Reflective and transflective liquid crystal display device and its manufacturing method
First Claim
Patent Images
1. A reflective liquid crystal display device comprising:
- a plurality of gate lines and data lines intersecting on a first substrate, the gate line and the data line defining pixel areas;
a thin film transistor formed at the intersection of the gate line and the data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode;
a capacitor lower electrode of a storage capacitor formed on the same plane as the gate line;
a capacitor upper electrode formed integrally with the drain electrode on the capacitor lower electrode;
a first insulation film inserted between the capacitor upper electrode and the capacitor lower electrode; and
a thin film transistor array substrate connected with the drain electrode and including the reflective electrode formed at the pixel area.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed are a reflective and transflective liquid crystal display device and its manufacturing method, which can raise light efficiency by removing a depressed part in a reflective device without forming a capacitor contact hole in a storage capacitor. The reflective liquid crystal display device includes: a plurality of gate lines and data lines intersecting on a first substrate, the gate line and the data line defining pixel areas; a thin film transistor formed at the intersection of the gate line and the data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode; a capacitor lower electrode of a storage capacitor formed on the same plane as the gate line; an capacitor upper electrode formed integrally with the drain electrode on the capacitor lower electrode; a first insulation film inserted between the capacitor upper electrode and the capacitor lower electrode; and a thin film transistor array substrate connected with the drain electrode and including the reflective electrode formed at the pixel area.
11 Citations
12 Claims
-
1. A reflective liquid crystal display device comprising:
-
a plurality of gate lines and data lines intersecting on a first substrate, the gate line and the data line defining pixel areas;
a thin film transistor formed at the intersection of the gate line and the data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode;
a capacitor lower electrode of a storage capacitor formed on the same plane as the gate line;
a capacitor upper electrode formed integrally with the drain electrode on the capacitor lower electrode;
a first insulation film inserted between the capacitor upper electrode and the capacitor lower electrode; and
a thin film transistor array substrate connected with the drain electrode and including the reflective electrode formed at the pixel area. - View Dependent Claims (2, 3, 4)
-
-
5. A transflective liquid crystal display device, which has pixel areas defined into a reflection part and a transmission part, the liquid crystal display device comprising:
-
a plurality of gate lines and data lines intersecting on a first substrate, the gate line and the data line defining pixel areas;
a thin film transistor formed at the intersection of the gate line and the data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode;
a capacitor lower electrode of a storage capacitor formed on the same plane as the gate line;
a capacitor upper electrode formed integrally with the drain electrode on the capacitor lower electrode;
a first insulation film inserted between the capacitor upper electrode and the capacitor lower electrode;
a reflective electrode connected with the drain electrode and formed on the reflection area; and
a thin film transistor array substrate connected with the reflective electrode and including the transmissive electrode formed at the transmission area. - View Dependent Claims (6, 7, 8, 9, 10)
-
-
11. A method for manufacturing a reflective liquid crystal display device, the method comprising:
-
intersecting a plurality of gate lines and data lines on a first substrate;
forming a thin film transistor on the intersection of the gate line and the data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode;
forming a capacitor lower electrode of a storage capacitor on the same plane as the gate line;
forming an insulation film on;
the capacitor lower electrode;
forming an capacitor upper electrode on an upper portion of the capacitor lower electrode, the capacitor upper electrode being formed integrally with the drain electrode; and
forming a reflective electrode connected with the drain electrode.
-
-
12. A method for manufacturing a transflective liquid crystal display device, which has pixel areas defined into a reflection part and a transmission part, the method comprising:
-
intersecting a plurality of gate lines and data lines on a first substrate;
forming a thin film transistor on the intersection of the gate line and the data line, the thin film transistor including a gate electrode, a semiconductor layer, a source electrode and a drain electrode;
forming a capacitor lower electrode of a storage capacitor on the same plane as the gate line;
forming an insulation film on the capacitor lower electrode;
forming a capacitor upper electrode on an upper portion of the capacitor lower electrode, the capacitor upper electrode being formed integrally with the drain electrode;
forming a reflective electrode connected with the drain electrode at the reflection area; and
forming a transflective electrode connected with the reflective electrode at the transmission area.
-
Specification
-
- Resources
Litigation Campaign Assessment
Thank you for your request. You will receive a custom alert email when the Litigation Campaign Assessment is available.
×
-
Current AssigneeLG Display Co., Ltd.
-
Original AssigneeDong Guk Kim, Heume I.L. Baek, Kyoung S.U. Ha, Woong Kwon Kim, Yong Beom Kim
-
InventorsBaek, Heume Il, Kim, Dong Guk, Kim, Yong Beom, Ha, Kyoung Su, Kim, Woong Kwon
-
Granted Patent
-
Time in Patent OfficeDays
-
Field of Search
-
US Class Current349/113
-
CPC Class CodesG02F 1/133555 TransflectorsG02F 1/136213 Storage capacitors associat...
