CN111766984B - In-cell touch screen and positioning function algorithm thereof - Google Patents

In-cell touch screen and positioning function algorithm thereof Download PDF

Info

Publication number
CN111766984B
CN111766984B CN202010077562.1A CN202010077562A CN111766984B CN 111766984 B CN111766984 B CN 111766984B CN 202010077562 A CN202010077562 A CN 202010077562A CN 111766984 B CN111766984 B CN 111766984B
Authority
CN
China
Prior art keywords
area
touch screen
sensor
scanning
sensor block
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202010077562.1A
Other languages
Chinese (zh)
Other versions
CN111766984A (en
Inventor
王春武
刘春玲
张桂杰
王立忠
孟昭晖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jilin Normal University
Original Assignee
Jilin Normal University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jilin Normal University filed Critical Jilin Normal University
Priority to CN202010077562.1A priority Critical patent/CN111766984B/en
Publication of CN111766984A publication Critical patent/CN111766984A/en
Application granted granted Critical
Publication of CN111766984B publication Critical patent/CN111766984B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • 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
    • 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
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention discloses an in-cell touch screen and a positioning function algorithm thereof, and the sampling rate is reduced because the XY axis coordinate type sensor adopted by the current touch panel is set, and the coordinates of a touch point are required to be scanned for multiple times when the coordinates of the touch point are determined. In order to solve the problem, the invention adopts a mode of dividing the area along the diagonal line, and meanwhile, the area of each sensor block is different, and the sensor block is divided into a plurality of different areas in parallel and equidistantly along the Y-axis direction to form a plurality of scanning channels; each sensor block is connected to the touch screen IC or the TDDI IC through wires respectively; when the touch screen is triggered, scanning connection channels of all the sensor blocks to determine the triggering sensor blocks; then scanning the area divided along the Y-axis direction; converted into an area according to the scanned charge amount, and then corresponds to a coordinate M in the diagonal direction according to the area (1～n) The method comprises the steps of carrying out a first treatment on the surface of the Knowing the oblique slope alpha of each sensor block, and finally determining the abscissa according to a trigonometric function formula.

Description

In-cell touch screen and positioning function algorithm thereof
Technical Field
The invention belongs to the technical field of in-cell display panel touch panels.
Background
With the increasing popularity of personal computers, new input modules have also grown. At present, a novel input mode, namely a principle and a structure of a touch panel, are proposed. Touch panel is a new input device that performs point location (pointing) by touching lightly with a finger or special pen tip on a display panel (display). The former is classified into a finger touch type and the latter is a pen tip touch type. The device has the advantage that the device can directly perform the contact point when the display is finished. Pen touch (Pen touch) is mostly used in occasions with high precision requirements, such as pictures or handwritten characters. And the finger touch type is the condition that the stroke precision is not high. Compared with Pen touch type (Pen touch), the finger touch type does not need to be provided with a special writing Pen, and can complete input by directly touching the display panel with fingers, so that the Pen touch type is closer to a natural handwriting input mode. Touch panel includes: electromagnetic induction type and electrostatic induction type. The finger touch panel includes: capacity, optical, acoustic, pressure detection, memberane (transparent conductive film), and the like.
Because the XY axis coordinate type sensor adopted by the current touch panel is arranged, multiple times of scanning are needed when the coordinates of the touch point are determined, and the sampling rate is reduced.
Disclosure of Invention
In order to solve the problems, the invention provides an in-cell touch screen and a positioning function algorithm thereof, wherein the touch screen is divided into a plurality of areas in parallel along the diagonal line of the touch screen, each area is divided into two sensor blocks along the diagonal line of the area, the diagonal lines of the areas are arranged in parallel, the area of each sensor block is different, and the sensor blocks are divided into a plurality of different areas in parallel and equidistantly along the Y-axis direction to form a plurality of scanning channels; each sensor block is connected to the touch screen IC or the IC of the TDDI by a wire, respectively.
The positioning function algorithm of the in-cell touch screen is specifically as follows:
1) When the touch screen is triggered, scanning connection channels of all the sensor blocks to determine the triggering sensor blocks; then scanning the area divided along the Y-axis direction;
2) Converted into an area according to the size of the scanned charge amount, and corresponds to the coordinate M in the diagonal direction according to the size of the area (1～n) ；
3) Knowing the oblique slope a of each sensor block, determining the abscissa (X, Y) from the trigonometric function formula,
X＝M (1～n) ×cosα,Y＝M (1～n) x sin alpha. The angle α may be adjusted according to parameters such as the product size and the IC specification.
The invention has the beneficial effects that:
the invention discloses a method for determining touch areas through different sensor blocks, and then calculating different touch areas according to the principle of charge variation caused by different contact areas, so as to determine the inclined line position of a specific touch area. The X and Y coordinate values of the sensor block are calculated by a specific function. The invention can complete the calculation of the touch position by only one scanning, reduces the scanning times and improves the sampling rate.
Drawings
FIG. 1 is a schematic diagram of the distribution of sensor blocks on a panel;
FIG. 2 is a flow chart of an optimized scanning process.
FIG. 3M determination of touch point coordinates.
Fig. 4M is an assignment diagram of coordinates.
Fig. 5M coordinates.
Detailed Description
In this embodiment, an in-cell touch screen belongs to a capacitive screen, and the touch screen divides a plurality of areas in parallel along a diagonal line of the touch screen, wherein the number of the divided areas is different according to the size and the characteristics of the products. For example, the product in this embodiment is 36 columns and 18 rows, and thus the corresponding number of areas is 36×18=648.
Each area is divided into two sensor blocks along the diagonal line of the area, each sensor block corresponds to one capacitor, the diagonal lines of the areas are arranged in parallel, the areas of the sensor blocks are different, and the sensor blocks are divided into a plurality of different areas in parallel and equidistantly along the Y-axis direction; each sensor block is connected to the touch screen IC or the IC of the TDDI by a wire, respectively.
As shown in fig. 3, M is a touch area in the drawing, and when M is pressed, the charge amounts of Q1 to Q8 in fig. 4 and 5 are changed.
The positioning function algorithm of the in-cell touch screen is specifically as follows:
1) When the touch screen is triggered, scanning connection channels of all the sensor blocks to determine the triggering sensor blocks; the M1 through M8 regions are then used to scan the charge levels of Q1-Q8, respectively.
The direction of the scanning operation can be determined by a programmer according to the size of the scanning data and the resource usage. For example: the two rows can be downward one by one from two sides to the middle by adopting left to right and right to left.
2) Converted into an area according to the size of the scanned charge amount, and corresponds to the coordinate M in the diagonal direction according to the size of the area (1～n) N represents the corresponding regions of M1 to M8;
3) Knowing the oblique slope a of each sensor block, determining the abscissa (X, Y) from the trigonometric function formula,
X＝M (1～n) ×cosα,Y＝M (1～n) x sin alpha. The angle α may be adjusted according to parameters such as the product size and the IC specification.

Claims (1)

1. An in-cell touch screen is characterized in that the touch screen is divided into a plurality of areas in parallel along the diagonal line of the touch screen, each area is divided into two sensor blocks along the diagonal line of the area, the diagonal lines of the areas are arranged in parallel, the area of each sensor block is different, and the sensor blocks are divided into n different areas in parallel and equidistantly along the Y-axis direction to form a plurality of scanning channels; each sensor block is connected to the touch screen IC or the TDDI IC through wires respectively;
the positioning function algorithm of the in-cell touch screen comprises the following specific steps:
1) When the touch screen is triggered, scanning connection channels of all the sensor blocks to determine the triggering sensor blocks; then scanning the area divided along the Y-axis direction;
2) Converted into an area according to the size of the scanned charge amount, and corresponds to the coordinate M in the diagonal direction according to the size of the area (1～n) ；
3) Knowing the oblique slope a of each sensor block, determining the abscissa (X, Y) from the trigonometric function formula,
X＝M (1～n) ×cosα,Y＝M (1～n) ×sinα。
CN202010077562.1A 2020-01-30 2020-01-30 In-cell touch screen and positioning function algorithm thereof Active CN111766984B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010077562.1A CN111766984B (en) 2020-01-30 2020-01-30 In-cell touch screen and positioning function algorithm thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010077562.1A CN111766984B (en) 2020-01-30 2020-01-30 In-cell touch screen and positioning function algorithm thereof

Publications (2)

Publication Number Publication Date
CN111766984A CN111766984A (en) 2020-10-13
CN111766984B true CN111766984B (en) 2023-08-22

Family

ID=72718307

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010077562.1A Active CN111766984B (en) 2020-01-30 2020-01-30 In-cell touch screen and positioning function algorithm thereof

Country Status (1)

Country Link
CN (1) CN111766984B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100137034A (en) * 2009-06-20 2010-12-30 위순임 Touchscreen device
CN102073427A (en) * 2011-01-04 2011-05-25 苏州瀚瑞微电子有限公司 Multi-finger detection method of capacitive touch screen
KR20130028360A (en) * 2011-09-09 2013-03-19 엘지디스플레이 주식회사 Apparatus and method for driving touch screen
CN106095180A (en) * 2016-06-15 2016-11-09 湖州佳格电子科技股份有限公司 A kind of touch screen scanning method
CN107168596A (en) * 2017-07-25 2017-09-15 业成科技（成都）有限公司 The scan method and capacitive touch screen of capacitive touch screen
CN108415629A (en) * 2017-02-09 2018-08-17 晶门科技（中国）有限公司 A kind of device and its manufacturing method combining capacitance touching control sensor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014191660A (en) * 2013-03-27 2014-10-06 Japan Display Inc Display device with touch detection function and electronic apparatus
TWI517016B (en) * 2014-04-25 2016-01-11 晨星半導體股份有限公司 Method and touch apparatus for calibrating coordinate value near edge of touch sensitive panel

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100137034A (en) * 2009-06-20 2010-12-30 위순임 Touchscreen device
CN102073427A (en) * 2011-01-04 2011-05-25 苏州瀚瑞微电子有限公司 Multi-finger detection method of capacitive touch screen
KR20130028360A (en) * 2011-09-09 2013-03-19 엘지디스플레이 주식회사 Apparatus and method for driving touch screen
CN106095180A (en) * 2016-06-15 2016-11-09 湖州佳格电子科技股份有限公司 A kind of touch screen scanning method
CN108415629A (en) * 2017-02-09 2018-08-17 晶门科技（中国）有限公司 A kind of device and its manufacturing method combining capacitance touching control sensor
CN107168596A (en) * 2017-07-25 2017-09-15 业成科技（成都）有限公司 The scan method and capacitive touch screen of capacitive touch screen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
基于ARM内核处理器及SX8644芯片的触摸屏控制器的设计及其应用;郑高辉;;家电科技(第04期);全文 *

Also Published As

Publication number Publication date
CN111766984A (en) 2020-10-13

Similar Documents

Publication Publication Date Title
TWI496041B (en) Two-dimensional touch sensors
US10430066B2 (en) Gesteme (gesture primitive) recognition for advanced touch user interfaces
US9430107B2 (en) Determining touch locations and forces thereto on a touch and force sensing surface
US7932896B2 (en) Techniques for reducing jitter for taps
US20050052427A1 (en) Hand gesture interaction with touch surface
US20090128516A1 (en) Multi-point detection on a single-point detection digitizer
US9182865B2 (en) Touch screen and touch panel including mutual capacitance type and self-capacitance type pixels, and driving method thereof
JP5894957B2 (en) Electronic device, control method of electronic device
US11137840B1 (en) Stylus pen, touch-sensing system, touch-sensing controller, and touch-sensing method
CN105677130A (en) Pressure sensing touch control method, pressure sensing touch control device and pressure sensing type touch screen
CN1673939A (en) Inputtig method, control module and product with starting location and moving direction as definition
CN1942853A (en) Multipoint touchscreen
TWI489331B (en) Touch point coordinate detection method
TW201113770A (en) Touch device
US9507470B2 (en) Method and system for reduced power touch input detection on an electronic device using reduced scanning
CN103329083B (en) For the method for operation matrix touch-screen
CN101533322A (en) Multi-point touch plate and multi-point touch positioning method
US9977546B2 (en) Determining finger separation through groove analysis in a touch screen device
CN103218096A (en) Touch detection method for bendable projected capacitive touch panel
US10228798B2 (en) Detecting method of touch system for avoiding inadvertent touch
CN111766984B (en) In-cell touch screen and positioning function algorithm thereof
CN102830824B (en) A kind of soft analogue system and soft emulation mode
US20180188878A1 (en) Use of groove analysis in a touch screen device to determine occurrence of an elongated touch by a single finger
TWM241746U (en) Touch-controlled input apparatus of electronic apparatus
CN113296616A (en) Pen point selection method and device and intelligent terminal

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant