CN110362235B - Touch display panel and display device - Google Patents
Touch display panel and display device Download PDFInfo
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- CN110362235B CN110362235B CN201910675438.2A CN201910675438A CN110362235B CN 110362235 B CN110362235 B CN 110362235B CN 201910675438 A CN201910675438 A CN 201910675438A CN 110362235 B CN110362235 B CN 110362235B
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- 239000004973 liquid crystal related substance Substances 0.000 abstract description 12
- 238000000034 method Methods 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000059 patterning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
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- 230000035945 sensitivity Effects 0.000 description 3
- 244000141359 Malus pumila Species 0.000 description 2
- 235000021016 apples Nutrition 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
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- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 244000082204 Phyllostachys viridis Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
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- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
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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
- G06F3/0412—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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Liquid Crystal (AREA)
- Position Input By Displaying (AREA)
Abstract
The embodiment of the invention provides a touch display panel and a display device, comprising: the display device comprises an upper substrate, a lower substrate, a black matrix layer arranged on one side of the upper substrate facing the lower substrate, and a shielding electrode arranged between the upper substrate and the black matrix layer, wherein the shielding electrode is at least arranged in a region where a pattern of the black matrix layer is located. Based on the fact that the touch screen is arranged on one side, away from the black matrix layer, of the upper substrate, the display signals loaded in the liquid crystal screen with the black matrix layer can be shielded by using the shielding electrode arranged between the upper substrate and the black matrix layer, interference of the display signals on touch signals loaded in the touch screen is avoided, and touch accuracy is improved. Meanwhile, the shielding electrode is arranged at least in the region where the pattern of the black matrix layer is located, so that the influence of the shielding electrode on the pixel aperture opening ratio in the liquid crystal screen is avoided.
Description
Technical Field
The present invention relates to the field of touch display technologies, and in particular, to a touch display panel and a display device.
Background
The twenty-first century is the year of information explosion, and various high and new technologies are rapidly developed like spring bamboo shoots after rain. Various electronic products such as apples, samsung, LG and other high-tech companies are introduced, and the life of people is enriched. The electronic products that these companies push are mainly capacitive touch screens. Particularly, the capacitive touch screen provided by apple company has an excellent touch function, so that people can hold their hands. Many touch screens in the current market are close to the pace of apples, and various touch screens are pushed out.
In the development process of touch screens, the main touch schemes include external hanging and embedded touch schemes. The embedded touch screen comprises an On-cell and an In-cell touch structure. Specifically, an On-cell touch screen is a touch screen embedded between a color film substrate (CF) and a Polarizer (POL) of a Liquid Crystal Display (LCD). The structure causes that the touch control signal of the On-cell touch screen is easy to be interfered by the display signal of the liquid crystal screen, and the touch control accuracy is affected.
Disclosure of Invention
In view of the above, the embodiments of the present invention provide a touch display panel and a display device, which are used for solving the interference of a display signal on a touch signal and improving the touch accuracy.
Therefore, the touch display panel provided by the embodiment of the invention comprises an upper substrate, a lower substrate, a black matrix layer and a shielding electrode, wherein the upper substrate and the lower substrate are oppositely arranged, the black matrix layer is arranged on one side of the upper substrate facing the lower substrate, the shielding electrode is positioned between the upper substrate and the black matrix layer, and the shielding electrode is at least arranged in a region where a pattern of the black matrix layer is positioned.
In a possible implementation manner, in the touch display panel provided by the embodiment of the present invention, the shielding electrode is made of a metal material, and the shielding electrode has a grid-like structure located in an area where the pattern of the black matrix layer is located.
In a possible implementation manner, in the touch display panel provided by the embodiment of the present invention, the shielding electrode is made of a transparent conductive material, and the shielding electrode is entirely disposed on a side of the upper substrate facing the black matrix layer.
In a possible implementation manner, in the touch display panel provided by the embodiment of the present invention, the touch display panel further includes: a common electrode disposed between the upper substrate and the lower substrate;
the shielding electrode and the common electrode are loaded with the same electrical signal.
In a possible implementation manner, in the touch display panel provided by the embodiment of the present invention, the touch electrode layer includes: two layers of grid-shaped touch electrodes are overlapped.
In one possible implementation manner, in the touch display panel provided by the embodiment of the present invention, the mesh points of each of the grid-shaped touch electrodes are located in the area where the mesh points of the black matrix layer are located.
In a possible implementation manner, in the touch display panel provided by the embodiment of the present invention, two layers of the grid-shaped touch electrodes are staggered in the overlapping direction.
In a possible implementation manner, in the touch display panel provided by the embodiment of the present invention, the mesh shape of the mesh-shaped touch electrode is diamond.
In a possible implementation manner, in the touch display panel provided by the embodiment of the present invention, the touch display panel further includes: and the color resistance layer is arranged on one side of the black matrix layer, which is away from the upper substrate.
Based on the same inventive concept, an embodiment of the present invention provides a display device including the above touch display panel.
The invention has the following beneficial effects:
the touch display panel and the display device provided by the embodiment of the invention comprise: the display device comprises an upper substrate, a lower substrate, a black matrix layer arranged on one side of the upper substrate facing the lower substrate, and a shielding electrode arranged between the upper substrate and the black matrix layer, wherein the shielding electrode is at least arranged in a region where a pattern of the black matrix layer is located. Based on the fact that the touch screen is arranged on one side, away from the black matrix layer, of the upper substrate, the display signals loaded in the liquid crystal screen with the black matrix layer can be shielded by using the shielding electrode arranged between the upper substrate and the black matrix layer, interference of the display signals on touch signals loaded in the touch screen is avoided, and touch accuracy is improved. Meanwhile, the shielding electrode is arranged at least in the region where the pattern of the black matrix layer is located, so that the influence of the shielding electrode on the pixel aperture opening ratio in the liquid crystal screen is avoided.
Drawings
Fig. 1 is a schematic structural diagram of a touch display panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a touch display panel according to an embodiment of the invention;
fig. 3 is a schematic structural diagram of a shielding electrode and a touch electrode layer in the touch display panel shown in fig. 1.
Detailed Description
The following describes in detail a specific implementation of a touch display panel and a display device according to embodiments of the present invention with reference to the accompanying drawings.
The shape and size of each film layer in the drawings do not reflect the actual proportion thereof in the touch display panel, and the purpose is to illustrate the invention only.
As shown in fig. 1 and fig. 2, the touch display panel provided in the embodiment of the invention includes an upper substrate 101 and a lower substrate 102 opposite to each other, a black matrix layer 103 disposed on a side of the upper substrate 101 facing the lower substrate 102, and a shielding electrode 104 disposed between the upper substrate 101 and the black matrix layer 103, where the shielding electrode 104 is at least disposed in a region where a pattern of the black matrix layer 103 is located.
In the touch display panel provided by the embodiment of the invention, the display signal loaded in the liquid crystal screen with the black matrix layer 103 can be shielded by using the shielding electrode 104 arranged between the upper substrate 101 and the black matrix layer 103, so that the interference of the display signal on the touch signal loaded in the touch screen is avoided, and the touch accuracy is improved. Meanwhile, the shielding electrode 104 is arranged at least in the region where the pattern of the black matrix layer 103 is located, so that the influence of the shielding electrode 104 on the pixel aperture ratio in the liquid crystal screen is avoided. In addition, light emitted from the backlight in the liquid crystal panel is blocked by the black matrix layer 103 and does not interfere with the shielding electrode 104, so that no optical moire is generated, and a good optical effect can be achieved.
It should be noted that, at present, many common touch display panels are all equipped with an active stylus, when the active stylus slides on the touch display panel, the active stylus emits a signal, a touch electrode in the touch display panel receives the signal, and the signal change of the coordinate point is transmitted to an IC, and the IC calculates the touch position of the active stylus, thereby realizing the scribing effect of the active stylus. The touch display panel provided by the invention is provided with the active control pen, so that the interference of display signals in the liquid crystal screen on the emission signals (namely, touch signals) of the active touch pen can be effectively shielded, and the scribing sensitivity of the active touch pen is greatly improved.
In a specific implementation, in the touch display panel provided by the embodiment of the present invention, the shielding electrode 104 may be made of a metal material, and in order not to affect the pixel aperture ratio, the shielding electrode 104 may have a grid structure located in the area where the pattern of the black matrix layer 103 is located, as shown in fig. 1 and 3. It is to be understood that the pattern of the shielding electrode 104 is not limited to the grid-like structure as long as it is located in the region where the pattern of the black matrix layer 103 is located. In addition, compared with the scheme of manufacturing the electrode by using the indium tin oxide material commonly used in the prior art, the shielding electrode 104 is manufactured by using the metal material (such as aluminum, copper, silver and the like), so that the raw material cost is greatly reduced.
In a specific implementation, in the touch display panel provided by the embodiment of the present invention, the shielding electrode 104 may be made of a transparent conductive material, and at this time, the transparent conductive material does not affect the pixel aperture ratio, so that the shielding electrode 104 may be disposed on the entire side of the upper substrate 101 facing the black matrix layer 103, as shown in fig. 2. Of course, the pattern of the shielding electrode 104 made of the transparent conductive material may be a grid structure located in the region where the pattern of the black matrix layer 103 is located, which is not particularly limited herein.
In a specific implementation, in the touch display panel provided by the embodiment of the present invention, as shown in fig. 1 and fig. 2, the touch display panel may generally further include: a common electrode 105 disposed between the upper substrate 101 and the lower substrate 102; in order to avoid parasitic capacitance between the shielding electrode 104 and the common electrode 105 or the pixel electrode from affecting the display effect, the shielding electrode 104 and the common electrode 105 may be loaded with the same electrical signal.
In a specific implementation, in the touch display panel provided by the embodiment of the present invention, as shown in fig. 1 to 3, in order to improve the touch sensitivity, the touch electrode layer 106 may include: two layers of grid-shaped touch electrodes are overlapped. In addition, as shown in fig. 3, in order to improve the touch sensitivity and ensure the display quality, the mesh points of each grid-shaped touch electrode may be located in the area where the mesh points of the black matrix layer 103 are located, and the two layers of grid-shaped touch electrodes are staggered in the overlapping direction (the left-right direction as shown in fig. 3), where the grid shape of the grid-shaped touch electrode is diamond. In addition, as can be seen from fig. 3, the overlapping area of the shielding electrode 104 with the grid-shaped touch electrode in the area where the pattern of the black matrix layer 103 is located is very small, so that parasitic capacitance between the shielding electrode 104 and the grid-shaped touch electrode is effectively avoided electrically, and the increase of the resistance-capacitance load (RC loading) of the grid-shaped touch electrode is prevented.
Generally, in the touch display panel provided by the embodiment of the present invention, two layers of overlapped grid-shaped touch electrodes included in the touch electrode layer 106 are insulated from each other, for example, the insulation between the two layers may be achieved by disposing the first insulating layer 107 therebetween, as shown in fig. 1 and 2.
Specifically, in the touch display panel provided by the embodiment of the present invention, the touch display panel may further include: and a color resist layer disposed on a side of the black matrix layer 103 facing away from the upper substrate 101. As shown in fig. 1 and 2, the color resist layer is specifically shown to include red color resist R, green color resist G, and blue color resist B. In specific implementations, the color resist layer may further include a yellow color resist Y, a white color resist W, and the like, which are not limited herein.
Generally, in the touch display panel provided by the embodiment of the present invention, to increase the adhesion of the upper substrate 101, the touch display panel may further include: a second insulating layer 108 is disposed between the upper substrate 101 and the touch electrode layer 106, as shown in fig. 1 and 2.
Further, in the touch display panel provided by the embodiment of the present invention, as shown in fig. 1 and fig. 2, a third insulating layer 109 may be further disposed on a side of the touch electrode layer 106 facing away from the upper substrate 101, so as to protect the touch electrode layer 106.
In addition, in the touch display panel provided by the embodiment of the present invention, as shown in fig. 1 and fig. 2, to implement a display function, the touch display panel may further include: and a polarizer 110 positioned on one side of the third insulating layer 109 away from the touch electrode layer 106.
Generally, in the touch display panel provided by the embodiment of the present invention, as shown in fig. 1 and fig. 2, the touch display panel may further include: the protective cover 111 is disposed on a side of the polarizer 110 facing away from the third insulating layer 109 to protect the internal components of the touch display panel.
Generally, in the touch display panel provided by the embodiment of the present invention, as shown in fig. 1 and fig. 2, the touch display panel may further include: the optically transparent resin layer 112 is disposed between the protective cover 111 and the polarizer 110 to improve the contrast of the touch display panel.
Correspondingly, the embodiment of the invention also provides a manufacturing method of part of elements in the touch display panel, which comprises the following steps:
step 1, patterning a shielding electrode 104 which is made of metal material and has a grid structure on an upper substrate 101;
step 2, sequentially patterning a black matrix layer 103 and a color resistance layer comprising red color resistance R, green color resistance G and blue color resistance B on one side of the shielding electrode 104 away from the upper substrate 101; wherein the pattern of the black matrix layer 103 covers the pattern of the shielding electrode 104;
step 3, forming a second insulating layer 108 on one side of the upper substrate 101 away from the shielding electrode 104;
step 4, patterning one side of the second insulating layer 108 away from the upper substrate 101 to form a metal grid-shaped touch electrode in the touch electrode layer 106; it should be noted that, in the touch scheme of carrying the active stylus, the metal grid-shaped touch electrode can be a touch driving electrode or a touch sensing electrode; in the scheme of adopting fingers to perform touch control, the metal grid-shaped touch control electrode is generally used as a touch control driving electrode;
step 5, forming a first insulating layer 107 on one side of the metal grid-shaped touch electrode, which is away from the second insulating layer 108;
step 6, forming another metal grid-shaped touch electrode in the touch electrode layer 106 on one side of the first insulating layer 107 away from the upper substrate 101; it should be noted that, in the touch scheme of carrying the active stylus, the metal grid-shaped touch electrode can be a touch driving electrode or a touch sensing electrode; in the scheme of adopting fingers to perform touch control, the metal grid-shaped touch electrode is generally used as a touch sensing electrode;
in step 7, a third insulating layer 109 is formed on a side of the touch electrode layer 106 facing away from the upper substrate 101 to protect the touch electrode layer 106.
It can be understood that in the above manufacturing method, the shielding electrode 104, the black matrix layer 103 and the color resist layer on one side of the upper substrate 101 are sequentially manufactured, and then the second insulating layer, the metal grid-shaped touch electrode, the first insulating layer, the metal grid-shaped touch electrode and the third insulating layer on the other layer of the upper substrate 101 are sequentially manufactured; in the actual manufacturing process, the second insulating layer, the metal grid-shaped touch electrode, the first insulating layer, the metal grid-shaped touch electrode and the third insulating layer may be sequentially manufactured on one side of the upper substrate, and then the shielding electrode 104, the black matrix layer 103 and the color resistance layer may be sequentially manufactured on the other side of the upper substrate, which is not limited herein.
In the above manufacturing method provided by the embodiment of the present invention, the patterning process involved in forming each layer of structure may include not only a part or all of the process procedures of deposition, photoresist coating, mask masking, exposure, development, etching, photoresist stripping, and the like, but also other process procedures, specifically, the process of forming a pattern of a desired pattern in an actual manufacturing process is not limited herein. For example, a post bake process may also be included after development and before etching.
The deposition process may be a chemical vapor deposition method, a plasma enhanced chemical vapor deposition method or a physical vapor deposition method, which is not limited herein; the Mask used in the Mask process may be a halftone Mask (Half Tone Mask), a Single Slit diffraction Mask (Single Slit Mask) or a Gray Tone Mask (Gray Tone Mask), which are not limited herein; the etching may be dry etching or wet etching, and is not limited herein.
Based on the same inventive concept, the embodiment of the invention also provides a display device, including the touch display panel provided by the embodiment of the invention, where the display device may be: any product or component with display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, a smart watch, a body-building wristband, a personal digital assistant, and the like. The implementation of the display device can be referred to the embodiments of the touch display panel, and the repetition is not repeated.
The touch display panel and the display device provided by the embodiment of the invention comprise: the display device comprises an upper substrate, a lower substrate, a black matrix layer arranged on one side of the upper substrate facing the lower substrate, and a shielding electrode arranged between the upper substrate and the black matrix layer, wherein the shielding electrode is at least arranged in a region where a pattern of the black matrix layer is located. Based on the fact that the touch screen is arranged on one side, away from the black matrix layer, of the upper substrate, the display signals loaded in the liquid crystal screen with the black matrix layer can be shielded by using the shielding electrode arranged between the upper substrate and the black matrix layer, interference of the display signals on touch signals loaded in the touch screen is avoided, and touch accuracy is improved. Meanwhile, the shielding electrode is arranged at least in the region where the pattern of the black matrix layer is located, so that the influence of the shielding electrode on the pixel aperture opening ratio in the liquid crystal screen is avoided.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (6)
1. The utility model provides a touch display panel, includes upper substrate and lower base plate of relative setting, set up in upper substrate is towards the black matrix layer of lower base plate one side, its characterized in that still includes:
the shielding electrode is positioned between the upper substrate and the black matrix layer and is at least arranged in the area where the pattern of the black matrix layer is positioned;
the touch display panel further includes: a touch electrode layer; a common electrode disposed between the upper substrate and the lower substrate; the shielding electrode and the common electrode are loaded with the same electric signal;
the touch electrode layer includes: two layers of grid-shaped touch electrodes which are overlapped;
the mesh points of the grid-shaped touch electrodes are all located in the area where the mesh points of the black matrix layer are located;
the two layers of grid-shaped touch electrodes are staggered in the overlapping direction;
the touch display panel further includes: the first insulating layer is positioned between the grid-shaped touch electrodes; a second insulating layer located between the upper substrate and the touch electrode layer; the third insulating layer is arranged on one side of the touch electrode layer, which is away from the upper substrate.
2. The touch display panel according to claim 1, wherein the shielding electrode is made of a metal material, and the shielding electrode has a grid structure located in a region where the pattern of the black matrix layer is located.
3. The touch display panel according to claim 1, wherein the shielding electrode is made of transparent conductive material, and the shielding electrode is integrally disposed on a side of the upper substrate facing the black matrix layer.
4. The touch display panel of claim 1, wherein the mesh shape of the mesh-like touch electrode is diamond-shaped.
5. The touch display panel of any one of claims 1-4, further comprising: and the color resistance layer is arranged on one side of the black matrix layer, which is away from the upper substrate.
6. A display device comprising a touch display panel according to any one of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910675438.2A CN110362235B (en) | 2019-07-25 | 2019-07-25 | Touch display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910675438.2A CN110362235B (en) | 2019-07-25 | 2019-07-25 | Touch display panel and display device |
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| CN110362235A CN110362235A (en) | 2019-10-22 |
| CN110362235B true CN110362235B (en) | 2024-03-19 |
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| CN111443511A (en) * | 2020-04-16 | 2020-07-24 | 深圳市华星光电半导体显示技术有限公司 | Self-capacitance touch display panel and driving method thereof |
| CN111488079A (en) * | 2020-04-24 | 2020-08-04 | 信利（惠州）智能显示有限公司 | Oncell touch module |
| CN114020167B (en) * | 2021-10-28 | 2024-07-02 | Tcl华星光电技术有限公司 | Touch display panel and display device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713792A (en) * | 2013-12-23 | 2014-04-09 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method thereof and touching display device |
| CN103793120A (en) * | 2014-01-28 | 2014-05-14 | 北京京东方光电科技有限公司 | In cell touch panel and display device |
| CN104216584A (en) * | 2014-06-24 | 2014-12-17 | 京东方科技集团股份有限公司 | Touch display panel and display device |
| CN106200101A (en) * | 2016-09-06 | 2016-12-07 | 昆山龙腾光电有限公司 | Colored filter substrate and manufacture method and display panels |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101050348B1 (en) * | 2004-05-31 | 2011-07-19 | 엘지디스플레이 주식회사 | Transverse electric field liquid crystal display device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103713792A (en) * | 2013-12-23 | 2014-04-09 | 京东方科技集团股份有限公司 | Array substrate, manufacturing method thereof and touching display device |
| CN103793120A (en) * | 2014-01-28 | 2014-05-14 | 北京京东方光电科技有限公司 | In cell touch panel and display device |
| CN104216584A (en) * | 2014-06-24 | 2014-12-17 | 京东方科技集团股份有限公司 | Touch display panel and display device |
| CN106200101A (en) * | 2016-09-06 | 2016-12-07 | 昆山龙腾光电有限公司 | Colored filter substrate and manufacture method and display panels |
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