Organic electroluminescence display device
View Patent ↗Provided is an organic EL display device in which a large amount of a moisture absorbent is formed in a limited narrow region. An organic electroluminescence display device includes a rectangle element substrate having a display region; and a sealing substrate firmly adhered to the element substrate at a protrusion formed on the periphery thereof, in which a moisture absorbent is formed in a region of a concave surface surrounded by the protrusion so as not to overlap the display region, and the moisture absorbent includes moisture absorbents which are formed of a plurality of linear pattern set each joined to adjacent another moisture absorbents so as to be disposed in parallel with each other, and the crosssections of the moisture absorbents intersecting the longitudinal direction of the moisture absorbents are formed in the shape of a plurality of mounds joined to each other.
1. An organic electroluminescence display device comprising:
a rectangle element substrate having a display region with a plurality of light-emitting elements being arranged therein; and
a sealing substrate firmly adhered to the element substrate with a sealing material at a protrusion formed on the periphery thereof and opposed to the element substrate, wherein
a moisture absorbent is formed in a region of a concave surface surrounded by the protrusion of the sealing substrate so as not to overlap the display region, and
the moisture absorbent includes moisture absorbents which are formed of a plurality of linear pattern set each joined to adjacent moisture absorbents so as to be disposed in parallel with each other, and the cross sections of the moisture absorbents intersecting the longitudinal direction of the moisture absorbents are formed in a shape of continuous convexes joined to each other.
2. An organic electroluminescence display device according to claim 1 , wherein the moisture absorbents which are formed of the plurality of linear pattern set each joined to adjacent moisture absorbents so as to be disposed in parallel with each other are formed by changing a direction of an extended portion of a moisture absorbent extending in one direction and then extending another moisture absorbent in a direction opposite to the one direction so that the moisture absorbent in the linear pattern in the approach route and the moisture absorbent in the linear pattern in the return route are formed so as to be in contact with each other at their sides opposed to each other.
3. An organic electroluminescence display device according to claim 1 , wherein
a driver circuit for driving the light-emitting elements is formed on the element substrate adjacent to the display region, and
the moisture absorbents which are formed of the plurality of linear pattern set each joined to adjacent another moisture absorbents so as to be disposed in parallel with each other are formed so as to overlap at least a part of the driver circuit.
4. An organic electroluminescence display device according to claim 3 , wherein the moisture absorbent is formed so as to surround the display region and the driver circuit.
5. An organic electroluminescence display device according to claim 1 , wherein the moisture absorbents which are formed of the plurality of linear pattern set each joined to adjacent another moisture absorbents so as to be disposed in parallel with each other comprise a ring-like moisture absorbent formed so as to surround the display region.
6. An organic electroluminescence display device according to claim 5 , wherein the ring-like moisture absorbent located innermost surrounds the display region seamlessly, the other moisture absorbents located on the outside of said ring-like moisture absorbent located innermost are disposed except corner portions of the ring-like moisture absorbent located innermost.