CN114840100A - OLED touch display module integrated with pressure sensor - Google Patents
OLED touch display module integrated with pressure sensor Download PDFInfo
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- CN114840100A CN114840100A CN202210342455.6A CN202210342455A CN114840100A CN 114840100 A CN114840100 A CN 114840100A CN 202210342455 A CN202210342455 A CN 202210342455A CN 114840100 A CN114840100 A CN 114840100A
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- conductive electrode
- pressure
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- 239000002033 PVDF binder Substances 0.000 claims abstract description 8
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims abstract description 7
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 5
- 229910002113 barium titanate Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002121 nanofiber Substances 0.000 claims description 2
- 229920002620 polyvinyl fluoride Polymers 0.000 claims description 2
- 230000003247 decreasing effect Effects 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 19
- 239000010408 film Substances 0.000 description 12
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000003321 amplification Effects 0.000 description 2
- 230000008034 disappearance Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
- A63F13/20—Input arrangements for video game devices
- A63F13/21—Input arrangements for video game devices characterised by their sensors, purposes or types
- A63F13/218—Input arrangements for video game devices characterised by their sensors, purposes or types using pressure sensors, e.g. generating a signal proportional to the pressure applied by the player
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
- A63F13/20—Input arrangements for video game devices
- A63F13/24—Constructional details thereof, e.g. game controllers with detachable joystick handles
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F13/00—Video games, i.e. games using an electronically generated display having two or more dimensions
- A63F13/25—Output arrangements for video game devices
- A63F13/28—Output arrangements for video game devices responding to control signals received from the game device for affecting ambient conditions, e.g. for vibrating players' seats, activating scent dispensers or affecting temperature or light
- A63F13/285—Generating tactile feedback signals via the game input device, e.g. force feedback
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
- G06F3/04142—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position the force sensing means being located peripherally, e.g. disposed at the corners or at the side of a touch sensing plate
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
- G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Human Computer Interaction (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Push-Button Switches (AREA)
- Electronic Switches (AREA)
Abstract
The invention provides an OLED touch display module integrated with a pressure sensor, which comprises a touch chip and the pressure sensor in a screen; the pressure sensor in the screen is arranged in the side edge area of the OLED panel, the three-layer structure is formed by an outer layer conductive electrode, a piezoelectric film PVDF and an inner layer conductive electrode from outside to inside in sequence, the outer layer conductive electrode and the inner layer conductive electrode are connected with the touch chip TIC through metal wiring, and side pressure touch is achieved. The invention can realize the integrated pressure-sensitive touch control and side pressure-sensitive touch control in the screen; the side pressure touch belongs to 3D touch, can equivalently replace physical keys on the side of a mobile phone, such as power supply, volume increase and decrease, game left and right control and the like, cannot have the defects of mistaken touch and the like, and can also perform pressure touch feedback in application situations such as games and the like.
Description
Technical Field
The invention relates to a mobile phone OLED display technology, in particular to a full screen design technology of an integrated proximity type induction device in a screen.
Background
With the rising of the flexible OLED technology, the appearance of the mobile phone is developed in the directions of ultra-thinning, full-screen and 3D (three-dimensional) screen, the number of physical keys is reduced, and the disappearance of the number keys and the disappearance of the Home key are replaced by the touch technology. The problem that the space for arranging the side physical keys is insufficient is increasingly highlighted when the area of the covered edge of the 3D screen is larger and the thickness of the mobile phone is further reduced.
As shown in fig. 1, in the current solution, capacitive touch utilizes an edge area outside a bending line of a touch panel as a side touch area, which is used as a virtual key, that is, a picture displays the virtual key through a certain wake-up mode (such as lightly touching for 2 times), and then the operation is performed through a touch screen.
Disclosure of Invention
The invention aims to solve the technical problem of providing a full-screen touch display module of an integrated proximity sensor in a screen, which is not easy to operate by mistake.
The invention adopts the technical scheme that the OLED touch display module integrated with the pressure sensor is characterized by comprising a touch chip and a pressure sensor in a screen;
the pressure sensor in the screen is arranged in the side edge area of the OLED panel, the three-layer structure is formed by an outer layer conductive electrode, a piezoelectric film PVDF and an inner layer conductive electrode from outside to inside in sequence, the outer layer conductive electrode and the inner layer conductive electrode are connected with the touch chip TIC through metal wiring, and side pressure touch is achieved.
Specifically, the side pressure touch is used as a Power key and a volume key for regulating and controlling the mobile phone.
More specifically, the number of the in-screen pressure sensors is 5, and the in-screen pressure sensors are respectively arranged in 5 areas on the side edge of the OLED panel; the 5 on-screen pressure sensors are respectively used as a Power key Power, a volume plus VOL +, a volume minus VOL-, a game left key L and a game right key R.
The invention has the beneficial technical effects that the integrated pressure-sensitive touch control and the side pressure-sensitive touch control in the screen can be realized; the side pressure touch belongs to 3D touch, can equivalently replace physical keys on the side of a mobile phone, such as a power supply, volume plus minus, L/R and the like, does not have the defects of mistaken touch and the like, and can also perform pressure touch feedback when certain application scenes, such as games and the like, are performed.
Drawings
FIG. 1 is a schematic diagram of a conventional OLED side capacitive touch display module;
FIG. 2 is a schematic view of an OLED touch display module integrated with a pressure sensor according to the present invention;
FIG. 3 is a schematic diagram of the piezoelectric properties of a piezoelectric film;
fig. 4 is a schematic diagram of an embodiment.
Detailed Description
The structure schematic diagram of the invention is shown in fig. 2, the OLED touch display module integrated with the pressure sensor comprises a touch chip TIC and an on-screen pressure sensor;
the on-screen pressure sensor is arranged in the side Area of the OLED panel PNL, outside an AA Area (Active Area or visual Area), 2 areas on the left side are respectively used for adding VOL and reducing VOL-; the upper and lower 2 areas on the right side are respectively used as a game left key L and a game right key R, and the 1 area on the right side is used as a Power key Power;
The pressure sensor in the screen sequentially comprises an outer layer conductive electrode TMA (Touch Metal a layer), a piezoelectric film PVDF (polyvinylidene fluoride) and an inner layer conductive electrode TMB (Touch Metal B layer) from outside to inside to form a three-layer structure, wherein the outer layer conductive electrode and the inner layer conductive electrode are connected with a Touch chip TIC on a main Flexible circuit board MFPC (Main Flexible Printed Circuit) through Metal wiring;
the in-screen pressure sensor is shown in a section a 'a in fig. 2 in the specification, and the section a' a is sequentially provided with an OC, an outer conductive electrode TMB, a piezoelectric film PVDF, an inner conductive electrode TMA, a film encapsulation TFE, and a base layer Substrate from outside to inside.
The specific process steps for manufacturing the OLED touch display module integrated with the pressure sensor are as follows:
the first step is as follows: after the TFE process is completed in the OLED PNL, when a Flexible Multi-Layer touch FMLOC (Flexible Multi-Layer On Cell) process is performed, an outer Layer conductive electrode of a piezoelectric film can be synchronously manufactured by using a TMA Layer in the FMLOC, and the manufacturing position is in a side frame region of the PNL;
the second step is that: manufacturing a piezoelectric film, namely Coating the piezoelectric film on an outer layer electrode by using a special pattern screen printing plate, and drying; the material of the piezoelectric film includes at least one of: piezoelectric materials such as polyvinylidene fluoride, polyvinyl fluoride, zinc oxide ZnO nanowires, barium titanate BaTiO3 nanofibers and the like;
The third step: when TMB process of FMLOC is carried out, an inner layer conductive electrode of the piezoelectric film is synchronously manufactured by utilizing the TMB layer;
the fourth step: and manufacturing an OC protective layer.
Piezoelectric thin film materials arranged in the screen can sense different pressures and output charges varying with the pressures, and piezoelectric induction can be realized based on the characteristics, as shown in fig. 3. The different thickness and area of the piezoelectric film and the different doped substances lead to different piezoelectric curves, and fig. 3 is only an example, which shows that the piezoelectric film has perfect piezoelectric characteristics.
Operation of the touch chip TIC:
1) after the TIC receives the charge signal from the PVDF, the charge signal is converted into a voltage signal through an amplifier in the TIC;
2) the voltage signal is a digital signal which can be processed by a mobile phone system AP through an internal analog-to-digital conversion ADC;
3) the AP can judge the pressure according to the digital signal, and further control and adjust corresponding functions;
the TIC reserves redundant Force Touch pins for connecting the pressure sensor, an additional processing chip IC is not needed, and the TIC has a charge amplification function and converts the charge amplification function into a voltage signal, the voltage signal is converted into a digital signal through an internal ADC (analog to digital converter), and the digital signal is transmitted to a terminal.
As shown in fig. 4, according to product requirements, for example, common power keys, volume + and volume-keys are arranged on both sides of the screen, or because there is no other Pattern or device obstacle in the edge portion region, a plurality of pressure sensors may be used as game L & R keys or virtual keys for implementing other edge Touch functions Force Touch, and a plurality of patterns may be used as game L & R keys or virtual keys for implementing other edge Touch functions.
Claims (3)
1. The OLED touch display module is characterized by comprising a touch chip and an in-screen pressure sensor;
the pressure sensor in the screen is arranged in the side edge area of the OLED panel, the three-layer structure is formed by an outer layer conductive electrode, a piezoelectric film PVDF and an inner layer conductive electrode from outside to inside in sequence, the outer layer conductive electrode and the inner layer conductive electrode are connected with the touch chip TIC through metal wiring, and side pressure touch is achieved.
2. The pressure sensor-integrated OLED touch display module of claim 1, wherein the number of the on-screen pressure sensors is 5, and the pressure sensors are respectively disposed in 5 regions on the side of the OLED panel; the 5 on-screen pressure sensors are respectively used as a power key, a volume increasing key, a volume decreasing key, a game left control key and a game right control key.
3. The pressure sensor-integrated OLED touch display module of claim 1, wherein the material of the piezoelectric film comprises at least one of: polyvinylidene fluoride, polyvinyl fluoride, zinc oxide nano-wires and barium titanate BaTiO3 nano-fibers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342455.6A CN114840100A (en) | 2022-03-31 | 2022-03-31 | OLED touch display module integrated with pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210342455.6A CN114840100A (en) | 2022-03-31 | 2022-03-31 | OLED touch display module integrated with pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114840100A true CN114840100A (en) | 2022-08-02 |
Family
ID=82564424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210342455.6A Pending CN114840100A (en) | 2022-03-31 | 2022-03-31 | OLED touch display module integrated with pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114840100A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881193A (en) * | 2015-06-02 | 2015-09-02 | 南昌欧菲光科技有限公司 | Touch display device, pressure touch unit and manufacturing method of pressure touch unit |
| CN105224126A (en) * | 2015-09-17 | 2016-01-06 | 京东方科技集团股份有限公司 | Touch-screen and pressure touch detection method thereof |
| JP2016129933A (en) * | 2015-01-13 | 2016-07-21 | 独立行政法人 国立印刷局 | Wiping device including vibration mechanism using ultrasonic wave and ultrasonic wave control method |
| CN106468979A (en) * | 2015-08-20 | 2017-03-01 | 南昌欧菲光科技有限公司 | Touch screen and touch-control display module |
| CN206489535U (en) * | 2016-10-08 | 2017-09-12 | 南昌欧菲光科技有限公司 | Touch display unit |
| CN112905048A (en) * | 2021-02-07 | 2021-06-04 | 京东方科技集团股份有限公司 | Touch display screen and display device |
| CN113206897A (en) * | 2020-01-30 | 2021-08-03 | 华一声学股份有限公司 | Patterned thin film piezoelectric component and electronic device thereof |
| WO2021243546A1 (en) * | 2020-06-02 | 2021-12-09 | 晶极光电科技股份有限公司 | Method for manufacturing multi-hole pressure sensor, and multi-hole pressure sensor |
-
2022
- 2022-03-31 CN CN202210342455.6A patent/CN114840100A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016129933A (en) * | 2015-01-13 | 2016-07-21 | 独立行政法人 国立印刷局 | Wiping device including vibration mechanism using ultrasonic wave and ultrasonic wave control method |
| CN104881193A (en) * | 2015-06-02 | 2015-09-02 | 南昌欧菲光科技有限公司 | Touch display device, pressure touch unit and manufacturing method of pressure touch unit |
| CN106468979A (en) * | 2015-08-20 | 2017-03-01 | 南昌欧菲光科技有限公司 | Touch screen and touch-control display module |
| CN105224126A (en) * | 2015-09-17 | 2016-01-06 | 京东方科技集团股份有限公司 | Touch-screen and pressure touch detection method thereof |
| CN206489535U (en) * | 2016-10-08 | 2017-09-12 | 南昌欧菲光科技有限公司 | Touch display unit |
| CN113206897A (en) * | 2020-01-30 | 2021-08-03 | 华一声学股份有限公司 | Patterned thin film piezoelectric component and electronic device thereof |
| WO2021243546A1 (en) * | 2020-06-02 | 2021-12-09 | 晶极光电科技股份有限公司 | Method for manufacturing multi-hole pressure sensor, and multi-hole pressure sensor |
| CN112905048A (en) * | 2021-02-07 | 2021-06-04 | 京东方科技集团股份有限公司 | Touch display screen and display device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20220802 |