Liquid crystal display having pad parts and method for manufacturing the same
AssigneeLG Electronics Inc.
InventorJong-Woo Kim
Life of this patent
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Abstract
A flat panel display, such as an LCD, has a substrate for fabricating thereon pixel electrodes and data and gate lines which are connected to pad terminals to communicate electronic signals to and from the display panel. To enhance the contact between the pad terminals to outer devices, such as display drivers, a plurality of holes are created near the pad terminals of the display panel to adhere the tape carrier package (TCP) to the substrate of the display panel. The TCP securely attached to the substrate prevents the passivation layer of the pixel electrodes from being disturbed from its original configuration or peeled off from the substrate.
Claims20
A flat panel display device comprising:
- a substrate;
- a plurality of lines formed above the substrate, each line having a pad;
- a first layer positioned above the substrate to cover at least a portion of the substrate, wherein the first layer exposes the pad of the each line and defines at least one opening near the pad, the opening having a depth lower than the surface of the first layer;
- and
- a second layer having a first part and a second part, wherein the first part is affixed to the pad to provide an electrical signal to the line and the second part is affixed to the opening defined in the first layer to enhance adhesion between the first and second layers.
An active panel of a liquid crystal display device comprising:
- a substrate;
- a gate line formed on the substrate;
- a gate pad formed at the end of the gate line;
- a gate insulating layer covering the gate line and the gate pad;
- a source line crossing the gate line on the gate insulating layer;
- a source pad formed at the end of the source line;
- a passivation layer covering the source line and the source pad;
- a gate contact hole exposing the gate pad;
- a source contact hole exposing the source pad, wherein the passivation layer defines at least one hole exposing at least a portion of the substrate between the gate pad and the source pad.
A method for manufacturing an active panel of a liquid crystal display device, comprising steps of:
- providing a substrate;
- fabricating a plurality of lines above the substrate, each line having a pad;
- forming a first layer above the substrate to cover at least a portion of the substrate, wherein the first layer exposes the pad of the each line and defines at least one opening near the pad, the opening having a depth lower than the surface of the first layer;
- and
- forming a second layer having a first part and a second part, wherein the first part is affixed to the pad to provide an electrical signal to the line and the second part is affixed to a bottom surface of the opening defined in the first layer to enhance adhesion between the first and second layers.
Dependencies are inferred from the claim text.