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KR-102963260-B1 - Display device

KR102963260B1KR 102963260 B1KR102963260 B1KR 102963260B1KR-102963260-B1

Abstract

A display device is provided. The display device comprises a substrate, a plurality of light-emitting parts disposed on the substrate and emitting light, a plurality of light-sensing parts disposed on the substrate and detecting incident light, a bank layer partitioning the plurality of light-emitting parts and the plurality of light-sensing parts, and a touch sensing layer including a touch electrode disposed on the bank layer, wherein a first distance between any one of the plurality of light-sensing parts and the touch electrode in one direction is shorter than a second distance between a first light-emitting part among the plurality of light-emitting parts and the touch electrode in one direction.

Inventors

  • 최민오
  • 김기범
  • 배광수
  • 송보광
  • 이대영

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260511
Application Date
20211001

Claims (20)

  1. Substrate; A plurality of light-emitting parts disposed on the above substrate and emitting light; A plurality of light-sensing parts disposed on the above substrate and detecting incident light; A bank layer partitioning the plurality of light-emitting parts and the plurality of light-sensing parts; A touch sensing layer comprising a touch electrode disposed on the bank layer; A light-emitting layer disposed on each of the plurality of light-emitting parts on the substrate; A photoelectric conversion layer disposed on each of the plurality of light-sensing parts on the substrate; and It includes a common electrode disposed on the light-emitting layer and the photoelectric conversion layer, and A display device in which the first distance between any one of the plurality of light-sensing parts and the touch electrode in one direction is shorter than the second distance between the first light-emitting part among the plurality of light-emitting parts and the touch electrode in one direction.
  2. In Article 1, A display device in which the width of the light-sensing part in the above direction is greater than the first distance.
  3. In Article 2, A display device in which the ratio of the width of the light-sensing part to the first distance in the above one direction is greater than 2.2 and less than 3.5.
  4. In Paragraph 3, A display device in which the width of the first light-emitting part in the above direction is longer than the width of the light-sensing part in the above direction.
  5. In Article 1, The above touch electrode is a display device that overlaps with the above bank layer.
  6. In Article 5, A display device in which the width of the touch electrode is smaller than the width of the light-sensing part.
  7. In Article 5, The above touch electrode is a display device including a mesh-type pattern.
  8. In Article 1, A display device in which the first light-emitting part and the light-sensing part are repeatedly arranged along one direction.
  9. In Article 8, The first light-emitting part is a display device that emits light of a green wavelength.
  10. delete
  11. Substrate; A pixel electrode and a first electrode disposed on the above substrate; A bank layer exposing the pixel electrode and the first electrode; A light-emitting layer disposed on the pixel electrode above; A photoelectric conversion layer disposed on the first electrode; A common electrode disposed in the light-emitting layer, the photoelectric conversion layer, and the bank layer; A touch sensing layer comprising a touch electrode disposed on the bank layer; A first hole defined by the touch electrode and overlapping with the light-emitting layer; and It further includes a second hole that overlaps with the above photoelectric conversion layer, and The first hole and the second hole are a display device that overlaps with the bank layer.
  12. In Article 11, A display device in which the one-directional width of the bank layer overlapping with the first hole is larger than the one-directional width of the bank layer overlapping with the second hole.
  13. In Article 11, The above touch electrode is a display device that overlaps with the above bank layer.
  14. In Article 11, The touch sensing layer comprises a first touch conductive layer, a touch insulating layer disposed on the first touch conductive layer, and a second touch conductive layer disposed on the touch insulating layer.
  15. In Article 14, The touch electrode includes a plurality of sensor parts arranged in one direction and a connecting part connecting each of the plurality of sensor parts. The first touch conductive layer includes the connection portion, and The second touch conductive layer is a display device comprising the plurality of sensor parts.
  16. In Article 15, The above plurality of sensor parts are a display device formed in a mesh pattern.
  17. In Article 11, A display device further comprising a light-blocking pattern disposed on the touch sensing layer and overlapping with the bank layer.
  18. In Article 17, The first hole and the second hole are a display device that overlaps with the light-blocking pattern.
  19. Substrate; A plurality of light-emitting parts disposed on the above substrate and emitting light; A plurality of light-sensing parts disposed on the above substrate and detecting incident light; A bank layer partitioning the plurality of light-emitting parts and the plurality of light-sensing parts; A touch sensing layer comprising a touch electrode disposed on the bank layer; A first hole defined by the touch electrode and exposing one of the plurality of light-emitting parts; A second hole defined by the touch electrode and exposing one of the plurality of light-sensing parts; A light-emitting layer disposed on each of the plurality of light-emitting parts on the substrate; A photoelectric conversion layer disposed on each of the plurality of light-sensing parts on the substrate; and It further includes a common electrode disposed on the light-emitting layer and the photoelectric conversion layer, The first hole and the second hole are a display device that overlaps with the bank layer.
  20. In Article 19, A display device in which the one-directional width of the bank layer overlapping with the first hole is larger than the one-directional width of the bank layer overlapping with the second hole.

Description

Display device {Display device} The present invention relates to a display device. The importance of display devices is increasing along with the development of multimedia. In response to this, various types of display devices, such as Liquid Crystal Displays (LCDs) and Organic Light Emitting Displays (OLEDs), are being used. Meanwhile, among display devices, organic light-emitting displays display images using organic light-emitting diodes (OLEDs) that generate light through the recombination of electrons and holes. These organic light-emitting displays have the advantages of fast response speeds, high brightness and viewing angles, and simultaneous operation with low power consumption. Recently, research and development have been underway regarding technology that integrates sensors for touch or fingerprint recognition into display panels. In this case, some of the light emitted from the light-emitting part is reflected by the touch electrode and acts as noise as it travels to the optical sensor for fingerprint recognition. FIG. 1 is a plan view of a display device according to one embodiment. FIG. 2 is a schematic cross-sectional view of a display device according to one embodiment. FIG. 3 is a schematic planar layout of a display layer according to one embodiment. FIG. 4 is a circuit diagram showing a pixel and a light sensor of a display layer according to one embodiment. FIG. 5 is a schematic planar layout of a touch sensing layer of a display panel according to one embodiment. Figure 6 is an enlarged view showing the unit detection area of Figure 5. Figure 7 is a cross-sectional view taken along IV-IV' of Figure 6. Figure 8 is an enlarged view showing area A of Figure 6 in detail. FIG. 9 is a cross-sectional view showing an example of a display device cut along I-I' of FIG. 8. FIG. 10 is a cross-sectional view showing an example of a display device cut along II-II' of FIG. 8. FIG. 11 is a schematic cross-sectional view showing an example of a cross-section of a display device corresponding to FIG. 10. Figure 12 is a cross-sectional view reflecting incident light in Figure 11. FIG. 13 is a schematic cross-sectional view showing an example of a cross-section of a pixel and a light sensor of a display device according to a comparative example. FIG. 14 is a graph showing an example of the ratio of the width of a light-sensing part of a display device and a first distance according to one embodiment. FIG. 15 is a graph showing another example of the ratio of the width of the light-sensing part of a display device and the first distance according to one embodiment. FIG. 16 is a graph showing another example of the ratio of the width of the light-sensing part of a display device and the first distance according to one embodiment. The advantages and features of the present invention and the methods for achieving them will become clear by referring to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below but may be implemented in various different forms. These embodiments are provided merely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. When an element or layer is referred to as being "on" another element or layer, this includes cases where another layer or element is interposed directly on or in the middle of another element. Throughout the specification, the same reference numerals refer to the same components. Shapes, sizes, ratios, angles, numbers, etc., disclosed in the drawings for describing embodiments are exemplary and therefore the invention is not limited to the depicted details. Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may also be the second component within the technical scope of the present invention. Specific embodiments will be described below with reference to the attached drawings. FIG. 1 is a plan view of a display device according to one embodiment. FIG. 1 indicates a first direction (X), a second direction (Y), and a third direction (Z). The first direction (X) is a direction parallel to one side of the display device (1) when viewed on a plane, and may be, for example, the horizontal direction of the display device (1). The second direction (Y) is a direction parallel to the other side that touches one side of the display device (1) when viewed on a plane, and may be the vertical direction of the display device (1). For convenience of explanation below, one side of the first direction (X) refers to the right direction in the plan view, and the other