CN210199718U - Oncell touch display module - Google Patents
Oncell touch display module Download PDFInfo
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- CN210199718U CN210199718U CN201920558839.5U CN201920558839U CN210199718U CN 210199718 U CN210199718 U CN 210199718U CN 201920558839 U CN201920558839 U CN 201920558839U CN 210199718 U CN210199718 U CN 210199718U
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Abstract
The utility model provides an Oncell touch display panel, including liquid crystal display panel and touch control conducting layer, the touch control conducting layer is made on the liquid crystal display panel; the liquid crystal display panel is provided with a first shadow eliminating coating film, a touch control conducting layer is manufactured on the first shadow eliminating coating film, and a second shadow eliminating coating film covers the touch control conducting layer. The Oncell structure touch display module of the utility model can realize the shadow elimination of the patterns of the touch conductive layer by arranging the first shadow elimination coating film on the liquid crystal display panel, manufacturing the touch conductive layer on the first shadow elimination coating film and covering the second shadow elimination coating film on the touch conductive layer; the pattern space of the touch conductive layer does not need to be set to be too small, and the requirement on equipment is not high, so that the manufacturing cost can be reduced.
Description
Technical Field
The utility model relates to a mainly relate to the demonstration field of intelligent product, more specifically relate to an Oncell touch display module assembly.
Background
The existing Oncell touch display module is to directly manufacture a touch conductive layer on a liquid crystal display panel, the touch conductive layer is generally manufactured by magnetron sputtering coating, and because the liquid crystal display panel has liquid crystal, high-temperature coating cannot be used during magnetron sputtering coating when the touch conductive layer is manufactured, the touch layer of the touch conductive layer can only be coated at low temperature. When the film is coated at low temperature, the thickness of the touch conductive layer is as high as more than 100 nm. When the pattern pitch of the touch conductive layer is too large, the bottom shadow is obvious and cannot meet the user requirement. In order to ensure that the pattern of the touch conductive layer has no background shadow, the pattern pitch of the touch conductive layer needs to be below 10um, which has extremely high requirements on production line equipment, and further causes the cost to be increased.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a modified Oncell structure touch display module assembly not only can avoid the end shadow obvious, still need not accomplish below 10um with the pattern interval of touch-control conducting layer simultaneously.
The utility model provides an Oncell touch display panel, including liquid crystal display panel and touch control conducting layer, the touch control conducting layer is made on the liquid crystal display panel; the liquid crystal display panel is provided with a first shadow eliminating coating film, a touch control conducting layer is manufactured on the first shadow eliminating coating film, and a second shadow eliminating coating film covers the touch control conducting layer.
Further, the touch conductive layer is an ITO pattern layer.
Further, the ITO pattern layer is manufactured on the first shadow eliminating coating film in a low-temperature magnetron sputtering coating mode.
Further, the thickness of the ITO pattern layer is more than 100nm, and the pattern interval of the ITO pattern layer is more than 30 um.
Further, the first shadow eliminating coating comprises a first refractive index material layer and a second refractive index material layer which have different refractive indexes; the second shadow eliminating coating comprises a third refractive index material layer and a fourth refractive index material layer which have different refractive indexes; the liquid crystal display panel, the fourth refractive index material layer, the third refractive index material layer, the touch conductive layer, the second refractive index material layer and the first refractive index material layer are sequentially stacked from bottom to top.
Further, the first refractive index material layer is one of a silicon nitride layer, a niobium pentoxide layer and a mixed material layer of silicon nitride and niobium pentoxide; the second refractive index material layer is a silicon dioxide layer; the third refractive index material layer is a silicon dioxide layer; the fourth refractive index material layer is one of a silicon nitride layer, a niobium pentoxide layer and a mixed material layer of silicon nitride and niobium pentoxide.
Further, the thicknesses of the first refractive index material layer, the second refractive index material layer, the third refractive index material layer and the fourth refractive index material layer are respectively 10-40 nm.
Furthermore, a glass cover plate is laminated on the touch conductive layer.
Further, an AR anti-reflection antireflection film is arranged on the cover plate.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the Oncell structure touch display module of the utility model can realize the shadow elimination of the patterns of the touch conductive layer by arranging the first shadow elimination coating film on the liquid crystal display panel, manufacturing the touch conductive layer on the first shadow elimination coating film and covering the second shadow elimination coating film on the touch conductive layer; the pattern space of the touch conductive layer does not need to be set to be too small, and the requirement on equipment is not high, so that the manufacturing cost can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of an Oncell touch display panel according to an embodiment of the present invention;
fig. 2 is a cross-sectional view of an Oncell touch display panel according to an embodiment of the present invention;
fig. 3 is a schematic diagram of an Oncell structure touch display panel with four-layer structure shadow eliminating layers according to an embodiment of the present invention.
Reference numerals:
the touch screen comprises a liquid crystal display panel, a touch control conducting layer, a first shadow eliminating coating, a second shadow eliminating coating, a third refractive index material layer, a fourth refractive index material layer, a first refractive index material layer, a 42-second refractive index material layer and a cover plate, wherein the liquid crystal display panel comprises 10 parts, 20 parts, a first shadow eliminating coating, 30 parts, the touch control conducting layer, 40 parts, the.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 to fig. 3 are drawings of the embodiment of the present invention.
The embodiment of the utility model provides an Oncell structure touch display panel, including liquid crystal display panel 10 and touch-control conducting layer 30, this touch-control conducting layer 30 is the preparation on liquid crystal display panel 10, for example makes on liquid crystal display panel 10 through the method of magnetron sputtering coating film, and the non-direct attached is on liquid crystal display panel 10.
The liquid crystal display panel 10 includes a display screen and a backlight module, and the display screen includes an upper substrate, a lower substrate, and a liquid crystal layer between the upper substrate and the lower substrate. The display panel typically further includes an upper polarizer and a lower polarizer. The backlight module comprises a frame and a backlight element.
In the present embodiment, the touch conductive layer 30 is an ITO pattern layer. The ITO pattern layer is manufactured on the display screen in a low-temperature magnetron sputtering coating mode. Low-temperature magnetron sputtering coating is a prior art, and a method for formally performing low-temperature sputtering coating on an organic substrate is disclosed in patent CN 201110412188.7.
The thickness of the ITO pattern layer manufactured by the low-temperature magnetron sputtering coating mode is more than 100nm, and in order to avoid obvious bottom shadow, the pattern pitch of the ITO pattern layer is generally required to be less than 10um in the prior art.
As a specific improvement of this embodiment, before the ITO pattern layer is manufactured by magnetron sputtering coating, a bottom layer is coated on the liquid crystal display panel 10, and the bottom layer is the first shadow eliminating coating film 20. Then, an ITO pattern layer is manufactured on the first shadow eliminating coating film 20 through magnetron sputtering coating, and then a second shadow eliminating coating film 40 is coated on the ITO pattern layer in a coating mode to cover the ITO pattern layer.
In this embodiment, the first shadow eliminating coating 20 is disposed on the liquid crystal display panel 10, the touch conductive layer 30 is formed on the first shadow eliminating coating 20, and the second shadow eliminating coating 40 is covered on the touch conductive layer 30, so that the reflectivity between the visible light regions (450 nm-700 nm) is close to the reflectivity of the touch conductive layer 30, and the effect of no bottom shadow of the pattern of the touch conductive layer 30 is achieved.
In the improved Oncell touch display panel, the pattern pitch of the ITO pattern layer does not need to be less than 10um, and the effect that the pattern of the touch conductive layer 30 has no bottom shadow can be achieved. The pattern pitch of the ITO pattern layer can be more than 30um, and the ITO pattern layer with the pattern pitch has no high requirement on equipment, so the manufacturing cost can be reduced.
It is understood that the first and second shadow films 20 and 40 are formed by low-temperature deposition.
The touch conductive layer 30 further includes an FPC flexible printed circuit, and the positions where the pins of the ITO pattern layer need to be connected to the FPC may be hollowed out in other manners.
In the present embodiment, the first and second shadow films 20 and 40 are formed by low-temperature deposition. The conventional sputtering coating shadow eliminating coating layer has a temperature generally about 150 ℃, and the scheme of the embodiment is that the conventional sputtering coating shadow eliminating coating layer is used on the liquid crystal display panel 10, and the temperature of the liquid crystal display panel 10 needs to be controlled below 100 ℃ during sputtering coating, which is lower than the conventional coating temperature.
The material of the shadow eliminating coating layer is not limited to a mixed material of silicon nitride, silicon dioxide, niobium pentoxide and the like.
In the present embodiment, the first shadow film 20 includes a double-layer film composed of a first refractive index material layer 41 and a second refractive index material layer 42 having different refractive indexes. The second shadow-eliminating coating 40 includes a double-layer film layer composed of a third refractive index material layer 21 and a fourth refractive index material layer 22 having different refractive indexes. The first and second shadow-eliminating coating films 20 and 40 constitute a shadow-eliminating layer having a four-layer structure.
In the present embodiment, the touch conductive layer 30 is further laminated with a cover plate 50, for example, the cover plate 50 is a glass cover plate 50.
In one embodiment, as shown in fig. 3, the stacking sequence from bottom to top is: the liquid crystal display device comprises a liquid crystal display panel 10, a fourth refractive index material layer 22, a third refractive index material layer 21, a touch conductive layer 30, a second refractive index material layer 42, a first refractive index material layer 41 and a glass cover plate 50.
It is known that the refractive index of silicon dioxide is about 1.49, the refractive index of silicon nitride layer is about 2.0, the refractive index of niobium pentoxide layer is about 2.3, and the refractive index of the mixed material layer of silicon nitride and niobium pentoxide is between 2.0-2.3. The glass cover plate 50 has a refractive index of about 1.52, the liquid crystal display panel 10 has a refractive index of about 1.52, and the ITO pattern layer has a refractive index of about 1.82.
Preferably, as shown in fig. 3, the second refractive index material layer 42 includes a silicon dioxide layer, the first refractive index material layer 41 may be a silicon nitride layer, or a niobium pentoxide layer, or a mixed material layer of silicon nitride and niobium pentoxide, the first refractive index material layer 41 is a high refractive index material layer, and the second refractive index material layer 42 is a low refractive index material layer. Preferably, the third refractive index material layer 21 includes a silicon dioxide layer, the fourth refractive index material layer 22 may be a silicon nitride layer, or a niobium pentoxide layer, or a mixed material layer of silicon nitride and niobium pentoxide, the fourth refractive index material layer 22 is a high refractive index material layer, and the third refractive index material layer 21 is a low refractive index material layer.
The touch conductive layer 30 includes an ITO pattern region and a non-ITO pattern region.
In the ITO pattern region of touch-control conducting layer 30, each layer of high low refractive index material from the bottom up arranges the setting in proper order in pairs, and the shadow effect that disappears is better: from bottom to top, the liquid crystal display panel 10 with low refractive index, the fourth refractive index material layer 22 with high refractive index, the third refractive index material layer 21 with low refractive index, the ITO pattern layer with high refractive index, the second refractive index material layer 42 with low refractive index, the first refractive index material layer 41 with high refractive index, and the glass cover plate 50 with low refractive index are arranged in sequence. When a human eye looks at the touch display panel of the ITO pattern region, the order of refractive indices of the laminated structure is: the refractive index of the glass cover plate 50 is 1.52, the refractive index of the first refractive index material layer 41 is 2.0-2.3, the refractive index of the second refractive index material layer 42 is 1.49, the refractive index of the ITO pattern layer of the touch conductive layer 30 is about 1.82, the refractive index of the silica layer of the third refractive index material layer 21 is 1.49, the refractive index of the fourth refractive index material layer 22 is 2.0-2.3, and the refractive index of the liquid crystal display panel 10 is about 1.52. Therefore, the admittance curve of the laminated structure starts from 1.52 and finally returns to 1.52, so that a perfect admittance curve is formed, and the overall refractive index is 1.52 and is equivalent to that of a glass substrate. On the basis, the thickness of the touch conductive layer ITO pattern layer does not cause obvious bottom shadow.
In the non-ITO pattern region of the touch conductive layer 30, the third refractive index material layer 21 and the second refractive index material layer 42 are made of the same material and are both silica layers, so that the third refractive index material layer 21 and the second refractive index material layer 42 can be combined together to calculate a silica layer with a low refractive index, from bottom to top, the liquid crystal display panel 10 with a low refractive index, the fourth refractive index material layer 22 with a high refractive index, the silica layer with a low refractive index, the first refractive index material layer 41 with a high refractive index, and the glass cover plate 50 with a low refractive index are sequentially arranged, and a perfect admittance curve is also formed.
Therefore, no matter the ITO pattern area or the non-ITO pattern area is provided, the high-refractive index and low-refractive index materials of each layer are arranged in sequence, and therefore the shadow eliminating effect is good.
The thicknesses of the shadow mask layers are matched according to the thicknesses of the different ITO pattern layers, and in the embodiment, the thicknesses of the first refractive index material layer 41, the second refractive index material layer 42, the third refractive index material layer 21 and the fourth refractive index material layer 22 are respectively 10-40 nm.
More preferably, an AR (anti-reflection) antireflection film is provided on the cover plate 50. The antireflection film can improve the transmittance and reduce the reflectivity of the screen cover plate 50.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the Oncell structure touch display module of the utility model can realize the shadow elimination of the patterns of the touch conductive layer by arranging the first shadow elimination coating film on the liquid crystal display panel, manufacturing the touch conductive layer on the first shadow elimination coating film and covering the second shadow elimination coating film on the touch conductive layer; the pattern space of the touch conductive layer does not need to be set to be too small, and the requirement on equipment is not high, so that the manufacturing cost can be reduced.
It will be understood that modifications and variations can be made by those skilled in the art in light of the above teachings, and all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (10)
1. An Oncell touch display module comprises a liquid crystal display panel and a touch conductive layer, and is characterized in that the touch conductive layer is manufactured on the liquid crystal display panel; the liquid crystal display panel is provided with a first shadow eliminating coating film, a touch control conducting layer is manufactured on the first shadow eliminating coating film, and a second shadow eliminating coating film covers the touch control conducting layer.
2. The Oncell touch display module of claim 1, wherein the touch electrode layer is an ITO pattern layer.
3. The Oncell touch display module of claim 2, wherein the ITO pattern layer is formed on the first shadow mask by low temperature magnetron sputtering.
4. The Oncell touch display module of claim 2, wherein the thickness of the ITO pattern layer is more than 100nm, and the pattern pitch of the ITO pattern layer is greater than 30 um.
5. The Oncell touch display module of claim 1, wherein the first shadow mask comprises a first refractive index material layer and a second refractive index material layer having different refractive indices; the second shadow eliminating coating comprises a third refractive index material layer and a fourth refractive index material layer which have different refractive indexes.
6. The Oncell touch display module of claim 5, wherein the first refractive index material layer is one of a silicon nitride layer, a niobium pentoxide layer, and a mixed material layer of silicon nitride and niobium pentoxide; the second refractive index material layer is a silicon dioxide layer.
7. The Oncell touch display module of claim 5, wherein the third layer of refractive index material comprises a silicon oxide layer and the fourth layer of refractive index material comprises a silicon nitride layer, a niobium pentoxide layer, or a mixed material layer of silicon nitride and niobium pentoxide.
8. The Oncell touch display module of claim 5, wherein the first, second, third, and fourth layers of material have thicknesses between 10-40nm, respectively.
9. The Oncell touch display module of claim 1, wherein the touch electrode layer is further laminated with a cover plate.
10. The Oncell touch display module of claim 1, wherein the cover plate is provided with an AR anti-reflective antireflection coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920558839.5U CN210199718U (en) | 2019-04-23 | 2019-04-23 | Oncell touch display module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920558839.5U CN210199718U (en) | 2019-04-23 | 2019-04-23 | Oncell touch display module |
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| CN210199718U true CN210199718U (en) | 2020-03-27 |
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| CN201920558839.5U Active CN210199718U (en) | 2019-04-23 | 2019-04-23 | Oncell touch display module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610661A (en) * | 2020-06-30 | 2020-09-01 | 上海天马微电子有限公司 | Display device and preparation method thereof |
| CN112764587A (en) * | 2021-02-06 | 2021-05-07 | 业成科技（成都）有限公司 | Touch module and touch display module |
-
2019
- 2019-04-23 CN CN201920558839.5U patent/CN210199718U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610661A (en) * | 2020-06-30 | 2020-09-01 | 上海天马微电子有限公司 | Display device and preparation method thereof |
| CN111610661B (en) * | 2020-06-30 | 2022-07-08 | 上海天马微电子有限公司 | Display device and preparation method thereof |
| CN112764587A (en) * | 2021-02-06 | 2021-05-07 | 业成科技（成都）有限公司 | Touch module and touch display module |
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