Apparatus for manufacturing display device and method for manufacturing display device using the same
An apparatus for manufacturing a display device includes: a stage on which a substrate to be processed is supported, the substrate to be processed including a first alignment layer of the display device; an optical system facing the substrate to be processed which is supported on the stage, the optical system including a light source which irradiates ultraviolet rays to the substrate to be processed; and a mask which is interposed between the light source and the substrate to be processed which includes the first alignment layer of the display device. The mask defines: a transmitting portion thereof through which the ultraviolet rays irradiated from the light source are transmitted to the first alignment layer of the substrate to be processed, and a blocking portion thereof which blocks transmission of the ultraviolet rays irradiated from the light source to the substrate to be processed.
1. A method for manufacturing a display device, comprising:
preparing a substrate to be processed, the substrate to be processed including:
a display area of the display device at which an image is displayed defined therein,
a non-display area at which the image is not displayed defined therein,
a first substrate of the display device,
a first alignment layer of the display device which is on the first substrate, wherein the first alignment layer is disposed in the display area and the non-display area; and
an overcoat layer of the display device which is disposed between the first substrate and the first alignment layer, the overcoat layer disposed in the display area and the non-display area;
irradiating ultraviolet rays to the substrate to be processed including the first alignment layer and the overcoat layer which is exposed from the first alignment layer in the non-display area, by using a mask having a transmitting portion which transmits the ultraviolet rays to the first alignment layer of the substrate to be processed and a blocking portion which blocks transmission of the ultraviolet rays to the overcoat layer in the non-display area of the substrate to be processed; and
bonding an opposed substrate which faces the substrate to be processed to the substrate to be processed.
2. The method of claim 1 , wherein in irradiating ultraviolet rays to the substrate to be processed, the transmitting portion of the mask is disposed to face the display area of the substrate to be processed and the blocking portion of the mask is disposed to face the non-display area of the substrate to be processed.
3. The method of claim 1 , wherein irradiating ultraviolet rays to the substrate to be processed includes irradiating the ultraviolet rays to the display area of the substrate to be processed through the transmitting portion of the mask to align the first alignment layer.
4. The method of claim 1 , wherein the substrate to be processed further includes a color filter of the display device which is on the first substrate.
5. The method of claim 1 , wherein the opposed substrate which is bonded to the substrate to be processed includes a second substrate of the display device, a pixel electrode of the display device which is on the second substrate, and a common electrode of the display device which is on the pixel electrode.
6. The method of claim 5 , wherein the pixel electrode and the common electrode of the opposed substrate form a horizontal electric field therebetween.
7. The method of claim 1 , the substrate to be processed further includes a plurality of cells, and each of the cells includes the display area of the display device at which an image is displayed and the non-display area of the display device at which the image is not displayed, the non-display area disposed outside the display area, and
the first alignment layer is disposed in each of the display areas and extends therefrom to the non-display areas.
8. The method of claim 7 , wherein among the plurality of cells of the substrate to be processed, the transmitting portion of the mask corresponds to the display area of each cell and the blocking portion of the mask corresponds to the non-display area of each cell.
9. The method of claim 8 , wherein the mask defines the transmitting portion in plural arranged in a matrix having a plurality of rows and a plurality of columns.