surface of said rear glass substrate facing said inner surface of said front glass substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals on said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines above the surface of said rear glass substrate to thereby define a plurality of pixel regions on said rear glass substrate; a pixel electrode disposed in each of said pixel regions; a thin film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; and a first electrode disposed so that at least a portion of said first electrode overlaps said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines; a light-shielding layer matrix disposed on said inner surface of said front glass substrate for defining a light transmitting aperture area; a color filter layer disposed on said inner surface of said front glass substrate, including said light transmitting area; a transparent crystal electrode formed on said color filter layer; and a liquid crystal layer injected between said front glass substrate and said rear glass substrate.
Claim 11
Dependent Claim
41 words
A liquid crystal display according to claim 8, wherein a border of said light transmitting aperture is substantially in vertical alignment with an inner periphery of said first electrode so that said first electrode functions as a secondary light shielding layer.
Claim 12
Dependent Claim
163 words
A portion of a liquid crystal display device, comprising: a transparent substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals on the surface of said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines above said transparent substrate to thereby define a plurality of pixel regions on said transparent substrate; a pixel electrode disposed in each of said pixel regions; a thin-film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; and a first electrode disposed in each of said pixel regions to substantially surround said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines.
Claim 13
Dependent Claim
163 words
A portion of a liquid crystal display device, comprising: a transparent substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals on the surface of said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines above said transparent substrate to thereby define a plurality of pixel regions on said transparent substrate; a pixel electrode disposed in each of said pixel regions; a thin-film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; and a first electrode disposed in each of said pixel regions to substantially surround said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines.
Claim 14
Dependent Claim
273 words
A liquid crystal display device, comprising: a front glass substrate having inner and outer surfaces; a rear glass substrate having inner and outer surfaces, disposed parallel to said front glass substrate and separated therefrom by a predetermined distance, said inner surface of said rear glass substrate facing said inner surface of said front glass substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals above said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines on the surface of said rear glass substrate to thereby define a plurality of pixel regions on said rear glass substrate; a pixel electrode disposed in each of said pixel regions; a thin-film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; a first electrode disposed in each of said pixel regions to substantially surround said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines; a light-shielding layer matrix disposed on said inner surface of said front glass substrate for defining a light transmitting aperture area; a color filter layer disposed on said inner surface of said front glass substrate, including said light transmitting area; a transparent crystal electrode formed on said color filter layer; and a liquid crystal layer injected between said front glass substrate and said rear glass substrate.
Claim 15
Dependent Claim
273 words
A liquid crystal display device, comprising: a front glass substrate having inner and outer surfaces; a rear glass substrate having inner and outer surfaces, disposed parallel to said front glass substrate and separated therefrom by a predetermined distance, said inner surface of said rear glass substrate facing said inner surface of said front glass substrate; a plurality of scanning signal lines comprising pairs of first and second scanning signal lines alternately arranged at predetermined intervals above said transparent substrate; a plurality of display signal lines, each insulated from and crossing said scanning signal lines on the surface of said rear glass substrate to thereby define a plurality of pixel regions on said rear glass substrate; a pixel electrode disposed in each of said pixel regions; a thin-film transistor disposed in each of said pixel regions and having a gate electrode connected to one of said scanning signal lines, a drain electrode connected to one of said display signal lines and a source electrode connected to said pixel electrode; a first electrode disposed in each of said pixel regions to substantially surround said pixel electrode, said first electrode being connected to both of said first and second scanning signal lines of said one of said scanning signal lines; a light-shielding layer matrix disposed on said inner surface of said front glass substrate for defining a light transmitting aperture area; a color filter layer disposed on said inner surface of said front glass substrate, including said light transmitting area; a transparent crystal electrode formed on said color filter layer; and a liquid crystal layer injected between said front glass substrate and said rear glass substrate.
References Cited (Backward Citations)
JPH01109327A
Cited
JPH01216321A
Cited
JPH0263020A
Cited
US5132677A
Cited
JPH02223929A
Cited
JPH02277027A
Cited
JPH02278231A
Cited
JPH0359543A
Cited
JPH03114028A
Cited
JPH03239229A
Cited
JPH0467020A
Cited
US5285301A
Cited
US5339181A
Cited
JPH05257165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-11-10 | 2001-05-12 | 2001-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-11-10 | 2005-05-12 | 2005-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-11-10 | 2009-05-12 | 2009-11-11 | $7700.00 | Window Closed / Lapsed |