Liquid crystal display and manufacturing process thereof
View Patent ↗The invention provides a small-sized liquid crystal display in which a frame region of an outer peripheral portion of a display region is made small without any light leak at peripheral portion of the display region of a liquid crystal display panel. The invention also provides a manufacturing process of such a liquid crystal display. Periphery shading films (shade films 3 a and 3 b ) of a display region of a liquid crystal display panel are alternately formed on a first substrate 1 (shade film 3 a ) and a second substrate 2 (shade film 3 b ) oppositely arranged, and a transparent portion (width Q) for irradiating a seal resin 4 used to adhere the two substrates forming the liquid crystal display panel with ultraviolet rays 7 is provided within a region (width P) where the periphery shading films are formed.
1. A manufacturing process of a liquid crystal display, comprising the steps of:
providing a first substrate having a display region, an outside edge portion positioned outside of the display region, and a first shade film formed on the outer edge portion;
providing a second substrate having a display region opposing to the display region of the first substrate, an outside edge portion opposing to the outside edge portion of the first substrate, electrodes for displaying on the display region, an electrode leading wires having shading characteristics and lead from the display electrodes to an outside of the display region, and a second shade film formed on the outside edge portion of the second substrate;
forming a combination of the first substrate and the second substrate oppositely to each other with a seal resin of an ultraviolet ray hardening type between the outside edge portions of the first and second substrates, wherein the first and second shade films are formed to give a peripheral shading width formed by putting together the width of the first shade film and the width of the second shade film, the seal resin is positioned only between the second shade film of the second substrate and a transparent portion of the first substrate corresponding to the second shade film, and ultraviolet ray can be transmitted through the transparent portion of the first substrate;
sealing a liquid crystal held between the first substrate and the second substrate with the seal resin; and
hardening the seal resin by irradiation to only one side of the first substrate of the combination with ultraviolet ray through the transparent portion of the first substrate.
2. The manufacturing process of the liquid crystal display according to claim 1 , wherein the irradiation for the one side for the combination is performed only on the seal resin applied portion.
3. The manufacturing process of the liquid crystal display according to claim 2 , wherein the irradiation is performed through a shade plate having an ultraviolet ray transmitting region at the seal resin applied portion.
4. The manufacturing process of the liquid crystal display according to claim 2 , wherein the irradiation is performed through a fiber at seal resin applied portion.