CN108287620B - Flexible display screen and touch sensing device thereof - Google Patents
Flexible display screen and touch sensing device thereof Download PDFInfo
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- CN108287620B CN108287620B CN201710014557.4A CN201710014557A CN108287620B CN 108287620 B CN108287620 B CN 108287620B CN 201710014557 A CN201710014557 A CN 201710014557A CN 108287620 B CN108287620 B CN 108287620B
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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
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/301—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
Abstract
The invention relates to a flexible display screen and a touch sensing device thereof. The touch sensing device comprises a plurality of first touch electrodes, a plurality of second touch electrodes, a connecting line and a lapping line, wherein the first touch electrodes and the second touch electrodes are all positioned on a non-luminous area of a luminous layer of the flexible display screen, and the first touch electrodes and the second touch electrodes are adjacent; the adjacent first touch electrodes are connected in the column direction through the connecting lines, and the adjacent second touch electrodes are connected in the row direction through the overlapping lines. The touch sensing device does not affect the light emitting area of the light emitting layer, and can reduce the overall thickness of the flexible display screen.
Description
Technical Field
The invention relates to the technical field of displays, in particular to a flexible display screen and a touch sensing device thereof.
Background
Touch sensing of a conventional Active-matrix organic light emitting diode (AMOLED) glass substrate display screen adopts an On-Cell (referring to a method of embedding a touch panel function between a color filter substrate and a polarizing plate) structure.
For the flexible display screen, in order to realize the folding function, the thickness of the flexible display screen is as thin as possible. Generally, a touch function is realized by fabricating a touch display layer on a light emitting layer of a flexible display screen, and the touch display layer increases the thickness of the flexible display screen.
Disclosure of Invention
Based on this, it is necessary to provide a flexible display screen and a touch sensing device thereof, aiming at the problem of how to reduce the overall thickness of the flexible display screen.
A touch sensing device is used for a flexible display screen, and comprises a plurality of first touch electrodes, a plurality of second touch electrodes, a connecting line and a lapping line, wherein the first touch electrodes and the second touch electrodes are all positioned on a non-luminous area of a luminous layer of the flexible display screen, and the first touch electrodes and the second touch electrodes are adjacent; the adjacent first touch electrodes are connected in the column direction through the connecting lines, and the adjacent second touch electrodes are connected in the row direction through the overlapping lines.
The touch sensing device comprises a plurality of first touch electrodes, a plurality of second touch electrodes, connecting lines and overlapping lines, wherein the first touch electrodes and the second touch electrodes are located on a non-luminous area of a luminous layer of the flexible display screen and are adjacent to each other, the adjacent first touch electrodes are connected in the column direction through the connecting lines, and the adjacent second touch electrodes are connected in the row direction through the overlapping lines, so that capacitance between the first touch electrodes and the second touch electrodes can be changed, an electric field between the first touch electrodes and the second touch electrodes can be changed during touch, a touch function is realized, and the first touch electrodes and the second touch electrodes are located in the non-luminous area of the luminous layer, so that a touch layer is not required to be manufactured, and the overall thickness of the flexible display screen is reduced.
In one embodiment, the first touch electrode is made of molybdenum aluminum molybdenum or titanium aluminum titanium which are sequentially laminated, or the first touch electrode is made of molybdenum; the second touch electrode is made of molybdenum aluminum molybdenum or titanium aluminum titanium which are sequentially laminated, or the second touch electrode is made of molybdenum.
In one embodiment, the connecting line and the first touch electrode are made of the same material.
A flexible display screen comprises a light-emitting layer and the touch sensing device, wherein the light-emitting layer comprises a light-emitting area and a non-light-emitting area, a plurality of pixel units are arranged in the light-emitting area and are repeatedly arranged in the row and column directions, each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, and the edges of a first touch electrode and a second touch electrode surround the first sub-pixels, the second sub-pixels and the third sub-pixels.
In one embodiment, the position of the pixel unit is divided into a first part and a second part by a horizontal line, the first sub-pixel and the second sub-pixel are located in the first part, the third sub-pixel is located in the second part, the position of the first touch electrode covers two adjacent first sub-pixels, two adjacent second sub-pixels and three adjacent third sub-pixels, and the position of the second touch electrode covers three adjacent first sub-pixels, three adjacent second sub-pixels and two adjacent third sub-pixels.
In one embodiment, the length of the connection line is equal to the length of the pixel unit.
In one embodiment, the overlapping line overlaps at the third sub-pixel adjacent to the connection line.
In one embodiment, the first sub-pixel, the second sub-pixel and the third sub-pixel are sequentially arranged, the position of the first touch electrode and the position of the second touch electrode both cover the size of a matrix with two rows and ten columns, the matrix comprises two repeating units, and the repeating units are composed of eleven consecutive adjacent first sub-pixels, second sub-pixels and third sub-pixels in the row direction.
In one embodiment, the length of the connecting line is a minimum distance between adjacent first touch electrodes.
In one embodiment, the overlapping lines overlap between adjacent connecting lines.
According to the flexible display screen, the touch sensing device is arranged on the light emitting layer, and is located in the non-light emitting area of the light emitting layer, the light emitting area is not affected, in addition, additional layers are not needed, and the overall thickness of the flexible display layer is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a non-light-emitting area of a light-emitting layer of a touch sensing device according to an embodiment;
fig. 2 is a schematic structural diagram of a non-light-emitting area of a light-emitting layer of a touch sensing device according to another embodiment.
Detailed Description
For a foldable flexible display screen, it is desirable that the overall thickness thereof is as thin as possible. According to the invention, the touch sensing device is arranged in the non-light-emitting area of the light-emitting layer of the flexible display screen, so that the overall thickness of the flexible display screen is reduced. Specifically, the touch sensing device comprises a plurality of first touch electrodes, a plurality of second touch electrodes, a connecting line and a bonding wire. The plurality of first touch electrodes and the plurality of second touch electrodes are located on a non-light emitting area of a light emitting layer of the flexible display screen.
In addition, the first touch electrode and the second touch electrode are not overlapped and adjacent, and the first touch electrode and the second touch electrode occupy all the non-light emitting areas of the light emitting layer. The adjacent first touch electrodes are connected in the column direction by connecting lines, and the adjacent second touch electrodes are connected in the row direction by overlapping lines. Therefore, capacitance is formed between the first touch electrode and the second touch electrode, and when the display screen is touched, an electric field between the first touch electrode and the second touch electrode changes.
In this embodiment, the first touch electrode and the second touch electrode are both formed by direct etching or vapor deposition on the non-light emitting region of the light emitting layer.
Specifically, as shown in fig. 1, the light-emitting layer of the flexible display panel includes a light-emitting region and a non-light-emitting region, a plurality of pixel units 100 are disposed in the light-emitting region, the plurality of pixel units 100 are repeatedly arranged in a row and column direction, and the pixel unit 100 includes a first sub-pixel 110, a second sub-pixel 120, and a third sub-pixel 130. In the present embodiment, the first sub-pixel 110 is a red sub-pixel, the second sub-pixel 120 is a green sub-pixel, and the third sub-pixel 130 is a blue sub-pixel. The position of the pixel unit 100 is divided into a first portion and a second portion by a horizontal line, the first sub-pixel 110 and the second sub-pixel 120 are located in the first portion, and the third sub-pixel 130 is located in the second portion. The first sub-pixel 110 and the second sub-pixel 120 are the same in size, and the third sub-pixel 120 is twice as large as the first sub-pixel 110.
Referring again to fig. 1, the touch sensing apparatus includes a first touch electrode 12, a second touch electrode 14, a connection line 16, and a crossover line 18. Specifically, in the present embodiment, the number of the first touch electrodes 12 and the second touch electrodes 14 is multiple, and both the first touch electrodes 12 and the second touch electrodes 14 are located in the non-light-emitting area and do not affect the light-emitting area. In addition, the first touch electrode 12 and the second touch electrode 14 do not overlap and are adjacent to each other, and the plurality of first touch electrodes 12 and the plurality of touch electrodes 14 occupy a non-light emitting region of the light emitting layer.
In the present embodiment, the first touch electrode 12 is located at a position covering two adjacent first sub-pixels 110, two adjacent second sub-pixels 120, and three adjacent third sub-pixels 130. The second touch electrode 14 is located to cover three adjacent first sub-pixels 110, three adjacent second sub-pixels 120 and two adjacent third sub-pixels 130.
The plurality of first touch electrodes 12 are connected in the column direction (X direction shown in fig. 1) by connection lines 16 so that the plurality of first touch electrodes 12 communicate in the X direction. The first touch electrode 12 is made of a molybdenum aluminum molybdenum laminate. In the present embodiment, the material used for the connection line 16 and the first touch electrode 12 is the same. Therefore, when the first touch electrode 12 and the connecting line 16 are manufactured, molybdenum aluminum molybdenum is directly manufactured on the non-light-emitting area by etching or vapor deposition and the like. As can be seen from fig. 1, the length of the connection line 16 in the column direction is the length of the third sub-pixel 130.
The material used for the first touch electrode 12 may be molybdenum, titanium, or aluminum, or may be titanium aluminum titanium, which is laminated in this order.
The plurality of second touch electrodes 14 are connected in the row direction (Y direction shown in fig. 1) by crossover lines 18. Since the first touch electrodes 12 and the second touch electrodes 14 are both located on the non-light-emitting region, the adjacent second touch electrodes 14 cannot be directly electrically connected in order to communicate the plurality of second touch electrodes 14 in the Y direction, and as can be seen from fig. 1, a connection line 16 is located at a connection point of the adjacent second touch electrodes 14. Therefore, the connecting lines 16 are overlapped through the overlapping lines 18, and the adjacent second touch electrodes 14 are connected, so that a reticular touch sensing pattern is formed. Capacitances are formed between the plurality of first touch electrodes 12 and the plurality of second touch electrodes 14. In the present embodiment, the second touch electrode 14 is also formed by etching or vapor deposition directly on the non-light-emitting region. The material used for the second touch electrode 14 may be molybdenum, titanium, or aluminum, or titanium aluminum titanium, molybdenum aluminum molybdenum, or the like, which are stacked in this order.
It should be noted that the sizes of the positions where the first touch electrode 12 and the second touch electrode 14 are located may be interchanged. In addition, the sizes of the positions where the first touch electrode 12 and the second touch electrode 14 are located can be changed according to actual needs.
As shown in fig. 2, the light-emitting layer of the flexible display panel includes a light-emitting region and a non-light-emitting region, a plurality of pixel units 200 are disposed in the light-emitting region, the plurality of pixel units 200 are repeatedly arranged in a row and column direction, and the pixel unit 200 includes a first sub-pixel 210, a second sub-pixel 220, and a third sub-pixel 230. In the present embodiment, the first sub-pixel 210 is a red sub-pixel, the second sub-pixel 220 is a green sub-pixel, and the third sub-pixel 230 is a blue sub-pixel. The first sub-pixel 210, the second sub-pixel 220 and the third sub-pixel 230 in each pixel unit 200 are sequentially arranged, and the first sub-pixel 210, the second sub-pixel 220 and the third sub-pixel 230 have the same size and shape.
Referring again to fig. 2, the touch sensing device 20 includes a first touch electrode 22, a second touch electrode 24, a connection line 26, and a crossover line 28. Specifically, in the present embodiment, the number of the first touch electrodes 22 and the second touch electrodes 24 is multiple, and both the first touch electrodes 22 and the second touch electrodes 24 are located on the non-light-emitting area, and do not affect the light-emitting area. In addition, the first touch electrode 22 and the second touch electrode 24 do not overlap and are adjacent, and the plurality of first touch electrodes 22 and the plurality of touch electrodes 24 occupy a non-light emitting region of the light emitting layer.
In the present embodiment, the size of the position where the first touch electrode 22 is located is 11 × 2 subpixels. Specifically, the size of the first touch electrode 22 is the size of a matrix of two rows and ten columns, which includes two repeating units composed of eleven consecutive adjacent first, second, and third sub-pixels 210, 220, and 230 in the row direction. The second touch electrode 24 is located at the same size as the first touch electrode 22.
The plurality of first touch electrodes 22 are connected in the column direction (X direction shown in fig. 2) by connection lines 26 so that the plurality of first touch electrodes 22 communicate in the X direction. The first touch electrode 22 is made of a molybdenum aluminum molybdenum laminate. In the present embodiment, the connection line 26 and the first touch electrode 22 are made of the same material. Therefore, when the first touch electrode 22 and the connecting line 26 are manufactured, molybdenum aluminum molybdenum is directly manufactured on the non-light-emitting region by etching, vapor deposition or the like. As can be seen from fig. 2, the length of the connection line 26 in the column direction is the minimum distance between two adjacent first touch electrodes 22, that is, the length of the connection line 26 in the column direction is the distance between two adjacent sides of the adjacent first touch electrodes 22.
The material used for the first touch electrode 22 may be molybdenum, titanium, or aluminum, or may be titanium aluminum titanium, which is laminated in this order.
The plurality of second touch electrodes 24 are connected by crossover lines 28 in the row direction (Y direction shown in fig. 2). Since the first touch electrodes 22 and the second touch electrodes 24 are both located in the non-light-emitting region, the adjacent second touch electrodes 24 cannot be directly electrically connected in order to communicate the plurality of second touch electrodes 24 in the Y direction, and as can be seen from fig. 2, a connection line 26 is located at the connection point of the adjacent second touch electrodes 24. So that the connecting lines 26 are overlapped by the overlapping lines 28 to connect the adjacent second touch electrodes 24, thereby forming a net-shaped touch sensing pattern. The length of the overlapping line 28 is the same as the width of the second sub-pixel 220, that is, the overlapping line 28 crosses the second sub-pixel 220 having the connection line 26 disposed at both sides. Capacitances are formed between the plurality of first touch electrodes 22 and the plurality of second touch electrodes 24. In the present embodiment, the second touch electrode 24 is also formed by etching or vapor deposition directly on the non-light-emitting region. The material used for the second touch electrode 24 may be molybdenum, titanium, or aluminum, or may be molybdenum aluminum molybdenum, titanium aluminum titanium, or the like, which are stacked in this order.
The touch sensor device described above is also applicable if the light-emitting region of the light-emitting layer has another pixel structure.
The touch sensing device comprises a plurality of first touch electrodes, a plurality of second touch electrodes, connecting lines and overlapping lines, wherein the first touch electrodes and the second touch electrodes are located on a non-light-emitting area of a light-emitting layer of the flexible display screen, the first touch electrodes and the second touch electrodes are adjacent and do not overlap, the adjacent first touch electrodes are connected in the column direction through the connecting lines, the adjacent second touch electrodes are connected in the row direction through the overlapping lines, therefore, capacitance between the first touch electrodes and the second touch electrodes can be achieved, an electric field between the first touch electrodes and the second touch electrodes can be changed during touch, a touch function is achieved, the first touch electrodes and the second touch electrodes are located in the non-light-emitting area of the light-emitting layer, and a touch layer does not need to be manufactured, and therefore the overall thickness of the flexible display screen is reduced. In addition, the flexible display screen with the touch sensing device has the advantage that the whole thickness is reduced.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. The flexible display screen is characterized by comprising a light-emitting layer and a touch sensing device, wherein the light-emitting layer comprises a light-emitting area and a non-light-emitting area, a plurality of pixel units are arranged in the light-emitting area, the pixel units are repeatedly arranged in the row and column directions, each pixel unit comprises a first sub-pixel, a second sub-pixel and a third sub-pixel, the touch sensing device comprises a plurality of first touch electrodes, a plurality of second touch electrodes, a connecting line and a lapping line, and the edges of the first touch electrodes and the second touch electrodes surround the first sub-pixels, the second sub-pixels and the third sub-pixels;
the plurality of first touch electrodes and the plurality of second touch electrodes are located on a non-light-emitting area of a light-emitting layer of the flexible display screen, and the first touch electrodes and the second touch electrodes are adjacent; the adjacent first touch electrodes are connected in the column direction through the connecting lines, and the adjacent second touch electrodes are connected in the row direction through the lapping lines;
the first touch electrode and the second touch electrode occupy all non-light emitting areas of the light emitting layer.
2. The flexible display screen of claim 1, wherein the first touch electrode is made of molybdenum aluminum molybdenum or titanium aluminum titanium which are laminated in sequence, or the first touch electrode is made of molybdenum; the second touch electrode is made of molybdenum aluminum molybdenum or titanium aluminum titanium which are sequentially laminated, or the second touch electrode is made of molybdenum.
3. The flexible display screen of claim 1, wherein the connecting wires and the first touch electrodes are made of the same material.
4. The flexible display screen of claim 1, wherein the first touch electrode and the second touch electrode are both made by a direct etching or vapor deposition method on the non-light emitting area of the light emitting layer.
5. The flexible display screen of claim 1, wherein the pixel unit is located at a position that is divided into a first portion and a second portion by a horizontal line, the first sub-pixel and the second sub-pixel are located at the first portion, the third sub-pixel is located at the second portion, the first touch electrode is located at a position that covers two adjacent first sub-pixels, two adjacent second sub-pixels, and three adjacent third sub-pixels, and the second touch electrode is located at a position that covers three adjacent first sub-pixels, three adjacent second sub-pixels, and two adjacent third sub-pixels.
6. The flexible display screen of claim 5, wherein the length of the connecting line is equal to the length of the pixel unit.
7. The flexible display screen of claim 6, wherein the overlapping line overlaps at the third sub-pixel adjacent to the connecting line.
8. The flexible display screen of claim 1, wherein the first sub-pixel, the second sub-pixel, and the third sub-pixel are sequentially arranged, the first touch electrode and the second touch electrode are both located at a position covering a size of a matrix with two rows and ten columns, the matrix comprises two repeating units, and the repeating units are composed of eleven consecutive adjacent first sub-pixels, second sub-pixels, and third sub-pixels in a row direction.
9. The flexible display screen of claim 8, wherein the length of the connecting line is a minimum distance between adjacent first touch electrodes.
10. The flexible display of claim 9, wherein the overlapping lines overlap between adjacent ones of the connecting lines.
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| CN201710014557.4A CN108287620B (en) | 2017-01-09 | 2017-01-09 | Flexible display screen and touch sensing device thereof |
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| CN201710014557.4A CN108287620B (en) | 2017-01-09 | 2017-01-09 | Flexible display screen and touch sensing device thereof |
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| CN108287620B true CN108287620B (en) | 2021-03-26 |
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| CN111801643A (en) * | 2018-02-12 | 2020-10-20 | 深圳市柔宇科技股份有限公司 | Touch display panel and touch display device |
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| CN204303812U (en) * | 2014-11-28 | 2015-04-29 | 京东方科技集团股份有限公司 | Dot structure, transparent touch display screen and display device |
| CN205427804U (en) * | 2016-03-11 | 2016-08-03 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
| CN105845708A (en) * | 2016-04-20 | 2016-08-10 | 上海天马微电子有限公司 | Flexible integrated touch control display panel and manufacturing method thereof |
| CN105955530A (en) * | 2016-04-29 | 2016-09-21 | 信利光电股份有限公司 | Touch screen manufacturing method, touch screen and touch display device |
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| JP4092914B2 (en) * | 2001-01-26 | 2008-05-28 | セイコーエプソン株式会社 | MASK MANUFACTURING METHOD, ORGANIC ELECTROLUMINESCENT DEVICE MANUFACTURING METHOD |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204303812U (en) * | 2014-11-28 | 2015-04-29 | 京东方科技集团股份有限公司 | Dot structure, transparent touch display screen and display device |
| CN205427804U (en) * | 2016-03-11 | 2016-08-03 | 厦门天马微电子有限公司 | Touch display panel and touch display device |
| CN105845708A (en) * | 2016-04-20 | 2016-08-10 | 上海天马微电子有限公司 | Flexible integrated touch control display panel and manufacturing method thereof |
| CN105955530A (en) * | 2016-04-29 | 2016-09-21 | 信利光电股份有限公司 | Touch screen manufacturing method, touch screen and touch display device |
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