US-12622151-B2 - Light emitting display device and electronic device having the same

Abstract

An electronic device including a light emitting display device includes: a first data conductive layer, a second data conductive layer, a green light emitting diode (LED) anode, a red light emitting diode (LED) anode, and a blue light emitting diode (LED) anode positioned on the second organic layer; a pixel definition layer including a green opening overlapping the green light emitting diode (LED) anode, a red opening overlapping the red light emitting diode (LED) anode, and a blue opening overlapping the blue light emitting diode (LED) anode. The first data conductive layer include a first expansion overlapping the red opening or the blue opening of the pixel definition layer, the second data conductive layer includes a second expansion overlapping the green opening of the pixel definition layer, and the second expansion of the second data conductive layer entirely overlaps the green opening of the pixel definition layer.

Inventors

• Jun Hee Lee
• Choong Youl Im
• Ha Seok JEON
• Hyun Duck CHO
• Beohm Rock Choi

Assignees

• SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date

20260505

Application Date

20230203

Priority Date

20220509

Claims (20)

1. 1 . A light emitting display device comprising: a lower panel layer comprising: a first semiconductor layer; a first gate insulating layer; a first gate conductive layer; a second gate insulating layer; a second gate conductive layer; a first interlayer insulating layer; a second semiconductor layer; a third gate insulating layer; a third gate conductive layer; a second interlayer insulating layer; a first data conductive layer; a first organic layer; a second data conductive layer; and a second organic layer, which are sequentially stacked on a substrate; a green light emitting diode (LED) anode, a red light emitting diode (LED) anode, and a blue light emitting diode (LED) anode positioned on the second organic layer; a pixel definition layer comprising a green opening overlapping the green light emitting diode (LED) anode, a red opening overlapping the red light emitting diode (LED) anode, and a blue opening overlapping the blue light emitting diode (LED) anode; a cathode positioned on the green light emitting diode (LED) anode, the red light emitting diode (LED) anode, the blue light emitting diode (LED) anode, and the pixel definition layer; and an encapsulation layer covering the cathode; and an upper panel layer comprising: a light blocking layer positioned on the encapsulation layer and comprising a green color filter opening, a red color filter opening, and a blue color filter opening; a green color filter positioned in the green color filter opening; a red color filter positioned in the red color filter opening; and a blue color filter positioned in the blue color filter opening, wherein the first data conductive layer comprises a first expansion overlapping the red opening or the blue opening of the pixel definition layer, the second data conductive layer comprises a second expansion overlapping the green opening of the pixel definition layer, and the second expansion of the second data conductive layer entirely overlaps the green opening of the pixel definition layer and does not overlap the red opening and the blue opening, in a plan view.
2. 2 . The light emitting display device of claim 1 , wherein the red opening or the blue opening of the pixel definition layer overlaps a first portion of the first gate conductive layer, a second portion of the second gate conductive layer, and a third portion of the third gate conductive layer, and distances between the first portion of the first gate conductive layer, the second portion of the second gate conductive layer, and the third portion of the third gate conductive layer are substantially same in a plan view.
3. 3 . The light emitting display device of claim 2 , wherein the second portion of the second gate conductive layer is adjacent to a side of the first portion of the first gate conductive layer, the third portion of the third gate conductive layer is adjacent to another side of the first portion of the first gate conductive layer, and a distance between the first portion of the first gate conductive layer and the second portion of the second gate conductive layer and a distance between the first portion of the first gate conductive layer and the third portion of the third gate conductive layer are substantially same as each other in a plan view.
4. 4 . The light emitting display device of claim 3 , wherein the first portion of the first gate conductive layer is a light emitting control line, the second portion of the second gate conductive layer is a connection part of a first storage electrode, and the third portion of the third gate conductive layer is a second initialization voltage line.
5. 5 . The light emitting display device of claim 4 , wherein the lower panel layer further comprises a plurality of pixel circuit parts electrically connected to the green light emitting diode (LED), the red light emitting diode (LED), and the blue light emitting diode (LED), respectively, each of the plurality of pixel circuit parts comprises: a driving transistor that transmits a current to the green light emitting diode (LED), the red light emitting diode (LED), or the blue light emitting diode (LED); a fifth transistor that transmits a driving voltage to a first electrode of the driving transistor; a sixth transistor electrically connected to a second electrode of the driving transistor to transmit a current to the green light emitting diode (LED), the red light emitting diode (LED), or the blue light emitting diode (LED); a seventh transistor that initializes the red light emitting diode (LED) anode, the blue light emitting diode (LED) anode, or the green light emitting diode (LED) anode; and a storage capacitor that stores a voltage of a gate electrode of the driving transistor, the first storage electrode overlaps the gate electrode of the driving transistor to form the storage capacitor, the light emitting control line is electrically connected to a gate electrode of the fifth transistor and a gate electrode of the sixth transistor, and the second initialization voltage line is electrically connected to the seventh transistor.
6. 6 . The light emitting display device of claim 5 , wherein each of the plurality of pixel circuit parts further comprises: a second transistor that transmits a data voltage to the first electrode of the driving transistor; a third transistor electrically connecting the second electrode of the driving transistor and the gate electrode of the driving transistor; and a fourth transistor that initializes the gate electrode of the driving transistor.
7. 7 . The light emitting display device of claim 5 , wherein the connection part of the first storage electrode comprises an upper side that is spaced apart from the upper side of the first storage electrode.
8. 8 . The light emitting display device of claim 5 , wherein the light emitting control line extends in a first direction, and the distance between the first portion of the first gate conductive layer and the second portion of the second gate conductive layer and the distance between the first portion of the first gate conductive layer and the third portion of the third gate conductive layer are distances in a second direction perpendicular to the first direction.
9. 9 . The light emitting display device of claim 1 , wherein the lower panel layer comprises: a metal layer and a buffer layer sequentially stacked between the substrate and the first semiconductor layer; a spacer positioned on the pixel definition layer; an emission layer positioned in the green opening, the red opening, and the blue opening of the pixel definition layer; and a functional layer positioned between the green light emitting diode (LED) anode, the red light emitting diode (LED) anode, and the blue light emitting diode (LED) anode, and the cathode.
10. 10 . The light emitting display device of claim 1 , wherein the upper panel layer further comprises: a plurality of sensing electrodes that sense a touch; and a plurality of sensing insulating layers positioned between the plurality of sensing electrodes.
11. 11 . The light emitting display device of claim 1 , wherein a polarizer is not attached to an entire surface of the green color filter, the red color filter, and the blue color filter.
12. 12 . The light emitting display device of claim 1 , wherein the first expansion of the first data conductive layer overlaps the red opening or the blue opening of the pixel definition layer, and the second expansion of the second data conductive layer overlaps the green opening of the pixel definition layer.
13. 13 . An electronic device comprising: a housing comprising a back surface and a side surface; a cover window disposed above the housing; a display panel disposed under the cover window and comprising a display area and a component area surrounded by the display area; and an optical sensor disposed in the component area of the display panel, the display panel comprises: a lower panel layer comprising: a first semiconductor layer; a first gate insulating layer; a first gate conductive layer; a second gate insulating layer; a second gate conductive layer; a first interlayer insulating layer; a second semiconductor layer; a third gate insulating layer; a third gate conductive layer; a second interlayer insulating layer; a first data conductive layer; a first organic layer; a second data conductive layer; and a second organic layer, which are sequentially stacked on a substrate; a green light emitting diode (LED) anode, a red light emitting diode (LED) anode, and a blue light emitting diode (LED) anode positioned on the second organic layer; a pixel definition layer comprising a green opening overlapping the green light emitting diode (LED) anode, a red opening overlapping the red light emitting diode (LED) anode, and a blue opening overlapping the blue light emitting diode (LED) anode; a cathode positioned on the green light emitting diode (LED) anode, the red light emitting diode (LED) anode, the blue light emitting diode (LED) anode, and the pixel definition layer; and an encapsulation layer covering the cathode; and an upper panel layer comprising: a light blocking layer positioned on the encapsulation layer and comprising a green color filter opening, a red color filter opening, and a blue color filter opening; a green color filter positioned in the green color filter opening; a red color filter positioned in the red color filter opening; and a blue color filter positioned in the blue color filter opening, wherein the first data conductive layer comprises a first expansion overlapping the red opening or the blue opening of the pixel definition layer, the second data conductive layer comprises a second expansion overlapping the green opening of the pixel definition layer, and the second expansion of the second data conductive layer entirely overlaps the green opening of the pixel definition layer and does not overlap the red opening and the blue opening in a plan view.
14. 14 . The electronic device of claim 13 , wherein the red opening or the blue opening of the pixel definition layer overlaps a first portion of the first gate conductive layer, a second portion of the second gate conductive layer, and a third portion of the third gate conductive layer, and distances between the first portion of the first gate conductive layer, the second portion of the second gate conductive layer, and the third portion of the third gate conductive layer is substantially same in a plan view.
15. 15 . The electronic device of claim 14 , wherein the second portion of the second gate conductive layer is adjacent to a side of the first portion of the first gate conductive layer, the third portion of the third gate conductive layer is adjacent to another side of the first portion of the first gate conductive layer, and a distance between the first portion of the first gate conductive layer and the second portion of the second gate conductive layer and a distance between the first portion of the first gate conductive layer and the third portion of the third gate conductive layer are substantially same as each other.
16. 16 . The electronic device of claim 15 , wherein the first portion of the first gate conductive layer is a light emitting control line, the second portion of the second gate conductive layer is a connection part of a first storage electrode, and the third portion of the third gate conductive layer is a second initialization voltage line.
17. 17 . The electronic device of claim 16 , wherein the lower panel layer further comprises a plurality of pixel circuit parts electrically connected to the green light emitting diode (LED), the red light emitting diode (LED), and the blue light emitting diode (LED), respectively, each of the plurality of pixel circuit parts comprises: a driving transistor that transmits a current to the green light emitting diode (LED), the red light emitting diode (LED), or the blue light emitting diode (LED); a fifth transistor that transmits a driving voltage to a first electrode of the driving transistor; a sixth transistor electrically connected to a second electrode of the driving transistor to transmit a current to the green light emitting diode (LED), the red light emitting diode (LED), or the blue light emitting diode (LED); a seventh transistor that initializes the red light emitting diode (LED) anode, the blue light emitting diode (LED) anode, or the green light emitting diode (LED) anode; and a storage capacitor that stores a voltage of a gate electrode of the driving transistor, the first storage electrode overlaps the gate electrode of the driving transistor to form the storage capacitor, the light emitting control line is electrically connected to a gate electrode of the fifth transistor and a gate electrode of the sixth transistor, and the second initialization voltage line is electrically connected to the seventh transistor.
18. 18 . The electronic device of claim 17 , wherein each of the plurality of pixel circuit parts further comprises: a second transistor that transmits a data voltage to the first electrode of the driving transistor; a third transistor electrically connecting the second electrode of the driving transistor and the gate electrode of the driving transistor; and a fourth transistor that initializes the gate electrode of the driving transistor.
19. 19 . The electronic device of claim 17 , wherein the connection part of the first storage electrode has an upper side spaced apart from the upper side of the first storage electrode.
20. 20 . The electronic device of claim 17 , wherein the light emitting control line extends in a first direction, and the distance between the first portion of the first gate conductive layer and the second portion of the second gate conductive layer and the distance between the first portion of the first gate conductive layer and the third portion of the third gate conductive layer are distances in a second direction perpendicular to the first direction.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application claims priority to and benefits of Korean Patent Application No. 10-2022-0056856 under 35 U.S.C. § 119, filed on May 9, 2022, in the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. BACKGROUND 1. Technical Field Embodiments relate to a light emitting display device and an electronic device including the light emitting display device. 2. Description of the Related Art A display device displays an image, and includes a liquid crystal display (LCD), an organic light emitting diode (OLED) display, and the like. The display device is applied to various electronic devices such as a mobile phone, a navigation device, a digital camera, an electronic book, a portable game machine, and various terminals. The display device such as the organic light emitting display device may have a structure in which the display device may be bent or folded by using a flexible substrate. In small electronic devices such as portable phones, optical elements such as cameras and optical sensors are formed in a bezel area, which is a peripheral area of the display area. However, as the size of the screen for display is increased, the size of the peripheral area of the display area has been gradually reduced. Thus, a technology that implements the cameras or the optical sensors to be positioned on the back side of the display area is being developed. The above information disclosed in this Background section is only for enhancement of understanding of the background of the described technology, and therefore it may contain information that does not form the prior art that is already known in this country to a person of ordinary skill in the art. SUMMARY Embodiments provide an electronic device including a light emitting display device capable of improving display quality by reducing a green reflective color band generated by asymmetrically reflecting external light passing through a green color filter. However, embodiments of the disclosure are not limited to those set forth herein. The above and other embodiments will become more apparent to one of ordinary skill in the art to which the disclosure pertains by referencing the detailed description of the disclosure given below. In an embodiment, a light emitting display device include a lower panel layer including: a first semiconductor layer; a first gate insulating layer; a first gate conductive layer; a second gate insulating layer; a second gate conductive layer; a first interlayer insulating layer; a second semiconductor layer; a third gate insulating layer; a third gate conductive layer; a second interlayer insulating layer; a first data conductive layer; a first organic layer; a second data conductive layer; and a second organic layer, which are sequentially stacked on a substrate, a green light emitting diode (LED) anode, a red light emitting diode (LED) anode, and a blue light emitting diode (LED) anode positioned on the second organic layer; a pixel definition layer including a green opening overlapping the green light emitting diode (LED) anode, a red opening overlapping the red light emitting diode (LED) anode, and a blue opening overlapping the blue light emitting diode (LED) anode; a cathode positioned on the green light emitting diode (LED) anode, the red light emitting diode (LED) anode, the blue light emitting diode (LED) anode, and the pixel definition layer; and an encapsulation layer covering the cathode; and an upper panel layer including: a light blocking layer positioned on the encapsulation layer and including a green color filter opening, a red color filter opening, and a blue color filter opening; a green color filter positioned in the green color filter opening; a red color filter positioned in the red color filter opening; and a blue color filter positioned in the blue color filter opening, the first data conductive layer may include a first expansion overlapping the red opening or the blue opening of the pixel definition layer, the second data conductive layer may include a second expansion overlapping the green opening of the pixel definition layer, and the second expansion may entirely overlaps the green opening of the pixel definition layer in a plan view. The red opening or the blue opening of the pixel definition layer may overlap a first portion of the first gate conductive layer, a second portion of the second gate conductive layer, and a third portion of a third gate conductive layer, and distances between the first portion, the second portion, and the third portion may be substantially same in a plan view. The second portion of the second gate conductive layer may be adjacent to a side of the first portion of the first gate conductive layer, the third portion may be adjacent to another side of the first portion of the first gate conductive layer, and a distance between the first portion of the first gate conductive layer and the second por