CN212160641U - Display panel - Google Patents
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- CN212160641U CN212160641U CN202021183883.1U CN202021183883U CN212160641U CN 212160641 U CN212160641 U CN 212160641U CN 202021183883 U CN202021183883 U CN 202021183883U CN 212160641 U CN212160641 U CN 212160641U
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- 239000010410 layer Substances 0.000 claims abstract description 312
- 230000003287 optical effect Effects 0.000 claims abstract description 65
- 239000012790 adhesive layer Substances 0.000 claims abstract description 59
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 57
- 239000011521 glass Substances 0.000 claims abstract description 44
- 239000000463 material Substances 0.000 claims description 46
- 229910004205 SiNX Inorganic materials 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 6
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Inorganic materials O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- 230000003667 anti-reflective effect Effects 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
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- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
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- 230000000391 smoking effect Effects 0.000 description 7
- 230000000007 visual effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
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Images
Abstract
A display panel comprises a glass cover plate, a liquid crystal display module and a multilayer film structure. The multilayer film structure is arranged between the glass cover plate and the liquid crystal display module. The multilayer film structure sequentially comprises a first refraction layer, an ink layer, a second refraction layer and an optical adhesive layer. The first refractive layer has a high refractive index and is disposed adjacent to the glass cover plate. The ink layer is disposed adjacent to the first refractive layer to define a non-visible area. The second refraction layer has a middle refractive index, is arranged in the non-visible area and close to the ink layer, and is arranged close to the first refraction layer to define a visible area, wherein the non-visible area surrounds the visible area. The optical adhesive layer is arranged between the second refraction layer and the liquid crystal display module. By using the multilayer film structure, a black-in-one effect can be achieved in which the visible region or the non-visible region is not visibly clearly separated.
Description
Technical Field
The utility model relates to a display panel, in particular to can reduce the display panel of the difference of visible region and non-visible interval reflection brightness value through multilayer film structure.
Background
The structure of a general display module with a protective cover plate is from top to bottom: a protective cover plate (glass or plastic), an Optical Clear Adhesive (OCA or Optical Clear Resin, OCR), and a Liquid Crystal Display Module (LCM). And the touch display module structure of the protective cover plate is from top to bottom: a protective cover (glass or plastic), OCA1 (or OCR1), Touch sensor (Touch sensor), OCA 2 (or OCR2), and LCM.
In order to reduce the reflectivity of the display module, an Anti-Reflection layer (AR layer) is usually formed on the protective cover, and the Anti-Reflection layer is an Evaporation process (Evaporation process), so that the Reflection brightness value (luminance value) of the visible region and the non-visible region of the display module is reduced synchronously under the influence of the Anti-Reflection layer, thereby achieving the effect of reducing the reflectivity.
However, even though the brightness values of the visible region and the non-visible region are reduced synchronously by the above-mentioned fabrication of the anti-reflection layer, the brightness value of the non-visible region is generally lower than that of the visible region, and if the brightness value of the non-visible region is to be black (the hue of the visible region and the non-visible region is similar to that of the non-display region of the display module, and there is no obvious difference when the display module is viewed by naked eyes), two methods are mainly used, one is to use smoke material (e.g. smoke protective cover plate) or smoke OCA. The other is that a Polarizer (Polarizer) is attached under the protective cover plate (glass or plastic), and the two methods are both to reduce the brightness value of the visible region to reduce the difference between the brightness value of the visible region and the brightness value of the non-visible region, so as to achieve an integral black effect and reduce the surface reflectivity. The integral black referred to herein is evaluated as a result of calculation of Color difference (Delta E), and the smaller the value of Delta E, the better the effect of representing the integral black.
However, in the conventional method, whether smoking materials (smoking materials) are used or a polarizer is attached below the protective cover plate to reduce the brightness value of the visible region, the difference between the brightness value of the visible region and the brightness value of the non-visible region is reduced, so that the transmittance of the visible region is sacrificed, the brightness of the visible region is dark, and the user feels poor, or unsuitable smoking materials or polarizers are used, and the effect of black integration is also poor.
SUMMERY OF THE UTILITY MODEL
In view of the above, in one embodiment, the present invention provides a display panel including a glass cover plate, a liquid crystal display module and a multilayer film structure. The multilayer film structure is arranged between the glass cover plate and the liquid crystal display module. The multilayer film structure comprises, in order: the optical film comprises a first refraction layer, an ink layer, a second refraction layer and an optical adhesive layer. The first refractive layer has a high refractive index and is disposed adjacent to the glass cover plate. The ink layer is disposed adjacent to the first refractive layer to define a non-visible area. The second refraction layer has a middle refractive index, is arranged in the non-visible area and close to the ink layer, and is arranged close to the first refraction layer to define a visible area, wherein the non-visible area surrounds the visible area. The optical adhesive layer is arranged between the second refraction layer and the liquid crystal display module.
The display panel is provided with the multilayer film structure between the glass cover plate and the liquid crystal display module to replace a smoking material which is usually used in the prior art or a polaroid which is attached below the protective cover plate. By providing the first refractive layer having a refractive index different from that of the ink layer and having a high refractive index in the non-visible region, the luminance value in the non-visible region can be increased. In the visible area, although the brightness value is increased by the arrangement of the first refraction layer, the brightness value of the visible area can be reduced by arranging the second refraction layer with the middle refractive index and the optical adhesive layer (the optical adhesive layer has the low refractive index), so that the difference value between the brightness values of the visible area and the non-visible area is reduced. Therefore, the integral black effect that no matter the visible area or the non-visible area of the whole display panel is not opened for display, no obvious separation is visually generated can be achieved. By using the multilayer film structure, smoking materials or polaroids do not need to be used, and the material cost can be greatly saved.
In one embodiment, the display panel further includes a third refractive layer having a low refractive index and disposed adjacent to the first refractive layer.
In one embodiment, the first refractive layer is made of TiO2Or Nb2O5The material for forming the second refraction layer is SiNxThe material for forming the third refraction layer is SiO2。
In one embodiment, the display panel further includes an anti-reflection layer disposed adjacent to the glass cover plate and on the other side opposite to the multilayer film structure.
In one embodiment, the display panel further includes a touch sensing layer and another optical adhesive layer disposed between the optical adhesive layer and the liquid crystal display module, the touch sensing layer is disposed adjacent to the optical adhesive layer, and the another optical adhesive layer is disposed between the touch sensing layer and the liquid crystal display module.
In addition, the present invention provides a display panel in another embodiment, which includes a glass cover plate, a liquid crystal display module and a multilayer film structure. The multilayer film structure is arranged between the glass cover plate and the liquid crystal display module. The multilayer film structure sequentially comprises a first refraction layer, a second refraction layer, an ink layer, a third refraction layer, a fourth refraction layer and an optical adhesive layer. The first refractive layer has a high refractive index and is disposed adjacent to the glass cover plate. The second refractive layer has a middle refractive index and is disposed adjacent to the first refractive layer. The ink layer is disposed adjacent to the second refraction layer to define a non-visible area. The third refractive layer has a high refractive index. The third refraction layer is arranged in the non-visible area and close to the ink layer, and is arranged close to the second refraction layer to define the visible area. Wherein the non-viewable area surrounds the viewable area. The fourth refractive layer has a medium refractive index and is disposed adjacent to the third refractive layer. The optical adhesive layer is arranged between the fourth refraction layer and the liquid crystal display module.
Therefore, the difference of the brightness values between the visible area and the non-visible area can be adjusted more finely by using the multilayer film structure with the four refraction layers, so that the difference of the brightness values between the visible area and the non-visible area is smaller, and the integral black visual effect is better. And the multilayer film structure with four refraction layers can further adjust the presented reflection chromatic value, so that the whole color is more consistent without having the feeling of being more inclined to which color.
In one embodiment, the first refractive layer and the third refractive layer are made of SiN with a refractive index of about 1.9xThe second and fourth refractive layers are made of SiN with a refractive index of about 1.7xThereby forming the composite material.
In one embodiment, the display panel further includes a touch sensing layer and another optical adhesive layer disposed between the optical adhesive layer and the liquid crystal display module, the touch sensing layer is disposed adjacent to the optical adhesive layer, and the another optical adhesive layer is disposed between the touch sensing layer and the liquid crystal display module.
Furthermore, in another embodiment of the present invention, a display panel includes a glass cover plate, a liquid crystal display module and a multilayer film structure. The multilayer film structure is arranged between the glass cover plate and the liquid crystal display module. The multilayer film structure sequentially comprises a first refraction layer, a second refraction layer, an ink layer, a third refraction layer and an optical adhesive layer. The first refractive layer has a medium refractive index and is disposed adjacent to the glass cover plate. The second refractive layer has a low refractive index and is disposed adjacent to the first refractive layer. The ink layer is disposed adjacent to the second refraction layer to define a non-visible area. The third refractive layer has a medium refractive index. The third refraction layer is arranged in the non-visible area and close to the ink layer, and is arranged close to the second refraction layer to define the visible area. Wherein the non-viewable area surrounds the viewable area. The optical adhesive layer is arranged between the third refraction layer and the liquid crystal display module.
Therefore, the difference of the brightness values between the visible area and the non-visible area can be adjusted more finely by using the multilayer film structure with three refraction layers than the multilayer film structure with two refraction layers, so that the difference of the brightness values between the visible area and the non-visible area is smaller, and the integral black visual effect is better. And the multilayer film structure with three refraction layers can further adjust the presented reflection chromatic value, so that the whole color is more consistent without having the feeling of being more inclined to the color.
In one embodiment, the first refractive layer and the third refractive layer are made of SiN with a refractive index of about 1.8xThe second refractive layer is formed of SiO having a refractive index of about 1.52Thereby forming the composite material.
In one embodiment, the display panel further includes a touch sensing layer and another optical adhesive layer disposed between the optical adhesive layer and the liquid crystal display module, the touch sensing layer is disposed adjacent to the optical adhesive layer, and the another optical adhesive layer is disposed between the touch sensing layer and the liquid crystal display module.
The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical content of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art from the disclosure of the present specification, the claims and the attached drawings.
Drawings
Fig. 1 is a schematic cross-sectional view of a display panel according to a first embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a display panel according to a second embodiment of the present invention;
fig. 3 is a schematic cross-sectional view of a display panel according to a third embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a display panel according to a fourth embodiment of the present invention;
fig. 5 is a schematic cross-sectional view of a display panel according to a fifth embodiment of the present invention;
fig. 6 is a schematic cross-sectional view of a display panel according to a sixth embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a display panel according to a seventh embodiment of the present invention; and
fig. 8 is a schematic cross-sectional view of a display panel according to an eighth embodiment of the present invention.
Description of reference numerals:
100. 101, 102, 103, 104, 105, 106, 107 display panel
10 anti-reflection layer
20 glass cover plate
30 liquid crystal display module
40. 70, 80 multilayer film structure
41. 71, 81 first refractive layer
43. 72, 82 second refractive layer
45. 74, 84 third refractive layer
75 fourth refractive layer
42. 73, 83 ink layer
44. 76, 85 optical glue layer
50 touch sensing layer
60 Another optical adhesive layer
Visual area of A1
A2 non-visible area
Detailed Description
Referring to fig. 1, fig. 1 is a schematic cross-sectional view of a display panel according to a first embodiment of the present invention. The display panel 100 of the present embodiment includes an anti-reflection layer 10, a glass cover plate 20, a liquid crystal display module 30, and a multilayer film structure 40. The multi-layer film structure 40 is disposed between the glass cover plate 20 and the liquid crystal display module 30. An Anti-Reflection layer 10 (AR layer) is disposed adjacent to the glass cover plate 20 on the other side opposite to the multilayer film structure 40. The multilayer film structure 40 includes, in order, a first refractive layer 41, an ink layer 42, a second refractive layer 43, and an optical adhesive layer 44. The antireflection layer 10, the glass cover plate 20, the ink layer 42, the optical adhesive layer 44 and the liquid crystal display module 30 may use various materials and modules commonly used in the prior art, and are not the key point of the present invention, and therefore, they are not described in detail herein.
The first refractive layer 41 has a high refractive index and is disposed adjacent to the glass cover plate 20. Next, the ink layer 42 is disposed adjacent to the first reflective layer 41 to define a non-visible area a 2. Here, the non-visible area a2 can be defined according to actual use requirements, for example, when the mobile device is applied to a mobile device, if it is desired to form a non-display area around the display area, the non-visible area a2 is located around the display area. In addition, in the present embodiment, the human eye is set to view from above the drawing, the visible area a1 shown in fig. 1 refers to an area where the light emitted by the liquid crystal display module 30 can pass out upward and be recognized or seen by the human eye, and the non-visible area a2 refers to an area where the light emitted by the liquid crystal display module 30 is blocked by the ink layer 42 and cannot pass out upward and thus cannot be recognized or seen by the human eye.
The second refractive layer 43 has a middle refractive index. The second refraction layer 43 is disposed adjacent to the ink layer 42 in the non-visible area a2 and adjacent to the first refraction layer 41 to define a visible area a 1. The optical adhesive layer 44 is disposed between the second refractive layer 43 and the liquid crystal display module 30. In the present embodiment, the Optical Adhesive layer 44 may be formed by coating using an existing Optical Clear Adhesive (OCA) or an Optical Clear Resin (OCR).
Therefore, the display panel 100 of the present embodiment forms the multi-layer film structure 40 under the glass cover plate 20 to replace the smoking material commonly used in the conventional art or to replace the polarizer attached under the protective cover plate. Since the first refractive layer 41 having a refractive index different from that of the ink layer 42 and having a high refractive index is provided in the non-visible region a2, the luminance value (L ×) in the non-visible region a2 can be increased. Although the brightness value of the visible area a1 is increased by the arrangement of the first refractive layer 41, the brightness value of the visible area a1 is decreased by the arrangement of the second refractive layer 43 and the optical adhesive layer 44 (the optical adhesive layer has a low refractive index) with a medium refractive index, so as to reduce the difference between the brightness values of the visible area a1 and the non-visible area a 2. Therefore, no obvious separation is observed in the whole display panel 100 in the visible area a1 or the non-visible area a2 when the liquid crystal display module 30 is not turned on to emit light, and the effect of black integration is achieved. By using the multilayer film structure, smoking materials or polaroids do not need to be used, and the material cost can be greatly saved.
Further, in some embodiments, high refractive index refers to a refractive index of 1.9 to 2.2, and medium refractive index refers to a refractive index of 1.7 to 1.8. That is, a material having a refractive index of 1.9 to 2.2 may be selected for the first refractive layer 41 having a high refractive index, and a material having a refractive index of 1.7 to 1.8 may be selected for the second refractive layer 43 having a medium refractive index.
In the present embodiment, the material forming the first refraction layer 41 is TiO selected to have a refractive index of about 2.22Or Nb2O5The material forming the second refraction layer 43 is selected to have a refractive index of about 1.8 SiNx。SiNxMay be, for example, Si3N4. Due to TiO2Or Nb2O5The refractive index of the first refraction layer 41 is different from that of the ink layer 42 in the non-visible area a2, so that the reflection brightness value (brightness value) of the non-visible area a2 is increased, and the brightness difference between the visible area a1 and the non-visible area a2 is reduced. Although the first refraction layer 41 in the visible region A1 also increases the brightness value in the visible region A1, SiN is usedxThe second refraction layer 43 formed and the optical adhesive layer 44 under the second refraction layer can reduce the brightness value of the visible area A1, thereby reducing TiO2Or Nb2O5The first refraction layer 41 is formed to affect the brightness value of the visible area a1, so as to achieve the effect of black integration of the visible area a1 and the non-visible area a 2.
In addition, in the present embodiment, the thickness of the first refractive layer 41 is about 7 nm, and the thickness of the second refractive layer 43 is about 135 nm. In fact, the thickness of each layer can be designed according to other structure thickness or characteristics, for example, when ink layers 42 with different colors are coated or liquid crystal display modules 30 with different ground colors are used, the thicknesses of the first refraction layer 41 and the second refraction layer 43 can be matched with different thicknesses, so as to reduce the difference of brightness values between the visible area a1 and the non-visible area a2, and simultaneously, adjust the overall reflection chromatic value, so that the color is uniform and not biased to specific color light.
Referring to fig. 2, fig. 2 is a schematic cross-sectional view of a display panel according to a second embodiment of the present invention. The same elements and structures of the display panel 101 shown in fig. 2 as those of the display panel 100 of the first embodiment are denoted by the same reference numerals and are not repeated herein. The difference between the present embodiment and the first embodiment is that the display panel 101 further includes a touch sensing layer 50 and another optical adhesive layer 60, wherein the touch sensing layer 50 is disposed adjacent to the optical adhesive layer 44, and the another optical adhesive layer 60 is disposed between the touch sensing layer 50 and the liquid crystal display module 30, thereby forming the display panel 101 with a touch function.
In summary, the multi-layer film structure 40 of the present invention can be applied to not only the display panel 100 with display function but also the display panel 101 with display and touch functions. To provide an effect that the visible region a1 is black as a whole with the non-visible region a2 when in the non-display state.
Referring to fig. 3, fig. 3 is a schematic cross-sectional view of a display panel according to a third embodiment of the present invention. The elements and structures of the display panel 102 shown in fig. 3 that are the same as those of the display panel 100 of the first embodiment are denoted by the same reference numerals and are not repeated. The present embodiment is different from the first embodiment in that the display panel 102 further includes a third refractive layer 45. The third refractive layer 45 has a low refractive index and is disposed adjacent to the first refractive layer 41.
By stacking a material having a different refractive index from that of the ink layer 42 in the non-visible region a2, the brightness value in the non-visible region a2 can be increased. In the visible area a1, three refractive structures (where the first refractive layer 41, the third refractive layer 45, and the second refractive layer 43 are stacked) are stacked, although the luminance value increases due to the stacking of the first refractive layer 41 and the third refractive layer 45, the luminance value of the visible area a1 is decreased due to the stacking of the second refractive layer 43 and the optical adhesive layer 44, and the luminance difference between the visible area a1 and the non-visible area a2 can be reduced.
In some embodiments, low refractive index refers to a refractive index of 1.5 or less. In other words, a material having a refractive index of 1.5 or less may be selected for the third refractive layer 45 having a low refractive index.
In the present embodiment, the material forming the third refraction layer 45 is SiO2(refractive index about 1.5). Similarly, since the material has an adjustable refractive index range, the low refractive index material is not limited to the above materials as long as the required refractive index range can be met.
In addition, in the present embodiment, the thickness of the first refractive layer 41 is about 10 nm, the thickness of the second refractive layer 43 is about 35 nm, and the thickness of the third refractive layer 45 is about 40 nm. In fact, the thickness of each layer can be designed according to other structure thickness or characteristics, for example, when the ink layers 42 with different colors are coated or the liquid crystal display module 30 with different ground colors is used, the thicknesses of the first refraction layer 41, the second refraction layer 43 and the third refraction layer 45 can also be matched with different thicknesses, so as to reduce the difference of brightness values between the visible area a1 and the non-visible area a2, and simultaneously realize adjustment of the overall reflection chromatic value, so that the color is uniform and not biased to specific color light.
Next, referring to fig. 4, fig. 4 is a schematic cross-sectional view of a display panel according to a fourth embodiment of the present invention. The same elements and structures of the display panel 103 shown in fig. 4 and the display panel 102 of the third embodiment are denoted by the same reference numerals and are not repeated herein. The difference between the present embodiment and the third embodiment is that the display panel 103 further includes a touch sensing layer 50 and another optical adhesive layer 60, wherein the touch sensing layer 50 is disposed adjacent to the optical adhesive layer 44, and the another optical adhesive layer 60 is disposed between the touch sensing layer 50 and the liquid crystal display module 30, thereby forming the display panel 103 with touch function.
In summary, the multi-layer film structure 40 of the present invention can be applied to not only the display panel 102 with display function but also the display panel 103 with display and touch functions. To provide an effect that the visible region a1 is black as a whole with the non-visible region a2 when in the non-display state.
Referring to fig. 5, fig. 5 is a schematic cross-sectional view of a display panel according to a fifth embodiment of the present invention. The display panel 104 of the present embodiment includes an anti-reflection layer 10, a glass cover plate 20, a liquid crystal display module 30, and a multilayer film structure 70. The multi-layer film structure 70 is disposed between the glass cover plate 20 and the liquid crystal display module 30. The antireflective layer 10 is disposed adjacent to the glass cover sheet 20 and on the opposite side from the multilayer film structure 70. The multilayer film structure 70 includes, in order, a first refractive layer 71, a second refractive layer 72, an ink layer 73, a third refractive layer 74, a fourth refractive layer 75, and an optical glue layer 76. The antireflection layer 10, the glass cover plate 20, the ink layer 73, the optical adhesive layer 76 and the liquid crystal display module 30 may use various materials and modules that are conventionally used, and are not the key point of the present invention, and therefore, they are not described in detail herein.
The first refractive layer 71 has a high refractive index and is disposed adjacent to the glass cover plate 20. The subsequent second refractive layer 72 has a middle refractive index and is disposed adjacent to the first refractive layer 71. Next, the ink layer 73 is disposed adjacent to the second refraction layer 72 to define a non-visible area a 2.
Then, the third refractive layer 74 has a high refractive index. Third refractive layer 74 is disposed adjacent to ink layer 73 in non-visible area A2 and adjacent to second refractive layer 72 to define visible area A1. Wherein the non-viewable area a2 surrounds the viewable area a 1. Also, the fourth refractive layer 75 has a middle refractive index, and is disposed adjacent to the third refractive layer 74. And the optical adhesive layer 76 is disposed between the fourth refraction layer 75 and the liquid crystal display module 30.
In this way, the multilayer film structure 70 having four refractive layers (the first refractive layer 71, the second reflective layer 72, the third refractive layer 74, and the fourth refractive layer 75) is formed. The multilayer film structure 70 using four refractive layers can adjust the difference between the brightness values of the visible area a1 and the non-visible area a2 more finely, so that the difference between the brightness values of the visible area a1 and the non-visible area a2 is smaller, and the overall black-in-one visual effect is better. And the multilayer film structure 70 with four refraction layers can further adjust the reflected chromatic value, so that the whole color is more consistent without the feeling of being more inclined to the color light.
In addition, in some embodiments, a high refractive index in the four-refractive-layer multilayer film structure 70 means a refractive index of 1.9 to 2.2, and a medium refractive index means a refractive index of 1.7 to 1.8. For example, a material having a refractive index of 1.9-2.2 may be selected for the first and third refractive layers 71 and 74 having a high refractive index, and a material having a refractive index of 1.7-1.8 may be selected for the second and fourth refractive layers 72 and 75 having a medium refractive index. And, although the first and third refractive layers 71 and 74 are formed using a material having a high refractive index, the same material or different materials may be used for both, as long as the material used has a refractive index within a predetermined range. Similarly, the second refractive layer 72 and the fourth refractive layer 75 are formed using a material having a medium refractive index, but the same material or different materials may be used for both layers as long as the material used has a refractive index within a predetermined range.
In the present embodiment, the first refractive layer 71 and the third refractive layer 74 of the four-layer refractive-layer multilayer structure 70 are made of SiN with a refractive index of about 1.9xThe second and fourth refractive layers 72 and 75 are formed of SiN having a refractive index of about 1.7xThereby forming the composite material. As mentioned above, due to SiNxCan be adjusted to have different refractive indexes, and thus can be adjusted to have different refractive indexes by using the same material to form high refractive index SiN with the relative difference of the refractive indexes although the high refractive index SiN is the same materialx(SiN having a refractive index of about 1.9x) And medium refractive index SiNx(SiN having a refractive index of about 1.7x)。
In addition, in the present embodiment, the thickness of the first refractive layer 71 is about 10 nm, the thickness of the second refractive layer 72 is about 10 nm, the thickness of the third refractive layer 74 is about 10 nm, and the thickness of the fourth refractive layer 75 is about 105 nm. In fact, the thickness of each layer can be designed according to other structural thickness or characteristics, for example, when the ink layer 73 with different colors is coated or the liquid crystal display module 30 with different ground colors is used, the thicknesses of the first refraction layer 71, the second refraction layer 72, the third refraction layer 74 and the fourth refraction layer 75 can also be matched with different thicknesses, so as to reduce the difference of the brightness values between the visible area a1 and the non-visible area a2, and simultaneously, adjust the overall reflection chromaticity value, so that the color is uniform and not biased to specific color light.
Next, referring to fig. 6, fig. 6 is a schematic cross-sectional view of a display panel according to a sixth embodiment of the present invention. The same elements and structures of the display panel 105 shown in fig. 6 and the display panel 104 of the fifth embodiment are denoted by the same reference numerals and are not repeated herein. The difference between the present embodiment and the fifth embodiment is that the display panel 105 further includes a touch sensing layer 50 and another optical adhesive layer 60, wherein the touch sensing layer 50 is disposed adjacent to the optical adhesive layer 76, and the another optical adhesive layer 60 is disposed between the touch sensing layer 50 and the liquid crystal display module 30, thereby forming the display panel 105 with touch function.
In summary, the multi-layer film structure of the present invention can be applied to not only the display panel 104 with display function but also the display panel 105 with display and touch functions.
Referring to fig. 7, fig. 7 is a schematic cross-sectional view of a display panel according to a seventh embodiment of the present invention. The display panel 106 of the present embodiment includes an anti-reflection layer 10, a glass cover plate 20, a liquid crystal display module 30, and a multilayer film structure 80. The multi-layer film structure 80 is disposed between the glass cover plate 20 and the liquid crystal display module 30. The antireflective layer 10 is disposed adjacent to the glass cover plate 20 and on the opposite side from the multilayer film structure 80. The multilayer film structure 80 includes, in order, a first refractive layer 81, a second refractive layer 82, an ink layer 83, a third refractive layer 84, and an optical adhesive layer 85. The antireflection layer 10, the glass cover plate 20, the ink layer 83, the optical adhesive layer 85, and the liquid crystal display module 30 may use various materials and modules that are conventionally used, and are not the key points of the present invention, and therefore, they are not described in detail herein.
The first refractive layer 81 has a middle refractive index and is disposed adjacent to the glass cover plate 20. The subsequent second refractive layer 82 has a low refractive index and is disposed adjacent to the first refractive layer 81. Next, the ink layer 83 is disposed adjacent to the second refraction layer 82 to define a non-visible area a 2.
Then, the third refractive layer 84 has a medium refractive index. Third refractive layer 84 is disposed adjacent to ink layer 83 in non-visible area A2 and adjacent to second refractive layer 82 to define visible area A1. Wherein the non-viewable area a2 surrounds the viewable area a 1. And the optical adhesive layer 85 is disposed between the third refractive layer 84 and the liquid crystal display module 30.
In this manner, the multilayer film structure 80 having three refractive layers (the first refractive layer 81, the second reflective layer 82, and the third refractive layer 84) is formed. The multilayer film structure 80 using three refractive layers can adjust the difference between the brightness values of the visible area a1 and the non-visible area a2 more finely than the two refractive layers, so that the difference between the brightness values of the visible area a1 and the non-visible area a2 is smaller, and the overall black-in-one visual effect is better. And the multilayer film structure 80 with three refraction layers can further adjust the reflected chromatic value, so that the whole color is more consistent without having the feeling of being more inclined to the colored light.
In addition, in some embodiments, in the multilayer film structure 80 of three refractive layers, the medium refractive index means a refractive index of 1.7 to 1.8, and the low refractive index means a refractive index of 1.5 or less. For example, a material having a refractive index of 1.7-1.8 may be selected for the first and third refractive layers 81 and 84 having a middle refractive index, and a material having a refractive index of 1.5 or less may be selected for the second refractive layer 82 having a low refractive index. And although the first and third refractive layers 81 and 84 are formed using a material having a medium refractive index, the same material or different materials may be used for both layers as long as the material used has a refractive index within a predetermined range.
In the present embodiment, the first refractive layer 81 and the third refractive layer 84 in the three-layer multilayer structure 80 are made of SiN with a refractive index of about 1.8xThe second refractive layer 82 is formed of SiO having a refractive index of about 1.52Thereby forming the composite material.
In addition, in the present embodiment, the thickness of the first refractive layer 81 is about 25 nm, the thickness of the second refractive layer 82 is about 50 nm, and the thickness of the third refractive layer 84 is about 10 nm. In fact, the thickness of each layer can be designed according to other structural thickness or characteristics, for example, when the ink layer 83 with different colors is coated or the liquid crystal display module 30 with different ground colors is used, the thicknesses of the first refraction layer 81, the second refraction layer 82 and the third refraction layer 84 can be matched with different thicknesses, so as to reduce the difference of the brightness values between the visible area a1 and the non-visible area a2, and simultaneously realize adjustment of the overall reflection chromatic value, so that the color is uniform and not biased to specific color light.
Next, referring to fig. 8, fig. 8 is a schematic cross-sectional view of a display panel according to an eighth embodiment of the present invention. The same elements and structures of the display panel 107 shown in fig. 8 as those of the display panel 106 of the seventh embodiment are denoted by the same reference numerals and are not repeated herein. The difference between the present embodiment and the seventh embodiment is that the display panel 107 further includes a touch sensing layer 50 and another optical adhesive layer 60, wherein the touch sensing layer 50 is disposed adjacent to the optical adhesive layer 85, and the other optical adhesive layer 60 is disposed between the touch sensing layer 50 and the liquid crystal display module 30, thereby forming the display panel 107 with a touch function.
In summary, the multi-layer film structure of the present invention can be applied to not only the display panel 106 with display function but also the display panel 107 with display and touch functions.
Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (11)
1. A display panel, comprising:
a glass cover plate;
a liquid crystal display module; and
a multilayer film structure disposed between the glass cover plate and the liquid crystal display module, the multilayer film structure sequentially comprising:
a first refractive layer having a high refractive index and disposed adjacent to the glass cover plate;
an ink layer disposed adjacent to the first refraction layer to define a non-visible region;
a second refraction layer with a middle refractive index, the second refraction layer is arranged in the non-visible area and close to the ink layer, and is arranged close to the first refraction layer to define a visible area, wherein the non-visible area surrounds the visible area; and
and the optical adhesive layer is arranged between the second refraction layer and the liquid crystal display module.
2. The display panel of claim 1, wherein the display panel further comprises a third refractive layer having a low refractive index and disposed adjacent to the first refractive layer.
3. The display panel of claim 2, wherein a material forming the first refractive layer is TiO2Or Nb2O5The material for forming the second refraction layer is SiNxThe material for forming the third refraction layer is SiO2。
4. The display panel of claim 1, further comprising an anti-reflective layer disposed adjacent to the glass cover plate and on an opposite side of the multilayer film structure.
5. The display panel according to any one of claims 1 to 4, wherein the display panel further comprises a touch sensing layer and another optical adhesive layer disposed between the optical adhesive layer and the liquid crystal display module, the touch sensing layer is disposed adjacent to the optical adhesive layer, and the another optical adhesive layer is disposed between the touch sensing layer and the liquid crystal display module.
6. A display panel, comprising:
a glass cover plate;
a liquid crystal display module; and
a multilayer film structure disposed between the glass cover plate and the liquid crystal display module, the multilayer film structure sequentially comprising:
a first refractive layer having a high refractive index and disposed adjacent to the glass cover plate;
a second refractive layer having a medium refractive index and disposed adjacent to the first refractive layer;
an ink layer disposed adjacent to the second refraction layer to define a non-visible region;
a third refractive layer having the high refractive index, the third refractive layer being disposed adjacent to the ink layer in the non-visible region and adjacent to the second refractive layer to define a visible region, wherein the non-visible region surrounds the visible region;
a fourth refractive layer having the intermediate refractive index and disposed adjacent to the third refractive layer; and
and the optical adhesive layer is arranged between the fourth refraction layer and the liquid crystal display module.
7. The display panel of claim 6, wherein the first refractive layer and the third refractive layer are made of SiN with a refractive index of about 1.9xThe second and fourth refractive layers are made of SiN with a refractive index of about 1.7xThereby forming the composite material.
8. The display panel of claim 6, further comprising a touch sensing layer disposed adjacent to the optical adhesive layer and another optical adhesive layer disposed between the touch sensing layer and the liquid crystal display module.
9. A display panel, comprising:
a glass cover plate;
a liquid crystal display module; and
a multilayer film structure disposed between the glass cover plate and the liquid crystal display module, the multilayer film structure sequentially comprising:
a first refractive layer having a medium refractive index and disposed adjacent to the glass cover plate;
a second refraction layer having a low refractive index and disposed adjacent to the first refraction layer;
an ink layer disposed adjacent to the second refraction layer to define a non-visible region;
a third refractive layer having the intermediate refractive index, the third refractive layer being disposed adjacent to the ink layer and adjacent to the second refractive layer in the non-visible region to define a visible region, wherein the non-visible region surrounds the visible region; and
and the optical adhesive layer is arranged between the third refraction layer and the liquid crystal display module.
10. The display panel of claim 9, wherein the first and third refractive layers are made of SiN having a refractive index of about 1.8xThe second refractive layer is formed of SiO having a refractive index of about 1.52Thereby forming the composite material.
11. The display panel of claim 9, further comprising a touch sensing layer disposed adjacent to the optical adhesive layer and another optical adhesive layer disposed between the touch sensing layer and the liquid crystal display module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW108211934 | 2019-09-06 | ||
| TW108211934U TWM593567U (en) | 2019-09-06 | 2019-09-06 | Display panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212160641U true CN212160641U (en) | 2020-12-15 |
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ID=71133368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021183883.1U Active CN212160641U (en) | 2019-09-06 | 2020-06-23 | Display panel |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN212160641U (en) |
| TW (1) | TWM593567U (en) |
-
2019
- 2019-09-06 TW TW108211934U patent/TWM593567U/en unknown
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2020
- 2020-06-23 CN CN202021183883.1U patent/CN212160641U/en active Active
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| TWM593567U (en) | 2020-04-11 |
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