Display apparatus with image acquisition region, manufacturing method and operating method thereof

Patent metadata

Field	Value
Publication number	US-11569214-B2
Application number	US-201816489688-A
Country	US
Kind code	B2
Filing date	Dec 28, 2018
Priority date	Aug 30, 2018
Publication date	Jan 31, 2023
Grant date	Jan 31, 2023

Abstract

A display apparatus includes a display panel having an image acquisition region within a display area, and an image acquisition device over a side of the display panel opposing to its display surface. The image acquisition device is at a position corresponding to the image acquisition region, and is configured to capture an image based on lights from an outside pattern over a side of the display panel proximal to the display surface. The display panel includes a substrate and a plurality of light-emitting elements over the substrate. The plurality of light-emitting elements comprises one or more first light-emitting elements positionally within the image acquisition region. At least one first light-emitting element includes a non-transparent electrode provided with at least one through-hole configured to allow the lights from the outside pattern to pass through the display panel.

First claim

The invention claimed is:

1. A display apparatus, comprising: a display panel, provided with an image acquisition region within a display area thereof; and an image acquisition device over a side of the display panel opposing to a display surface thereof and at a position corresponding to the image acquisition region, configured to capture an image based on lights from an outside pattern over a side of the display panel proximal to the display surface; wherein: the display panel comprises a substrate and a plurality of light-emitting elements over the substrate, wherein the plurality of light-emitting elements comprises one or more first light-emitting elements positionally within the image acquisition region of the display panel, wherein: each of at least one of the one or more first light-emitting elements comprises a non-transparent electrode, wherein the non-transparent electrode is provided with a plurality of through-holes therein, wherein through-holes of the one or more first light-emitting elements are distributed substantially uniformly in an inside-to-outside direction based on a center of the image acquisition region, and are configured to allow the lights from the outside pattern to pass through the display panel; the display apparatus further comprising an amplification circuit configured to amplify a signal that reflects the image so as to obtain an enhanced image signal while reducing negative influences of interference signals.

2. The display apparatus of claim 1 , wherein the image acquisition device is disposed over a side of the non-transparent electrode opposing to the substrate, wherein each of the one or more first light-emitting elements further comprises an organic light-emitting functional layer and a first electrode, wherein: the first electrode is substantially transparent; the organic light-emitting functional layer is between the first electrode and the non-transparent electrode; and the first electrode is between the substrate and organic light-emitting functional layer.

3. The display apparatus of claim 2 , wherein each of the one or more first light-emitting elements further comprises a thin film transistor over the substrate, wherein:
one of a drain electrode or a source electrode of the thin film transistor is electrically connected with the first electrode such that the thin film transistor can control a light-emitting state of the each of the one or more first light-emitting elements.

4. The display apparatus of claim 3 , wherein the thin film transistor comprises a gate electrode and an active layer, wherein:
the gate electrode is non-light-transmitting and is between the active layer and the organic light-emitting functional layer.

5. The display apparatus of claim 1 , wherein the image acquisition device is over a side of the substrate opposing to the non-transparent electrode.

6. The display apparatus of claim 5 , wherein each of the one or more first light-emitting elements further comprises an organic light-emitting functional layer and a first electrode, wherein:
the first electrode is substantially transparent;
the organic light-emitting functional layer is between the first electrode and the non-transparent electrode; and
the non-transparent electrode is between the organic light-emitting functional layer and the substrate.

7. The display apparatus of claim 6 , wherein the non-transparent electrode is configured to have a reflecting surface facing the organic light-emitting functional layer.

8. The display apparatus of claim 6 , wherein the non-transparent electrode comprises a first electrode sub-layer and a second electrode sub-layer, wherein:
the first electrode sub-layer is between the second electrode sub-layer and the substrate; and
the second electrode sub-layer has a reflective surface facing the organic light-emitting functional layer.

9. The display apparatus of claim 8 , wherein the first electrode sub-layer comprises an electrode material with a high work function value.

10. The display apparatus of claim 1 , wherein a number of the at least one of the one or more first light-emitting elements is more than one, wherein:
the non-transparent electrode in each of the at least one of the one or more first light-emitting elements is integrated with one another.

11. The display apparatus of claim 1 , wherein a number of the at least one of the one or more first light-emitting elements is more than one, wherein:
the non-transparent electrode in each of the at least one of the one or more first light-emitting elements is spaced apart from one another.

12. The display apparatus of claim 1 , wherein a cross-sectional shape of each of the at least one through-hole is a circle, a square, a polygon, or an irregular shape.

13. The display apparatus of claim 12 , wherein the cross-sectional shape is a circle with a diameter of approximately 2-10 microns.

14. The display apparatus of claim 1 , wherein:
the image acquisition device is configured to convert optical signals derived from the lights from the outside pattern into electrical signals; and
the display apparatus further comprises a control chip, electrically coupled to the image acquisition device and configured to receive and process the electrical signals outputted from the image acquisition device.

15. The display apparatus of claim 14 , further comprising a circuit board, wherein the control chip is electrically coupled to the image acquisition device via the circuit board.

16. The display apparatus of claim 15 , wherein:
the circuit board is further electrically connected to a circuit in the display panel; and
the control chip is further configured to control a display function of the display panel.

17. The display apparatus of claim 15 , wherein the circuit board is a flexible circuit board.

18. A method for manufacturing a display apparatus, comprising:
providing a display panel, wherein the display panel is provided with an image acquisition region within a display area thereof and comprises a substrate and a plurality of light-emitting elements over the substrate, wherein the plurality of light-emitting elements comprises one or more first light-emitting elements positionally within the image acquisition region, wherein each of at least one of the one or more first light-emitting elements comprises a non-transparent electrode provided with a plurality of through-holes therein, wherein through-holes of the one or more first light-emitting elements are distributed substantially uniformly in an inside-to-outside direction based on a center of the image acquisition region, and are configured to allow lights from an outside pattern to pass through the display panel;
disposing an image acquisition device over a side of the display panel opposing to a display surface thereof and at a position corresponding to the image acquisition region; and
providing an amplification circuit configured to amplify a signal that reflects the image so as to obtain an enhanced image signal while reducing negative influences of interference signals, wherein the image acquisition device is disposed over a side of the non-transparent electrode opposing to the substrate.

Assignees

• Hefei Xinsheng Optoelectronics Technology Co Ltd
• Boe Technology Group Co Ltd

Inventors

• Zhang Qing
• Yin Baoqing

Classifications

• H01L25/18 Primary

  Electricity · mapped topic

• H04N5/23229

  Electricity · mapped topic

• H04N5/2257

  Electricity · mapped topic

• H01L2251/5315

  Electricity · mapped topic

• H05K2201/10151

  Sensor · CPC title