US-12619325-B2 - Display device including a touch electrode

US12619325B2US 12619325 B2US12619325 B2US 12619325B2US-12619325-B2

Abstract

A display device includes a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a touch electrode disposed on the pixel defining layer. A shape of a mesh hole defined by the touch electrode and in which the plurality of light sensing units are disposed is defined by the touch electrode, and is different from a shape of a mesh hole in which a first light emitting unit among the plurality of light emitting units is disposed.

Inventors

Yu Jin Lee
Hee Rim SONG
Cheol Gon LEE
Mu Kyung JEON

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20230118
Priority Date: 20220405

Claims (20)

1 . A display device, comprising: a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a touch electrode disposed on the pixel defining layer, wherein a shape of a mesh hole defined by the touch electrode and in which the plurality of light sensing units are disposed is defined by the touch electrode, and is different from a shape of a mesh hole in which a particular light emitting unit among the plurality of light emitting units is disposed, wherein a first distance between any one of the plurality of light sensing units and the touch electrode in one direction is equal to a second distance between the touch electrode and the particular light emitting unit, of the plurality of light emitting units, adjacent to the light sensing unit in the one direction, wherein the mesh hole in which each of the plurality of light sensing units is disposed has a rectangular planar shape, and the mesh hole in which each the plurality of light emitting units is disposed has a hexagonal planar shape, wherein the rectangular mesh hole of each of the plurality of light sensing units is surrounded on four sides thereof by four hexagonal mesh holes of four light emitting units of the plurality of light emitting units that are closest thereto, and wherein the rectangular mesh hole of the plurality of light sensing units combines with the hexagonal mesh holes of the four light emitting units to form an octagonal pixel unit in which the rectangular mesh hole of the plurality of light sensing units is at a center of.
2 . The display device of claim 1 , wherein a planar shape of the plurality of light sensing units is different from the shape of the mesh hole in which the plurality of light sensing units are disposed.
3 . The display device of claim 1 , wherein a planar shape of the particular light emitting unit among the plurality of light emitting units is different from the shape of the mesh hole in which the particular light emitting unit among the plurality of light emitting units is disposed.
4 . The display device of claim 3 , wherein a planar shape of the plurality of light sensing units is equal to the shape of the mesh hole in which the plurality of light sensing units are disposed.
5 . The display device of claim 1 , wherein: the plurality of light emitting units comprise first light emitting units, second light emitting units, third light emitting units, and fourth light emitting units spaced apart from each other, the first light emitting units are alternately arranged with the third light emitting units in a first direction, and the second light emitting units are alternately arranged with the fourth light emitting units in a second direction intersecting the first direction, wherein the first light emitting units, the second light emitting units, and the third light emitting units may each emit light of a different color and the fourth light emitting units emits light of a same color as one of the first light emitting units, the second light emitting units, and the third light emitting units.
6 . The display device of claim 5 , wherein the light sensing unit is disposed between the first light emitting units and the third light emitting units adjacent in the second direction, and disposed between the second light emitting units and the fourth light emitting units adjacent in the first direction.
7 . The display device of claim 1 , wherein the particular light emitting unit comprises an anode electrode on the substrate, a cathode electrode on the pixel electrode and a light emitting layer disposed between the anode electrode and the cathode electrode, wherein each of the plurality of light sensing units comprises a first electrode on the substrate, a second electrode on the first electrode and a photoelectric conversion layer disposed between the second electrode and the first electrode, and wherein the cathode electrode and the second electrode are integrally formed as one body.
8 . A display device, comprising: a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a touch electrode disposed on the pixel defining layer, wherein the touch electrode comprises first electrode lines extending in a first direction, second electrode lines extending in a second direction intersecting the first direction, third electrode lines extending in a first diagonal direction inclined with respect to the first direction, and fourth electrode lines extending in a second diagonal direction intersecting the first diagonal direction, wherein a first distance between any one of the plurality of light sensing units and the touch electrode in one direction is equal to a second distance between the touch electrode and a particular light emitting unit, of the plurality of light emitting units, adjacent to the light sensing unit in the one direction, wherein the touch electrode defines rectangular mesh holes surrounding each of the plurality of light emitting units and hexagonal mesh holes surrounding each of the plurality of light sensing units, wherein the rectangular mesh hole of each of the plurality of light sensing units is surrounded on four sides thereof by four hexagonal mesh holes of four light emitting units of the plurality of light emitting units that are closest thereto, and wherein the rectangular mesh hole of the plurality of light sensing units combines with the hexagonal mesh holes of the four light emitting units to form an octagonal pixel unit in which the rectangular mesh hole of the plurality of light sensing units is at a center of.
9 . The display device of claim 8 , wherein each of the plurality of light sensing units is at least partially surrounded by the first electrode lines and the second electrode lines.
10 . The display device of claim 9 , wherein: a first particular light emitting unit among the plurality of light emitting units is at least partially surrounded by the first electrode lines, the third electrode lines, and the fourth electrode lines, and a second particular light emitting unit among the plurality of light emitting units is at least partially surrounded by the second electrode lines, the third electrode lines, and the fourth electrode lines.
11 . The display device of claim 10 , wherein the second particular light emitting unit among the plurality of light emitting units is at least partially surrounded by the first electrode lines, the second electrode lines, the third electrode lines, and the fourth electrode lines.
12 . The display device of claim 8 , further comprising: a scan line connected to the plurality of light emitting units and applying a scan signal; and a data line connected to the plurality of light emitting units and applying a data voltage, wherein the scan line extends in the first direction, and the data line extends in the second direction.
13 . The display device of claim 8 , wherein the touch electrode comprises a plurality of first sensor portions and a first connection portion connecting the plurality of first sensor portions in contact areas, and wherein a width of each of the contact areas in one direction is greater than a width of the first electrode lines in one direction.
14 . The display device of claim 8 , wherein: the plurality of light emitting units comprise first light emitting units, second light emitting units, third light emitting units, and fourth light emitting units spaced apart from each other, the first light emitting units are alternately arranged with the third light emitting units in a first direction, and the second light emitting units are alternately arranged with the fourth light emitting units in a second direction intersecting the first direction, wherein the first light emitting units, the second light emitting units, and the third light emitting units may each emit light of a different color and the fourth light emitting units emits light of a same color as one of the first light emitting units, the second light emitting units, and the third light emitting units.
15 . The display device of claim 8 , wherein: each of the first electrode lines includes a first sub-electrode line at least partially surrounding each of the plurality of light sensing units and a second sub-electrode line at least partially surrounding any one of the plurality of light emitting units, and each of the second electrode lines comprises a third sub-electrode line at least partially surrounding each of the plurality of light sensing units and a fourth sub-electrode line at least partially surrounding another one of the plurality of light emitting units.
16 . The display device of claim 8 , wherein the particular light emitting unit comprises an anode electrode on the substrate, a cathode electrode on the pixel electrode and a light emitting layer disposed between the anode electrode and the cathode electrode, wherein each of the plurality of light sensing units comprises a first electrode on the substrate, a second electrode on the first electrode and a photoelectric conversion layer disposed between the second electrode and the first electrode, and wherein the cathode electrode and the second electrode are integrally formed as one body.
17 . An electronic device, comprising: a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a plurality of first sensor portions disposed on the pixel defining layer and extending in one direction and a contact area connecting the plurality of first sensor portions, wherein the plurality of first sensor portions comprise a first electrode line disposed outside any one of the plurality of light sensing units and a second electrode line intersecting the first electrode line, wherein the contact area is not disposed on either the first electrode line or the second electrode line, wherein a first distance between any one of the plurality of light sensing units and the first sensor portions in one direction is equal to a second distance between the first sensor portions and a particular light emitting unit, of the plurality of light emitting units, adjacent to the light sensing unit in the one direction, wherein the first and second electrode lines define rectangular mesh holes surrounding each of the plurality of light emitting units and hexagonal mesh holes surrounding each of the plurality of light sensing units, wherein the rectangular mesh hole of each of the plurality of light sensing units is surrounded on four sides thereof by four hexagonal mesh holes of four light emitting units of the plurality of light emitting units that are closest thereto, and wherein the rectangular mesh hole of the plurality of light sensing units combines with the hexagonal mesh holes of the four light emitting units to form an octagonal pixel unit in which the rectangular mesh hole of the plurality of light sensing units is at a center of.
18 . The electronic device of claim 17 , wherein: the plurality of first sensor portions further comprise a third electrode line and a fourth electrode line that intersect in different directions from the first electrode line and the second electrode line, and the contact area is formed in a region where the third electrode line and the fourth electrode line intersect.
19 . The electronic device of claim 17 , wherein: each of the first electrode lines comprises a first sub-electrode line disposed outside any one of the plurality of light sensing units and a second sub-electrode line disposed outside any one of the plurality of light emitting units, each of the second electrode lines comprises a third sub-electrode line at least partially surrounding each of the plurality of light sensing units and a fourth sub-electrode line at least partially surrounding another one of the plurality of light emitting units, and the contact area is disposed on the second sub-electrode line.
20 . The electronic device of claim 17 , wherein a first width of one of the first electrode line and the second electrode line in one direction is smaller than a second width of the contact area in the one direction.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority under 35 U.S.C. § 119 to Korean Patent Application No. 10-2022-0041994, filed on Apr. 5, 2022, in the Korean Intellectual Property Office, the contents of which are herein incorporated by reference in its entirety. TECHNICAL FIELD The present disclosure relates to a display device and, more specifically, to a display device including a touch electrode. DISCUSSION OF THE RELATED ART Display devices are employed in various electronic devices such as smartphones, digital cameras, laptop computers, navigation devices, smart watches and smart televisions. The display device may be a flat panel display device such as a liquid crystal display device, a field emission display device, and an organic light emitting display device. Optical sensors for touch recognition or fingerprint recognition may be incorporated into the display panels of display devices. In addition, the display panel may include a touch member for recognizing a touch input. The touch member determines whether a user's touch input is made by using a plurality of touch electrodes, and calculates a corresponding position as touch input coordinates. SUMMARY A display device includes a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a touch electrode disposed on the pixel defining layer. A shape of a mesh hole defined by the touch electrode and in which the plurality of light sensing units are disposed is defined by the touch electrode, and is different from a shape of a mesh hole in which a first light emitting unit among the plurality of light emitting units is disposed. A display device includes a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a touch electrode disposed on the pixel defining layer. The touch electrode includes first electrode lines extending in a first direction, second electrode lines extending in a second direction intersecting the first direction, third electrode lines extending in a first diagonal direction inclined with respect to the first direction, and fourth electrode lines extending in a second diagonal direction intersecting the first diagonal direction. A display device includes a substrate; a plurality of light emitting units disposed on the substrate; a plurality of light sensing units disposed on the substrate; a pixel defining layer partitioning the plurality of light emitting units and the plurality of light sensing units; and a plurality of first sensor portions disposed on the pixel defining layer and extending in one direction and a contact area configured to connect the plurality of first sensor portions. The plurality of first sensor portions includes a first electrode line disposed outside any one of the plurality of light sensing units and a second electrode line intersecting the first electrode line. The contact area is not disposed on the first electrode line and the second electrode line. BRIEF DESCRIPTION OF THE DRAWINGS The above and other aspects and features of the present disclosure will become more apparent by describing in detail embodiments thereof with reference to the attached drawings, in which: FIG. 1 is a plan view illustrating a display device according to an embodiment of the present disclosure; FIG. 2 illustrates fingerprint sensing of a display device according to an embodiment of the present disclosure; FIG. 3 is a schematic plan layout view of a display layer according to an embodiment of the present disclosure; FIG. 4 is a circuit diagram illustrating a pixel and an optical sensor according to an embodiment of the present disclosure; FIG. 5 is a schematic plan layout view of a touch sensing layer of a display panel according to an embodiment of the present disclosure; FIG. 6 is an enlarged view illustrating a pixel and an optical sensor of a display layer and touch electrodes of a touch sensing layer according to an embodiment of the present disclosure; FIG. 7 is an enlarged view illustrating area A of FIG. 6 in detail; FIG. 8 is a cross-sectional view illustrating an example of the display device taken along line I-I′ of FIG. 7; FIG. 9 is a cross-sectional view illustrating an example of the display device taken along line II-II′ of FIG. 7; FIG. 10 is an enlarged view illustrating a pixel and an optical sensor of a display layer and touch electrodes of a touch sensing layer according to an embodiment of the present disclosure; FIG. 11 is an enlarged view illustrating area B of FIG. 10 in detail according to an embodiment of the present disclosure; FIG. 12 is a cross-sectional view illustrating an example