Optical Touch Screen

Abstract: A touch sensitive apparatus comprises: a top plate comprising a plurality of touch detection regions, and having one or more light sources associated therewith, such that light from the one or more light sources is transmitted within the top plate with total internal reflection; a plurality of detectors for detecting light from the one or more light sources, wherein each detector is associated with a touch detection region; wherein the top plate and the detectors are arranged such that if an external body touches a first surface of the top plate in a touch detection region, then light is coupled from a second surface of the top plate to the associated detector(s); the touch sensitive apparatus further comprising processing means to determine at least the presence or absence of a touch in any of the touch detection regions of the top plate.

Patent Information

Application #

Filing Date

19 July 2023

Publication Number

48/2023

Publication Type

INA

Invention Field

COMPUTER SCIENCE

Status

Email

Parent Application

Applicants

UNIPHY LIMITED

Nexus Discovery Way Leeds LS2 3AA

Inventors

1. LOMAS, David

10 Ebor Close Swindon Wiltshire SN25 2FQ

2. BEAN, Michael David

6 St Leonard's Avenue Windsor Berkshire SL4 1HX

3. MACALISTER, Iain

Park Farm Studios Park Farm, Beverston Tetbury GL8 8TT

4. NICHOLAS, Jim Edward

Flat 6, 1 & 2 Lansdown Place Clifton Village Bristol BS8 3AE

Specification

Documents

Application Documents

#	Name	Date
1	202317048246-STATEMENT OF UNDERTAKING (FORM 3) [19-07-2023(online)].pdf	2023-07-19
2	202317048246-PRIORITY DOCUMENTS [19-07-2023(online)].pdf	2023-07-19
3	202317048246-POWER OF AUTHORITY [19-07-2023(online)].pdf	2023-07-19
4	202317048246-NOTIFICATION OF INT. APPLN. NO. & FILING DATE (PCT-RO-105-PCT Pamphlet) [19-07-2023(online)].pdf	2023-07-19
5	202317048246-FORM 1 [19-07-2023(online)].pdf	2023-07-19
6	202317048246-DRAWINGS [19-07-2023(online)].pdf	2023-07-19
7	202317048246-DECLARATION OF INVENTORSHIP (FORM 5) [19-07-2023(online)].pdf	2023-07-19
8	202317048246-COMPLETE SPECIFICATION [19-07-2023(online)].pdf	2023-07-19
9	202317048246-FORM 3 [19-01-2024(online)].pdf	2024-01-19
10	202317048246-Proof of Right [22-01-2024(online)].pdf	2024-01-22
11	202317048246-FORM 18 [06-11-2024(online)].pdf	2024-11-06