CN109491547B - Touch structure of self-contained In-cell display screen - Google Patents
Touch structure of self-contained In-cell display screen Download PDFInfo
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- CN109491547B CN109491547B CN201811589652.8A CN201811589652A CN109491547B CN 109491547 B CN109491547 B CN 109491547B CN 201811589652 A CN201811589652 A CN 201811589652A CN 109491547 B CN109491547 B CN 109491547B
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- 230000002093 peripheral effect Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
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
-
- 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 field of touch control of display screens, in particular to a novel self-contained In-cell display screen touch control structure, which comprises a dummy pixel area and a normal pixel area, wherein the normal pixel area is arranged corresponding to the In-cell display screen touch control area, the dummy pixel area is arranged at the periphery of the normal pixel area and is positioned between the normal pixel area and a signal interference source arranged outside, and the dummy pixel area is configured to shield signal interference of the signal interference source to the normal pixel area. On the basis of the conventional In-cell process, the dummy pixel area is optimized, so that the signal interference of the peripheral signal interference source to the normal pixel area can be shielded by the dummy pixel area arranged at the periphery, the influence of the peripheral driving circuit and the signal line on the capacitance value of the four-side touch sensor is reduced, and the uniformity of the capacitance value of the touch sensor In the panel is improved.
Description
Technical Field
The invention relates to the field of display screen touch control, in particular to a self-contained In-cell display screen touch control structure.
Background
In the existing LCD display technology, the integrated touch function has been widely used for medium and small sized panels. The pure In-cell touch display panel adopts a self-contained display technology that a multiplexing common electrode layer is used as a common electrode or a touch sensor, and the touch sensor electrode under the framework can be influenced by factors such as signal lines, peripheral sensors, parasitic capacitance or resistance of touch routing and the like due to the distance between the touch sensor electrode and an IC chip and the arrangement position difference of the panel. Under the structure, the capacitance values of the sensors have differences under no touch control action, and if the differences are too large, the driving IC chip cannot compensate the in-plane differences, so that the touch control performance is affected. Therefore, it is particularly necessary to provide a self-contained In-cell display screen touch structure capable of reducing the influence of the peripheral driving circuit and the signal line on the capacitance value of the touch sensor.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: a self-contained In-cell display screen touch structure is provided. The influence of the peripheral driving circuit and the signal line on the capacitance value of the touch sensor is reduced, so that a more uniform initial value of the capacitance in the panel is obtained.
In order to solve the technical problems, the invention adopts the following technical scheme: the touch structure of the self-contained In-cell display screen comprises a dummy pixel area and a normal pixel area, wherein the normal pixel area is arranged corresponding to the touch area of the In-cell display screen, the dummy pixel area is arranged on the periphery of the normal pixel area and is positioned between the normal pixel area and a signal interference source arranged outside, and the dummy pixel area is configured to shield signal interference of the signal interference source on the normal pixel area.
The invention has the beneficial effects that: on the basis of the conventional In-cell process, the dummy pixel area is optimized, so that the signal interference of the peripheral signal interference source to the normal pixel area can be shielded by the dummy pixel area arranged at the periphery, the influence of the peripheral driving circuit and the signal line on the capacitance value of the four-side touch sensor is reduced, and the uniformity of the capacitance value of the touch sensor In the panel is improved.
Drawings
FIG. 1 is a schematic view of a touch area of a display screen of a self-contained In-cell display screen touch structure according to the present invention;
fig. 2 is a schematic view of a touch area of a display screen according to a second embodiment of a touch structure of a self-contained In-cell display screen of the present invention;
fig. 3 is a schematic view of a touch area of a display screen according to a third embodiment of a touch structure of a self-contained In-cell display screen of the present invention;
description of the reference numerals:
1. a dummy pixel region; 2. a normal pixel region; 3. and a common electrode 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 dummy pixel area at the outermost periphery of the display area is set as a shielding ring capable of shielding a peripheral signal interference source, so that the influence of a peripheral driving circuit or a signal wire on the four-side touch sensor is reduced.
Referring to fig. 1-3, the present invention provides the following technical solutions:
the touch structure of the self-contained In-cell display screen comprises a dummy pixel area and a normal pixel area, wherein the normal pixel area is arranged corresponding to the touch area of the In-cell display screen, the dummy pixel area is arranged on the periphery of the normal pixel area and is positioned between the normal pixel area and a signal interference source arranged outside, and the dummy pixel area is configured to shield signal interference of the signal interference source on the normal pixel area.
From the above description, the beneficial effects of the invention are as follows: on the basis of the conventional In-cell process, the dummy pixel area is optimized, so that the signal interference of the peripheral signal interference source to the normal pixel area can be shielded by the dummy pixel area arranged at the periphery, the influence of the peripheral driving circuit and the signal line on the capacitance value of the four-side touch sensor is reduced, and the uniformity of the capacitance value of the touch sensor In the panel is improved.
Further, the normal pixel area includes a plurality of first touch units, the plurality of first touch units are arranged in an array, the first touch units include first gate wires, first TFT devices, first touch wires and first source wires, sources of the first TFT devices are connected with the first source wires, gates of the first TFT devices are connected with the first gate wires, every two of the first gate wires are arranged in parallel, every two of the first touch wires are arranged in parallel, every two of the first source wires are arranged in parallel, the first touch wires are arranged in parallel with the first source wires, and the first gate wires are arranged in perpendicular to the first touch wires;
the false pixel area comprises a plurality of second touch units, the second touch units are arranged in an array, each second touch unit comprises a second grid electrode wire, a second TFT device, a second touch wire and a second source electrode wire, the source electrode of the second TFT device is connected with the second source electrode wire, the grid electrode of the second TFT device is connected with the second grid electrode wire, two second grid electrode wires are arranged in parallel, two second touch wire are arranged in parallel, two second source electrode wires are arranged in parallel, the second touch wire is arranged in parallel with the second source electrode wire, the second grid electrode wire is arranged perpendicular to the first touch wire, and the second grid electrode wire is collinear with the first grid electrode wire.
Further, the normal pixel region is divided into two or more regions on average.
From the above description, it can be seen that the normal pixel area is uniformly divided into more than two areas, so as to effectively improve the pixel display effect of the display screen.
Further, the dummy pixel region further includes a common electrode wire, the common electrode wire and the second gate wire are disposed parallel to each other, and the common electrode wire and the second source wire are disposed perpendicular to each other.
As can be seen from the above description, the arrangement of the common electrode trace in the dummy pixel region can effectively improve the impedance uniformity of the touch electrode in the dummy pixel region.
Further, the number of the common electrode wires is 1.
As can be seen from the above description, 1 common electrode trace is provided in the dummy pixel region, the trace is simpler, and the touch electrode in the dummy pixel region can reach the optimal impedance value.
Further, the dummy pixel region is divided into two or more regions.
As can be seen from the above description, dividing the dummy pixel region into more than two regions can effectively shield the signal interference of the signal interference source to the normal pixel region and improve the uniformity of the capacitance value of the touch sensor in the panel.
Further, the number of the regions divided by the dummy pixel regions ranges from 1 to 3.
From the above description, the dummy pixel area is divided into 1-3 areas, which can effectively shield the signal interference of the signal interference source to the normal pixel area and improve the uniformity of the capacitance value of the touch sensor in the panel.
Further, the number of the regions divided by the dummy pixel regions is 3.
As can be seen from the above description, dividing the dummy pixel region into 3 regions can achieve the best shielding effect.
Referring to fig. 1, a first embodiment of the present invention is as follows:
the utility model provides a self-contained In-cell display screen touch structure, includes dummy pixel region 1 and normal pixel region 2, normal pixel region 1 corresponds In-cell display screen touch region setting, dummy pixel region 1 sets up In normal pixel region 2's periphery and is located normal pixel region 2 and peripheral hardware's signal interference source between, dummy pixel region 1 is configured to shielding signal interference source is to normal pixel region's signal interference.
The normal pixel area 2 is divided into more than two areas on average, the normal pixel area 2 comprises a plurality of first touch units, the plurality of first touch units are arranged in an array, each first touch unit comprises a first grid electrode wire, a first TFT device, a first touch wire and a first source electrode wire, a source electrode of the first TFT device is connected with the first source electrode wire, a grid electrode of the first TFT device is connected with the first grid electrode wire, every two first grid electrode wires are arranged in parallel, every two first touch wires are arranged in parallel, every two first source electrode wires are arranged in parallel, the first touch wires and the first source electrode wires are arranged in parallel, and the first grid electrode wires and the first touch wires are arranged in a mutually perpendicular mode;
the dummy pixel area 1 comprises a plurality of second touch units, the second touch units are arranged in an array, each second touch unit comprises a second grid electrode wiring, a second TFT device, a second touch wiring and a second source electrode wiring, the source electrode of the second TFT device is connected with the second source electrode wiring, the grid electrode of the second TFT device is connected with the second grid electrode wiring, two pairs of second grid electrode wirings are arranged in parallel, two pairs of second touch wirings are arranged in parallel, two pairs of second source electrode wirings are arranged in parallel, the second touch wirings are arranged in parallel with the second source electrode wirings, the second grid electrode wirings are arranged perpendicular to the first touch wirings, and the second grid electrode wirings are collinear with the first grid electrode wirings.
The dummy pixel region is provided with a common electrode corresponding to a common electrode layer of a Liquid Crystal Display (LCD) process step, and the LCD process step is as follows:
providing a glass layer, wherein a grid insulating layer is covered on the surface of the glass layer;
forming a semiconductor layer which covers the surface of the gate insulating layer;
forming a second insulating layer, wherein the second insulating layer covers the surface of the semiconductor layer;
forming a third insulating layer, wherein the third insulating layer covers the surface of the second insulating layer;
forming a planarization layer, wherein the planarization layer covers the surface of the third insulating layer;
forming a fourth insulating layer, wherein the fourth insulating layer covers the surface of the planarization layer;
forming a third metal layer, wherein the third metal layer covers the surface of the fourth insulating layer;
forming a common electrode layer, wherein the common electrode layer covers the surface of the third metal layer;
forming a sixth insulating layer, wherein the sixth insulating layer covers the surface of the common electrode layer;
and forming a display electrode layer, wherein the display electrode layer covers the surface of the sixth insulating layer.
In the manufacturing process, corresponding structural layers are applied through the process steps of film coating, cleaning, photoresist coating, exposure, development, etching, photoresist stripping and the like.
Referring to fig. 2, a second embodiment of the present invention is as follows:
the difference between the second embodiment and the first embodiment is that the dummy pixel area 1 of the second embodiment further includes a common electrode trace 3, the common electrode trace 3 and the second gate trace are disposed parallel to each other, and the common electrode trace 3 and the second source trace are disposed perpendicular to each other.
Referring to fig. 3, a third embodiment of the present invention is as follows:
the difference between the third embodiment and the second embodiment is that the dummy pixel area 1 in the third embodiment is divided into two or more areas, the number of the divided areas of the dummy pixel area 1 ranges from 1 to 3, and the preferred number of the divided areas of the dummy pixel area 1 is 3.
In summary, according to the self-contained In-cell display screen touch structure provided by the invention, on the basis of the conventional In-cell process, the dummy pixel region is optimized, so that the signal interference of the peripheral signal interference source on the normal pixel region can be shielded by the dummy pixel region arranged at the periphery, the influence of the peripheral driving circuit and the signal line on the capacitance value of the four-sided touch sensor is reduced, and the uniformity of the capacitance value of the touch sensor In the panel is improved.
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 (5)
1. The touch structure of the self-contained In-cell display screen is characterized by comprising a dummy pixel area and a normal pixel area, wherein the normal pixel area is arranged corresponding to the touch area of the In-cell display screen, the dummy pixel area is arranged at the periphery of the normal pixel area and is positioned between the normal pixel area and a signal interference source arranged outside, and the dummy pixel area is configured to shield signal interference of the signal interference source to the normal pixel area;
the normal pixel area comprises a plurality of first touch units, the plurality of first touch units are arranged in an array, the first touch units comprise first grid electrode wires, first TFT devices, first touch wires and first source electrode wires, the source electrodes of the first TFT devices are connected with the first source electrode wires, the grid electrodes of the first TFT devices are connected with the first grid electrode wires, every two first grid electrode wires are arranged in parallel, every two first touch wires are arranged in parallel, every two first source electrode wires are arranged in parallel, the first touch wires are arranged in parallel with the first source electrode wires, and the first grid electrode wires are arranged in perpendicular to the first touch wires;
the false pixel area comprises a plurality of second touch units, the second touch units are arranged in an array, each second touch unit comprises a second grid electrode wire, a second TFT device, a second touch wire and a second source electrode wire, the source electrode of the second TFT device is connected with the second source electrode wire, the grid electrode of the second TFT device is connected with the second grid electrode wire, every two second grid electrode wires are arranged in parallel, every two second touch wire are arranged in parallel, every two second source electrode wires are arranged in parallel, the second touch wire and the second source electrode wire are arranged in parallel, the second grid electrode wire and the first touch wire are arranged in perpendicular, and the second grid electrode wire and the first grid electrode wire are collinear;
the normal pixel region is divided into more than two regions on average;
the dummy pixel region further comprises a common electrode wire, the common electrode wire and the second grid wire are arranged in parallel, and the common electrode wire and the second source wire are arranged in perpendicular.
2. The touch structure of claim 1, wherein the number of common electrode traces is 1.
3. The touch structure of claim 1, wherein the dummy pixel area is divided into two or more areas.
4. The touch structure of claim 3, wherein the number of the dummy pixel regions is 1-3.
5. The touch structure of claim 4, wherein the number of the dummy pixel regions is 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811589652.8A CN109491547B (en) | 2018-12-25 | 2018-12-25 | Touch structure of self-contained In-cell display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811589652.8A CN109491547B (en) | 2018-12-25 | 2018-12-25 | Touch structure of self-contained In-cell display screen |
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| Publication Number | Publication Date |
|---|---|
| CN109491547A CN109491547A (en) | 2019-03-19 |
| CN109491547B true CN109491547B (en) | 2024-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811589652.8A Active CN109491547B (en) | 2018-12-25 | 2018-12-25 | Touch structure of self-contained In-cell display screen |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106095190A (en) * | 2016-06-29 | 2016-11-09 | 南京中电熊猫液晶显示科技有限公司 | In cell touch-control display panel and display packing thereof and manufacture method |
| CN106707591A (en) * | 2017-02-28 | 2017-05-24 | 上海天马微电子有限公司 | Array substrate, display panel and display device |
| KR20170081068A (en) * | 2015-12-31 | 2017-07-11 | 엘지디스플레이 주식회사 | Touch sensor integrated type display device |
| CN209460742U (en) * | 2018-12-25 | 2019-10-01 | 福建华佳彩有限公司 | It is a kind of novel from appearance In-cell display screen touch-control structure |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926732B (en) * | 2014-04-09 | 2017-05-17 | 厦门天马微电子有限公司 | TFT array substrate, display panel and display device |
| CN104035640B (en) * | 2014-05-30 | 2017-10-27 | 京东方科技集团股份有限公司 | A kind of In-cell touch panel and display device |
| CN106653770A (en) * | 2016-12-27 | 2017-05-10 | 武汉华星光电技术有限公司 | Display panel and array substrate thereof |
| CN106775165B (en) * | 2017-01-06 | 2019-12-24 | 武汉华星光电技术有限公司 | Embedded touch display panel and electronic device |
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- 2018-12-25 CN CN201811589652.8A patent/CN109491547B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170081068A (en) * | 2015-12-31 | 2017-07-11 | 엘지디스플레이 주식회사 | Touch sensor integrated type display device |
| CN106095190A (en) * | 2016-06-29 | 2016-11-09 | 南京中电熊猫液晶显示科技有限公司 | In cell touch-control display panel and display packing thereof and manufacture method |
| CN106707591A (en) * | 2017-02-28 | 2017-05-24 | 上海天马微电子有限公司 | Array substrate, display panel and display device |
| CN209460742U (en) * | 2018-12-25 | 2019-10-01 | 福建华佳彩有限公司 | It is a kind of novel from appearance In-cell display screen touch-control structure |
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| CN109491547A (en) | 2019-03-19 |
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