CN110109571B - Embedded touch display structure - Google Patents
Embedded touch display structure Download PDFInfo
- Publication number
- CN110109571B CN110109571B CN201910388385.6A CN201910388385A CN110109571B CN 110109571 B CN110109571 B CN 110109571B CN 201910388385 A CN201910388385 A CN 201910388385A CN 110109571 B CN110109571 B CN 110109571B
- Authority
- CN
- China
- Prior art keywords
- panel body
- terminal area
- touch sensing
- wiring
- panel
- 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.)
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Links
- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims description 3
- 229910003437 indium oxide Inorganic materials 0.000 claims 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical group [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 11
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 238000004377 microelectronic Methods 0.000 abstract description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical group [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 4
- 239000013589 supplement Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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
-
- 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
Abstract
The invention relates to the technical field of microelectronics, in particular to an embedded touch display structure, which comprises a first wiring, more than two capacitors and more than two transistors, wherein the transistors are arranged to realize a switching function, the compensation time for a touch sensing electrode is controlled, and the capacitors are arranged to maintain voltage during panel display, so that the influence on the touch function of a panel is avoided; the embedded touch display structure of this scheme design can effectively improve the cross grain problem of panel to the display effect of reinforcing panel.
Description
Technical Field
The present invention relates to the field of microelectronics technologies, and in particular, to an embedded touch display structure.
Background
The medium and small sized screens are generally classified into an Out-Cell type (Out-Cell) and an In-Cell type (In-Cell). The Out-Cell panel only supports the display function and does not support the touch function, and if the touch function is needed, a touch film is needed to be added on the panel; the In-Cell panel not only supports the display function, but also can realize the touch control function. Therefore, if the display and touch functions are to be simultaneously realized, the In-Cell panel can be thinner and thinner than the Out-Cell panel and has good transmittance.
One method for realizing In-Cell is to divide the COM electrode, then use the divided COM electrode (also called co-electrode plate electrode) as a sensor of a touch panel, and then independently drive each COM electrode by using an IC chip, if COM is coupled greatly, uniform transverse lines appear from the opposite terminal portion to the terminal portion of the panel, so as to affect the display effect of the panel.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: an in-cell touch display structure is provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
the embedded touch display structure comprises a panel body and an IC chip, wherein the IC chip is arranged on one side of the panel body, the panel body comprises a terminal area and an opposite terminal area, more than two touch sensing electrodes are arranged in the terminal area and the opposite terminal area, each touch sensing electrode is correspondingly connected with one sensing wire, each touch sensing electrode is connected with the IC chip through one corresponding sensing wire, and the embedded touch display structure further comprises a first wire, more than two capacitors and more than two transistors;
one end of each capacitor is connected with one touch sensing electrode of the corresponding opposite terminal area and one corresponding source electrode of the transistor respectively through one corresponding second wiring, the other end of each capacitor is grounded, the drain electrode of each transistor is connected with the first wiring, and the grid electrodes of more than two transistors are sequentially connected.
The invention has the beneficial effects that:
the transistor is arranged to realize the switching function, the compensation time of the touch sensing electrode is controlled, the capacitor is arranged to maintain voltage during the display period of the panel, so that the influence on the touch function of the panel is avoided, and the first wiring is arranged to additionally supplement charge to the COM electrode during the display period, so that transverse lines caused by insufficient charge are improved; the embedded touch display structure of this scheme design can effectively improve the cross grain problem of panel to the display effect of reinforcing panel.
Drawings
FIG. 1 is a schematic diagram of an in-cell touch display structure according to the present invention;
FIG. 2 is a schematic diagram showing the structure of the opposite terminal area of an in-cell touch display structure according to the present invention;
description of the reference numerals:
1. a panel body; 2. an IC chip; 3. a touch sensing electrode; 4. a sensing trace; 5. and a first wiring.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The most critical concept of the invention is as follows: the compensation of the touch sensing electrodes is realized by correspondingly connecting a second wiring on each touch sensing electrode in the opposite terminal area, and correspondingly connecting a capacitor and a transistor respectively by the second wiring.
Referring to fig. 1 and 2, the present invention provides the following technical solutions:
the embedded touch display structure comprises a panel body and an IC chip, wherein the IC chip is arranged on one side of the panel body, the panel body comprises a terminal area and an opposite terminal area, more than two touch sensing electrodes are arranged in the terminal area and the opposite terminal area, each touch sensing electrode is correspondingly connected with one sensing wire, and each touch sensing electrode is connected with the IC chip through one corresponding sensing wire;
one end of each capacitor is connected with one touch sensing electrode of the corresponding opposite terminal area and one corresponding source electrode of the transistor respectively through one corresponding second wiring, the other end of each capacitor is grounded, the drain electrode of each transistor is connected with the first wiring, and the grid electrodes of more than two transistors are sequentially connected.
From the above description, the beneficial effects of the invention are as follows:
the transistor is arranged to realize the switching function, the compensation time of the touch sensing electrode is controlled, the capacitor is arranged to maintain voltage during the display period of the panel, so that the influence on the touch function of the panel is avoided, and the first wiring is arranged to additionally supplement charge to the COM electrode during the display period, so that transverse lines caused by insufficient charge are improved; the embedded touch display structure of this scheme design can effectively improve the cross grain problem of panel to the display effect of reinforcing panel.
Further, the first wiring is arranged outside the panel body and surrounds the panel body.
Further, the capacitor and the transistor are disposed outside the panel body and on opposite sides of the longitudinal axis of the panel body.
As can be seen from the above description, the capacitor and the transistor are disposed outside the panel body, so that the display function of the panel body can be prevented from being affected.
Further, the capacitor and the transistor are located between the panel body and the first trace.
Further, the terminal area and the opposite terminal area are arranged in an array manner.
From the above description, the touch sensing electrodes are arranged in an array, so that the limited display space of the panel can be reasonably utilized, and the compensation effect is better, thereby obtaining a better display effect.
Further, the first wiring and the second wiring are both reference voltage wirings.
As can be seen from the above description, the first trace and the second trace are both reference voltage traces, so that the capacitor and the transistor can be connected to the reference voltage signal, and the effect of improving the cross-talk is achieved.
Further, the touch sensing electrode is a transparent common electrode.
As can be seen from the above description, the touch sensing electrode is a transparent common electrode, so as to improve the display effect of the panel.
Further, the material of the touch sensing electrode is indium tin oxide.
As is apparent from the above description, indium tin oxide is a semiconductor transparent conductive film having excellent conductivity and transparency, and can be more useful for display of a panel due to high light transmittance of indium tin oxide.
Referring to fig. 1 and 2, a first embodiment of the invention is as follows:
the embedded touch display structure comprises a panel body 1 and an IC chip 2, wherein the IC chip 2 is arranged on one side of the panel body 1, the panel body 1 comprises a terminal area and a counter terminal area, the terminal area and the counter terminal area are respectively provided with more than two touch sensing electrodes 3, each touch sensing electrode 3 is correspondingly connected with one sensing wire 4, and each touch sensing electrode 3 is connected with the IC chip 2 through one corresponding sensing wire 4 and further comprises a first wire 5, more than two capacitors and more than two transistors;
each touch sensing electrode 3 in the opposite terminal area is correspondingly connected with a second wiring, one end of each capacitor is respectively connected with one touch sensing electrode 3 in the corresponding opposite terminal area and the source electrode of the corresponding transistor through the corresponding second wiring, the other end of each capacitor is grounded, the drain electrode of each transistor is connected with the first wiring 5, and the grid electrodes of more than two transistors are sequentially connected.
The first wires 5 are arranged outside the panel body 1 and surround the panel body 1.
The capacitor and the transistor are arranged outside the panel body 1 and on opposite sides of the longitudinal axis direction of the panel body 1.
The capacitor and transistor are located between the panel body 1 and the first track 5.
More than two touch sensing electrodes 3 of the terminal area and the opposite terminal area are arranged in an array mode.
The first wiring 5 and the second wiring are both reference voltage wirings.
The touch sensing electrode 3 is a transparent common electrode.
The material of the touch sensing electrode 3 is indium tin oxide.
In conventional designs, the sensing trace length increases gradually from the terminal area to the opposite terminal area, and as the sensing trace grows, its rc load increases, with the rc delay being more severe. In the same time, when the COM electrode is coupled to the data line and the walk haltingly line, the more the COM electrode is close to the opposite terminal area, the less the charge is replenished by the COM electrode, so that the touch panel cross stripe phenomenon is easy to occur.
Assuming that the number of transistors is a (i.e., T1-Ta), the number of capacitors is a (i.e., C1-Ca);
the a (0 is less than or equal to a is less than or equal to m×n) touch sensing electrodes 3 can be connected, m×n represents dividing the COM electrode into m×n blocks (M is a row, N is a column), so that m×n touch sensing electrodes 3 can be provided, the touch sensing electrodes 3 have M-1 horizontal stripes (also called slits, horizontal stripes seen by human eyes when the charging is insufficient, english represents gaps), for example, when m=30, n=10, the panel body has 300 touch sensing electrodes 3, 29 rows of gaps.
Charging the a touch sensing electrodes 3 from the opposite terminal area for maintaining a voltage during panel display through a capacitors; during the panel display, the transistor is turned off to avoid affecting the touch function. When the COM electrode is coupled with the data line and the walk haltingly line, the transverse stripes of the touch panel can be compensated, so that a better display effect is obtained.
In summary, according to the embedded touch display structure provided by the invention, the transistor is arranged to realize the switching function, the compensation time for the touch sensing electrode is controlled, the capacitor is arranged to maintain the voltage during the display period of the panel, so that the influence on the touch function of the panel is avoided, and the first wiring is arranged to additionally supplement charges to the COM electrode during the display period, so that the transverse stripes caused by insufficient charging are improved; the embedded touch display structure of this scheme design can effectively improve the cross grain problem of panel to the display effect of reinforcing panel.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (3)
1. The embedded touch display structure comprises a panel body and an IC chip, wherein the IC chip is arranged on one side of the panel body, the panel body comprises a terminal area and an opposite terminal area, more than two touch sensing electrodes are arranged in the terminal area and the opposite terminal area, each touch sensing electrode is correspondingly connected with one sensing wire, and each touch sensing electrode is connected with the IC chip through one corresponding sensing wire;
one end of each capacitor is respectively connected with one touch sensing electrode of the corresponding opposite terminal area and the source electrode of the corresponding transistor through the corresponding second wiring, the other end of each capacitor is grounded, the drain electrode of each transistor is connected with the first wiring, and the grid electrodes of more than two transistors are sequentially connected;
the first wiring is arranged outside the panel body and surrounds the panel body;
the capacitor and the transistor are arranged outside the panel body and are positioned on two opposite sides of the longitudinal axis direction of the panel body;
the capacitor and the transistor are positioned between the panel body and the first wiring;
more than two touch sensing electrodes of the terminal area and the opposite terminal area are arranged in an array mode;
the first wiring and the second wiring are both reference voltage wirings.
2. The in-cell touch display structure of claim 1, wherein the touch sensing electrode is a transparent common electrode.
3. The in-cell touch display structure of claim 2, wherein the material of the touch sensing electrode is indium oxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910388385.6A CN110109571B (en) | 2019-04-29 | 2019-04-29 | Embedded touch display structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910388385.6A CN110109571B (en) | 2019-04-29 | 2019-04-29 | Embedded touch display structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110109571A CN110109571A (en) | 2019-08-09 |
| CN110109571B true CN110109571B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910388385.6A Active CN110109571B (en) | 2019-04-29 | 2019-04-29 | Embedded touch display structure |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110570826B (en) * | 2019-08-29 | 2021-07-09 | 福建华佳彩有限公司 | Display panel driving method |
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| CN103226423A (en) * | 2013-03-29 | 2013-07-31 | 北京京东方光电科技有限公司 | Embedded type capacitor touch display panel, display device, control device and method |
| CN105094442A (en) * | 2015-08-20 | 2015-11-25 | 京东方科技集团股份有限公司 | Embedded touch control display panel, drive method thereof and touch control display device |
| CN204856449U (en) * | 2014-10-17 | 2015-12-09 | 瑞鼎科技股份有限公司 | Embedded mutual capacitance touch panel |
| CN105528128A (en) * | 2014-10-17 | 2016-04-27 | 瑞鼎科技股份有限公司 | In-cell touch panel and trace layout thereof |
| CN107479742A (en) * | 2017-07-12 | 2017-12-15 | 武汉华星光电技术有限公司 | In cell type touch control displays |
| CN109634466A (en) * | 2019-01-30 | 2019-04-16 | 武汉华星光电半导体显示技术有限公司 | A kind of OLED touch-control display panel and its time-sharing multiplex driving method |
| CN209911943U (en) * | 2019-04-29 | 2020-01-07 | 福建华佳彩有限公司 | Embedded touch display structure |
-
2019
- 2019-04-29 CN CN201910388385.6A patent/CN110109571B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103019492A (en) * | 2012-12-21 | 2013-04-03 | 北京京东方光电科技有限公司 | Embedded capacitive touch control display panel, display equipment, control device and control method |
| CN103226423A (en) * | 2013-03-29 | 2013-07-31 | 北京京东方光电科技有限公司 | Embedded type capacitor touch display panel, display device, control device and method |
| CN204856449U (en) * | 2014-10-17 | 2015-12-09 | 瑞鼎科技股份有限公司 | Embedded mutual capacitance touch panel |
| CN105528126A (en) * | 2014-10-17 | 2016-04-27 | 瑞鼎科技股份有限公司 | In-cell touch panel and trace layout thereof |
| CN105528128A (en) * | 2014-10-17 | 2016-04-27 | 瑞鼎科技股份有限公司 | In-cell touch panel and trace layout thereof |
| CN105094442A (en) * | 2015-08-20 | 2015-11-25 | 京东方科技集团股份有限公司 | Embedded touch control display panel, drive method thereof and touch control display device |
| CN107479742A (en) * | 2017-07-12 | 2017-12-15 | 武汉华星光电技术有限公司 | In cell type touch control displays |
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| CN209911943U (en) * | 2019-04-29 | 2020-01-07 | 福建华佳彩有限公司 | Embedded touch display structure |
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| CN110109571A (en) | 2019-08-09 |
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