Method for fabricating a liquid crystal display device including irradiating first and second ion beams onto inclined and flat surfaces of the TFT substrate
AssigneeLG Display Co., Ltd.
InventorYong Sung Ham
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Abstract
Provided are an LCD capable of improving an image quality and an aperture ratio by uniform alignment of liquid crystal, and a method for fabricating the LCD. A first ion beam is irradiated onto an alignment layer formed on a substrate in a first direction, and a second ion beam is irradiated onto the alignment layer in a second direction that is symmetrical or asymmetrical to the first direction with respect to a line perpendicular to the substrate. Accordingly, the entire surface of the alignment layer can be uniformly aligned. Consequently, light leakage can be prevented and thus an image quality can be enhanced. Also, a black matrix margin can be reduced and an aperture ratio can be enhanced.
Claims40
A method for fabricating an LCD including first and second substrates and a liquid crystal layer between the first and second substrates, comprising:
- forming a data line, a first electrode and a second electrode on the first substrate and arranged in parallel;
- forming a gate line to cross the data line;
- forming an alignment layer on an entire surface of the first substrate, the alignment layer including first and second portions having first and second inclined surfaces respectively produced by step differences of the data line, the first electrode, second electrode and the gate line and third portions having flat surfaces;
- performing a first alignment process on the alignment layer by irradiating a first ion beam through a bar-type ion gun onto the first portions and the third portions of the alignment layer in a first direction inclined at a first predetermined angle to the first substrate;
- and
- performing a second alignment process on the alignment layer by irradiating a second ion beam through the bar-type ion gun onto the second portions and the third portions of the alignment layer in a second direction inclined at a second predetermined angle to the first substrate, wherein the first and second directions are opposite to each other.
A method for fabricating an LCD including first and second substrates and a liquid crystal layer interposed between the first and second substrates, comprising:
- forming a data line, a first electrode and a second electrode on the first substrate and arranged in parallel;
- forming a gate line to cross the data line;
- forming an alignment layer on the first substrate, the alignment layer including first and second portions having first and second inclined surfaces respectively produced by step differences of the first electrode, the second electrode and the data line and third portions having flat surfaces;
- performing a first alignment process on the alignment layer by irradiating a first ion beam onto the first portions and the third portions of the alignment layer in a first direction inclined at a first predetermined angle to the first substrate, wherein the first ion beam is irradiated in the first direction through a bar-type ion gun to perform the first alignment process with respect to the first substrate;
- disposing a mask including a blocking portion and a transmitting portion which is arranged to correspond to the second portions of the alignment layer over the first substrate;
- and
- performing a second alignment process on the alignment layer by irradiating a second ion beam onto the second portions of the alignment layer through the transmitting portion of the mask in a second direction inclined at a second predetermined angle to the first substrate, wherein the second ion beam is irradiated in the second direction opposite to the first direction through the bar-type ion gun to perform the second alignment process with respect to the first substrate.
A method for fabricating an LCD including first and second substrates and a liquid crystal layer interposed between the first and second substrates, comprising:
- forming a data line, a first electrode and a second electrode on the first substrate and arranged in parallel;
- forming a gate line to cross the data line;
- forming an alignment layer on the first substrate, the alignment layer including first and second portions having first and second inclined surfaces respectively produced by step differences of the first electrode, the second electrode and the data line and third portions having flat surfaces;
- disposing a mask including a blocking portion and a transmitting portion which is arranged to correspond to the first portions of the alignment layer over the first substrate;
- performing a first alignment process on the alignment layer by irradiating a first ion beam onto the first portions of the alignment layer through the transmitting portion of the mask in a first direction inclined at a first predetermined angle to the first substrate, wherein the first ion beam is irradiated in the first direction through a bar-type ion gun to perform the first alignment process with respect to the first substrate;
- removing the mask;
- and
- performing a second alignment process on the alignment layer by irradiating a second ion beam onto the second portions and the third portions of the alignment layer in a second direction inclined at a second predetermined angle to the first substrate, wherein the second ion beam is irradiated in the second direction opposite to the first direction through the bar-type ion gun to perform the second alignment process with respect to the first substrate.
Dependencies are inferred from the claim text.