IP Library Granted Patent US 11,481,055
Granted Patent B2
US 11,481,055 · App. 16/976,684 · Granted Oct 25, 2022

Integrating pressure sensitive sensors with light emitting picture elements

Inventor: Themistoklis Afentakis (Camas, WA)
Assignee: Peratech Holdco Ltd
G06F3/0412G06F3/045G06F3/04144H01L27/156H01L27/323H01L27/3244H01L51/5284
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Quick Facts
Patent No.
US 11,481,055
App. No.
16/976,684
Granted
Oct 25, 2022
Kind
B2
Abstract

Pressure sensitive sensors are integrated with light emitting picture elements ( 111 to 120 ). Light-emitting picture elements ( 111 to 120 ) are arranged upon a substrate ( 151 ), such that located light-emitting picture elements are surrounded by a black matrix ( 122 ) of non-light-emitting regions. A sensor matrix of pressure sensitive sensor elements ( 131 to 139 ) is located at regions of the black matrix, such that sensor elements are aligned at positions over the black matrix and do not occlude the light-emitting picture elements.

Claims (42)

1. An apparatus having integrated display devices and touch-sensing devices, comprising:

light-emitting picture elements surrounded by a black matrix of non-light-emitting regions; and

pressure sensitive resistive sensor elements arranged in a sensor matrix and electrically connected by conductive film rows and columns,

wherein:

said sensor matrix is located over said black matrix; and

said sensor elements and said conductive film rows and columns between said sensor elements are aligned at positions over said black matrix, such that said sensor elements do not occlude said light-emitting picture elements; and

said light-emitting picture elements within said black matrix have a first integer number;

said sensor matrix has a second integer number; and

said second integer number is lower than said first integer number.

2. The apparatus of claim 1 , wherein said first integer number is substantially ten times larger than that of the second integer number.

3. The apparatus of claim 1 , wherein said integer number of light-emitting picture elements in a two- dimensional array are associated with each individual sensor element.

4. The apparatus of claim 1 , wherein said light-emitting picture elements are of a type selected from any one of the following:

electrophoretic devices;

liquid crystal devices;

organic light emitting diode devices and

micro light emitting diode devices.

5. The apparatus of claim 1 , wherein each light-emitting picture element is configured to emit light of a particular color selected from a set of available colors.

6. The apparatus of claim 5 , wherein examples of said available colors are included in each of a plurality of unit cells within said black matrix.

7. The apparatus of claim 6 , wherein each sensor element is associated with a plurality of said unit cells.

8. The apparatus of claim 1 , wherein said resistive sensor elements comprise:

a first plurality of finger elements;

a second plurality of finger elements, wherein said second plurality of finger elements are interdigitated with said first plurality of finger elements; and

a force sensitive film overlaying said interdigitated finger elements.

9. A method of integrating pressure sensitive sensors with light-emitting picture elements, comprising the steps of:

arranging light-emitting picture elements upon a substrate, such that located light-emitting picture elements are surrounded by a black matrix of non-light-emitting regions,

arranging said light-emitting picture elements to have a first integer number;

locating a sensor matrix of pressure sensitive resistive sensor elements electrically connected by conductive film rows and columns over said black matrix, such that said sensor elements are aligned at positions of said black matrix and do not occlude said picture elements; and

arranging said sensor matrix to have a second integer number, wherein said second integer number is lower than said first integer number.

10. The method of claim 9 , further comprising the step of locating said sensor elements over said positions of said black-matrix.

11. The method of claim 9 , further comprising the step of placing a transparent sheet over said sensor matrix.

12. A touch-screen including a processor for powering light-emitting picture elements and energizing pressure sensitive sensor elements, wherein:

manual interaction is received upon a top transparent surface and light-emitting picture elements are supported by an opaque substrate;

said light-emitting picture elements are surrounded by a black matrix defining portions that do not emit light;

said pressure sensitive resistive sensor elements are arranged in a sensor matrix and electrically connected by conductive film rows and columns, wherein said sensor matrix has a first integer number lower than a second integer number of said light-emitting picture elements; and

said sensor elements and said conductive film rows and columns between said sensor elements are aligned at positions above said black matrix, such that components of said sensor matrix do not occlude said light-emitting picture elements.

13. The touch-screen of claim 12 , wherein said first integer number is substantially ten times larger than that of the second integer number.

14. The touch screen of claim 12 , wherein an integer number of light-emitting picture elements in a two- dimensional array are associated with each individual sensor element.

15. The touch screen of claim 12 , wherein said light-emitting picture elements are of a type selected from any one of the following:

electrophoretic devices;

liquid crystal devices;

organic light emitting diode devices and

micro light emitting diode devices.

Assignments (4)
LIEN Recorded Oct 28, 2024
From: PERATECH IP LTD.; PERATECH HOLDCO LTD.
To: DARK MATTER LEND CO LTD.
Reel/Frame 069272/0745 →
LICENSE Recorded Oct 28, 2024
From: PERATECH IP LTD.
To: PERATECH HOLDCO LTD.
Reel/Frame 069444/0115 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 5, 2024
From: PERATECH HOLDCO LTD.
To: PERATECH IP LTD
Reel/Frame 068840/0351 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 28, 2020
From: AFENTAKIS, THEMISTOKLIS
To: PERATECH HOLDCO LTD
Reel/Frame 053631/0959 →
Priority Claims (1)
GB 1814819 · Sep 12, 2018 · national
Continuity (2)
Provisional Application 62646501 · Mar 22, 2018
Related Publication 20210004105A1 · Jan 7, 2021