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US 10,474,279 B2Granted
Organic light emitting display device
AssigneeLG Display Co., Ltd.
InventorsJongHee Hwang, KiDuk Kim, EunJung Kim
Life of this patent
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Abstract
Disclosed is an organic light emitting display device including an encapsulation layer covering a pixel array layer provided on a substrate and a cover window coupled to a touch sensing layer. The touch sensing layer includes a first touch electrode layer provided on the encapsulation layer, a second touch electrode layer provided on the first touch electrode layer, and a thickness modification member between the first touch electrode layer and the second touch electrode layer.
Claims19
An organic light emitting display device comprising:
- a display layer comprising:
- a substrate,
- a pixel array layer on the substrate, the pixel array layer including a plurality of pixels, each of the plurality of pixels including a thin film transistor (TFT) and an organic light emitting diode, and
- an encapsulation layer covering the pixel array layer;
- a cover window;
- and
- a touch sensing layer directly on the display layer, the touch sensing layer disposed between the display layer and the cover window, the touch sensing layer comprising:
- a first touch electrode layer on the encapsulation layer,
- a second touch electrode layer between the first touch electrode layer and the cover window, and
- a thickness modification member between the first touch electrode layer and the second touch electrode layer,
- wherein the first touch electrode layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes,
- wherein the second touch electrode layer comprises a plurality of third touch electrodes on the thickness modification member, the plurality of third touch electrodes intersecting the plurality of second touch electrodes,
- wherein the second touch electrode layer further comprises a plurality of first secondary electrodes and a plurality of second secondary electrodes disposed along the plurality of third touch electrodes, each of the plurality of third touch electrodes disposed between an adjacent one of the first secondary electrodes and an adjacent one of the second secondary electrodes,
- wherein the plurality of third touch electrodes, the plurality of first secondary electrodes, and the plurality of second secondary electrodes are electrically floated during a touch position sensing period, and
- wherein each of the plurality of third touch electrodes is electrically connected to the adjacent one of the first secondary electrodes and the adjacent one of the second secondary electrodes during a touch force sensing period.
12 more elements
An organic light emitting display device comprising:
- a display layer comprising:
- a substrate,
- a pixel array layer on the substrate, the pixel array layer including a plurality of pixels, each of the plurality of pixels including a thin film transistor (TFT) and an organic light emitting diode, and
- an encapsulation layer covering the pixel array layer;
- a cover window;
- and
- a touch sensing layer directly on the display layer, the touch sensing layer disposed between the display layer and the cover window, the touch sensing layer comprising:
- a first touch electrode layer on the encapsulation layer, a second touch electrode layer between the first touch electrode layer and the cover window, and
- a thickness modification member between the first touch electrode layer and the second touch electrode layer,
- wherein the first touch electrode layer further comprises:
- an electrode insulation layer between the plurality of first touch electrodes and the plurality of second touch electrodes,
- wherein a plurality of first touch electrodes are disposed directly on the encapsulation layer,
- wherein a plurality of second touch electrodes intersect with the plurality of first touch electrodes, and
- wherein the electrode insulation layer is in contact with the encapsulation layer-through spaces between the plurality of first touch electrodes,
- wherein the second touch electrode layer comprises a plurality of third touch electrodes directly on a side of the cover window facing the thickness modification member,
- wherein the first touch electrode layer further comprises a plurality of first secondary electrodes and a plurality of second secondary electrodes disposed along the plurality of second touch electrodes, each of the plurality of second touch electrodes disposed between an adjacent one of the first secondary electrodes and an adjacent one of the second secondary electrodes,
- wherein the plurality of third touch electrodes, the plurality of first secondary electrodes, and the plurality of second secondary electrodes are electrically floated during a touch position sensing period, and
- wherein each of the plurality of second touch electrodes is electrically connected to the adjacent one of the first secondary electrodes and the adjacent one of the second secondary electrodes during a touch force sensing period.
15 more elements
An organic light emitting display device comprising:
- a display layer comprising:
- a substrate,
- a pixel array layer on the substrate, the pixel array layer including a plurality of pixels, each of the plurality of pixels including a thin film transistor (TFT) and an organic light emitting diode, and
- an encapsulation layer covering the pixel array layer;
- a cover window;
- and
- a touch sensing layer directly on the display layer, the touch sensing layer disposed between the display layer and the cover window, the touch sensing layer comprising:
- a first touch electrode layer on the encapsulation layer,
- a second touch electrode layer between the first touch electrode layer and the cover window, and
- a thickness modification member between the first touch electrode layer and the second touch electrode layer,
- wherein the display layer further comprises:
- a black matrix disposed between the encapsulation layer and the first touch electrode layer, the black matrix defining an opening area of each of the plurality of pixels;
- a color filter layer disposed m the opening area of each of the plurality of pixels;
- and
- a buffer layer covering the black matrix and the color filter layer, and
- wherein the first touch electrode layer comprises:
- a plurality of first touch electrodes directly on the buffer layer,
- a plurality of second touch electrodes intersecting the plurality of first touch electrodes, and
- an electrode insulation layer between the plurality of first touch electrodes and the plurality of second touch electrodes, the electrode insulation layer in contact with the buffer layer through spaces between the plurality of first touch electrodes.
16 more elements
An organic light emitting display device comprising:
- a display layer comprising:
- a substrate,
- a pixel array layer on the substrate, the pixel array layer including a plurality of pixels, each of the plurality of pixels including a thin film transistor (TFT) and an organic light emitting diode, and
- an encapsulation layer covering the pixel array layer;
- a cover window;
- and
- a touch sensing layer directly on the display layer, the touch sensing layer disposed between the display layer and the cover window, the touch sensing layer comprising:
- a first touch electrode layer directly on the encapsulation layer,
- a second touch electrode layer between the first touch electrode layer and the cover window, and
- a thickness modification member between the first touch electrode layer and the second touch electrode layer,
- wherein the display layer further comprises:
- a black matrix disposed between the encapsulation layer and the first touch electrode layer, the black matrix defining an opening area of each of the plurality of pixels;
- a color filter layer disposed in the opening area of each of the plurality of pixels;
- and
- a buffer layer covering the black matrix and the color filter layer,
- wherein the second touch electrode layer comprises a plurality of first touch electrodes and a plurality of second touch electrodes directly on a side of the cover window facing the thickness modification member, and
- wherein the first touch electrode layer comprises a third touch electrode directly on the buffer layer.
14 more elements
Dependencies are inferred from the claim text.