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US 2016/0103354 A1Published application
Display Device
AssigneeLG Display Co., Ltd.
InventorChunTak Lee
Life of this patent
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Abstract
Minimum distances between features in high resolution liquid crystal displays are described. Specifically, minimum distances between a column spacer and contact holes in adjacent pixels are described. Maintaining a minimum distance between a column spacer and a contact hole prevents the column spacer from being unintentionally placed in a nearby contact hole. This unintentional placement can be more likely in high resolution displays due to reduced pixel size.
Claims16
A liquid crystal display device comprising:
- an array of pixels, each pixel including a passivation layer defining a contact hole;
- and
- a plurality of column spacers including first column spacers and second column spacers shorter than the first column spacers,
- wherein the first column spacers are disposed only within a first group of pixels of the array of pixels of the array of pixels at a plurality of boundaries between adjacent pixels of the first group, and
- wherein a first distance between a contact hole of a first pixel of the first group and a contact hole of an adjacent second pixel of the first group is greater than a second distance between a contact hole of a first pixel of a second group of pixels and a contact hole of an adjacent second pixel of the second group of pixels.
2 more elements
A method of fabricating a liquid crystal display device, comprising:
- providing an array of pixels on a first substrate, each pixel including a corresponding contact hole in a passivation layer;
- forming a first alignment layer on the passivation layer;
- forming a second alignment layer on a second substrate;
- forming a plurality of first column spacers and a plurality of second column spacers shorter than the first column spacers on the second alignment layer;
- and
- disposing the second substrate, the second alignment layer, and the plurality of first and second column spacers over the first alignment layer, wherein the first column spacers are disposed only within a first group of pixels of the array of pixels of the array of pixels at a plurality of boundaries between adjacent pixels of the first group and wherein:
- a first distance between a contact hole of a first pixel of the first group and a contact hole of an adjacent second pixel of the first group is greater than a second distance between a contact hole of a first pixel of the second group of pixels and a contact hole of an adjacent second pixel of a second group of pixels.
4 more elements
Dependencies are inferred from the claim text.