Optical detection panel, fabricating method thereof and display apparatus

Patent metadata

Field	Value
Publication number	US-11469341-B2
Application number	US-201916638523-A
Country	US
Kind code	B2
Filing date	Oct 8, 2019
Priority date	Jan 31, 2019
Publication date	Oct 11, 2022
Grant date	Oct 11, 2022

Abstract

The present disclosure relates to an optical detection panel. The optical detection panel may include a first substrate and a second substrate opposite the first substrate, a photosensitive component and a driving thin film transistor at a side of the second substrate facing the first substrate, a first electrode and a second electrode at a side of the second substrate facing the first substrate, and a plurality of microlenses at a side of the photosensitive component opposite from the second substrate. The second electrode may be connected to the driving thin film transistor.

First claim

What is claimed is:

1. An optical detection panel, comprising:
a first substrate and a second substrate;
photosensitive component and a driving thin film transistor;
a first electrode and a second electrode; and
a plurality of microlenses;
wherein the first substrate is an upper substrate, the second substrate is a lower substrate, the photosensitive component, the driving thin film transistor, the first electrode, the second electrode, and the plurality of microlenses are disposed between the first substrate and the second substrate;
the photosensitive component, the driving thin film transistor, and the second electrode are disposed at a side of the second substrate facing the first substrate, the second electrode is connected to the driving thin film transistor, the first electrode is disposed at a side of the first substrate facing the second substrate, the first substrate and the second substrate is mounted together to form a gap between the first electrode and the second electrode, and the plurality of microlenses is disposed in the gap; and
the first substrate and the second substrate are encapsulated using a frame sealant to form the gap, and each of the plurality of microlenses locates at a fixed position in the gap.

2. The optical detection panel of claim 1 , further comprising:
a readout thin film transistor at the side of the second substrate facing the first substrate,
wherein the photosensitive component is configured to generate electrical signals when being exposed to the light, and
the readout thin film transistor is configured to receive the electrical signals generated by the photosensitive component.

3. The optical detection panel according to claim 2 , further comprising:
a first hydrophobic layer at a side of the first electrode facing the second electrode; and
a second hydrophobic layer at a side of the second electrode facing the first electrode,
wherein each of the plurality of microlenses is formed from a droplet, the droplet is between the first hydrophobic layer and the second hydrophobic layer, and each of the plurality of microlenses is configured to focus light onto the photosensitive component under control of an electric field between the first electrode and the second electrode.

4. The optical detecting panel according to claim 3 , wherein the optical detection panel is a detection panel for detecting X-ray, further comprising:
a scintillator layer at a side of the microlenses opposite from the photosensitive component,
wherein the scintillator layer is configured to convert the X-ray into visible light, and the photosensitive component is a photodiode.

5. The optical detection panel according to claim 3 , wherein the optical detection panel is a detection panel for detecting infrared light, further comprising:
interdigitated electrodes including a first interdigital electrode and a second interdigital electrode, wherein the interdigitated electrodes are disposed between the readout thin film transistor and the photosensitive component and the first interdigital electrode is connected to the readout thin film transistor.

6. The optical detection panel according to claim 5 , wherein the photosensitive component comprises:
an infrared sensitive layer,
wherein the infrared sensitive layer is configured to transduce the infrared light into the electrical signals.

7. The optical detection panel according to claim 6 , further comprising:
an organic insulating layer between the first interdigital electrode and the infrared sensitive layer and between the second interdigital electrode and the infrared sensitive layer.

8. The optical detection panel according to claim 3 , further comprising
an insulating dielectric oil having a first refractive index and the droplet having a second refractive index;
wherein the insulating dielectric oil is disposed between the first hydrophobic layer and the second hydrophobic layer, the second refractive index is greater than the first refractive index, and the insulating dielectric oil and the droplet form a curved interface.

9. The optical detection panel according to claim 8 , wherein the droplet comprises an ionic liquid or a polymeric solution.

10. The optical detection panel according to claim 1 , wherein a center of the photosensitive component is on an axis of one of the microlenses.

11. A display apparatus comprising the optical detection panel according to claim 1 .

Assignees

• Beijing Boe Display Tech Co
• Boe Technology Group Co Ltd
• Beijing Boe Technology Dev Co Ltd

Inventors

• Bu Qianqian
• Hu Weipin
• Wang Dan
• Qiu Yun
• Sun Xiao
• Wei Congcong

Classifications

• G01T1/2018 Primary

  Scintillation-photodiode combinations · CPC title

• H01L27/14669

  Electricity · mapped topic

• H01L31/02161

  Electricity · mapped topic

• H01L27/14685

  Electricity · mapped topic

• H01L27/14676

  Electricity · mapped topic