Display with integrated electrodes

• US 10,289,252 B2
• Filed: 10/08/2015
• Issued: 05/14/2019
• Est. Priority Date: 06/18/2015
• Status: Active Grant

• Current Assignee: X Display Company Technology Limited (Sensinnovat BVBA)
• Original Assignee: X-Celeprint Limited
• Inventors: Cok, Ronald S.
• Primary Examiner(s): Osorio, Ricardo
• Application Number:
  US14/878,642
• Publication Number:
  US 20170102797A1
• Time in Patent Office: 1,314 Days
• CPC Class Codes: G02F 1/13318 Circuits comprising a photodetector
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G02F 1/133553 Reflecting elements associated to illuminating devices G02F1/133605
• CPC Class Codes: G02F 1/133601 for spatial active dimming
• CPC Class Codes: G02F 1/133603 with LEDs
• CPC Class Codes: G02F 1/133616 Front illuminating devices
• CPC Class Codes: G02F 2201/50 Protective arrangements
• CPC Class Codes: G02F 2203/02 reflective
• CPC Class Codes: G06F 2203/04111 Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
• CPC Class Codes: G06F 2203/04112 Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/04164 Connections between sensors and controllers, e.g. routing lines between electrodes and connection pads
• CPC Class Codes: G06F 3/0443 using a single layer of sensing electrodes
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
• CPC Class Codes: G09G 2300/0426 Layout of electrodes and connections
• CPC Class Codes: G09G 2354/00 Aspects of interface with display user
• CPC Class Codes: G09G 3/32 semiconductive, e.g. using light-emitting diodes [LED]
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 25/167 comprising optoelectronic devices, e.g. LED, photodiodes
• CPC Class Codes: H01L 33/60 : Reflective elements
• CPC Class Codes: H01L 33/62 : Arrangements for conducting electric current to or from the semiconductor body, e.g. lead-frames, wire-bonds or solder balls

Abstract

An inorganic light-emitting diode display with integrated electrodes includes a display surface having a display area and a plurality of spatially separated light-emitting diodes (such as inorganic light-emitting diodes) disposed in rows on the display surface in the display area. The inorganic light-emitting diodes in each row of inorganic light-emitting diodes are electrically connected by one or more electrical conductors. One or more row touch electrodes are disposed in rows over the display surface in the display area between the rows of inorganic light-emitting diodes and are disposed on the display surface and have a width that is larger than a length and width of the light-emitting diodes. A display with an integrated touch screen includes one or more sensing elements disposed in a common plane with the light emitters or on a side of the light emitters opposite the display surface.

Claims

1. A light-emitting diode display with integrated electrodes, comprising:

a display substrate comprising a display surface having a display area;

a plurality of spatially separated printed inorganic light-emitting diodes (LEDs) disposed in rows on the display surface in the display area, the LEDs in each row of the LEDs electrically connected by one or more electrical conductors; and

two or more electrically separate row touch electrodes disposed in rows on the display surface in the display area between rows of the LEDs, wherein each of the two or more row touch electrodes have a width between the rows of the LEDs that is larger than a length and a width of each of the plurality of LEDs, wherein the two or more row touch electrodes are electrically separate from the plurality of LEDs and are electrically separate from the one or more electrical conductors, and wherein the two or more row touch electrodes are disposed only between the LEDs on the display surface and not over or under the LEDs.

2. The display of claim 1, wherein the plurality of spatially separated printed LEDs comprise red light emitters emitting red light, green light emitters emitting green light, and blue light emitters emitting blue light.

3. The display of claim 2, comprising a plurality of pixels, wherein:

each pixel comprises a red light emitter, a green light emitter, and a blue light emitter; and

the distance between any two light emitters in a respective pixel is less than the distance between adjacent pixels.

4. The display of claim 1, wherein the two or more row touch electrodes are opaque.

5. The display of claim 1, comprising one or more column touch electrodes disposed over the display surface in the display area, the one or more column touch electrodes extending in a different direction than the row touch electrodes.

6. The display of claim 5, wherein the LEDs are disposed in columns and the column touch electrodes are disposed only between the columns of LEDs in a direction parallel to the display surface.

7. The display of claim 5, wherein the one or more column touch electrodes are opaque.

8. The display of claim 1, comprising a light-absorbing layer located on a common layer with the LEDs.

9. The display of claim 1, comprising a light-absorbing layer located at least partially between the two or more row touch electrodes and the display surface or at least partially on a side of the row touch electrodes opposite the display surface.

10. The display of claim 1, wherein the two or more row touch electrodes are disposed on the display surface in a common plane with the inorganic light-emitting diodes.

11. The display of claim 1, comprising a controller comprising a controller circuit electrically connected to the two or more row touch electrodes that provides signals to and senses the two or more row touch electrodes to detect touches on or near the LEDs.

12. The display of claim 1, wherein the plurality of LEDs and the two or more row touch electrodes are disposed directly on and in contact with the display surface.

13. A display with an integrated touch screen, comprising:

a display substrate comprising a display surface having a display area;

a plurality of spatially separated printed inorganic light emitters disposed on the display surface in the display area, the plurality of inorganic light emitters electrically connected by one or more electrical conductors; and

a touch screen including two or more electrically separate sensing elements, wherein the sensing elements are disposed only between the inorganic light emitters in a direction parallel to the display surface and in a common plane with the inorganic light emitters and not over or under the inorganic light emitters, and each have a width between adjacent ones of the inorganic light emitters that is larger than a length and a width of each of the plurality of inorganic light emitters, wherein the two or more sensing elements are electrically separate from the plurality of inorganic light emitters and are electrically separate from the one or more electrical conductors.

14. The display of claim 13, wherein the sensing elements are not visually transparent.

15. The display of claim 13, comprising a light-absorbing layer located at least partially in a common layer with the light emitters, at least partially in a layer behind the light emitters in a direction orthogonal to the display surface, or at least partially in a layer on a side of the sensing elements opposite the display surface.

16. The display of claim 15, wherein the light-absorbing layer includes optical vias in which the light emitters are disposed.

17. The display of claim 13, wherein the sensing elements each include two or more sensing components and all of the sensing components are disposed in the common plane with the light emitters.

18. The display of claim 13, wherein the sensing elements each include two or more sensing components and all of the sensing components are disposed on a side of the light emitters opposite the display surface in a direction orthogonal to the display surface.

19. The display of claim 13, wherein the sensing elements each include two or more sensing components and at least one sensing component is disposed in the common plane with the light emitters and at least one sensing component is disposed on a side of the light emitters opposite the display surface in a direction orthogonal to the display surface.

20. A display with an integrated touch screen, comprising:

a display substrate comprising a display surface having a display area;

a plurality of spatially separated printed inorganic light emitters disposed on the display surface in the display area that emit light through the display surface, the plurality of inorganic light emitters electrically connected by one or more electrical conductors; and

a touch screen including two or more electrically separate sensing elements, wherein the sensing elements are disposed on a side of the inorganic light emitters opposite the display surface only between the inorganic light emitters in a direction parallel to the display surface and not over or under the inorganic light emitters, and each have a width between adjacent ones of the inorganic light emitters that is larger than a length and a width of each of the plurality of inorganic light emitters, wherein the two or more sensing elements are electrically separate from the plurality of inorganic light emitters and are electrically separate from the one or more electrical conductors.

21. An inorganic light-emitting diode display with integrated electrodes, comprising:

a display substrate comprising a display surface having a display area;

a plurality of spatially separated printed inorganic light-emitting diodes (LEDs) disposed on the display surface in rows and columns in the display area, the plurality of LEDs electrically connected by one or more electrical conductors;

a plurality of electrically separate row touch electrodes disposed in rows over the display surface in the display area only between the plurality of LEDs in a direction parallel to the display surface and not over or under the LEDs, and each have a width between the rows of the LEDs that is larger than a length and a width of each of the plurality of LEDs, wherein the plurality of row touch electrodes are electrically separate from the plurality of LEDs and are electrically separate from the one or more electrical conductors; and

a plurality of electrically separate column touch electrodes disposed in columns over the display surface in the display area only between the LEDs in a direction parallel to the display surface and not over or under the LEDs, and each have a width between the columns of the LEDs that is larger than a length and a width of each of the plurality of LEDs, wherein the plurality of column touch electrodes are electrically separate from the plurality of LEDs, and are electrically separate from the one or more electrical conductors.

22. The display of claim 21, wherein the row touch electrodes, the column touch electrodes, or both the row touch electrodes and the column touch electrodes are opaque.

23. The display of claim 21, wherein the row touch electrodes, the column touch electrodes, or both the row touch electrodes and the column touch electrodes are located on a side of the LEDs adjacent to the display surface.