Foldable display device
A display device including a flexible display module and provides a display surface on which an image is displayed. The flexible display module includes a display panel including a light-emitting device and a sensor unit disposed on the display panel. The sensor unit senses pressure applied to the flexible display module in a folded-in mode in which the flexible display module is folded such that a portion of the display surface faces another portion of the display surface.
1. A display device comprising:
a display panel comprising a display area and a non-display area, the display area having a first area, a second area, and a third area disposed between the first area and the second area in an unfolded state, wherein the third area has a curvature in a folded state, with respect to a bending axis;
a sensing unit including touch signal lines and touch sensors disposed on the display panel; and
an anti-reflection layer including a color filter on the display panel,
wherein:
the display panel comprises:
a base layer overlapped with the display area and the non-display area;
a circuit layer including a first transistor and a second transistor disposed on the base layer;
light emitting elements disposed on the circuit layer, each of the light emitting elements comprising a first electrode, a second electrode disposed on the first electrode, and a light emitting layer disposed between the first electrode and the second electrode;
a pixel defining layer on the circuit layer, the pixel defining layer partially exposing the first electrode, wherein a light emitting area is defined in the display panel corresponding to a portion of the first electrode exposed from the pixel defining layer;
a thin film sealing layer disposed on the second electrode; and
a protective film under the base layer;
the sensing unit is disposed on the thin film sealing layer;
each of touch sensors has a substantially mesh shape and comprises titanium and aluminum;
each of touch signal lines comprises titanium and aluminum;
each of the touch sensors is not overlapped with the light emitting area in a plan view;
the thin film sealing layer comprises an organic layer and an inorganic layer;
the first transistor includes a metal oxide semiconductor;
the second transistor includes a poly-silicon semiconductor;
each of the plurality of touch sensors comprises a first sensor extended in a first direction crossing the bending axis to be formed from the first area through the third area to the second area and a second sensor extended in a second direction parallel to the bending axis; and
the first sensor and the second sensor face each other in the folded state.
2. The display device of claim 1 , further comprising:
a first adhesive member on the sensing unit; and
a window on the first adhesive member.
3. The display device of claim 1 , wherein the display panel comprises a capping layer disposed between the second electrode and the thin film sealing layer.
4. The display device of claim 1 , wherein;
the first sensor and the second sensor are disposed symmetrically with respect to the bending axis in the folded state.
5. The display device of claim 1 , wherein the second electrode is in common with the light emitting elements.
6. The display device of claim 1 , further comprising a frame structure disposed under the display panel,
wherein the frame structure includes a joint structure or hinge structure.
7. A display device comprising:
a display panel comprising a display area and a non-display area, the display area having a first area, a second area, and a third area disposed between the first area and the second area in an unfolded state, wherein the third area has a curvature in a folded state, with respect to a bending axis;
a sensing unit including touch signal lines and touch sensors disposed on the display panel;
an anti-reflection layer on the display panel;
a first adhesive member on the sensing unit; and
a window on the first adhesive member,
wherein:
the display panel comprises:
a base layer overlapped with the display area and the non-display area;
a circuit layer including a first transistor and a second transistor disposed on the base layer;
light emitting elements disposed on the circuit layer, each of the light emitting elements comprising a first electrode, a second electrode disposed on the first electrode, and a light emitting layer disposed between the first electrode and the second electrode;
a pixel defining layer on the circuit layer, the pixel defining layer partially exposing the first electrode, wherein a light emitting area is defined in the display panel corresponding to a portion of the first electrode exposed from the pixel defining layer;
a capping layer disposed on the second electrode,
a thin film sealing layer disposed on the capping layer; and
a protective film under the base layer;
the sensing unit is disposed on the thin film sealing layer;
each of touch sensors has a substantially mesh shape and comprises titanium and aluminum;
each of touch signal lines comprises titanium and aluminum;
each of the touch sensors is not overlapped with the light emitting area in a plan view;
the thin film sealing layer comprises an organic layer and an inorganic layer;
each of the plurality of touch sensors comprises a first sensor extended in a first direction crossing the bending axis to be formed from the first area through the third area to the second area and a second sensor extended in a second direction parallel to the bending axis; and
the first sensor and the second sensor face each other in the folded state.
8. The display device of claim 7 , wherein each of the plurality of touch sensors comprises a first sensor and a second sensor,
the first sensor and the second sensor are disposed symmetrically with respect to the bending axis in the folded state.
9. The display device of claim 7 , wherein the second electrode is in common with the light emitting elements.
10. The display device of claim 7 , further comprising a frame structure disposed under the display panel,
wherein the frame structure includes a joint structure or hinge structure.
11. The display device of claim 7 , wherein the first transistor includes a metal oxide semiconductor, and
wherein the second transistor includes a poly-silicon semiconductor.
12. A display device comprising:
a display panel comprising a display area and a non-display area, the display area having a first area, a second area, and a third area disposed between the first area and the second area in an unfolded state, wherein the third area has a curvature in a folded state, with respect to a bending axis;
a sensing unit including touch signal lines and touch sensors disposed on the display panel;
an anti-reflection layer on the display panel;
a first adhesive member on the sensing unit;
a window on the first adhesive member; and
a frame structure disposed under the display panel,
wherein:
the display panel comprises:
a base layer overlapped with the display area and the non-display area;
a circuit layer including a first transistor and a second transistor disposed on the base layer;
light emitting elements disposed on the circuit layer, each of the light emitting elements comprising a first electrode, a second electrode disposed on the first electrode, and a light emitting layer disposed between the first electrode and the second electrode;
a pixel defining layer on the circuit layer, the pixel defining layer partially exposing the first electrode, wherein a light emitting area is defined in the display panel corresponding to a portion of the first electrode exposed from the pixel defining layer;
a capping layer on the second electrode;
a thin film sealing layer disposed on the capping layer; and
a protective film under the base layer;
the sensing unit is disposed on the thin film sealing layer;
each of touch sensors has a substantially mesh shape and comprises titanium and aluminum;
each of touch signal lines comprises titanium and aluminum;
each of the touch sensors is not overlapped with the light emitting area in a plan view;
the thin film sealing layer comprises an organic layer and an inorganic layer;
the second electrode is in common with the light emitting elements;
the frame structure includes a joint structure or hinge structure;
each of the plurality of touch sensors comprises a first sensor extended in a first direction crossing the bending axis to be formed from the first area through the third area to the second area and a second sensor extended in a second direction parallel to the bending axis; and
the first sensor and the second sensor face each other in the folded state.
13. The display device of claim 12 , wherein:
each of the plurality of touch sensors comprises a first sensor and a second sensor; and
the first sensor and the second sensor are disposed symmetrically with respect to the bending axis in the folded state.
14. The display device of claim 12 , wherein:
the first transistor includes a metal oxide semiconductor; and
the second transistor includes a poly-silicon semiconductor.